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185. Shangguan, P.*, Al-Qadi, I. L., Leng, Z., Schmitt, R. L., and Faheem, A. (2013). Innovative Approach for Asphalt Pavement Compaction Monitoring with Ground-Penetrating Radar. Transportation Research Record, 2347(1), 79–87. https://doi.org/10.3141/2347-09
186. Salinas, A.*, Al-Qadi, I. L., Hasiba, K. I., Ozer, H., Leng, Z., and Parish, D. C. (2013). Interface Layer Tack Coat Optimization. Transportation Research Record, 2372(1), 53–60. https://doi.org/10.3141/2372-07
187. Feng, D.*, Xie, N.*, Gong, C., Leng, Z., Xiao, H., Li, H., and Shi, X. (2013). Portland Cement Paste Modified by TiO2 Nanoparticles: A Microstructure Perspective. Industrial & Engineering Chemistry Research, 52(33), 11575–11582. https://doi.org/10.1021/ie4011595
188. Shangguan, P.*, Al-Qadi, I. L., and Leng, Z. (2012). Ground-Penetrating Radar Data to Develop Wavelet Technique for Quantifying Railroad Ballast–Fouling Conditions. Transportation Research Record, 2289(1), 95–102. https://doi.org/10.3141/2289-13
189. Leng, Z.*, Al-Qadi, I. L., Shangguan, P., and Son, S. (2012). Field Application of Ground-Penetrating Radar for Measurement of Asphalt Mixture Density: Case Study of Illinois Route 72 Overlay. Transportation Research Record, 2304(1), 133–141. https://doi.org/10.3141/2304-15
190. Ozer, H.*, Al-Qadi, I.L., Wang, H., Leng, Z., (2012). Characterisation of interface bonding between hot-mix asphalt overlay and concrete pavements: modelling and in-situ response to accelerated loading. International Journal of Pavement Engineering 13, 181–196. https://doi.org/10.1080/10298436.2011.596935
191. Al-Qadi, I. L.*, Wang, H., Baek, J., Leng, Z., Doyen, M., and Gillen, S. (2012). Effects of Curing Time and Reheating on Performance of Warm Stone-Matrix Asphalt. Journal of Materials in Civil Engineering, 24(11), 1422–1428. https://doi.org/10.1061/(ASCE)MT.1943-5533.0000513
192. Al-Qadi, I. L.*, Leng, Z., Baek, J., Wang, H., Doyen, M., and Gillen, S. L. (2012). Short-Term Performance of Plant-Mixed Warm Stone Mastic Asphalt: Laboratory Testing and Field Evaluation. Transportation Research Record, 2306(1), 86–94. https://doi.org/10.3141/2306-10
193. Leng, Z.*, Al-Qadi, I. L., and Lahouar, S. (2011). Development and validation for in situ asphalt mixture density prediction models. NDT & E International, 44(4), 369–375. https://doi.org/10.1016/j.ndteint.2011.03.002
194. Leng, Z.*, and Al-Qadi, I. L. (2010). Railroad Ballast Evaluation Using Ground-Penetrating Radar: Laboratory Investigation and Field Validation. Transportation Research Record, 2159(1), 110–117. https://doi.org/10.3141/2159-14
195. Al-Qadi, I. L.*, Xie, W., Roberts, R., and Leng, Z. (2010). Data Analysis Techniques for GPR Used for Assessing Railroad Ballast in High Radio-Frequency Environment. Journal of Transportation Engineering, 136(4), 392–399. https://doi.org/10.1061/(ASCE)TE.1943-5436.0000088
196. Al-Qadi, I.*, Leng, Z., Lahouar, S., and Baek, J. (2010). In-Place Hot-Mix Asphalt Density Estimation Using Ground-Penetrating Radar. Transportation Research Record, 2152(1), 19–27. https://doi.org/10.3141/2152-03
197. Leng, Z.*, Al-Qadi, I. L., Carpenter, S. H., and Ozer, H. (2009). Interface Bonding between Hot-Mix Asphalt and various Portland Cement Concrete Surfaces: Assessment of Accelerated Pavement Testing and Measurement of Interface Strain. Transportation Research Record, 2127(1), 20–28. https://doi.org/10.3141/2127-03
198. Ozer, H.*, Al-Qadi, I. L., and Leng, Z. (2008). Fracture-Based Friction Model for Pavement Interface Characterization. Transportation Research Record, 2057(1), 54–63. https://doi.org/10.3141/2057-07
199. Leng, Z.*, Ozer, H., Al-Qadi, I. L., and Carpenter, S. H. (2008). Interface Bonding between Hot-Mix Asphalt and Various Portland Cement Concrete Surfaces: Laboratory Assessment. Transportation Research Record, 2057(1), 46–53. https://doi.org/10.3141/2057-06