GGBFS Slag – High Fineness Ground Granulated Blast Furnace Slag for Concrete and Cement

GGBFS slag (ground granulated blast furnace slag) is a high fineness, concrete grade mineral additive widely used in cement blending and high-performance concrete. Material is selected for consistent fineness, low chloride content, and reliable performance in demanding applications such as marine concrete, precast elements, and mass concrete pours. Microfine and Grade 120 GGBFS options are suitable for high strength concrete applications, sulfate-resistant mixes, and low heat of hydration requirements. Uniform particle size and controlled quality support compatibility with OPC cement blends and blended cement formulations. Bulk shipments are prepared for international buyers seeking dependable GGBFS slag for infrastructure, ready-mix, and construction projects across global markets. We export GGBFS slag—also known as ground granulated slag, blast furnace slag powder, or slag cement material—to international buyers requiring a reliable cement additive or cement replacement for concrete and blended cement applications. This hydraulic slag powder is processed to achieve uniform fineness and stable chemical composition suitable for structural and infrastructure use. The material functions as a pozzolanic and latent hydraulic binder, widely used in cementitious systems where durability, permeability control, and long-term strength are required. Shipments are prepared for buyers seeking consistent grade material and performance suitable for global construction standards.

Technical Specifications

Typical export lots are prepared to meet internationally recognized parameters used in concrete grade slag and durable concrete slag applications.

Key technical considerations include:

• High fineness GGBFS or microfine slag depending on application requirements

• Low chloride slag and low alkali slag variants where durability or corrosion control is critical

• Low LOI slag and controlled moisture slag for predictable blending performance

• High glass content blast furnace slag powder for improved hydraulic reactivity

• Narrow particle size distribution to ensure uniform hydration and workability

• Material suitable for low permeability slag and high strength slag concrete systems

Grades commonly handled include Grade 100 slag, Grade 120 slag, and custom performance ranges aligned with project specifications.

Size Range and Grading

Material is classified and tested to ensure uniform particle size GGBFS for blending and compatibility with various cement and admixture systems.

Export grades may include:

• Fine slag powder for standard blending

• Microfine GGBFS for ultra high performance concrete

• High fineness slag for smooth concrete finish

• Ground slag for high fineness cement replacement

Grading tolerances and fineness targets are confirmed prior to shipment, allowing buyers to select material suited to specific mix designs and climatic conditions.

Quality and Inspection

Quality control focuses on consistency and suitability for engineering applications rather than marketing specifications.

Inspection parameters may include:

• Chemical composition and glass content

• Fineness and moisture levels

• Loss on ignition (LOI)

• Particle size distribution

• Performance indicators aligned with GGBFS meeting Grade 100 performance requirements or higher classifications

Where required, independent inspection agencies can verify material prior to loading to support buyer compliance and project documentation.

Applications and Industry Use

Ground granulated slag for cement blending is widely used across:

• Ready-mix concrete plants

• Precast and block manufacturing

• Infrastructure and transportation projects

• Marine and coastal construction

• Industrial flooring and mass foundations

Typical use cases include:

• GGBFS for high strength concrete applications

• GGBFS suitable for mass concrete pours

• Ground slag for low heat of hydration in large pours

• Slag for improving concrete durability and strength

• Slag powder suitable for marine structures concrete

• Slag powder for infrastructure and bridges concrete

• GGBFS for roller compacted concrete applications

• Slag for blended cement high durability

Material is also used in sustainable construction, including GGBFS for low carbon cement formulations.

Technical Suitability and Compatibility

Export lots are selected to ensure compatibility with modern concrete systems:

• GGBFS compatible with OPC cement blends

• GGBFS compatible with fly ash blends

• Slag cement additive for ready mix concrete

• Fine GGBFS for precast and blocks

For specialized engineering environments:

• Low chloride GGBFS for marine concrete

• GGBFS for sulfate resistant concrete mixes

• GGBFS suitable for hot weather concreting

These properties support long service life in aggressive exposure conditions.

Performance Expectations

When properly incorporated in mix design, buyers typically use GGBFS for long term strength gain concrete and durability improvements such as:

• Reduced permeability

• Improved resistance to sulfate attack

• Controlled heat generation

• Extended service life of reinforced concrete

Performance consistency is supported by supplying uniform quality GGBFS for bulk concrete use and consistent fineness GGBFS for ready mix operations.

Packaging, Handling, and Shipment Readiness

Material can be prepared for international transport in:

• Jumbo bags

• Bulk tanker loading

• Containerized bulk liner systems

Handling practices include:

• Protection from moisture ingress

• Controlled loading to maintain uniform particle size GGBFS for blending

• Proper sealing and labeling for port handling

Storage recommendations for buyers:

• Store in dry, covered areas

• Avoid prolonged exposure to humidity

• Rotate stock to maintain reactivity and flow characteristics

Logistics and Export Process

As an Indian exporter, shipments are coordinated through major ports such as:

• Mundra

• Kandla

• Nhava Sheva (JNPT)

• Chennai or Visakhapatnam, depending on origin and routing

We work with international buyers under standard Incoterms including FOB, CFR, and CIF, with clear freight and insurance coordination where required.

Bulk vessel, breakbulk, or container shipment planning is arranged according to order volume and destination port conditions.

Documentation and Compliance

Export documentation is prepared to support customs clearance and project traceability, including:

• Commercial invoice and packing list

• Certificate of origin

• Test reports and inspection certificates

• Bill of lading

• HS code classification aligned with cementitious materials

Compliance with destination-country import requirements and port procedures is coordinated to minimize clearance delays.

Buyer Support

International buyers often require technical alignment before procurement. Support may include:

• Assistance in selecting Grade 120 GGBFS for precast concrete or infrastructure mixes

• Clarification of grading tolerances and fineness ranges

• Coordination with third-party laboratories or inspection agencies

• Guidance on logistics, port selection, and shipment scheduling

Our role is to ensure buyers receive material suited to their operational context, whether for ready-mix plants, precast production, or large infrastructure projects.

Contact for Specifications and Shipment Planning

International buyers, contractors, and sourcing teams may request:

• Detailed technical specifications

• Available grades and fineness ranges

• Packaging and loading options

• Current shipment schedules and port availability

Enquiries can be submitted with project requirements, target grade, and destination port to receive grading details and shipment information.

FAQ

Q1. What is GGBFS and how is it used in construction?

Ground Granulated Blast Furnace Slag (GGBFS) is a finely ground cementitious material used as a partial replacement for Portland cement. It is commonly incorporated into concrete and blended cement to improve durability, control heat of hydration, and support long-term strength development.

Q2. What grades of GGBFS are typically available for export?

Common internationally recognized grades include Grade 100 and Grade 120, along with customized fineness ranges depending on project requirements, concrete design, and performance targets.

Q3. What industries commonly use GGBFS?

GGBFS is widely used in:

• Ready-mix concrete production

• Precast and block manufacturing

• Infrastructure and transportation projects

• Marine and coastal construction

• Industrial and commercial flooring

• Mass concrete foundations and dams

Q4. How is GGBFS quality verified before shipment?

Quality verification typically includes:

• Chemical composition analysis

• Fineness testing

• Moisture and loss on ignition (LOI) checks

• Particle size distribution

• Glass content evaluation

Independent third-party inspection can be arranged when required by the buyer.

Q5. What performance benefits does GGBFS provide in concrete?

When properly used in mix design, GGBFS can contribute to:

• Reduced permeability

• Improved resistance to sulfate attack

• Lower heat of hydration in mass pours

• Enhanced long-term strength

• Increased durability in aggressive environments

Actual results depend on mix design, curing practices, and application conditions.

Q6. Is GGBFS compatible with other cementitious materials?

Yes. GGBFS is commonly used with:

• Ordinary Portland Cement (OPC)

• Fly ash

• Other supplementary cementitious materials

Compatibility is normally confirmed through laboratory mix trials or engineering specifications.

Q7. What fineness or particle size ranges are available?

Fineness can be adjusted to suit different applications, including standard concrete blending, precast production, or higher-performance mixes. Specific fineness values and tolerances are provided in technical data sheets prior to shipment.

Q8. What packaging options are available for international shipments?

Common export packaging methods include:

• Jumbo bags (FIBC)

• Bulk tanker loading

• Containerized bulk liner systems

The appropriate method depends on order volume, handling facilities at the destination port, and buyer preference.

Q9. How should GGBFS be stored after delivery?

Recommended storage practices include:

• Keep material in dry, covered storage areas

• Protect from moisture and humidity

• Use sealed silos or lined storage systems where possible

• Follow stock rotation to maintain consistent performance

Q10. What shipment volumes can be arranged?

Shipments may be arranged in:

• Container loads for smaller quantities

• Bulk vessel shipments for large infrastructure projects

Shipment planning depends on port availability, order size, and delivery schedules.

Q11. Which ports are commonly used for exporting GGBFS from India?

Exports are typically routed through major ports such as:

• Mundra

• Kandla

• Nhava Sheva (JNPT)

• Chennai or Visakhapatnam

Port selection depends on cargo origin, vessel availability, and destination.

Q12. What Incoterms are normally used in GGBFS export contracts?

Commonly used Incoterms include:

• FOB (Free on Board)

• CFR (Cost and Freight)

• CIF (Cost, Insurance, and Freight)

Terms are finalized based on buyer preference and shipping arrangements.

Q13. What documentation is provided with export shipments?

Standard export documentation may include:

• Commercial invoice

• Packing list

• Certificate of origin

• Bill of lading

• Technical test reports

• Inspection certificates when required

HS code classification and compliance documentation are prepared to support customs clearance.

Q14. Can third-party inspection be arranged before shipment?

Yes. Independent inspection agencies can verify quality, quantity, and packaging before loading, if required by the buyer or project specifications.

Q15. How is consistency maintained across shipments?

Consistency is managed through:

• Controlled sourcing and grading

• Batch testing and lot traceability

• Standardized loading and handling procedures

Technical data and test reports are provided for each shipment lot.

Q16. Is GGBFS suitable for marine or sulfate-resistant concrete?

Yes, GGBFS is commonly used in marine structures, coastal infrastructure, and sulfate-exposed environments when incorporated correctly in the mix design.

Q17. Can GGBFS help reduce the carbon footprint of cement?

GGBFS is frequently used in blended cement and concrete formulations to reduce clinker consumption, supporting lower embodied carbon in construction projects.

Q18. How is shipment scheduling coordinated for international buyers?

Shipment schedules are planned based on:

• Order quantity

• Packaging method

• Vessel or container availability

• Port logistics and transit time

Buyers receive loading schedules and shipping documents in advance.

Q19. What information should a buyer provide when requesting a quotation?

To prepare an accurate quotation, buyers typically share:

• Required grade or fineness

• Monthly or total quantity

• Packaging preference

• Destination port

• Preferred Incoterms

This helps align pricing, logistics, and shipment planning.

Q20. How can international buyers request technical details or shipment information?

Buyers may submit project requirements, technical specifications, or target shipment schedules to receive:

• Detailed specifications

• Available grades and fineness ranges

• Packaging options

• Estimated shipment timelines

Requests can be reviewed and responded to with relevant technical and commercial information suitable for procurement evaluation.

Q21. Which regions or countries do you typically export GGBFS to?

Ground Granulated Blast Furnace Slag (GGBFS) from India is supplied to concrete producers, cement grinding units, infrastructure contractors, and construction material distributors in various international markets. Exports are arranged based on bulk shipping feasibility, project demand, and port logistics.

Shipments are commonly handled for buyers in:

• South and Southeast Asia – including Bangladesh, Sri Lanka, Vietnam, Thailand, and Indonesia, where GGBFS is widely used in blended cement and ready-mix concrete
• Middle East – including United Arab Emirates, Saudi Arabia, Oman, and Qatar, particularly for infrastructure, marine, and large civil works
• East Africa and Indian Ocean region – including Kenya, Tanzania, and nearby markets with growing cement and construction sectors
• Europe and Mediterranean markets – including Italy, Spain, and Turkey, depending on freight economics and project demand. For export inquiries, you can contact us directly at +91-8827323377 (WhatsApp & Call Support)

Actual destinations vary with project schedules, vessel availability, and import regulations. Technical documentation and compliance requirements are reviewed according to the standards applicable in the importing country.