Comparative Assessment of Self-Compacting Concretes (SCC) With Fly Ash and Fine Sand

Resumen

This paper aims to contribute to decisions concerning the use of fine materials, which are used to the resistance to segregation of self-compacting concrete (SCC). In this study, samples of SCC were prepared with fly ash, a pozolanic waste and fine sand, a non pozolanic material, using the mix design method proposed by Tutikian-Dal Molin [1]. It was observed that the utilization of fly ash increased compressive strength, mainly on high ages, and also lowered chloride ion penetration and the absortion within the same range of compressive strength values in comparison the fine sand SCC. It was also observed that the final cost of the fly ash SCC was lower than the fine sand SCC for similar strength levels. Designes and performances diagrams of both SCC were shown.