Properties Of Concrete Containing Rice Husk Ash Under Aggressive Environments Subjected To Wetting And Drying

Rice husk which is agro waste from a rice mill was burned at 700 oe for 6 hours in a gas furnace. The rice husk ash (RHA) was grounded using a laboratory ball mill with porcelain balls. The optimum RHA grinding time was determined. Eight different fineness grades of RHA were examined and it was f...

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Main Author:	Putrajaya, Ramadhan Syah
Format:	Thesis
Language:	English
Published:	2012
Subjects:	TA1-2040 Engineering (General) Civil engineering (General)
Online Access:	http://eprints.usm.my/59345/1/RAMADHANSYAH%20PUTRA%20JAYA24.pdf
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id	my-usm-ep.59345
record_format	uketd_dc
spelling	my-usm-ep.593452023-09-07T06:22:41Z Properties Of Concrete Containing Rice Husk Ash Under Aggressive Environments Subjected To Wetting And Drying 2012-01 Putrajaya, Ramadhan Syah TA1-2040 Engineering (General). Civil engineering (General) Rice husk which is agro waste from a rice mill was burned at 700 oe for 6 hours in a gas furnace. The rice husk ash (RHA) was grounded using a laboratory ball mill with porcelain balls. The optimum RHA grinding time was determined. Eight different fineness grades of RHA were examined and it was found that the specific gravity and the fineness of the rice husk ash increase with an increase in grinding time. Even though. the morphology of the RHA changed with grinding. There appears to be an optimum grinding time of approximately 90 min (to 9.52 urn particle size), during which time the compressive strength and strength activity index increases significantly. The use of rice husk ash grounded for 90 min produced concrete with good strength and low porosity. On the other hand, the effect of ground RHA blended cement subjected to 5% sodium chloride solution (NaCI), 5% sodium sulfate solution (Na,S04), and seawater through cyclic wetting and drying was also investigated. Four RHA replacement levels were considered in the study: 10%, 20%, 30%, and 40% by weight of cement. The durability performance of the RHA blended cement exposed to aggressive environment was evaluated through compressive strength, Rapid Chloride Penetrability Test CRCPT), and Rapid Migration Test CRMT). In addition, microstructural changes that occur in specimens due to aggressive environmental effects were identified through thermal analysis, XRD techniques, and SEM. Test results showed that RHA can be satisfactorily used as a cement replacement material in order to increases the durability of concrete. 2012-01 Thesis http://eprints.usm.my/59345/ http://eprints.usm.my/59345/1/RAMADHANSYAH%20PUTRA%20JAYA24.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Awam
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	TA1-2040 Engineering (General) Civil engineering (General)
spellingShingle	TA1-2040 Engineering (General) Civil engineering (General) Putrajaya, Ramadhan Syah Properties Of Concrete Containing Rice Husk Ash Under Aggressive Environments Subjected To Wetting And Drying
description	Rice husk which is agro waste from a rice mill was burned at 700 oe for 6 hours in a gas furnace. The rice husk ash (RHA) was grounded using a laboratory ball mill with porcelain balls. The optimum RHA grinding time was determined. Eight different fineness grades of RHA were examined and it was found that the specific gravity and the fineness of the rice husk ash increase with an increase in grinding time. Even though. the morphology of the RHA changed with grinding. There appears to be an optimum grinding time of approximately 90 min (to 9.52 urn particle size), during which time the compressive strength and strength activity index increases significantly. The use of rice husk ash grounded for 90 min produced concrete with good strength and low porosity. On the other hand, the effect of ground RHA blended cement subjected to 5% sodium chloride solution (NaCI), 5% sodium sulfate solution (Na,S04), and seawater through cyclic wetting and drying was also investigated. Four RHA replacement levels were considered in the study: 10%, 20%, 30%, and 40% by weight of cement. The durability performance of the RHA blended cement exposed to aggressive environment was evaluated through compressive strength, Rapid Chloride Penetrability Test CRCPT), and Rapid Migration Test CRMT). In addition, microstructural changes that occur in specimens due to aggressive environmental effects were identified through thermal analysis, XRD techniques, and SEM. Test results showed that RHA can be satisfactorily used as a cement replacement material in order to increases the durability of concrete.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Putrajaya, Ramadhan Syah
author_facet	Putrajaya, Ramadhan Syah
author_sort	Putrajaya, Ramadhan Syah
title	Properties Of Concrete Containing Rice Husk Ash Under Aggressive Environments Subjected To Wetting And Drying
title_short	Properties Of Concrete Containing Rice Husk Ash Under Aggressive Environments Subjected To Wetting And Drying
title_full	Properties Of Concrete Containing Rice Husk Ash Under Aggressive Environments Subjected To Wetting And Drying
title_fullStr	Properties Of Concrete Containing Rice Husk Ash Under Aggressive Environments Subjected To Wetting And Drying
title_full_unstemmed	Properties Of Concrete Containing Rice Husk Ash Under Aggressive Environments Subjected To Wetting And Drying
title_sort	properties of concrete containing rice husk ash under aggressive environments subjected to wetting and drying
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Awam
publishDate	2012
url	http://eprints.usm.my/59345/1/RAMADHANSYAH%20PUTRA%20JAYA24.pdf
_version_	1783729537451819008

Properties Of Concrete Containing Rice Husk Ash Under Aggressive Environments Subjected To Wetting And Drying

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