STUDY ON BEHAVIOR OF PLAIN AND STEEL FIBRE REACTIVE POWDER CONCRETE WITH MODELING APPLICATION OF BRIDGE PIER ELEMENT

• Main Author: Fajar, Muhammad
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/42888
• Institution: Institut Teknologi Bandung

Reactive powder concrete (RPC) is a type of concrete with Ultra High-Performance Concrete (UHPC). The tendency of brittle concrete properties with increasing compressive strength is overcome by the addition of steel fibers. The combination of steel fiber and RPC produces ductile ultra-high performance concrete known as Steel Fiber Reactive Powder Concrete (SFRPC). In this study, the processing and validation of RPC and SFRPC material experimental data were processed with 4 (four) types of tests namely uniaxial compression test (compressive strength and compressive strain), direct tensile test (tensile strength and tensile strain), flexure test (flexural strength) ), and three point bending test with crack tip (fracture toughness and energy) to get the mechanical parameters of the material as an input for modeling applications of bridge pier elements in the ABAQUS software. Modeling in Abaqus uses 3 (three) dimensional non-linear finite element method (3D Nonlinear FEM) with input parameters of elastic and inelastic properties of the material. The inelastic properties of RPC / SFRPC are modeled with Concrete Damage Plasticity (CDP) and crack characteristics with Extended Finite Element Method (XFEM). The optimum composition of SFRPC material will produce materials with high mechanical performance and ductility so that their use of bridge pier element can improve its performance in longer inelastic deformations with fat cyclic hysteretic curves. In addition, the use of SFRPC can reduce the size of the cross section so that it reduces the mass of the structure which is linear to the magnitude of the shear force of the earthquake acting on the structure.