Processed pozzolanic material for precision construction.
Classified Flyash is processed to achieve controlled fineness and consistent quality, making it the preferred mineral admixture for cement blending, RMC batching, precast products, and high-durability concrete applications.
Processed for controlled fineness and consistent quality
Classified Flyash is a coal combustion byproduct that has been processed through air classification technology to remove coarse and unburnt particles, yielding a fine, uniform powder that meets stringent quality benchmarks.
Unlike raw or pond ash, classified flyash delivers predictable particle size distribution, ensuring reliable performance in cement blending, ready-mix concrete, and precast manufacturing. It fully complies with IS 3812 requirements, making it the preferred choice for quality-conscious producers.
Technical parameters that matter for procurement
Where classified flyash adds value
Cement Blending
Improves workability, reduces heat of hydration, and enhances long-term strength.
Ready-Mix Concrete
Optimizes mix design for pumpability, finishability, and durability.
Precast Products
Enables faster formwork turnaround with improved surface finish.
AAC Blocks
Contributes to lightweight, thermally efficient autoclaved aerated concrete.
Bricks and Pavers
Enhances product strength while reducing cement consumption.
High-Performance Concrete
Supports durability specifications in aggressive environments.
How classified flyash compares to alternatives
| Parameter | Classified Flyash | Pond Ash | GGBS |
|---|---|---|---|
| Processing | Air classified | Recovered from ponds | Ground slag |
| Fineness control | High | Variable | High |
| Quality consistency | Excellent | Moderate | Excellent |
| Cost | Mid-range | Economical | Premium |
| Best for | Cement / RMC / concrete | Bulk fill | Durability-led |
Documentation and testing for procurement confidence
Rockgold provides comprehensive test reports and sampling support for every batch, ensuring full traceability and compliance with IS 3812 specifications for procurement teams.
Test Reports
Batch-specific lab results as per IS 3812.
Sampling Support
Guidance on sampling procedures and protocols.
Compliance Docs
BIS certification and material safety data sheets.
Movement formats for classified flyash
Bulk Tanker
Protected pneumatic transport for cement plants and RMC units.
Jumbo Bags
1-ton FIBC bags for sites with limited handling infrastructure.
Loose Bulk
Economical direct tipping for high-volume consumers.
Project Packaging
Custom lot sizes and labeling for project-specific requirements.
How to order classified flyash from Rockgold
Share Requirement
Product grade, monthly quantity, delivery location.
Receive Fitment Review
Application and specification alignment.
Review Commercial Quote
Pricing based on volume and route.
Confirm Dispatch Plan
Packaging, schedule, and logistics.
Receive Documentation
Test reports, invoices, and dispatch papers.
Common procurement questions about classified flyash
What is the difference between classified and standard flyash?
Classified flyash undergoes additional processing to control particle size distribution, resulting in more consistent quality and better performance in cementitious applications.
What replacement level is typical?
Most cement plants use 15–35% flyash replacement. The exact level depends on the application and mix design requirements.
Is classified flyash suitable for precast?
Yes, the controlled fineness makes it particularly suitable for precast applications where surface finish and early strength gain are important.
What documents are provided?
Test reports as per IS 3812, material safety data sheets, dispatch weighment notes, and invoice documentation.
