Maha Cement - Portland Slag Cement (PSC)
Maha – Portland Slag Cement (PSC), conforming to the IS 455-1989, is manufactured from high-quality clinker and superior quality granulated blast furnace slag. The slag used contains more than 95% glass content – the most desired parameter to manufacture PSC. The unique feature of our Grinding Units used for manufacturing this cement is the Vertical Roller Mills (VRM) – the most modern technology imported from LoescheGmBH, Germany. The clinker and slag are separately ground to reach high fineness level and then blended in a high-efficiency mechanical blender. This has not only enabled us to achieve high fineness (Blaine 3700+ cm2/g) in our Maha Cement but also steep particle size distribution (PDS) which helps Maha Cement achieve high early strength and excellent durability properties in concrete.
Maha Cement is best for all types of constructions. It is especially recommended in regions where the structure is exposed to harsh environmental conditions.
The advantages of using Maha – Portland Slag Cement (PSC)
Higher strength and high durability
Improved workability and consistency
Progressive increase in strength over the years
Higher resistance to corrosion
Maximum resistance to alkalis and sulphates attack
Smooth Surface finish – no surface cracks
Low Heat of Hydration – most suitable for mass concrete work
Ideal for both concreting and plastering
Please refer to the below table for its typical values as against requirement as per IS 455.
|Physical Requirements||Requirement as per lS 455||MAHA CEMENT PSC|
|Fineness||Specific Surface (m2/kg)||225 (min)||330-600|
|Setting Time||a. Initial minutes)||30 (min)||180-200|
|b. Final (minutes)||600 (max)||280-300|
|Soundness||Expansion of unaerated cement|
|a. By LeChatelier Method (mm)||10 (max)||0.0-1.5|
|b. By Auto Clave (%)||0.8 (max)||0.04-0.08|
|Compressive Strength||a. 72 ± 1 hr i.e. 3 days (M Pa)||16 (min)||24-26|
|b. 168 ± 2 hr i.e. 7 days (M Pa)||22 (min)||36-38|
|c. 672 ± 4 hr i.e. 28 days (M Pa)||33 (min)||56-58|
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