Table 2. Correction value according to the mean hardness value (
R
) and strike angle in the rebound hardness test (
Sanyo, 2002
).
Standardized rebound hardness in each strike zone (
R
, kgf/cm
2
)
Correction value at the strike angle with −90° (kgf/cm
2
)
10
3.20
20
3.40
30
3.10
40
2.70
50
2.20
60
1.70