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Flowing waves icon representing Grout Aid fluid grout additive

Powder Solutions Postmix and Grout Additives

Grout Aid

Grout Aid is a black box blend of additives for manufacturing cementitious pourable grouts. Blended with cement and sand, it produces a highly fluid, shrinkage compensated grout with little or no bleed.

Form
Powder
Category
Postmix and Grout Additives
Manufacturer
UKCP

Key Benefits

  • Produces highly fluid grout with little or no bleed
  • Very high early strengths
  • Low shrinkage
  • Bleed resistant and shrinkage compensated to ensure 100% fill of voids and cavities
  • Pre-blend of additives, so there is no need to buy small lot additives
  • Everything is included to blend with on site sand and cement

Typical Applications

  • Shrinkage compensated pourable cementitious grouts
  • Filling of cables
  • Fixing anchor bolts
  • Non-shrink grout for supporting machinery and equipment
  • Filling voids and cavities

What is Grout Aid?

Grout Aid is a black box additive for manufacturing cementitious pourable grouts. It is a proprietary powder blend of additives, formulated to be added to cement and sand to produce a shrinkage compensated, cementitious pourable grout.

Because every additive needed is already in the blend, Grout Aid saves having to purchase small lot additives. Everything is included, ready to blend with sand and cement.

A shrinkage compensated grout is formulated to offset the shrinkage that normally occurs as a cementitious material hardens, so it stays in full contact with the surfaces around it.

Where is Grout Aid used?

Grout made with Grout Aid can be used in a wide range of applications, including:

  • Filling of cables
  • Fixing anchor bolts
  • Non-shrink grout for supporting machinery and equipment
  • Filling voids and cavities, where the bleed resistant, shrinkage compensated grout is designed to ensure 100% fill

How to use Grout Aid

Blend Grout Aid with cement and clean, dried fine sand to make a fluid, shrinkage compensated pourable grout. Grout Aid is typically dosed at 50kg per tonne of powder.

A typical mix design is:

Component Typical proportion
Cement 35 to 40%
Sand 55 to 60%
Grout Aid 5%

This mix design is indicative only. Cement and sand contents may vary depending on the properties you need, so confirm your formulation with trials and speak to our technical support team before going into production.

Health and safety

Refer to the Grout Aid Safety Data Sheet, available on request, for full instructions. Wear suitable PPE, including gloves and goggles, when handling.

Packaging, storage and shelf life

Grout Aid is supplied in 25kg paper sacks on 1000kg pallets. Store it in dry conditions and avoid contact with water. When stored correctly, it has a shelf life of 12 months from date of manufacture.

Want to make your own pourable grout? Talk to our technical support team, or request a sample of Grout Aid to try in your mix.

Grout Aid FAQs

Common questions about Grout Aid. For project specific advice, contact our technical team.

What is Grout Aid?

Grout Aid is a proprietary powder blend of additives. It is formulated to be added to cement and sand to produce a shrinkage compensated, cementitious pourable grout.

What is Grout Aid used for?

Grout made with Grout Aid is used for the filling of cables, fixing anchor bolts and as a non-shrink grout for supporting machinery and equipment. It is bleed resistant and shrinkage compensated to ensure 100% fill of voids and cavities.

What does black box additive mean?

It means Grout Aid contains all the additives needed in one pre-blended powder. Instead of buying several small lot additives, you blend Grout Aid with your own sand and cement.

What is the typical mix design with Grout Aid?

A typical mix design is 35 to 40% cement, 55 to 60% clean, dried fine sand and 5% Grout Aid, which is a dose of 50kg per tonne of powder. This is indicative only, as cement and sand contents vary with the properties required. Confirm your mix with trials and with our technical team.

How is Grout Aid supplied and how long does it keep?

Grout Aid is supplied in 25kg paper sacks on 1000kg pallets. Stored correctly, in dry conditions and away from contact with water, it has a shelf life of 12 months from date of manufacture.
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Further reading from the UKCP team, starting with guidance on Grout Aid.

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