Effects of Incorporating Steel and Glass Fibers on Shear Behavior of Concrete Column-Beam Joints

다국어 초록 (Multilingual Abstract)

This paper presents the effects of adding steel and glass fibers on structural behavior of concrete column-beam joints in comparisonwith the conventional concrete. Nine full-scaled exterior column-beam joints cast by one traditional concrete (declared as controlcolumn-beam joint), four steel fiber reinforced & four glass fiber reinforced concretes were tested under monotonic loading.
Percentage of each fiber added in respective column-beam joint was varied from 0 to 2% with an increment of 0.5%. Steel fiberswere added on weighted basis of concrete while glass fibers were added on the weighted percentage of cement. Results wereevaluated with respect to first crack load, ultimate load, deflections and crack patterns. Finite element modeling was carried out onANSYS version 11 by using material properties evaluated by physical testing of concrete used in the casting of joints. Resultsobtained from FEM and experimental program were found to be in good agreement with each other. It was also found that theincorporation of fibers in column-beam joints improved their stiffness, ductility, strength and it could be one of the likely alternateapproaches for reducing the overcrowding of lateral reinforcement in column-beam joints.

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