The influence of compaction energy on frost-heave characteristics of coarse-grained soil

Fengyun Liu (), Zhushan Shao (), Rujia Qiao (), Shuocheng Zhang () and Wen-Chieh Cheng ()
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Fengyun Liu: Xi’an University of Architecture and Technology
Zhushan Shao: Xi’an University of Architecture and Technology
Rujia Qiao: Xi’an University of Architecture and Technology
Shuocheng Zhang: Xi’an University of Architecture and Technology
Wen-Chieh Cheng: Xi’an University of Architecture and Technology

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2020, vol. 100, issue 2, No 21, 897-908

Abstract: Abstract Compactness is an important parameter to guarantee the subgrade stability, which is dramatically affected by temperature, especially in cold region. In this paper, the effect of compaction energy was considered in frozen stage under closed system. Frost-heave tests with different fines contents and moisture contents with non-water supply under different compaction energy conditions were carried out to find out the relationship between compaction energy and frost-heave ratio. Results showed that frost-heave ratio reached its maximum in the standard compaction energy test, minimum in the insufficient compaction energy test, and median in the over compaction energy tests. Surprisingly, frost-heave ratio first increased with the increase in fines content and then decreased with the increase in fines content. The water weight of absorption per unit area was also set up to explain it. It is an interesting discovery.

Keywords: Cold regions; Coarse-grained soil; Frost-heave; Compaction energy (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1007/s11069-019-03827-6

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