Peer Reviewed Papers (updated 1/19/18)
Robertson, J.B., Ley, M.T., “Determining the water to cement ratio of fresh concrete by evaporation”, Construction and Building Materials, V242, 2020, https://doi.org/10.1016/j.conbuildmat.2019.117972.
Kim, T., Ley, M.T., Kang, S., Davis, J.M., Kim, S., Amrollahi, P., “Using particle composition of fly ash to predict concrete strength and electrical resistivity”, Cement and Concrete Composites, V107, 2020, https://doi.org/10.1016/j.cemconcomp.2019.103493.
Hall, H., Ley, M.T., Welchel, D., Peery, J., Leflore, J., Khatibmasjedi, M., Gudimettla, J.M., Praul, M., “Field and laboratory validation of the sequential air method”, Materials and Structures, V53, I1, 2020, https://doi.org/10.1617/s11527-020-1444-8.
Khanzadeh Moradllo, M., Qiao, C., Ghantous, R.M., Zaw, M., Hall, H., Ley, M.T., Weiss, J.W., “Quantifying the freeze-thaw performance of air-entrained concrete using the time to reach critical saturation modelling approach”, Cement and Concrete Composites, v106, 2020, https://doi.org/10.1016/j.cemconcomp.2019.103479.
Sokhansefat, G., Moradian, M., Finnell, M., Behravan, M., Ley, M.T., Lucero, C., Weiss, W.J., “Using X-ray Computed Tomography to investigate mortar subjected to freeze-thaw cycles”, Cement and Concrete Composites, 2019, https://doi.org/10.1016/j.cemconcomp.2020.103520.
Burris, L.E., Alapati, P., Kurtis, K.E., Hajibabaee, A., Ley, M.T., “Understanding Shrinkage in Alternative Binder Systems”, ACI Special Publication, V 336, 2019, pp. 73-90.
Khanzadeh Moradllo, M., Qiao, C., Keys, M., Hall, H., Ley, M.T., Reese, S., Weiss, W.J., “Quantifying Fluid Absorption in Air-Entrained Concrete Using Neutron Radiography, ACI Materials Journal, v116, I6, 2019, pp. 213-226.
Khanzadeh Moradllo, M., Qiao, C., Hall, H., Ley, M.T., Reese, S.R., Weiss, W.J., “Quantifying fluid filling of the air voids in air entrained concrete using neutron radiography”, Cement and Concrete Composites, V104, 2019, p. 103407, https://doi.org/10.1016/j.cemconcomp.2019.103407.
Moradian, M., Hu, Q., Aboustait, M., Ley, M.T., Hanan, J.C., Xiao, X., Rose, V., Winarski, R., Scherer, G.W., “Multi-scale observations of structure and chemical composition changes of portland cement systems during hydration”, Construction and Building Materials, V.212, 2019, pp.486-499.
Kim, T., Hu, Q., Ley, M.T., Aboustait, M., Bullard, J.W., “Using Particle Characterization to Study Fly Ash Dissolution and Leaching in Water and KOH Solution.” ACI Materials Journal, Vol. 116 Issue 4, 2019, p5-17.
Sokhansefat, G., Ley, M.T., Cook, M.D., Alturki, R., Moradian, M., Investigation of concrete workability through characterization of aggregate gradation in hardened concrete using X-ray computed tomography, Cement and Concrete Composites, 2019, https://doi.org/10.1016/j.cemconcomp.2019.02.008
Honeycutt, W.T, Ley, M.T., Materer N.F., “Precision and Limits of Detection for Selected Commercially Available, Low-Cost Carbon Dioxide and Methane Gas Sensors”, Sensors 2019, 19(14), 3157; https://doi.org/10.3390/s19143157.
Moradian, M., Ley, M.T., Hu, Q, Robertson, B., “Direct in-situ observation of early age void evolution in sustainable cement paste containing fly ash or limestone”, Journal of Composites Part B, V175, 2019, pp. 107099, https://doi.org/10.1016/j.compositesb.2019.107099.
Qiao, C., Khanzedeh Maradllo, M., Hall, H., Ley, M.T., Weiss, W.J., Electrical Resistivity and Formation Factor of Air-Entrained Concrete, ACI Materials Journal, V. 116, 3, pp. 85-94, 2019, doi: 10.14359/51714506.
Zolghardr, A., Kelley, M.D., Sokhansefat, G., Moradian, M., Sullins, B., Ley, M.T., Biernacki, J.J., Biomass microspheres – A new method for characterization of biomass pyrolysis and shrinkage, Bioresource Technology, V 273, pp. 16-24, https://doi.org/10.1016/j.biortech.2018.09.137, 2019.
T. Kim, M. Moradian, and M. Ley, "Dissolution and Leaching of Fly Ash in Nitric Acid Using Automated Scanning Electron Microscopy," Advances in Civil Engineering Materials 7, no. 1 (2018): 291-307. https://doi.org/10.1520/ACEM20180016
Hajibabaee, A., Khanzedeh Maradllo, M.K., Ley, M.T., Comparison of curing compounds to reduce volume change from differential drying in concrete pavement, International Journal of Pavement Engineering, 19 (9), 815-824 DOI:10.1080/10298436.2016.1210442, 2018
Moradian, M., Ley, M.T., Grasley, Z., Stress Induced Dissolution and Time-Dependent Deformation of Portland Cement Paste, Materials and Design, 2018.
Bullard, J.W., Hagedorn, J.H., Ley, M.T., Hu, Q., Griffin, W., Terrill, J.E., Jeffrey W., A critical comparison of 3D experiments and simulations of tricalcium silicate hydration, Journal of the American Ceramic Society 101 (4), 1453-1470, 2018.
Kim, T., Davis, J.M., Ley, M.T., Kang, S., Amrollahi, P., Fly Ash Particle Characterization for predicting concrete compressive strength, Construction and Building Materials, V 165, pp. 560-571, 2018, 10.1016/j.conbuildmat.2018.01.059.
Hajibabaee, A., Moadllo, M.K., Behravan, A., Ley, M.T., Quantitative measurement of curing methods for concrete bridge decks, Construction and Building Materials, V162, pp. 306 – 313, 2018.
Weiss, W.J., Spragg, R.P., Ley, M.T., Isgor, O.B., VanDam T., Toward Performance Specifications for Concrete: Linking Resistivity, RCPT and Diffusion Predictions Using the Formation Factor for Use in Specifications, “High Tech Concrete: Where Technology and Engineering Meet”, Springer/FIB, pp. 2057-2065, 2018
Masoud Moradian, Qinang Hu, Mohammed Aboustait, M. Tyler Ley, Jay C. Hanan, Xianghui Xiao, George W. Scherer, Zhidong Zhang, Direct observation of void evolution during cement hydration, Materials & Design, 136C (2017) pp. 137-149.
Biernacki JJ, Bullard JW, Sant G, Brown, K, Glasser, F.P., Ley, M.T., Livingston, R., Nicoleau, L., Olek, J., Sanchez, F., Shahsavari, R., Stutzman, P.E., Sobolev, K., Prater, T., Cements in the 21st century: Challenges, perspectives, and opportunities. J Am Ceram Soc. 2017;100:2746-2773. https://doi.org/10.1111/jace.14948
Cook, M.D., Ghaeezadah, A., Ley, M.T., Impacts of Coarse-Aggregate Gradation on the Workability of Slip-Formed Concrete – ASCE Journal of Materials in Civil Engineering, V30, I2, 2017.
Ley, M.T., Welchel, D., Peery, J., Khatibmasjedi, S., LeFlore, J., “Determining the air-void distribution in fresh concrete with the Sequential Air Method”, Construction and Building Materials, 150 (2017) 723- 737, http://dx.doi.org/10.1016/j.conbuildmat.2017.06.037 0950-0618/
Khanzadeh-Moradllo, M., Ley, M.T., “Quantitative measurement of the influence of degree of saturation on ion penetration in cement paste by using X-ray imaging”, Construction and Building Materials, 141 (2017) 113-129, http://dx.doi.org/10.1016/j.conbuildmat.2017.03.0070950-0618/.
Khanzadeh-Moradllo, M., Ley, M.T., “Comparing In-Situ Ion Diffusion in Alternative Cementitious Materials by Using Non-Destructive X-ray Imaging”, Cement and Concrete Composites, (2017) https://doi.org/10.1016/j.cemconcomp.2017.05.014
Colston, N., Thomas, J., Ley, M. T., Ivey, T. and Utley, J. (2017), Collaborating for Early-Age Career Awareness: A Comparison of Three Instructional Formats. J. Eng. Educ., 106: 326–344. doi:10.1002/jee.20166
Khanzadeh-Moradllo, M., Ley, M.T., “Using X-ray imaging to investigate in-situ ion diffusion in cementitious materials”, Construction and Building Materials, 136 (2017), 88-98, http://dx.doi.org/10.1016/j.conbuildmat.2017.01.038.
Sudbrink, B., Khanzadeh-Moradllo, M., Hu, Q., Ley, M.T., Davis, J.M., Materer, N., Apblett, A., Imaging the presence of silane coatings in concrete with micro X-ray fluorescence, Cement and Concrete Research, V92, February 2017, pp. 121-127 https://doi.org/10.1016/j.cemconres.2016.11.019
Khanzadeh-Moradllo, M., Sudbrink, B., Hu, Q., Aboustait, M., Tabb, B., Ley, M.T., Davis, J.M., “Using Micro X-Ray Fluorescence to Image Chloride Profiles in Concrete”, Cement and Concrete Research, Volume 92, February 2017, Pages 128-141, https://doi.org/10.1016/j.cemconres.2016.11.014
Todak H.N., Tsui M., Ley M.T., Jason Weiss W. (2017) Evaluating Freeze-Thaw Damage in Concrete with Acoustic Emissions and Ultrasonics. In: Shen G., Wu Z., Zhang J. (eds) Advances in Acoustic Emission Technology. Springer Proceedings in Physics, vol 179. Springer, Cham, https://doi.org/10.1007/978-3-319-29052-2_16
Weiss, W.J., Ley, M.T., Isgor, O.B., VanDam T., Toward performance specifications for concrete durability: using the formation factor for corrosion and critical saturation for freeze-thaw, Transportation Research Board, Issue 17-02543, 2017.
Mohammad Tahersima, Tyler Ley, Paul Tikalsky, "Hydration Heat in a Mass Concrete and a Thin Slab with Limestone Blended Cement," International Journal of Materials Science and Engineering, Vol. 5, No. 2, pp. 79-86, June 2017. doi: 10.17706/ijmse.2017.5.2.79-86
Hu, Q., Aboustait, M., Kim, T., Ley, M.T., Bullard, J., Scherer, G., Hanan, J.C., Rose, V., Winarski, R., Gelb, J., “Direct Measurements of Structure, Chemistry and Mass Density During the Induction Period of C3S Hydration”, Cement and Concrete Research, 2016, doi:10.1016/j.cemconres.2016.07.008.
Hu, Q., Aboustait, M., Kim, T., Ley, M.T., Hanan, J.C., Bullard, J., Winarski, R., Rose, V., “Direct three-dimensional observation of the microstructure and chemistry of C3S hydration”, Cement and Concrete Research, 2016, doi:10.1016/j.cemconres.2016.07.006.
Cannon, C., Tepper, J., Apblett, A., and Ley, M. T., "Investigation of the Effectiveness of Surfactants with Different Partition Coefficients to Entrain Air in Cement Paste," Advances in Civil Engineering Materials, Vol. 5, No. 2, 2016, pp. 38-50, https://doi.org/10.1520/ACEM20150025. ISSN 2165-3984
Cook, D., Ley, M.T., Ghaeezadeh, A., “Effects of Aggregate Concepts on the Workability of Slip Formed Concrete”, American Society of Civil Engineering, V28, I10, October, 2016, https://doi.org/10.1061/(ASCE)MT.1943-5533.0001608.
Glasser, D., Crandall, D., Benge, G. Ley, M.T., Kutchko, B., “Relationship between Operational Variables, Fundamental Physics and Foamed Cement Properties in Laboratory and Field Generated Foamed Cement Slurries”, Journal of Petroleum Science and Engineering, vol 145, Sept. 2016, pp. 66-76.
Cavaline, T., Ley, M.T., Sutter, L., Weiss, J.W., VanDam, T., “A Road Map for Research and Implementation of Freeze-Thaw Resistant Highway Concrete”, The 11th International Conference on Concrete Pavements, published proceedings, August, 2016.
Khanzadeh Moradllo, M., Sudbrink, B., Ley, M.T., “Determining the Effective Service Life of Silane Treatments in Concrete Bridge Decks”, Construction Building Materials, May 2016, doi:10.1016/j.conbuildmat.2016.04.132.
S. Nasrazadani , R. Eghtesad, S. Vupputuri, M.T. Ley, and J.D. Ramsey, “Application of Fourier Transform Infrared Spectroscopy to Study Concrete Degradation Induced by Biogenic Sulfuric Acid”, Materials and Structures, May, 2015 doi: 10.1617/s11527-015-0631-5
Hajibabaee, A., Ley, M.T., “The Impact of Wet Curing on Curling in Concrete”, Materials and Structures, March 2015 doi: 10.1617/s11527-015-0600-z.
Aboustait, M., Kim, T., Ley, M.T., Davis, J., “Physical and chemical characteristics of fly ash using automated scanning electron microscopy”, Construction Building Materials, V106, March 2016, 1-10 pp. doi:10.1016/j.conbuildmat.2015.12.098
Hajibabaee, A, Grasley, Z., Ley, M.T., Mechanisms of Dimensional Instability Caused by Drying in Wet Cured Paste, Cement and Concrete Research, 79, Jan 2016, doi:10.1016/j.cemconres.2015.09.007.
Burris, L. E., Alapati, P., Moser, R.D., Ley M.T., Berke, N., Kurtis, K.E., “Alternative Cementitious Materials – Challenges and Opportunities” ACI Special Publication 305-27, (2015), 7 ppgs.
Aichele, C.P,, Venkataramani, D., Smay, J.E., McCann, M.H., Richter, S., Khanzadeh-Moradllo, M., Aboustait, M., Ley, M.T., “A Comparison of Automated Scanning Electron Microscopy (ASEM) and Acoustic Attenuation Spectroscopy (AAS) Instruments for Particle Sizing”, Colloids and Surfaces, V479, August 2015, doi:10.1016/j.colsurfa.2015.03.052.
Sravanthi Vupputuri, Babu Z. Fathepure, Gregory G. Wilber, Elias Sudoi, Seifollah Nasrazadani, M. Tyler Ley, Joshua D. Ramsey, Isolation of a sulfur-oxidizing Streptomyces sp. from deteriorating bridge structures and its role in concrete deterioration, International Biodeterioration & Biodegradation, Volume 97, 2015, Pages 128-134, ISSN 0964-8305, https://doi.org/10.1016/j.ibiod.2014.11.002.(http://www.sciencedirect.com/science/article/pii/S0964830514003278)
M.T. Ley, Qinang Hu, Mohammed Aboustait, Masoud Moradian, Taehwan Kim, J.C Hanan, Robert Winarski, Volker Rose, Jeff Gelb, “Combining nCT and nXRF to Create Time Resolved Three Dimensional Constitutive Maps”, volume of invited talks, International Congress on Tomography of Materials and Structures, Quebec City, Quebec, Canada, 7/1/15.
Hajibabaee, A., Ley, M.T., “The Impact of Wet and Sealed Curing on Curling in Cement Paste from Drying Shrinkage”, ACI Materials Journal, V. 112, 1, January, 2015.
Hu, Q., Ley, M.T., Russell, B., “Determining Efficient Strut and Tie Models for Simply Supported Beams Using Minimum Strain Energy”, ACI Structural Journal, V.111,5 Sept. 2014.
Felice, R., Freeman, J.M., Ley, M.T., “Durable Concrete with Modern Air Entraining Agents”, ACI Concrete International, V36,8, August 2014.
Cook, D., Ghaeezadeh, A., Ley, M.T., “A Workability Test for Slip Formed Concrete Pavements”, Construction and Building Materials, 10.1016/j.conbuildmat.2014.06.087.
Colston, N., Thomas, J., Ivey, T., Utley, J., & Ley, T., “Engineer-led videos: A broader impacts model.” Proceedings of the American Society for Engineering Education, Midwest Section, 2014.
Hu, Q., Aboustait, M., Ley, M.T., Hanan, J.C., Rose, V., Winarski, R., “Combined Three-Dimensional Structure and Chemistry Imaging with Nanoscale Resolution”, Acta Materialia, 77, 2014, pp. 173-182 doi:10.1016/j.actamat.2014.05.050.
Ley, M.T., Tabb B., “A Test Method to Measure the Freeze Thaw Durability of Fresh Concrete Using Overpressure”, TDI Congress, Orlando June 2014.
Mayercsik, N., Kurtis, K., Felice, R., Ley, M.T., “A probabilistic technique for entrained air void analysis in hardened concrete”, Cement and Concrete Research, v. 58, May 2014, doi:10.1016/j.cemconres.2014.01.023.
Hu, Q., Ley, M.T., Davis, J., Hanan, J.C., Frazier, R., Zhang, Y., “3D Chemical Segmentation of Complex Particles with X-ray Computed Tomography and Electron Probe Microanalysis”, Fuel, Vol. 116, Jan. 2014, pp. 229-236.
Qinang Hu, Mohammad Aboustait, M. Tyler Ley, Jay Hanan, Jeff Davis, Robert Winarski, and Volker Rose, "3D Chemical Segmentation of Complex Particles by Combining X-ray Tomography and Chemical Mapping with Laboratory and Synchrotron Techniques", volume of invited talks, 7/1/13, International Congress on Tomography of Materials and Structures, Veerle Cnude and Dominique Bernard, University of Ghent, Ghent, Belgium.
M.T. Ley, Q. Hu, M. Aboustait, J. Hanan, J. Davis, R. Winarski, and V. Rose, Multi Scale Characterization of the Chemical Phases within Fly Ash with Synchrotron and -Laboratory Techniques, Planetary Lecture, 6/10/13, 14th Annual Euroseminar on Microscopy Applied to Building Materials, Ulla Jackobsen, and Karen Scrivner, Copenhagen, Denmark, June 10-14, 2013, Helsingor, Denmark.
Pour-Ghaz, M., Barrett, T., Ley, M. T., Materer, N., Apblett, A., Weiss, J., “Wireless Crack Detection in Concrete Elements using Conductive Surface Sensors and Radio Frequency Identification Technology”, Journal Materials of Civil Engineering, ASCE, 1943-5533.0000891, July 2013.
Materer, N., Field, P., Ley, N., Razzagh, R., Scott, D., Ley, M. T., Apblett, A., “Passive Wireless Detection of Corrosive Salts in Concrete using Wire-Based Triggers”, Journal Materials of Civil Engineering, ASCE, 1943-5533.0000881, June 2013.
Robertson, B., Ley, M.T.; “The Use of Numerical Extrapolation to Accelerate Delayed Ettringite Formation Tests”, ASTM Journal of Testing and Evaluation, V2,1, 2013. DOI: 10.1520/ACEM20130067
Patil, S., Ley, M.T., Browne, R.,; “Adjustable Haunch Forms for Precast Bridge Deck Systems,” Journal of the Precast Concrete Institute, Fall 2012.
Materer, N., Field, P., Ley, N., Razzaghi, A., Scott, D., Ley, M.T., Apblett, A.; “Wire Based Detection of Corrosive Salts in Concrete,” 18th Intelligent Transportation System World Congress, June 2011.
Ley, M.T., Bowne, R., Abrams, J., Gonzalez, R., Bussell, L., Pardon, M., Valles, F., “The Development and Implementation of a Precast Bridge Deck Overhang System”, 3rd FIB/PCI International Proceedings, June 2010.
Ley, M.T., “Determining the Air-Entraining Admixture Dosage Response for Concrete with a Single Concrete Mixture”, ASTM Journal of Testing and Evaluation, V. 7 Issue 2, February 2010.
Ley, M.T., Folliard, K.J., Hover, K.C., “Observations of air-bubbles escaped from fresh cement paste”, Cement Concrete Research (2009), doi:10.1016/j.cemconres.2009.01.019.
Ley, M.T, Chancey, R., Juenger, M., Folliard, K.J., The physical and chemical characteristics of the shell of air-entrained bubbles in cement paste, Cement Concrete Research (2009), doi:10.1016/j.cemconres.2009.01.018.
Ley, T., Harris, N. J., Folliard, K. J., Hover, K. C.; “Investigation of Required Air Entraining Admixture Dosage in Fly Ash Concrete,” ACI Concrete Materials Journal, Vol. 105, 5,September 2008, pp. 494-498.
Harris, N.J., Hover, K.C., Folliard, K.J., Ley, T.; “The use of the foam index test to predict AEA dosage in concrete containing fly ash: Part I-Evaluation of the State of Practice,” ASTM Journal of Testing and Evaluation, (2008), doi: 10.1520/JAI101601.
Harris, N.J., Hover, K.C., Folliard, K.J., Ley, T.; “The use of the foam index test to predict AEA dosage in concrete containing fly ash: Part II-Development of a standard test method: apparatus and procedure,” ASTM Journal of Testing and Evaluation, (2008), doi: 10.1520/JAI101602.
Harris, N.J., Hover, K.C., Folliard, K.J., Ley, T.; “The use of the foam index test to predict AEA dosage in concrete containing fly ash: Part III-Development of a standard test method—Proportions of materials,” ASTM Journal of Testing and Evaluation, (2008), doi: 10.1520/JAI101603.
Ley, T., Riding, K., Widianto, W., Bae, S., Breen, J.; “Experimental verification of the strut-and-tie model design method,” ACI Structural Journal, Vol. 106, 6, December 2007, pp. 749-755.
Harris, N.J., Hover, K.C., Folliard, K.J., Ley, T.; “Variables Affecting the ASTM C311 Loss on Ignition Test for Fly Ash,” ASTM Journal of Testing and Evaluation, (2006), doi: 10.1520/JAI100286.
Freeby, G. and Ley, T., “Texas’ Totally Prefabricated Bridge Superstructures”, Transportation Research Board Annual Meeting. Washington, D.C., January, 2005.
Reports and Test Methods
1.AASHTO TP137 – The Box Test in Slip Form Paving of Fresh Portland Cement Concrete. 2019
2.Improving Specifications to Resist Frost Damage in Modern Concrete Mixtures - Pool Fund Study TPF-5-297
3.Using Medical X-Ray Machine to Determine the Service Life of Concrete - NCHRP-IDEA Program Project Final Report.
4.Yang, Xiaoming & Ley, M & Moudabel, Omar & Hajibabaee, Amir & Lee, Ning. Development and Implementation of an MEPDG for Rigid Pavements – Phase 3., 2018.
5.AASHTO TP118 – Standard Method of Test for Characterization of the Air-Void System of Freshly Mixed Concrete by the Sequential Pressure Method, 2018
6.Primary author of PP84 – Standard Practice for Developing Performance Engineered Concrete Pavement Mixtures, 2017
7.http://www.intrans.iastate.edu/research/documents/research-reports/2016_joint_deterioration_in_pvmts_guide.pdf, 2016
8.Cook, M.D., Seader, J.N., Ley, M.T., Russell, B.W., “Investigation of Optimized Graded Concrete for Oklahoma – Phase 2”, Oklahoma Department of Transportation, 2015.
9.Khanzadeh-Moradllo, M., Sudbrink, B., Ley, M.T., “Expected Life of Silane Water Repellant Treatments on Bridge Decks – Phase 2”, 2015.
10.Khatibmasjedi, M., Hu, Q., Ley, M.T., “Insights In to the Mechanisms of Salt Scaling of High Volume Fly ash in Concrete”, Missouri University Transportation Center, 2014.
11.Cook, D., Ghaeezadah, A., Ley, M.T., “Investigation of Optimized Graded Concrete for Oklahoma Phase I”, FHWA-OK-13-12. Oklahoma Department of Transportation 2014.
12.Ley, M.T., Hajibabbee, A., Khatibmasjedi, M., Development and Implementation of a Mechanistic and Empirical Pavement Design Guide (MEPDG) for Rigid Pavements Phase II. January 2015.
13.Cook, M., Ghazeezadah, A., Ley, M.T.; Investigation of Optimized Graded Concrete for Oklahoma. Oklahoma Transportation Center, July 2013.
14.Aboustait, M., Hu, Q., Frazier, R., Zhang, Y., Tabb, B., Ley, M.T., Hanan, J.; Innovative Performance of Fly Ash Performance in Concrete. Oklahoma Transportation Center, February 2013.
15.Ley, M.T., Tabb, B.; Development of a Robust Field Technique to Quantify the Air-Void Distribution in Fresh Concrete. Oklahoma Transportation Center, July 2013.
16.Ley, M.T., Sudbrink, B.; Investigation of Chloride Profiles in Concrete Cores with m-XRF. Virginia DOT, January 2013.
17.Ley, M.T., Hajibabbee, A., Kadam, S., Frazier, R., Aboustait, M., Ebisch, T., Riding, K.; Development and Implementation of a Mechanistic and Empirical Pavement Design Guide (MEPDG) for Rigid Pavements Phase I. January 2013.
18.Ley, M.T., Woestman, S.; Effect of Y-Cracking on CRCP Performance. December 2012.
19.Ley, M.T., Sudbrink, S., Kotha, H.; Expected Life of Silane Water Repellant Treatments on Bridge Decks. December 2012.
20.Ley, M.T., Cook, D., Fick, G.; Concrete Pavement Mixture Design and Analysis (MDA): Effect of Aggregate Systems on Concrete Mixture Properties. July 2012. http://www.intrans.iastate.edu/research/documents/research-reports/mda_aggregates_w_cvr.pdf
21.Ley, M.T., Felice, R., Freeman, J.M.; Assessment of Air Void System Requirements for Durable Concrete. June 2012. http://publications.iowa.gov/14951/1/IA_DOT_TPF-5%28205%29_InTrans_mda_air_void.pdf
22.Materer, N., Ley, M.T., Apblett, A.; Passive Wireless Corrosion Sensors for Transportation Infrastructure. December 2011, OCTREOS7.1-34.
23.Ley, M.T., Rotithor, H.; Performance of Ultra-Thin Whitetopping (UTW) in Oklahoma. July 2011, ODOT SP&R 2222.
24.Ley, M.T., Ghashgesh, M., Patil, S.; Investigations of a Precast Bridge Deck System. July 2010, OTCREOS7.1-31.
25.Mish, Koehler, Emerson, Goode, Ley, Tyagi,; Development of a Strategy to Recognize, Rehabilitate, and Replace Deficient Bridge Infrastructure. July 2009, FHWA #DTFHG1-06-H-00044.
26.Burgher, B., Thibonnier, A., Folliard, K.J., Ley, M.T., Thomas, M.D.A.; Investigation of the Internal Stresses Caused by Delayed Ettringite Formation in Concrete. November 2008, TxDOT project # 5218.
27.Ley, M.T., Robertson, B.,; Investigation of the Impact of Novel Chemical Admixtures on the Frost Durability of Concrete. October 2008, W.R. Grace report.
28.Folliard, K. J., Harris, N.J., Hover, K.C., Ley, M.T., Navarro, A,; Effects of Texas Fly Ash on Air-Entrainment in Concrete. August 2008, TxDOT project # 5207.
29.Trejo, D., Hite, M., Mander, J., Mander, T., Henley, M., Scott, R., Ley, M.T., Patil, S. Development of a Precast Bridge Deck Overhang System for the Rock Creek Bridge. June 2008, TxDOT project # 6100.
30.Folliard, K. J., Barborak, R., Drimalas, T., Garber, S., Ideker, J., Ley, T., Williams, S., Juengar, M., Thomas, M.D.A.; Preventing ASR/DEF in New Concrete. January 2006, TxDOT project # 4085.
Kim, T., Ley, M.T., Kang, S., Davis, J.M., Kim, S., Amrollahi, P., “Using particle composition of fly ash to predict concrete strength and electrical resistivity”, Cement and Concrete Composites, V107, 2020, https://doi.org/10.1016/j.cemconcomp.2019.103493.
Hall, H., Ley, M.T., Welchel, D., Peery, J., Leflore, J., Khatibmasjedi, M., Gudimettla, J.M., Praul, M., “Field and laboratory validation of the sequential air method”, Materials and Structures, V53, I1, 2020, https://doi.org/10.1617/s11527-020-1444-8.
Khanzadeh Moradllo, M., Qiao, C., Ghantous, R.M., Zaw, M., Hall, H., Ley, M.T., Weiss, J.W., “Quantifying the freeze-thaw performance of air-entrained concrete using the time to reach critical saturation modelling approach”, Cement and Concrete Composites, v106, 2020, https://doi.org/10.1016/j.cemconcomp.2019.103479.
Sokhansefat, G., Moradian, M., Finnell, M., Behravan, M., Ley, M.T., Lucero, C., Weiss, W.J., “Using X-ray Computed Tomography to investigate mortar subjected to freeze-thaw cycles”, Cement and Concrete Composites, 2019, https://doi.org/10.1016/j.cemconcomp.2020.103520.
Burris, L.E., Alapati, P., Kurtis, K.E., Hajibabaee, A., Ley, M.T., “Understanding Shrinkage in Alternative Binder Systems”, ACI Special Publication, V 336, 2019, pp. 73-90.
Khanzadeh Moradllo, M., Qiao, C., Keys, M., Hall, H., Ley, M.T., Reese, S., Weiss, W.J., “Quantifying Fluid Absorption in Air-Entrained Concrete Using Neutron Radiography, ACI Materials Journal, v116, I6, 2019, pp. 213-226.
Khanzadeh Moradllo, M., Qiao, C., Hall, H., Ley, M.T., Reese, S.R., Weiss, W.J., “Quantifying fluid filling of the air voids in air entrained concrete using neutron radiography”, Cement and Concrete Composites, V104, 2019, p. 103407, https://doi.org/10.1016/j.cemconcomp.2019.103407.
Moradian, M., Hu, Q., Aboustait, M., Ley, M.T., Hanan, J.C., Xiao, X., Rose, V., Winarski, R., Scherer, G.W., “Multi-scale observations of structure and chemical composition changes of portland cement systems during hydration”, Construction and Building Materials, V.212, 2019, pp.486-499.
Kim, T., Hu, Q., Ley, M.T., Aboustait, M., Bullard, J.W., “Using Particle Characterization to Study Fly Ash Dissolution and Leaching in Water and KOH Solution.” ACI Materials Journal, Vol. 116 Issue 4, 2019, p5-17.
Sokhansefat, G., Ley, M.T., Cook, M.D., Alturki, R., Moradian, M., Investigation of concrete workability through characterization of aggregate gradation in hardened concrete using X-ray computed tomography, Cement and Concrete Composites, 2019, https://doi.org/10.1016/j.cemconcomp.2019.02.008
Honeycutt, W.T, Ley, M.T., Materer N.F., “Precision and Limits of Detection for Selected Commercially Available, Low-Cost Carbon Dioxide and Methane Gas Sensors”, Sensors 2019, 19(14), 3157; https://doi.org/10.3390/s19143157.
Moradian, M., Ley, M.T., Hu, Q, Robertson, B., “Direct in-situ observation of early age void evolution in sustainable cement paste containing fly ash or limestone”, Journal of Composites Part B, V175, 2019, pp. 107099, https://doi.org/10.1016/j.compositesb.2019.107099.
Qiao, C., Khanzedeh Maradllo, M., Hall, H., Ley, M.T., Weiss, W.J., Electrical Resistivity and Formation Factor of Air-Entrained Concrete, ACI Materials Journal, V. 116, 3, pp. 85-94, 2019, doi: 10.14359/51714506.
Zolghardr, A., Kelley, M.D., Sokhansefat, G., Moradian, M., Sullins, B., Ley, M.T., Biernacki, J.J., Biomass microspheres – A new method for characterization of biomass pyrolysis and shrinkage, Bioresource Technology, V 273, pp. 16-24, https://doi.org/10.1016/j.biortech.2018.09.137, 2019.
T. Kim, M. Moradian, and M. Ley, "Dissolution and Leaching of Fly Ash in Nitric Acid Using Automated Scanning Electron Microscopy," Advances in Civil Engineering Materials 7, no. 1 (2018): 291-307. https://doi.org/10.1520/ACEM20180016
Hajibabaee, A., Khanzedeh Maradllo, M.K., Ley, M.T., Comparison of curing compounds to reduce volume change from differential drying in concrete pavement, International Journal of Pavement Engineering, 19 (9), 815-824 DOI:10.1080/10298436.2016.1210442, 2018
Moradian, M., Ley, M.T., Grasley, Z., Stress Induced Dissolution and Time-Dependent Deformation of Portland Cement Paste, Materials and Design, 2018.
Bullard, J.W., Hagedorn, J.H., Ley, M.T., Hu, Q., Griffin, W., Terrill, J.E., Jeffrey W., A critical comparison of 3D experiments and simulations of tricalcium silicate hydration, Journal of the American Ceramic Society 101 (4), 1453-1470, 2018.
Kim, T., Davis, J.M., Ley, M.T., Kang, S., Amrollahi, P., Fly Ash Particle Characterization for predicting concrete compressive strength, Construction and Building Materials, V 165, pp. 560-571, 2018, 10.1016/j.conbuildmat.2018.01.059.
Hajibabaee, A., Moadllo, M.K., Behravan, A., Ley, M.T., Quantitative measurement of curing methods for concrete bridge decks, Construction and Building Materials, V162, pp. 306 – 313, 2018.
Weiss, W.J., Spragg, R.P., Ley, M.T., Isgor, O.B., VanDam T., Toward Performance Specifications for Concrete: Linking Resistivity, RCPT and Diffusion Predictions Using the Formation Factor for Use in Specifications, “High Tech Concrete: Where Technology and Engineering Meet”, Springer/FIB, pp. 2057-2065, 2018
Masoud Moradian, Qinang Hu, Mohammed Aboustait, M. Tyler Ley, Jay C. Hanan, Xianghui Xiao, George W. Scherer, Zhidong Zhang, Direct observation of void evolution during cement hydration, Materials & Design, 136C (2017) pp. 137-149.
Biernacki JJ, Bullard JW, Sant G, Brown, K, Glasser, F.P., Ley, M.T., Livingston, R., Nicoleau, L., Olek, J., Sanchez, F., Shahsavari, R., Stutzman, P.E., Sobolev, K., Prater, T., Cements in the 21st century: Challenges, perspectives, and opportunities. J Am Ceram Soc. 2017;100:2746-2773. https://doi.org/10.1111/jace.14948
Cook, M.D., Ghaeezadah, A., Ley, M.T., Impacts of Coarse-Aggregate Gradation on the Workability of Slip-Formed Concrete – ASCE Journal of Materials in Civil Engineering, V30, I2, 2017.
Ley, M.T., Welchel, D., Peery, J., Khatibmasjedi, S., LeFlore, J., “Determining the air-void distribution in fresh concrete with the Sequential Air Method”, Construction and Building Materials, 150 (2017) 723- 737, http://dx.doi.org/10.1016/j.conbuildmat.2017.06.037 0950-0618/
Khanzadeh-Moradllo, M., Ley, M.T., “Quantitative measurement of the influence of degree of saturation on ion penetration in cement paste by using X-ray imaging”, Construction and Building Materials, 141 (2017) 113-129, http://dx.doi.org/10.1016/j.conbuildmat.2017.03.0070950-0618/.
Khanzadeh-Moradllo, M., Ley, M.T., “Comparing In-Situ Ion Diffusion in Alternative Cementitious Materials by Using Non-Destructive X-ray Imaging”, Cement and Concrete Composites, (2017) https://doi.org/10.1016/j.cemconcomp.2017.05.014
Colston, N., Thomas, J., Ley, M. T., Ivey, T. and Utley, J. (2017), Collaborating for Early-Age Career Awareness: A Comparison of Three Instructional Formats. J. Eng. Educ., 106: 326–344. doi:10.1002/jee.20166
Khanzadeh-Moradllo, M., Ley, M.T., “Using X-ray imaging to investigate in-situ ion diffusion in cementitious materials”, Construction and Building Materials, 136 (2017), 88-98, http://dx.doi.org/10.1016/j.conbuildmat.2017.01.038.
Sudbrink, B., Khanzadeh-Moradllo, M., Hu, Q., Ley, M.T., Davis, J.M., Materer, N., Apblett, A., Imaging the presence of silane coatings in concrete with micro X-ray fluorescence, Cement and Concrete Research, V92, February 2017, pp. 121-127 https://doi.org/10.1016/j.cemconres.2016.11.019
Khanzadeh-Moradllo, M., Sudbrink, B., Hu, Q., Aboustait, M., Tabb, B., Ley, M.T., Davis, J.M., “Using Micro X-Ray Fluorescence to Image Chloride Profiles in Concrete”, Cement and Concrete Research, Volume 92, February 2017, Pages 128-141, https://doi.org/10.1016/j.cemconres.2016.11.014
Todak H.N., Tsui M., Ley M.T., Jason Weiss W. (2017) Evaluating Freeze-Thaw Damage in Concrete with Acoustic Emissions and Ultrasonics. In: Shen G., Wu Z., Zhang J. (eds) Advances in Acoustic Emission Technology. Springer Proceedings in Physics, vol 179. Springer, Cham, https://doi.org/10.1007/978-3-319-29052-2_16
Weiss, W.J., Ley, M.T., Isgor, O.B., VanDam T., Toward performance specifications for concrete durability: using the formation factor for corrosion and critical saturation for freeze-thaw, Transportation Research Board, Issue 17-02543, 2017.
Mohammad Tahersima, Tyler Ley, Paul Tikalsky, "Hydration Heat in a Mass Concrete and a Thin Slab with Limestone Blended Cement," International Journal of Materials Science and Engineering, Vol. 5, No. 2, pp. 79-86, June 2017. doi: 10.17706/ijmse.2017.5.2.79-86
Hu, Q., Aboustait, M., Kim, T., Ley, M.T., Bullard, J., Scherer, G., Hanan, J.C., Rose, V., Winarski, R., Gelb, J., “Direct Measurements of Structure, Chemistry and Mass Density During the Induction Period of C3S Hydration”, Cement and Concrete Research, 2016, doi:10.1016/j.cemconres.2016.07.008.
Hu, Q., Aboustait, M., Kim, T., Ley, M.T., Hanan, J.C., Bullard, J., Winarski, R., Rose, V., “Direct three-dimensional observation of the microstructure and chemistry of C3S hydration”, Cement and Concrete Research, 2016, doi:10.1016/j.cemconres.2016.07.006.
Cannon, C., Tepper, J., Apblett, A., and Ley, M. T., "Investigation of the Effectiveness of Surfactants with Different Partition Coefficients to Entrain Air in Cement Paste," Advances in Civil Engineering Materials, Vol. 5, No. 2, 2016, pp. 38-50, https://doi.org/10.1520/ACEM20150025. ISSN 2165-3984
Cook, D., Ley, M.T., Ghaeezadeh, A., “Effects of Aggregate Concepts on the Workability of Slip Formed Concrete”, American Society of Civil Engineering, V28, I10, October, 2016, https://doi.org/10.1061/(ASCE)MT.1943-5533.0001608.
Glasser, D., Crandall, D., Benge, G. Ley, M.T., Kutchko, B., “Relationship between Operational Variables, Fundamental Physics and Foamed Cement Properties in Laboratory and Field Generated Foamed Cement Slurries”, Journal of Petroleum Science and Engineering, vol 145, Sept. 2016, pp. 66-76.
Cavaline, T., Ley, M.T., Sutter, L., Weiss, J.W., VanDam, T., “A Road Map for Research and Implementation of Freeze-Thaw Resistant Highway Concrete”, The 11th International Conference on Concrete Pavements, published proceedings, August, 2016.
Khanzadeh Moradllo, M., Sudbrink, B., Ley, M.T., “Determining the Effective Service Life of Silane Treatments in Concrete Bridge Decks”, Construction Building Materials, May 2016, doi:10.1016/j.conbuildmat.2016.04.132.
S. Nasrazadani , R. Eghtesad, S. Vupputuri, M.T. Ley, and J.D. Ramsey, “Application of Fourier Transform Infrared Spectroscopy to Study Concrete Degradation Induced by Biogenic Sulfuric Acid”, Materials and Structures, May, 2015 doi: 10.1617/s11527-015-0631-5
Hajibabaee, A., Ley, M.T., “The Impact of Wet Curing on Curling in Concrete”, Materials and Structures, March 2015 doi: 10.1617/s11527-015-0600-z.
Aboustait, M., Kim, T., Ley, M.T., Davis, J., “Physical and chemical characteristics of fly ash using automated scanning electron microscopy”, Construction Building Materials, V106, March 2016, 1-10 pp. doi:10.1016/j.conbuildmat.2015.12.098
Hajibabaee, A, Grasley, Z., Ley, M.T., Mechanisms of Dimensional Instability Caused by Drying in Wet Cured Paste, Cement and Concrete Research, 79, Jan 2016, doi:10.1016/j.cemconres.2015.09.007.
Burris, L. E., Alapati, P., Moser, R.D., Ley M.T., Berke, N., Kurtis, K.E., “Alternative Cementitious Materials – Challenges and Opportunities” ACI Special Publication 305-27, (2015), 7 ppgs.
Aichele, C.P,, Venkataramani, D., Smay, J.E., McCann, M.H., Richter, S., Khanzadeh-Moradllo, M., Aboustait, M., Ley, M.T., “A Comparison of Automated Scanning Electron Microscopy (ASEM) and Acoustic Attenuation Spectroscopy (AAS) Instruments for Particle Sizing”, Colloids and Surfaces, V479, August 2015, doi:10.1016/j.colsurfa.2015.03.052.
Sravanthi Vupputuri, Babu Z. Fathepure, Gregory G. Wilber, Elias Sudoi, Seifollah Nasrazadani, M. Tyler Ley, Joshua D. Ramsey, Isolation of a sulfur-oxidizing Streptomyces sp. from deteriorating bridge structures and its role in concrete deterioration, International Biodeterioration & Biodegradation, Volume 97, 2015, Pages 128-134, ISSN 0964-8305, https://doi.org/10.1016/j.ibiod.2014.11.002.(http://www.sciencedirect.com/science/article/pii/S0964830514003278)
M.T. Ley, Qinang Hu, Mohammed Aboustait, Masoud Moradian, Taehwan Kim, J.C Hanan, Robert Winarski, Volker Rose, Jeff Gelb, “Combining nCT and nXRF to Create Time Resolved Three Dimensional Constitutive Maps”, volume of invited talks, International Congress on Tomography of Materials and Structures, Quebec City, Quebec, Canada, 7/1/15.
Hajibabaee, A., Ley, M.T., “The Impact of Wet and Sealed Curing on Curling in Cement Paste from Drying Shrinkage”, ACI Materials Journal, V. 112, 1, January, 2015.
Hu, Q., Ley, M.T., Russell, B., “Determining Efficient Strut and Tie Models for Simply Supported Beams Using Minimum Strain Energy”, ACI Structural Journal, V.111,5 Sept. 2014.
Felice, R., Freeman, J.M., Ley, M.T., “Durable Concrete with Modern Air Entraining Agents”, ACI Concrete International, V36,8, August 2014.
Cook, D., Ghaeezadeh, A., Ley, M.T., “A Workability Test for Slip Formed Concrete Pavements”, Construction and Building Materials, 10.1016/j.conbuildmat.2014.06.087.
Colston, N., Thomas, J., Ivey, T., Utley, J., & Ley, T., “Engineer-led videos: A broader impacts model.” Proceedings of the American Society for Engineering Education, Midwest Section, 2014.
Hu, Q., Aboustait, M., Ley, M.T., Hanan, J.C., Rose, V., Winarski, R., “Combined Three-Dimensional Structure and Chemistry Imaging with Nanoscale Resolution”, Acta Materialia, 77, 2014, pp. 173-182 doi:10.1016/j.actamat.2014.05.050.
Ley, M.T., Tabb B., “A Test Method to Measure the Freeze Thaw Durability of Fresh Concrete Using Overpressure”, TDI Congress, Orlando June 2014.
Mayercsik, N., Kurtis, K., Felice, R., Ley, M.T., “A probabilistic technique for entrained air void analysis in hardened concrete”, Cement and Concrete Research, v. 58, May 2014, doi:10.1016/j.cemconres.2014.01.023.
Hu, Q., Ley, M.T., Davis, J., Hanan, J.C., Frazier, R., Zhang, Y., “3D Chemical Segmentation of Complex Particles with X-ray Computed Tomography and Electron Probe Microanalysis”, Fuel, Vol. 116, Jan. 2014, pp. 229-236.
Qinang Hu, Mohammad Aboustait, M. Tyler Ley, Jay Hanan, Jeff Davis, Robert Winarski, and Volker Rose, "3D Chemical Segmentation of Complex Particles by Combining X-ray Tomography and Chemical Mapping with Laboratory and Synchrotron Techniques", volume of invited talks, 7/1/13, International Congress on Tomography of Materials and Structures, Veerle Cnude and Dominique Bernard, University of Ghent, Ghent, Belgium.
M.T. Ley, Q. Hu, M. Aboustait, J. Hanan, J. Davis, R. Winarski, and V. Rose, Multi Scale Characterization of the Chemical Phases within Fly Ash with Synchrotron and -Laboratory Techniques, Planetary Lecture, 6/10/13, 14th Annual Euroseminar on Microscopy Applied to Building Materials, Ulla Jackobsen, and Karen Scrivner, Copenhagen, Denmark, June 10-14, 2013, Helsingor, Denmark.
Pour-Ghaz, M., Barrett, T., Ley, M. T., Materer, N., Apblett, A., Weiss, J., “Wireless Crack Detection in Concrete Elements using Conductive Surface Sensors and Radio Frequency Identification Technology”, Journal Materials of Civil Engineering, ASCE, 1943-5533.0000891, July 2013.
Materer, N., Field, P., Ley, N., Razzagh, R., Scott, D., Ley, M. T., Apblett, A., “Passive Wireless Detection of Corrosive Salts in Concrete using Wire-Based Triggers”, Journal Materials of Civil Engineering, ASCE, 1943-5533.0000881, June 2013.
Robertson, B., Ley, M.T.; “The Use of Numerical Extrapolation to Accelerate Delayed Ettringite Formation Tests”, ASTM Journal of Testing and Evaluation, V2,1, 2013. DOI: 10.1520/ACEM20130067
Patil, S., Ley, M.T., Browne, R.,; “Adjustable Haunch Forms for Precast Bridge Deck Systems,” Journal of the Precast Concrete Institute, Fall 2012.
Materer, N., Field, P., Ley, N., Razzaghi, A., Scott, D., Ley, M.T., Apblett, A.; “Wire Based Detection of Corrosive Salts in Concrete,” 18th Intelligent Transportation System World Congress, June 2011.
Ley, M.T., Bowne, R., Abrams, J., Gonzalez, R., Bussell, L., Pardon, M., Valles, F., “The Development and Implementation of a Precast Bridge Deck Overhang System”, 3rd FIB/PCI International Proceedings, June 2010.
Ley, M.T., “Determining the Air-Entraining Admixture Dosage Response for Concrete with a Single Concrete Mixture”, ASTM Journal of Testing and Evaluation, V. 7 Issue 2, February 2010.
Ley, M.T., Folliard, K.J., Hover, K.C., “Observations of air-bubbles escaped from fresh cement paste”, Cement Concrete Research (2009), doi:10.1016/j.cemconres.2009.01.019.
Ley, M.T, Chancey, R., Juenger, M., Folliard, K.J., The physical and chemical characteristics of the shell of air-entrained bubbles in cement paste, Cement Concrete Research (2009), doi:10.1016/j.cemconres.2009.01.018.
Ley, T., Harris, N. J., Folliard, K. J., Hover, K. C.; “Investigation of Required Air Entraining Admixture Dosage in Fly Ash Concrete,” ACI Concrete Materials Journal, Vol. 105, 5,September 2008, pp. 494-498.
Harris, N.J., Hover, K.C., Folliard, K.J., Ley, T.; “The use of the foam index test to predict AEA dosage in concrete containing fly ash: Part I-Evaluation of the State of Practice,” ASTM Journal of Testing and Evaluation, (2008), doi: 10.1520/JAI101601.
Harris, N.J., Hover, K.C., Folliard, K.J., Ley, T.; “The use of the foam index test to predict AEA dosage in concrete containing fly ash: Part II-Development of a standard test method: apparatus and procedure,” ASTM Journal of Testing and Evaluation, (2008), doi: 10.1520/JAI101602.
Harris, N.J., Hover, K.C., Folliard, K.J., Ley, T.; “The use of the foam index test to predict AEA dosage in concrete containing fly ash: Part III-Development of a standard test method—Proportions of materials,” ASTM Journal of Testing and Evaluation, (2008), doi: 10.1520/JAI101603.
Ley, T., Riding, K., Widianto, W., Bae, S., Breen, J.; “Experimental verification of the strut-and-tie model design method,” ACI Structural Journal, Vol. 106, 6, December 2007, pp. 749-755.
Harris, N.J., Hover, K.C., Folliard, K.J., Ley, T.; “Variables Affecting the ASTM C311 Loss on Ignition Test for Fly Ash,” ASTM Journal of Testing and Evaluation, (2006), doi: 10.1520/JAI100286.
Freeby, G. and Ley, T., “Texas’ Totally Prefabricated Bridge Superstructures”, Transportation Research Board Annual Meeting. Washington, D.C., January, 2005.
Reports and Test Methods
1.AASHTO TP137 – The Box Test in Slip Form Paving of Fresh Portland Cement Concrete. 2019
2.Improving Specifications to Resist Frost Damage in Modern Concrete Mixtures - Pool Fund Study TPF-5-297
3.Using Medical X-Ray Machine to Determine the Service Life of Concrete - NCHRP-IDEA Program Project Final Report.
4.Yang, Xiaoming & Ley, M & Moudabel, Omar & Hajibabaee, Amir & Lee, Ning. Development and Implementation of an MEPDG for Rigid Pavements – Phase 3., 2018.
5.AASHTO TP118 – Standard Method of Test for Characterization of the Air-Void System of Freshly Mixed Concrete by the Sequential Pressure Method, 2018
6.Primary author of PP84 – Standard Practice for Developing Performance Engineered Concrete Pavement Mixtures, 2017
7.http://www.intrans.iastate.edu/research/documents/research-reports/2016_joint_deterioration_in_pvmts_guide.pdf, 2016
8.Cook, M.D., Seader, J.N., Ley, M.T., Russell, B.W., “Investigation of Optimized Graded Concrete for Oklahoma – Phase 2”, Oklahoma Department of Transportation, 2015.
9.Khanzadeh-Moradllo, M., Sudbrink, B., Ley, M.T., “Expected Life of Silane Water Repellant Treatments on Bridge Decks – Phase 2”, 2015.
10.Khatibmasjedi, M., Hu, Q., Ley, M.T., “Insights In to the Mechanisms of Salt Scaling of High Volume Fly ash in Concrete”, Missouri University Transportation Center, 2014.
11.Cook, D., Ghaeezadah, A., Ley, M.T., “Investigation of Optimized Graded Concrete for Oklahoma Phase I”, FHWA-OK-13-12. Oklahoma Department of Transportation 2014.
12.Ley, M.T., Hajibabbee, A., Khatibmasjedi, M., Development and Implementation of a Mechanistic and Empirical Pavement Design Guide (MEPDG) for Rigid Pavements Phase II. January 2015.
13.Cook, M., Ghazeezadah, A., Ley, M.T.; Investigation of Optimized Graded Concrete for Oklahoma. Oklahoma Transportation Center, July 2013.
14.Aboustait, M., Hu, Q., Frazier, R., Zhang, Y., Tabb, B., Ley, M.T., Hanan, J.; Innovative Performance of Fly Ash Performance in Concrete. Oklahoma Transportation Center, February 2013.
15.Ley, M.T., Tabb, B.; Development of a Robust Field Technique to Quantify the Air-Void Distribution in Fresh Concrete. Oklahoma Transportation Center, July 2013.
16.Ley, M.T., Sudbrink, B.; Investigation of Chloride Profiles in Concrete Cores with m-XRF. Virginia DOT, January 2013.
17.Ley, M.T., Hajibabbee, A., Kadam, S., Frazier, R., Aboustait, M., Ebisch, T., Riding, K.; Development and Implementation of a Mechanistic and Empirical Pavement Design Guide (MEPDG) for Rigid Pavements Phase I. January 2013.
18.Ley, M.T., Woestman, S.; Effect of Y-Cracking on CRCP Performance. December 2012.
19.Ley, M.T., Sudbrink, S., Kotha, H.; Expected Life of Silane Water Repellant Treatments on Bridge Decks. December 2012.
20.Ley, M.T., Cook, D., Fick, G.; Concrete Pavement Mixture Design and Analysis (MDA): Effect of Aggregate Systems on Concrete Mixture Properties. July 2012. http://www.intrans.iastate.edu/research/documents/research-reports/mda_aggregates_w_cvr.pdf
21.Ley, M.T., Felice, R., Freeman, J.M.; Assessment of Air Void System Requirements for Durable Concrete. June 2012. http://publications.iowa.gov/14951/1/IA_DOT_TPF-5%28205%29_InTrans_mda_air_void.pdf
22.Materer, N., Ley, M.T., Apblett, A.; Passive Wireless Corrosion Sensors for Transportation Infrastructure. December 2011, OCTREOS7.1-34.
23.Ley, M.T., Rotithor, H.; Performance of Ultra-Thin Whitetopping (UTW) in Oklahoma. July 2011, ODOT SP&R 2222.
24.Ley, M.T., Ghashgesh, M., Patil, S.; Investigations of a Precast Bridge Deck System. July 2010, OTCREOS7.1-31.
25.Mish, Koehler, Emerson, Goode, Ley, Tyagi,; Development of a Strategy to Recognize, Rehabilitate, and Replace Deficient Bridge Infrastructure. July 2009, FHWA #DTFHG1-06-H-00044.
26.Burgher, B., Thibonnier, A., Folliard, K.J., Ley, M.T., Thomas, M.D.A.; Investigation of the Internal Stresses Caused by Delayed Ettringite Formation in Concrete. November 2008, TxDOT project # 5218.
27.Ley, M.T., Robertson, B.,; Investigation of the Impact of Novel Chemical Admixtures on the Frost Durability of Concrete. October 2008, W.R. Grace report.
28.Folliard, K. J., Harris, N.J., Hover, K.C., Ley, M.T., Navarro, A,; Effects of Texas Fly Ash on Air-Entrainment in Concrete. August 2008, TxDOT project # 5207.
29.Trejo, D., Hite, M., Mander, J., Mander, T., Henley, M., Scott, R., Ley, M.T., Patil, S. Development of a Precast Bridge Deck Overhang System for the Rock Creek Bridge. June 2008, TxDOT project # 6100.
30.Folliard, K. J., Barborak, R., Drimalas, T., Garber, S., Ideker, J., Ley, T., Williams, S., Juengar, M., Thomas, M.D.A.; Preventing ASR/DEF in New Concrete. January 2006, TxDOT project # 4085.
