Frost Resistance of Desert Sand Concrete

Table 1

Basic performance indexes of cement.

Cement setting time (min)		Rupture strength (MPa)		Compressive strength (MPa)		Fineness (%)	Ignition loss (%)	MgO (%)	SO3 (%)
Initial time	Final time	3 d	28 d	3d	28 d	5.0	3.88	1.82	3.02
142	198	5.8	7.9	28.2	52.7