湿陷性黄土模型试验相似材料的研制

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Abstract The model test material of collapsible loess is the bottleneck of similar materials model research in geomechanics，which has limited the application of model tests in loess area. A model test material for collapsible loess is successfully developed after a lot of compounding tests by airfall method. This similar material is firstly mixed with barite powder and sand as non-cohesive material，and industrial salt，gypsum and bentonite as cohesive material. Then the material is mixed with water evenly. After wetted for 24 hours，the samples are produced by airfall method. At last，the samples are maintained at constant temperature of 50 ℃，which simulates the deposition mode and formation conditions of eolian loess，to obtain the targeted model test material. Odometer collapse test results show that this artificial material have similar collapsibility with natural loess；and also produce significant collapse when wetted. Shear test results indicate that shear strength parameters of the similar material are much close to natural loess. Since the density of the similar material can be adjusted widely，the model test material developed by the above method would be an ideal model test material for collapsible loess.

Key words： soil mechanics collapsible loess airfall method model test similar material

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	Articles by authors
	ZHANG Yanjie1
	2
	WANG Xu1
	LIANG Qingguo1
	JIANG Daijun1
	MA Xuening 1

Cite this article:

ZHANG Yanjie1,2,WANG Xu1, et al. DEVELOPMENT OF MODEL TEST SIMILAR MATERIAL OF COLLAPSIBLE LOESS[J]. , 2013, 32(s2): 4019-4024.

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https://rockmech.whrsm.ac.cn/EN/Y2013/V32/Is2/4019

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