Partial replacement of cement with rice husk ash in concrete production: an exploratory cost-benefit analysis for low-income communities

Cement is an important construction material in concrete production; however, it is expensive and unaffordable for many low-income and rural communities in developing countries. Rice husk is a by-product from the rice mill process, with an approximate ratio of 200 kg rice husk per one tonne of rice...

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Autores principales:	Muleya Franco, Muwila Natasha, Tembo Chipozya Kosta, Lungu Alice
Formato:	article
Lenguaje:	EN
Publicado:	Sciendo 2021
Materias:	rice husk ash partial replacement concrete cost reduction Production management. Operations management TS155-194
Acceso en línea:	https://doaj.org/article/d39529bdd3f04ebfb73d6c94589ba9b7
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spelling	oai:doaj.org-article:d39529bdd3f04ebfb73d6c94589ba9b72021-12-05T14:11:07ZPartial replacement of cement with rice husk ash in concrete production: an exploratory cost-benefit analysis for low-income communities2543-912X10.2478/emj-2021-0026https://doaj.org/article/d39529bdd3f04ebfb73d6c94589ba9b72021-09-01T00:00:00Zhttps://doi.org/10.2478/emj-2021-0026https://doaj.org/toc/2543-912XCement is an important construction material in concrete production; however, it is expensive and unaffordable for many low-income and rural communities in developing countries. Rice husk is a by-product from the rice mill process, with an approximate ratio of 200 kg rice husk per one tonne of rice produced. This experimental study aimed to investigate the integrity of concrete produced in Zambia using rice husk ash (RHA) to partially replace cement. The primary goal was to carry out a cost–benefit analysis on the use of RHA in concrete. RHA was used to partially replace cement with ratios of 10 %, 20 % and 30 %. The 20 % cement replacement mix produced the optimum 18 MPa concrete strength results at a 0.5 water/binder ratio. This translated in cost reduction of concrete by 12.5 %, which is particularly significant for higher concrete volumes. The produced concrete is suitable for lightly loaded structures, such as foundation footings, surface beds and walkways to benefit low-income communities. The study further concluded that the RHA based concrete was more cost-efficient in structures that were close to areas of rice production due to reduced RHA transportation costs.Muleya FrancoMuwila NatashaTembo Chipozya KostaLungu AliceSciendoarticlerice husk ashpartial replacementconcretecost reductionProduction management. Operations managementTS155-194ENEngineering Management in Production and Services, Vol 13, Iss 3, Pp 127-141 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	rice husk ash partial replacement concrete cost reduction Production management. Operations management TS155-194
spellingShingle	rice husk ash partial replacement concrete cost reduction Production management. Operations management TS155-194 Muleya Franco Muwila Natasha Tembo Chipozya Kosta Lungu Alice Partial replacement of cement with rice husk ash in concrete production: an exploratory cost-benefit analysis for low-income communities
description	Cement is an important construction material in concrete production; however, it is expensive and unaffordable for many low-income and rural communities in developing countries. Rice husk is a by-product from the rice mill process, with an approximate ratio of 200 kg rice husk per one tonne of rice produced. This experimental study aimed to investigate the integrity of concrete produced in Zambia using rice husk ash (RHA) to partially replace cement. The primary goal was to carry out a cost–benefit analysis on the use of RHA in concrete. RHA was used to partially replace cement with ratios of 10 %, 20 % and 30 %. The 20 % cement replacement mix produced the optimum 18 MPa concrete strength results at a 0.5 water/binder ratio. This translated in cost reduction of concrete by 12.5 %, which is particularly significant for higher concrete volumes. The produced concrete is suitable for lightly loaded structures, such as foundation footings, surface beds and walkways to benefit low-income communities. The study further concluded that the RHA based concrete was more cost-efficient in structures that were close to areas of rice production due to reduced RHA transportation costs.
format	article
author	Muleya Franco Muwila Natasha Tembo Chipozya Kosta Lungu Alice
author_facet	Muleya Franco Muwila Natasha Tembo Chipozya Kosta Lungu Alice
author_sort	Muleya Franco
title	Partial replacement of cement with rice husk ash in concrete production: an exploratory cost-benefit analysis for low-income communities
title_short	Partial replacement of cement with rice husk ash in concrete production: an exploratory cost-benefit analysis for low-income communities
title_full	Partial replacement of cement with rice husk ash in concrete production: an exploratory cost-benefit analysis for low-income communities
title_fullStr	Partial replacement of cement with rice husk ash in concrete production: an exploratory cost-benefit analysis for low-income communities
title_full_unstemmed	Partial replacement of cement with rice husk ash in concrete production: an exploratory cost-benefit analysis for low-income communities
title_sort	partial replacement of cement with rice husk ash in concrete production: an exploratory cost-benefit analysis for low-income communities
publisher	Sciendo
publishDate	2021
url	https://doaj.org/article/d39529bdd3f04ebfb73d6c94589ba9b7
work_keys_str_mv	AT muleyafranco partialreplacementofcementwithricehuskashinconcreteproductionanexploratorycostbenefitanalysisforlowincomecommunities AT muwilanatasha partialreplacementofcementwithricehuskashinconcreteproductionanexploratorycostbenefitanalysisforlowincomecommunities AT tembochipozyakosta partialreplacementofcementwithricehuskashinconcreteproductionanexploratorycostbenefitanalysisforlowincomecommunities AT lungualice partialreplacementofcementwithricehuskashinconcreteproductionanexploratorycostbenefitanalysisforlowincomecommunities
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Partial replacement of cement with rice husk ash in concrete production: an exploratory cost-benefit analysis for low-income communities

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