EXPERIMENTAL STUDY OF IMPROVEMENT OF SLUMP RETENTION TIME AND INITIAL CURING PERFORMANCE USING FLUID RETENTION AGENTS AND SUPER RETARDANTS

Abstract

In this paper, the effects of fluid retention agents and super retardants on slump retention time at different ambient temperatures were verified. The effects of curing accelerators on bleeding, setting time, and initial strength development, which are affected by the improvement of slump retention, were also examined. The results showed that slump retention time was improved by the use of fluid retention agents or super retardants, and that their performance could be controlled by the rate of addition. It is suggested that the problems of increased bleeding, delayed setting, and reduced initial strength development can be solved by accelerating the hydration of the cement with a curing accelerator.