Product Data Sheet Safety Data Sheet Show all documents

Sika® Pump

Concrete pumping admixture

Sika® Pump is a universal concrete admixture to improve the pumpability of difficult concrete mixes and protect concrete pumps and pipes from excessive wear.

  • Sika® Pump greatly increases the internal cohesion, plasticity and flexibility of the fresh concrete. This gives a considerable improvement in the workability and particularly the pumping characteristics of concrete mixes. Disjointed, jerky concrete pumping is greatly reduced or prevented and pump efficiency is significantly improved.
  • The stress on the pipes and the concrete pump is reduced with Sika® Pump and their life is extended.
  • Sika® Pump has no negative effects on the hardened concrete properties.
  • Sika® Pump does not contain chlorides or any other substances that cause reinforcement corrosion and can be used without restriction for reinforced and prestressed concrete structures.
Product Data Sheet Safety Data Sheet Show all documents

Usage

  • Sika® Pump is mainly used for concrete mixes with variable fines, a low cement content or a poor particle size distribution (granulometry) and consequent low water retention capacity i.e. mixes which tend to segregate when pumped and/or create very high pump pressures.
  • Even contaminated aggregates (i.e. with dirt and debris) can be pumped without excessive pump pressure by using Sika® Pump.
 

Advantages

  • Sika® Pump greatly increases the internal cohesion, plasticity and flexibility of the fresh concrete. This gives a considerable improvement in the workability and particularly the pumping characteristics of concrete mixes. Disjointed, jerky concrete pumping is greatly reduced or prevented and pump efficiency is significantly improved.
  • The stress on the pipes and the concrete pump is reduced with Sika® Pump and their life is extended.
  • Sika® Pump has no negative effects on the hardened concrete properties.
  • Sika® Pump does not contain chlorides or any other substances that cause reinforcement corrosion and can be used without restriction for reinforced and prestressed concrete structures.

Packaging

200 l/ drum

Colour

Pale Green Liquid

Product Details

Product Information

Composition

Solution of polymer viscosity regulators

Shelf life

24 months from date of production if stored in original, undamaged and sealed containers.

Storage conditions

Storage at temperatures between 5 °C and 30 °C. Protect from direct sunlight, frost and contamination.
Frozen Sika® Pump can be reused after slowly defrosting at room temperature followed by thorough stirring.

Density

~1.01 kg/L

pH-Value

~7

Viscosity

~50 mPa s at 20°C

Total Chloride Ion Content

≤0.1 %

Equivalent Sodium Oxide

≤1.0 %

Application

Application Information

Dispensing

Sika® Pump is added to the cement / aggregate mix at the batching plant after the mixing water. Do not add to a dry mix! Sika® Pump achieves its maximum effect after a wet mixing time of 90 seconds. Sika® Pump changes the viscosity of the concrete mix somewhat, requiring a slightly higher mixer load than the basic mix at the same w/c ratio.
Consumption

Recommended Dosage

0.2 % - 0.4 % by weight of cement to increase the cohesion of difficult concrete mixes. 0.5 % - 1.5 % by weight of cementto reduce the pump pressure and compensate for missing fine aggregate fractions in the mix. Preliminary testing is required to determine the exact dosage for your specific conditions. Please contact Sika technical service for more information and asstistance.

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