A multiscale model for predicting the coefficient of thermal expansion of concrete

The coefficient of thermal expansion (CTE) of concrete is one of the important properties that are responsible for the thermal cracking of concrete structures. To reveal the essence of thermal expansion and predict the CTE accurately, this paper establishes a multiscale model for predicting the drai...

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Autor principal:	Xiuli Cao
Formato:	article
Lenguaje:	EN
Publicado:	AIP Publishing LLC 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/e3473245f790471f9a17e363d8fd79cd
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spelling	oai:doaj.org-article:e3473245f790471f9a17e363d8fd79cd2021-12-01T18:52:06ZA multiscale model for predicting the coefficient of thermal expansion of concrete2158-322610.1063/5.0071677https://doaj.org/article/e3473245f790471f9a17e363d8fd79cd2021-11-01T00:00:00Zhttp://dx.doi.org/10.1063/5.0071677https://doaj.org/toc/2158-3226The coefficient of thermal expansion (CTE) of concrete is one of the important properties that are responsible for the thermal cracking of concrete structures. To reveal the essence of thermal expansion and predict the CTE accurately, this paper establishes a multiscale model for predicting the drained and undrained CTEs of concrete according to the microstructure based on the theory of continuum micromechanics. The microstructure of concrete is quantitatively analyzed according to the raw materials and degree of hydration. The CTEs are homogenized level by level from calcium silicate hydrate to cement paste, cement mortar, and concrete. Given the initial information of concrete, the CTEs can be predicted by the model. The experimental data of concrete from the literature validated the applicability of the proposed model. The influence mechanism of factors on CTEs can be explained by the influence on the microstructure of concrete. The model has good potential in optimizing the material design of concrete to obtain a lower CTE to minimize the risk of thermal cracking.Xiuli CaoAIP Publishing LLCarticlePhysicsQC1-999ENAIP Advances, Vol 11, Iss 11, Pp 115313-115313-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Xiuli Cao A multiscale model for predicting the coefficient of thermal expansion of concrete
description	The coefficient of thermal expansion (CTE) of concrete is one of the important properties that are responsible for the thermal cracking of concrete structures. To reveal the essence of thermal expansion and predict the CTE accurately, this paper establishes a multiscale model for predicting the drained and undrained CTEs of concrete according to the microstructure based on the theory of continuum micromechanics. The microstructure of concrete is quantitatively analyzed according to the raw materials and degree of hydration. The CTEs are homogenized level by level from calcium silicate hydrate to cement paste, cement mortar, and concrete. Given the initial information of concrete, the CTEs can be predicted by the model. The experimental data of concrete from the literature validated the applicability of the proposed model. The influence mechanism of factors on CTEs can be explained by the influence on the microstructure of concrete. The model has good potential in optimizing the material design of concrete to obtain a lower CTE to minimize the risk of thermal cracking.
format	article
author	Xiuli Cao
author_facet	Xiuli Cao
author_sort	Xiuli Cao
title	A multiscale model for predicting the coefficient of thermal expansion of concrete
title_short	A multiscale model for predicting the coefficient of thermal expansion of concrete
title_full	A multiscale model for predicting the coefficient of thermal expansion of concrete
title_fullStr	A multiscale model for predicting the coefficient of thermal expansion of concrete
title_full_unstemmed	A multiscale model for predicting the coefficient of thermal expansion of concrete
title_sort	multiscale model for predicting the coefficient of thermal expansion of concrete
publisher	AIP Publishing LLC
publishDate	2021
url	https://doaj.org/article/e3473245f790471f9a17e363d8fd79cd
work_keys_str_mv	AT xiulicao amultiscalemodelforpredictingthecoefficientofthermalexpansionofconcrete AT xiulicao multiscalemodelforpredictingthecoefficientofthermalexpansionofconcrete
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A multiscale model for predicting the coefficient of thermal expansion of concrete

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