Advances in Materials Science and Engineering / 2015 / Article / Tab 1

Research Article

Influence of Alternation of Sulfate Attack and Freeze-Thaw on Microstructure of Concrete

Table 1

Chemical and physical properties of cement, fly ash, and slag.

Chemical composition/%Physical propertiesCompressive strength of cement/MPa
SiO2Al2O3Fe2O3CaOMgOK2ONa2OR2OSO3lossSpecific density
/(kg/m3)
7 days28 days

Cement22.533.894.8863.002.090.500.090.422.080.59312025.445.1
Fly ash52.4424.039.443.201.140.732.242380
Slag33.6714.601.7234.679.890.650.271.952.382860