Performance Optimisation of Self-Curing Con- crete Incorporating Polyethylene Glycol as an Internal Moisture Retaining Agent

Abstract

This research explores the potential of polyethylene glycol (PEG-400) as an internal curing agent for developing self-curing concrete, providing an innovative and sustainable alternative to conventional external water-curing methods. The study focuses on addressing the challenges of water scarcity in construction by introducing a self-curing mechanism that maintains internal moisture for prolonged hydration. Polyethylene glycol, a water-soluble polymer, was incorporated in varying proportions to evaluate its influence on the hydration process and overall performance of concrete. The results demonstrate that the controlled addition of PEG-400 significantly enhances the hydration rate, reduces early-age shrinkage, and improves the overall mechanical behaviour of concrete. However, excessive dosage leads to a reduction in strength due to interference with the cement matrix formation. The findings confirm that an optimum level of PEG-400 promotes effective internal curing, resulting in durable and sustainable concrete. This approach offers a viable pathway for advancing eco-friendly construction practices by minimising water consumption while maintaining high performance and durability standards.