I made a mix of concrete and put in to two moulds to which I then used folded chicken wire in place of a rolling tamper (which cost a fortune) to try and push the larger stones of the aggregate down. I then used a asitate stencil on one, as the retardant would soak through paper and left the other exposed as to reveal all its aggregate. I sprayed on the retardant then waited the 24 hours before removing from the moulds. Unfortunately however the cement I used had been sitting open for over a year which means it had went off and cause the blocks once removed from the moulds to crumble.
NEXT: Try again with new cement.
Monday, 17 March 2014
Experiments with retardant
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