Abstract
This research aimed to examine the influence of varying curing water temperatures on concrete strength. The study involved (72) cube-shaped concrete specimens, each measuring 15 x 15 x 15 cm, using three different concrete mixes (C25, C30, C35). These specimens were placed in three water basins with temperatures of (30 C0, 50 C0, and 70 C0), along with a basin containing treated water at room temperature (21 – 25) C0. The research was conducted from April to July 2024, utilizing a total of four basins of treated water. For each concrete mix, (24) samples were allocated, divided into six samples for each curing water temperature—three tested at (7 days) and three at (28 days). Reference samples treated at room temperature were included for comparative analysis. The findings indicated that while the concrete's compressive strength increased at an early age (7 days) with rising curing water temperatures, it decreased at a later age (28 days) compared to the specimens cured at room temperature. Keywords: Temperature, curing water, early age, compressive strength, reference samples.
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