- TYPES OF CEMENT
- RAPID HARDENING CEMENT:
- IS CLOSE TO PORTLAND CEMENT(OPC). IT CONTAINS TRICALCIUM SILICATE C3S AND FINER GRINDING. IT GIVES GOOD STRENGTH AT EALY STAGE THAN OPC. THE STRENGTH OBTAINED BY THE CEMENT AT 3DAYS IS SAME AS 7DAYS FROM OPC
- THE USE OF THIS CEMENT IS WE CAN REMOVE THE FORMWORK AT FASTER TIME.
- LOW HEAT CEMENT
- IS MANUFACTURED BY INCREASING THE PROPOTtION OF C2S AND DECREASING C3S Tricalcium Silicate AND C3A
- THIS CEMENT IS LESS REACTIVE AND ITS INITIAL SETTING IS GREATER THAN OPC
- IS USED IN MASS CONCRETE CONSTRUCTION
- SULFATE RESISTING CEMENT
- IS MADE BY REDUCING C3A AND C4AF
- THEY EXCELLENT RESISTANCE TO SULFATE ATTACK
- WHITE CEMENT
- IS A ORDINARY PORTLAND CEMENT WHICH IN COLOR CONTENTS AND STRENGTH HAS SAME AS OPC
- TO GET WHITE COLOR IRON OXIDE CONTENT IS REDUCED
- LIMESTONE AND CHINA CLAY ARE USED.
- THEY ARE USED IN DESIGNING IN INTERIOR AND EXTERIOR DECORATIVE FLOORING TILES ETC...
- PORTLAND POZZOLANA CEMENT
- BY GRINDING CLINKERS POZZOLANA WITH GYPSUM OR CALCIUM SULFATE
- IT LIBERATES LESS HEAT OF HYDRATION AND HAS GOOD RESISTANCE TO CHEMICAL ATTACK THAN OPC
- SO CONCRETE MADE WITH PPC IS CONSIDERED GOOD.
- HYDROPHOBIC CEMENT
- IS PRODUCED BY ADDING WATER REPELLANT CHEMICALS TO OPC IN GRINDING PROCESS
- WHEN CEMENT STORED IN MONSOON DOES NOT GET SPOILED
- IT IS USED IN CONSTRUCTION OF DAMS, WATER TANKS, WATER RETAINING STRUCTURE.
- COLORED CEMENT
- BY ADDING 5-10% MINERAL PIGMENT WITH PORTLAND CEMENT DURING GRINDING
- THIS IS USED IN INTERIOR AND EXTERIOR DECORATIVE WORKS
- WATER PROOF PORTLANDCEMENT
- BY MIXING ORDINARY OR RAPID HARDENING CEMENT
- SMALL AMOUNT OF Ca Al ETC AT THE TIME OF GRINDING
- IT IS USED IN CONSTRUCTION OF TANKS, SWIMMING POOL, DAMS, AND BRIDGES.
- PORTLAND BLAST FURNACE CEMENT
- CLINKERS ARE ADDED WITH 65% OF BLAST FURNACE SLAG FOR GRINDING
- CEMENT IS USED IN MASS CONCRETE WORKS SUCH AS DAMS BRIDGES CONSTRUCTION IN SEA WATER
- AIR ENTERNING CEMENT
- BY ENTERING AGENTS SUCH AS RESINS, GLUES, SODIUM SALTS OF SULFATE WITH ORDINARY PORTLAND CEMENT.
- EXPANSIVE CEMENT
- WILL NOT SHRINK DURING AND AFTER HARDENING BUT EXPANDS WITH TIME IS CALLED EXPANSIVE CEMENT
- HIGH ALUMINA CEMENT
- A SPECIAL CEMENT PRODUCED BY MIXING BAUXITE AND LIME AT SOME TEMPERATUE
- COMPRESIVE STRENGTH IS VERY HIGH AND MORE WORKABLE THAN OPC
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