Volume Change Behaviors of Expansive Soils Stabilized with Recycled Ashes and FibersSource: Journal of Materials in Civil Engineering:;2006:;Volume ( 018 ):;issue: 002DOI: 10.1061/(ASCE)0899-1561(2006)18:2(295)Publisher: American Society of Civil Engineers
Abstract: In this paper, class F fly ash, bottom ash, polypropylene fibers, and nylon fibers were evaluated as potential stabilizers in enhancing volume change properties of sulfate rich expansive soils. As a part of the research evaluation, a comprehensive laboratory experimental program was designed and conducted on two different subgrade soils from two locations in Texas. Four dosage levels of each stabilizer, two compaction moisture content levels, and 14 days curing period were investigated. Volume change behavioral tests including volumetric free swell, volumetric shrinkage strain, and vertical swell pressure tests were conducted on both isolated stabilizer treated and combined ash-fiber stabilized soils. Ash stabilizers showed improvements in reducing swelling, shrinkage, and plasticity characteristics by 20–80% whereas fibers treatments resulted in varied improvements. In combined treatments, class F fly ash mixed with nylon fibers was the most effective treatment on both Dallas and Arlington soils, where the soil property enhancements were considered average-to-moderate. Possible mechanisms that resulted in the soil property improvements are discussed along with the recommended stabilizers and their dosages for expansive soil treatments.
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contributor author | Koonnamas Punthutaecha | |
contributor author | Anand J. Puppala | |
contributor author | Sai K Vanapalli | |
contributor author | Hilary Inyang | |
date accessioned | 2017-05-08T21:18:00Z | |
date available | 2017-05-08T21:18:00Z | |
date copyright | April 2006 | |
date issued | 2006 | |
identifier other | %28asce%290899-1561%282006%2918%3A2%28295%29.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/46128 | |
description abstract | In this paper, class F fly ash, bottom ash, polypropylene fibers, and nylon fibers were evaluated as potential stabilizers in enhancing volume change properties of sulfate rich expansive soils. As a part of the research evaluation, a comprehensive laboratory experimental program was designed and conducted on two different subgrade soils from two locations in Texas. Four dosage levels of each stabilizer, two compaction moisture content levels, and 14 days curing period were investigated. Volume change behavioral tests including volumetric free swell, volumetric shrinkage strain, and vertical swell pressure tests were conducted on both isolated stabilizer treated and combined ash-fiber stabilized soils. Ash stabilizers showed improvements in reducing swelling, shrinkage, and plasticity characteristics by 20–80% whereas fibers treatments resulted in varied improvements. In combined treatments, class F fly ash mixed with nylon fibers was the most effective treatment on both Dallas and Arlington soils, where the soil property enhancements were considered average-to-moderate. Possible mechanisms that resulted in the soil property improvements are discussed along with the recommended stabilizers and their dosages for expansive soil treatments. | |
publisher | American Society of Civil Engineers | |
title | Volume Change Behaviors of Expansive Soils Stabilized with Recycled Ashes and Fibers | |
type | Journal Paper | |
journal volume | 18 | |
journal issue | 2 | |
journal title | Journal of Materials in Civil Engineering | |
identifier doi | 10.1061/(ASCE)0899-1561(2006)18:2(295) | |
tree | Journal of Materials in Civil Engineering:;2006:;Volume ( 018 ):;issue: 002 | |
contenttype | Fulltext |