SASW evaluation of asphaltic and cement concrete pavements using different heights of fall for a spherical mass

Kumar, Jyant and Rakaraddi, Prabhu G (2013) SASW evaluation of asphaltic and cement concrete pavements using different heights of fall for a spherical mass. In: International Journal of Pavement Engineering, 14 (4). pp. 354-363.

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Abstract

A number of spectral analysis of surface wave tests were performed on asphaltic and cement concrete pavements by dropping freely a 6.5kg spherical mass, having a radius of 5.82cm, from a height (h) of 0.51.5m. The maximum wavelength ((max)), up to which the shear wave velocity profile can be detected with the usage of surface wave measurements, increases continuously with an increase in h. As compared to the asphaltic pavement, the values of (max) and (min) become greater for the chosen cement concrete pavement, where (min) refers to the minimum wavelength. With h=0.5m, a good assessment of the top layers of both the present chosen asphaltic and the cement concrete pavements, including soil subgrade, can be made. For a given h, as compared to the selected asphaltic pavement, the first receiver in case of the chosen cement concrete pavement needs to be placed at a greater distance from the source. Inverse analysis has also been performed to characterise the shear wave velocity profile of different layers of the pavements.

Item Type:	Journal Article
Publication:	International Journal of Pavement Engineering
Publisher:	Taylor and Francis Ltd
Additional Information:	Copyright of this article belongs to Taylor and Francis Ltd.
Keywords:	Flexible Pavements; Non-Destructive Testing; Rigid Pavements; Spectral Analysis of Surface Wave; Wave Propagation
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	30 May 2013 11:27
Last Modified:	30 May 2013 11:27
URI:	http://eprints.iisc.ac.in/id/eprint/46604

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