Optimization of steam-curing regime for high-strength, self-consolidating concrete for precast, prestressed concrete applications

Abstract

| PCI Journal 48 Self-consolidating concrete (SCC) can flow through densely reinforced or geometrically complex structural elements under its own weight and adequately fill the formwork with minimum segregation. Because of its high workability and high early strength, SCC is widely used in the fabrication of precast concrete elements with complex geometry. Such concrete can provide good surface finish and enhance productivity. The use of SCC opens the way for automation of concrete construction and concrete product in manufacturing processes. SCC permits the production of virtually any cross section. Sections with dense reinforcement and bottlenecks at built-in fittings can be properly cast using SCC. Fewer and smaller air bubbles form on the underside of horizontal formwork. The surface can be smoother and more uniformly colored than those with conventional vibrated concrete of normal consistency.