Evaluation of Shear Strength at Interface Between Geotextile and Cementitious Binder Materials

Dong-Geon Son; Yong-Hoon Byun

doi:10.5389/KSAE.2022.64.1.091

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Evaluation of Shear Strength at Interface Between Geotextile and Cementitious Binder Materials 시멘트계 결합재가 적용된 지오텍스타일의 접촉면 전단강도 평가

2022. pp. 91-98

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Abstract

Multi-layered geotextile tubes may have problems on its stability when used as cofferdam. This study presents the shear strength characteristics at the interface between geotextiles and a cementitious binder material to improve the stability of the multi-layered geotextile tubes. In this study, two different types of geotextiles are used. After mixing with a rapid setting cement, fly ash, sand, accelerator, and water, the cementitious binder material is prepared at the interface between two geotextile samples and cured under water for a desired period. The specimen is placed on upper and lower direct shear boxes by using clamping systems. A series of direct shear tests for two different geotextiles are performed along the curing time under three vertical stresses. Experimental results show that the shear strength at the interface between the cementitious binder material and geotextiles is greater than that at the interface between two geotextiles. For two types of geotextiles, apparent cohesion occurs at the interface between the cementitious binder material and geotextiles. In addition, the friction angles for any curing time are improved, compared to the interface between two geotextiles. The cementitious binder material suggested for the interface between two geotextiles may be useful for the reinforcement of multi-layered geotextile tubes.

Keywords

Cementitious binder

geotextile

interface friction

shear strength

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Information

Publisher :The Korean Society of Agricultural Engineers
Publisher(Ko) :한국농공학회
Journal Title :Journal of Korean Society of Agricultural Engineers
Journal Title(Ko) :한국농공학회논문집
Volume : 64
No :1
Pages :91-98
Received Date : 2021-10-13
Revised Date : 2021-11-10
Accepted Date : 2021-11-22
DOI :https://doi.org/10.5389/KSAE.2022.64.1.091

Journal of Korean Society of Agricultural Engineers ISSN:1738-3692(Print) 2093-7709(Online) 한국농공학회논문집

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