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1.湘潭大学 土木工程学院,湖南 湘潭 411105
2.材料动载行为与工程韧性湖南省高校重点实验室,湖南 湘潭 411105
3.中国建筑第五工程局有限公司,湖南 长沙 410004
Received:13 October 2025,
Revised:2026-01-24,
Accepted:31 January 2026,
Published:25 March 2026
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邓代强,胡圳,许福,李水生,曹国栋,李新星.UHPC加固修复复合试件界面黏结性能影响因素研究[J].新疆大学学报(自然科学版中英文),2026,43(2):208-222.
Deng Daiqiang,Hu Zhen,Xu Fu,Li Shuisheng,Cao Guodong,Li Xinxing.Study on factors affecting the bonding performance at the interface of UHPC composite repair specimens[J].Journal of Xinjiang University(Natural Science Edition in Chinese and English),2026,43(2):208-222.
邓代强,胡圳,许福,李水生,曹国栋,李新星.UHPC加固修复复合试件界面黏结性能影响因素研究[J].新疆大学学报(自然科学版中英文),2026,43(2):208-222. DOI: 10.13568/j.cnki.651094.651316.2025.10.13.0001.
Deng Daiqiang,Hu Zhen,Xu Fu,Li Shuisheng,Cao Guodong,Li Xinxing.Study on factors affecting the bonding performance at the interface of UHPC composite repair specimens[J].Journal of Xinjiang University(Natural Science Edition in Chinese and English),2026,43(2):208-222. DOI: 10.13568/j.cnki.651094.651316.2025.10.13.0001.
超高性能混凝土(Ultra-High-Performance Concrete, UHPC)与既有混凝土基体之间的界面黏结性能是结构加固与修复的关键因素.本文通过试验,研究破坏形态、基体强度、界面粗糙度、养护龄期等因素对劈裂抗拉与双面剪切强度的影响,并分析界面粗糙度组的微观机理.结果表明:破坏形态以界面剥离为主;基体强度、养护龄期的增加可显著提高界面黏结强度;界面黏结强度随着界面粗糙度的增大而持续提升,但在RO2之后趋于稳定;顶面浇筑有助于形成比侧面浇筑更高的黏结强度;RO2组通过适度粗糙度平衡机械咬合与化学结合,形成致密界面过渡区,有效提升界面黏结性能.
The bonding performance between UHPC (ultra-high-performance concrete) and existing concrete substrates is a critical factor in structural reinforcement and repair. This study experimentally investigates the effects of failure mode
matrix strength
interfacial roughness
and curing age on splitting tensile strength and double-sided shear strength
while analyzing the micro-mechanisms of the interfacial roughness group. Results indicate that: failure primarily occurs through interfacial delamination; increased matrix strength and curing age significantly enhance interfacial bond strength; interfacial bond strength continuously increases with rising interfacial roughness but stabilizes beyond RO2; top-pouring methods yield higher bond strength than side-pouring; the RO2 group achieves optimal interfacial bonding performance by balancing mechanical interlocking and chemical bonding through moderate roughness
forming a dense interfacial transition zone.
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