Concrete Mineral Admixture
Our product range includes a wide range of barmer bentonite ( sodium ), calcium hydroxide, micaceous iron oxide, silica fume grey microsilica ( ferro silicon base ), aluminium silicate extra light and bentonite powder.Barmer Bentonite ( Sodium )
Approx. Rs 13.50 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 100 Kilogram |
| State | Powdered |
| Brand | Astrra Chemicals |
| Magnesium Oxide | 06.00% |
| Aluminium Oxide | 08.00% |
| Ferric Oxide | 08.00% |
| Titanium Oxide | 01.50% |
We offer and are the leading manufacturers of Bentonite Powder in Chennai, Tamilnadu, India. It is naturally formed electrostatic volcanic material. It has an electric charge and is widely used in cleaning applications because of its absorption properties. It is composed of montmorillonite and is used in adhesives, cement and ceramic bodies.
Calcium Hydroxide
Approx. Rs 21 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Brand | Astrra Chemicals |
| Purity | 92 - 94% |
| Packaging Size | 25-50 kg |
| Physical Form | Powder |
| Chemical Formula | Ca(OH)2 |
| Molar mass | 74.093 g/mol |
Certificate of analysis:
Lime as Ca (OH)2 | : | 90% |
|
Active CaO | : | 68% |
|
Acid insolubles | : | 1 % | Max |
Iron & Alumina as Fe2O3 & Al2O3 | : | Traces |
|
Magnesia as MgO | : | 0.6% | Max |
Additional Information:
Micaceous Iron Oxide
Approx. Rs 38 / BagGet Latest Price
Product Details:| Minimum Order Quantity | 50 Bag |
| Brand | Astrra Chemicals |
| Grade | MIO |
| Packaging Type | HDPE Bag |
| Packaging Size | 50 Kg |
| Specific Gravity | 04.90 - 05.30 |
| Density | 04.00 - 04.50 g/cm3 |
| Color | Black |
From the metallic color palette of Heavy Body and Fluid Acrylic colors, Micaceous Iron Oxide is a warm, nearly black color that dries with a texture and sparkle similar to fine grit sandpaper. Great as a metallic color, it also makes an excellent surface for drawing with pencil, pastel and conté crayon.
Silica Fume Grey Microsilica ( Ferro Silicon Base )
Approx. Rs 16 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Form | Powder |
| Brand | Astrra Chemicals |
| Usage/Application | Industrial |
| Packaging Type | HDPE Bag |
| Color | Grey |
| Packaging Size | 25-50 kg/bag |
Microsilica ( Grey ) is a mineral admixture composed of very fine solid glassy spheres of silicon d i oxide (SiO2). Each particles are less than 1 micron in diameter, generally 50 to 100 times finer than average cement or fly ash particles. Frequently called condensed silica fume, microsilica is a by- product of the industrial manufacture of ferro silicon and metallic silicon in high-temperature electric arc furnaces. The ferrosilicon or silicon product is draw n off as a liquid from the bottom of the furnace. Vaporizing from the 2000-degree-C furnace bed is oxidized, and as it cools condenses into particles which are trapped in huge cloth bags. Processing the condensed fume to remove impurities and control particle size yields microsilica. It helps in compressive strength, bond strength, and abrasion resistance. Addition of silica fume also reduces the permeability of concrete to chloride ions, which protects the reinforcing steel of concrete from corrosion, especially in chloride-rich environments such as coastal regions and those of humid continental roadways and runways (because of the use of deicing salts) and saltwater bridges. Silica fume reduces bleeding significantly because the free water is consumed in wetting of the large surface area of the silica fume and hence the free water left in the mix for bleeding also decreases. Silica fume also blocks the pores in the fresh concrete so water within the concrete is not allowed to come to the surface.
Certificate of Analysis:
Silica | SiO2 | 90. 26% |
Iron Oxide | Fe2O3 | 01. 11% |
Alumina Oxide | Al2O3 | 05. 84% |
Loss on ignition | 02. 20% | |
Moisture | 02. 20% |
Aluminium Silicate Extra Light
Approx. Rs 82 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Brand | Astrra Chemicals |
| Chemical Formula | Al2SiO5 |
| Molar mass | 162.0456 g mol1 |
| Ferric Oxide | 0.50 (Max) |
| Alumina | 37.59% |
We are a prominent manufacturer, supplier, wholesaler and exporter of Aluminium Silicate Extra Light. All these products are processed using optimum-grade chemical compounds employing latest equipment. Besides, our logistics personnel ensure to timely deliver the offered range at customers'' destination using easy modes of shipment.
Features:
- White in color
- Effective
- Moisture resistant
Bentonite Powder
Approx. Rs 13.5 / KilometerGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilometer |
| Packaging Type | HDPE Bag |
| Packaging Size | 50 kg |
| Physical State | Powder |
| Grade Standard | Technical Grade |
| Brand | Astrra Chemicals |
We offer Bentonite Powder that is naturally formed electrostatic volcanic material. It has an electric charge and is widely used in cleaning applications because of its absorption properties. It is composed of montmorillonite and is used in adhesives, cement and ceramic bodies.
Calcium Chloride Anhydrous Powder
Approx. Rs 29 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Brand | Astrra Chemicals |
| Chemical Formula | CaCl2 |
| Physical Form | Powder |
| Density | 2.15 g/cm3 |
| Molar mass | 110.98 g/mol |
Investigations have shown that a two per cent addition of calcium chloride has equal cure strength at 50F as plain concrete has at 70F. Regardless of the temperature or cement type, concrete mixes containing calcium chloride will always have a faster cure rate than plain concrete. The beneficial effects of calcium chloride will be even more pronounced at lower temperatures. The accelerated cure rate measured as final concrete set time can be reduced by two-thirds when two per cent calcium chloride is added two hours compared to six hours for plain concrete. calcium chloride can accelerate cement hydration reducing its set time.
Product Details:
- Purity
- Accurate composition
- Longer shelf life
- Aggregate Concrete
- Concrete Admixture
- Cement admixture
Calcium Oxide
Approx. Rs 21 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Brand | Astrra Chemicals |
| Chemical Formula | CaO |
| Density | 3.34 g/cm3 |
| Melting Point | 2,572 Deg C |
| Molar mass | 56.0774 g/mol |
Chemical property:
Lime as ca (oh)2 | : | 90% |
|
Active cao | : | 68% |
|
Acid insolubles | : | 1 % | max |
Iron alumina as fe2o3 al2o3 | : | traces |
|
Magnesia as mgo | : | 0. 6% | max |
Ground Granulated Blast Furnace Slag
Approx. Rs 12.5 / kgGet Latest Price
Product Details:| Minimum Order Quantity | 100 kg |
| Packaging Size | 25-50 kg/bag |
| Packaging Type | HDPE Bag |
| State | Powdered |
| Color | Grey |
| Brand | Astrra Chemicals |
GGBS is used to make durable concrete structures in combination with ordinary portland cement and/or other pozzolanic materials. GGBS has been widely used in Europe, and increasingly in the United States and in Asia (particularly in India, Japan and Singapore) for its superiority in concrete durability, extending the lifespan of buildings from fifty years to a hundred years. Two major uses of GGBS are in the production of quality-improved slag cement, namely Portland Blastfurnace cement (PBFC) and high-slag blast-furnace cement (HSBFC), with GGBS content ranging typically from 30 to 70% and in the production of ready-mixed or site-batched durable concrete. Concrete made with GGBS cement sets more slowly than concrete made with ordinary Portland cement, depending on the amount of GGBS in the cementitious material, but also continues to gain strength over a longer period in production conditions. This results in lower heat of hydration and lower temperature rises, and makes avoiding cold joints easier, but may also affect construction schedules where quick setting is required. Use of GGBS significantly reduces the risk of damages caused by alkali–silica reaction (ASR), provides higher resistance to chloride ingress reducing the risk of reinforcement corrosion and provides higher resistance to attacks by sulfate and other chemicals.
Lightweight Aggregate Powder
Approx. Rs 68 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Packaging Type | HDPE Bag |
| State | Powdered |
| Color | White |
| Brand | Astrra Chemicals |
| Packaging Size | 25-50 kg/bag |
Perlite has a very outstanding insulating characteristics and light weight, it is widely used as a loose-fill insulation in masonry construction. In this application, free-flowing perlite loose-fill masonry insulation is poureMasonry Tools Perlited into the cavities of concrete block where it completely fills all cores, crevices, mortar areas and ear holes. In addition to providing thermal insulation, perlite enhances fire ratings, reduces noise transmission and it is rot, vermin and termite resistant. Perlite is also ideal for insulating low temperature and cryogenic vessels. When perlite is used as an aggregate in concrete, a lightweight, fire resistant, insulating concrete is produced that is ideal for roof decks and other applications. Perlite can also be used as an aggregate in Portland cement and gypsum plasters for exterior applications and. for the fire protection of beams and columns. Other construction applications include under-floor insulation, chimney linings, paint texturing, gypsum boards, ceiling tiles and roof insulation boards.
Liquid Sodium Silicate
Approx. Rs 32 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Brand | Astrra Chemicals |
| Packaging Type | Can, Bottle |
| Packaging Size | 5-10 Liter |
| Physical Form | Liquid |
| Chemical Formula | Na2SiO3 |
Specifications:
| Technical speciication | Neutral Grade | Alkaline Grade |
| Appearance | Hazy Colourless | Viscous Translucent |
| Total alkalnity ( as na2o) % by mass, min | 9. 00 +/- 1. 00 | 15. 00 +/- 1. 00 |
| Soluble silicate as sio2 | 29 | 33 |
| Toal soluble slicate % by mass, min | 38. 00 +/- 1 | 48 |
| Ratio of total alkalinity ( as (na2o ) to total soluble silica (as sio2: ( na2o: sio2 ) | 01:30.20 | 01:02.20 |
| Specific gravity | 40 +/- 1 Deg. Be | 50 +/- 1 Deg. be |
Marble Powder (Marblo XL)
Approx. Rs 21 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Color | White |
| Form | Powder |
| Packaging Type | HDPE Bag |
| Brand | Astrra Chemicals |
| Packaging Size | 25-50 kg/bag |
Physical Properties:
| Physical State | Fine Powder |
| Odour | Odourless |
| Appearance | Free Flowing (Clear Particles Pure ) |
| Color | Natural Pure White |
| Pack Density | 1.100 G/ml |
| Ph ( 5% Solution ) | 6. 0 |
| Specific Gravity | 2. 6% Max. |
| Moisture | Below 0. 5% |
| Oil Obsorption Ml/100gm | 18. 20 |
| Partical Size | 325 Mesh |
Chemical Properties:
| Silica | SiO2 | 11.38% |
| Alumina | Al2O3 | 0. 23% |
| Ferric Oxide | Fe2O3 | 0. 09% |
| Titanium Dioxide | TiO2 | NIL |
| Calcium Oxide | CaO | 45.18% |
| Calcium Carbonate | CaCO3 | 88.5% |
| Magnesium Oxide | MgO | 0. 20% |
| MagnesiumCarbonate | MgCO3 | 0. 42% |
| Sulphur | SO3 | 0. 008% |
| Phosphorus | P2O5 | 0. 009% |
| Loss on Ignition | 43 . 60% | |
| Heavy Metal | N.A | |
| Lead | N.A. | |
| Arsenic | N.A. |
Micronized Biomass Silica
Approx. Rs 21 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Color | White |
| Packaging Size | 25 kg/bag |
| State | Powder |
| Packaging Type | HDPE Bag |
| Brand | Astrra Chemicals |
Micronised Biomass Silica (MBS) is an agricultural waste product which comprises of high content of silica. This study was conducted on the off-white amorphous biomass silica ash derived from the rice husk with pozzolanic index 69%. Various percentages of MBS ranging from 0% to 20% by mass have been used as cement replacement material. Compressive strength and water permeability of concrete with MBS incorporation were investigated.
Product Details:
Silica | SiO2 | 88.90% |
Alumina | Al2O | 2.50% |
Ferric Oxide | Fe2O3 | 2.19% |
Calcium Oxide | CaO | 0.22% |
Total Alkalies | (Na2O+K20 | 0.69% |
Loss on drying at 100 Deg.C |
| 4.01% |
Specific gravity |
| 2.25% |
Bulk Density |
| 0.2 – 0.3 gm% |
Free Silica Sand |
| Max.3% |
Micronized Dolomite
Approx. Rs 15.5 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Packaging Size | 25-50 kg/bag |
| Packaging Type | HDPE Bag |
| State | Powdered |
| Ph Value | 10-12 |
| Brand | Astrra Chemicals |
Product Details:
- Particulars
- Results
- Appearance
- Very White Smooth Powder
Sand - M72 Silica Sand
Approx. Rs 14.5 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Packaging Size | 25 kg/bag |
| Color | White |
| Packaging Type | HDPE Bag |
| Brand | Astrra Chemicals |
| Form | Powder |
Analysis Report:
sio2 | 99. 5% |
al2o3 | 0. 08% |
tio2 | 0. 04% |
cao | 0. 01% |
mgo | 0. 01% |
l. O. I. | 0. 28% |
alkalies | 0. 29% |
fe2o3 | 0. 04% |
Sodium Hydroxide
Approx. Rs 78 / kgGet Latest Price
Product Details:| Minimum Order Quantity | 5 kg |
| Brand | Astrra Chemicals |
| Chemical Formula | NaOH |
| Density | 2.13 g/cm3 |
| Molar mass | 39.997 g/mol |
| PH | 13 |
Sodium hydroxide (NaOH) is an inorganic compound. It is a white solid and highly caustic metallic base and alkali salt of sodium which is available in pellets, flakes, granules, and as prepared solutions at a number of different concentrations. Sodium hydroxide forms an approximately 50% (by weight) saturated solution with water. Sodium hydroxide is soluble in water, ethanol, and methanol. This alkali is deliquescent and readily absorbs moisture and carbon dioxide in air. Sodium hydroxide is used in many industries, mostly as a strong chemical base in the manufacture of pulp and paper, textiles, drinking water, soaps, detergents and as a drain cleaner. It is also used in concrete in the construction industry.
Alumina Cement
Approx. Rs 48 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 100 Kilogram |
| Packaging Size | 50 kg |
| Brand | Astrra Chemicals |
| Shelf Life | 2 year |
| Formula | Al2O3 |
| Melting point | 2,072 Deg C |
| Boiling point | 2,977 Deg C |
Additional Information:
Copper Slag
Approx. Rs 23 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Form | Powder |
| Color | Black |
| Brand | Astrra Chemicals |
| Hardness | 5-7 |
| Bulk Density | 1.8-2.2 ton/m3 |
| Moisture Content | 0.1% |
Fosroc Auramix 300 Admixture
Approx. Rs 135 / KilogramGet Latest Price
Product Details:| Packaging Size | 100-200 Liter |
| Usage/Application | Industrial |
| Grade Standard | Chemical Grade |
| Packaging Type | Drum |
| Type Of Admixture | Polycarbonate |
| Color | Dark Brown |
| Brand | Astrra Chemicals |
Lime Powder (Hydrated Lime)
Approx. Rs 21 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Color | White |
| Packaging Type | HDPE Bag |
| Chemical Formula | Ca(OH)2 |
| Brand | Astrra Chemicals |
| Form | Powder |
| Molar Mass | 74.093 g/mol |
| Packaging Size | 25-50 kg/bag |
Ferric Oxide
Approx. Rs 38 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 100 Kilogram |
| Brand | Astrra Chemicals |
| Chemical Formula | Fe2O3 |
| Melting Point | 1,565 Deg C |
| Molar mass | 159.69 g/mol |
We are one of the leading manufacturers, suppliers and exporters of high quality Ferric Oxide.
Sodium Silicate Powder
Approx. Rs 38 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| State | Powdered |
| Packaging Type | HDPE Bag |
| Brand | Astrra Chemicals |
| Formula | Na2SiO3 |
With the help of our distinguished professionals, we have been able to manufacture, supply, wholesale and export Sodium Silicate Powder. The range offered by us is tested to be pure and cent percent effective. Available at very affordable prices, this chemical formulation finds numerous applications in various industries.
Features:
- Longer shelf life
- Effective
- Safe usage
Vermiculite Powder
Approx. Rs 28 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 25 Kilogram |
| State | Powdered |
| Brand | Astrra Chemicals |
| Packaging Size | 25-50 kg/bag |
| Packaging Type | HDPE Bag |
Owing to our vast experience and knowledge of this domain, we have been able to manufacture, wholesale and export best quality Vermiculite Powder. This exfoliated vermiculite is commonly used in the agricultural, construction and horticultural sectors. It is processed by the experienced professionals adhering to the set industry standards.
Features:
- Accurate composition
- Long shelf life
- Provides strength to concrete
Certificate Of Analysis:
Size Grading | 0. 5 to 1.5 mm |
Color | Golden Color |
Bulk density | 100 to 150 Kg / cubic metre |
Water Content | Max 2% + 1% |
PH | 7 to 8 |
Yellow Iron Oxide
Approx. Rs 28.00 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Packaging Size | 50 kg |
| Brand | Astrra Chemicals |
| Packaging Type | HDPE Bag |
| Chemical Formula | Fe2O3 |
Our organization is established as one of the leading manufacturers, suppliers, wholesalers and exporters of quality assured Yellow Iron Oxide. This powder is processed using high quality chemical compounds that our procuring agents obtain from trusted vendors of the market. Our offered powder is packed hygienically in air tight packaging to prevent from any impurity.
Features:
- Longer shelf life
- Good dispersion
- High tinting strength
Bentonite Sodium
Approx. Rs 13.5 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 100 Kilogram |
| Packaging Type | HDPE Bag |
| Color | White |
| Form | Powder |
| Brand | Astrra Chemicals |
| Packaging Size | 25-50 kg/bag |
Black Iron Oxide ( Natural )
Approx. Rs 28 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Brand | Astrra Chemicals |
| Chemical Formula | Fe2O3 |
| Density | 5.17 g/cm3 |
| Color | Black |
| Molar mass | 231.533 g/mol |
Black Micronised Carbon
Approx. Rs 48 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 20 Kilogram |
| Form | Powder |
| Color | Black |
| Brand | Astrra Chemicals |
| Packaging Size | 20 kg/bag |
| Packaging Type | HDPE Bag |
Micro Clay
Approx. Rs 15.5 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Color | White |
| Brand | Astrra Chemicals |
| Packaging Size | 25-50 kg/bag |
| Packaging Type | HDPE Bag |
| State | Powdered |
Red Oxide
Approx. Rs 28 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Brand | Astrra Chemicals |
| Chemical Formula | Fe2O3 |
| Melting Point | 1,566 Degree C |
| Molar Mass | 159.69 g/mol |
Aluminium Trihydrate
Approx. Rs 66 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Brand | Astrra Chemicals |
| Chemical Formula | Al(OH)3 |
| Molar mass | 78 g/mol |
| Color | White |
Black Copper Slag
Approx. Rs 23 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Color | Black |
| Packaging Type | HDPE Bag |
| Packaging Size | 25-50 kg/bag |
| Brand | Astrra Chemicals |
Pumice Stone Powder
Approx. Rs 32 / KilogramGet Latest Price
Product Details:| Minimum Order Quantity | 50 Kilogram |
| Packaging Type | HDPE Bag |
| Brand | Astrra Chemicals |
| Form | Powder |
| Packaging Size | 25 kg/bag |
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Sanklesh Fatechand Chabria (Managing Partner)
Chennai - 600006, Tamil Nadu, India
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