Blue Circle® Rapid Set No‑Mix Concrete is an Australian Made, rapid setting no‑mix concrete designed for setting posts and fixtures quickly and easily, without the need for traditional concrete mixing.

It is supplied ready to use and sets rapidly when water is added directly to the hole, making it ideal for DIY, fencing and light construction applications where speed and simplicity are important.

Features and Benefits

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Australian Made rapid set concrete
An Australian Made product designed for consistent performance under Australian site conditions.

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No‑mix application
Eliminates the need for mixing — simply place the dry product in the hole and add water.

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Fast setting performance
Sets rapidly to secure posts and fixtures quickly, reducing installation time and downtime.

To confirm availability or discuss suitability for your application, contact Boral or your local stockist.

Applications

Blue Circle® Rapid Set No‑Mix Concrete is commonly used for:

  • Fence posts
  • Letterboxes
  • Clothes hoists
  • Garden structures and supports
  • Small sign posts and fixtures

It is ideal for post‑hole applications where ease of use and rapid setting are required.

How no‑mix concrete works

Rapid Set No‑Mix Concrete is designed to be placed dry into the hole, followed by the addition of water.

As water is absorbed, the mix hydrates and sets in place, removing the need for:

  • mixing tubs or tools
  • manual mixing
  • precise batching

Correct water quantity and placement are essential to ensure proper setting and strength.

Setting time and use guidance

Rapid Set No‑Mix Concrete sets quickly under normal conditions, allowing posts and fixtures to be secured in a much shorter time compared with standard concrete mixes.

Key guidance:

  • Add water evenly to activate the mix
  • Do not disturb the post during setting
  • Allow sufficient time before applying loads, in line with product guidance

Always follow instructions on the product data sheet to achieve the best result.

Important use considerations

  • Not suitable for structural concrete applications such as slabs
  • Water quantity is critical — do not over‑water
  • Not recommended for use with aluminium substrates
  • Always follow safety and installation instructions

Range

  • 20kg bags
Bag of Rapid Set Concrete Mix

Part of Boral’s packaged dry mixes range

Rapid Set No‑Mix Concrete forms part of Boral’s range of Australian Made packaged dry mix cement products, designed for fast, simple installation on site.

Explore packaged dry mixes

Boral Packaged Dry Mixes bags in garden

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