Author:
Sharo Abdulla A.,Ashteyat Ahmed Mohammed,Alawneh Ahmed S.,Bany Khaled Bashar Ali
Abstract
Purpose
The purpose of this paper is to evaluate the possible use of oil shale as a soil stabilizing agent for expansive soils.
Design/methodology/approach
An experimental work has been fulfilled to investigate the influence of oil shale ash (OSA) on the geotechnical behavior of the expansive soil of Irbid, Jordan. Three swelling-shrinkage soils were considered in this study along with various percentages of OSA varying at 2, 4, 6, 8, 10 and 12 per cent by dry weight of the soil. A series of laboratory tests were conducted on the soil samples before and after mixing it with OSA. These tests were soil classification, Atterberg limits, compaction test, falling head permeability test, unconfined compression test, free swelling, swelling pressure and California bearing ratio (CBR) test.
Findings
Laboratory tests results indicated that OSA is effective in improving the texture and strength of the treated soil by reducing plasticity index, swelling potential and swelling pressure and moderately enhancing soil strength properties including the unconfined compressive strength (qu), maximum dry unit weight (γd-max.) and CBR test.
Originality/value
OSA showed potential as a low-cost soil stabilizing agent for swell-shrink soils.
Subject
Electrical and Electronic Engineering,Mechanical Engineering,Mechanics of Materials,Geotechnical Engineering and Engineering Geology,Civil and Structural Engineering
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