Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 91, Issue -, Pages 187-194Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2015.05.025
Keywords
Grout; Rheological properties; RHA; Grouting; Waste materials
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This paper investigates the fluidity and rheological properties of the cement based grout mixed with rice husk ash (RHA). The experimental program consisted of fifteen different mixture having 5%, 10%, 20%, and 30% RHA content and three different water to binder ratios (w/b = 0.75%, 1.00%, and 1.25%). Workability properties (marsh cone flow time, plate cohesion, and mini slump diameter), plastic viscosity, apparent viscosity, and the yield stress of the mixtures were determined. Test results showed that increasing replacement level for the RHA amount increases marsh cone flow time, plate cohesion, plastic and apparent viscosity, and the yield stress, but also decreases Mini slump diameter. Shear thickening and pseudo-plastic behavior was observed for high RHA content for w/b ratios greater than 1.00. (C) 2015 Elsevier Ltd. All rights reserved.
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