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Residual Mechanical Properties of Ultra-High Performance Concrete Doped with Copolymer Formaldehyde Fiber Exposed to High Temperature
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Yuexiao HE1, Weirong HUANG1, Jiangchuan GUO1, Hang CHEN2, Maohao YAN2, Jiao WANG2
Journal of the Chinese Ceramic Society | 2022, 50(3) : 839 - 848
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Journal of the Chinese Ceramic Society | 2022, 50(3): 839-848
• Research Articles •
Residual Mechanical Properties of Ultra-High Performance Concrete Doped with Copolymer Formaldehyde Fiber Exposed to High Temperature
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Yuexiao HE1, Weirong HUANG1, Jiangchuan GUO1, Hang CHEN2, Maohao YAN2, Jiao WANG2
Affiliations
  • 1.School of Material Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
  • 2.School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China

    • HE Yuexiao (1997-), male, Master candidate. E-mail:

About Author:

HE Yuexiao (1997-), male, Master candidate. E-mail:

Published: 2022-03-20 doi: 10.14062/j.issn.0454-5648.20210785
Outline
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The residual mechanical properties and microstructure of UHPC mixed with 6, 8, 12 mm copolymer formaldehyde fiber and steel fiber after high temperature were studied. The test results show that at 400 ℃, only plain concrete bursts. At 500 ℃, the steel fiber UHPC specimen burst, while the UHPC specimen with single copolymer formaldehyde fiber and mixed with two kinds of fiber can still maintain relatively integrity, and the latter has higher residual strength at high temperature. SEM and pore structure show that the copolymer formaldehyde fiber in UHPC can be closely bonded to the matrix after steam curing at high temperature. The pore formed by fiber melting at 165 ℃ can effectively relieve and release steam pressure, keep the concrete matrix intact and prevent it from cracking at 500 ℃. The research results reveal the mechanism of the copolymer formaldehyde fiber on the high temperature performance of concrete, which has great reference value for its application in UHPC.

copolymer formaldehyde fiber  /  ultra-high performance concrete  /  residual mechanical properties  /  high temperature performance
何越骁, 黄维蓉, 郭江川, 陈行, 晏茂豪, 王娇. 共聚甲醛纤维超高性能混凝土高温后残余力学性能. 硅酸盐学报, 2022 , 50 (3) : 839 -848 . DOI: 10.14062/j.issn.0454-5648.20210785
Yuexiao HE, Weirong HUANG, Jiangchuan GUO, Hang CHEN, Maohao YAN, Jiao WANG. Residual Mechanical Properties of Ultra-High Performance Concrete Doped with Copolymer Formaldehyde Fiber Exposed to High Temperature[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (3) : 839 -848 . DOI: 10.14062/j.issn.0454-5648.20210785
Appendix
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Year 2022 volume 50 Issue 3
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Article Info
doi: 10.14062/j.issn.0454-5648.20210785
  • Receive Date：2021-09-07
  • Online Date：2026-10-22
  • Published：2022-03-20
Article Data
Affiliations
History
  • Received：2021-09-07
  • Revised：2021-10-28
Funding
Affiliations
    1.School of Material Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China
    2.School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China

Corresponding:

HUANG Weirong (1970-), female, Master, Professor.
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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