Characteristics of Cyclic Shear Behavior of Sandy Soils: A Laboratory Study

Abstract

This paper presents a laboratory study of the influence of relative density on the liquefaction potential of a sandy soil using the triaxial apparatus. The study is based on undrained triaxial tests performed on samples at an initial relative density RD = 15, 50 and 65 % under a confining pressure of 100 kPa using a dry deposition method. Samples were subjected to quasi-static undrained cyclic tests. The paper is composed of three parts. In the first part the used materials and their characteristics are presented. The second part is devoted to the experimental procedures and the device used. The third part investigates the influence of relative density on the liquefaction potential of the three sands (Hostun Rf, Chlef and Rass). This study also explores the influence of particle size on the liquefaction potential. The test results indicate that consistent results were obtained and show clearly that increasing the relative density leads to an important improvement in the liquefaction resistance of sand. This effect is very pronounced when the initial relative density increases from 50 to 65 %.

Liquefaction potential along with pore water pressure generation of coastal sand of Digha in West Bengal, India

“…Similar findings have been found by other researchers also (Krim et al, 2016;Salem et al, 2013;Rao and Ramana, 2010).…”

“…Out of these parameters most important are: relative density i.e. soil characteristic (Seed and Lee, 1966;Lin et al, 2004;Finn et al, 1971;Hyodo et al, 1998;Rao and Ramana, 2010;Sandoval and Pando, 2012;Salem et al, 2013;Krim et al, 2016;Akhila et al, 2019); effective confining pressure i.e. geological criteria (Castro and Poulos, 1977;Yunoki et al, 1982;Salem et al, 2013;Finn et al, 1971;Peacock and Seed, 1968;Seed and Lee, 1966;Hyodo et al, 1998;Rao and Ramana, 2010) and frequency of loading of earthquake i.e.…”

A parametric study on cyclic strength of coastal sand of Digha in West Bengal, India

“…For better understanding the effects of effective confining pressure and density on liquefaction potential of Digha sand, a series of cyclic triaxial tests have been performed to determine cyclic stress ratio which causes initial liquefaction (development of excess pore water pressure ratio, r u = 1) at 15 number of loading cycles [20] and the observed cyclic stress ratio value can be presented as cyclic strength of soil. In this regard the effect of density and effective confining pressure on cyclic strength of sand (represented in terms of CSR) has been illustrated in Fig.…”

“…The effect of frequency on cyclic strength of soil (seismic criteria) has been investigated by Rao and Ramana [33], Townsend [47]. How the relative density (soil characteristic) affect the liquefaction potential has been shown by the research works of Seed and Lee [37], Lin et al [26], Finn et al [11], Hyodo et al [12], Sandoval and Pando [35], Salem et al [34], Krim et al [20] and Rao and Ramana [33]. The effect of effective confining pressure (geological criteria) on soil liquefaction has been studied and analyzed by Castro and Poulos [4], Yunoki et al [50], Salem et al [34], Finn et al [11], Peacock and Seed [30], Seed and Lee [37], Hyodo et al [12] and Rao and Ramana [33].…”

A Laboratory Investigation on Shear Strength Behavior of Sandy Soil: Effect of Glass Fiber and Clinker Residue Content

“…The depth of extraction varied between 4.0-8.0 m. One was medium sand consisting of rounded particles named Chlef sand, while the other was fine sand with rounded particles named Rass sand. Numerous tests were carried out on this sand [5], [8], [17], [27]. Chlef sand, as the name suggests, comes from the Oued Chlef which crosses the city of Chlef (North Algeria).…”