The Relationship of Compressive Strength and Chemically Bound Water Content of High-Volume Fly Ash-Cement Mortar

Fly ash (FA) has been widely used in cement-based materials, but limited work has been conducted to establish the relationship between the compressive strength and hydration process of high-volume FA (HVFA)-cement-based material. In this study, the compressive strength and chemically bound water con...

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Autores principales:	Chunping Gu, Jikai Yao, Yang Yang, Jie Huang, Linhao Ma, Tongyuan Ni, Jintao Liu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	high-volume fly ash-cement-based material compressive strength chemically bound water content Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/24e93edd022b45eeba69a5efd9563734
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spelling	oai:doaj.org-article:24e93edd022b45eeba69a5efd95637342021-11-11T17:51:43ZThe Relationship of Compressive Strength and Chemically Bound Water Content of High-Volume Fly Ash-Cement Mortar10.3390/ma142162731996-1944https://doaj.org/article/24e93edd022b45eeba69a5efd95637342021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6273https://doaj.org/toc/1996-1944Fly ash (FA) has been widely used in cement-based materials, but limited work has been conducted to establish the relationship between the compressive strength and hydration process of high-volume FA (HVFA)-cement-based material. In this study, the compressive strength and chemically bound water contents of FA-cement-based materials with different water-to-binder ratios (0.4, 0.5, and 0.6) and FA contents (0%, 30%, 40%, 50%, 60%, and 70%) were tested. Replacing more cement with FA reduced the compressive strength and of HVFA-cement-based materials. The compressive strength and chemically bound water content reduced by about 60–70% when 70% cement was replaced by FA. Water-to-binder ratio showed more significant influence on the chemically bonded water at later ages than that at early ages. Based on test results, the prediction equation of chemically bound water content was established, and its accuracy was verified. The error was less than 10%. The relationship between the compressive strength and chemically bound water content was also fitted. The compressive strength and chemically bound water content showed linear relationships for different water-to-binder ratios, hence the compressive strength of HVFA-cement mortar could be predicted with the chemically bound water content and water-to-binder ratios. The results of this study could be used for the prediction of the compressive strength development of HVFA-cement mortars, and is helpful to develop the mix design method of HVFA-cement-based materials.Chunping GuJikai YaoYang YangJie HuangLinhao MaTongyuan NiJintao LiuMDPI AGarticlehigh-volume fly ash-cement-based materialcompressive strengthchemically bound water contentTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6273, p 6273 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	high-volume fly ash-cement-based material compressive strength chemically bound water content Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	high-volume fly ash-cement-based material compressive strength chemically bound water content Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Chunping Gu Jikai Yao Yang Yang Jie Huang Linhao Ma Tongyuan Ni Jintao Liu The Relationship of Compressive Strength and Chemically Bound Water Content of High-Volume Fly Ash-Cement Mortar
description	Fly ash (FA) has been widely used in cement-based materials, but limited work has been conducted to establish the relationship between the compressive strength and hydration process of high-volume FA (HVFA)-cement-based material. In this study, the compressive strength and chemically bound water contents of FA-cement-based materials with different water-to-binder ratios (0.4, 0.5, and 0.6) and FA contents (0%, 30%, 40%, 50%, 60%, and 70%) were tested. Replacing more cement with FA reduced the compressive strength and of HVFA-cement-based materials. The compressive strength and chemically bound water content reduced by about 60–70% when 70% cement was replaced by FA. Water-to-binder ratio showed more significant influence on the chemically bonded water at later ages than that at early ages. Based on test results, the prediction equation of chemically bound water content was established, and its accuracy was verified. The error was less than 10%. The relationship between the compressive strength and chemically bound water content was also fitted. The compressive strength and chemically bound water content showed linear relationships for different water-to-binder ratios, hence the compressive strength of HVFA-cement mortar could be predicted with the chemically bound water content and water-to-binder ratios. The results of this study could be used for the prediction of the compressive strength development of HVFA-cement mortars, and is helpful to develop the mix design method of HVFA-cement-based materials.
format	article
author	Chunping Gu Jikai Yao Yang Yang Jie Huang Linhao Ma Tongyuan Ni Jintao Liu
author_facet	Chunping Gu Jikai Yao Yang Yang Jie Huang Linhao Ma Tongyuan Ni Jintao Liu
author_sort	Chunping Gu
title	The Relationship of Compressive Strength and Chemically Bound Water Content of High-Volume Fly Ash-Cement Mortar
title_short	The Relationship of Compressive Strength and Chemically Bound Water Content of High-Volume Fly Ash-Cement Mortar
title_full	The Relationship of Compressive Strength and Chemically Bound Water Content of High-Volume Fly Ash-Cement Mortar
title_fullStr	The Relationship of Compressive Strength and Chemically Bound Water Content of High-Volume Fly Ash-Cement Mortar
title_full_unstemmed	The Relationship of Compressive Strength and Chemically Bound Water Content of High-Volume Fly Ash-Cement Mortar
title_sort	relationship of compressive strength and chemically bound water content of high-volume fly ash-cement mortar
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/24e93edd022b45eeba69a5efd9563734
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The Relationship of Compressive Strength and Chemically Bound Water Content of High-Volume Fly Ash-Cement Mortar

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