Research on the influence of curing strategies on the compressive strength and hardening behaviour of concrete prepared with Ordinary Portland Cement

Modernizations in the chemical and construction industries have made it possible to create novel curing techniques. Many studies have been conducted to determine the effectiveness of curing and how it impacts the properties of concrete. In this paper, a class of Ordinary Portland Cement (OPC) type-I Iranian Qayen is utilized to prepare for the Compound Curing Agent (CCA) and the Water Base Curing (WBC) concrete specimens. This paraffin-based water emulsion is adopted to protect fresh concrete against the rapid evaporation of mixing water. The findings from an experimental investigation conducted according to the ASTM standards to determine the compressive strength of mortar cylinders are summarized. After mixing, the slump test is used to determine the mixing efficiency. Then, the concrete specimens are prepared with an altering water/binder ratio of 0.47, utilizing ASTM-graded sand and OPC, and cured with WBC and CCA for 7 days, 14 days, 21 days, and 28 days for compressive strength testing. The influence of structural grade mortar mixing with cement on the concrete strength is investigated, the compressive strengths of different curing procedures are compared, and the technical effective-ness of concrete protection using the curing compounds in Kabul is examined. The experiment results show that the compressive strength of the concrete specimens is determined to be slightly larger in concrete specimens cured with water than in specimens cured with a curing compound. In contrast, the reliability of compressive strength data of the compound-cured concrete speci-mens is better than that of the water-cured ones. Finally, various hardening models are used to fit the compressive strength test results of the concrete specimens. The estimated findings show that the asymptotic model can more precisely reflect the hardening behaviour of concrete during the curing process when compared to the bilinear and broken line models.