October 2025
-
Delayed ettringite formation in concrete
By
in EngineeringDelayed ettringite formation (DEF) is a chemical reaction that occurs in hardened concrete, leading to internal expansion and cracking. This phenomenon typically arises due to the late formation of ettringite (a calcium sulfoaluminate hydrate) after the concrete has already set and hardened. DEF is a significant durability concern, particularly in heat-cured concrete structures, as it…
-
Effect of temperature on curing of concrete
By
The curing of concrete is a critical process that significantly influences its strength, durability, and long-term performance. Temperature plays a vital role in the hydration process of cement, affecting the rate of strength development and the final properties of concrete. Concrete curing is the process of maintaining adequate moisture and temperature to ensure proper hydration…