Effect of water reducing agent on concrete
Concrete shrinkage refers to the economic fluctuation volume change caused by internal or external temperature changes, exothermic reactions and other factors. When shrinkage causes shearing forces exceeding the concrete itself in the event of interference, When the tensile limit is exceeded, it is easy to cause cracks, accelerate the intrusion of various hazardous substances, and seriously affect the performance of the concrete. In terms of reducing…
Effect of water reducing agent on concrete, etc.
1. Clotting time. High-efficiency water reducing agents generally have no retarding effect and may even promote the hydration and hardening of cement. Retarded high-efficiency water-reducing admixture is a compound of high-efficiency water-reducing agent and retardant. Under normal circumstances, commercial concrete mixing stations add a certain amount of retarder to the water reducing agent in order to delay cement hydration and reduce slump loss. 2. Air content.…
