Fly Ash Supplier & Wholesaler in Agra, Meerut, Uttar Pradesh

Fly Ash

Description

Fly ash is a byproduct from the combustion of pulverized coal in thermal power plants. It is composed of fine particles that are carried out of the boiler with the flue gases. Here are some key points about fly ash:

Composition

Silicon Dioxide (SiO₂): One of the primary components, it gives fly ash pozzolanic properties.
Aluminum Oxide (Al₂O₃): Contributes to the overall chemical stability.
Iron Oxide (Fe₂O₃): Adds to the material's strength.
Calcium Oxide (CaO): Its presence can make the fly ash either low-calcium (Class F) or high-calcium (Class C).

Types

Class F: Produced from burning anthracite or bituminous coal, has pozzolanic properties, and is used in concrete to improve its strength and durability.
Class C: Produced from burning lignite or sub-bituminous coal, has both pozzolanic and self-cementing properties, and can be used in concrete without the need for additional cement.

Properties

Particle Size: Generally spherical and very fine, similar to or smaller than Portland cement particles.
Color: Varies from tan to dark gray, depending on the chemical and mineral constituents.
Specific Gravity: Typically ranges from 2.1 to 3.0.
Pozzolanic Activity: Reacts with calcium hydroxide in the presence of water to form compounds possessing cementitious properties.

Uses

Concrete Production: Improves workability, reduces water demand, and enhances the long-term strength and durability of concrete.
Cement Replacement: Partially replaces Portland cement, leading to cost savings and reduced carbon footprint.
Soil Stabilization: Used to improve the properties of soil for construction purposes.
Road Base and Subbase: Acts as a filler material to improve the load-bearing capacity of roads.

Environmental Impact

Waste Reduction: Utilization in construction helps in reducing the amount of fly ash that needs to be disposed of in landfills.
Carbon Footprint: Using fly ash in concrete production reduces the need for Portland cement, which is energy-intensive to produce.

Health and Safety

Respirable Dust: Inhalation of fine particles can pose respiratory hazards, requiring proper handling and protective measures.
Trace Metals: May contain trace amounts of heavy metals, requiring careful management to avoid environmental contamination.

Fly ash is a valuable resource in various industries, especially in construction, due to its beneficial properties and environmental advantages.