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DSC modelling for predicting resilient modulus of crushed rock base as a road base material for Western Australia roads

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交通运输工程学报 2013年第2期13卷 10-16页

作者： khobklang pakdee VIMONSATIT Vanissorn JITSANGIAM Peerapong NIKRAZ Hamid Department of Civil Engineering Curtin UniversityGPO Box U1987 Perth 6845Western AustraliaAustralia

In order to increase the applied efficiency of crushed rock base(CRB) in pavement structure design for Western Australia roads,the material modelling based on the experimental results was investigated,and the disturbed state concept(DSC) was used to predict the resilient modulus of CRB because of its simplicity and strong ability in capturing the elastic and inelastic responses of materials to loads.The actual deformation of DSC,at any loading state,was determined from its assumed relative intact(RI) state.The DSC equation of CRB was constructed by using a set of experimental results of resilient modulus tests,and an idealized material model,namely the linear elastic model,of relative intact(RI) part was considered.Analysis results reveal that the resilient modulus-applied stress relationships back-predicted by using the DSC modelling are consistent with the experimental results,so,the DSC equation is suited for predicting the resilient modulus of CRB specimen.However,the model and the equation coming from the test results are conducted in accordance with the Austroads standard,so further investigation and validation with respect to the field behaviours of pavement structure should be performed.

关键词： pavement engineering CRB resilient modulus DSC RI triaxial test

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DSC MODELLING FOR PREDICTING RESILIENT MODULUS OF CRUSHED ROCK BASE AS A ROAD BASE MATERIAL FOR WESTERN AUSTRALIA ROADS

DSC MODELLING FOR PREDICTING RESILIENT MODULUS OF CRUSHED RO...

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ISAP2012重载沥青路面和桥面铺装专题会议

作者： pakdee khobklang Vanissorn Vimonsatit Peerapong Jitsangiam Hamid Nikraz Curtin University

＜正＞Crush Rock Base（CRB） is a commonly used road base material for Western Australia Roads.In order to increase the efficiency of using this material in pavement structure design,material modelling for analysis which is based on experimental results needs to be investigated.This paper is a preliminary study of the use of the Disturbed State Concept（DSC） to predict the resilient modulus for CRB.DSC was adopted as the modelling approach because of its simplicity and yet is powerful in capturing the elastic and inelastic responses of materials to loading.The main

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