Hybrid cement based on the alkali activation of by-products of coal

This study focuses on the production of an alternative cementitious material with low environmental impact through the evaluation of two-coal combustion by-products. Hybrid cements based on the alkali activation of fly ash, (FA) and boiler slag (BS) blend with a proportion of Portland cement (OPC) u...

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Autores principales:	Rivera,Jhonathan F, Mejia,Johanna M, Mejia de Gutierrez,Ruby, Gordillo,Marisol
Lenguaje:	English
Publicado:	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile 2014
Materias:	Hybrid binder fly ash boiler slag alkali-activated materials low carbon footprint
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2014000200004
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spelling	oai:scielo:S0718-915X20140002000042015-01-27Hybrid cement based on the alkali activation of by-products of coalRivera,Jhonathan FMejia,Johanna MMejia de Gutierrez,RubyGordillo,Marisol Hybrid binder fly ash boiler slag alkali-activated materials low carbon footprint This study focuses on the production of an alternative cementitious material with low environmental impact through the evaluation of two-coal combustion by-products. Hybrid cements based on the alkali activation of fly ash, (FA) and boiler slag (BS) blend with a proportion of Portland cement (OPC) up to 30% were produced. FA and BS contain an unburned material up to 16%. Response Surface Methodology (RSM) was used to optimize the compressive strength. BS geopolymer achieved high compressive strength (>100 MPa at 28 days) and FA geopolymer reached 30 MPa with thermal curing. The addition of OPC helped modify the curing method. In the case of hybrid based on FA (HFA), there was a significant increase in the compressive strength with levels ranging up to 65 MPa at 28 days without requiring a thermal curing.info:eu-repo/semantics/openAccessEscuela de Construcción Civil, Pontificia Universidad Católica de ChileRevista de la construcción v.13 n.2 20142014-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2014000200004en10.4067/S0718-915X2014000200004
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Hybrid binder fly ash boiler slag alkali-activated materials low carbon footprint
spellingShingle	Hybrid binder fly ash boiler slag alkali-activated materials low carbon footprint Rivera,Jhonathan F Mejia,Johanna M Mejia de Gutierrez,Ruby Gordillo,Marisol Hybrid cement based on the alkali activation of by-products of coal
description	This study focuses on the production of an alternative cementitious material with low environmental impact through the evaluation of two-coal combustion by-products. Hybrid cements based on the alkali activation of fly ash, (FA) and boiler slag (BS) blend with a proportion of Portland cement (OPC) up to 30% were produced. FA and BS contain an unburned material up to 16%. Response Surface Methodology (RSM) was used to optimize the compressive strength. BS geopolymer achieved high compressive strength (>100 MPa at 28 days) and FA geopolymer reached 30 MPa with thermal curing. The addition of OPC helped modify the curing method. In the case of hybrid based on FA (HFA), there was a significant increase in the compressive strength with levels ranging up to 65 MPa at 28 days without requiring a thermal curing.
author	Rivera,Jhonathan F Mejia,Johanna M Mejia de Gutierrez,Ruby Gordillo,Marisol
author_facet	Rivera,Jhonathan F Mejia,Johanna M Mejia de Gutierrez,Ruby Gordillo,Marisol
author_sort	Rivera,Jhonathan F
title	Hybrid cement based on the alkali activation of by-products of coal
title_short	Hybrid cement based on the alkali activation of by-products of coal
title_full	Hybrid cement based on the alkali activation of by-products of coal
title_fullStr	Hybrid cement based on the alkali activation of by-products of coal
title_full_unstemmed	Hybrid cement based on the alkali activation of by-products of coal
title_sort	hybrid cement based on the alkali activation of by-products of coal
publisher	Escuela de Construcción Civil, Pontificia Universidad Católica de Chile
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2014000200004
work_keys_str_mv	AT riverajhonathanf hybridcementbasedonthealkaliactivationofbyproductsofcoal AT mejiajohannam hybridcementbasedonthealkaliactivationofbyproductsofcoal AT mejiadegutierrezruby hybridcementbasedonthealkaliactivationofbyproductsofcoal AT gordillomarisol hybridcementbasedonthealkaliactivationofbyproductsofcoal
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Hybrid cement based on the alkali activation of by-products of coal

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