Microstructure and strength features of warm and ice-rich frozen soil treated with high-performance cements

doi:10.1007/s11629-018-5197-6

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-2019 > Vol16 No.6

	Microstructure and strength features of warm and ice-rich frozen soil treated with high-performance cements
	Sun Gao-chen; Zhang Jian-ming; Dang Ying-sheng; Ding Cong
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2019
卷号	16 期号:6 页码:1470-1482
关键词	Soil stabilizer Frozen soil Microstructure characteristics Macro-mechanical properties Fractal theory Scanning electron microscopy
ISSN号	1672-6316
DOI	10.1007/s11629-018-5197-6
文献子类	Article
英文摘要	Warm and ice-rich frozen soil (WIRFS) exhibits lower shear strength due to the weak binding forces between soil particles and ice crystals. To enhance the strength of WIRFS, frozen soil was treated separately with Portland, Phosphate, Sulphoaluminate, Portland-Phosphate and Portland-Sulphoaluminate cements. After the samples were cured under -1.0 degrees C for 7 days, the microscopic pore distribution characteristics and the macro-mechanical properties of WIRFS were investigated using mercury intrusion porosimetry (MIP), scanning electron microscopy (SEM) and unconfined compressive strength (UCS) tests. To quantitatively analyze the laws of pore-size transformation and the variation of Hausdorff volumetric fractal dimensions for pre-and post-treated WIRFS, the CURVEEXTRACT and Image-Pro Plus (IPP) image analysis system has been developed for analysing SEM images of the soil samples. Statistics of the pore-area dimension and pore-volume dimension were calculated. The results reveal that the cement-based treatment of WIRFS can improve the cementation fill of soil pores and the bond forces between soil particles. There is an evident correlation between the microstructure characteristics and the mechanical properties of the treated WIRFS. As the fractal dimensions of pore-area decrease, the unconfined compressive strength of cement-treated WIRFS increases significantly. In contrast, as the fractal dimensions of pore-volume increases, the unconfined compressive strength decreases remarkably.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000471607300018
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46522]
专题	Journal of Mountain Science_Journal of Mountain Science-2019_Vol16 No.6
推荐引用方式 GB/T 7714	Sun Gao-chen,Zhang Jian-ming,Dang Ying-sheng,et al. Microstructure and strength features of warm and ice-rich frozen soil treated with high-performance cements[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(6):1470-1482.
APA	Sun Gao-chen,Zhang Jian-ming,Dang Ying-sheng,&Ding Cong.(2019).Microstructure and strength features of warm and ice-rich frozen soil treated with high-performance cements.JOURNAL OF MOUNTAIN SCIENCE,16(6),1470-1482.
MLA	Sun Gao-chen,et al."Microstructure and strength features of warm and ice-rich frozen soil treated with high-performance cements".JOURNAL OF MOUNTAIN SCIENCE 16.6(2019):1470-1482.