Flyash

Bristile Overseas Pvt Ltd, INDIA is a leading Indian company that is actively involved in supplying & exporting superior quality Fly ash. We offer best quality fly ash that is processed as per the orders. Our company is growing at a considerable rate since its very commencement in the year 2012. The major share of our company’s growth is owed to our worthy owner, Sunil Verma. We are proud to be recognized among the prominent Fly ash Exporters and Suppliers in India.

Quality :We are a quality conscious Company, the aim of which is to supply highest Quality of Fly ash. We procure our Fly ash from best of the thermal power plants in India. At our end we conduct various checks and testing in order to ensure that the fly ash that is delivered is of best quality.

Warehouse and Packaging: We have a spacious and well-resourced warehouse that is capable enough to store large quantities of Fly ash. We provide our Fly ash in 1 MT or 1.4 MT Jumbo bags with liners especially for exports. A team of trained workers ensure that the packaging is done according to the export worthy packing.

What is fly ash?

Fly ash is a fine, glass-like powder recovered from gases created by coal-fired electric power generation.
Fly ash material is solidified while suspended in the exhaust gases and is collected by electrostatic precipitators or filter bags. Since the particles solidify while suspended in the exhaust gases.

Strength for cement concrete

Fly ash is a pozzolan. When mixed with lime (calcium hydroxide), pozzolans combine to form cementitious compounds. Concrete containing fly ash becomes stronger, more durable, and more resistant to chemical attack. Further, fly ash particles are hard and round, which has a ‘ball bearing’ effect that allows concrete to be produced using less water. Both characteristics contribute to enhanced concrete workability and durability

The Product

FLY ASH is sourced from state of the art government-run coal-fired thermal power plants in the State of Gujarat in India, which have one-source long-term contracts for quality coal fly ash procurement. Moreover, the in-built classification system in the power plant enables extraction of a specific fineness consistently.There are different grade of Fly Ash like:Cement Guard Fly Ash ,R-12 , C-618,C-114

FLY ASH is sourced from state of the art government-run coal-fired thermal power plants in the State of Gujarat in India, which have one-source long-term contracts for quality coal fly ash procurement. Moreover, the in-built classification system in the power plant enables extraction of a specific fineness consistently

Packaging

FLY ASH is packed in 1.4 MT Jumbo bags especially for exports with liners. Since jumbo bags are critical during handling of fly ash, we use high grade jumbo bags.
FLY ASH is sourced from state of the art government-run coal-fired thermal power plants in the State of Gujarat in India, which have one-source long-term contracts for quality coal fly ash procurement. Moreover, the in-built classification system in the power plant enables extraction of a specific fineness consistently

Quality | ASTMC 618 F

Two classes of fly ash are defined by ASTM C618: Class F fly ash and Class C fly ash. The chief difference between these classes is the amount of calcium, silica, alumina, and iron content in the ash. The chemical properties of the fly ash are largely influenced by the chemical content of the coal burned (i.e. anthracite,bituminous,and,lignite).

Not all fly ashes meet ASTM C618 requirements, although depending on the application, this may not be necessary. Ash used as a cement replacement must meet strict construction standards, but no standard environmental standards have been established in the United States. 75% of the ash must have a fineness of 45 µm or less, and have a carbon content, measured by the loss on ignition (LOI), of less than 4%. In the U.S., LOI needs to be under 6%. The particle size distribution of raw fly ash is very often fluctuating constantly, due to changing performance of the coal mills and the boiler performance. This makes it necessary that fly ash used in concrete needs to be processed using separation equipment like mechanical air classifiers. Especially important is the ongoing quality verification. This is mainly expressed by quality control seals like the Indian ISI mark or the DCL mark of the Dubai Municipality.

Class of Fly Ash

The burning of harder, older anthracite and bituminous coal typically produces Class F fly ash. This fly ash is pozzolanic in nature, and contains less than 10% lime (CaO). Possessing pozzolanic properties, the glassy silica and alumina of Class F fly ash requires a cementing agent, such as Portland cement, quicklime, or hydrated lime, with the presence of water in order to react and produce cementitious compounds. Alternatively, the addition of a chemical activator such as sodium silicate (water glass) to a Class F ash can lead to the formation of a geopolymer.

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FLY ASH | Technical Specifications

BRISTILE GROUP FLY ASH has in-house laboratories for continuous quality testing for every batch of material dispatched.

BRISTILE GROUP FLY ASH complies with all major international standards like IS 3812: 2003 Part 1, ASTM C618 Class-F and BS EN 450, BS 3892 .

Properties Unit Typical Performance IS 3812 Part 1 ASTM C618 Class F BS 3892 BS EN 450 Category N  
Loss on Ignition (LOI) % 1.5-3 5 max 6 max 7 max 5 max  
Chloride as Cl % 0.01 0.05 max   0.1 max 0.1 max  
SO3 % 0.5-1.0 3 max 5 max 2 max 3 max  
Free CaO % 0.0-0.5       2.5 max  
Reactive CaO % 3.5-5.0     10 max 10 max  
SiO2 Silica % 50-60 35 min        
Al2O3 Alumina % 30-35          
Fe2O3 Iron Oxide % 3.0 – 4.0          
SiO2 + Al2O3 + Fe2O3 % 85 – 95 70 min 70 min 70 min 70 min  
Na2O % 0.5-0.75 1.5 max     5 max  
MgO % 0.6-0.9 5 max     4 max  
P2O5 mg/kg 5-10       100 max  
Fineness (retention on 45 micron sieve) % 18-20 34 max 34 max 12 max 40 max  
Particle Density kg/m3 2200-2300          
Moisture % 0.2-0.8 2 max 3 max 2 max 2 max