Using rice husk ash as a cement replacement material in concrete

Anwar, Mohd; Miyagawa, T.; Gaweesh, Moustafa T. K.

doi:10.1016/s0713-2743(00)80077-x

Cited by 58 publications

(34 citation statements)

References 3 publications

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“…e commercial uses of RHA are in the silica extraction process [10], as pozzolanic material [4,11,12] and other applications. e silica exists in amorphous and crystalline forms depending on the temperature and duration of burning.…”

Section: Introductionmentioning

confidence: 99%

Efficiency of Rice Husk Ash as Cementitious Material in High‐Strength Cement‐Admixed Clay

Jongpradist

Homtragoon

Sukkarak

et al. 2018

Advances in Civil Engineering

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e potential and efficiency of using rice husk ash (RHA) to add up or partially replace Portland cement in deep cement mixing technique are examined. A series of unconfined compression tests on cement-RHA-stabilized clay are conducted to investigate the influence of RHA on the mixture properties. Special attention is paid to its efficiency for increasing the strength by partial cement replacement to obtain high-strength soil cement, and it is compared with fly ash. Test results indicate that up to 35% of RHA could be advantageously added up to enhance the strength if the cement content in the mixture is larger than 10%. e RHA enhances the strength of cement-admixed clay by larger than 100% at 28 days. For curing time of 14 and 28 days, the RHA exhibits higher efficiency on Portland cement replacement when the cement and overall cementitious contents are not less than 20 and 35%, respectively. e optimum condition for high-strength mixture is achieved when RHA is added to the 20% cement content mixture. When compared with fly ash of similar grain size, the efficiency of RHA is higher when the content to be added is greater than 15%. is indicates the suitability of RHA for use in high-strength soil-cement.

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Section: Introductionmentioning

confidence: 99%

Efficiency of Rice Husk Ash as Cementitious Material in High‐Strength Cement‐Admixed Clay

Jongpradist

Homtragoon

Sukkarak

et al. 2018

Advances in Civil Engineering

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“…Rice husk can be used as boiler fuel to generate electricity or steam. But it also can contribute about 20% of its weight to RHA after incineration [3]. So RHA is usually treated as industrial waste and hard to be exploited and utilized [4].…”

Section: Introductionmentioning

confidence: 99%

Studies on effects of burning conditions and rice husk ash (RHA) blending amount on the mechanical behavior of cement

Bie¹,

Song²,

Liu³

et al. 2015

Cement and Concrete Composites

174

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“…Recently there are considerable efforts worldwide of utilizing indigenous and waste, materials in concrete. One of such materials is the rice husk which under controlled burning, and if sufficiently ground, the ash that is produced can be used as a cement replacement material in concrete (Anwar et al, 2000). Rice husks are used as building materials; lightweight concrete briquettes have been made from partly burnt husks.…”

Section: Introductionmentioning

confidence: 99%

Studies on the Effect of Rice Husk Ash as Cement Admixture

Dabai¹,

Muhammad²,

Bagudo³

et al. 2010

Nig J Bas App Sci

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ABSTRACT:Compressive strength tests were carried out on six mortar cubes with cement replaced by rice husk ash (RHA) at five levels (0, 10, 20, 30, 40 and 50%). After the curing age of 3, 7, 14 and 28 days. The compressive strengths of the cubes at 10% replacement were 12. 60, 14.20, 22.10, 28.50 and 36.30 N/mm 2 respectively and increased with age of curing but decreased with increase in RHA content for all mixes. The chemical analysis of the rice husk ash revealed high amount of silica (68.12%), alumina (1.01%) and oxides such as calcium oxide (1.01%) and iron oxide (0.78%) responsible for strength, soundness and setting of the concrete. It also contained high amount of magnesia (1.31%) which is responsible for the unsoundness. This result, therefore, indicated that RHA can be used as cement substitute at 10% and 20% replacement and 14 and 28 day curing age.

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Using rice husk ash as a cement replacement material in concrete

Cited by 58 publications

References 3 publications

Efficiency of Rice Husk Ash as Cementitious Material in High‐Strength Cement‐Admixed Clay

Efficiency of Rice Husk Ash as Cementitious Material in High‐Strength Cement‐Admixed Clay

Studies on effects of burning conditions and rice husk ash (RHA) blending amount on the mechanical behavior of cement

Studies on the Effect of Rice Husk Ash as Cement Admixture

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