Record Details

Experimental study for evaluating crack retardation of asphalt concrete overlays

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Experimental study for evaluating crack retardation of asphalt concrete overlays
 
Creator BHOSALE, SS
MANDAL, JN
 
Subject reflection cracks
opening mode
mixed mode
crack retardation
differential deflection
open graded asphalt concrete
reinforced overlay
base isolation effectiveness factor
fabric effectiveness factor
decay parameters
 
Description This paper presents the development of Asphalt Concrete Slab Fatigue Testing Equipment and its use in evaluating crack retardation of AC overlay under opening and mixed modes of displacement. The dense bituminous macadam (DBM) and the unreinforced and geotextile reinforced open graded asphalt concrete (OGA) overlays are investigated under cyclic simulated thermal and traffic loads having 5 mm differential deflection with zero load efficiency factor. Variation of tensile force and deformation in AC overlay with a number of simulated thermal load cycles are observed and cumulative decay of parameters, viz. tensile force, stiffness, and shear modulus, are computed. Overlay life, decay parameters, base isolation, and fabric effectiveness factors (FEF) are also evaluated. It is found that the unreinforced OGAC overlay performed better than that of DBM as a crack relief layer. In purely opening mode of displacement the best performance shown by the geotextile reinforced OGAC overlay becomes worse under mixed mode of displacement.
 
Publisher AMER SOC TESTING MATERIALS
 
Date 2011-07-17T08:09:53Z
2011-12-26T12:50:12Z
2011-12-27T05:36:18Z
2011-07-17T08:09:53Z
2011-12-26T12:50:12Z
2011-12-27T05:36:18Z
2007
 
Type Article
 
Identifier JOURNAL OF TESTING AND EVALUATION, 35(6), 589-601
0090-3973
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4668
http://hdl.handle.net/10054/4668
 
Language en