Stabilising peat soil with cement and silica fume

Stabilising soft, wet and unconsolidated peat soil by using cement as binders and silica fume as additive is often cost-effective compared with other ground improvement methods. This study was carried out by adding 5–50% (by weight) cement to peat soil, and silica fume was added at the rate of 5–10%...

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Main Authors: Kalantari, Behzad, Prasad, Arun, Kim Huat, Bujang
Format: Article
Language:English
Published: ICE Publishing 2011
Online Access:http://psasir.upm.edu.my/id/eprint/22958/
http://psasir.upm.edu.my/id/eprint/22958/1/Stabilising%20peat%20soil%20with%20cement%20and%20silica%20fume.pdf
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author Kalantari, Behzad
Prasad, Arun
Kim Huat, Bujang
author_facet Kalantari, Behzad
Prasad, Arun
Kim Huat, Bujang
author_sort Kalantari, Behzad
building UPM Institutional Repository
collection Online Access
description Stabilising soft, wet and unconsolidated peat soil by using cement as binders and silica fume as additive is often cost-effective compared with other ground improvement methods. This study was carried out by adding 5–50% (by weight) cement to peat soil, and silica fume was added at the rate of 5–10% (by weight) of cement. An air-curing technique was used to cure the samples, as it was found that the water content of the untreated peat soil was very high. The air-cured peat samples were tested for unconfined compressive strength (UCS) and California bearing ratio (CBR) for two conditions: soaked and unsoaked. For the soaked condition the samples were submerged in water for a period of 96 h; the samples after 90 days of air curing were considered as being in the unsoaked condition. From the test results, it was observed that the UCS and CBR increased by a factor as high as 11 and 25 respectively as compared with untreated peat soil. The optimum dose of cement and silica fume was also evaluated. It was observed that the upper layer of in situ peat soil can be stabilised with cement and silica fume to increase the strength of sub-base for the pavement.
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spelling upm-229582015-12-01T01:24:52Z http://psasir.upm.edu.my/id/eprint/22958/ Stabilising peat soil with cement and silica fume Kalantari, Behzad Prasad, Arun Kim Huat, Bujang Stabilising soft, wet and unconsolidated peat soil by using cement as binders and silica fume as additive is often cost-effective compared with other ground improvement methods. This study was carried out by adding 5–50% (by weight) cement to peat soil, and silica fume was added at the rate of 5–10% (by weight) of cement. An air-curing technique was used to cure the samples, as it was found that the water content of the untreated peat soil was very high. The air-cured peat samples were tested for unconfined compressive strength (UCS) and California bearing ratio (CBR) for two conditions: soaked and unsoaked. For the soaked condition the samples were submerged in water for a period of 96 h; the samples after 90 days of air curing were considered as being in the unsoaked condition. From the test results, it was observed that the UCS and CBR increased by a factor as high as 11 and 25 respectively as compared with untreated peat soil. The optimum dose of cement and silica fume was also evaluated. It was observed that the upper layer of in situ peat soil can be stabilised with cement and silica fume to increase the strength of sub-base for the pavement. ICE Publishing 2011-02 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/22958/1/Stabilising%20peat%20soil%20with%20cement%20and%20silica%20fume.pdf Kalantari, Behzad and Prasad, Arun and Kim Huat, Bujang (2011) Stabilising peat soil with cement and silica fume. Geotechnical Engineering, 164 (1). pp. 33-39. ISSN 1353-2618; ESSN: 1751-8563 http://www.icevirtuallibrary.com/doi/abs/10.1680/geng.900044?journalCode=jgeen 10.1680/geng.900044
spellingShingle Kalantari, Behzad
Prasad, Arun
Kim Huat, Bujang
Stabilising peat soil with cement and silica fume
title Stabilising peat soil with cement and silica fume
title_full Stabilising peat soil with cement and silica fume
title_fullStr Stabilising peat soil with cement and silica fume
title_full_unstemmed Stabilising peat soil with cement and silica fume
title_short Stabilising peat soil with cement and silica fume
title_sort stabilising peat soil with cement and silica fume
url http://psasir.upm.edu.my/id/eprint/22958/
http://psasir.upm.edu.my/id/eprint/22958/
http://psasir.upm.edu.my/id/eprint/22958/
http://psasir.upm.edu.my/id/eprint/22958/1/Stabilising%20peat%20soil%20with%20cement%20and%20silica%20fume.pdf