Mechanical behavior of sandy soil reinforced with naturals and synthetics fibers: A laboratory study
DOI:
https://doi.org/10.7764/RDLC.25.1.50Keywords:
Sand, shear strength, fibers content, relative density, mechanical behavior, sand–fiber mixture.Abstract
This paper presents a laboratory study of the effect of naturals (hemp fibers) and synthetics fibers (glass fibers) on the mechanical behavior of sandy soil (natural Chlef sand). A series of shear direct tests were carried out on medium dense (RD= 50%) and dense (RD= 80%) Chlef samples sand with different naturals and synthetics content fibers ranging from 0, 0.25, 0.5, 0.75 and 1% and under three normal stress of 50, 100 and 200 kPa. The test results show that the addition of fibers has a significant effect on the shear strength of the sand-fiber mixture, however, this shear strength increases with the increase of the fibers content, the normal stress applied and the relative density until up an optimal fibers content of 0.5% for the glass fibers and 0.75% for the hemp fibres. Beyond these optimal fibres content, the shear strength decreases. The internal friction angle and the cohesion are significantly influenced by the fibres content.
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Copyright (c) 2026 Abdelkader Brahimi, Abdallah Krim, Djamel Eddine Bouri , Benali Nougar, Basma Lamouchi , Ahmed Arab
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