Collapse Behavior and Microstructural Change of Loess under Different Wetting-Drying Cycles

Densely compacted loess on which many man-made infrastructures are built are often exposed to strong weathering processes such as repeated wetting-drying (WD) cycles. In this paper, explore the relationship between collapsibility and wetting-drying cycles. all the samples were characterized by the X...

Full description

Saved in:
Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2020-11, Vol.598 (1), p.12036
Main Authors: Yuan, Kang-ze, Ni, Wan-kui, Lü, Xiang-fei
Format: Article
Language:English
Subjects:
Collapsibility
Drying
Loess
Microstructure of Loess
Photomicrographs
Pore size
Wetting
Wetting-Drying Cycles
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Densely compacted loess on which many man-made infrastructures are built are often exposed to strong weathering processes such as repeated wetting-drying (WD) cycles. In this paper, explore the relationship between collapsibility and wetting-drying cycles. all the samples were characterized by the XRD, surface micrographs, MIP and Collapsibility analysis. The results illustrated that the dominant inter-aggregate pore size and its peak intensity decrease as the specimens were increasing from 1 WD Cycle to 4WD Cycles, while intra-aggregate pores remained almost unchanged. Therefore, we finally get the wetting-drying cycles with a small number of times, the collapsibility coefficient will decrease. And the size of the particles and pore play an important role in collapsibility.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/598/1/012036