Meso-cracking behavior of cement-stabilized macadam materials based on heterogeneous model

被引：0

作者：

Zhao X.-K. ^{[1
]}

Hu Z. ^{[1
]}

Niu Z.-X. ^{[1
]}

Zhang J.-P. ^{[1
]}

Pei J.-Z. ^{[1
]}

Wen Y. ^{[1
]}

机构：

[1] School of Highway, Chang'an University, Xi'an

来源：

Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2024年 / 54卷 / 05期

关键词：

cement-stabilized macadam; discrete element method; mesoscopic heterogeneity; road engineering; semicircle bending test;

D O I：

10.13229/j.cnki.jdxbgxb.20221156

中图分类号：

学科分类号：

摘要：

The purpose is to investigate the mesoscopic cracking behavior of heterogeneous cement-stabilized macadam（CSM）materials using the discrete element method（DEM）. According to Weibull distribution material random field，the heterogeneous fracture models with different homogenization levels were established. The virtual semicircular bending（SCB）tests were carried out to simulate the mesoscopic cracking process. The influence of mortar heterogeneity on mesoscopic cracking behavior of CSM was further studied. The results show that the CSM cracks tend to propagate along the weak mortar and the interfacial transition zone，and the fracture of mortar matrix was dominant. The peak strength and failure deformation of CSM material increase with the increase of mortar homogeneity. A small amount of weak mortar matrix is beneficial to improve the structure deformation characteristics and enhance its overall strength. The optimum crack resistance of CSM materials can be obtained by maintaining reasonable homogenization levels of mortar matrix. © 2024 Editorial Board of Jilin University. All rights reserved.

引用

页码：1258 / 1266

页数：8

共 13 条

[1]

Chen X Q, Yuan J W, Dong Q, Et al., Meso-scale cracking behavior of cement treated base material, Construction and Building Materials, 239, (2020)

[2]

Zhang Yang, Wang Ao-peng, Zhang Jing-lin, Et al., Dry shrinkage in cement-stabilized macadam: a review, Journal of Jilin University (Engineering and Technology Edition), 53, 2, pp. 297-311, (2023)

[3]

Zhao Xiao-kang, Dong Qiao, Chen Xue-qin, Et al., Mesoscale cracking of cement-treated composites with initial defects, China Journal of Highway and Transport, 33, 10, pp. 230-239, (2020)

[4]

Dong Q, Zhao X K, Chen X Q, Et al., Long-term mechanical properties of in situ semi-rigid base materials, Road Materials and Pavement Design, 22, 7, pp. 1692-1707, (2021)

[5]

Zhou Zheng-feng, Kang Yu-feng, Luo Jun-hao, Et al., Mesoscale fracture analysis on concrete based on cohesive zone model, Journal of Southeast University (Natural Science Edition), 51, 2, pp. 270-277, (2021)

[6]

Peng Yong, Zhang Xiu-fang, Guo Ze-yu, Et al., Influence of aggregate contact characteristics on shear fatigue life of asphalt mixtures using discrete element method, Journal of Jilin University (Engineering and Technology Edition), 53, 1, pp. 178-187, (2023)

[7]

Zhang L F, Xie H, Feng J L., Mesoscale modeling and failure mechanism of concrete considering pore structures and actual aggregate shapes, Construction and Building Materials, 353, (2022)

[8]

Shen Z H, Huang D R, Wang G, Et al., A mesoscale bond model for discrete element modeling of irregular cemented granular materials, Computers and Geo-technics, 152, (2022)

[9]

Li Jue, Zhang An-shun, Zhang Jun-hui, Et al., Model testing and numerical analysis of dynamic response of graded crushed rock base structure, Journal of Jilin University (Engineering and Technology Edition), 53, 6, pp. 1782-1789, (2023)

[10]

Su X T, Yang Z J, Liu G H., Monte Carlo simulation of complex cohesive fracture in random heterogeneous quasi-brittle materials: a 3D study, International Journal of Solids and Structures, 47, 17, pp. 2336-2345, (2010)

← 1 2 →