气候变化领域集成服务门户(CCPortal): Freezing-thawing behaviour of saline soil with various anti-saline measures

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DOI	10.1080/19648189.2017.1344149
	Freezing-thawing behaviour of saline soil with various anti-saline measures
	Ma Qinguo; Lai Yuanming; Zhang Mingyi
发表日期	2019
ISSN	1964-8189
EISSN	2116-7214
起始页码	1178
结束页码	1202
卷号	23 期号:10
英文摘要	In order to investigate anti-saline effect of various measures, the physical models composed of saline soil and crushed-rock layer, aeolian sand layer, impermeable geotextile and without measure were established, respectively. The test results indicate that crushed-rock layer, aeolian sand layer and impermeable geotextile can efficiently prevent moisture and salt from migrating. Moreover, they can efficiently alleviate frost heaving and salt expansion. A comprehensive measure, composed of crushed-rock layer, impermeable geotexile and aeolian sand layer, is proposed. Based on the theories of molecule motion and the phase transition, the migration mechanism and crystallisation rules of water and salt are investigated, and the amount of ice and salt crystals are calculated. Meantime, the deformation characteristic and destruction mechanism of saline soil are investigated considering the influence of the crystallisation and dissolution of ice and salt crystals, and the thermal expansion coefficient discrepancies between pore fluids and solid matrix. Finally, from the test results, it is found that salt concentration, fusion energy and ambient liquid pressure played important roles on ice pressure, and salt concentration had influence on salt crystallisation pressure. And, a computing method of ice pressure considering the influence of salt concentration, fusion energy and ambient liquid pressure, is proposed.
英文关键词	Saline soil; freezing-thawing cycle; anti-saline measure; moisture and salt changes; mechanical behaviour; frost heave; salt expansion
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Civil ; Engineering, Geological
WOS关键词	POROUS MATERIALS ; CRYSTALLIZATION PRESSURE ; CRYSTAL-GROWTH ; CONCRETE ; MODEL ; DAMAGE ; WATER ; SIZE
WOS记录号	WOS:000475617400002
来源期刊	EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239450
作者单位	[Ma Qinguo; Lai Yuanming; Zhang Mingyi] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou, Gansu, Peoples R China; [Ma Qinguo] Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China; [Lai Yuanming] Lanzhou Jiaotong Univ, Sch Civil Engn, Lanzhou, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Ma Qinguo,Lai Yuanming,Zhang Mingyi. Freezing-thawing behaviour of saline soil with various anti-saline measures[J],2019,23(10).
APA	Ma Qinguo,Lai Yuanming,&Zhang Mingyi.(2019).Freezing-thawing behaviour of saline soil with various anti-saline measures.EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,23(10).
MLA	Ma Qinguo,et al."Freezing-thawing behaviour of saline soil with various anti-saline measures".EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING 23.10(2019).