Damage and deterioration characteristics of red mudstone 
under water vapor cycles

YU Tian-you; JIANG Guan-lu; RAO Qian-zhu; ZHU Dan; CHEN Hong-yu; LIU Xian-feng

doi:10.16285/j.rsm.2024.0352

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Damage and deterioration characteristics of red mudstone under water vapor cycles

更新时间：2026-06-25

- Damage and deterioration characteristics of red mudstone under water vapor cycles
- Vol. 46, Issue 2, Pages: 479-491(2025)
- 作者机构：
  
  1. l. 西南交通大学土木工程学院,四川,成都,610031
  2. 西南交通大学高速铁路线路工程教育部重点工程实验室,四川,成都,610031
  3. 新疆工程学院土木工程学院,新疆,乌鲁木齐,830023
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2024.0352
  CLC： TU457
- Online First：11 February 2025，
  
  Published：2025
- 稿件说明：
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YU Tian-you, JIANG Guan-lu, RAO Qian-zhu, et al. Damage and deterioration characteristics of red mudstone under water vapor cycles[J]. 2025, 46(2): 479-491.
DOI：

YU Tian-you, JIANG Guan-lu, RAO Qian-zhu, et al. Damage and deterioration characteristics of red mudstone under water vapor cycles[J]. 2025, 46(2): 479-491. DOI： 10.16285/j.rsm.2024.0352.

摘要

为研究水汽循环作用下红层泥岩的强度、变形及损伤的演化规律，对红层泥岩开展了水汽循环试验。通过单轴压缩试验、巴西劈裂试验以及声发射与三维数字图像相关（three-dimensional digital image correlation，简称DIC-3D）技术，研究了不同水汽循环次数下红层泥岩强度、变形及损伤特性的演化规律。研究结果表明：随着水汽循环次数的增加，泥岩含水率和体积将产生不可逆累积，泥岩的水汽平衡时间延长；水汽循环作用将导致泥岩抗压强度、抗拉强度、弹性模量和剪切模量的衰减，由此提出了红层泥岩的指数型劣化模型；在经历不同水汽循环次数后的单轴加载过程中，泥岩的破裂形态随循环次数的增加由整体剪切破坏逐步发展为局部弥散裂纹发展破坏的模式，演化规律的特征表现为裂隙闭合点推迟、起裂应力和损伤应力点提前、岩石的压密过程延长、线弹性变形阶段缩短以及岩石抵抗变形的能力降低。

Abstract

A series of water vapor cycle experiments was conducted to examine the evolution of strength

deformation

and damage characteristics of red mudstone. The experiments included uniaxial compression tests and Brazilian splitting tests

utilizing acoustic emission (AE) and three-dimensional digital image correlation (DIC-3D) technology. The study concentrated on the evolutions in strength

deformation

and damage characteristics of red mudstone following different water vapor cycles. Results indicated that as water vapor cycles increased

the water content and volume of the mudstone showed irreversible accumulation

and the time required to reach water vapor equilibrium extended. Water vapor cycles caused reductions in compressive strength

tensile strength

elastic modulus

and shear modulus of the mudstone

leading to the proposal of an exponential degradation model for red mudstone. During uniaxial loading after different water vapor cycles

the failure mode of mudstone transitioned from overall shear failure to localized development of dispersed cracks. The evolution characteristics included delayed closure points of fractures

earlier onset of initial and damage stresses

extended compaction processes

shortened linear elastic deformation stages

and reduced ability of the rock to resist deformation.

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