Class F fly ash is designated in ASTM C 618 and originates from anthracite and bituminous coals. It consists mainly of alumina and silica and has a higher LOI than Class C fly ash. Class F fly ash also has a lower calcium content than Class C fly ash. Replacement When used in portland cement, Class F fly ash can be used as a portland cement replacement ranging from 20-30% of the mass of cementitious material. Advantages When used as a portland cement replacement, Class F fly ash offers the following advantages when compared to unmodified portland cement: Increased late compressive strengths (after 28 days) Increased resistance to alkali silica reaction (ASR) Increased resistance to sulfate attack Less heat generation during hydration Increased pore refinement Decreased permeability Decreased water demand Increased workability Decreased cost ($80/ton for portland cement vs. $30/ton for fly ash).
Product: Pulverised Fly Ash HSN Code: 26219000 Origin: India Grade: Class F & Class C Certifications: relevant certifications, including ASTM C618 Packaging Details: Bulk/Jumbo bags, customizable. Shipping: Ex-works/FOB/CIF, based on buyer's preference. Volume: 50,000 MT+/ month Lead time: 30 days, negotiable
Pollutant-free fly ash is used in the building materials industry as an additive. Used in cement and concrete. Production of masonry bricks from sand-lime bricks or aerated concrete serve. In road construction and ground-works, fly ash is used together with aggregate as a building material for unbound base courses. Product complied with: ASTM C 618 / BS 3892 / IS 3812 / EN 450 standards. Certification and Test-reports are available.
F Class Fly ash Use in Making cement, construction, Brick industry. pozoline fly ash.
Requirement before 20 days Volume: 15, 000- 20, 000 mt (in jumbo) FOB hai phong port Specifications of fly ash ( astm ( C 618) Moisture: ...................0.1- 0.9% Sio2...........................50- 56 Al2o3.........................25- 30% Fe2o3.........................5-9% So3.............................0.5- 0.8% Loi (loss of ignition): .4.0- 5.5%
Fly ash is an inexpensive replacement for portland cement used in concrete, while it actually improves strength, segregation, and ease of pumping of the concrete. Fly ash is also used as an ingredient in brick, block, paving, and structural fills. Fly ash can be a cost effective partial substitute for Portland cement in markets that are experiencing supply shortages. An industrial by-product that is otherwise waste, fly ash is environmentally friendly because it is recycled and has low embodied energy. Because fly ash cement requires less water than portland cement, it is easier to use in cold weather. It can be formulated to produce various set times, cold weather resistances, strengths and strength gains, depending on the job. Fly ash can be used sparingly as an admixture or in large amounts to replace portland cement. The material is somewhat lighter than portland cement. 50 Kgs, 1000 Kgs & Bulkers of 20000 Kgs.
Fly ash is a by-product produced while burning finely ground coal in a boiler to produce electricity. It is removed from the plant exhaust gases primarily by electrostatic precipitators or baghouses and secondarily by scrubber systems. Physically, fly ash is a very fine, powdery material, composed mostly of silica. Nearly all particles are spherical in shape. Fly ash is a pozzolan, a siliceous material which in the presence of water will react with calcium hydroxide at ordinary temperatures to produce cementitious compounds. SiO2, Al2O3, Fe2O3 and occasionally CaO are the main chemical components present in fly ashes. Fly ash significantly improves concrete performance in different ways and also provides many benefits in cement and non-cement applications. Fly Ash colour can vary from grey and dark grey, yellowish tan and light to brownish. ADVANTAGES OF FLY ASH IN CONCRETE Fly Ash is a Pozzolan Improves concrete workability and lowers water demand Sulfate and Alkali Aggregate Resistancet Rise in compressive strength over time Environment friendly CEMENTATION Fly Ash is optimized for its fineness while reducing the water demand and improving the chemical compositions to maximise its benefits when used in concrete. Fly-ash can also be used as an add-on to concrete mixture with pozzolanic and/or latent hydraulic properties. We at CEMENTATION selectively collect fly ash and subject to rigorous testing, further refines these collected materials to produce quality fly ash products meeting the needs of our customers.
Fly ash grade 1) From Yingkou, Liaoning, China. FOB. 13 usd/tons.
Fly Ash ( Our Product ) & Grade is Class F or Class C Price of product : To be discussed with the direct international customers. Product origin : India Key Specifications/Special Features : ASTM C 618 Minimum Order Size : 500 MT Packaging details : 1.4 MT or 1.5 MT Jumbo Bags or Break Bulk
