Experimental investigation on the relevance of mechanical properties and porosity of sandstone after hydrochemical erosion

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2016 > Vol13 No.11

	Experimental investigation on the relevance of mechanical properties and porosity of sandstone after hydrochemical erosion
	CAI Yan-yan; YU Jin; FU Guo-feng; LI Hong
刊名	Journal of Mountain Science
	2016-11
卷号	13 期号:11 页码:2053-2068
关键词	Chemical erosion Hydrochemistry Mechanical properties Nuclear magnetic resonance Porosity Sandstone
ISSN号	1672-6316
通讯作者	CAI Yan-yan
英文摘要	Under the effect of chemical etching, the macroscopic mechanical properties, mesoscopic structure, mineral content, and porosity of rocks undergo significant changes, which can lead to the geological disasters; thus, an understanding of changes in the microscopic and macroscopic structure of rocks after chemical etching is crucial. In this study, uniaxial mechanical tests and nuclear magnetic resonance (NMR) spectroscopy were carried out on sandstone samples that had been previously subjected to chemical erosion under different pH values. The aim was to study changes in properties and mechanical characteristics, including deformation and strength characteristics, of the rock, and microscopic pore variation characteristics, and to perform preliminary studies of the chemical corrosion mechanism. Results show that different chemical solutions have a significant influence on the uniaxial compressive strength, the axial strain corresponding to the peak axial stress, elastic modulus, etc. With the passage of time, porosity increases gradually with exposure to different chemical solutions, and exposure to chemical solutions results in large changes in the NMR T2 curve and T2 spectrum area. Sandstone exposed to different chemical solutions exhibits different corrosion mechanisms; the root cause is the change of mineral.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/17620]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2016_Vol13 No.11
推荐引用方式 GB/T 7714	CAI Yan-yan,YU Jin,FU Guo-feng,et al. Experimental investigation on the relevance of mechanical properties and porosity of sandstone after hydrochemical erosion[J]. Journal of Mountain Science,2016,13(11):2053-2068.
APA	CAI Yan-yan,YU Jin,FU Guo-feng,&LI Hong.(2016).Experimental investigation on the relevance of mechanical properties and porosity of sandstone after hydrochemical erosion.Journal of Mountain Science,13(11),2053-2068.
MLA	CAI Yan-yan,et al."Experimental investigation on the relevance of mechanical properties and porosity of sandstone after hydrochemical erosion".Journal of Mountain Science 13.11(2016):2053-2068.