Reinforced Concrete Slabs Strengthened with Carbon Textile Grid and Cementitious Grout

被引：0
|
作者：
Kim, Hyeong-Yeol [1 ]
You, Young-Jun [1 ]
Ryu, Gum-Sung [1 ]
机构：
[1] Korea Inst Civil Engn & Bldg Technol KICT, Struct Engn Dept, Goyang Si 10223, South Korea
来源：
MATERIALS | 2021年 / 14卷 / 17期
关键词：
carbon textile; cementitious grout; concrete structure; flexural strengthening; textile reinforced concrete (TRC); fabric reinforced cementitious matrix (FRCM); structural testing; RC BEAMS; ANCHORAGE;
D O I：
10.3390/ma14175046
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A textile reinforced concrete (TRC) system has been widely used for repair and strengthening of deteriorated reinforced concrete (RC) structures. This paper proposes an accelerated on-site installation method of a TRC system by grouting to strengthen deteriorated RC structures. Four RC slabs were strengthened with one ply of carbon textile grid and 20 mm-thick cementitious grout. The TRC strengthened slab specimens were tested under flexure and the test results were compared with those of an unstrengthened specimen and theoretical solutions. Furthermore, the TRC strengthened specimens experienced longer plastic deformation after steel yield than the unstrengthened specimen. The TRC strengthened specimens exhibited many fine cracks and finally failed by rupture of the textile. Therefore, TRC system with the proposed installation method can effectively be used for strengthening of deteriorated RC structural elements. The theoretically computed steel yield and ultimate loads overestimate the test data by 11% and 5%, respectively.
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页数：15
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