Model Test of Salt-frost Heaving Limit Depth of Coarse-grained Sulphate Saline Soil

doi:10.15961/j.jsuese.201800098

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	Model Test of Salt-frost Heaving Limit Depth of Coarse-grained Sulphate Saline Soil
	Yang, Peng 1,2; Cao, Yapeng 3,4; Zhu, Yanpeng 2; Wang, Buxiang 5
刊名	Gongcheng Kexue Yu Jishu/Advanced Engineering Science
	2019-01-20
卷号	51 期号:1 页码:129-136
关键词	Sulfur compounds Coarse-grained Frost-heaving force Hierarchical synthesis Limit depth Mathematical expressions Provide guidances Quantitative evaluation Sulphate saline soil
ISSN号	20963246
DOI	10.15961/j.jsuese.201800098
英文摘要	In order to perfect the salt expansion theory of coarse-grained saline soil and explore the influencing factors and mechanism of the salt-frost heaving force, 96 groups of coarse-grained sulphate saline soil samples are prepared artificially then indoor model tests have been carried out by self-designed test device. Test results showed that the sensitive range of temperature on the salt-frost heaving force is -0.2~-1.0. The salt content had no influence on the rules that the salt-frost heaving force increasing with temperature and determines the maximum salt-frost heaving force together with water content. For samples with same void ratio, the increasing water content led to an increased amount of the salinity which resulted in the maximum salt-frost heaving force. When the salt content kept constant, however, the increase of water content caused the decrease of maximum salt-frost heaving force. The maximum salt-frost heaving force achieved the maximum and minimum values when the void ratio was 0.58 and 0.55, respectively, which was related to the crystallization position of salt in the soil frame. Furthermore, based on the test results, a mathematical expression of frost heaving limit depth of coarse-grained sulphate saline soil is given by the hierarchical synthesis method, which is expected to provide guidance for the quantitative evaluation and design of salt-frost heaving deformation of coarse-grained sulphate saline soil. © 2019, Editorial Department of Advanced Engineering Sciences. All right reserved.
语种	中文
出版者	Editorial Department of Journal of Sichuan University
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114968]
专题	兰州理工大学
作者单位	1.School of Civil Eng., Lanzhou Petrochemical Polytechnic, Lanzhou; 730060, China; 2.School of Civil Eng., Lanzhou Univ. of Technol., Lanzhou; 730050, China; 3.State Key Lab. of Frozen Soil Eng., Northwest Inst. of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou; 730000, China; 4.Univ. of Chinese Academy of Sciences, Beijing; 100049, China; 5.MCC Huatian Eng. & Technol. Corp., Nanjing; 210000, China
推荐引用方式 GB/T 7714	Yang, Peng,Cao, Yapeng,Zhu, Yanpeng,et al. Model Test of Salt-frost Heaving Limit Depth of Coarse-grained Sulphate Saline Soil[J]. Gongcheng Kexue Yu Jishu/Advanced Engineering Science,2019,51(1):129-136.
APA	Yang, Peng,Cao, Yapeng,Zhu, Yanpeng,&Wang, Buxiang.(2019).Model Test of Salt-frost Heaving Limit Depth of Coarse-grained Sulphate Saline Soil.Gongcheng Kexue Yu Jishu/Advanced Engineering Science,51(1),129-136.
MLA	Yang, Peng,et al."Model Test of Salt-frost Heaving Limit Depth of Coarse-grained Sulphate Saline Soil".Gongcheng Kexue Yu Jishu/Advanced Engineering Science 51.1(2019):129-136.