The product obtained by grinding cement clinker obtained by roasting suitable raw material, consisting essentially of anhydrous calcium sulpho aluminate and dicalcium silicate. Suitable gypsum and 0-10% limestone shall be blended with clinker during manufacture of rapid-hardening sulpho aluminate cement. The product is hydraulicity binding material. It has high early strength. The code no is R-SAC and with four grades. This kind of cement has many excellent performances, such as high strength, rapid hardening, resistance to corrosion, frost resistance, impermeability and carbonation resistance.

Main Specification

Specific surface area(㎡/kg): ≥350

Setting time (min): initial setting time: ≥25

Final setting time: ≤180

Grade	Compressive strength (Mpa)			Bending strength (Mpa)
	1d	3d	28d	1d	3d	28d
42.5	33.0	42.5	45.0	6.0	6.5	7.0

 

Properties

1) High early strength and Rapid setting time properties

Its compressive strength can reach 35-50Mpa within 1 day, 50-70Mpa after 3 days, and it also can grows continually with the increasing of curing age. According to customer’s demand the initial compressive strength can be adjusted.

2) High frost resistance property:

If used at the temperature as low as 0-10℃,which early strength is 5-6 times than that of OPC; if used in 0-20℃ with little admixture, its strength in 3-7d can reach 70-80% of designed strength, with very little strength loss after 300 times of froze-thaw circle.

3) High seepage resistance: because of the cement texture is fine and close, the impermeability of the concrete is 3 times that of OPC (silica cement) in same grade.

4) Anti-carbonation property: it has good anti-carbonation property, and low dry-shrinkage.

5) Corrosion resistance: it has good corrosion-resistance quality, especially much better in seawater corrosion resistance than that of sulphate resistant cement (SRC, high anti sulphate Portland cement), with more than 1 corrosion-resistance coefficient. 

Properties

1) High early strength and Rapid setting time properties

Its compressive strength can reach 35-50Mpa within 1 day, 50-70Mpa after 3 days, and it also can grows continually with the increasing of curing age. According to customer’s demand the initial compressive strength can be adjusted.

2) High frost resistance property:

If used at the temperature as low as 0-10℃,which early strength is 5-6 times than that of OPC; if used in 0-20℃ with little admixture, its strength in 3-7d can reach 70-80% of designed strength, with very little strength loss after 300 times of froze-thaw circle.

3) High seepage resistance: because of the cement texture is fine and close, the impermeability of the concrete is 3 times that of OPC (silica cement) in same grade.

4) Anti-carbonation property: it has good anti-carbonation property, and low dry-shrinkage.

5) Corrosion resistance: it has good corrosion-resistance quality, especially much better in seawater corrosion resistance than that of sulphate resistant cement (SRC, high anti sulphate Portland cement), with more than 1 corrosion-resistance coefficient.