Concentrated Grout Admixture BC2

BC2 is used to control the expansion in concrete and mortar and compensate natural shrinkage results from drying cement. The product increases the bounding between concrete and mortar with their surroundings. BC2 meets reference standard of ASTM C 827 in pasty state and before mortar and concrete setting

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میانگین میزان مصرف بر اساس بروشور فنی(درصد مصرف)

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Field of Application

 Producing mortar or concrete with a controlled level of expansion,
Producing mortar for steel base preparation and filling joints, voids, and connecting anchor rods, precast members, steel and concrete pipes,
Injection operations in dams, tunnels and alluvial and stone shearing,
Concrete repair work that requires preventing shrinkage of substitute concrete.

Properties and Effects

 Reducing shrinkage, cracking and bleeding of concrete and mortar,
Accelerating the final finishing operation and preparation of the mortar and concrete surface,
Increasing compressive, tensile, bending and shear strength
Providing a volume expansion of up to 2% in concrete or mortar,
Reducing steel corrosion,
Increasing the concrete setting,
Compatible with different types of Portland Cement,
Suitable for connecting concrete and steel surfaces such as protecting post-stressed cables and Preparation heavy machinery bases


a) Mortar
When sand-cement ratio is 1 or less than 1, the dosage rate will be 0.5% of cement weight,
When sand-cement ratio is more than 1, the dosage rate will be 1% of cement weight,
b) Concrete
For concrete mixes with different cement percentage, the dosage rate will be 0.5% to 1% of cement weight

Instruction for use

Add the required quantity of BC2 to mortar or concrete ingredients, then mix for 3 to 5 minutes. To achieve the predetermined controlled expansion, use the mortar or concrete within 20 minutes

Technical Data

 Color: Gray
Physical state: Powder
Density: Approx. 0.79 g/cm3
PH: 10
Temperature stability: Up to 50°C
Chloride: Nill


 Storage: In capped container protected against air and moisture
at 10 to 30°C,
Shelf life: 1 year in original package
Packaging: 1 Kg containers

Technical observation and application

 The ambient temperature for use should be 5 to 30° C,
The exact dosage rate may be obtained by trial mixes
The more the cement percentage, the less the
consumption of Grout Admixture,
Depending on the ambient temperature, the maximum
expansion level will be attained 1 to 2.5 hours after mixing
concrete in cement,
BC2 is compatible with Portland Cement,
When simultaneous use of several admixtures in
concrete mix is required, consult Research Center of Beton

Reference Standards

ASTM C 827

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