Structural Evaluation of Flexible Pavement Using Non-destructive Techniques in Low Volume Road

  • Vinod KumarEmail author
  • Sunny Deol
  • Rakesh Kumar
Conference paper
Part of the Sustainable Civil Infrastructures book series (SUCI)


Low volume roads (LVR) are most accessible road network in India, and it contains thin asphalt surface (less than 100 mm). For this type of roads, a light weight deflectometer (LWD) may be useful for structural evaluating the pavement layer moduli and overlay design. In some parts around the globe, still uses conventional Benkelman beam deflectometer (BBD) method for structural evaluation purpose. In this paper, an experimental stretch 550 m length and width 7 m was considered for structural evaluating the pavement using LWD and BBD. Pavement deflection response data collected using a Benkelman Beam deflectometer (BBD) and lightweight deflectometer used to identify structural integrity of pavement. Deflections collected by LWD using 20 kg falling weight with radial geophone spacing 300 mm and 600 mm are used in this study. The proposed methodology for overlay design using LWD, LWDmod, and KENLAYER software’s results was discussed. Obtained backcalculated layer moduli results are used to calculate critical stresses and strains generated by standard axle load of 8 tons by using KENLAYER software. The LWDmod overlay thickness analysis ranges from 28.00 to 180 mm, and BBD based calculated overlay thickness ranges 10 to 210 mm were observed. The correlation of deflection values between LWD and BBD was found with R2 value of 0.741. The practical shortcoming of deflection correlation between BBD and LWD may be overcome by using more data points of LWD in Indian conditions for further research.


Structural evaluation Lightweight deflectometer Benkelman beam deflectometer Kenlayer 


  1. ASTM, E2583-07: Standard test method for measuring deflections with a light weight deflectometer. Annual Book of ASTM Standards, ASTM International, West Conshohocken, PA, 04.03 (2007). doi: 10.1520/E2583-07
  2. Adam, C., Adam, D., Kopf, F.: Computational validation of static and dynamic plate load testing. Acta Geotech. 4(1), 35–55 (2009). doi: 10.1007/s11440-008-0081-0 CrossRefGoogle Scholar
  3. Du Tertre, A., et al.: Combined PFWD and surface wave measurements for evaluation of longitudinal joints in asphalt pavements. In: TRB 2010 Annual Meeting CD-ROM (2010). doi: 10.3141/2152-04
  4. Barodiya, P., Pateriya, I.K.: Estimating maintenance cost of rural roads in PMGSY. J. Indian Highw. 8, 13–27 (2014)Google Scholar
  5. Das, A., Pandey, B.B.: Mechanistic-empirical design of bituminous roads: an Indian perspective. J. Transp. Eng. 125, 463–471 (1999). doi: 10.1061/(ASCE)0733-947X(1999)125:5(463) CrossRefGoogle Scholar
  6. Elbagalati, O., et al.: Development of the pavement structural health index based on falling weight deflectometer testing. Int. J. Pavement Eng. 2016, 1–8 (2016). CrossRefGoogle Scholar
  7. Fleming, P., Frost, M., Lambert, J.: A review of the lightweight deflectometer (LWD) for routine insitu assessment of pavement material stiffness. In: TRB 2007 Annual Meeting CD-ROM. 07-1586, pp. 1–15 (2007). doi: 10.3141/2004-09
  8. Irwin, L.H.: Backcalculation: an overview and perspective. In: Pavement Evaluation Conference. Roanoke, VA (2002)Google Scholar
  9. IRC SP 72-2015: Guidelines for the Design of Flexible Pavements for Low Volume Rural Roads, First Revision, New Delhi, IndiaGoogle Scholar
  10. IRC:37-2012: Guidelines for the Design of Flexible Pavements (Third Revision) New Delhi, IndiaGoogle Scholar
  11. IRC:115-2014: Guidelines for Structural Evaluation and Strengthening of Flexible Road Pavements Using Falling Weight Deflectometer (FWD) Technique, New Delhi, IndiaGoogle Scholar
  12. IRC:117-2015: Guidelines for the Structural Evaluation of Rigid Pavement by Falling Weight Deflectometer, New Delhi, IndiaGoogle Scholar
  13. IRC:81-1997. Strengthening of flexible Road Pavements Using Benkelman Beam Deflection Technique, First revision, New Delhi, IndiaGoogle Scholar
  14. IRC: 82-2015: First Revision of Code of Practice for Maintenance of Bituminous Road Surfaces, New Delhi, IndiaGoogle Scholar
  15. Abaza, K.A.: Performance-based models for flexible pavement structural overlay design. J. Transp. Eng. (2005). doi: 10.1061/(ASCE)0733-947X(2005)131:2(149) Google Scholar
  16. Kavussi, A., Rafiei, K., Yasrobi, S.: Evaluation of PFWD as potential quality control tool of pavement layers. J. Civ. Eng. Manag. 16(1) (2010). doi: 10.3846/jcem.2010.11
  17. Lenngren, C.A.: Relating deflection data to pavement strain. Transp. Res. Rec. 1293, 103–111 (1991)Google Scholar
  18. Zhou, L., Wu, Q., Ling, J.: Comparison of FWD and Benkelman beam in evaluation of pavement structure capacity. In: Geo Shanghai International Conference, pp. 405–411 (2010). doi: 10.1061/41104(377)51
  19. LWDmod: Dynatest International, Glostrup, Denmark (2009)Google Scholar
  20. Molenaar: Structural design of pavements—part VI. Structural evaluation and strengthening of flexible pavements using deflection measurements and visual condition surveys (2009)Google Scholar
  21. MORTH (Ministry of Road, Transport, and Highways): Basic road statistics of India. Transportation Research Wing, New Delhi (2012)Google Scholar
  22. Newcomb, D.E., Lee, S.W., Mahoney, J.P., Jackson, N.C.: The use of falling weight deflectometer data in monitoring. In: Bush III, A.J., Baladi, G.Y. (eds.) ASTM STP 1026, pp. 470–486. American Society for Testing and Materials, Philadelphia (1989)Google Scholar
  23. Reddy, B.B., Veeraragavan, A.: Structural performance of in-service pavements. J. Transp. Eng. 123, 156–167 (1997)CrossRefGoogle Scholar
  24. Steinert, B.C., Humphrey, D.N., Kestler, M.A.: Portable falling weight deflectometer for tracking seasonal stiffness variations in asphalt surfaced roads. In: TRB 2006 Annual Meeting CD-ROM (2006)Google Scholar
  25. Senseny, C., Krahenbuhl, R., Mooney, M.A.: Genetic algorithm to optimize layer parameters in lightweight deflectometer backcalcualtion. Int. J. Geomech., 473–476 (2013). doi: 10.1061/(ASCE)GM.1943-5622.0000222
  26. Ullidtz, P., Coetzee, N.F.: Analytical Procedures in Nondestructive Testing Pavement Evaluation. Transportation Research Record, 1482, Transportation Research Board, Washington, DC, pp. 61–66 (1995)Google Scholar
  27. Umashankar, B., Hariprasad, C., Thejesh Kumar, G.: Compaction quality control of pavement layers using LWD. J. Mater. Civ. Eng. (2015). doi: 10.1061/(ASCE)MT.1943-5533.0001379
  28. Veeraragavan, A., Dattatreya, J.K., Prabhudeva, M.: Development of failure criteria for flexible overlays for Indian conditions. IRC J. 52(1), 183–204 (1991)Google Scholar
  29. Ziari, H., Khabiri, M.M.: Interface condition influence on prediction of flexible pavement life. J. Civ. Eng. Manag. XIII, 71–76 (2007). doi: 10.1080/13923730.2007.9636421 Google Scholar

Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  1. 1.Department of Civil EngineeringSVNIT SuratSuratIndia

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