辽宁工程技术大学学报（自然科学版）2026，Vol.45Issue(3)：284-294,11.DOI:10.11956/j.issn.1008-0562.20250507
酸性干湿循环作用下钢渣透水混凝土损伤演化规律
Damage evolution law of steel slag pervious concrete under the action of wet-dry cycles in an acidic environment
摘要
Abstract
To address the performance degradation of steel slag permeable concrete in acid rain-prone areas susceptible to under the synergistic effect of wet-dry cycles and acid corrosion,and to clarify its damage evolution mechanism,failure mode and quantitative evaluation method,this study conducted uniaxial compression-acoustic emission tests,permeability coefficient tests and acidic wet-dry cycle tests.The damage evolution process was quantitatively characterized by means of acoustic emission b-value analysis and RA-Fa correlation analysis.The results show that the degradation rates of compressive strength and elastic modulus of steel slag permeable concrete in an acidic environment(pH=4)are higher than those in a neutral environment(pH=7).The permeability coefficient in both environments exhibits a non-monotonic variation trend of first increasing,then decreasing and rising again.The failure is dominated by physical shear damage in the neutral environment,while in the acidic environment,the synergistic effect of chemical dissolution and physical degradation leads to pore loosening,resulting in tensile failure-dominated mode.After 30 wet-dry cycles,the quantitative wet-dry cycle damage variables of steel slag permeable concrete are 0.45 in the acidic environment and 0.40 in the neutral environment,respectively.This study can provide an experimental basis and quantitative data support for the durability evaluation and service life prediction of steel slag permeable concrete pavements in acid rain-prone areas.关键词
钢渣透水混凝土/酸性环境/干湿循环/单轴压缩-声发射/损伤模型Key words
steel slag pervious concrete/acidic environment/wet-dry cycles/uniaxial compression-acoustic emission/damage model分类
建筑与水利引用本文复制引用
吴迪,潘莉波,李凯,邵俊丽,董晓烨..酸性干湿循环作用下钢渣透水混凝土损伤演化规律[J].辽宁工程技术大学学报（自然科学版）,2026,45(3):284-294,11.基金项目
国家自然科学基金项目(51974147) （51974147）
辽宁省自然基金联合基金计划项目(20240314) （20240314）
辽宁省教育厅基本科研项目(LJ212510147041) （LJ212510147041）
