A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Round robin test to compare flexural strength test methods for steel fiber‐reinforced sprayed concretes
According to the current European standard EN 14487‐1 (residual) flexural strengths of steel fiber‐reinforced sprayed concrete are determined by performing a four‐point bending test on beams according to EN 14488‐3. Controversial to this test method, a three‐point bending test on notched square panels is recommended by EFNARC. According to EFNARC, one substantial advantage of this test method is the minor scattering of the test results. Against this background, a round robin test was performed at European level. The aim was to investigate the comparability and correlation on the one hand, on the other hand to assess the precision of both test methods. The results shall provide initial pointers for the classification of the residual strengths for steel fiber‐reinforced sprayed concrete with two different test methods. The results showed that the scattering of the residual strengths is marginally smaller with the test method on panels in comparison to the test method on beams. As a result, a slightly higher precision was achieved. Therefore, the EFNARC test shall be included as an alternative test procedure in EN 14487‐1 in future.
Round robin test to compare flexural strength test methods for steel fiber‐reinforced sprayed concretes
According to the current European standard EN 14487‐1 (residual) flexural strengths of steel fiber‐reinforced sprayed concrete are determined by performing a four‐point bending test on beams according to EN 14488‐3. Controversial to this test method, a three‐point bending test on notched square panels is recommended by EFNARC. According to EFNARC, one substantial advantage of this test method is the minor scattering of the test results. Against this background, a round robin test was performed at European level. The aim was to investigate the comparability and correlation on the one hand, on the other hand to assess the precision of both test methods. The results shall provide initial pointers for the classification of the residual strengths for steel fiber‐reinforced sprayed concrete with two different test methods. The results showed that the scattering of the residual strengths is marginally smaller with the test method on panels in comparison to the test method on beams. As a result, a slightly higher precision was achieved. Therefore, the EFNARC test shall be included as an alternative test procedure in EN 14487‐1 in future.
Round robin test to compare flexural strength test methods for steel fiber‐reinforced sprayed concretes
Youn‐Čale, Bou‐Young (author) / Plückelmann, Sven (author) / Breitenbücher, Rolf (author)
Structural Concrete ; 23 ; 255-267
2022-02-01
13 pages
Article (Journal)
Electronic Resource
English
| BASE | 2021
Orthogonal Test of Flexural Toughness for Hybrid Fiber Reinforced Concretes
| British Library Conference Proceedings | 2011
Flexural properties of steel fiber-reinforced concretes at low temperatures
| Online Contents | 1998