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Effects of Fiber and Surface Treatment on Airport Pavement Concrete against Freeze–Thawing and Salt Freezing

Airport pavement concrete often suffers from freeze–thawing damage in high latitude and cold areas. In addition, the use of aircraft deicer makes the airport pavement concrete suffer from salt-freezing damage. To improve the durability of airport pavement concrete, modified polyester synthetic fiber...

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Autores principales: Xu, Lei, Lai, Yong, Ma, Daoxun, Wang, Junjie, Li, Molan, Li, Le, Gao, Zhibin, Liu, Yan, He, Pukang, Zhang, Yi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9655486/
https://www.ncbi.nlm.nih.gov/pubmed/36363120
http://dx.doi.org/10.3390/ma15217528
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author Xu, Lei
Lai, Yong
Ma, Daoxun
Wang, Junjie
Li, Molan
Li, Le
Gao, Zhibin
Liu, Yan
He, Pukang
Zhang, Yi
author_facet Xu, Lei
Lai, Yong
Ma, Daoxun
Wang, Junjie
Li, Molan
Li, Le
Gao, Zhibin
Liu, Yan
He, Pukang
Zhang, Yi
author_sort Xu, Lei
collection PubMed
description Airport pavement concrete often suffers from freeze–thawing damage in high latitude and cold areas. In addition, the use of aircraft deicer makes the airport pavement concrete suffer from salt-freezing damage. To improve the durability of airport pavement concrete, modified polyester synthetic fiber (FC), cellulose fiber (CF), and basalt fiber (BF) reinforced concrete were prepared in this paper. The mechanical strength, pore structure, and frost resistance (freeze–thawing and salt freezing) of fiber-reinforced concrete were investigated. The effects of the combined action of fiber (fiber type and content) and surface treatment methods (spraying silane and impregnating silane) on the frost resistance of concrete were investigated. The results show that the flexural strength of concrete is positively correlated with the elastic modulus of fiber, but has little effect on the compressive strength. Fiber can reduce mass loss and dynamic modulus loss of concrete subjected to frost damage. FC more effectively improved the frost resistance of concrete than CF. After 30 cycles of salt freezing, the spalling amount of concrete sprayed or soaked with silane was decreased by 65.5% and 55.5%, respectively. Adding fiber and impregnating silane reduced the spalled concrete by up to 70.5%. Spraying silane treatment is better than impregnating silane treatment in enhancing the frost resistance of concrete because a better silane condensation reaction is achieved with spraying silane.
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spelling pubmed-96554862022-11-15 Effects of Fiber and Surface Treatment on Airport Pavement Concrete against Freeze–Thawing and Salt Freezing Xu, Lei Lai, Yong Ma, Daoxun Wang, Junjie Li, Molan Li, Le Gao, Zhibin Liu, Yan He, Pukang Zhang, Yi Materials (Basel) Article Airport pavement concrete often suffers from freeze–thawing damage in high latitude and cold areas. In addition, the use of aircraft deicer makes the airport pavement concrete suffer from salt-freezing damage. To improve the durability of airport pavement concrete, modified polyester synthetic fiber (FC), cellulose fiber (CF), and basalt fiber (BF) reinforced concrete were prepared in this paper. The mechanical strength, pore structure, and frost resistance (freeze–thawing and salt freezing) of fiber-reinforced concrete were investigated. The effects of the combined action of fiber (fiber type and content) and surface treatment methods (spraying silane and impregnating silane) on the frost resistance of concrete were investigated. The results show that the flexural strength of concrete is positively correlated with the elastic modulus of fiber, but has little effect on the compressive strength. Fiber can reduce mass loss and dynamic modulus loss of concrete subjected to frost damage. FC more effectively improved the frost resistance of concrete than CF. After 30 cycles of salt freezing, the spalling amount of concrete sprayed or soaked with silane was decreased by 65.5% and 55.5%, respectively. Adding fiber and impregnating silane reduced the spalled concrete by up to 70.5%. Spraying silane treatment is better than impregnating silane treatment in enhancing the frost resistance of concrete because a better silane condensation reaction is achieved with spraying silane. MDPI 2022-10-27 /pmc/articles/PMC9655486/ /pubmed/36363120 http://dx.doi.org/10.3390/ma15217528 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
Xu, Lei
Lai, Yong
Ma, Daoxun
Wang, Junjie
Li, Molan
Li, Le
Gao, Zhibin
Liu, Yan
He, Pukang
Zhang, Yi
Effects of Fiber and Surface Treatment on Airport Pavement Concrete against Freeze–Thawing and Salt Freezing
title Effects of Fiber and Surface Treatment on Airport Pavement Concrete against Freeze–Thawing and Salt Freezing
title_full Effects of Fiber and Surface Treatment on Airport Pavement Concrete against Freeze–Thawing and Salt Freezing
title_fullStr Effects of Fiber and Surface Treatment on Airport Pavement Concrete against Freeze–Thawing and Salt Freezing
title_full_unstemmed Effects of Fiber and Surface Treatment on Airport Pavement Concrete against Freeze–Thawing and Salt Freezing
title_short Effects of Fiber and Surface Treatment on Airport Pavement Concrete against Freeze–Thawing and Salt Freezing
title_sort effects of fiber and surface treatment on airport pavement concrete against freeze–thawing and salt freezing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9655486/
https://www.ncbi.nlm.nih.gov/pubmed/36363120
http://dx.doi.org/10.3390/ma15217528
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