Evaluation of early-age thermal cracking resistance of high w/b, high volume fly ash (HVFA) concrete using temperature stress testing machine

Fly ash (FA) is an environmentally hazardous industrial solid waste. High FA replacement levels on properties of concrete with low w/b have been widely investigated, however, studies on the thermal cracking behavior of HVFA concrete with high w/b are lacking. This paper investigated the effect of hi...

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Autores principales:	Jianda Xin, Yi Liu, Guoxin Zhang, Zhenhong Wang, Juan Wang, Ning Yang, Yu Qiao
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	High volume fly ash Mechanical properties Thermal cracking resistance High w/b Temperature stress testing machine Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/05ea647c28b445cdbe2b4e4638199a30
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id	oai:doaj.org-article:05ea647c28b445cdbe2b4e4638199a30
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spelling	oai:doaj.org-article:05ea647c28b445cdbe2b4e4638199a302021-12-02T05:01:39ZEvaluation of early-age thermal cracking resistance of high w/b, high volume fly ash (HVFA) concrete using temperature stress testing machine2214-509510.1016/j.cscm.2021.e00825https://doaj.org/article/05ea647c28b445cdbe2b4e4638199a302022-06-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214509521003405https://doaj.org/toc/2214-5095Fly ash (FA) is an environmentally hazardous industrial solid waste. High FA replacement levels on properties of concrete with low w/b have been widely investigated, however, studies on the thermal cracking behavior of HVFA concrete with high w/b are lacking. This paper investigated the effect of high volume fly ash (HVFA) on mechanical properties and thermal cracking resistance of concrete with a high w/b of 0.45 using temperature stress testing machine (TSTM). An adiabatic curing condition during the temperature rise stage and a rapid cooling during the temperature drop stage were applied on test specimens. The effectiveness of concrete with different FA replacement levels (0%, 20%, 50% and 80%) on the thermal cracking potential of concrete under a restraint degree of 100% has been addressed. Results showed that the mechanical properties of concrete mixture decreased with the increasing FA replacement level; the ratio of creep-to-free strain (i.e., relaxation behavior) of concrete mixture decreased when the FA replacement level reached 20%, and converted to increase for the FA replacement level ranging from 50% to 80%; FA replacement level with 50% showed a desirable effect on the thermal cracking resistance enhancement of high w/b concrete mixture regarding restrained cracking control.Jianda XinYi LiuGuoxin ZhangZhenhong WangJuan WangNing YangYu QiaoElsevierarticleHigh volume fly ashMechanical propertiesThermal cracking resistanceHigh w/bTemperature stress testing machineMaterials of engineering and construction. Mechanics of materialsTA401-492ENCase Studies in Construction Materials, Vol 16, Iss , Pp e00825- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	High volume fly ash Mechanical properties Thermal cracking resistance High w/b Temperature stress testing machine Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	High volume fly ash Mechanical properties Thermal cracking resistance High w/b Temperature stress testing machine Materials of engineering and construction. Mechanics of materials TA401-492 Jianda Xin Yi Liu Guoxin Zhang Zhenhong Wang Juan Wang Ning Yang Yu Qiao Evaluation of early-age thermal cracking resistance of high w/b, high volume fly ash (HVFA) concrete using temperature stress testing machine
description	Fly ash (FA) is an environmentally hazardous industrial solid waste. High FA replacement levels on properties of concrete with low w/b have been widely investigated, however, studies on the thermal cracking behavior of HVFA concrete with high w/b are lacking. This paper investigated the effect of high volume fly ash (HVFA) on mechanical properties and thermal cracking resistance of concrete with a high w/b of 0.45 using temperature stress testing machine (TSTM). An adiabatic curing condition during the temperature rise stage and a rapid cooling during the temperature drop stage were applied on test specimens. The effectiveness of concrete with different FA replacement levels (0%, 20%, 50% and 80%) on the thermal cracking potential of concrete under a restraint degree of 100% has been addressed. Results showed that the mechanical properties of concrete mixture decreased with the increasing FA replacement level; the ratio of creep-to-free strain (i.e., relaxation behavior) of concrete mixture decreased when the FA replacement level reached 20%, and converted to increase for the FA replacement level ranging from 50% to 80%; FA replacement level with 50% showed a desirable effect on the thermal cracking resistance enhancement of high w/b concrete mixture regarding restrained cracking control.
format	article
author	Jianda Xin Yi Liu Guoxin Zhang Zhenhong Wang Juan Wang Ning Yang Yu Qiao
author_facet	Jianda Xin Yi Liu Guoxin Zhang Zhenhong Wang Juan Wang Ning Yang Yu Qiao
author_sort	Jianda Xin
title	Evaluation of early-age thermal cracking resistance of high w/b, high volume fly ash (HVFA) concrete using temperature stress testing machine
title_short	Evaluation of early-age thermal cracking resistance of high w/b, high volume fly ash (HVFA) concrete using temperature stress testing machine
title_full	Evaluation of early-age thermal cracking resistance of high w/b, high volume fly ash (HVFA) concrete using temperature stress testing machine
title_fullStr	Evaluation of early-age thermal cracking resistance of high w/b, high volume fly ash (HVFA) concrete using temperature stress testing machine
title_full_unstemmed	Evaluation of early-age thermal cracking resistance of high w/b, high volume fly ash (HVFA) concrete using temperature stress testing machine
title_sort	evaluation of early-age thermal cracking resistance of high w/b, high volume fly ash (hvfa) concrete using temperature stress testing machine
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/05ea647c28b445cdbe2b4e4638199a30
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Evaluation of early-age thermal cracking resistance of high w/b, high volume fly ash (HVFA) concrete using temperature stress testing machine

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