Abstract
This paper presents application of peak load for determining double-K fracture parameters of concrete. The existing conventional experimental method and analytical methods require measurement of crack opening displacement at critical condition during fracture test whereas this measurement is not required in peak load method. Further, double-K fracture parameters are computed using both conventional analytical method and peak load method for three point bending test of specimen size range 200–500mm. The comparison of the results shows that both the fracture parameters of the double-K fracture model can be determined using peak load method without any appreciable error.
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