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SpEC

SpECgrout C3

Shrinkage compensated, high fluidity filled grout.

SpECgrout C3 is a premium, one-part, shrinkage compensated grout designed for high fluidity and ease of application. Supplied in convenient 25kg sealed bags, it only requires the addition of clean water to achieve excellent flow properties for filling large voids in construction applications.


Ideal for use under machine base plates and structural units, SpECgrout C3 ensures superior compressive strength and minimal downtime for machinery installation.

SpECgrout C3

Technical Details

SpECgrout C3 is designed for a wide range of grouting applications, particularly where performance and reliability are essential:

  • Grouting gaps between 75mm and 500mm thick.
  • Filling voids under machine base plates.
  • Grouting around and beneath ground tanks.
  • Large bolt pockets and supports.
  • Applications requiring low permeability and high fluidity.

Product FAQ

SpECgrout C3 is suitable for grouting gaps between 75mm and 500mm thick, filling voids under machine base plates, grouting around and beneath ground tanks, large bolt pockets, and applications requiring low permeability and high fluidity.

To mix SpECgrout C3, add the specified amount of clean water (3.0 to 3.3 liters per 25kg bag) to a clean mixing vessel. Slowly add the grout powder while using a slow-speed electric drill with a suitable mixing paddle. Mix for a minimum of five minutes to ensure thorough dispersion of ingredients. The grout should be poured immediately after mixing, and not more than 20 minutes after completion.

The recommended water-to-powder ratio is 3.0 to 3.3 litres per 25kg bag.

The compressive strength of SpECgrout C3 is 45±5 N/mm² at 3 days, 55±5 N/mm² at 7 days, and 70±5 N/mm² at 28 days.

Once grouting is completed, all exposed areas of SpECgrout C3 should be cured immediately using SpECcure AC curing membrane to ensure optimal performance and durability.

The setting time for SpECgrout C3 is 2 hours for initial set and 2.5 hours for final set at 25°C.

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