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

Table 8

Model equations used to estimate the relationship between HFRC compressive strength and RN.

Regression models	Equations	(%)	(%)
JGJ/T 23-2011		5.8	6.8	0.8725
Linear		6.2	7.3	0.8564
Exponential		5.9	6.9	0.8581
Second-order polynomial		5.9	7.0	0.8611
Power		6.0	7.1	0.8533