Effect of Water Reducing Admixture Main and Side Chain Length Variation on the Time Dependent Slump Flow Performance of Mixtures with Different C3A Content


KOBYA V., KARAKUZU K., MARDANİ A.

International Journal of Science Engineering and Management, vol.10, no.1, pp.28-30, 2023 (Peer-Reviewed Journal)

Abstract

In this study, the effect of the polycarboxylate-based superplasticizer (PCE) main and side chain length variation on the admixture requirement to provide the target slump-flow value (27±2 cm) and the time-dependent slump-flow performance of mortar mixtures with different C3A content was investigated. For this aim, a total of 12 mortar mixtures were prepared by using Portland cement with four different C3A ratios (2%, 3%, 6%, 9%) and three different main and side chain lengths PCE. According to the results, generally, the PCE requirement for target slump-flow value increased by an increment of the C3A ratio. The admixture requirement for the mixture containing PCE with medium main and side chain length for target slump was 28-41% and 7-12% lower compared to those containing PCE having a long main chain and short side chain and the PCE having a short main chain and long side chain, respectively. On the other hand, the time-dependent slump flow performance of mixtures containing PCE having medium main and side chain lengths; compared to those containing long main chain and short side chain and short main chain and long side chain, in the range of 6-22% and 13-30% lower, respectively.