Concrete shrinkage compensating admixture BT-SRA400

BT-SRA400 is an additive that reduces the plastic and drying shrinkage of ready-mixed concrete.

BT-SRA400 reduces the surface tension of the concrete micropores in the concrete, which occurs when water is dried. This in turn reduces the internal tensile stresses that cause the cement paste to shrink. The shrinkage of the drying is reduced by about 30… 50%. The BT-SRA400 does not contain chlorides or otherwise increase corrosion. BT-SRA400 is added to the fresh concrete mix.

The dosage of BT-SRA400 is generally in the range of 0.5 – 1.5% by volume of cement. The exact amount depends on the concrete class, environmental class and field of application.

  • Significantly reduces drying shrinkage
  • Reduces cracking due to drying shrinkage
  • Reduces shrinkage deformations, reduces joint opening
  • The concentration of stresses in the inner corners decreases
  • Significantly extends the life of structures
  • Low maintenance costs for structures
  • Reduces curling at the edges of the plate
  • The water resistance of concrete increases
  • Floors and foundations
  • Walls
  • Outdoor squares, parking areas
  • Reservoirs, swimming pools
  • Bridges
  • Silos, agricultural facilities
  • Skateparks
  • Prefabricated elements

Material state: liquid
Color: transparent
Density: 1.13 – 1.20 g / cm 3
Boiling point:> 200 ° C
PH: 5 – 7
Flash point: 227-279 ° C
Soluble in water: 100%
Viscosity: 104 – 150 mPas
Not explosive!

Available in 25L canister, 200L barrel and 1000L container
Shelf life in closed packaging 12 months.

General remarks
Take off contaminated clothing.

After inhalation
Provide fresh air. In all cases of doubt, or when symptoms persist, seek medical attention.

After skin contact
Rinse skin with water / shower. Wear suitable gloves. Suitable chemical protection gloves tested to EN 374.

After eye contact
Rinse gently with water for several minutes.

After swallowing
Rinse mouth. Contact a doctor if you feel unwell.

Tapri 13, Tallinn, 11415
Tel: +372 656 67 67

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