Rock Plugs
Rock Plugs
Due to its high density the application of this steelworks co-products has proved to be very effective in this type of containment works. The dead weight of the LD In Natura Slag (steel slag) is up to 70% higher than the one from stony aggregates, thus resulting in a high quality supporting wall. In addition, it's worth mentioning its low-cost installation and maintenance, high draining power, excellent external appearance, besides preserving the natural resources.
Rip-Rap embankments
Another application for the LD Converter Slag is in the construction of rip-rap for protecting banks and stabilizing rising grounds, resulting in excellent jobs in terms of quality and stability due to its high density and cementing power. For this application, it's possible to utilize either the LD NP Slag (BOFS and Skimmer Slag) or LD In Natura Slag. Its higher density demands less volume of material, thus being more economical and preserving the natural resources.
Cement and Concrete
The so-called Granulated Blast Furnace Slag - GBFS has a large number of applications in this field, which brings lots of benefits for the constructions made of concrete with slag using binder, aggregate or addition.
The cements that utilize crushed GBFS in their compositions are the CP II (the most produced and consumed in Brazil) and the CP III. The Blast Furnace Slag partially replaces the clinker in cement production due to its cementing properties (hydraulicity), besides contributing to the final quality of that product.
Applications of the CP IIConventional structural concretes for roof slabs, beams, pillars and foundations; all types of mortars; structural concrete for floor areas; concrete for counter-floor; fibrocement (water reservoirs and roofing tiles); etc.
| ACRONYM | CLINKER + PLASTER | SLAG | CARBONATE MATERIAL |
|---|---|---|---|
| CP-II E | 56-94% | 6-34% | 0-10% |
Applications of the CP III
The CP III provides a higher final resistance and lower hydration heat when compared to other cements of the same type, having lower contents of GBFS addition (evidence proved by lab testing). Moreover, there is the great advantage of producing less porous concretes (better workability), a factor that contributes to impede the attack of sulfates (in case of 60% to 70% of slag in its composition) and, consequently, deterioration of the structure, besides being recommended to avoid the alkali-aggregate reaction. Therefore, it is suitable for aggressive environments that require great resistance and quality of the concrete:
- Sanitation works (wastewater-channeling);
- Foundations and roof slabs with prestressed and/or ribbed concrete;
- Floor areas for industrial, rural and sanitary installations;
- Tunnels and galleries;
- Water treatment plants;
- Chemical industry;
- Maritime engineering (ports);
- Roll-compacted concrete for pavements;
- Dams;
- Bridges, etc...
| ACRONYM | CLINKER + PLASTER | SLAG | CARBONATE MATERIAL |
|---|---|---|---|
| CP-III | 25-65% | 35-70% | 0-5% |
NOTE: CP-III RS (sulfates-resistant), 60 to 70% slag (NBR 5737).
Concrete Artifacts
Several studies and experiments are currently being carried out with a view to develop new alternative applications for the GBFS. A field of great interest is the concrete artifacts, for example, the pre-molded blocks of concrete, where studies already accomplished have shown the feasibility for the application of GBFS, thus replacing the usual materials.
Siderúrgica produtora de placas de aço, aços planos, bobinas e laminados a quente.
