Effect of Sodium Gluconate on the Fluidity and Early Hydration of Cement Pastes Along with Polycarboxylate Ether

Abstract: The main objective of this paper is to provide a better understanding of the effect of sodium gluconate (SG) along with Polycarboxylate Ether (PCE) on ordinary Portland cement (OPC) hydration behavior. The Pastes performances of ordinary portland cement, including mechanical strength, fluidity, the heat of hydration, Fourier Transform Infrared Spectroscopy (FTIR), and thermal analysis (TGA-DTA) are studied. The dispersion behaviour of Cement paste in the PCE with varying percentages of retarder such as Sodium Gluconate SG is presented in this paper. The correlation was aimed at quantifying the impact of the varying percentage of SG & constant percentage of PCE in the Cement paste. The instrument flow cone, Compressive testing machine & Isothermal Calorimeter were employed in the present study for evaluating the behavior of the Cement paste, which is found to show systematic changes in fluidity, compressive strength (CST), and Heat of hydration successfully. The workability & compressive strength of Cement paste improved by the addition of SG in the PCE up to certain a percentage