Fly Ash

QUALITY POLICY

The FLYCRETE Laboratories are fully equipped for the testing and evaluation of the physical and chemical parameters of fly ash specified in the Indian standard (IS 3812), European standard (EN 450), British Standard (BS 3892) and the American standard (ASTM 618).

We can arrange to Test through Third Party Laboratories if Client Request.

The following physical and chemical properties are measured in the laboratories:

   Fineness by Retention on 45 micron sieve Wet sieving
   Lime Reactivity
   Moisture Content
   Soundness by Autoclave expansion
   Strength factor Compressive strength at 28 days
   Initial and Final Setting time
   Water requirement

Chemical properties

   Loss on Ignition (Un-burnt carbon content).
   Silica plus Alumina plus Fe2O3 content.
   Silica content.
   Reactive Silica content.
   MgO content.
   Sulphuric Anhydride (SO3) content.
   Na2O content.
   Total Chlorides.
   Calcium Oxide content.
   Free Calcium Oxide content.

Concrete permeability

   Rapid Chloride Permeability Test (RCPT).
   Water Permeability Test.

FLYCRETE - 34 GRADE

Designed by our research laboratories to optimize the performance in cement and concrete applications. The grades reflect the particle size and by this the chemical composition of each grades.

Description:

FLYCRETE - 34 GRADE

High efficiency pozzolanic material, obtained by selection and processing of power station fly ashes resulting from the combustion of pulverized bituminous coal.

FLYcrete-34Grade is subjected to strict quality control. Conforms to ASTM C618 Class F And BS EN 450.

General Information

PresentationFinely divided dry powder
ColourLight grey
Bulk WeightApprox. 1.0 metric ton per cubic meter
Specific densityApprox. 2.3 metric ton per cubic meter
Particle sizeMaximum 34 % ROS on 45 micron sieve
Particle shapeSpherical
Package1 metric ton big-bags and bulk tankers

Recommended Uses:

Concrete

Mass concrete to reduce the heat of hydration To enhance workability of concrete by partial sand replacement.

Recommended Dosages

The dosages of FLYcrete- 34Grade and the other mix constituents should be determined by appropriate mix design testing. They will depend on required mix properties, grade of cement, admixtures used etc., The following figures are indicative.

Grout

General purpose grouts for use in earthworks for the treatment of rock cracks.

Typical concrete performance with 25% -FLYcrete-34Grade

Percentage of Total BinderDosage
Low grade concrete (up to 35 Mpa)23% - 35%80 - 150 kg/m3
Medium grade concrete (35-50 Mpa)25% - 35%100 - 175 kg/m3
Pre-cast concrete20% - 35%70 - 140 kg/m3
Mass concrete50%100 - 150 kg/m3
Pumpable concrete30% - 35%100 - 175 kg/m3
Self compacting/leveling concrete40%150 - 200 kg/m3

Typical concrete performance with 25% FLYcrete - 34Grade

PresentationFinely divided dry powder
Water DemandReduced by 8%
WorkabilityImproved
Setting TimeIncreased 30 - 60 min
Long Term StrengthIncreased 15% -20%
28 day StrengthSimilar
Early Strength (7 days)Reduces by 10-15%
Required Curing8 to 10 Days
Permeability Reduced2 - 5 times
Sulphate AttackSubstantially Reduced
Chlorine PenetrationSubstantially Reduced
Heat of HydrationSubstantially Reduced
Plastic ShrinkageReduced

FLYCRETE - 60 GRADE

Designed by our research laboratories to optimize the performance in cement and concrete applications. The grades reflect the particle size and by this the chemical composition of each grades.

Description:

FLYCRETE - 60 GRADE

high efficiency pozzolanic obtained by selection and processing of power station fly ashes resulting from the combustion of pulverized bituminous coal.

FLYcrete-60Grade is subjected to strict quality control. Conforms to ASTM C618 Class F And BS EN 450.

General Information

PresentationFinely divided dry powder
ColourLight grey
Bulk WeightApprox. 1.0 metric ton per cubic meter
Specific densityApprox. 2.3 metric ton per cubic meter
Particle sizeMaximum 18 % ROS on 45 micron sieve
Particle shapeSpherical

Recommended Uses:

Concrete

Mass concrete to reduce the heat of hydration To enhance workability of concrete by partial sand replacement.

Grout

General purpose grouts for use in earthworks for the treatment of rock cracks.

Recommended Dosages

The dosages of FLYcrete-60Grade and the other mix constituents should be determined by appropriate mix design testing. They will depend on required mix properties, grade of cement, admixtures used etc., The following figures are indicative.

Typical concrete performance with 25% -FLYcrete-34Grade

Percentage of Total BinderDosage
Low grade concrete (up to 35 Mpa)23% - 35%80 - 150 kg/m3
Medium grade concrete (35-50 Mpa)25% - 35%100 - 175 kg/m3
Pre-cast concrete20% - 35%70 - 140 kg/m3
Mass concrete50%100 - 150 kg/m3
Pumpable concrete30% - 35%100 - 175 kg/m3
Self compacting/leveling concrete40%150 - 200 kg/m3

Typical concrete performance with 25% FLYcrete - 60 Grade

PresentationFinely divided dry powder
Water DemandReduced by 8%
WorkabilityImproved
Setting TimeIncreased 30 - 60 min
Long Term StrengthIncreased 15% -20%
28 day StrengthSimilar
Early Strength (7 days)Reduces by 10-15%
Required Curing8 to 10 Days
Permeability Reduced2 - 5 times
Sulphate AttackSubstantially Reduced
Chlorine PenetrationSubstantially Reduced
Heat of HydrationSubstantially Reduced
Plastic ShrinkageReduced