ORIGINAL SCHMIDT

Concrete testing with the Original Schmidt test hammer is the most frequently used method for non-destructive concrete testing worldwide.

For every demand and specific test application, Proceq offers the right concrete test hammer.

Original Schmidt concrete test hammers are available in models with different impact energies in order to meet the needs to test a wide range of material types and sizes.

Our types N, NR, L and LR have been specially developed for assessing the quality and compressive strength characteristics of concrete within a range of 10 to 70 N/mm² (1’450 to 10’152 psi).

Versions incorporating paper chart recorders (LR and NR) can automatically register the rebound values on a paper strip chart.

Proceq’s type ND and LD Digi-Schmidt test hammers measure rebound values electronically and allow the direct digital reading of test results.

Features

• Type N: Rebound values are read from a scale for subsequent calculation of the mean. Compressive strength values can be read from a conversion diagram
• Type NR: Rebound values are recorded as a bar chart on a paper strip which has a capacity for 4’000 test impacts
• Type L: Handling equals type N, but type L offers an impact energy three times smaller
• Type LR: Handling equals type NR, but with an impact energy that is three times smaller. The LR also features a paper strip that can document up to 4’000 test impacts without reloading

Applications

• Used for the non-destructive measurement of concrete/mortar compressive strength characteristics
• Control of uniform concrete quality (in-situ concrete and prefabricated structures)
• Detection of weak spots in concrete
• The L/LR hammer operates with  impact energy that is significantly lower, making this hammer the ideal option for testing thin-walled items with a thickness between 50 and 100 mm (2 in. and 4 in.) or for testing small components.
• It is suitable for testing cast stone components which are sensitive to impact. In rock mechanics, type L/LR hammers are commonly used for the classification testing of rock cores and brittle rock

Standardization

Technical Data