Performance of Repaired Structural Walls with Different Shear Span Ratios Han, Sang-Whan; Oh, Chang-Hak; Lee, Li-Hyung;
The purpose of this study is to evaluate the capacities of repaired structural walls with different shear span ratios(1, 2, 3). Experimental tests were carried out. In this study three isolated large-scale wall specimens were made. The original wall specimens were tested until the drift reaches more than 3%. The region of the damaged specimen with the crack larger than 0.2 mm is replaced by new concrete. Also, severly distorted reinforcements were also replaced by new reinforcements. The crack smaller than 0.2 mm was cured by epoxy resin. Because of the space limitation of the laboratory the dimensions of all walls are the same. The shear-span ratio was controlled by the combination of axial and lateral force using the special test setting. All specimens were tested using the incremental quasi static cyclic load until failure occurs. Test results show that strength of repaired walls was almost equivalent to that of original walls. However, deformation capacities of repaired wall specimens are inferior to the original wall specimens.
Oh, Young-Hun, Han, Sang Whan, and Li Hyung Lee, Effect of Shear Span Ratio (M/V ㆍ D) on Strength and Deformability in RC Structural Walls, submitted to the Journal of Korean Concrete Institute, KCI, 1999
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