PUBLICATIONS

Journal Papers

Conference Papers

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1. Mick Atha, Wallace W.L. Lai and Ray Chang K.W. GPR Surveys and Excavation Ground-Truthing at the San Tau Backbeach Site, Hong Kong. 16th International Conference of Ground Penetrating Radar (13-16 June 2016), Hong Kong.

 

2. Janet F.C. Sham, Wallace W.L. Lai and H. C. Leung. Dielectric Hysteresis of Heterogeneous Water Distribution observed in Soil’s Wetting and Drying Process by GPR. 16th International Conference of Ground Penetrating Radar (13-16 June 2016), Hong Kong.

 

3. Wallace W.L. Lai, Janet Fung-Chu Sham and Fei Xie.  Correction of GPR wave velocity with distorted hyperbolic reflection in underground utility’s GPR survey. 16th International Conference of Ground Penetrating Radar (13-16 June 2016), Hong Kong.

 

4. Phoebe T. W. WONG, Wallace W. L. LAI and Motoyuki S. Time-frequency spectral analysis of step frequency continuous wave and impulse ground penetrating radar. 16th International Conference of Ground Penetrating Radar (13-16 June 2016), Hong Kong.

 

5. J. F.C.  Sham and W.W.L Lai. A New Algorithm for More Accurate Estimation of Wave Propagation Velocity by Common-Offset Survey Method. International Symposium Non-Destructive Testing in Civil Engineering 15-17 Sep 2015, p. 305-315.

 

6. F.W.Y.Chan and W. W.L. Lai. HKAS Proficiency Testing Programmes for Evaluation of Performance of Accredited Laboratories. International Symposium Non-Destructive Testing in Civil Engineering 15-17 Sep 2015, p. 504-507.

 

7. Wallace W.L. Lai. Vision to the Underground Utility Professional Discipline in Hong Kong, The 4th International conference on Utility Management & Safety (ICUMAS) Summit, Beijing on 14-16 Nov 2014.

 

8. Wallace W.L. Lai. Spectral shift and absorption of ground penetrating radar signals in a wetted sand column, 15th International Conference on Ground Penetrating Radar (GPR 2014), Brussels, Belgium on 30 June to 4 July 2014, paper no. 0127.

 

9. W.L. Lai and C.S. Poon. Durability and debond evaluation of high-rise  concrete buildings using infrared thermography. First International Conference on Performance-based and Life-cycle Structural Engineering. 5-7 Dec 2012, Hong Kong.

 

10. W.L. Lai and C.S. Poon. Boundary and size estimation of debonds in external wall finishes of high-rise buildings using Infrared thermography, 11th Quantitative Infrared Thermography (QIRT 2012) Naples, Italy on 11-14 June 2012, paper no. QIRT 2012-279.

 

11. W.L. Lai and C.S. Poon. GPR data analysis in time-frequency domain, 14th International Conference on Ground Penetrating Radar (GPR 2012), Shanghai, China on 4-8 June 2012, paper no. 0083.

 

12. W.L. Lai, K.K.Lee, S.C.Kou, C.S.Poon, W.F.Tsang. A study of full-field debond behavior of CFRP-reinforced concrete beams, RILEM Conference on "Advances in Construction Materials through Science and Engineering", 2011, paper no. 176.

 

13. B. J. Zhan, W.L. Lai, S.C. Kou, C.S. Poon, W.F. Tsang. Correlation between accelerated steel corrosion in concrete and ground penetrating radar parameters, RILEM Conference on "Advances in Construction Materials through Science and Engineering", 2011, paper no. 178.

 

14. W.L. Lai, T. Kind, H. Wiggenhauser. Effects of high chloride contamination on direct wave of ground penetrating radar, Structural Materials Technology (SMT) Conference, 16-20 Aug 2010, New York, US.

 

15. W.L. Lai, T. Kind, H. Wiggenhauser. Detection of accelerated reinforcement corrosion in concrete by Ground Penetrating Radar, International Conference on Ground Penetrating Radar, 21-25 June 2010, Leece, Italy.

 

16. W.L. Lai, S. C. Kou, C.S. Poon, W. Tsang, K.K. Lee. A Study of Using Full-field Thermographic Technique to Characterize the Shear Behaviour of Externally Bonded CFRP-concrete Composites, 4th International Conference on Structural Health Monitoring on Intelligent Infrastructure (SHMII-4) 22-24 July 2009, Zurich, Switzerland. No. 578.

 

17. C.S. Poon, W. L. Lai, S. C. Kou, W. F. Tsang and C. C. Lai. A Quantitative Study on Bond Behavior between Fiber-reinforced Polymer (FRP) and Concrete Interface Using Infra-red Thermography (IRT), The First Asia-Pacific Conference on FRP in Structures, 12-14 December 2007, Hong Kong, 717-721, 2007.

 

18. W. L. Lai and S. Tsang, Characterization of Soil Texture by Dielectric Properties using Ground Penetrating Radars operating at Different Frequencies of Cyclic Variation of Moisture Content of Soils, Society of Exploration Geophysics International Exposition and Seventy-Fifth Annual Meeting, 1192-1195, 2005.

 

19. W. L. Lai and S. Tsang, Experimental Evaluation of Honeycombed Concrete by Surface Penetrating Radar, American Society of Non-Destructive Testing Fall Conference & Quality Testing Show 2005, Columbus, Ohio, USA, 435-438, 2005.

 

20. X. Z. Shuang, K. Wong., W. L. Lai and Kwok Z., Pitfall of GPR Survey in Dielectric Property Calibration, 4th Asian Symposium on Engineering Geology and the Environment, 2004, Hong Kong.

 

21. W. L. Lai, S Tsang and F. Chan, A Preliminary Study of Data Fusion Techniques (DFTs) on Evaluation of Defective Concrete by Pulsed Radar and Ultrasonic System, British Institute of Non-Destructive Testing Conference, 139-144, 2003, UK.

 

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