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Effect of Ambient Temperature on the Mechanical Properties of High Ductility Concrete
This study analyzes the mechanical properties of high ductility concrete (HDC) under different ambient temperatures to provide a parameter basis for the design of HDC bridge deck link slabs. Five temperatures (−30, 0, 20, 40, and 60 °C) were designed to investigate the compressive, tensile, and flex...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10058089/ https://www.ncbi.nlm.nih.gov/pubmed/36984344 http://dx.doi.org/10.3390/ma16062465 |
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author | Chai, Lijuan Chen, Bo Guo, Liping Ren, Biaokun Chen, Zhichun Huang, Tianyong |
author_facet | Chai, Lijuan Chen, Bo Guo, Liping Ren, Biaokun Chen, Zhichun Huang, Tianyong |
author_sort | Chai, Lijuan |
collection | PubMed |
description | This study analyzes the mechanical properties of high ductility concrete (HDC) under different ambient temperatures to provide a parameter basis for the design of HDC bridge deck link slabs. Five temperatures (−30, 0, 20, 40, and 60 °C) were designed to investigate the compressive, tensile, and flexural properties of HDC after temperature treatment and analyze the pore structure. The results show that, compared with the HDC performance at room temperature (20 °C), the compressive strength, ultimate tensile strength, and flexural strength decreased after treatment at low temperatures (−30 and 0 °C), while the strength increased after treatment at high temperatures (40 and 60 °C). After experiencing low- and high-temperature treatments, the ultimate tensile strain and ultimate deflection of the HDC increased. The tensile and flexural failures of the HDC exhibited multiple cracking, and the stress–strain/deflection curve showed a strain/deflection hardening stage. The tensile constitutive relationship can be simplified as a bilinear two-stage relationship. As the temperature increased, the porosity of harmless and less harmful pores in HDC gradually increased, while the porosity of harmful and more harmful pores gradually decreased, resulting in an increase in HDC strength. Based on the influence of temperature on HDC properties, design parameters for the HDC bridge deck link slab structure are proposed. |
format | Online Article Text |
id | pubmed-10058089 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-100580892023-03-30 Effect of Ambient Temperature on the Mechanical Properties of High Ductility Concrete Chai, Lijuan Chen, Bo Guo, Liping Ren, Biaokun Chen, Zhichun Huang, Tianyong Materials (Basel) Article This study analyzes the mechanical properties of high ductility concrete (HDC) under different ambient temperatures to provide a parameter basis for the design of HDC bridge deck link slabs. Five temperatures (−30, 0, 20, 40, and 60 °C) were designed to investigate the compressive, tensile, and flexural properties of HDC after temperature treatment and analyze the pore structure. The results show that, compared with the HDC performance at room temperature (20 °C), the compressive strength, ultimate tensile strength, and flexural strength decreased after treatment at low temperatures (−30 and 0 °C), while the strength increased after treatment at high temperatures (40 and 60 °C). After experiencing low- and high-temperature treatments, the ultimate tensile strain and ultimate deflection of the HDC increased. The tensile and flexural failures of the HDC exhibited multiple cracking, and the stress–strain/deflection curve showed a strain/deflection hardening stage. The tensile constitutive relationship can be simplified as a bilinear two-stage relationship. As the temperature increased, the porosity of harmless and less harmful pores in HDC gradually increased, while the porosity of harmful and more harmful pores gradually decreased, resulting in an increase in HDC strength. Based on the influence of temperature on HDC properties, design parameters for the HDC bridge deck link slab structure are proposed. MDPI 2023-03-20 /pmc/articles/PMC10058089/ /pubmed/36984344 http://dx.doi.org/10.3390/ma16062465 Text en © 2023 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 Chai, Lijuan Chen, Bo Guo, Liping Ren, Biaokun Chen, Zhichun Huang, Tianyong Effect of Ambient Temperature on the Mechanical Properties of High Ductility Concrete |
title | Effect of Ambient Temperature on the Mechanical Properties of High Ductility Concrete |
title_full | Effect of Ambient Temperature on the Mechanical Properties of High Ductility Concrete |
title_fullStr | Effect of Ambient Temperature on the Mechanical Properties of High Ductility Concrete |
title_full_unstemmed | Effect of Ambient Temperature on the Mechanical Properties of High Ductility Concrete |
title_short | Effect of Ambient Temperature on the Mechanical Properties of High Ductility Concrete |
title_sort | effect of ambient temperature on the mechanical properties of high ductility concrete |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10058089/ https://www.ncbi.nlm.nih.gov/pubmed/36984344 http://dx.doi.org/10.3390/ma16062465 |
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