文献类型：期刊文献

英文题名：Mechanical response and failure analysis of similar materials considering moisture conditions and pore structure

作者：Wang, Yuliang Shang, Yuqi Kong, Dezhong He, Lu

第一作者：Wang, Yuliang

通信作者：Shang, YQ[1];Kong, DZ[2]

机构：[1]China Univ Min & Technol Beijing, Sch Energy & Min Engn, Beijing 100083, Peoples R China;[2]Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China;[3]Guizhou Univ, Coll Min, Guiyang 550025, Peoples R China;[4]Guizhou Inst Technol, Sch Min Engn, Guiyang 550003, Peoples R China

第一机构：China Univ Min & Technol Beijing, Sch Energy & Min Engn, Beijing 100083, Peoples R China

通信机构：corresponding author), Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China;corresponding author), Guizhou Univ, Coll Min, Guiyang 550025, Peoples R China.

年份：2025

卷号：491

外文期刊名：CONSTRUCTION AND BUILDING MATERIALS

收录：;EI(收录号：20252918819683);Scopus(收录号：2-s2.0-105010860081);WOS:【SCI-EXPANDED(收录号:WOS:001543331600002)】；

基金：Qiankehe Platform Talents, Grant/Award Number: (GCC [2023] 056) . Guizhou Provincial Department of Education 2023 Annual College Science and Technology Innovation Team (Guizhou Education Technology [2023] 055) . National Natural Science Foundation of China (No. 52164002, No. 52164005) . Guizhou Provincial Basic Research Program (Natural Science) (Qianke He Foundation-ZK [2024] Key 022) . Guizhou Provincial Science and Technology Department Innovation Talent Team Construction Project (Qiankehe talent CXTD [2025] 025)

语种：英文

外文关键词：Similar materials; Water ratio; Porosity; Saturation; Strength evolution; Failure mechanism; Solid-fluid coupling

摘要：The mechanical properties and failure behavior of analogous modeling materials critically influence the outcomes of physical model tests, which are significantly governed by pore structure and moisture conditions. In this study, a series of uniaxial compression tests and numerical simulations were conducted on artificially prepared analogous material specimens to systematically investigate the effects of Water ratio, Porosity, and Saturation on strength evolution and failure mechanisms. The results indicate that the Water ratio predominantly induces a nonlinear reduction in strength by softening particle interfaces and promoting crack propagation. As the Water ratio increased from 0 % to 17.9 %, the compressive strength decreased from 5.6 MPa to 1.6 MPa, with the Strength degradation rate (Ds) reaching 71.4 %. Porosity exhibited a strong negative correlation with uniaxial compressive strength due to the weakening of load-bearing structures and the initiation of microcracks. When Porosity increased from 0 % to 7.12 %, compressive strength reduced to 2.4 MPa, and Ds increased to 57.1 %. In contrast, the effect of Saturation on material strength exhibits a non-monotonic behavior, showing a dual impact of "enhancement-degradation". As Saturation rose from 0 % to 88 %, compressive strength increased from 1.9 MPa to 4.1 MPa, followed by a slight decrease to 3.7 MPa at full saturation (100%). Furthermore, numerical simulations closely matched the experimental results in terms of strength trends, revealing the coupled evolution of microcrack propagation and strength degradation. These findings provide theoretical guidance for material design, moisture regulation, and structural safety assessments in analogous modeling tests under hydro-mechanical coupling conditions, with potential applications in tunnel engineering, karst geology, water-related hazards, and slope stability projects.