The effects of impact loading on the mechanical properties of the SFRCs
Makaleler > Tam Makale · 2013
Yazarlar: Şemsi YAZICI, Hasan Sahan Arel, Volkan Tabak
Construction and Building Materials, SCI Expanded İndekslerine Giren Dergi, Uluslararası, Wos, 2013, cilt 41, ss 68-72
DOI: 10.1016/j.conbuildmat.2012.11.095
Özet
The mechanical properties of steel fiber concretes (SFRCs) exposed to impact loading were investigated within the scope of this study. For this purpose, three different steel fibers having aspect ratios of 45, 65, and 80 were used in 0.5%, 1.0% and 1.5% volumes, respectively in order to provide 10 different concrete mixtures. Compressive strength of these concrete mixtures was almost 50 MPa. Cylindrical specimens having 150 mm diameter and 300 mm height were prepared. These specimens were cured in water for 28 days. After curing, the specimens were cut in 150 mm diameter and 50 mm height dimensions for impact test. Impact tests were conducted on these specimens by dropping weights on the cylinders, and their impact fracture energies were determined. Another group of concrete specimens which were produced from the same concretes and which were 150 mm in diameter and 50 mm in height were exposed to impact loads of 25%, 40% and 55% of their impact fracture energies in order to identify the mechanical losses in terms of their compressive strengths and splitting tensile strengths following the effect of the impact.