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Bulletin of Engineering Geology and the Environment

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19.07.2021 | Original Paper

Effect of Bermuda grass root on mechanical properties of soil under dry–wet cycles

verfasst von: Qiang Ma, Nianze Wu, Henglin Xiao, Zhi Li, Wentao Li

Erschienen in: Bulletin of Engineering Geology and the Environment | Ausgabe 9/2021

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Abstract

It has been proved that Bermuda grass root is an effective material to improve the mechanical properties of soil, but the effect of the dry–wet cycles should be considered when this material is applied to the reservoir slopes. In this study, specimens with different root content were subjected to dry–wet cycles, then the unconfined compressive test was carried out to study the effect of dry–wet cyclic numbers and root content on the strength of the root-soil composites. Through the unconsolidated undrained triaxial compression test, the effect of the dry–wet cyclic numbers and root content on the shear strength parameters of the root-soil composites was investigated. The results illustrated that the mechanical properties of the root-soil composites decreased with the increase of dry–wet cyclic numbers, but increased with the increase of root content. After the root content exceeded an optimum value, the unconfined compressive strength and shear strength parameters of the root-soil composites decreased significantly. The optimum root content for achieving the maximum shear strength and unconfined compressive strength was 0.15% and 0.20%, respectively. The results in this study could provide guidance and reference for the design and construction of hydropower stations.

Vorheriger Artikel Influence of high temperatures on physical properties and microstructure of gneiss

Nächster Artikel Hydrogeological modelling to support urban planning in harbour areas: a case study from Horsens, Denmark

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Titel: Effect of Bermuda grass root on mechanical properties of soil under dry–wet cycles
verfasst von: Qiang Ma
Nianze Wu
Henglin Xiao
Zhi Li
Wentao Li
Publikationsdatum: 19.07.2021
Verlag: Springer Berlin Heidelberg
Erschienen in: Bulletin of Engineering Geology and the Environment / Ausgabe 9/2021
Print ISSN: 1435-9529
Elektronische ISSN: 1435-9537
DOI: https://doi.org/10.1007/s10064-021-02369-1

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