Innovative usages of stainless steel slags in developing self-compacting concrete

摘要: Abstract This paper deals with development of self-compacting concrete (SCC) containing stainless steel oxidizing slag (SSOS) and reducing (SSRS) – byproducts the makings. The was employed as fine coarse aggregates in substituting to conventional materials (sand gravel) various percentages (i.e. 0%, 50%, 100%). Meanwhile, used a part ordinary Portland cement (e.g. 10%, 20%, 30%). As result, total 12 mixtures fixed water–binder ratio ( w / b  = 0.4) were prepared for experiment; its properties obtained fresh state including density, flowability, viscosity, passing ability, setting time hardened such compressive strength, ultrasonic pulse velocity, rebound hammer, length change, surface resistivity examined accordingly. results indicate that incorporating SSOS or SSRS SCC apparently reduces workability besides effectively enhancing viscosity. Mixture increased shows higher density than control, while high level lowering density. More interestingly, slags-based can accelerate hardening process, which shortening 25% 36%, corresponding mixture 50% 100% aggregates. For properties, strength replacement full exhibits slightly better at least similar considerable improvement resistivity, potentially volumetric instability. Strength models, modifying from ACI-209, have also been provided SCC. In addition, relationships between UPV, number, electrical versus within 91 days further established.