Concrete Test Hammer Type Lr - Schmidt

Concrete Test Hammer Type Lr - Schmidt

Concrete Test Hammer Type Lr - Schmidt
to BS1881, EN12504 part 2:2001
CodeCN653
British StandardBS1881-202
Other StandardsEN12504-2
Approx. Weight (kg)2.7
Tariff90248090
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Measuring range 10 to 70 N/mm2 compressive strength.


Handling and dimensions as for types N and NR, but with a three times smaller impact energy.
These types are used for testing thin-walled (< 100 mm) or small components but also cast stone components sensitive to impact.

Supplied in a carrying case including a grinding stone and operating instructions.
Case Dimensions: 325 x 295 x 105mm
Weight: 2.7kg

Test Procedure

(Similar for all types)
Smooth test area with a grinding stone.
Perform test series of at least ten test impacts.
The compressive strength of the concrete is read from a conversion chart.

The recording strip is used as a test document. Mean rebound value R may be visually estimated.