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primary topic: The effects of partial replacement of cement in cement mortar and brick by microwave incinerated rice husk ash (MIRHA)

The effects of partial replacement of cement in cement mortar and brick by microwave incinerated rice husk ash (MIRHA)
type: AcademicArticle
type: Article
abstract: The demand for high quality sustainable materials has increased and encouraged the researchers in building technology to find new alternatives. Rice husk generated from the rice production poses a major problem of disposal especially when open burning is no longer permitted due to the environmental issues. The use of pozzolanic materials is being investigated to reduce the carbon dioxide emitted per tonne of concrete produced and utilized. This study investigates the potential of using Microwave Incinerated Rice Husk Ash (MIRHA) in mortar mixes made of Ordinary Portland Cement (OPC). The MIRHA was obtained by burning rice husk at controlled temperature using microwave incinerator. In the experimental study on compressive strength of cement mortar the water-binder ratio was kept constant at 0.5. Control mortar without any replacement of cement and also mortar with 5, 10, 15, 20 and 25 of OPC replaced by MIRHA were studied with different binder-sand ratio of 1:3, 1:4. 1:5 and 1:6. The compressive tests were conducted for the samples at 7 and 28 days. The result has revealed that, the MIRHA could be used in cement mortar due to its refined microstructures. In addition to that, the compressive test results were compared with three different standards: ASTM, MS and BS for bricks manufacturing. The results show the potential of using MIRHA in cement brick production. Amongst the cement replacement mixes, 20 MIRHA has shown highest compressive strength. © 2011 WIT Press.
date: 2011
volume: 148
is part of: WIT Transactions on Ecology and the Environment
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository

WITPress
type: Organization

WIT Transactions on Ecology and the Environment
type: Collection
issn: 17433541

K. Vallyutham
type: Person
given name: K.
family name: Vallyutham

S. Wan
type: Person
given name: S.
family name: Wan

N.S. Potty
type: Person
given name: N.S.
family name: Potty

M.S. Liew
type: Person
given name: M.S.
family name: Liew

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primary topic: The effects of partial replacement of cement in cement mortar and brick by microwave incinerated rice husk ash (MIRHA)