admixtures are used in concrete to: group of answer choices enable cement hydration. provide compressive strength. delay hardening. create an alkaline environment.

Admixtures are used in concrete to delay hardening.Admixtures are utilized in concrete to postpone hardening. The hardening method includes heating the additives above the critical (normalizing) temperature, protecting at this temperature for one hour in line with inch of thickness cooling at a price speedy sufficient to permit the cloth to convert to a miles harder, more potent structure, after which tempering. Hardening means a metallurgical metalworking method used to growth the hardness of a metallic. The hardness of a metallic is at once proportional to the uniaxial yield strain on the region of the imposed strain.Learn more about hardening at https://brainly.com/question/20813115#SPJ4