Drymix Hi-Strength Quick to Set Concrete

High strength quality concrete ideally suited for applications requiring strengths of up to 36MPa. No need for mixing – just add water!

Features and Benefits:

  • Consists of a special blend of cement, graded dry quality sand, aggregates and selected additives
  • Set in minutes
  • Achieves a 28-day comprehensive strength of 36MPa
  • Ideal for applications involving placement of heavy posts, decks, retaining walls, foundations or footings, bollards, sun shade posts or any project requiring high strength

Storage and Use:

  • Keep dry and store off the ground
  • Do not mix in a wheel barrow due to fast setting times
  • Instructions and safety information can be found on the back of the bag


  • For posts up to 1.8m in length, use two 20kg bags of Hi-Strength Quick to Set. For larger posts use two or three bags
  • Generally the diameter of a post hole should be twice the diameter of the post.
  • Go here to view the Drymix concrete calculator

Does your bag look different to the one here? Click here to view the details for the original packaging.

Available sizes – 20kg