How to make pri-mix

Clive-tanti

New Member
Hi everyone :) I'm from Malta very small island and we import all materials. So I was trying to do my own pri-mix external material. Any one have any idea or can help me , what additives I can add with sand and cement for plastering external walls ? I mix dry sand 5 to 1 cement than I put it in my pump Mono-Mix .I would like to find some additives so it can bond more maybe fiber for less cracking and a retarder to dry less ? Thankyou
 
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