Enhancing the Strength of Clay-Sand Mixture by Discrete Waste Plastic Strips

Shaimaa Hasan  Fadhil; Madhat Shakir  Al-Soud; Raghad Mohammed Kudadad

doi:10.6180/jase.202106_24(3).0013

Enhancing the Strength of Clay-Sand Mixture by Discrete Waste Plastic Strips

Civil Engineering

Shaimaa Hasan Fadhil ¹ , Madhat Shakir Al-Soud¹ , and Raghad Mohammed Kudadad¹

¹Mustansiriyah University/ College of Engineering/ Civil Engineering Department

Received: September 8, 2020
Accepted: December 23, 2020
Publication Date: June 1, 2021

Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.6180/jase.202106_24(3).0013

ABSTRACT

The addition of waste plastic bottle strips to soil as a reinforcing material is widely used nowadays to enhance the engineering properties of soils. In this study, series of unconfined compression tests were conducted on clayey sand soil with and without adding strips of waste plastic bottle to investigate the effect of adding plastic strips on the shear strength of soil. Two types of plastic strips were used in this research depending on the nature of the strip surface whether plain or corrugated. Different sizes of plain strips (BxL) were used namely (1x5), (1x10), (1x15), (2x5), (2x10), (2x15), (3x5), (3x10) and (3x15) mm, while one size of corrugated strips was used namely; (1x15) mm, where B and L are the width and length of a strip, respectively. All the plastic strips are of the same thickness of 0.4mm. Both the plain and corrugated plastic strips were added with different percentage ratios of 0.25, 0.5, 0.75 and 1.0 % by the dry weight of soil sample. For a particular ratio, a significant increase in unconfined compressive strength q_u of soil was observed when adding plain plastic strip of size (1x15) mm for addition ratio of 1.0 % while more increase in unconfined compressive strength q_u was deducted when adding corrugated plastic strips of the same size and addition ratio.

Keywords: Soil improvement, plastic reinforced clayey sand soil, unconfined compressive strength, plain strip, corrugated strip.

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