Abstract
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.
Highlights
Grid and Cementitious Grout.Textile grid reinforcement has been widely used for repair and strengthening of deteriorated reinforced concrete (RC) structures [1,2,3]
textile reinforced concrete (TRC) system with the proposed installation method can effectively be used for strengthening of deteriorated RC structural elements
Precast TRC panel with grout involves the use of a 81.6 precast
Summary
Textile grid reinforcement has been widely used for repair and strengthening of deteriorated reinforced concrete (RC) structures [1,2,3]. The textile grid is generally integrated with a cementitious binder to form a composite material. If the cementitious binder contains coarse aggregates, we refer to it as Textile Reinforced Concrete (TRC). If cementitious mortar with no coarse aggregates is used, we refer to it as Textile Reinforced. TRM and TRC are referred to as Fabric Reinforced Cementitious Matrix (FRCM) in the literature [4]
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