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ASTM C is a standard test method for the flexural toughness and first crack strength of fiber-reinforced concrete. A 14x4x4 inch xx mm beam is loaded using third-point loading, while measuring net mid-span deflection. Testing is continued through crack initiation, up to a specified end-point deflection.
Data collected after first-crack is used to determine the toughness index of the concrete sample at deflections 3, 5. The toughness index provides a measure of the concrete's energy absorbtion after first-crack initiation. ASTM C tests the flexural toughness of of fiber reinforced concrete using a centrally loaded round panel. By means of our testing expertise and modular product design, we will help find the solution that is right for you.
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ASTM C1018 Fiber Reinforced Concrete Flexural Toughness Equipment
This test method evaluates the flexural performance of toughness parameters derived from fiber-reinforced concrete in terms of areas under the load-deflection curve obtained by testing a simply supported beam under third-point loading. Formerly under the jurisdiction of Committee C09 on Concrete and Concrete Aggregates, this test method was withdrawn in May due to lack of interest and support for its continued use. These indices are determined by dividing the area under the load-deflection curve up to a specified deflection criterion, by the area up to the deflection at which first crack is deemed to have occurred. Residual strength factors that represent the average post-crack load retained over a specific deflection interval as a percentage of the load at first crack are derived from these indices. Values of toughness indices and residual strength factors are independent of the system of units used to measure load and deflection.