Chapter
Apr 26, 2012
Effect of Polypropylene Fibre on the Strength Characteristics of Lightly Cemented Clayey Soil Mixtures
Publication: Geo-Frontiers 2011: Advances in Geotechnical Engineering
Abstract
An experimental program was undertaken to investigate the effects of discrete polypropylene fibres and low dosage ordinary Portland cement (OPC) on the stress-strain and unconfined compressive strength behavior of clayey soil. Multifilament polypropylene fibre in three different lengths (6.0mm, 12.0mm, and 19.0mm) and two fibre dosages (i.e. 0.5% and 1.0% by dry weight of soil) were considered. At first, compaction characteristics of the untreated soil were evaluated at standard compaction energy. Using compaction characteristics of untreated soil 9 different fibre-cement-soil mixtures (i.e. fibre/soil-cement ratio of 0.5% and 1.0% and cement/soil ratio of 0.0%, 3.0% and 6.0% by dry weight) were composed, and their unconfined compression test were carried out after 1-, 7-, and 28-days curing periods. The obtained test results indicated that the effect of fibre dosage on the stress-strain behavior is superior to the effect of fibre length.
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© 2011 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Department of Civil Engineering, Gazi University, 06570 Maltepe, Ankara, Turkey.E-mail: [email protected]
Department of Civil Engineering, Gazi University, 06570 Maltepe, Ankara, Turkey.E-mail: [email protected]
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