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Deskripsi Proceq Original Schmidt Type L – Concrete Hammer Test
Proceq Original Schmidt Type L

DIFFERENCE Type N & L:
* Type N: Standard impact energy. Minimum thickness of test object: 100 mm (3.9”’) and should be firmly fixed in the structure
* Type L: Low impact energy. Suitable for brittle objects or structures less than 100 mm (3.9”’) thick

OVERVIEW:
The original Schmidt hammer, type L is the ideal option for testing thin walled items with a thickness between 50 to 100 mm (2”” and 4”’) or for analyzing small components. It is also suitable for examining cast stone components which are sensitive to impact. In rock mechanics, the type L Original Schmidt is commonly used for the classification of rock cores and brittle rock.

The Type L Hammer is a portable and relatively inexpensive nstrument for measuring the surface hardness of rock. The hammer can be used efficiently in both the laboratory and the field.

The mechanism of operation is simple: a hammer released by a spring, indirectly impacts against the rock surface through a plunger and the rebound distance of the hammer is then read directly from the scale ranging from 10 to 70 MPa (1,450 to 10,152 psi).

The type L hammer is used on NX or larger core specimens or block specimens having an edge length of at least 6 cm. TC-3040 Calibration Anvil, manufactured from a special steel alloy, is used for the calibration of test hammers.

Deskripsi Proceq Original Schmidt Type N – Concrete Hammer Test
Proceq Schmidt Hammer, Type N

DIFFERENCE Type N & L:
* Type N: Standard impact energy. Minimum thickness of test object: 100 mm (3.9”’) and should be firmly fixed in the structure
* Type L: Low impact energy. Suitable for brittle objects or structures less than 100 mm (3.9”’) thick

OVERVIEW:
The original Schmidt hammer, type N, is designed for non-destructive testing of concrete items 4″ (100mm) or more in thickness, or concrete with a maximum particle size less than or equal to 1.25″ (32mm). It is designed for testing concrete within a compressive strength range of 1,450 to 10,152 psi (10 to 70 N/mm2) and impact energy of the test is 1.6 ft-lbs (2.207 Nm). The (type N) Schmidt hammer is pressed against the concrete structure and the rebound values are displayed on a mechanical sliding scale. These values can then be correlated to compressive strength by using the conversion table chart affixed to the hammer. The original Schmidt hammer is known for its durability and accuracy.