Revised Rebound Hammer and Pull-Out Test Strength Curves for Fiber-Reinforced Concrete

Table 12

Various regression models used to estimate the compressive strength of HFRC from postinstalled pull-out forces.

Regression models	Equations		(%)	(%)	(%)
Linear		0.9768	3.07	3.99	3.79
Exponential		0.9723	3.47	4.25	4.15
Power		0.9754	3.10	4.00	3.80