Product Data Sheet Show all documents

Sika® Beschleuniger BE 2

Powdered, alkaline setting accelerator for shotcrete

Sika® Beschleuniger BE 2 is an alkaline setting accelerator used for sprayed concrete in dry spraying method.

  • Alkaline fast cement setting
  • With less requirement for final strength
  • strong acceleration with low dosage
Sika® Beschleuniger BE 2
Safety Data Sheet
Product Data Sheet Show all documents

Usage

Sika® Beschleuniger BE 2 is particularly suitable for the use in dry mortar plants. Especially if spray concrete is placed over head or thick layers are installed in one application. Also the sprayed concrete is supposed to act as a support in the early phase. This is especially true for objects in
  • tunneling and galleries
  • mining and shafts
  • building pit and slope supports
 

Advantages

The benefit of Sika® Beschleuniger BE 2 include
  • activation of cement hydration
  • accelerated formation of strength-increasing hydration products
which gives
  • quick setting of sprayed concrete
  • quick and regular early strength development

Packaging

25 kg bag, 1000 kg on euro pallet

Colour

grey powder

Product Details

Sustainability / Certifications / Approvals

CERTIFICATES AND TEST REPORTS

Confirms to EN 934-5 (Setting accelerator)
Mining hygiene test and assessment by the Hygiene Institute of the Ruhr area from February 2012.
Product Information

Composition

sodium aluminate

Shelf life

At least 24 months shelf life from date of production.

Storage conditions

Stored dry and properly in undamaged, unopened, original sealed packaging.

Bulk density

Approx. 0.90 g/cm3

Total chloride ion content

< 0.10 %

 

Application

Application Information

Dispensing

Sika Beschleuniger BE 2 is added to the dry mix in the drymix mortar plant. Alternatively, it can be added to the dry mortar/concrete premix at the construction site prior to feeding the spray equipment (rotor machine).
The accelerating performance depends on the cement, the water-cement- ratio of the sprayed concrete and the ambient temperature.
Important: Always conduct trials before combining products in specific mix designs and contact our Technical Services Department for any additional information and advice concerning specific combinations with other products.
Consumption

Recommended dosage

Typical dosage in the range of 2 to 5 % of the cement weight. The maximum dosage should not exceed 5 % of the binder weight.

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