长江科学院院报2017，Vol.34Issue(3)：63-66,4.DOI:10.11988/ckyyb.20151088
干湿循环作用下石膏岩劣化效应的试验研究
Laboratory Study on Degradation of Gypsum Rockwith Dry-Wet Cycles
摘要
Abstract
Test data of water absorption rate, porosity and uniaxial compression of the gypsum rocks from Shiziya tunnel in Badong were obtained through 0, 1, 3, 6, 12 cycles of drying and wetting test.Results showed that the water absorption rate and porosity of gypsum rock were in logarithmic function relationship with the wet-dry cycles.With the increase of wet-dry cycle, water absorption rate and porosity both increased;but the increment alleviated.Meanwhile, the uniaxial compressive strength and elastic modulus both reduced with the number of wet-dry cycles;and the reduction decreased gradually.Furthermore, dry-wet cycles had biggest degradation effect on water absorption rate, followed by elastic modulus, uniaxial compressive strength, and porosity.关键词
石膏岩/干湿循环/吸水率/孔隙度/单轴压缩试验/劣化效应Key words
gypsum rock/dry-wet cycle/water absorption rate/porosity/uniaxial compression test/degradation effect分类
建筑与水利引用本文复制引用
李亚,余宏明,李科,李雄峰..干湿循环作用下石膏岩劣化效应的试验研究[J].长江科学院院报,2017,34(3):63-66,4.基金项目
国家自然科学基金项目(41272377) （41272377）
