Fracture behavior and mechanical properties of concrete with artificial lightweight aggregate and steel fiber

摘要: Abstract In this study, the mechanical and fracture properties of steel fiber (SF) reinforced cold bonded fly ash lightweight aggregate concretes (LWACs) were experimentally investigated. The LWACs produced with constant water-to-cement ratio 0.40 two different volume fractions coarse aggregates (LWCA). Three types hooked-end SFs aspect ratios 55, 65, 80 utilized 0.35%, 0.70%, 1.00%, 1.50% concrete volume. Effectiveness ratio, SF fraction, LWCA content on compressive, splitting, flexural strengths as well modulus elasticity, energy characteristic length investigated at end 28-days water curing. Test results revealed that utilization crucially enhanced splitting tensile strengths, length. compressive strength, however, not affected considerably by addition. Moreover, mentioned above significantly influenced artificial content.