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JSIR Vol.66(12) [December 2007] >


Title: Influence of wollastonite on mechanical properties of concrete
Authors: Mathur, Renu
Misra, A K
Goel, Pankaj
Keywords: Drying shrinkage
Durability
Flexural strength
Micro-fibre reinforcement
Wollastonite
Issue Date: Dec-2007
Publisher: CSIR
Abstract: Studies were made on cement concrete and cement-fly ash concrete mixes incorporating wollastonite as partial substitute of cementitious material and sand respectively. Improvements in compressive (28-35%) and flexural strength (36-42%) at 28 and 56 days respectively were observed by incorporation of wollastonite (10%) in concrete mixes. By incorporation of wollastonite, reduction in water absorption, drying-shrinkage and abrasion loss of concrete, and enhancement in durability against alternate freezing-thawing and sulphate attack were observed. Because of high concrete strength and abrasion resistance, a better utilization of concrete cross section is possible. Alternatively, thickness of pavement slab can be reduced by incorporation of wollastonite micro-fibres in concrete mixes.
Page(s): 1029-1034
ISSN: 0022-4456
Source:JSIR Vol.66(12) [December 2007]

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