Resistance of Recycled Aggregate Concrete (RAC) Subjected to Drying-Wetting Cycles to Attack of Magnesium and Sodium Sulfates

Table 1

Some physical and chemical properties of cement used.

Chemical properties		Physical properties
CaO	62.61%	Initial setting time	120 min.
SiO2	18.79%
Al2O3	4.79%	Final setting time	4 hr. 34 min.
Fe2O3	3.48%
MgO	2.35%	3 days compressive strength	17 MPa
K2O	0.09%
Na2O	0.18%	7 days compressive strength	26 MPa
SO3	2.47%
Loss on ignition (L.O.I)	3.00%
Insoluble residue	1.28%