Development of Concrete with High Early-Stage Strength

Abstract

A new type of high-performance concrete was developed based on calcium sulfoaluminate cement. Due to its rapid set, calcium sulfoaluminate cement is ideal for the repair of pavements, bridge decks, industrial floors, parking garage decks, freezer floors and vertical and overhead repairs. The goal of this research was to develop a concrete with high early strength and workability maintained for 60 minutes. The work was divided into two parts. The first step consisted in choosing adequate superplasticizer and set accelerator to fulfill the requirements of early-age high strength and good workability. The study was carried out on the mortar phase of concrete. In the second step, the results were applied to design concrete construction projects.