Class F Fly Ash Powder

Class F fly ash powder is a kind of fly ash that is made by burning anthracite or bituminous coal in power plants. It is a byproduct of the combustion process and is collected from the flue gases by electrostatic precipitators or other mechanical means. We are one of the Best Class F fly ash powder suppliers in India at a low price. We also provide Class C fly ash powder in India. Class F fly ash powder price is Rs 3/kg.

F Grade fly ash powder

Class F fly ash powder is characterized by its low calcium oxide (CaO) content, typically less than 10%. It is also rich in silica, alumina, and iron oxide. Because of its chemical composition, F Grade fly ash powder is commonly used as a supplementary cementitious material (SCM) in concrete. 

When used in concrete, Class F fly ash powder reacts with calcium hydroxide (Ca(OH)2) in the presence of water to form calcium silicate hydrates (C-S-H), which are the main binding agents in concrete. This results in denser and more durable concrete that is less susceptible to cracking, shrinking, and erosion. Class F fly ash powder can also improve the workability of concrete and reduce its permeability, which enhances its resistance to water and chemicals.

Overall, Class F fly ash powder is a sustainable alternative to traditional cement that can reduce the carbon footprint of construction activities while also improving the performance and durability of concrete structures.

Class F Fly Ash Powder Uses

• Concrete Production: Class F fly ash powder is extensively used as a partial replacement for Portland cement in the production of concrete. It is added to the concrete mix to improve workability, reduce water demand, enhance long-term strength, and increase the resistance to chemical attacks.
• Blended Cement: F Grade fly ash powder is commonly used as an ingredient in blended cement formulations. Blended cement combines fly ash with Portland cement to create a more sustainable and environmentally friendly cement product.
• Soil Stabilization: Class F fly ash powder is used in soil stabilization projects. When mixed with certain soils, it improves their engineering properties, including strength, stability, and compaction.
• Grout and Mortar: Class F fly ash powder can be incorporated into grout and mortar mixes to enhance their performance. It improves workability, reduces shrinkage, and enhances the long-term strength of these cementitious materials.
• Precast Concrete: Class F fly ash powder is often used in the production of precast concrete products. It improves the flowability of the concrete mix, allowing for better molding and casting of complex shapes.

Class F Fly Ash Powder Features

• Low Calcium Oxide Content: F Grade fly ash powder has a low calcium oxide (CaO) content compared to Class C fly ash. It typically contains higher levels of silica (SiO2), alumina (Al2O3), and iron oxide (Fe2O3). The low CaO content makes it less reactive with water and slower to gain strength compared to Class C fly ash.
• Fineness: Class F fly ash powder is usually finely ground, with a particle size distribution that falls within specific specifications. The fine particle size allows for better dispersion and reactivity when mixed with other materials.
• Pozzolanic Activity: Class F fly ash powder exhibits pozzolanic activity, meaning it can react with lime in the presence of moisture to form cementitious compounds. This reaction contributes to the strength and durability of cementitious materials.
• Low Carbon Content: Class F fly ash powder typically has a lower carbon content compared to Class C fly ash. This characteristic makes it more suitable for applications where low carbon content is desired, such as in high-performance concrete.