Experimental Investigation of Stochastic Mechanical Behavior of Cement Emulsified Asphalt Mortar under Monotonic Compression

Xiao Li,Peng Liu,Zhi Shan,Zilong Meng,Zhiwu Yu

doi:10.3390/app10082860

Abstract

Experimental investigation on cement emulsified asphalt mortar (CA mortar) under uniaxial monotonic compression by taking into account the stochastic properties were investigated. An analytical constitutive model based on the statistic damage approach capable of mimicking the stochastic mechanical responses of CA mortar under uniaxial compression was proposed. The comparison between the experimental results and the predictions demonstrated that the proposed model was able to characterize the salient features for CA mortar under uniaxial monotonic compression. Furthermore, the compressive stochastic evolution (SE) of CA mortar tested in this work and comparative analyses among typical China Railway Track System-I (CRTS-I) type CA mortar and concrete in several aspects were examined and performed; it was revealed that the Lognormal distribution density function can well represent the damage probability density for CA mortar, and its stochastic constitutive relationship can be reflected by a media process of transition from microscale to macroscale.

Highlights

Cement and emulsified asphalt mortar (CA mortar) is an inorganic–organic composite material, which mainly consists of cement, emulsified asphalt, sand, and admixtures and is considered as a key material used in the construction of high-speed railway and road pavement [1,2,3,4,5,6]
In order to have a clear understanding of the mechanical properties of CA Mortar and relative failure mechanism during this test, it is necessary to study the failure modes of specimens
In In this work, thethe compressive behaviors of of mortar under uniaxial monotonic loading were this work, compressive behaviors mortar under uniaxial monotonic loading were experimentally investigated byby taking into account thethe stochastic properties

Summary

Introduction

Cement and emulsified asphalt mortar (CA mortar) is an inorganic–organic composite material, which mainly consists of cement, emulsified asphalt, sand, and admixtures and is considered as a key material used in the construction of high-speed railway and road pavement [1,2,3,4,5,6]. Three major categories can be identified in present research topics referring to CA mortar: (a) physical and chemical properties of fresh CA mortar [9,10,11,12,13,14,15,16,17,18,19], which mainly incorporate the properties of rheology, water absorption and expansibility, seepage, and expansibility; (b) mechanical properties of hardened.

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