FraMCoS 7 2010 Jeju, South Korea

The use of T headed bars in high strength concrete members

There are several practical advantages to using T-headed bars, which have lager diameter heads, in concrete members including simpler installation, less congestion of reinforcement, more effective anchorage, improved seismic response, and enhanced shear resistance. Experimental tests using three kinds of…

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Year 2010
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Abstract

There are several practical advantages to using T-headed bars, which have lager diameter heads, in concrete members including simpler installation, less congestion of reinforcement, more effective anchorage, improved seismic response, and enhanced shear resistance. Experimental tests using three kinds of high-strength concrete members having T-headed bars were performed. First, full-scale beam specimens constructed with high-strength concrete were tested to investigate the effect of T-headed bars as shear reinforcement. In the second test program, the benefits of T-headed bars in the disturbed regions of the dapped ended beams were investigated. Third, high-strength concrete corbels, in which headed bars were used as the main tension tie reinforcements, were constructed and tested. All test specimens reinforced with T-headed bars showed superior performance in terms of load carrying capacities, ductility, and crack width to those reinforced with conventional stirrups or main tension ties.