Utilization of Cordia Africana wood sawdust ash as partial cement replacement in C 25 concrete

Partial replacements are being explored for cement in concrete to reduce the environmental negative effect of their use. This study aimed at investigating the effect of Cordia Africana sawdust ash (SDA) as a partial replacement of cement, on the fresh and hardened properties of concrete. For this pu...

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Autores principales:	Bikila Meko, Joshua O. Ighalo
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Cement Concrete Sawdust Environment Supplementary cementitious material Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/ac589bc59dcb4ae89c2cde3a78b4c928
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spelling	oai:doaj.org-article:ac589bc59dcb4ae89c2cde3a78b4c9282021-12-01T05:07:16ZUtilization of Cordia Africana wood sawdust ash as partial cement replacement in C 25 concrete2772-397610.1016/j.clema.2021.100012https://doaj.org/article/ac589bc59dcb4ae89c2cde3a78b4c9282021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2772397621000125https://doaj.org/toc/2772-3976Partial replacements are being explored for cement in concrete to reduce the environmental negative effect of their use. This study aimed at investigating the effect of Cordia Africana sawdust ash (SDA) as a partial replacement of cement, on the fresh and hardened properties of concrete. For this purpose, different concrete mixes were designed at a constant water-to-binder ratio of 0.42. The SDA content of 0%, 5%, 10%, 15% and 20% were used to replace cement. The workability and compressive strength of SDA concrete decreased as greater proportions of cement were replaced by the SDA. The initial and the final setting time of concrete increased as the SDA replacement increased. Consistency varied with the increase of water content by weight of cement within an increment of SDA replacement but both are within the acceptable limits of Ethiopian standard. The optimum compressive strength and density for the modified concrete achieved were 33.9 N/mm2 and 2569.3 kg/m3 respectively after 21 days for the sample with 5% replacement. The experimental results of this work are showed that the SDA can be used successfully as a cement replacement in C 25 concrete up to 5% replacement. The study was also able to quantify the environmental benefits of SDA partial replacement by showing a 2.19% reduction of virgin material utilization.Bikila MekoJoshua O. IghaloElsevierarticleCementConcreteSawdustEnvironmentSupplementary cementitious materialMaterials of engineering and construction. Mechanics of materialsTA401-492ENCleaner Materials, Vol 1, Iss , Pp 100012- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Cement Concrete Sawdust Environment Supplementary cementitious material Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Cement Concrete Sawdust Environment Supplementary cementitious material Materials of engineering and construction. Mechanics of materials TA401-492 Bikila Meko Joshua O. Ighalo Utilization of Cordia Africana wood sawdust ash as partial cement replacement in C 25 concrete
description	Partial replacements are being explored for cement in concrete to reduce the environmental negative effect of their use. This study aimed at investigating the effect of Cordia Africana sawdust ash (SDA) as a partial replacement of cement, on the fresh and hardened properties of concrete. For this purpose, different concrete mixes were designed at a constant water-to-binder ratio of 0.42. The SDA content of 0%, 5%, 10%, 15% and 20% were used to replace cement. The workability and compressive strength of SDA concrete decreased as greater proportions of cement were replaced by the SDA. The initial and the final setting time of concrete increased as the SDA replacement increased. Consistency varied with the increase of water content by weight of cement within an increment of SDA replacement but both are within the acceptable limits of Ethiopian standard. The optimum compressive strength and density for the modified concrete achieved were 33.9 N/mm2 and 2569.3 kg/m3 respectively after 21 days for the sample with 5% replacement. The experimental results of this work are showed that the SDA can be used successfully as a cement replacement in C 25 concrete up to 5% replacement. The study was also able to quantify the environmental benefits of SDA partial replacement by showing a 2.19% reduction of virgin material utilization.
format	article
author	Bikila Meko Joshua O. Ighalo
author_facet	Bikila Meko Joshua O. Ighalo
author_sort	Bikila Meko
title	Utilization of Cordia Africana wood sawdust ash as partial cement replacement in C 25 concrete
title_short	Utilization of Cordia Africana wood sawdust ash as partial cement replacement in C 25 concrete
title_full	Utilization of Cordia Africana wood sawdust ash as partial cement replacement in C 25 concrete
title_fullStr	Utilization of Cordia Africana wood sawdust ash as partial cement replacement in C 25 concrete
title_full_unstemmed	Utilization of Cordia Africana wood sawdust ash as partial cement replacement in C 25 concrete
title_sort	utilization of cordia africana wood sawdust ash as partial cement replacement in c 25 concrete
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/ac589bc59dcb4ae89c2cde3a78b4c928
work_keys_str_mv	AT bikilameko utilizationofcordiaafricanawoodsawdustashaspartialcementreplacementinc25concrete AT joshuaoighalo utilizationofcordiaafricanawoodsawdustashaspartialcementreplacementinc25concrete
_version_	1718405564190425088

Utilization of Cordia Africana wood sawdust ash as partial cement replacement in C 25 concrete

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