Validation of slag-binder fiber-reinforced self-compacting concrete with slag aggregate under field conditions: Durability and real strength development

The environmental conditions to which a concrete may be exposed will condition its real range of use. Thus, behavior must, at all times, verified under wide variety conditions, in order ensure applicability. In this study, the strength development and durability fiber-reinforced self-compacting is analyzed. This particular incorporates 100% coarse (4/12 mm) fine (0/4 Electric Arc Furnace Slag (EAFS) as aggregate, well limestone fines aggregate powder (0/1.18 mm). Furthermore, Ground Granulated Blast (GGBFS) was also added binder. Four mixtures with without either metallic or synthetic fibers, different GGBFS contents were designed. Real evaluated mixes by comparing both cores extracted from full-scale beams wet-cured laboratory specimens. analyzed Mercury Intrusion Porosimetry (MIP), freeze/thaw, moist/dry, sulfate-attack, chloride-penetration, carbonation, SO2-attack tests. On one hand, long-term mechanical properties (real conditions) similar specimens cured moist chamber for 90 days mixes. other, increase water content when adding fibers maintain flowability, addition GGBFS, resulted an MIP porosity. Therefore, use synthetic, slightly worsened concrete, facilitating entry aggressive external agents. Nevertheless, increased flexibility cementitious matrix beneficial against moist/dry sulfate-attack phenomena, despite Overall, complied regulatory requirements environments, although amounts should carefully studied.