Durometer to check concrete resistance PCE-HT-225A

mechanical durometer to check concrete strength (Schmidt measurement method)

The easy-to-use durometer is primarily used in the construction sector and other industrial sectors (checking the hardness of rolled goods...). This durometer for checking concrete is based on the Schmidt principle. The test is always performed under the same test energy of 2207 J. The initial rebound kinetic energy is given in the durometer as a measure of the hardness of the concrete, the pressure on the surface, or the compressive strength (kg/cm² or its conversion to N/mm²). The quality of concrete is assessed based on its compressive strength, as it is a guiding value to check the load-bearing capacity and durability of concrete constructions. The compressive strength is represented with a series of numbers and letters. For example: B 25 means that it is normal concrete with a compressive strength of 25 N/mm². There are different intermediate values up to the higher strength class B 55. With our durometer, you can classify concrete easily, quickly, and accurately. The durometer is delivered factory calibrated, but an optional ISO calibration certificate can be requested (additional charge).

- Very solid construction.

- Special rebound body for performing innu-

   measurable concrete checks

- Very easy handling

- Conversion table on the back

- Corrective aids for measurement results-

   Edition in the user instructions

- Optional ISO calibration certificate

General information on pressure resistance in concrete

Pressure resistance is generally defined as the measurement of resistance to rupture when applying a pressure load on an axis for a short period of time. The pressure resistance of concrete is determined considering the influence of the following magnitudes:

 Resistance of the cement block

- Composition and compaction of concrete

- Storage time and conditions

- Dimensions and shape of the test element

- Type and duration of the load

Pressure resistance is usually determined in the laboratory in concrete cubes or in straight circular cylinders. In the case of cylinders, once the excess concrete is removed, it is recommended to immediately establish a leveling layer that will often be necessary to obtain a smooth and flat pressure surface. The cylinders harden constantly. Since in practice it is not possible to perform a check with laboratory methods, the rebound hammer is used, which is easy to handle and provides considerable accuracy.

Technical specifications

Measurement ranges

100 ... 600 kg/cm² (~ 9,81 ... 58,9 N/mm²)

Accuracy

±18 kg/cm² (~ ±1,8 N/mm²)

Percussive energy

2207 J

Measurement indicator on the front scale

0 ... 100 (sin dimensiones)

Scale for pressure resistance

at the back

To convert dimensionless indicator values to kg/cm² (with angle input)

Correction table for measurement values

In the operating instructions

Maximum concrete thickness (of the material)

70 cm

Dimensions

Diameter of 66 x 280 mm.

Peso

1 kg

Contents of the shipment

1 x PCE-HT-225A hardness tester (Schmidt measurement method)

1 x Round grinding bar

1 x Wooden transport case

1 x User manual