Monday, 17 March 2014

Experiments with retardant

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.

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