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DOI	10.1007/s10706-024-02807-3
	Coupled Influence of Compaction and Moisture on Unsaturated Soil Response in Triaxial Tests
	Ahmed, Ibrar; Shah, Syed Kamran Hussain; Ahmad, Tufail; Ali, Umair; Malik, Adnan Anwar; Ahmad, Naveed
发表日期	2024
ISSN	0960-3182
EISSN	1573-1529
英文摘要	Unsaturated soils are the major component of both natural and artificial earth structures, and they exhibit less predictable behavior than saturated soils. Presently, the world is experiencing pronounced impacts from climate change. Sudden heavy rainfalls and droughts both result in fluctuating soil moisture levels, meaning that soil responds differently to infrastructure loads. Accordingly, a better understanding is needed of failure causes in unsaturated soils. This research was conducted to investigate the coupled behavior of unsaturated soil with varying degrees of compaction and moisture change. Samples were prepared at 81% and 88% degrees of compaction with moisture content ranging from 10 to 25% on both sides of optimum moisture content for silty soil. Different parameters such as suction, porewater pressure, and deformation were carefully measured at every stage of the triaxial test, from sample placing to the shearing phase. The results show that there is more compressive soil behavior when there is a lower degree of compaction, i.e., 81%, along with moisture content of 15-25%. Where there is a higher degree of compaction at 88%, dilative behavior is more evident, which changes to compressive behavior as the moisture content increases. Any change in moisture content (increase or decrease) during the lifecycle of any earthen structure necessitates a long time to stabilize its suction value (decrease or increase) if it compacted to a degree that still exhibits a compressive response. This slow recovery of suction, specifically from the wetting to the drying cycle, is not favorable for soil stability upon loading.
英文关键词	Unsaturated soil; Matric suction; Axis translation; Degree of compaction; Volume change; Triaxial stress state
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Geological
WOS记录号	WOS:001218762000001
来源期刊	GEOTECHNICAL AND GEOLOGICAL ENGINEERING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299822
作者单位	National University of Sciences & Technology - Pakistan; Saitama University; King Fahd University of Petroleum & Minerals; King Fahd University of Petroleum & Minerals; University of Newcastle; University of Engineering & Technology Taxila
推荐引用方式 GB/T 7714	Ahmed, Ibrar,Shah, Syed Kamran Hussain,Ahmad, Tufail,et al. Coupled Influence of Compaction and Moisture on Unsaturated Soil Response in Triaxial Tests[J],2024.
APA	Ahmed, Ibrar,Shah, Syed Kamran Hussain,Ahmad, Tufail,Ali, Umair,Malik, Adnan Anwar,&Ahmad, Naveed.(2024).Coupled Influence of Compaction and Moisture on Unsaturated Soil Response in Triaxial Tests.GEOTECHNICAL AND GEOLOGICAL ENGINEERING.
MLA	Ahmed, Ibrar,et al."Coupled Influence of Compaction and Moisture on Unsaturated Soil Response in Triaxial Tests".GEOTECHNICAL AND GEOLOGICAL ENGINEERING (2024).