Retrofit of Concrete Panels with Prefabricated HPFRCC Plates

Abstract eng:
The main goal of this study is to develop a convenient strengthening technique for retrofitting of beam-column joints against shear forces. For this purpose the considered retrofitting technique was studied by utilizing a simple testing method for experimental analysis. Experimental study included tests of reference specimens and tests of specimens retrofitted with high performance fiber reinforced cementitious composite (HPFRCC) panels. The HPFRCC panels were either only bonded on the specimens using epoxy mortar or anchored to the specimen by steel bolts as well as bonding. The behavior of the specimens under vertical monotonic load was investigated with a theoretical study by employing non-linear finite element analysis (FEM). The retrofitted members were found to exhibit much better performance in terms of strength and deformation capability. The anchorage application was found to positively affect this improved performance. Experimental results and theoretical results obtained from FEM analysis were also compared. It was seen that finite element analysis is successful to predict the load carrying capacity of the original and the retrofitted specimens as well as the vertical load–vertical strain relationship of the original specimen.

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