Effect of Fiber Reinforcement on the Hydraulic Conductivity Behavior of Lime-Treated Expansive Soil - Reliability-Based Optimization Perspective

Arif Ali Baig Moghal, B. Munwar Basha, Bhaskar Chittoori, Mosleh Ali Al-Shamrani

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

16 Scopus citations

Abstract

Expansive soils which create heave and shrinkage related distresses are considered to be extremely problematic globally. When these soils are used alone or in conjunction with fiber-reinforcement as hydraulic barriers in waste containment systems, their prime purpose is to impede flow. Polypropylene fiber materials are durable and sustain improvement in soil properties in the long run. In order to have intact bonding between the randomly mixed fiber and clay, an additive in the form of lime is considered. In this study, the combined effect of lime and randomly oriented polypropylene fiber inclusion on the hydraulic conductivity behavior of an expansive soil is evaluated. The dosage of lime was fixed at 6% resorting to soil-pH response. The effect of fiber type (fibercast and fibermesh), fiber dosage (0.2, 0.4, and 0.6% by weight of soil) and fiber length (6 mm and 12 mm) on the hydraulic conductivity behavior was studied. Statistical analysis was performed to correlate the hydraulic conductivity of treated expansive soil with dosage and length of randomly oriented polypropylene fibers. Two exponential best fit equations are proposed for estimating the hydraulic conductivity of treated expansive soils in terms of dosage and length of two types of polypropylene fibers. Further, reliability analysis was performed to examine the suitability of treated expansive soils for waste containment in municipal solid waste (MSW) landfills.

Original languageEnglish
Title of host publicationGeotechnical Special Publication
EditorsWen-chieh Cheng, Jason Y. Wu
Pages25-34
Number of pages10
Edition263 GSP
ISBN (Electronic)9780784480069
DOIs
StatePublished - 2016
Event4th Geo-China International Conference: Innovative and Sustainable Use of Geomaterials and Geosystems, Geo-China 2016 - Shandong, China
Duration: 25 Jul 201627 Jul 2016

Publication series

NameGeotechnical Special Publication
Number263 GSP
Volume2016-January
ISSN (Print)0895-0563

Conference

Conference4th Geo-China International Conference: Innovative and Sustainable Use of Geomaterials and Geosystems, Geo-China 2016
Country/TerritoryChina
CityShandong
Period25/07/1627/07/16

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