Research Article

The Effect of Synthetic Hydrated Calcium Aluminate Additive on the Hydration Properties of OPC

Table 2

The main characteristics of thermal effects typical of CAH.

CompositionHydration time (h)Onset, °CPeak, °CHeat of process, J/gUnreacted CAH, wt.%

OPC-CAH20250.2268.621.81100
1.8253.8271.014.6567.17
3254.5273.314.5166.53
5.5256.7276.313.6762.68
9.5261.6280.512.2456.12
13265.2282.511.9454.75
16.5264.1286.011.7153.69
24267.7286.810.3947.64