Stabilization of clayey subgrade with waste pumice for road infrastructure

High-plasticity clayey subgrade, which is unsuitable for road construction, may sometimes occur along highway routes. In such cases, engineers need to change the route of a highway project, resulting in an increase in road length and project costs. In this study, waste pumice was examined for stabil...

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Bibliographic Details
Published inScience and engineering of composite materials Vol. 22; no. 5; pp. 583 - 590
Main Authors Çimen, Ömür, Saltan, Mehmet, Keskin, S. Nilay
Format Journal Article
LanguageEnglish
Published Berlin De Gruyter 01.09.2015
Walter de Gruyter GmbH
Subjects
California bearing ratio
Clay
Clay (material)
Compression tests
Highway construction
Mechanical properties
Penetration tests
Plastic properties
Plasticity
Pumice
Road construction
road infrastructure
Roads
Roads & highways
Stabilization
Subgrades
Swelling
waste material
Wastes
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Summary:High-plasticity clayey subgrade, which is unsuitable for road construction, may sometimes occur along highway routes. In such cases, engineers need to change the route of a highway project, resulting in an increase in road length and project costs. In this study, waste pumice was examined for stabilization of high-plasticity clayey subgrade, which is inappropriate for road construction. For this purpose, the physical and index properties of clay and pumice were determined. Then, the pumice was mixed with high plasticity clay at different ratios by weight. By performing standard Proctor compaction tests on the mixtures, the effects of adding pumice on compaction were also studied. Unconfined compression tests and California bearing ratio (CBR) tests were performed on all pumice-clay mixtures, and the test results and the CBR ratios were compared for each sample, respectively. The results showed that pumice stabilization improved the mechanical properties and reduced the swelling potential of high plasticity clayey subgrade.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0792-1233
2191-0359
DOI:10.1515/secm-2013-0315