Assessment of Thermal Curing Effects on the Mechanical Performance of Concrete Incorporating Dega Set AX 4255

Abstract

This study investigates the influence of incorporating the chemical plasticizer Dega Set AX 4255 on the compressive strength of concrete subjected to varying curing water temperatures. A structured experimental program was conducted, focusing on compressive strength as the primary indicator for evaluating the mechanical performance of the modified concrete mixtures. The findings revealed that curing water temperature plays a pivotal role in determining the effectiveness of the additive. A gradual improvement in compressive strength was observed at 7 days as the curing temperature increased from  to , suggesting that the interaction between the additive and thermal conditions accelerates early hydration and enhances internal cohesion. However, this positive trend did not persist over time; at 28 days, specimens exhibited a decline in strength with rising curing temperatures, indicating potential adverse effects linked to over-acceleration or microstructural instability. These results underscore the critical importance of balancing additive selection with appropriate thermal curing conditions. They highlight the necessity of controlling curing water temperature to ensure durable and stable structural performance, particularly in applications requiring early strength development without compromising long-term concrete quality.