Soil stabilisation using rice husk ash
Rice husk ash (RHA) has been investigated as a pozzolanic material for soil stabilisation. It contains siliceous and aluminous materials, and reacts with lime or cement, thus having the economic potential to replace some of the lime or cement presently used as an additive in the stabilisation of soil. Three types of soil were treated with varying quantities of lime, cement, RHA and combinations of RHA with lime or cement, under laboratory conditions. To determine the effectiveness of RHA as a stabiliser, unconfined compressive strength (UCS), plasticity index and linear shrinkage were measured for the treated soils Ä using standard Road Traffic Authority of New South Wales (RTA NSW) tests. RHA alone was shown to be unsuitable for modifying soil properties. However, when combined with lime or cement, beneficial results were obtained. The effectiveness of the RHA was expressed in terms of the ratio of the RHA required to either lime or cement saved. RHA is produced by the burning of rice husks (also known as rice hulls), which currently are a little-used by-product of the rice industry, presenting disposal problems worldwide. Information on present and likely future availability of RHA in Australia is included in this paper.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00050164
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Authors:
- Montgomery, D G
- Chmeisse, G
- Publication Date: 1991-12
Language
- English
Media Info
- Pagination: 27-46
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Serial:
- Australian Road Research
- Volume: 21
- Issue Number: 4
- Publisher: ARRB
- ISSN: 0005-0164
Subject/Index Terms
- TRT Terms: Additives; Data collection; Properties of materials; Soil mechanics; Soils
- ATRI Terms: Admixture; Data collection; Material properties; Soil; Soil mechanics; Stabilization
- Subject Areas: Geotechnology; Materials;
Filing Info
- Accession Number: 01405271
- Record Type: Publication
- Source Agency: ARRB
- Files: ITRD, ATRI
- Created Date: Aug 23 2012 11:00PM