Proceq N / L - Page 9

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Conversion Curves, Concrete Test Hammer Model L/L R
Concrete pressure resistance of a cylinder after 14 - 56 days
Rebound value R
Fig. 2.6 Model L/LR: Conversion curves based on the
average pressure resistance of a cylinder and
the rebound value R
Limits of Dispersion
fck
cyl.
: The max. and min. values are set so 80% of
all test results are included.
© 2017 Proceq SA Measurement 7
Conversion Curves, Concrete Test Hammer Model N/NR
Concrete pressure resistance of a cylinder after 14 - 56 days
Rebound value R
Fig. 2.5 Model N/NR: Conversion curves based on
the average compressive strength of a cylinder and
the rebound value R
fck
cyl.
m: Average pressure resistance of a cylinder
(probable value)
The concrete test hammers shown in Fig. 2.5
and Fig. 2.6 indicate the impact direction.