... -1999 Package:25Kg bag,1000Kg bag Improved rapid-hardening sulphoaluminate cementThe product obtained by grinding cement clinker ... be blended with clinker during manufacture of improved rapid-hardening sulphoaluminate cement. It has high early strength. The ... time, improve the concrete workability, early strength, rapid hardening, freeze-resistance, impermeability and little expansion etc..3.Improving ...