Flexural toughness and evaluation method of steel fiber reinforced self-compacting lightweight aggregate concrete

Abstract The main purpose of this study was to investigate the effect of steel fiber on the flexural toughness of steel fiber reinforced self-compacting lightweight aggregate concrete (SFSLC). The applicability of the flexural toughness evaluation method specified in ASTM C1609 and JG/T 472-2015 for SFSLC was investigated. Test results showed that the evaluation methods in ASTM C1609 and JG/T 472-2015 were not suitable for evaluating the flexural toughness of SFSLC due to its higher deflection than fiber reinforced normal concrete. A new flexural toughness evaluation method including four indexes was proposed and test results showed that this new method could effectively reflect the flexural performance of SFSLC.