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Effect of Maintenance and Water–Cement Ratio on Foamed Concrete Shrinkage Cracking

This is a study on how to reduce shrinkage and improve crack resistance of foamed concrete. By selecting different curing temperatures and humidity, six different curing conditions were analyzed. The shrinkage deformation and maximum crack width of foamed concrete blocks with water–cement ratios of...

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Detalles Bibliográficos
Autores principales: Li, Chunbao, Li, Xiaotian, Li, Shen, Guan, Di, Xiao, Chang, Xu, Yanyan, Soloveva, Valentina Y., Dalerjon, Hojiboev, Qin, Pengju, Liu, Xiaohui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9269024/
https://www.ncbi.nlm.nih.gov/pubmed/35808749
http://dx.doi.org/10.3390/polym14132703
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author Li, Chunbao
Li, Xiaotian
Li, Shen
Guan, Di
Xiao, Chang
Xu, Yanyan
Soloveva, Valentina Y.
Dalerjon, Hojiboev
Qin, Pengju
Liu, Xiaohui
author_facet Li, Chunbao
Li, Xiaotian
Li, Shen
Guan, Di
Xiao, Chang
Xu, Yanyan
Soloveva, Valentina Y.
Dalerjon, Hojiboev
Qin, Pengju
Liu, Xiaohui
author_sort Li, Chunbao
collection PubMed
description This is a study on how to reduce shrinkage and improve crack resistance of foamed concrete. By selecting different curing temperatures and humidity, six different curing conditions were analyzed. The shrinkage deformation and maximum crack width of foamed concrete blocks with water–cement ratios of 0.4 and 0.5, under six curing conditions, were measured by a comparator and optical microscope, and the cracking time was recorded. The effects of curing temperature, humidity and water–cement ratio on the shrinkage and crack resistance of the foamed concrete were analyzed by comparing the experimental results of each group. We studied the primary and secondary order of the three factors affecting the drying shrinkage of foamed concrete. The results show that: temperature is the primary factor that changes the drying shrinkage performance of foamed concrete, followed by the water–cement ratio, and finally humidity. The interaction of these three factors is not obvious. The shrinkage of foamed concrete increases with the increase in temperature; increasing the humidity of curing can control the water loss rate of foamed concrete and reduce shrinkage. Lower humidity and higher temperature will make cracks appear earlier; with an increase in the water–cement ratio, the initial cracking time is shortened and the cracking property of foamed concrete is improved.
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spelling pubmed-92690242022-07-09 Effect of Maintenance and Water–Cement Ratio on Foamed Concrete Shrinkage Cracking Li, Chunbao Li, Xiaotian Li, Shen Guan, Di Xiao, Chang Xu, Yanyan Soloveva, Valentina Y. Dalerjon, Hojiboev Qin, Pengju Liu, Xiaohui Polymers (Basel) Article This is a study on how to reduce shrinkage and improve crack resistance of foamed concrete. By selecting different curing temperatures and humidity, six different curing conditions were analyzed. The shrinkage deformation and maximum crack width of foamed concrete blocks with water–cement ratios of 0.4 and 0.5, under six curing conditions, were measured by a comparator and optical microscope, and the cracking time was recorded. The effects of curing temperature, humidity and water–cement ratio on the shrinkage and crack resistance of the foamed concrete were analyzed by comparing the experimental results of each group. We studied the primary and secondary order of the three factors affecting the drying shrinkage of foamed concrete. The results show that: temperature is the primary factor that changes the drying shrinkage performance of foamed concrete, followed by the water–cement ratio, and finally humidity. The interaction of these three factors is not obvious. The shrinkage of foamed concrete increases with the increase in temperature; increasing the humidity of curing can control the water loss rate of foamed concrete and reduce shrinkage. Lower humidity and higher temperature will make cracks appear earlier; with an increase in the water–cement ratio, the initial cracking time is shortened and the cracking property of foamed concrete is improved. MDPI 2022-07-01 /pmc/articles/PMC9269024/ /pubmed/35808749 http://dx.doi.org/10.3390/polym14132703 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Li, Chunbao
Li, Xiaotian
Li, Shen
Guan, Di
Xiao, Chang
Xu, Yanyan
Soloveva, Valentina Y.
Dalerjon, Hojiboev
Qin, Pengju
Liu, Xiaohui
Effect of Maintenance and Water–Cement Ratio on Foamed Concrete Shrinkage Cracking
title Effect of Maintenance and Water–Cement Ratio on Foamed Concrete Shrinkage Cracking
title_full Effect of Maintenance and Water–Cement Ratio on Foamed Concrete Shrinkage Cracking
title_fullStr Effect of Maintenance and Water–Cement Ratio on Foamed Concrete Shrinkage Cracking
title_full_unstemmed Effect of Maintenance and Water–Cement Ratio on Foamed Concrete Shrinkage Cracking
title_short Effect of Maintenance and Water–Cement Ratio on Foamed Concrete Shrinkage Cracking
title_sort effect of maintenance and water–cement ratio on foamed concrete shrinkage cracking
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9269024/
https://www.ncbi.nlm.nih.gov/pubmed/35808749
http://dx.doi.org/10.3390/polym14132703
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