Effects of gradation on the mobilized friction angle for the instability and steady states of sand-silt mixtures: experimental evidence

IF 0.5 4区工程技术 Q4 ENGINEERING, GEOLOGICAL

Acta Geotechnica Slovenica Pub Date : 2019-01-01 DOI:10.18690/ACTAGEOTECHSLOV.16.1.79-95.2019

A. C. Taiba, Y. Mahmoudi, L. Hazout, W. Baille, M. Belkhatir

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引用次数: 12

Abstract

This paper deals with a laboratory study of the influence of low-plastic-fines content and grading characteristics on the instability and steady-state friction angle of sand-silt mixtures under monotonic loading conditions. For this purpose, a series of compression undrained triaxial tests were carried out on Chlef sand (Algeria) mixed with low plastic fines (Ip=5%) ranging from Fc=0% to Fc=30%. The samples were prepared in the laboratory with the dry-funnel-pluviation method and subjected to three different confining pressures (Pc’=100 kPa, 200 kPa and 300 kPa). The obtained results indicate that the fines content, void ratio and gradation have a significant influence on the mobilized friction angle for the instability and steady state of the sand-silt mixtures and confirm the existence of simple correlations between the mobilized instability Wiebke Baille Bochum Ruhr University, Laboratory of Foundation Engineering, Soil and Rock Mechanics Bochum, Germany Mostefa Belkhatir University of Chlef, Laboratory of Material Sciences & Environment Algeria

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级配对砂粉混合物失稳和稳态动员摩擦角的影响:实验证据

本文对单调加载条件下低塑性细粒含量和级配特性对砂粉混合体失稳和稳态摩擦角的影响进行了室内试验研究。为此，在Chlef砂(阿尔及利亚)上进行了一系列压缩不排水三轴试验，掺入低塑性细粒(Ip=5%)， Fc=0%至Fc=30%。在实验室采用干式漏斗法制备样品，并在3种不同围压(Pc′=100 kPa、200 kPa和300 kPa)下进行试验。结果表明，细粒含量、孔隙比和级配对砂粉混合体失稳和稳态的动摩角有显著影响，证实了动摩角之间存在简单的相关性

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta Geotechnica Slovenica 地学-工程：地质

CiteScore

1.20

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： ACTA GEOTECHNICA SLOVENICA aims to play an important role in publishing high-quality, theoretical papers from important and emerging areas that will have a lasting impact on fundamental and practical aspects of geomechanics and geotechnical engineering. ACTA GEOTECHNICA SLOVENICA publishes papers from the following areas: soil and rock mechanics, engineering geology, environmental geotechnics, geosynthetic, geotechnical structures, numerical and analytical methods, computer modelling, optimization of geotechnical structures, field and laboratory testing. The journal is published twice a year.