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31

Leng, Zhen (冷真)

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Homepage: http://www.polyu.edu.hk/cee/~zhenleng

Curriculum Vitae

Teaching Areas

Postgraduate

  • Transport Management (CSE 514)
  • Land Transport and Environment (CSE 535)

Undergraduate

  • Construction Management II (CSE 414)

 

Research Interests

 

Sustainable Pavement Materials and Technologies, Nondestructive Testing of Transportation Structures, Infrastructure Life Cycle Assessment, Accelerated Pavement Testing and Instrumentation

Publications

 

  1. A. Sreeram, and Z. Leng*, Variability of rap binder mobilisation in hot mix asphalt mixtures, Construction and Building Materials, Vol 201, Mar 2019, pp. 502-509. https://doi.org/10.1016/j.conbuildmat.2018.12.212
  2. Z. Dong*, T. Zhou, H. Luan, R.C. Williams, P. Wang, and Z. Leng, Composite modification mechanism of blended bio-asphalt combining styrene-butadiene-styrene with crumb rubber: A sustainable and environmental-friendly solution for wastes, Vol. 214, Mar 2019, pp. 593-605. https://doi.org/10.1016/j.jclepro.2019.01.004
  3. R. Cao^, Z. Leng*, and S.C. Hsu, Comparative eco-efficiency analysis on asphalt pavement rehabilitation alternatives: Hot in-place recycling and milling-and-filling, Journal of Cleaner Production, Vol. 210, Feb 2019, pp. 1385-1395. https://doi.org/10.1016/j.jclepro.2018.11.122
  4. C. Hu, J. Zhao, Z. Leng*, M. N. Partl, and R. Li^, Laboratory evaluation of waterborne epoxy bitumen emulsion for pavement preventative maintenance application, Construction and Building Materials, Vol. 197, Feb 2019, pp. 220-227. https://doi.org/10.1016/j.conbuildmat.2018.11.223
  5. D. Wang, D. Li, J. Yan, Z. Leng, Y. Wu, J. Yu, and H. Yu*, Rheological and chemical characteristic of warm asphalt rubber binders and their liquid phases, Construction and Building Materials, Vol. 193, Dec 2018, pp. 547-556. https://doi.org/10.1016/j.conbuildmat.2018.10.199
  6. Z. Leng*, A. Sreeram, R. Padhan, Z. Tan, Value-added application of waste PET based additives in bituminous mixtures containing high percentage of reclaimed asphalt pavement (RAP), Journal of Cleaner Production, Vol. 196, Sep 2018, pp. 615-625. https://doi.org/10.1016/j.jclepro.2018.06.119
  7. R. Zhong^, Z. Leng*, and C.S. Poon, Research and application of pervious concrete as a sustainable pavement material: A state-of-the-art and state-of-the-practice review, Construction and Building Materials, Vol. 183, Sep 2018, pp. 544-553. https://doi.org/10.1016/j.conbuildmat.2018.06.131
  8. Z. Leng*, H. Yu^, and Z. Gao^, Study on air-purifying performance of asphalt mixture specimens coated with titanium dioxide using different methods, International Journal of Pavement Research and Technology, Sep 2018. https://doi.org/10.1016/j.ijprt.2018.08.003
  9. A. Sreeram^, Z. Leng*, Y. Zhang, and R. Padhan, Evaluation of RAP binder mobilisation and blending efficiency in bituminous mixtures: An approach using ATR-FTIR and artificial aggregate, Construction and Building Materials, Vol. 179, Aug 2018, pp. 245-253. https://doi.org/10.1016/j.conbuildmat.2018.05.154
  10. H. Yu^, Z. Leng*, Z. Dong, Z. Tan^, F. Guo^, and J. Yan^, Workability and mechanical property characterization of asphalt rubber mixtures modified with various warm mix asphalt additives, Construction and Building Materials, Vol. 175, Jun 2018, pp. 392-401. https://doi.org/10.1016/j.conbuildmat.2018.04.218
  11. W. Liu, H Zhou, B. Wang, Y. Zhao, Z. Leng, X. Chen, L. Li, S. Wang, Z. Chen, A subgrade cracking monitoring sensor based on optical fiber sensing technique, Structural Control Health Monitoring, Vol. 25, Jun 2018. https://doi.org/10.1002/stc.2213
  12. Z. Leng*, R. Padhan, A. Sreeram, Production of a sustainable paving material through chemical recycling of waste PET into crumb rubber modified asphalt, Journal of Cleaner Production, Vol. 180, Apr 2018, pp. 682-688. https://doi.org/10.1016/j.jclepro.2018.01.171
  13. Z. Leng*, I. Al-Qadi, and R. Cao^, Life-cycle economic and environmental assessment of warm stone mastic asphalt, Transportmetrica A: Transport Science, Vol. 14, 2018, pp. 562-575. https://doi.org/10.1080/23249935.2017.1390707
  14. Z. Leng*, Z. Tan^, H. Yu^, and J. Guo^, Improvement of storage stability of SBS-modified asphalt with nanoclay using a new mixing method, Road Materials and Pavement Design, 2018. https://doi.org/10.1080/14680629.2018.1465842
  15. Z. Leng*, Z. Zhang^, Y. Zhang^, Y. Wang^, H. Yu^, and T. Ling, Laboratory evaluation of electromagnetic density gauges for hot-mix asphalt mixture density measurement, Construction and Building Materials, Vol. 158, Jan 2018, pp. 1055-1064. https://doi.org/10.1016/j.conbuildmat.2017.09.186
  16. Y. Zhang^, Z. Leng*, Z. Dong, Z. Liu, Z. Zhang^, Z. Tan^, Performance verification of various bulk density measurement methods for open- and gap-graded asphalt mixtures using X-ray computed tomography, Construction and Building Materials, Vol. 158, Jan 2018, pp. 855-863. https://doi.org/10.1016/j.conbuildmat.2017.10.090
  17. Y. Zhang^, Z. Leng*, L. Wang, S. Chen, C.W. Tsang, Synthesis of zeolite A using sewage sludge ash for application in warm mix asphalt, Journal of Cleaner Production, Vol. 172, Jan 2018, pp. 686-695. https://doi.org/10.1016/j.jclepro.2017.10.005
  18. D. Wang*, P. Liu; Z. Leng*, C. Leng, G. Lu, M. Buch, and M. Oeser, Suitability of PoroElastic Road Surface (PERS) for urban roads in cold regions: mechanical and functional performance assessment, Journal of Cleaner Production, Vol.165, Nov 2017, pp.1340-360. https://doi.org/10.1016/j.jclepro.2017.07.228
  19. D. Wang, Z. Leng*, H. Yu^, M. Huben, J. Kollmann, and M. Oeser. Durability of epoxy-bonded TiO2-modified aggregate as a photocatalytic coating layer for asphalt pavement under vehicle tire polishing, Wear, Vol 382-383, July 2017, pp. 1-7. https://doi.org/10.1016/j.wear.2017.04.004
  20. Z. Leng*, H. Yu^, Z. Zhang^, and Z. Tan^, Optimizing the mixing procedure of warm asphalt rubber with wax-based additives through mechanism investigation and performance characterization, Construction and Building Materials, Vol 144, July 2017, pp. 291-299. https://doi.org/10.1016/j.conbuildmat.2017.03.208
  21. J. Yan^, Z. Leng*, F. Li, H. Zhu, and S. Bao, Early-age strength and long-term performance of asphalt emulsion cold recycled mixes with various cement contents, Construction and Building Materials, Vol 137, April 2017, pp. 153-159. https://doi.org/10.1016/j.conbuildmat.2017.01.114
  22. C. Hu*, J. Ma, J. Zhao, Z. Leng, and D. Jelagin, Experimental study of dowel bar alternatives based on similarity model test, Advances in Materials Science and Engineering, Volume 2017 (2017), Article ID 3981908, 9 pages. https://doi.org/10.1155/2017/3981908
  23. Y. Zhang^, and Z. Leng*, Quantification of bituminous mortar ageing and its application in ravelling evaluation of porous asphalt wearing courses, Materials and Design, Vol 119, April 2017, pp. 1-11. https://doi.org/10.1016/j.matdes.2017.01.052
  24. D. Wang, A. Schacht, Z. Leng*, C. Leng, J. Kollmann, and M. Oeser, Effects of material composition on mechanical and acoustic performance of poroelastic road surface (PERS), Construction and Building Materials, Vol 135, March 2017, pp. 352-360. https://doi.org/10.1016/j.conbuildmat.2016.12.207
  25. H. Yu^, Z. Leng*, Z. Zhou, K. Shih, F., Xiao, and Z. Gao^, Optimization of preparation procedure of liquid warm mix additive modified asphalt rubber, Journal of Cleaner Production, Vol 141, January 2017, pp. 336–345. (ESI Highly Cited Paper, top 1% citation) https://doi.org/10.1016/j.jclepro.2016.09.043
  26. S. Lin^, W.T. Hung, and Z. Leng, Air pollutant emissions and acoustic performance of hot mix asphalts, Construction and Building Materials, Vol 129, November 2016, pp. 1-10. https://doi.org/10.1016/j.conbuildmat.2016.11.013
  27. H. Yu^, Z. Leng*, and Z. Gao^, Thermal analysis on the component interaction of asphalt binders modified with crumb rubber and warm mix additives, Construction and Building Materials, Vol 125, October 2016, pp. 168–174. https://doi.org/10.1016/j.conbuildmat.2016.08.032
  28. H. Yu^, Z. Leng*, F. Xiao, and Z. Gao^. Rheological and chemical characteristics of rubberized binders with non-foaming warm mix additives, Construction and Building Materials, Vol. 111, pp.671-678, 2016. https://doi.org/10.1016/j.conbuildmat.2016.02.066
  29. D. Wang, Z. Leng*, M. Hüben, M. Oeser, and B. Steinauer. Photocatalytic pavements with epoxy-bonded TiO2-containing spreading material, Construction and Building Materials, Vol. 107, March 2016, pp. 44-51. https://doi.org/10.1016/j.conbuildmat.2015.12.164
  30. Z. Leng*, and H. Yu^. Novel method of coating titanium dioxide on to asphalt mixture based on the breath figure process for air-purifying purpose, Journal of Materials in Civil Engineering, Vol 28, Issue 5, 2016. https://doi.org/10.1061/(ASCE)MT.1943-5533.0001478
  31. D. Wang*, M. Hueben, Z. Leng, M. Oeser, and B. Steinauer, Production and laboratory tests of TiO2-containing spreading material for decomposition of nitrogen dioxide, BAUINGENIEUR, Vol. 90, March 2015, pp. 140-146. http://ira.lib.polyu.edu.hk/handle/10397/55801
  32. Y. Wang*, Z. Leng, and G. Wang, Structural contribution of open-graded friction course mixes in mechanistic-empirical pavement design, International Journal of Pavement Engineering, Vol. 15, No. 8, September 2014, pp. 731-741. https://doi.org/10.1080/10298436.2013.857776
  33. X. Yu, Z. Leng*, and Y. Wang. Characterization of the effect of foaming water content on the performance of foamed crumb rubber modified asphalt. Construction and Building Materials, Vol 67, Part B, September 2014, pp. 279-284. https://doi.org/10.1016/j.conbuildmat.2014.03.046
  34. Z. Leng*, and I. Al-Qadi. An innovative method for measuring pavement dielectric constant using the extended CMP method with two air-coupled GPR systems. NDT & E International, Vol. 66, September 2014, pp.90–98. https://doi.org/10.1016/j.ndteint.2014.05.002
  35. L. Zhou*, F. Ni, and Z. Leng, Development of an asphalt pavement distress evaluation method for freeways in China, Journal of Pavement Research & Technology, Vol. 7 Issue 2, pp.159-167, 2014. http://dx.doi.org/10.6135/ijprt.org.tw/2014.7(2).159
  36. D. Feng*, N. Xie*, C. Gong, Z. Leng, H. Xiao, H. Li, and X. Shi. Portland cement paste modified by TiO2 nanoparticles: a microstructure perspective, Journal of Industry & Engineering Chemistry Research, 52, pp.11575−11582, 2013. http://dx.doi.org/10.1021/ie4011595
  37. Z. Leng*, A. Gamez, and I. Al-Qadi, Mechanical property characterization of warm-mix asphalt prepared with chemical additives, Journal of Materials in Civil Engineering, 26(2), pp.304-311, 2014. https://doi.org/10.1061/(ASCE)MT.1943-5533.0000810
  38. X. Yu, Z. Leng*, and T. Wei, Investigation of the rheological modification mechanism of warm-mix additives on crumb rubber modified asphalt, Journal of Materials in Civil Engineering, 26(2), pp.312-319, 2014. https://doi.org/10.1061/(ASCE)MT.1943-5533.0000808
  39. A. Salinas*, I. Al-Qadi, K. Hasiba, H. Ozer, Z. Leng, and D. Parish, Interface Layer Tack Coat Optimization, Journal of Transportation Research Record, TRR2372, pp.53-61, 2013. https://doi.org/10.3141%2F2372-07
  40. P. Shangguan*, I. Al-Qadi, and Z. Leng, Innovative approach for asphalt pavement compaction monitoring using ground-penetrating radar, Journal of Transportation Research Record, TRB2347, pp.79-87, 2013. http://dx.doi.org/10.3141/2347-09
  41. Z. Leng*, I. Al-Qadi, and P. Shangguan, Field application of ground penetrating radar for asphalt mixture density measurement: a case study of Illinois route 72 overlay. Journal of Transportation Research Record, TRR2304, 2012, pp. 133-141. https://doi.org/10.3141%2F2304-15
  42. I. Al-Qadi*, Z. Leng, J. Baek, H. Wang, M. Doyen, and S. Gillen, Short-term performance of plant-mixed warm stone mastic asphalt, Journal of Transportation Research Record, TRR2306, pp.86-94, 2012. https://doi.org/10.3141/2306-10
  43. P. Shangguan*, I. Al-Qadi, and Z. Leng, Development of wavelet technique for railroad ballast fouling condition quantification using ground penetrating radar data, Journal of Transportation Research Record, TRR2289, 2012, pp. 95-102. http://dx.doi.org/10.3141/2289-13
  44. I. Al-Qadi*, H. Wang, J. Baek, Z. Leng, M. Doyen, and S. Gillen, Effects of curing time and reheating on performance of warm stone matrix asphalt. Journal of Materials in Civil Engineering, 24(11), 2012, pp. 1422-1428. https://doi.org/10.1061/(ASCE)MT.1943-5533.0000513
  45. H. Ozer*, I. Al-Qadi, H. Wang, and Z. Leng, 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, Vol. 13, No. 2, 2012, pp. 181-196. https://doi.org/10.1080/10298436.2011.596935
  46. Z. Leng*, I. Al-Qadi, and S. Lahaour, Development and validation for in-situ asphalt mixture density prediction model, NDT & E International, Elsevier, Vol. 44, Issue 4, 2011, pp. 369-375. https://doi.org/10.1016/j.ndteint.2011.03.002
  47. I. Al-Qadi*, Z. Leng, S. Lahaour, and J. Baek, In-place hot-mix asphalt density measurement using ground penetrating radar, Journal of Transportation Research Record, TRR 2152, 2010, pp.19-27. https://doi.org/10.3141/2152-03
  48. Z. Leng*, and I. Al-Qadi, Railroad ballast evaluation using ground penetrating radar: laboratory investigation and field validation, Journal of Transportation Research Record, TRR 2159, 2010, pp.110-117. https://doi.org/10.3141%2F2159-14
  49. I. Al-Qadi*, W. Xie, R. Robert, and Z. Leng, Data analysis techniques for GPR used for assessing railroad ballast in high radio-frequency environment, Journal of Transportation Engineering, Vol.136, Issue 4, 2009, pp.392-399. https://doi.org/10.1061/(ASCE)TE.1943-5436.0000088
  50. Z. Leng*, I. Al-Qadi, S. Carpenter, and H. Ozer, Interface bonding between HMA and various PCC surfaces: APT assessment and interface strain measurements, Journal of Transportation Research Record, TRR 2127, 2009, pp.20-28. http://dx.doi.org/10.3141/2127-03
  51. Z. Leng*, H. Ozer, I. Al-Qadi, and S. Carpenter, Interface bonding between HMA and various PCC surfaces: laboratory assessment, Journal of Transportation Research Record, TRR 2057, 2008, pp. 46-53. https://doi.org/10.3141%2F2057-06
  52. H. Ozer*, I. Al-Qadi, Z. Leng, A fracture based friction model for pavement interface characterization, Journal of Transportation Research Record, TRR 2057, 2008, pp. 54-63. http://dx.doi.org/10.3141/2057-07

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