Concrete rebound Schmidt hammer (sclerometer) – is a device for concrete and other building materials strength testing. The most common in the world instrument for measuring the strength of concrete is the Schmidt Hammer. The device is called by the name of the engineer Ernst Schmidt, who invented the construction of the sclerometer.
The method is based on the impacting the impact plunger on the concrete surface with predetermined (normed) impacting energy and subsequent measuring of the height of the striker rebounding. The height of the striker rebounding will be proportional to the strength of concrete. The strength of concrete is determined with the calibration charts that are supplied with the instrument.
Concrete Rebound Schmidt Hammer NOVOTEST SH is very ease in operation, has good reliability of design and high measurement accuracy, so that this method is the most common method of measuring the strength of concrete in the world. The strength testing with the Schmidt hammer is correspond with ASTM C 805; ASTM D 5873 (for rock); DIN 1048, p. 2; ENV 206; EN 12 504-2; ISO / DIS 8045.
There are several versions of the device, which are different in impacting energy.
Depending on requerments tasks user always need to select the correct model of Schmidt hammer. All models, independently of impact energy, are devices for non-destructive testing, so that they are not destroying the object of testing.
To verify the accuracy of Schmidt hammer, a special calibrated anvil is used . Correctly functioning instrument have to display certain value testing the standard anvil.
The pulse velocity tester IPSM-U+T+D allows to measure the strength and homogeneity of the concrete, bricks and other materials under the composition and surface sounding in products and designs for construction projects, inspection of buildings and structures, according to ASTM C597-16 (Standard Test Method for Pulse Velocity Through Concrete). Has the determining of the depth of cracks by the surface sounding probe function and also flaw detection mode (A-scan).
Measuring the strength and uniformity of construction materials by ultrasonic method NOVOTEST IPSM-U+T+D is designed for :