Question

12. The first few hours after cement and water are mixed are called the dormant/induction period (stage II). At the end of the dormant period, the concrete sets. The popular theory to explain the dormant period is called nucleation- control/nucleation-dissolution theory. (a) Briefly describe the nucleation control theory. (6' Points) (b) What is the effect of adding calcium salt when mixing concrete on the dormant period and explain it using nucleation control theory? (6' Points)

Answer 1

b)