Influence of the Amount of Steel Fibers on Fracture Energy and Drying Shrinkage of HPFRCC

Table 7

Linear regression between fracture performance index and steel fiber content for HPFRCC.

Index		Regression equation	R^2
x = steel fiber	y = Pmax	y = 0.01274x + 0.4898	0.97489
	y = Gf	y = 145.59156x + 1105.266	0.95927
	y = δ0	y = 0.1075x + 6.218	0.76622
	y = E	y = −0.02364x + 45.07	0.18383
	y = lch	y = 0.04538x + 2.1732	0.55651
	y = Du	y = 0.03621x + 4.104	0.44805