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Behaviour of asphalt pavements under repeated tensile strains



Title: Behaviour of asphalt pavements under repeated tensile strains
Author(s): A. Shalaby, A.O. Abd el Halim, S.M. Easa
Paper category : conference
Book title: Fourth International RILEM Conference on Reflective Cracking in Pavements - Research in Practice
Editor(s): A. O. Abd El Halim, D. A. Taylor
and El H. H. Mohamed
Print-ISBN: 2-912143-14-4
e-ISBN: 2351580265
Publisher: RILEM Publications SARL
Publication year: 2000
Pages: 185 - 194
Total Pages: 10
Nb references: 11
Language: English


Abstract: 
Transverse reflective cracking is a prevailing pavement distress in Canada. Combinations of low traffic loads and severe climatic conditions often lead to a form of premature failure manifested by reflective cracking. Pavements subjected to low temperatures experience repeated tensile strains caused by thermal cycling. Under this research, asphalt pavement specimens are tested under repeated tensile stresses applied at controlled laboratory conditions. The purpose of the test is to develop a ranking method for analysing the mix behaviour under repeated loading. The testing involved actuated loading at constant displacement performed at two temperature levels 0C and -20C. A damage approach is adopted and the mix behaviour and damage evolution indices are evaluated. Using force displacement measurements, damage indices under repeated loading are determined as a ratio of mix response after cycling to the response of the same sample during the initial loading cycle. The approach is applied to two mixes and a different and distinctive response is obtained. The testing protocol is applied to study the effects of low cycle fatigue caused by thermal cycling.


Online publication: 2009-12-23
Publication type : full_text
Public price (Euros): 0.00