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Astrra Chemicals
Astrra Chemicals


Construction Material

Manufacturer of a wide range of products which include silica fume, construction material microsilica, shell powder, fumed silica, sodium silicate powder and calcined bentonite.

Silica Fume

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Silica Fume
Approx. INR 21 / Kilogram
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Product Details:
Minimum Order Quantity50 Kilogram
Packaging TypeHDPE Bags
StatePowdered

Silica Fume
Silica Fume ( Microsilica ) Is The Most Commonly Used Mineral Admixture In High Strength Concrete. It Has Become The Chosen Favorites For High Strength Concrete And Is A Good Pozzolan & Can Be Used In A Big Way, Adding To The Concrete Mix Will Dramatically Enhance The Workability, Strength & Impermeability Of Concrete Mixes While Making The Concrete Durable To Chemical Attacks, Abrasion & Reinforcement Corrosion, Increasing The Comprehensive Strength. There Is A Growing Demand In The Production Of Concrete Mixes, High Performance Concrete, And High Strength, Low Permeability Concrete For Use In Bridges, Marineenvironment, And Nuclear Plants Etc Etc.



Features:


Longer shelf life
Accurate composition
Optimum binding strength
Purity
Accurate composition
Longer shelf life
Aggregate Concrete
Concrete Admixture
Cement admixture

 

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Shell Powder

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Shell Powder
Approx. INR 29 / Kilogram
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Shell powder

for concrete / construction application
  • Minimum Order Quantity: 50 Kilogram
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    Fumed Silica

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    Fumed Silica
    Approx. INR 104 / kg
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    FUMED SILICA

    We are leading manufacturers and suppliers of FUMED SILICA ( EROSIL - NV/200 ) for the construction industry.
  • Minimum Order Quantity: 10 kg
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    Sodium Silicate Powder

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    Sodium Silicate Powder
    Approx. INR 38 / Kilogram
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    Product Details:
    Minimum Order Quantity50 Kilogram
    Packaging TypeHDPE BAGS
    StatePowdered

    CERTIFICATE OF ANALYSIS

     

    SODIUM META SILICATE
    ( SODIUM SILICATE POWDER )

     

    TECHNICAL SPECIFIATION

    NANO HYDRATE

    ( 9H2O)

    PENTA-HYDRATE ( 5 H2O)

    TOTAL ALKALINITY ( AS Na2O) % BY MASS, MIN

    21

    29

    RATIO OF TOTAL ALKALINITY ( AS Na2o) TO TOTAL SOLUBLE SILICA (AS SiO2):(Na2O):SiO2)

    1:1 + 0. 05

    1:1 + 0. 05

    LOSS ON EVAPORATION % BY MASS, MAX.

    59

    43. 5

    MATTER INSOLUBLE IN WATE % BY MASS, MAX.

    0. 5

    0.5

    FREE ALKALINITY (AS Na2O ) % BY MASS, MAX.

    0. 8

    -

     

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    Calcined Bentonite

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    Calcined Bentonite
    Approx. INR 18.5 / Kilogram
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    SPECIFICATION

      CALCINED BENTONITE   

     

    Chemical Analysis

    FORMULA

    Maximium

    Minimum

    Silica    

    SiO2   

        40.00%

    45.00%

    Magnesium Oxide 

    MgO   

    06.00%

    7.00%

    Aluminium Oxide

    Al2O3 

    08.00%

    10.00%

    Ferric Oxide

    Fe2O3

    08.00%

    10.00%

    Titanium Oxide

    TiO2  

    ----

    01.50%

    Calcium Oxide

    CaO

    08.00%

      10.00%

    Loss on Ignition  

     

    20.00%

    22.00%

                                    

                                                                             

    Physical Properties 

    RESULTS

    Swelling 

    5ccs in 24 Hours

    Gel Index

    11.00%

    Water of Plasticity

    86.95%

    pH Value

    06.00% to 07.00%

     

     

     

  • Minimum Order Quantity: 50 Kilogram
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    Copper Slag

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    Copper Slag
    Approx. INR 38 / Kilogram
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    COPPER SLAG

    ( For Civil / Concrete / Cement application )
  • Minimum Order Quantity: 50 Kilogram
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    PVA Solution

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    PVA Solution
    Approx. INR 95 / Kilogram
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    PVA SOLUTION ( PVA LIQUID )

    ( For Cement / Concrete application )
  • Minimum Order Quantity: 50 Kilogram
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    Foundry Sand

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    Foundry Sand
    Approx. INR 12.5 / Kilogram
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    FOUNDRY SAND

    Concrete is a mixture comprised of cement (10-15 percent), coarse and fine aggregates (60-75 percent) and water (15-20 percent) by volume.   Foundry sand can be used as a fine aggregate substitute in concrete.  Fine aggregates are generally 3/8 inch or smaller, while coarse aggregates are 3/8 to 2 inches in diameter. 

    Foundry sand meets two of the critical requirements for concrete aggregates:  it is uniformly graded, and is strong, hard, and durable.

  • Minimum Order Quantity: 50 Kilogram
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    Sodium Silicate ( Liquid )

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    Sodium Silicate ( Liquid )
    Approx. INR 32 / Kilogram
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    Product Details:
    Minimum Order Quantity10 Kilogram
    UsageIndustrial

    SODIUM SILICATE ( LIQUID )

    Concrete treated with a sodium silicate solution helps to significantly reduce porosity in most masonry products such as concrete, stucco, and plasters. A chemical reaction occurs with the excess Ca(OH)2 (portlandite) present in the concrete that permanently binds the silicates with the surface, making them far more durable and water repellent. This treatment generally is applied only after the initial cure has taken place (7 days or so depending on conditions). These coatings are known as silicate mineral paint.

     

    CERTIFICATE OF ANALYSIS

    SODIUM SILICATE ( LIQUID )

     

    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

     

     

     

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    Nano Silica

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    Nano Silica
    Approx. INR 675 / Kilogram
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    Product Details:
    Minimum Order Quantity5 Kilogram
    Packaging TypeHDPE Bags
    StatePowdered

    Nano Silica

    Compressive strength, Nano-silica, Pore-size distribution, Rate of cement hydration, Setting time, Silica fume, Slag

    Certificate Of Analysis

    Nano Silica

    TEST ITEM

    STANDARD REQUIREMENTS

    TEST RESULTS

    SPECIFIC SURFACE AREA ( M2/G)

    200 + 20

    202

    PH VALUE

    3.7 – 4.5

    4. 12

    LOSS ON DRYING @ 105 DEG.C (5)

    < 1. 5

    0. 47

    LOSS ON IGNITION @ 1000 DEG.C (%)

    < 2.0

    0.66

    SIEVE RESIDUE (5)

    < 0. 04

    0. 02

    TAMPED DENSITY g/L

    40 – 60

    44

    SiO2 CONTENT ( % )

    > 99. 8

    99. 88

    CARBON CONTENT (%)

    < 0. 15

    0. 06

    CHLORIDE CONTENT (%)

    < 0. 0202

    0. 009

    Al2O3

    < 0. 03

    0. 005

    TiO2

    < 0. 02

    0. 004

    Fe2O3

    < 0. 003

    0. 001

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    Sodium Hydroxide

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    Sodium Hydroxide
    Approx. INR 64 / Kilogram
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    Product Details:
    Minimum Order Quantity10 Kilogram
    Grade StandardIndustrial Grade
    TypePowder
    Packing Size5 Kg

    Sodium Hydroxide

    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.
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    Calcium Oxide

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    Calcium Oxide
    Approx. INR 21 / Kilogram
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    Product Details:
    Minimum Order Quantity50 Kilogram
    Physical StatePowder
    UsageIndustrial
    Packaging Size50
    Packaging TypeHDPE BAGS

    Calcium oxide

    ( for concrete application )

    certificate of analysis 

    chemical property :

    content

    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

     

    physical property :

    mesh (bss)              :

    250

     

     general data    :

    free flowing fine powder devoid of grits and impurities 

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    Sodium Meta Silicate

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    Sodium Meta Silicate
    Approx. INR 38 / Kilogram
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    SODIUM META SILICATE ( SODIUM SILICATE POWDER )

    With the help of our distinguished professionals, we have been able to manufacture, supply, wholesale and export Sodium Meta Silicate. 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

    Certificate of analysis:
    Total alkalinity (as Na2O ) % by mass, min21
    Ratio of total alkalinity (as Na2O) to total soluble silica (as SiO2) : (Na2O ) : SiO2)1:1 ± 0. 05
    Loss on evaporation % by mass, max59
    Matter insoluble in water % by mass, max0.5
    Free alkalinity (as Na2O ) % by mass, max0.8
  • Minimum Order Quantity: 50 Kilogram
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    Sand M72

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    Sand M72
    Approx. INR 12.5 / Kilogram
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    Sand m72

    analysis report

     

    sand m72

     

    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%

     

     
  • Minimum Order Quantity: 50 Kilogram
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    Micaceous Iron Oxide

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    Micaceous Iron Oxide
    Approx. INR 38 / Kilogram
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    Micaceous iron oxide

    specification of micaceous iron oxide

     

    iron oxide materials yield reproducible pigments that are non-toxic, non-bleeding, relatively inert, weather resistant, mainly opaque and light fast.

     

    chemical name

    hematite

    chemical formula

    fe2o3

    color

    grey to reddish brown

     

    seive analysis

    result (% retained)

    150 mesh bss (100 microns)

    traces

    240 mesh bss (63 microns)

    05% - 15%

      

    chemical analysis :

     

    specify gravity

    04. 90 – 05. 30

    hardness

    06. 00 – 06. 50

    density (g/cm3)

    04. 00 – 04. 50

    oil absorption (ml/100gm)

    18. 00

    ferric oxide as fe2o3

    >90. 00%

    loi at 1000 deg. C

    < 03. 00%


     
  • Minimum Order Quantity: 50 Kilogram
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    Copper Slag

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    Copper Slag
    Approx. INR 38 / Kilogram
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    COPPER SLAG

    SEIVE ANALYSIS

    RESULT (% RETAINED)

    150 MESH BSS (100 MICRONS)

    TRACES

    240 MESH BSS (63 MICRONS)

    05% - 15%

      

    CHEMICAL ANALYSIS :

     

    SPECIFY GRAVITY

    04.90 – 05.30

    HARDNESS

    06.00 – 06.50

    DENSITY (G/CM3)

    04.00 – 04.50

    OIL ABSORPTION (ML/100GM)

    18.00

    FERRIC OXIDE AS FE2O3

    >90.00%

    LOI AT 1000 DEG. C

    < 03.00%


      
  • Minimum Order Quantity: 50 Kilogram
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    Foaming Agent

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    Foaming Agent
    Approx. INR 150 / Kilogram
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    Product Details:
    Minimum Order Quantity5 Kilogram
    Packaging Size5 Kgs
    Packaging TypeCans
    BrandAstrra
    UsageConcrete / Construction

    Foaming agent

    for concrete / cement / construction application. . .
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    Pumice Powder

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    Pumice Powder
    Approx. INR 32 / Kilogram
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    Pumice Powder

    CERTIFICATE OF ANALYSIS 

     PUMICE POWDER ( GRADE – ASM)

     

    TEST

    RESULT

    MOISTURE 

    0.98 %

    SILICON DI OXIDE

    63.87 %

    ALUMINIUM TRIOXIDE

    11.47 %

    CALCIUM OXIDE

    2.37 %

    MAGNESIUM OXIDE

    1.00 %

    SODIUM OXIDE

    6.81 %

    POTASSIUM OXIDE

    0.94 %

    PH ( 5% aq. Suspension )

    8.20

    Bulk density

    1.05 g/cc

    Water absorption

    30 ml/100g

     

     

      
  • Minimum Order Quantity: 50 Kilogram
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    Micro Clay

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    Micro Clay
    Approx. INR 14.5 / Kilogram
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    Product Details:
    Minimum Order Quantity50 Kilogram
    Packaging TypeHDPE BAGS
    StatePowdered

    • CERTIFICATE OF ANALYSIS
      MICRO CLAY ( WHITE CLAY ) 

      CONTENTS

      MIN.%

      MAX%

      SILICA

      45. 00

      47.00

      ALUMINA

      36. 00

      37. 00

      FERRIC OXIDE

          -

      01.00

      CALCIUM OXIDE

          -

      00 50

      MAGNESIUM OXIDE

          -

      00.50

      TITANIUM DIOXIDE

          -

      00. 50

      LOSS ON IGNITION

      14. 00

      15. 00

      POTASSIUM

           -

      00. 50

      SODIUM

           -

      00. 50

      BRIGHTNESS

        78. 00

          -

      WHITENESS

        80. 00

          -

      ACID SOLUBILITY

        01. 00

      02. 00

      WATER ABSORPTION

      36 ml/100gm

      38 ml / 100gm

      OIL ABSORPTION

      32 ml / 100 gm

      34 ml / 100 gm

      MOISTURE

      02. 00

      03. 00

      PH VALUE @ 10% SOL.

      07. 00

      08. 00

      BULK DENSITY

      00. 50 GM/CC

      00. 60 gm/cc

      RETENTION ON 500 MESH

      -

      00. 50%

       

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    Calcium Chloride Powder Anhydrous

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    Calcium Chloride Powder Anhydrous
    Approx. INR 29 / Kilogram
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    Product Details:
    Minimum Order Quantity50 Kilogram
    Packaging Size50
    Packaging TypeHDPE BAGS

    Certificate of analysis:

     

    alkalinity as nacl

    0. 27%

    purity

    min. 90%

    clearity test ( 5% solution )

    clear & colorless solution

    appearance

    white free flow powder

    water insoluble matter

    0. 06%

    ph of 5% aqueous solution

    min. 8

     

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    Silica Nano Particle

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    Silica Nano Particle
    Approx. INR 675 / Kilogram
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    Nano silica

    in the construction industry, extensive research is going on to improve the performance of various building materials and development of durable and sustainable concrete. Among all the nano-materials, nano-silica is the most widely used material in the cement and concrete to improve the performance because of its pozzolanic reactivity besides the pore-filling effect.

    concrete strength is influenced by lots of factors like concrete ingredients, age, ratio of water to cement materials, etc. Nano-silica incorporation into concrete resulted in higher compressive strength than that of normal concrete to a considerable level.

    for nano-silica blended concretes up to maximum limit of 2% with average particle size of 15 and 80 nm. Same results were obtained for split tensile and flexural strength.

     

    certificate of analysis

    nano silica

     

    test item

    standard requirements

    test results

    specific surface area ( m2/g)

    200 + 20

    202

    ph value

    3. 7 – 4. 5

    4. 12

    loss on drying @ 105 deg. C (5)

    < 1. 5

    0. 47

    loss on ignition @ 1000 deg. C (%)

    < 2. 0

    0. 66

    sieve residue (5)

    < 0. 04

    0. 02

    tamped density g/l

    40 – 60

    44

    sio2 content ( % )

    > 99. 8

    99. 88

    carbon content (%)

    < 0. 15

    0. 06

    chloride content (%)

    < 0. 0202

    0. 009

    al2o3

    < 0. 03

    0. 005

    tio2

    < 0. 02

    0. 004

    fe2o3

    < 0. 003

    0. 001

    specific gravity

    2. 2 – 2. 4

    (generalised )

     

    particla size

    17 nano

     

     

     

  • Minimum Order Quantity: 5 Kilogram
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    Concrete Admixture

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    Concrete Admixture
    Approx. INR 225 / Kilogram
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    CERTIFICATE OF ANALYSIS

     

                                 SUPER PLASTICIZERS ( PCB ) (VISCOSITY MODIFY AGENT )

     

    PRODUCT NAME

    POLYCARBOLICA SUPER PLASTICIZERS

    APPEARANCE

    COLORLESS TO LIGHT LAZY LIQUID

    pH

    6. 00

    Specific Gravity

    1. 10

    TOTOAL SOLIDS

    45%

     

  • Minimum Order Quantity: 5 Kilogram
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    Calcined Kaolin Powder

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    Calcined Kaolin Powder
    Approx. INR 48 / Kilogram
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    CERTIFICATE OF ANALYSIS

          ( CALCINED KAOLIN )

    TYPICAL ANALYSIS

     

    Appearance

    White Powder

    Brightness(ISO)

    82+/-0.5%

    Loss on ignition

    14%(Max)

    Coarse particle on 53

    Micron IS SIEVE (Max)

    0.05%(Max)

    Ph (of 20% aqueous solution)

    4.5 to 6.5

    Particles less than 2 micron

    68% w/w (Min)

    Bulk density

    0.8%+-0.1 gm/cc

    Moisture

    1%(Max)

    Melting point

    1735 Deg.C

    Specific gravity (H2O=1)

    2.63

     

    CHEMICAL ANALYSIS                  (w/w)%

     

    Silica

    45.17

    Ferric Oxide

               0.50(Max)

    Alumina

    37.59

    Titanium Dioxide

    0.50

    Calcium Oxide

    0.22

    Magnesium Oxide

    0.12

    Sodium Oxide

    0.31

    Potash

    0.07

     

     

     

     

  • Minimum Order Quantity: 100 Kilogram
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    Speciality Plasticizers

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    Speciality Plasticizers
    Approx. INR 225 / kg
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    CERTIFICATE OF ANALYSIS

    SUPER PLASTICIZERS ( PCB )
    (VISCOSITY MODIFY AGENT
    )

     

    PRODUCT NAME

    POLYCARBOLICA SUPER PLASTICIZERS

    APPEARANCE

    COLORLESS TO LIGHT LAZY LIQUID

    pH

    6. 00

    Specific Gravity

    1. 10

    TOTOAL SOLIDS

    45%

     

  • Minimum Order Quantity: 5 kg
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    Silica Sand

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    Silica Sand
    Approx. INR 10.5 / kg
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    SAND M72

     

    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%

     

  • Minimum Order Quantity: 100 kg
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    Foaming Agent

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    Foaming Agent
    Approx. INR 150 / kg
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    CLC Foaming Agent
  • Minimum Order Quantity: 5 kg
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    Exfoliated Vermicuilte

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    Exfoliated Vermicuilte
    Approx. INR 28 / kg
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                        VERMICULITE POWDER

                                                    

    PROPERTIES

    RESULT

    MOISTURE CONTENT

    1 – 1. 5%

    APPARENT WEIGHT

    0. 15 – 0. 18 g/cc

    PH

    7 to 9

    SLINTERING TEMPERATURE

    APP. 1200 DEG.C

    MELTING POINT

    APP. 1315 DEG. C

    SPECIFIC GRAVITY

    2. 8 g/m3

     

    CHEMICAL ANALYSIS:

    RESULT

    SiO2

    35 – 41%

    Al2O3

    6 – 9. 5%

    F32O3

    6 – 9. 5%

    MgO

    21. 5 – 25. 5%

    CaO

    2. 6%

    K2O

    3 – 6%

    TiO2

    0. 6 – 1. 4%

    P2O3

    0. 2 – 2

     

     

     

     

  • Minimum Order Quantity: 100 kg
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    Construction Material Microsilica

    Construction Material Microsilica


    Microsilica

    Approx. INR 21 / kg
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    Expanded Perlite Powder

    Expanded Perlite Powder


    Perlite Powder


    Additional Information:

  • Minimum Order Quantity: 100 kg
  • Approx. INR 64 / kg
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    Astrra Chemicals
    Sanklesh Fatechand Chabria (Managing Partner)
    No. 11, Moores Road, Moores Garden Thousand Lights,
    Chennai - 600006, Tamil Nadu, India
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