An experimental study of the anti-cracking characteristics of foreign-clay based on rock slope

SONG Jinglei; HE Wei; HAO Shefeng; JIANG Bo; LIU Jin; BU Fan; SONG Zezhuo

doi:10.16030/j.cnki.issn.1000-3665.202008025

2021 Vol. 48, No. 3

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SONG Jinglei, HE Wei, HAO Shefeng, JIANG Bo, LIU Jin, BU Fan, SONG Zezhuo. An experimental study of the anti-cracking characteristics of foreign-clay based on rock slope[J]. Hydrogeology & Engineering Geology, 2021, 48(3): 144-149. doi: 10.16030/j.cnki.issn.1000-3665.202008025

Citation:

SONG Jinglei, HE Wei, HAO Shefeng, JIANG Bo, LIU Jin, BU Fan, SONG Zezhuo. An experimental study of the anti-cracking characteristics of foreign-clay based on rock slope[J]. Hydrogeology & Engineering Geology, 2021, 48(3): 144-149. doi: 10.16030/j.cnki.issn.1000-3665.202008025

An experimental study of the anti-cracking characteristics of foreign-clay based on rock slope

1.
Geological Survey of Jiangsu Province, Nanjing, Jiangsu　210018, China
2.
Technology Innovation Center for Ecological Monitoring & Restoration Project on Land (Arable), Ministry of Natural Resources, Nanjing, Jiangsu　210018, China
3.
School of Earth Sciences and Engineering, Hohai University, Nanjing, Jiangsu　211100, China

More Information

Corresponding author: LIU Jin, jinliu920@163.com

Received Date: 11 August 2020

Revised Date: 27 September 2020

Publish Date: 15 May 2021

Abstract

Abstract

Foreign-clay spraying is currently a common technology for ecological restoration of exposed rock slopes. However, under arid climate conditions, the large amount of internal water loss of the foreign-clay on the slope surface will easily cause shrinkage and cracking, which will affect the overall stability of the slope and the growth of surface vegetation. In this paper, aiming at the problem of cracking of the foreign-clay on the slope surface, by changing the thickness of the soil, polymer composite foreign-clay with different polyurethane (PU) concentrations is prepared to analyze the development characteristics of cracks through a series of indoor drying tests. In addition, particles (Pores) and cracks analysis system (PCAS) are used to conduct a quantitative analysis of the geometry of crack network, so as to further explore the influence of soil thickness and polymer additive concentration on fracture development.
- rock slope /
- foreign-clay /
- clay thickness /
- polymer materials /
- crack development characteristics

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References

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