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Sika-4a, Rapid Setting Cement Additive for Leaks, 5 L

Sika-4a, Rapid Setting Cement Additive for Leaks, 5 L

Additives
SIKA

Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.

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General Specifications
Packaging 5 L
Colour Clear liquid
Storage Conditions Store properly in undamaged, original sealed packaging in dry cool conditions at temperatures between +5 °C and +30 °C. Protect from direct sunlight, frost and contamination.
Density ~1.3 g/cm³
pH-Value ~12

Rapid setting cement additive to stop leaks

Sika®-4a is a rapid setting water stopping cement additive. When mixed with ordinary Portland cement and water, it sets rapidly to seal areas of moderate water infiltration through concrete, rock or masonry.

  • Rapid setting for rapid leak plugging and/or fixing.
  • Ready to use, just add clean water and Ordinary Portland Cement.
  • Does not contain chlorides.
  • Solvent free.
Usage
Sika®-4a is used as preliminary waterproofing work on wet surfaces or where there is general infiltration of water, prior to the application of subsequent cementitious render or gunite. Typical applications are tunnels and culverts, mine galleries, water reservoirs, concrete pipes and manholes. It can also be used in quick setting mortar for assembly work, e.g. for fixing anchors, bolts and other fitting subject to early loading in rock or concrete.  
Advantages
The benefits of Sika®-4a include, but are not limited to the following:
  • Rapid setting for rapid leak plugging and/or fixing.
  • Ready to use, just add clean water and Ordinary Portland Cement.
  • Does not contain chlorides.
  • Solvent free.
Packaging

5 L
Colour

Clear liquid
Technical Information
Effect on Setting

Sika®-4a 1: 1 water 15 - 45 seconds when mixed with cement at 0.35 L/ 1 kg

Sika®-4a 1: 4 water 5 - 10 minutes when mixed with cement at 0.18 L/ 1 kg
Application Information
Ambient Air Temperature

+5 °C min. / +35 °C max.
Substrate Temperature

+5 °C min. / +35 °C max