Influence of amorphous raw rice husk ash as precursor and curing condition on the performance of alkali activated concrete

The detrimental impact of Portland cement (PC) which is the primary binder in the production of cementitious materials such as concrete has called for a need to use alternative binders to produce concrete. Of such promising sustainable alternative to the conventional PC concrete (PCC) are alkali-act...

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Autores principales:	Thamer Alomayri, Adeyemi Adesina, Shaswat Das
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Raw rice husk ash Blast furnace slag Alkali-activated concrete Mechanical properties Durability properties Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/91a2fc5decb646679957cb0c934d9687
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spelling	oai:doaj.org-article:91a2fc5decb646679957cb0c934d96872021-11-18T04:49:00ZInfluence of amorphous raw rice husk ash as precursor and curing condition on the performance of alkali activated concrete2214-509510.1016/j.cscm.2021.e00777https://doaj.org/article/91a2fc5decb646679957cb0c934d96872021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214509521002928https://doaj.org/toc/2214-5095The detrimental impact of Portland cement (PC) which is the primary binder in the production of cementitious materials such as concrete has called for a need to use alternative binders to produce concrete. Of such promising sustainable alternative to the conventional PC concrete (PCC) are alkali-activated concrete (AACs) which are produced by using a binder composed of an aluminosilicate precursor and alkali activator. In this study, blast furnace slag (BFS) was used as the primary precursors in the production of AACs. Amorphous raw rice husk ash (RRHA) was used at various dosages to partially replace BFS as the precursor. The corresponding influence of the RRHA content and curing conditions on the performance of AACs were evaluated. The two curing conditions utilized are ambient temperature curing and thermal curing for 24 h at 60 °C followed by ambient temperature curing. Findings from this study showed that the use of RRHA as a 10% replacement of the BFS is optimum as it yielded enhanced mechanical and durability performance. It was also found out that the thermal curing of AACs for 24 h before curing at ambient temperature is beneficial to improving the performance.Thamer AlomayriAdeyemi AdesinaShaswat DasElsevierarticleRaw rice husk ashBlast furnace slagAlkali-activated concreteMechanical propertiesDurability propertiesMaterials of engineering and construction. Mechanics of materialsTA401-492ENCase Studies in Construction Materials, Vol 15, Iss , Pp e00777- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Raw rice husk ash Blast furnace slag Alkali-activated concrete Mechanical properties Durability properties Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Raw rice husk ash Blast furnace slag Alkali-activated concrete Mechanical properties Durability properties Materials of engineering and construction. Mechanics of materials TA401-492 Thamer Alomayri Adeyemi Adesina Shaswat Das Influence of amorphous raw rice husk ash as precursor and curing condition on the performance of alkali activated concrete
description	The detrimental impact of Portland cement (PC) which is the primary binder in the production of cementitious materials such as concrete has called for a need to use alternative binders to produce concrete. Of such promising sustainable alternative to the conventional PC concrete (PCC) are alkali-activated concrete (AACs) which are produced by using a binder composed of an aluminosilicate precursor and alkali activator. In this study, blast furnace slag (BFS) was used as the primary precursors in the production of AACs. Amorphous raw rice husk ash (RRHA) was used at various dosages to partially replace BFS as the precursor. The corresponding influence of the RRHA content and curing conditions on the performance of AACs were evaluated. The two curing conditions utilized are ambient temperature curing and thermal curing for 24 h at 60 °C followed by ambient temperature curing. Findings from this study showed that the use of RRHA as a 10% replacement of the BFS is optimum as it yielded enhanced mechanical and durability performance. It was also found out that the thermal curing of AACs for 24 h before curing at ambient temperature is beneficial to improving the performance.
format	article
author	Thamer Alomayri Adeyemi Adesina Shaswat Das
author_facet	Thamer Alomayri Adeyemi Adesina Shaswat Das
author_sort	Thamer Alomayri
title	Influence of amorphous raw rice husk ash as precursor and curing condition on the performance of alkali activated concrete
title_short	Influence of amorphous raw rice husk ash as precursor and curing condition on the performance of alkali activated concrete
title_full	Influence of amorphous raw rice husk ash as precursor and curing condition on the performance of alkali activated concrete
title_fullStr	Influence of amorphous raw rice husk ash as precursor and curing condition on the performance of alkali activated concrete
title_full_unstemmed	Influence of amorphous raw rice husk ash as precursor and curing condition on the performance of alkali activated concrete
title_sort	influence of amorphous raw rice husk ash as precursor and curing condition on the performance of alkali activated concrete
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/91a2fc5decb646679957cb0c934d9687
work_keys_str_mv	AT thameralomayri influenceofamorphousrawricehuskashasprecursorandcuringconditionontheperformanceofalkaliactivatedconcrete AT adeyemiadesina influenceofamorphousrawricehuskashasprecursorandcuringconditionontheperformanceofalkaliactivatedconcrete AT shaswatdas influenceofamorphousrawricehuskashasprecursorandcuringconditionontheperformanceofalkaliactivatedconcrete
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Influence of amorphous raw rice husk ash as precursor and curing condition on the performance of alkali activated concrete

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