干旱区生态环境知识资源中心(Arid): Identifying Problematic Soils Using Compressibility and Suction Characteristics

Arid

DOI	10.3390/buildings14020521
	Identifying Problematic Soils Using Compressibility and Suction Characteristics
	Dafalla, Muawia; Al-Mahbashi, Ahmed M.
通讯作者	Dafalla, M
来源期刊	BUILDINGS
EISSN	2075-5309
出版年	2024
卷号	14 期号:2
英文摘要	The major problematic soils in semi-arid regions include expansive soils and collapsible soils. These two types of soils cause problems and are hazardous for buildings when moisture is introduced following a dry or semi-dry season. In order to assess the risk and damage likely to occur, a protocol of investigation needs to be considered by geotechnical engineers to quantify and assess the possible heave or collapse that may occur. The characterization and prediction of unsaturated soil behavior in semi-arid areas can now be enabled following the advancement of unsaturated soil mechanics. Heave is associated with the wetting of expansive soils, while excessive settlement or the sudden loss of support may occur when water is introduced to collapsible soils. This work calls for more than one parameter for the assessment of problematic soils to avoid misleading predictions based on a single test. This study presents an investigation of two sets of soil samples obtained from semi-arid areas in Saudi Arabia known for their collapsible or expansive nature. Tests under controlled suction and variable effective stress were conducted. The air entry values, inflection points, and residual points were established and compared for the two problematic soils. A series of oedometer tests was conducted for typical soils, and settlement and collapse were measured and assessed. The swell potential for the tested clays varied from 4% to 22%. It is possible to integrate the data from the soil-water characteristic curve (SWCC) and compressibility tests with any project specification and applied stresses to produce reliable recommendations for the construction and protection of structures in hazardous soils.
英文关键词	expansive clay collapsible soil structures cementation soil suction
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001172017700001
WOS关键词	WATER CHARACTERISTIC CURVES ; BEHAVIOR ; SWELL ; PREDICTION
WOS类目	Construction & Building Technology ; Engineering, Civil
WOS研究方向	Construction & Building Technology ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403085
推荐引用方式 GB/T 7714	Dafalla, Muawia,Al-Mahbashi, Ahmed M.. Identifying Problematic Soils Using Compressibility and Suction Characteristics[J],2024,14(2).
APA	Dafalla, Muawia,&Al-Mahbashi, Ahmed M..(2024).Identifying Problematic Soils Using Compressibility and Suction Characteristics.BUILDINGS,14(2).
MLA	Dafalla, Muawia,et al."Identifying Problematic Soils Using Compressibility and Suction Characteristics".BUILDINGS 14.2(2024).