Astrra Chemicals LLP
Chennai, Tamil Nadu
GST No. 33AAAFA7706K1ZN
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Product Details:
| Minimum Order Quantity | 100 Kg |
| Admixture Type | Silica Fume |
| SiO2 Content | 85% |
| Chemical Base | Silica |
| Mesh Size | 500 Mesh |
| Water Reduction | NIl, Nil |
| Grade | Technical Grade |
| Purity | 85% |
| Form | Powder |
| Usage/Application | Foundry |
| Application | Construction |
| Material | Silica Fume ( Microsilica ) |
| Brand | Astrra Chemicals |
| Color | Grey |
| Packaging Size | 25 kg/bag |
| Silica | 85% |
Silica Fume (Microsilica) – Grey | High-Performance Concrete Additive
Astrra Chemicals offers premium-quality **Silica Fume (Microsilica) – Grey**, a highly reactive pozzolanic material designed to enhance the performance of modern concrete. Widely used across India, our silica fume is an ideal solution for **high strength concrete, precast elements, bridges, marine structures, industrial flooring, shotcrete, tunnels, repair mortars, grouts, dams, and water-retaining structures**.
This advanced **concrete additive** significantly improves compressive strength by up to 50%, reduces permeability, and enhances durability by protecting structures against **chlorides, sulphates, and corrosion**. It promotes the formation of additional **C-S-H gel**, resulting in a dense, crack-resistant concrete matrix with superior long-term performance.
Astrra’s silica fume also improves workability, minimizes bleeding and segregation, and delivers consistent results in **ready-mix concrete (RMC), high-performance concrete (HPC), and ultra-high-performance concrete (UHPC)** applications.
With a recommended dosage of **5–10% (up to 12–15% for specialized applications)**, it provides a cost-effective and sustainable solution for modern construction needs.
Manufactured in India and supplied in bulk, Astrra Chemicals' silica fume is trusted by engineers, contractors, and infrastructure developers seeking **durable, eco-friendly, and high-performance construction materials**.
Additional Information:
Product Details:
| Minimum Order Quantity | 100 Kg |
| Purity % | 99% |
| SiO2 Content | 94% |
| Mesh Size | 500 Mesh |
| Grade | Concrete Grade |
| Packaging Size | 50 Kgs |
| Purity | 99% |
| Usage/Application | Construction Industry |
| Form | Densified |
| Application | Waterproofing, Precast, High Strength Concrete |
| Loss On Ignition | < 4% |
| State | Powdered |
| Density | 0.76 gm/cc |
| Color | White |
| Country of Origin | Made in India |
| Boiling Point | 2.623 Deg C |
| Brand | Astrra Chemicals |
Silica Fume (Microsilica) White – Premium High-Performance Concrete Additive
Silica Fume, also known as Microsilica, is a premium pozzolanic material widely used as a high-performance concrete additive to enhance strength, durability, and overall performance. This ultra-fine material acts as a powerful concrete strength enhancer, making it ideal for high strength concrete mixes and advanced construction applications.
Our White Silica Fume is specially engineered for high-density concrete, helping reduce concrete permeability while significantly improving concrete durability and microstructure. It reacts chemically within the cement matrix to form a denser, more compact structure, resulting in superior resistance to chlorides, chemicals, and aggressive environmental conditions.
This advanced concrete admixture is extensively used in UHPC additives, precast concrete additives, and shotcrete applications, as well as in marine concrete materials and large-scale infrastructure construction materials. It is the preferred choice for projects requiring durable concrete solutions and long-lasting performance.
As a leading silica fume supplier in India and trusted microsilica manufacturer, Astrra Chemicals provides consistent, premium-grade construction chemical solutions tailored for modern engineering demands. Our product is ideal for applications requiring chemical-resistant concrete, chloride-resistant concrete, and high-performance structural integrity.
Additional Information:
Product Details:
| Type | Powder |
| Size | 6 mm |
| Grade | Concrete (IS 383) |
| Mesh Size | 500 Mesh |
| Form | Undensified |
| Usage/Application | Construction Industry |
| Application | Refractory Castable, High Strength Concrete |
| Material Source | Manufactured Sand |
| Loss On Ignition | < 6% |
| Packaging Size | 50 kg |
| Color | Grey |
| Bulk Density | 400 kg/m3 |
| Country of Origin | Made in India |
| SiO2 Content | 85% |
| Purity | 99% |
Silica Fume (Microsilica) – Grey | High-Performance Concrete Additive
Astrra Chemicals offers premium-quality **Silica Fume (Microsilica) – Grey**, a highly reactive pozzolanic material designed to enhance the performance of modern concrete. Widely used across India, our silica fume is an ideal solution for **high strength concrete, precast elements, bridges, marine structures, industrial flooring, shotcrete, tunnels, repair mortars, grouts, dams, and water-retaining structures**.
This advanced **concrete additive** significantly improves compressive strength by up to 50%, reduces permeability, and enhances durability by protecting structures against **chlorides, sulphates, and corrosion**. It promotes the formation of additional **C-S-H gel**, resulting in a dense, crack-resistant concrete matrix with superior long-term performance.
Astrra’s silica fume also improves workability, minimizes bleeding and segregation, and delivers consistent results in **ready-mix concrete (RMC), high-performance concrete (HPC), and ultra-high-performance concrete (UHPC)** applications.
With a recommended dosage of **5–10% (up to 12–15% for specialized applications)**, it provides a cost-effective and sustainable solution for modern construction needs.
Manufactured in India and supplied in bulk, Astrra Chemicals' silica fume is trusted by engineers, contractors, and infrastructure developers seeking **durable, eco-friendly, and high-performance construction materials**.
Product Details:
| Minimum Order Quantity | 100 Kg |
| Grade | Industrial |
| SiO2 Content | 99% |
| Mesh Size | 325 Mesh |
| Purity | 99% |
| Usage/Application | Construction Industry |
| Form | Powder |
| Application | Paints, Glass, Foundry, Construction |
| Packaging Size | 50 kg |
| Color | White |
| Country of Origin | Made in India |
Silica Fume ( Grade - 325 ) (Microsilica) White – Premium High-Performance Concrete Additive
Silica Fume, also known as Microsilica, is a premium pozzolanic material widely used as a high-performance concrete additive to enhance strength, durability, and overall performance. This ultra-fine material acts as a powerful concrete strength enhancer, making it ideal for high strength concrete mixes and advanced construction applications.
Our White Silica Fume is specially engineered for high-density concrete, helping reduce concrete permeability while significantly improving concrete durability and microstructure. It reacts chemically within the cement matrix to form a denser, more compact structure, resulting in superior resistance to chlorides, chemicals, and aggressive environmental conditions.
This advanced concrete admixture is extensively used in UHPC additives, precast concrete additives, and shotcrete applications, as well as in marine concrete materials and large-scale infrastructure construction materials. It is the preferred choice for projects requiring durable concrete solutions and long-lasting performance.
As a leading silica fume supplier in India and trusted microsilica manufacturer, Astrra Chemicals provides consistent, premium-grade construction chemical solutions tailored for modern engineering demands. Our product is ideal for applications requiring chemical-resistant concrete, chloride-resistant concrete, and high-performance structural integrity.
Additional Information:
Product Details:
| Minimum Order Quantity | 50 Kg |
| SiO2 Content | 85% |
| Concrete Type | High Strength |
| Mesh Size | 500 Mesh |
| Nominal Size | 40 mm |
| Grade | Industrial Grade |
| Purity | 85% |
| Form | Undensified |
| Usage/Application | Construction Industry |
| Application | High Strength Concrete |
| Loss On Ignition | < 5% |
| State | Powdered |
| Packaging Size | 50 kg |
| Material | Grey Microsilica |
| Color | Grey |
| Bulk Density | 400 kg/m3 |
| Moisture | < 1% |
| Brand | Astrra Chemicals |
| Formula | SiO2 |
Silica Fume (Microsilica) – Grey | High-Performance Concrete Additive
Astrra Chemicals offers premium-quality **Silica Fume (Microsilica) – Grey**, a highly reactive pozzolanic material designed to enhance the performance of modern concrete. Widely used across India, our silica fume is an ideal solution for **high strength concrete, precast elements, bridges, marine structures, industrial flooring, shotcrete, tunnels, repair mortars, grouts, dams, and water-retaining structures**.
This advanced **concrete additive** significantly improves compressive strength by up to 50%, reduces permeability, and enhances durability by protecting structures against **chlorides, sulphates, and corrosion**. It promotes the formation of additional **C-S-H gel**, resulting in a dense, crack-resistant concrete matrix with superior long-term performance.
Astrra’s silica fume also improves workability, minimizes bleeding and segregation, and delivers consistent results in **ready-mix concrete (RMC), high-performance concrete (HPC), and ultra-high-performance concrete (UHPC)** applications.
With a recommended dosage of **5–10% (up to 12–15% for specialized applications)**, it provides a cost-effective and sustainable solution for modern construction needs.
Manufactured in India and supplied in bulk, Astrra Chemicals' silica fume is trusted by engineers, contractors, and infrastructure developers seeking **durable, eco-friendly, and high-performance construction materials**.
Additional Information:
Product Details:
| Minimum Order Quantity | 100 Kg |
| Grade | OPC |
| SiO2 Content | 99% |
| Size | 230 mm |
| Mesh Size | 500 Mesh |
| Purity | 99% |
| Usage/Application | Construction Industry |
| Form | Powder |
| Application | Construction |
| Loss On Ignition | < 6% |
| Packaging Size | 50 kg |
Silica Fume (Microsilica) White – Premium High-Performance Concrete Additive
Silica Fume, also known as Microsilica, is a premium pozzolanic material widely used as a high-performance concrete additive to enhance strength, durability, and overall performance. This ultra-fine material acts as a powerful concrete strength enhancer, making it ideal for high strength concrete mixes and advanced construction applications.
Our White Silica Fume is specially engineered for high-density concrete, helping reduce concrete permeability while significantly improving concrete durability and microstructure. It reacts chemically within the cement matrix to form a denser, more compact structure, resulting in superior resistance to chlorides, chemicals, and aggressive environmental conditions.
This advanced concrete admixture is extensively used in UHPC additives, precast concrete additives, and shotcrete applications, as well as in marine concrete materials and large-scale infrastructure construction materials. It is the preferred choice for projects requiring durable concrete solutions and long-lasting performance.
As a leading silica fume supplier in India and trusted microsilica manufacturer, Astrra Chemicals provides consistent, premium-grade construction chemical solutions tailored for modern engineering demands. Our product is ideal for applications requiring chemical-resistant concrete, chloride-resistant concrete, and high-performance structural integrity.
Additional Information:
Product Details:
| Minimum Order Quantity | 100 Kg |
| Grade | OPC |
| SiO2 Content | 99% |
| Size | Powder |
| Mesh Size | 500 Mesh |
| Purity | 99% |
| Usage/Application | Construction Industry |
| Form | Powder |
| Application | Construction |
| Loss On Ignition | < 5% |
| State | Powdered |
| Packaging Size | 50 kg |
| Density | 0.76 gm/cc |
| Melting Point | 1,710 Deg C |
| Brand | Astrra Chemicals |
| Formula | SiO2 |
Additional Information:
Product Details:
| Minimum Order Quantity | 500 Kg |
| Grade | Construction |
| Type | Silica Fume |
| SiO2 Content | 99% |
| Size | Powder |
| Mesh Size | 500 Mesh |
| Purity | 99% |
| Form | Densified |
| Usage/Application | Construction Industry |
| Application | High Strength Concrete |
| Loss On Ignition | < 4% |
| State | Powdered |
| Packaging Size | 50 kg |
| Material | PURE |
| Packaging Type | HDPE Bag |
| Color | White |
| Bulk Density | 600 kg/m3 |
| Country of Origin | Made in India |
| PH Value | 6.90 |
| Brand | Astrra Chemicals |
Additional Information:
Product Details:
| Minimum Order Quantity | 100 Kg |
| SiO2 Content | 85% |
| Form | Undensified |
| Mesh Size | 500 Mesh |
| Grade | FERRO SILICON BASE |
| Application | Refractory Castable, Waterproofing, High Strength Concrete, Precast, RMC |
| Loss On Ignition | < 6% |
| State | Powdered |
| Packaging Size | 25 KGS |
| Material | SILICA FUME |
| Color | Gray |
| Bulk Density | 400 kg/m3 |
| Country Of Origin | India |
Silica Fume Application:
Concrete, Refractory, High Performance Concrete, Oil and Gas Industry, Ceramics, Concrete Roofing, Wall boards, Cementation Repair Products, Concrete Tile & Panels, FCB, Shotcrete, Polymers & Elastomers and (SCC) Self-Compacting Concrete.
ConcreteCompressive strengthCreepFlexural strengthPorositySilica fumeSplitting tensile strengthShrinkageWorkability
Additional Information:
Product Details:
| Minimum Order Quantity | 100 Kg |
| SiO2 Content | 99% |
| Mesh Size | 500 Mesh |
| Form | Powder |
| Grade | Industrial Grade |
| Purity | 99% |
| Usage/Application | Construction Industry |
| Application | Construction |
| Loss On Ignition | < 5% |
| State | Powdered |
| Packaging Size | 50 kg |
| Material | Grey Microsilica |
| Color | Grey |
| Bulk Density | 400 kg/m3 |
| Country Of Origin | India |
Silica Fume (Microsilica) – Grey | High-Performance Concrete Additive
Astrra Chemicals offers premium-quality **Silica Fume (Microsilica) – Grey**, a highly reactive pozzolanic material designed to enhance the performance of modern concrete. Widely used across India, our silica fume is an ideal solution for **high strength concrete, precast elements, bridges, marine structures, industrial flooring, shotcrete, tunnels, repair mortars, grouts, dams, and water-retaining structures**.
This advanced **concrete additive** significantly improves compressive strength by up to 50%, reduces permeability, and enhances durability by protecting structures against **chlorides, sulphates, and corrosion**. It promotes the formation of additional **C-S-H gel**, resulting in a dense, crack-resistant concrete matrix with superior long-term performance.
Astrra’s silica fume also improves workability, minimizes bleeding and segregation, and delivers consistent results in **ready-mix concrete (RMC), high-performance concrete (HPC), and ultra-high-performance concrete (UHPC)** applications.
With a recommended dosage of **5–10% (up to 12–15% for specialized applications)**, it provides a cost-effective and sustainable solution for modern construction needs.
Manufactured in India and supplied in bulk, Astrra Chemicals' silica fume is trusted by engineers, contractors, and infrastructure developers seeking **durable, eco-friendly, and high-performance construction materials**.
Additional Information:
Product Details:
| Minimum Order Quantity | 100 Kg |
| Grade | Construction |
| Product Type | Crushed Stone |
| SiO2 Content | 99% |
| Size | 25 mm |
| Form | Powder |
| Mesh Size | 25 Microns |
| Packaging Size | 50 kg |
| Purity | 99% |
| Usage/Application | Construction Industry |
| Application | Construction |
| Loss On Ignition | < 5% |
| Color | White |
| Packaging Type | HDPE Bag |
| Ph Value | 4-7 |
| Brand | Astrra |
Silica Fume (Microsilica) White – Premium High-Performance Concrete Additive
Silica Fume, also known as Microsilica, is a premium pozzolanic material widely used as a high-performance concrete additive to enhance strength, durability, and overall performance. This ultra-fine material acts as a powerful concrete strength enhancer, making it ideal for high strength concrete mixes and advanced construction applications.
Our White Silica Fume is specially engineered for high-density concrete, helping reduce concrete permeability while significantly improving concrete durability and microstructure. It reacts chemically within the cement matrix to form a denser, more compact structure, resulting in superior resistance to chlorides, chemicals, and aggressive environmental conditions.
This advanced concrete admixture is extensively used in UHPC additives, precast concrete additives, and shotcrete applications, as well as in marine concrete materials and large-scale infrastructure construction materials. It is the preferred choice for projects requiring durable concrete solutions and long-lasting performance.
As a leading silica fume supplier in India and trusted microsilica manufacturer, Astrra Chemicals provides consistent, premium-grade construction chemical solutions tailored for modern engineering demands. Our product is ideal for applications requiring chemical-resistant concrete, chloride-resistant concrete, and high-performance structural integrity.
Additional Information:
Product Details:
| Minimum Order Quantity | 100 Kg |
| Grade | Construction |
| Additive Type | CONCRETE |
| SiO2 Content | 99% |
| Form | Powder |
| Mesh Size | 500 Mesh |
| Purity | 99% |
| Application | Ready Mix Concrete |
| Usage/Application | Construction Industry |
| Loss On Ignition | < 5% |
| State | Powdered |
| Location/City | Chennai |
| Packaging Size | 12.5 kg |
| Material | SILICA FUME |
| Bulk Density | 600 kg/m3 |
| Grade Standard | CONSTRUCTION |
| Country Of Origin | India |
| PH Value | 5-13 |
| Brand | Astrra Chemicals |
Additional Information:
Product Details:
| Minimum Order Quantity | 50 Kilogram |
| Grade | Construction |
| SiO2 Content | 96% |
| Mesh Size | 500 Mesh |
| Form | Densified |
| Usage/Application | Construction Industry |
| Application | High Strength Concrete |
| State | Powdered |
| Packaging Size | 50 Kg/bag |
| Packaging Type | HDPE Bags |
| Density | 0.76 gm/cc |
| Color | White |
| Bulk Density | 600 kg/m3 |
| Country of Origin | Made in India |
| PH Value | 6.90 |
| Brand | Astrra Chemicals |
| Purity | 99% |
| Loss On Ignition | 85% |
Silica Fume (Microsilica) White – Premium High-Performance Concrete Additive
Silica Fume, also known as Microsilica, is a premium pozzolanic material widely used as a high-performance concrete additive to enhance strength, durability, and overall performance. This ultra-fine material acts as a powerful concrete strength enhancer, making it ideal for high strength concrete mixes and advanced construction applications.
Our White Silica Fume is specially engineered for high-density concrete, helping reduce concrete permeability while significantly improving concrete durability and microstructure. It reacts chemically within the cement matrix to form a denser, more compact structure, resulting in superior resistance to chlorides, chemicals, and aggressive environmental conditions.
This advanced concrete admixture is extensively used in UHPC additives, precast concrete additives, and shotcrete applications, as well as in marine concrete materials and large-scale infrastructure construction materials. It is the preferred choice for projects requiring durable concrete solutions and long-lasting performance.
As a leading silica fume supplier in India and trusted microsilica manufacturer, Astrra Chemicals provides consistent, premium-grade construction chemical solutions tailored for modern engineering demands. Our product is ideal for applications requiring chemical-resistant concrete, chloride-resistant concrete, and high-performance structural integrity.
Additional Information:
Product Details:
| Minimum Order Quantity | 50 Kg |
| Admixture Type | Corrosion Inhibitor |
| SiO2 Content | 99% |
| Chemical Base | SILICA |
| Mesh Size | 500 Mesh |
| Water Reduction | Up To 10 % |
| Form | Densified |
| Grade | Technical Grade |
| Purity | 99% |
| Usage/Application | Construction Industry |
| Application | High Strength Concrete |
| Loss On Ignition | < 4% |
| State | Powdered |
| Packaging Size | 50 Kgs |
| Material | Microsilica |
| Density | 0.76 gm/cc |
| Bulk Density | 600 kg/m3 |
| Country Of Origin | India |
| PH Value | 6.90 |
| Brand | Astrra Chemicals |
Additional Information:
Product Details:
| Minimum Order Quantity | 50 Kg |
| Grade | OPC |
| Additive Type | Concrete Aggregate |
| SiO2 Content | 99.5% |
| Form | Powder |
| Size | 20 mm |
| Mesh Size | 500 Mesh |
| Purity | 99% |
| Application | Ready Mix Concrete |
| Usage/Application | Construction Industry |
| Material Type | Aggregate |
| Brand | Astrra |
| Physical Form | Bag |
| Loss On Ignition | < 6% |
| Packaging Size | 50 kg |
Silica Fume (Microsilica) White – Premium High-Performance Concrete Additive
Silica Fume, also known as Microsilica, is a premium pozzolanic material widely used as a high-performance concrete additive to enhance strength, durability, and overall performance. This ultra-fine material acts as a powerful concrete strength enhancer, making it ideal for high strength concrete mixes and advanced construction applications.
Our White Silica Fume is specially engineered for high-density concrete, helping reduce concrete permeability while significantly improving concrete durability and microstructure. It reacts chemically within the cement matrix to form a denser, more compact structure, resulting in superior resistance to chlorides, chemicals, and aggressive environmental conditions.
This advanced concrete admixture is extensively used in UHPC additives, precast concrete additives, and shotcrete applications, as well as in marine concrete materials and large-scale infrastructure construction materials. It is the preferred choice for projects requiring durable concrete solutions and long-lasting performance.
As a leading silica fume supplier in India and trusted microsilica manufacturer, Astrra Chemicals provides consistent, premium-grade construction chemical solutions tailored for modern engineering demands. Our product is ideal for applications requiring chemical-resistant concrete, chloride-resistant concrete, and high-performance structural integrity.
Additional Information: