Immersing a hardened concrete

in water can cause the further hydration without altering the solid skeleton developed by the the initial water-to-cement ratio of concrete.

Cement paste has a compressive

strength higher than the corresponding concrete because of the lack of the

interfacial transition zone. (Assume that the same water-to-cement ratio and

the same curing method are used for both paste and concrete).

The slow cooling process can

effectively stabilize the components of clinkers produced in the burning kiln.