Deflection measurement device for the deformation controlled determination of the flexural tensile strength of fiber reinforced concrete beam specimens used for industrial floors and
for tunneling in accordance with:
- ASTM C 1609 / ASTM C 1018
- EN 14651 / EN14488
- AFNOR P18-409
- BV-Merkblatt "steel fiber concrete"
The device is made for testing beam specimens in the following sizes:
✓ 4 x 4 x 14 inch
✓ 100 x 100 x 350-500 mm
✓ 120 x 74 x 500 mm
✓ 150 x 150 x 500-700 mm
✓ 200 x 200 x 800 mm
This product allows the accurate determination of the specimen deflection applying third- or four-point loading beyond the load maximum, exclusive secondary deformation effects.
As measurement feeders two inductive displacement transducers with a maximum displacement path of ± 10 mm are used. The maximum linearity error of the transducers amounts 0,2%.
Deflection measurement device for the deformation controlled determination of the flexural tensile strength of fiber reinforced concrete beam specimens used for industrial floors and for tunneling in accordance with:
Advantages Large operation range (variable diameters and measuring lengths) ✓ High reproducibility ✓ Application and disassembling also during the test ✓ Conception for mobile tasks (transport box) Working Principle The double extension sensor with the desired measuring lenght is applied to the specimen. It is fixed by the springs. At this procedure the precise extension sensors are blocked at neutral position. After the adaption they will be delocked and a zero adjustment (ZERO potentiometer) will be performed. The compression test will be done; before rupture of the specimen the extensiometer should be removed. The removement can be performed even when sample is under load.