Our Products
GGBFS (Ground-Granulated Blast-Furnace Slag)
Ground-granulated blast-furnace slag (GGBFS) is produced by quenching molten iron slag—a byproduct of iron and steel manufacturing from a blast furnace in water to create a granular material.
This product is then dried and ground into a fine powder.
Reduces embodied CO2 in concrete without compromising strength performance and reducing landfill waste. Improves early age strength and drying shrinkage.
Characteristics
When added to concrete, GGBFS enhances several performance characteristics, including:
● Reducing heat of hydration in mass concrete pours.
● Lowering concrete permeability.
● Improving durability and resistance to aggressive
environments.
● Resistant to sulfate attacks, chloride-related corrosion, and
alkali-silica reaction
● One of the greenest construction materials that does not
produce any waste
● Water demand lower by 3-5% compared to OPC
● Cost-efficient
GGBS is mainly used as a partial replacement for cement in concrete. When added as an admixture, it acts as a stabilizing agent and improves the quality of the concrete. In the production of ready-mixed concrete, GGBS replaces a substantial portion of the Portland cement component, generally about 50% to 70%.
GGBFS
conforms to the mandatory requirements of the relevant standards: ASTM C989 / BSEN 15167-1 / UNI EN 197-1
High Performance Slag
Cement High Performance (HP) Slag is a supplementary cementitious material (SCM) that enables reduced CO2 in concrete through increased replacement of GP Cement, without compromising strength performance.
Slag is a premium GGBFS (Ground Granulated Blast Furnace Slag) that fully complies with the requirements for GGBFS Supplementary cementitious materials for use with General Purpose and blended cement.
In addition to the benefits of GGBS, such as reduced heat of hydration, reduced concrete permeability, and enhanced durability, Slag also provides low drying shrinkage and high early age strength. Slag is suitable for premixed and pre-cast concrete applications.
● Enables a significant reduction of embodied CO2 in concrete through increased replacement of Cement
● Reduces waste going to landfill
● High early strength development compared with standard slag
● Potential efflorescence reduction
● Lower drying shrinkage
● Enhanced durability and workability
● Improved resistance to chemical attack and chloride penetration
● Reduced Alkali Aggregate Reactions (AAR).
Applications
01
Ground Granulated Blast-furnace Slag (GGBS) is used to create durable concrete structures in combination with Ordinary Portland Cement (OPC) and other pozzolanic materials.
02
While widely adopted in Europe, GGBS is increasingly used in the United States and Asia due to its superior durability, which can extend the lifespan of buildings from fifty to one hundred years. It is primarily utilized in high-performance concrete production, marine and wastewater infrastructure, and mass concrete pours.
03
Design and development of high-quality cement paste/mortar and concrete.
04
Durable concrete structures constructed in combination with OPC and/or other pozzolanic materials.
Ground Granulated Blast Furnace Slag
(GGBFS) Standard: BSEN 15167
| Test Items | Unit | Result | Standard No. |
|---|---|---|---|
| CaO | % | 44.02 | BS EN 196-2:2013(E) |
| MgO | % | 5.66 | BS EN 196-2:2013(E) |
| SiO₂ | % | 36.55 | BS EN 196-2:2013(E) |
| Al₂O₃ | % | 11.78 | BS EN 196-2:2013(E) |
| TiO₂ | % | 0.54 | BS EN 196-2:2013(E) |
| MnO | % | 0.23 | BS EN 196-2:2013(E) |
| SO₃ | % | 0.07 | BS EN 196-2:2013(E) |
| LOI | % | 0.5 | BS EN 196-2:2013(E) |
| Cl | % | 0.019 | BS EN 196-2:2013(E) |
| Bulk Density | g/cm3 | 2.85 | BS EN 196-2:2013(E) |
| Insoluble Residue | % | 0.23 | BS EN 196-2:2013(E) |
| H2O | % | 0.06 | BS EN 15167-1:2006 |
| Specific Surface | cm2/g | 4340 | BS EN 196-6:2018 |
| Activity Index (28 days) | % | 96 | BS EN 15167-1:2008 |
| Activity Index (7 days) | % | 102 | BS EN 15167-1:2008 |
| Initial Setting Time Ratio | % | 103 | BS EN 15167-1:2008 |
| Flow Ratio | % | 108 | GB/T 18046-2017 |
| Glass | % | 98.7 | GB/T 203-2008 |
| Radioactive Specific Activity (K-40) | Bq/Kg | 425.7 | GB 6566-2010 |
| Radioactive Specific Activity (Ra-226) | Bq/Kg | 100.1 | GB 6566-2010 |
| Radioactive Specific Activity (Th-323) | Bq/Kg | 66.0 | GB 6566-2010 |
| Internal exposure index IRa | / | 0.5 | GB 6566-2010 |
| External exposure index Iy | / | 0.6 | GB 6566-2010 |
Packing
● Packed in big bags each of 1000 – 1500 kg.
● Bulk in silo trucks.
Contact Us
- 9thFL, 2Unit, Building 21, Sunshine Holiday, Port Area, Fangchenggang, Guangxi Province, China.
- +86 138 0115 7116
- info@gxmicrosilica.com