Effects of granulated waste glass and micro steel fiber on shear strength parameters of sand

Abstract

During the construction of the various structures, soil strength plays a vital role in structural performance. Hence, soil improvement techniques are needed to improve soil strength as well. This study aimed to improve shear strength of sandy soil using Granulated waste glass (GWG) and Micro steel fiber (MSF). In order to apply this idea, there have been taken two kinds of sandy soil such as fine sand (locally available in Kushtia) and coarse sand (locally available in Domar). As for basic properties of sand, fineness modulus, specific gravity, maximum dry density, etc. are determined from experimental results. After grounding the waste glasses into granulated form and cutting the 0.70 mm steel wire into a uniform size of 10 mm in length, the GWG and MSF have been mixed in the sand by various proportions namely 5%, 10% and 15% by weight. The observation on the soil improvement technique which is adopted in this paper is summarized that the cohesion of the Kushtia sand is increased up to 1376.7% for 10% MSF and angle of internal friction is increased up to 8.7% for 10% GWG. The cohesion of the Domar sand is increased up to 1877.5% for 10% MSF and angle of internal friction is increased up to 24.4% for 15% MSF. Therefore, it can be concluded that the shear strength becomes increase for both sand up to optimum content using the considered percentage of GWG and/or MSF.