1. PORTLAND CEMENT is binding material in the form of a finely ground powder, usually gray, that is manufactured by burning and grinding a mixture of limestone and clay or limestone and shale.

2. History Portland Cement British Cement Roman Cement Hydraulic Limestone

3. TYPES OF CEMENT

4. Mostly used in general construction (most buildings, pavements, precast units, etc) GENERAL PURPOSE

5. This type of cement is used in structures exposed to soil or water containing sulfate ions SULFATE RESISTING CEMENT

6. This type of cement is used rapid construction, cold weather concreting. HIGH EARLY STRENGTH

7. It is most suitable for massive structures such as dams. LOW HEAT PORTLAND CEMENT

8. Widely used for decoration. WHITE PORTLAND CEMENT