Alireza Bayat, PhD, PEng

Area of Study / Keywords

Trenchless Technologies Underground Construction Geotechnical Engineering Road and Pavement Engineering Construction Engineering Geotechnical and Geoenvironmental Engineering Transportation Engineering

About

Dr. Bayat is the NSERC Associate Industrial Research Chair in Underground Trenchless Construction.

Education

  Ph.D. 2009, Pavement/Geotechnical Engineering, University of Waterloo, Waterloo, ON

  M.Sc. 2004, Geotechnical Engineering, Sharif University of Technology, Tehran, Iran

  B.Sc. 2002, Civil Engineering, Sharif University of Technology, Tehran, Iran

Research

Research Interests

Dr. Bayat’s research interests include underground and road infrastructure. Worldwide urban population growth—with the UN projecting that 68% of people will live in urban areas by 2050 —is leading to increased challenges in building and maintaining infrastructure. Dr. Bayat’s multidisciplinary research focuses on meeting these challenges through sustainable, environmentally responsible methods, including the use of waste or recycled materials, and construction methods with less environmental impact, such as trenchless technologies.

As NSERC Associate Industrial Research Chair in Underground Trenchless Construction (NSERC IRC), Dr. Bayat leads research projects on methods to install and rehabilitate underground infrastructure, focusing on cold climates. To date, NSERC IRC research has focused on risks and mitigation measures in HDD, microtunneling, improvements in trenchless geotechnics, and implementation of FTTx (fibre-to-the-x, where x is home or business), among other topics.

Research Initiatives

Consortium for Engineered Trenchless Technologies

The Consortium for Engineered Trenchless Technologies (CETT) was founded by Dr. Bayat (along with municipal and industry partners) in 2011 to provide practical solutions for underground construction challenges. Trenchless technologies are a relatively new group of construction methods that minimize open excavation, along with the disruption associated with open-cut construction at ground level (e.g. traffic rerouting). The minimal excavation requirements make trenchless methods well suited for construction in dense urban centres or in environmentally sensitive areas (for instance, horizontal directional drilling [HDD] for river crossings). CETT researchers work closely with industry partners to investigate various problems

In addition to a $5M industry fund for research activities, CETT has focused on developing training opportunities. Dr. Bayat has partnered with industry experts to deliver 19 professional development courses since 2013, reaching more than 800 industry leaders and professionals to date. The courses ensure that CETT research reaches beyond academia to the professionals who are responsible for delivering safe, reliable infrastructure.

Integrated Road Research Facility

Dr. Bayat is also Director of the Integrated Road Research Facility (IRRF), which he founded with municipal and provincial partners (including AB Recycling), as well as federal funding from the Canadian Foundation for Innovation. The mandate of the IRRF is to answer questions about the impact of cold climates on pavement performance and evaluate the use of waste and/or recycled materials in road construction. Some sections of the test road are used to evaluate bottom ash as a pavement insulation layer, and others to test tire-derived aggregate (TDA) as a lightweight embankment material. More than 8,000 tonnes of shredded tires (~2/3 of the annual waste tires in Alberta, with a market value of $1.6M) were used during construction. The IRRF test road is instrumented with over 400 sensors, with a long-term data monitoring program in place. The IRRF also includes an advanced pavement materials testing laboratory at the University of Alberta.

Current Appointments

• Ralph Haas/ Stantec Fellow in Civil Engineering, Department of Civil & Environmental Engineering, University of Alberta (2012–present)
• Associate Editor, ASCE Journal of Pipeline Systems Engineering and Practice (2016–present)
• Member of Editorial Advisory Board, Trenchless Technology Canada (2016–present)
• Board Member, North American Society of Trenchless Technology (NASTT) NW Chapter (2014–present)
• Main Member, TRB Standing Committee on Seasonal Climatic Effects on Transportation Infrastructure [AFP50] (2016–present)
• Committee Member, TRB Full-Scale Accelerated Pavement Testing Committee [AFD40] (2013–present)
• University of Alberta Representative for Transportation Research Board (2010–present)
• Board Member, Secretary and University of Alberta Representative, Centre for Pavement and Transportation Engineering Planning (2010–present)

Journal Publications

Hashemian, L., Saroj, N., Mehran, B., and Bayat, A. (2020) “Salt Gradation Analysis for Winter Road Maintenance in Canada,” Civil Engineering Journal, Volume 6, No. 9, pp. 1670-1683. http://dx.doi.org/10.28991/cej-2020-03091573

Rostami, A., Kang, C., Yi, Y., and Bayat, A. (2020) “Numerical Modeling of the Annular Failure Pressure during HDD in Noncohesive Soils,” Journal of Pipeline Systems Engineering and Practice, Volume 11, Issue 2, 04020004. DOI: 10.1061/(ASCE)PS.1949-1204.0000445

Kang, C., Wu, Y., Yi, Y., and Bayat, A. (2019) “Assessment of the clogging potential of two clays," Applied Clay Science, Volume 178, 105134. https://doi.org/10.1016/j.clay.2019.105134 (Technical Note)

Navab-Kashani, R., Gay, L., and Bayat, A. (2019) “Experimental and Numerical Study on Production Rate in Sewer Mainline Video Inspection,” Journal of Pipeline Systems Engineering and Practice, Volume 10, Issue 2, 04019011. DOI: 10.1061/(ASCE)PS.1949-1204.0000373

Tavafzadeh, N., Hashemian, L. and Bayat, A. (2019) “Seasonal Response and Damage Evaluation of Pavements Comprised of Insulation Layers,” International Journal of Pavement Research and Technology, Volume 12, pp. 170-177. https://doi.org/10.1007/s42947-019-0022-3

Yi, Y., Kang, C., and Bayat, A. (2019) “Predicting One-Dimensional Compression of Tire Derived Aggregate Using a Simple Method,” Soils and Foundations, Volume 59, Issue 5, pp. 1292-1301. https://doi.org/10.1016/j.sandf.2019.05.010.

Haghi, N., Monfared, M., Hashemian, L., and Bayat, A. (2019) “Capital Cost Comparison of Pavements Comprised of Insulation Layers: Case Study in Edmonton, Canada,” Journal of Construction Engineering and Management, Volume 145, Issue 7, 04019038. https://doi.org/10.1061/(ASCE)CO.1943-7862.0001660.

Haghi, N., Hashemian, L. and Bayat, A. (2018) “The Effect of Insulation Layers on Pavement Strength during Non-Freeze-Thaw Season,” International Journal of Pavement Engineering. Volume 19, Issue 6, pp. 543-552. DOI: 10.1080/10298436.2016.1178741

Deng, S., Kang, C., Bayat, A., Kuru, E., Osbak, M., Barr, K., and Trovato, C. (2020) “Rheological properties of clay based drilling fluids and evaluation of their hole cleaning performances in horizontal directional drilling,” Journal of Pipeline Systems Engineering and Practice, Volume 11, Issue 3, 04020031. DOI: 10.1061/(ASCE)PS.1949-1204.0000475.

Asefzadeh, A., Hashemian, L., and Bayat, A. (2018) “Fatigue life evaluation of pavement embankments made with tire derived aggregates,” Canadian Journal of Civil Engineering, Volume 45, pp. 795-802. http://dx.doi.org/10.1139/cjce-2017-0671.

Rabiei, M., Yi, Y., Bayat, A., and Cheng, R. (2018) "Simple methods for fluidic drag estimation during pipe installation via HDD," Tunneling and Underground Space Technology, Volume 76, pp. 172-176, https://doi.org/10.1016/j.tust.2018.03.007.

Khondoker, M., Yi, Y., and Bayat, A. (2018) “Subsurface profiling using horizontal drilling indices for guided boring method,” International Journal of Geotechnical Engineering, Volume 12, Issue 2, pp. 155-165. https://doi.org/10.1080/19386362.2016.1257415.

Biswas, S., Hashemian, L., and Bayat, A. (2018) “Investigation on Pothole Severity and Maintenance Methods in Canada throughout Questionnaire Survey,” Journal of Cold Regions Engineering, Volume 32, Issue 2, 04018002. DOI: 10.1061/(ASCE)CR.1943-5495.0000161.

Asefzadeh, A., Hashemian, L., and Bayat, A. (2018) “The Effect of Bottom Ash on Soil Suction and Resilient Modulus of Medium-Plasticity Clay,” Transportation Research Record: Journal of the Transportation Research Board, Volume 2672, Issue 52, pp. 96-107. DOI: 10.1177/0361198118797484.

Kang, C., Yi, Y., and Bayat, A. (2020) “Performance evaluation of TBM clogging potential for plain and conditioning soil using a newly developed laboratory apparatus,” International Journal of Geotechnical Engineering, Volume 14, No. 5, pp. 463-472. https://doi.org/10.1080/19386362.2018.1439671.

Hashemian, L., Velasco, V., and Bayat, A. (2018) “Laboratory Investigation of Pavement Backfilling Materials for Micro-Trenching in Cold Regions,” Transportation Research Record: Journal of the Transportation Research Board, Volume 2672, Issue 12, pp. 62-71. DOI: 10.1177/0361198118784172.

Shafiee, M., Hashemian, L., Rostami, A., Bayat, A., and Tabatabaee, N. (2018) “Field Measurement and Modeling of Vertical and Longitudinal Strains from Falling Weight Deflectometer Testing,” Journal of Transportation Engineering, Part B: Pavements, Volume 144, Issue 1, 04017021. https://doi.org/10.1061/JPEODX.0000022

Das, S., Bayat, A., Gay, L., and Matthews, J. (2018) “Productivity Analysis of Lateral CIPP Rehabilitation Process Using Simphony Simulation Modelling,” Journal of Pipeline Systems Engineering and Practice, Volume 9, Issue 1, 04017032, DOI: 10.1061/(ASCE)PS.1949-1204.0000297.

Hashemian, L. and Bayat, A. (2018) “Field Evaluation of Load-Bearing Capacity of Tire Fill Embankment Pavements,” Journal of Testing and Evaluation, Volume 46, Number 5, pp. 1901-1910. https://doi.org/10.1520/JTE20160667.

Alberto-Hernandez, Y., Kang, C., Yi, Y., and Bayat, A. (2018) “Clogging Potential of Tunnel Boring Machine (TBM): A Review,” International Journal of Geotechnical Engineering, 12(3), pp. 316-323, DOI: 10.1080/19386362.2016.1277621.

Alberto-Hernandez, Y., Kang, C., Yi, Y., and Bayat, A. (2018) “Mechanical Properties of Clayey Soil Relevant for Clogging Potential,” International Journal of Geotechnical Engineering, 12(6), pp. 529-536, DOI: 10.1080/19386362.2017.1311086.

Kang, C., Mohit, S., Ahmadian, M., and Bayat, A. (2017) “Emission Comparison of Underground Trenchless Construction Methods for Canada’s Oil and Gas Industry,” Journal of Environmental Solutions for Oil, Gas, and Mining, Volume 3, No. 1, pp. 19-32. https://doi.org/10.3992/2377-3545-3.1.19.

Mohit, S., Monfared, M., Kang, C., and Bayat, A. (2017) “Comparative Study of Greenhouse Gas Emissions from Hand Tunneling and Pilot Tube Method Underground Construction Methods,” Journal of Green Building, Volume 12, Number 4, pp. 54-69. https://doi.org/10.3992/1943-4618.12.4.54.

Vaseli, H., Hashemian, L., Bayat, A., Gay, L., Williams, I., and Mezler, J. (2017) “Evaluation of Fiber Optic Installation Methods, A Case Study on Micro-Trenching in Alberta, Canada,” FACETS. Volume 2, pp. 642-659. DOI:10.1139/facets-2016-0043.

Asefzadeh, A., Hashemian, L., and Bayat. A. (2017) “Development of Statistical Temperature Prediction Models for a Test Road in Edmonton, Alberta, Canada,” International Journal of Pavement Research and Technology. 10(5): 369-382. http://dx.doi.org/10.1016/j.ijprt.2017.05.004.

Rabiei, M., Yi, Y., Bayat, A., Cheng, R., and Osbak, M. (2017) "Estimation of Hydrokinetic Pressure and Fluidic Drag Changes during Pipe Installations via HDD Based on Identifying Slurry Flow Pattern Change within a Borehole," Journal of Pipeline Systems Engineering and Practice, Volume 8, Issue 4, 04017020, pp. 1-8, DOI: 10.1061/(ASCE)PS.1949-1204.0000285.

Rezaei, M., Hashemian, L., Bayat, A. and Huculak, B. (2017) “Investigation of Rutting Resistance and Moisture Damage of Cold Asphalt Mixes,” Journal of Materials in Civil Engineering. 29(10): 04017193, DOI: 10.1061/(ASCE)MT.1943-5533.0002042.

Hashemian, L., Rezaei, M., and Bayat, A. (2017) “Field and Laboratory Investigations on Pavement Backfilling Material for Micro-Trenching in Cold Regions,” International Journal of Pavement Research and Technology. Volume 10, pp. 333-342, DOI: 10.1016/j.ijprt.2017.03.010.

Asefzadeh, A., Hashemian, L., and Bayat, A. (2017) “Characterization of Permanent Deformation Behavior of Silty Sand Subgrade Soil under Repeated Load Triaxial Tests,” Transportation Research Record: Journal of the Transportation Research Board. 2641(1): 103-110, http://dx.doi.org/10.3141/2641-13.

Shafiee, M., Biswas, S., Tavafzadeh, N., Hashemian, L., and Bayat, A. (2017) “Investigation of Thermal-Induced Strains in Flexible Pavements Based on Field Data,” Canadian Journal of Civil Engineering, Volume 44, Issue 4, pp. 244-252, DOI: 10.1139/cjce-2016-0458.

Yi, Y., Khondoker, M., Bayat, A., and Ranjbar, M. (2017) “Jacking Force Analysis of Pipe Installation using a Modified Guided Boring Method,” ASCE Journal of Pipeline Systems Engineering and Practice, Volume 8, Issue 4, 04017014. DOI: 10.1061/(ASCE)PS.1949-1204.0000279.

Rostami, A., Yi, Y., and Bayat, A. (2017) “Estimation of Maximum Annular Pressure during HDD in Non-Cohesive Soils,” International Journal of Geomechanics, Volume 17, Issue 4, 06016029, DOI: 10.1061/(ASCE)GM.1943-5622.0000801. (Technical Note)

Ngan, K. H., Yi, Y., Rostami, A., and Bayat, A. (2017) “Estimation of Soil Expansion Force in Static Pipe Bursting: Comparison Between Numerical and Analytical Solutions,” International Journal of Geomechanics, Volume 17, Issue 3, 04016065, DOI: 10.1061/(ASCE)GM.1943-5622.0000763.

Meles, D., Yi, Y. and Bayat, A. (2016) “Performance Evaluation of Highway Embankment Constructed from Tire Derived Aggregate Using Falling Weight Deflectometer Tests,” Transportation Infrastructure Geotechnology, Volume 3, pp. 128-142, DOI: 10.1007/s40515-016-0035-1.

Das, S., Bayat, A., Gay, L., Salimi, M., and Matthews, J. (2016) “A comprehensive review on the challenges of cured-in-place pipe (CIPP) installations,” Journal of Water Supply: Research and Technology – AQUA, Volume 65, Issue 8, pp. 583-596, DOI: 10.2166/aqua.2016.119.

Rabiei, M., Yi, Y., Bayat, A. Cheng, R. and Osbak, M. (2016) “Fluidic-drag estimation in horizontal directional drilling using the finite-volume method,” Journal of Pipeline Engineering, Volume 15, Issue 3, pp. 187-200. DOI: 10.1061/(ASCE)PS.1949-1204.0000200.

Biswas, S., Hashemian, L., and Bayat, A. (2016) “Investigation on Seasonal Variation of Thermal-Induced Strain in Flexible Pavements Based on Field and Laboratory Measurements,” International Journal of Pavement Research and Technology, Volume 9, Issue 5, pp. 354-362, https://doi.org/10.1016/j.ijprt.2016.08.008.

Rostami, A., Yi, Y., Bayat, A. and Osbak, M. (2016) “Annular Fluid Pressure Estimation during Pilot Boring in Horizontal Directional Drilling using the Bingham Plastic Flow Model,” International Journal of Petroleum Engineering, Volume 2, Issue 2, pp. 79-90, DOI: 10.1504/IJPE.2016.078814

Faghih, A., Yi, Y., Bayat, A., and Osbak, M. (2017) “Efficient drilling in horizontal directional drilling by implementing the concept of specific energy,” Geomechanics and Geoengineering, Volume 12, Issue 3, pp. 201-206, DOI: 10.1080/17486025.2016.1184762.

Asefzadeh, A., Hashemian, L., Tavafzadeh, N., and Bayat, A. (2016) “Evaluation of spring load restrictions and winter weight premium duration prediction methods in cold regions according to field data,” Canadian Journal of Civil Engineering, Volume 43, Issue 7, pp. 667-674, http://dx.doi.org/10.1139/cjce-2015-0554.

Hasanuzzaman, M., Hashemian, L., and Bayat, A. (2018) “Laboratory Investigations of Cold Mix Asphalt for Cold Region Applications,” Journal of Testing and Evaluation, Vol. 46, No. 1, pp. 88–98, https://doi.org/10.1520/ JTE20160263.

Tavafzadeh, N., Hashemian, L., and Bayat, A. (2018) “The effect of insulation layers on pavement strength during non-freeze-thaw season,” The International Journal of Pavement Engineering, Volume 19, Issue 6, pp. 543-552, DOI: 10.1080/10298436.2016.1178741

Biswas, S., Hashemian, L., Hasanuzzaman, M., and Bayat, A. (2016) “A study on pothole repair in Canada through questionnaire survey and laboratory evaluation of patching materials,” Canadian Journal of Civil Engineering, Volume 43, Issue 5, pp. 443-450, http://dx.doi.org/10.1139/cjce-2015-0553.

Yi, Y., Gay, L., Bayat, A., and Ranjbar, M. (2016) “Case Study of Pipeline Installation using a Modified Guided Boring Method,” Journal of Pipeline Systems Engineering and Practice, Volume 7, Issue 4, 05016002, DOI: 10.1061/(ASCE)PS .1949-1204.0000243.

Khondoker, M., Yi, Y., and Bayat, A. (2016) “Comparison of different methods for normal stress calculation during pipe jacking/microtunnelling,” International Journal of Geotechnical Engineering, Volume 10, Issue 4, pp. 366-376. DOI: 10.1080/19386362.2016.1147193

Shafiee, M., Hashemian, L., Asefzadeh, A., and Bayat, A. (2016) “Time-Frequency Domain Analysis of Asphalt Longitudinal Strain,” Transportation Research Record: Journal of the Transportation Research Board, No. 2590, pp. 56-64. DOI: 10.3141/2590-07.

Tavafzadeh, N., Hashemian, L., and Bayat, A. (2016) “Effects of Seasonal Variation on the Load-Bearing Capacity of Pavements Composed of Insulation Layers,” Transportation Research Record: Journal of the Transportation Research Board, No. 2579, pp. 87-95. DOI: 10.3141/2579-10.

Rostami, A., Yi, Y., Bayat, A., and Osbak, M. (2016) “Predicting the plan annular pressure using the power law flow model in horizontal directional drilling,” Canadian Journal of Civil Engineering, Volume 43, Issue 3, pp. 252-259. http://dx.doi.org/10.1139/cjce-2015-0030.

Salimi, S., Nassiri, S., Bayat, A., and Halliday, D. (2016) “Lateral Coefficient of Friction for Characterizing Winter Road Conditions,” Canadian Journal of Civil Engineering, Volume 43, Issue 1, pp. 73-83, http://dx.doi.org/10.1139/cjce-2015-0222.

Rabiei, M., Yi, Y., Bayat, A., and Cheng, R. (2016) “General Method for Pullback Force Prediction for Polyethylene Pipes in Horizontal Directional Drilling,” Journal of Pipeline Systems Engineering and Practice, Volume 7, Issue 3, 04016004. DOI: 10.1061/(ASCE)PS.1949-1204.0000230

Ngan, K.H., Rostami, A., Yi, Y., and Bayat, A. (2016) “Predicting Soil Expansion Force during Static Pipe Bursting using Cavity Expansion Solutions,” International Journal of Geomechanics, Volume 16, Issue 3, 04015075. DOI: 10.1061/(ASCE)GM.1943-5622.0000590

Meles, D., Chan, D., Yi, Y., and Bayat, A. (2016) “Finite-Element Analysis of Highway Embankment Made from Tire-Derived Aggregate,” Journal of Materials in Civil Engineering, Volume 28, Issue 2, 04015100. DOI: 10.1061/(ASCE)MT.1943-5533.0001371

Shafiee, M., Hashemian, L., and Bayat, A. (2015) “Seasonal Analysis of Flexible Pavement Response to Falling Weight Deflectometer,” International Journal of Pavement Research and Technology, Volume 8, Issue 5, pp. 346-352. DOI: 10.6135/ijprt.org.tw/2015.8(5).346

Shafiee, M., Asefzadeh, A., Hashemian, L., and Bayat, A. (2015) “Analysis of Loading Frequency in Flexible Pavement Using Fast Fourier Transform,” International Journal of Pavement Research and Technology, Volume 8, Issue 6, pp. 403-409. DOI: 10.6135/ijprt.org.tw/2015.8(6).403

Shafiee, M., Hashemian, L., and Bayat, A. (2015) “Seasonal Analysis of Flexible Pavement Response to Falling Weight Deflectometer,” International Journal of Pavement Research and Technology, Volume 8, Issue 5, pp. 346-352. http://dx.doi.org/10.6135/ijprt.org.tw/2015.8(5).346

Yi, Y., Meles, D., Nassiri, S., and Bayat, A. (2015) “On the Compressibility of Tire-Derived Aggregate: Comparison of Results from Laboratory and Field Tests,” Canadian Geotechnical Journal, Volume 52, Issue 4, pp. 442-458. https://doi.org/10.1139/cgj-2014-0110

Faghih, A., Yi, Y., Bayat, A., and Osbak, M. (2015) “Fluidic Drag Estimation in Horizontal Directional Drilling Based on Flow Equations,” Journal of Pipeline Systems Engineering and Practices, Volume 6, Issue 4, 04015006. DOI: 10.1061/(ASCE)PS.1949-1204.0000200

Navab-Kashani, R., Gay, L., and Bayat, A. (2015) “Productivity Improvement of Sewer CCTV Inspection through Time Study and Route Optimization,” Journal of Construction Engineering and Management, Volume 141, Issue 6, 04015009. DOI: 10.1061/(ASCE)CO.1943-7862.0000976

Nassiri, S., Salimi, S., and Bayat, A. (2015) “Survey of Practice and Literature Review on Municipal Road Winter Maintenance in Canada,” Journal of Cold Regions Engineering, Volume 29, Issue 3, 04014015. DOI: 10.1061/(ASCE)CR.1943-5495.0000082

Nassiri, S., Shafiee, M.H., Khan, M.R., and Bayat, A. (2015) “Evaluation of Variation in Unbound Layers’ Moduli and its Effect on Pavement Design,” International Journal of Geotechnical Engineering. Volume 9, Issue 2, pp. 140-149. DOI: 10.1179/1939787914Y.0000000040

Salimi, S., Nassiri, S., and Bayat, A. (2014) “Using Lateral Coefficient of Friction to Evaluate Effectiveness of Plowing and Sanding Operations,” Canadian Journal of Civil Engineering, Volume 41, Issue 11, pp. 977-985. DOI: 10.1139/cjce-2014-0076

Khazraeializadeh, S., Gay, L., and Bayat, A. (2014) “Comparative Analysis of Sewer Physical Condition Grading Protocols for the City of Edmonton,” Canadian Journal of Civil Engineering, Volume 41, Issue 9, pp. 811-818. DOI: 10.1139/cjce-2014-0077

Farkhideh, N., Nassiri, S., and Bayat, A. (2014) “Evaluation of accuracy of Weigh-In-Motion systems in Alberta,” International Journal of Pavement Research and Technology, Volume 7, Issue 3, pp. 169-177. DOI: 10.6135/ijprt.org.tw/2014.7(3).169

Saha, J., Nassiri, S., Bayat, A., and Soleymani, H. (2014) “Evaluation of the effects of Canadian climate conditions on the MEPDG predictions for flexible pavement performance,” International Journal of Pavement Engineering, Volume 15, Issue 5, pp. 392-401. DOI: 10.1080/10298436.2012.752488

Akbarzadeh, H. and Bayat, A. (2014) “Investigating ASTM F 1962 Arching Factor for Polyethylene Pipes Installed by Horizontal Directional Drilling,” Journal of Tunneling and Underground Space Technology, Volume 39, pp. 50-57. http://dx.doi.org/10.1016/j.tust.2012.04.005.

Tavafzadeh, N., Nassiri, S., Shafiee, M.H., and Bayat, A. (2014) “Using Field Data to Evaluate Bottom Ash as Pavement Insulation Layer,” Transportation Research Record: Journal of the Transportation Research Board, Volume 2433, pp. 39-47. DOI: 10.3141/2433-05

Meles, D., Bayat, A., and Chan, D. (2014) “One-Dimensional Compression Model for Tire Derived Aggregate Using Large-Scale Testing Apparatus,” International Journal of Geotechnical Engineering, Volume 8, Issue 2, pp. 197-204. DOI: 10.1179/1939787913Y.0000000019

Meles, D., Bayat, A., Shafiee, M., Nassiri, S. and Gul, M. (2014) “Investigation of Tire Derived Aggregate as a Fill Material for Highway Embankment,” International Journal of Geotechnical Engineering, Volume 8, Issue 2, pp. 182-190. DOI: 10.1179/1939787913Y.0000000015.

Norouzi, M., Nassiri, S., Tavafzadeh, N. and Bayat A. (2014) “Performance Evaluation of Asphalt Overlays in Alberta using Long Term Pavement Performance Specific Pavement Studies 5 Sections,” International Journal of Pavement Research and Technology, Volume 7, Issue 1, pp 60-68. DOI: 10.6135/ijprt.org.tw/2014.7(1).60.

Nassiri, S., Bayat, A., Kilburn, P. (2014) “Traffic Inputs for Mechanistic Empirical Pavement Design Guide Using Weigh-In-Motion Systems in Alberta,” International Journal of Pavement Engineering, Volume 15, No. 6, pp 483-494. DOI: 10.1080/10298436.2013.797978

Nassiri, S., Shafiee, M.H. and Bayat, A. (2013) “Development of Roughness Models Using Alberta Transportation’s Pavement Management System,” International Journal of Pavement Research and Technology, Volume 6, No. 6, pp. 714-720. DOI: 10.6135/ijprt.org.tw/2013.6(6).714

Norouzi, M., Nassiri, S. and Bayat, A. (2013) “Evaluation of Seasonal Variation in Mechanistic Responses of Flexible Pavements Through Use of Falling Weight Deflectometer Data,” Transportation Research Record: Journal of the Transportation Research Board, Volume 2369, Issue 1, pp 30–37. DOI: 10.3141/2369-04

Nassiri, S., Bayat, A. (2013) “Evaluation of MEPDG Seasonal Adjustment Factors for the Unbound Layers’ Moduli Using Field Moisture and Temperature Data,” International Journal of Pavement Research and Technology, Volume 6, No. 1, pp. 45-51.

Meles, D., Bayat, A. and Soleymani, H. (2013) “Compression Behavior of Large Size Tire Derived Aggregate for Embankment Application,” Journal of Materials in Civil Engineering, Volume 25, No. 9, pp 1285-1290. DOI: 10.1061/(ASCE)MT.1943-5533.0000675

Saha, J., Nassiri, S., Soleymani, H. and Bayat, A. (2012) “A Comparative Study between the Alberta Transportation Flexible Pavement Design and the MEPDG,” International Journal of Pavement Research and Technology, Volume 5, No. 6, pp 379-385.

Bayat, A., Knight, M., and Soleymani, H. (2012) “Field monitoring and comparison of thermal- and load-induced strains in asphalt pavement,” International Journal of Pavement Engineering, Volume 13, Issue 6, pp. 508-514. DOI: 10.1080/10298436.2011.577776

Akbarzadeh, H., Bayat, A., and Soleymani, H. (2012) “Analytical Review of the HMA Temperature Correction Factors from Laboratory and Falling Weight Deflectometer Tests,” International Journal of Pavement Research and Technology, Volume 5, Issue 1, pp. 30-39.

Bayat, A., and Knight, M. (2011) “Field Evaluation and Analysis of Flexible Pavement Structural Responses under Dynamic Loads,” Road Materials and Pavement Design, Volume 13, Issue 1, pp. 26-37. DOI: 10.1080/14680629.2011.637026

Bayat, A., and Knight, M. (2010) “Investigation of Hot-Mix Asphalt Dynamic Modulus by means of Field Measured Pavement Response,” Transportation Research Record: Journal of the Transportation Research Board, Volume 2154, pp. 138-145. DOI: 10.3141/2154-14

CIV E 609 - Underground Trenchless Construction

Introduction to underground pipeline infrastructure. Focus on pipeline condition assessment. New construction such as horizontal directional drilling, pilot tube microtunneling, pipe bursting, and pipe jacking. Rehabilitation methods such as cured in place pipe lining, geotechnical consideration. Risk considerations for underground projects.

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