Durability and corrosion resistance of ultra-high performance concretes for repair

被引：10
|
作者：
Looney, Trevor [1 ]
Leggs, Maranda [2 ]
Volz, Jeffery [2 ]
Floyd, Royce [2 ]
机构：
[1] US Army Engineer Res & Dev Ctr, Geotech & Struct Lab, 3909 Halls Ferry Rd, Vicksburg, MS 39180 USA
[2] Univ Oklahoma, Sch Civil Engn & Environm Sci, 202 W Boyd St, Room 334, Norman, OK 73019 USA
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2022年 / 345卷
关键词：
Ultra-high performance concrete; Durability; Corrosion; Halo effect; CEMENT;
D O I：
10.1016/j.conbuildmat.2022.128238
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The purpose of this study was to evaluate a proprietary (PUHPC) and non-proprietary (NPUHPC) UHPC mix for chloride ion penetration, freeze-thaw resistance, and scaling resistance to assess durability. Also, large-scale specimens were subjected to an impressed current to accelerate corrosion of embedded reinforcing steel to evaluate the severity of the potential for halo effect when using each concrete as a repair material for aged concrete. Each of the UHPC mixes outperformed conventional concrete in every test. Also, the PUHPC and NPUHPC had similar durability performance, and the NPUHPC outperformed the PUHPC in corrosion resistance, despite having a lower compressive strength.
引用
收藏
页数：12
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