Remix Post Mix Concrete, aka Post Crete or Postcrete, Maxi Bag, 20kg
Remix Post Mix Concrete is suitable for use in fixing most different types of wooden, metal and concrete posts. The normal rule of thumb of 1.5 bags per post must be assessed by the person on site conducting the installation. The mixture is a kiln dried, pre-blended and factory-produced quick setting concrete, which hardens in approximately 10 minutes after water addition, depending on ambient conditions.
Sometimes referred to as post crete, postcrete, quick-set concrete, post-fix.  Whatever the title we find Remix Post Mix Concrete is suitable for use in fixing all types of wooden, metal and concrete posts.
The mix is a kiln dried, pre-blended, factory-produced quick setting concrete, which hardens in approximately 10 minutes after water addition, depending on ambient conditions.
User Instructions
Dig a hole to required size for post, half fill the hole with water and place the post in the hole.  We normally recommend a minimum of 450mm depth for 100mm square fence posts.
The material is already pre-mixed. There is no need for further mixing. It can simply be emptied straight from the bag into the hole.
Add the Remix Post Mix Concrete uniformly around the post, until it is above the level of water. If any dry powder remains visible at this stage, add additional water until absorbed by the material.
Adjust the post into position and support appropriately until material set occurs, after approximately 10 minutes.
After Laying
Once concrete has set, cover with earth, grass or decorative aggregate, as required.