| Feature |
OPC |
ABS Cement |
| Worldwide usage |
Not used in Developed Countries i.e. USA, UK etc, for general building applications without the use of some sort of addititives |
This type is used Worldwide. All the Multi-Storied buildings,Dams,Barrages,
Bridges, Harbors etc in the world are generally
this type of cement
70% of world's cement is made this way |
| Surface area (Fineness) |
Low, 2800- 3000 Blaine's |
HIGHEST in INDIA, 4400-4700 Blaine's.
Our Cement Mill is of International standards. |
Strength |
Fast setting, but gains in strength for weeks only. 33,43,53 MPa after 28 days, depending on grade |
Faster than OPC 33 (due to fineness), & gains in strength for YEARS. 30 % after First Year (NCCBM). Gains upto 43+ MPa after 28 days. Can make Grades upto 75+ MPa |
| Finishing |
Not as smooth due to lower Fineness |
Smoother finish on the walls and concrete. 40% LESS Paint Consumption.
P.O.P. finish is not required. |
|
Chemical Properties. |
Walls are discolored due to the
liberation of calcium hydroxide
& other chemicals |
Chemically Inert. Walls remain the same forever &ever |
| Resistance to Cracks |
Receptive to Shrinkage &thermal cracks |
Highly resistant. No more spiders' webs Low heat of hydration. Extreme PLASTICITY |
| Effect of atmosphere,
Gases, fumes acids,
alkali fungi etc |
Affected |
Highly resistant. Preferred cement for coastal areas (Sulphate resistant). MUST FOR BASEMENTS. |
| Life of building |
60-100 years, depending on the Maintenance.The atmosphere rusts Iron & the first sign of decay surfaces along the ledges as the concrete starts peeling off the rusted reinforcement rods. |
150-250 years. Due to lesser (The pores are fewer & concrete is impermeable & dense). Also AGEING is SLOWER. ALWAYS PASSES
the AGEING TEST (AUTOCLAVE) |