Microstructural Features of Freezing and Thawing-Creep Damages for Concrete Mixed with Fly Ash

Table 1

Chemical composition of cement.

Materials	SiO2	Al2O3	Fe2O3	CaO	MgO	Na2O	K2O	SO3
Cement	21.60%	4.13%	4.57%	64.44%	1.06%	0.11%	0.56%	1.74%
Fly ash	54.90%	25.80%	6.90%	8.70%	1.80%	0.30%	0.10%	0.60%