Improvement of High-Volume Fly Ash Cementitious Material Using Single Alkali Activation

Abstract This research aimed to present the improvement of the cementitious material in high-volume fly ash using only one alkali activator. Fly ash was used as a partial replacement for Portland cement type I, varying from 0 to 60% by weight of the binder. Concentrations of NaOH varying from 0.00 t...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Wichian Chalee, Reaksmey Soeurt, Pumipat Pachana, Smith Songpiriyakij
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	paste mortar fly ash compressive strength NaOH concentration Systems of building construction. Including fireproof construction, concrete construction TH1000-1725
Acceso en línea:	https://doaj.org/article/3ffec337ee8e4f11921808755a29ddd1
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:3ffec337ee8e4f11921808755a29ddd1
record_format	dspace
spelling	oai:doaj.org-article:3ffec337ee8e4f11921808755a29ddd12021-11-21T12:32:56ZImprovement of High-Volume Fly Ash Cementitious Material Using Single Alkali Activation10.1186/s40069-021-00482-91976-04852234-1315https://doaj.org/article/3ffec337ee8e4f11921808755a29ddd12021-11-01T00:00:00Zhttps://doi.org/10.1186/s40069-021-00482-9https://doaj.org/toc/1976-0485https://doaj.org/toc/2234-1315Abstract This research aimed to present the improvement of the cementitious material in high-volume fly ash using only one alkali activator. Fly ash was used as a partial replacement for Portland cement type I, varying from 0 to 60% by weight of the binder. Concentrations of NaOH varying from 0.00 to 1.25 molar were used as alkali activator. Paste properties and mortar compressive strength at the ages of 3, 7, 14, 28, 60, and 90 days of water curing were investigated. The results reveal that fly ash paste with an alkali activator provides shorter initial setting time when compared to control paste without alkali activator. The use of 0.50 molar NaOH concentration in mortar containing fly ash not exceeding 50% by weight of binder provides the highest compressive strength at any age of curing. At that concentration, there is a significant increase in the 28-day compressive strength of up to 45% over that of the control mortar. In addition, higher NaOH concentration (not exceeding 1.00 molar) has a significant positive effect on the compressive strength of mortar with higher fly ash content, especially over longer curing periods.Wichian ChaleeReaksmey SoeurtPumipat PachanaSmith SongpiriyakijSpringerOpenarticlepastemortarfly ashcompressive strengthNaOH concentrationSystems of building construction. Including fireproof construction, concrete constructionTH1000-1725ENInternational Journal of Concrete Structures and Materials, Vol 15, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	paste mortar fly ash compressive strength NaOH concentration Systems of building construction. Including fireproof construction, concrete construction TH1000-1725
spellingShingle	paste mortar fly ash compressive strength NaOH concentration Systems of building construction. Including fireproof construction, concrete construction TH1000-1725 Wichian Chalee Reaksmey Soeurt Pumipat Pachana Smith Songpiriyakij Improvement of High-Volume Fly Ash Cementitious Material Using Single Alkali Activation
description	Abstract This research aimed to present the improvement of the cementitious material in high-volume fly ash using only one alkali activator. Fly ash was used as a partial replacement for Portland cement type I, varying from 0 to 60% by weight of the binder. Concentrations of NaOH varying from 0.00 to 1.25 molar were used as alkali activator. Paste properties and mortar compressive strength at the ages of 3, 7, 14, 28, 60, and 90 days of water curing were investigated. The results reveal that fly ash paste with an alkali activator provides shorter initial setting time when compared to control paste without alkali activator. The use of 0.50 molar NaOH concentration in mortar containing fly ash not exceeding 50% by weight of binder provides the highest compressive strength at any age of curing. At that concentration, there is a significant increase in the 28-day compressive strength of up to 45% over that of the control mortar. In addition, higher NaOH concentration (not exceeding 1.00 molar) has a significant positive effect on the compressive strength of mortar with higher fly ash content, especially over longer curing periods.
format	article
author	Wichian Chalee Reaksmey Soeurt Pumipat Pachana Smith Songpiriyakij
author_facet	Wichian Chalee Reaksmey Soeurt Pumipat Pachana Smith Songpiriyakij
author_sort	Wichian Chalee
title	Improvement of High-Volume Fly Ash Cementitious Material Using Single Alkali Activation
title_short	Improvement of High-Volume Fly Ash Cementitious Material Using Single Alkali Activation
title_full	Improvement of High-Volume Fly Ash Cementitious Material Using Single Alkali Activation
title_fullStr	Improvement of High-Volume Fly Ash Cementitious Material Using Single Alkali Activation
title_full_unstemmed	Improvement of High-Volume Fly Ash Cementitious Material Using Single Alkali Activation
title_sort	improvement of high-volume fly ash cementitious material using single alkali activation
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/3ffec337ee8e4f11921808755a29ddd1
work_keys_str_mv	AT wichianchalee improvementofhighvolumeflyashcementitiousmaterialusingsinglealkaliactivation AT reaksmeysoeurt improvementofhighvolumeflyashcementitiousmaterialusingsinglealkaliactivation AT pumipatpachana improvementofhighvolumeflyashcementitiousmaterialusingsinglealkaliactivation AT smithsongpiriyakij improvementofhighvolumeflyashcementitiousmaterialusingsinglealkaliactivation
_version_	1718418936986337280

Improvement of High-Volume Fly Ash Cementitious Material Using Single Alkali Activation

Ejemplares similares