Project Description

Sika® Solutions for Semi-dry Concrete. Quality improvement with cost reduction.

Project Requirements

High abrasion resistance and excellent concrete surface finishes were two of the main demands for this customer’s pipes and manholes.

During production obtaining consistent stability of the cast shapes, after the instant de-moulding process, was another critical requirement. The customer also wanted to achieve a consistent and uniform, pore free surface to assist the long term durability of their products. The pipe diameters range from 300 to 2700mm.

Sika Solutions

Sika® ViscoCrete®-20 HE was used at a dosage of 0,7% with the following results:

  • Early lifting and movement of pipes from the production area (higher green strength of the semi-dry concrete)
  • Faster production due to a reduction of the compaction time by more than 5 seconds per pipe.
  • Higher initial and ultimate strengths
  • Very good appearance with a pore free, uniform finish on both the internal and external surfaces of the pipes
  • In addition to these product quality and production benefits, the cement content was reduced by 10kg per m3 of concrete – also reducing costs.

The overall result for the pipe producer was therefore an increased rate of production, with significantly improved product quality and at lower unit costs.

Sika Products

In addition the following Sika Product was used in the project

  • Sika® ViscoCrete®-20 HE

Check out more information about Sika ViscoCrete products in the Irish market