Influence of Alccofine 1203 on strength and durability properties of eco-efficient self-curing concrete

Abstract

ABSTRACT Concrete becomes an essential part in contemporary infrastructure. However, there are substantial environmental problems allied with the production of ordinary concrete. Large volumes of water are essential for mixing and curing, and major amounts of CO2 are released into the environment during the hydration process of cement. These concerns increase environmental deterioration by aggravating global warming and depleting natural resources. Using sustainable approaches, such as secondary cementitious materials and self-curing procedures, has become more and more important. 4% to 20% Alccofine (AF), an ultrafine slag has been partially substituted for cement. Super Absorbent Polymer (SAP) was added between 0.1% and 0.5% by weight of cement to enrich internal curing. SAP improves long-lasting hydration by absorbing and gradually releasing water in the mix. The workability, compressive strength, and flexural strength of the mixes were assessed. Furthermore, half-cell potential (HCP) and ultrasonic pulse velocity (UPV) studies were conducted for durability assessment. According to test results, adding 0.3% SAP and 12% AF increased 28-day compressive and flexural strength of concrete by 11.4% and 24.1%, respectively. A lower HPC value and an 11% rise in UPV values suggested that the blend was more durable due to lessen micro cracking, and improve internal curing. This combination enhanced the properties of sustainable concrete without sacrificing structural integrity.