A preliminary study of RPC for repair and retrofitting materials |
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| Authors: | Ming‐Gin Lee Yu‐Cheng Kan Kuei‐Ching Chen |
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| Affiliation: | 1. Department of Construction Engineering , Chaoyang University of Technology , Taichung, Taiwan 413, R.O.C. Phone: 886–4–2332–3000 Fax: 886–4–2332–3000 E-mail: mglee@mail.cyut.edu.tw;2. Department of Construction Engineering , Chaoyang University of Technology , Taichung, Taiwan 413, R.O.C.;3. Center of Harbor &4. Marine Technology , Taichung, Taiwan 435, R.O.C. |
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| Abstract: | Abstract This study aims to assess the performances of reactive powder concrete, RPC, as a new repair and retrofitting material and evaluate its durability in concrete members. One accelerated aging environment, namely a freeze‐thaw cycle acceleration deterioration test, was selected for the durability study of the repair materials. Before and after aging, the samples were evaluated by the bond strength (slant shear test), rebar pull out strength, and relative dynamic modulus NDT tests. The test results show that the RPC displayed excellent repair and retrofit potentials, as it possessed high strengthening effect, bond strength, dynamic modulus and durability, as compared with other concretes. Using RPC or CFRP (carbon fiber reinforced plates) for strengthening concrete members one can obtain specific retrofit effects, but the costs are extremely different for these two materials. |
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| Keywords: | repair retrofit durability RPC CFRP |
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