Cement Products
High Blast Furnace Slag Cement CEM III
High Blast Furnace Slag Cement Cem III A
- High Blast Furnace Slag is an advanced Portland cement product that is modified by the substitution of a major ratio of Portland cement clinker by high blast furnace slag to improve durability properties of concrete
- It is produced by replacing a specific percentage of clinker with Ground Granulated High Blast Furnace Slag (GGBS) that is a byproduct in the production of steel industry
- Ground granulated High Blast Furnace Slag (GGBS) has distinctive cementitious properties that improve the structural composition of concrete by its delayed reaction with the hydration products of Portland cement components
- This latent pozzolanic reaction consumes the calcium hydroxide resulted in the main hydration reaction to form additional forms of calcium silicate hydrate or cement gel compounds (C-S-H)
- The type of ground granulated iron slag (High Blast Furnace Slag) used in the production of this cement has a weak particles crystalline glassy phase structure, with high reactivity with water and calcium hydroxide
Chemical Composition | |
|---|---|
Portland Cement Clinker | 65% to 70% |
Ground Granulated Blast Furnace Slag | 24% to 26% |
Gypsum | 4% to 6% |
Advantages
High blast furnace slag cement improves the concrete durability properties in the following aspects:
01
Elevating density of concrete matrix structure & the major reduction in voids ratio to boost the concrete durability against the external harsh environmental exposures.
02
Reducing heat of hydration generated in the early ages of concrete life (1st. 5 Days after mixing).
03
Minimizing thermal cracking of concrete section.
04
Maximizing resistance of penetration of dissolved sulfate salts in groundwater in addition, chloride ions present in the soil and coastal atmosphere.
05
Providing High impermeability Concrete.
Uses and
Applications
01
Mixing Concerts with High durability requirements
02
Massive concrete structure
03
Marin environment & coastal areas reinforced concrete structures of Ports structure, Diaphragm walls, quays etc.
04
Water impermeability Structures like dams, Barrages & irrigation structures.
Chemical Composition – Test Method EN 196·2 | Component | Results Range | Unit | Standard Requirements According to |
|---|---|---|---|---|
ES4756·1/2013 & EN197-112011 | ||||
Silicon Dioxide | Si02 | 25.50 | % | – |
Aluminum Trioxide | AI203 | 7.44 | % | – |
Ferric Oxide | Fe203 | 4.34 | % | – |
Calcium Oxide | CaO | 49.80 | % | – |
Magnesium Oxide | MgO | 2.55 | % | – |
Sulfate | S03 | 2.55 | % | – |
Potassium Oxide | K20 | 0.52 | % | – |
Sodium Oxide | Na20 | 0.45 | % | – |
Chloride | CI | 0.054 | % | – |
Insoluble Residue | IR | 2.02 | % | 5.00% / 0 max |
Loss on ignition | LOI | 1.27 | % | 5.00% / max |
Free Lime | F.L | 1.60 | % | – |
Alkalis Equivalent | AE | 0.79 | % | – |
Physical and Mechanical Properties | Results Range | Unit | Standard Requirements According to |
|---|---|---|---|
Compressive Strength. Test Method EN 196-1 | ES4756·1/2013 & EN197-112011 | ||
2 days | 20-23 | N/mm² | 10.0 (N/mm2) / Min. |
7 days | 31-35 | N/mm² | |
28 days | 48-52 | N/mm² | 42.5 (N/mm2) / Min. |
Setting Time -Test Method EN 196·3 | ES4756·1/2013 & EN197-112011 | ||
Initial setting time | 180-220 | Minutes | 60 minutes / Min. |
Final setting time | 4:30 | Hours | Not specified |
Water consistency | 28-33 | % | Not specified |
Standard Requirements According to | |||
Soundness -Test Method EN 196-3 | ES4756·1/2013 & EN197-112011 | ||
Expansion | 1.00 | mm | 10mm / Max |
Fineness by Blaine | 4500-4800 | Cm’/ gm | |