engleski

Bending resistance of high performance concrete elements

Our previous research was focused on reactive powder concrete (RPC). In this article high performance concrete (HPC) will be analyzed. With high performance concrete both load bearing capacity and esthetics are combined to achieve superior structure. Due to lesser dimensions of walls and columns, space in high rise buildings is better utilized. With the combination of steel with high yield strength and ductility, difficulties with dense longitudinal and shear reinforcement are avoided. In this article current knowledge about the properties, technology and composition of high strength concrete is presented. Important parameters needed for the analysis of load-bearing (ultimate limit state), ductile and serviceable (serviceability limit state) reinforced concrete elements subjected to bending, with or without longitudinal force, are considered. These parameters are: design of compressive stress diagram, ductility, deflection, and crack width restraint. The impact of tensile, compression and shear reinforcement are analyzed. The results are compared with values for normal strength concrete. The use of high strength concrete is recommended

high performance concrete; bending resistance; ductility

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