Design and evaluation of Self-consolidating Concrete (SCC)

Abstract

Technological innovations in the industry of chemical admixtures for construction materials as concrete, specifically of the superplasticizers, make possible the development at the end of the eighties, of a revolutionary concrete capable of auto consolidating, being commonly designated as Self-consolidating Concrete – SCC. The characteristic of the self compacting concrete is its ability to fill completely and without segregation the shape of formwork and get consolidation without need to apply vibration energy. In this research different procedures of mixtures design and existing equipments to evaluate self compacting concrete mixtures were analyzed. The obtained results allow to propose an effective evaluation and control criteria of the requirements of auto consolidation of self compacting concrete mixtures. This research is aimed to develop a design methodology for self compacting concrete mixtures following a sequential design procedure. First, to obtain an optimum dosage of chemical admixture to saturate the cement paste, then, to evaluate concrete mixtures with different proportions of coarse and fine aggregates, and finally, testing and measuring the different basic properties of the SCC in plastic state.