Fly Ash

Product Description: Fly Ash

Overview

Fly ash is a fine, powdery material that is a by-product of burning pulverized coal in electric power generation. It is widely used in construction and engineering applications due to its pozzolanic properties, which enhance the performance and durability of concrete and other building materials.

Uses

• Concrete Production: Used as a supplementary cementitious material (SCM) to improve the strength, durability, and workability of concrete.

• Cement Manufacturing: Blended with Portland cement to produce blended cements.

• Soil Stabilization: Enhances the load-bearing capacity and stability of soil in road construction and embankments.

• Mine Reclamation: Used to fill voids and stabilize abandoned mine shafts.

• Geopolymer Production: Utilized in the production of geopolymer concrete, which is more environmentally friendly than traditional concrete.

• Autoclaved Aerated Concrete (AAC): Serves as a raw material in the production of lightweight building blocks and panels.

Specifications

• Material Composition: Composed mainly of silica, alumina, iron oxide, and calcium oxide.

• Types: Classified into Class F (low calcium) and Class C (high calcium) based on its chemical composition.

• Fineness: Particle size typically ranges from 10 to 100 microns, with a specific surface area of about 300-500 m²/kg.

• Pozzolanic Activity: Reacts with calcium hydroxide to form calcium silicate hydrate, contributing to the strength and durability of concrete.

• Color: Usually gray or tan, depending on the coal source and combustion conditions.

• Density: Bulk density ranges from 500 to 800 kg/m³.

• Packaging: Available in bulk, bags, or as a slurry.

Benefits

• Improved Concrete Properties: Enhances the workability, strength, and durability of concrete.

• Cost-Effective: Reduces the amount of Portland cement needed, lowering construction costs.

• Sustainability: Recycles industrial waste, reducing landfill use and conserving natural resources.

• Enhanced Durability: Provides resistance to sulfate attack, alkali-silica reaction (ASR), and reduces permeability.

• Thermal Benefits: Improves thermal insulation properties of concrete.