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Advances in Civil Engineering
Volume 2011 (2011), Article ID 936395, 6 pages
http://dx.doi.org/10.1155/2011/936395
Research Article

A Methodology for Determination of Resilient Modulus of Asphaltic Concrete

1Department of Civil Engineering, VSS University of Technology, Burla 768018, India
2Geotechnical Engineering Division, Department of Civil Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
3Transportation Engineering Division, Department of Civil Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India

Received 29 December 2010; Accepted 7 March 2011

Academic Editor: Nagaratnam Sivakugan

Copyright © 2011 A. Patel et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Resilient modulus, 𝑀 𝑅 , is an important parameter for designing pavements. However, its determination by resorting to cyclic triaxial tests is tedious and time consuming. Moreover, empirical relationships, correlating 𝑀 𝑅 to various other material properties (namely, California Bearing Ratio, CBR; Limerock Bearing Ratio, LBR; R-value and the Soil Support Value, SSV), give vast variation in the estimated results. With this in view, an electronic circuitry, which employs bender and extender elements (i.e., piezo-ceramic elements), was developed. Details of the circuitry and the testing methodology adopted for this purpose are presented in this paper. This methodology helps in determining the resilient modulus of the material quite precisely. Further, it is believed that this methodology would be quite useful to engineers and technologists for conducting quality check of the pavements, quite rapidly and easily.