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Photographic concrete

A very special surface finish can be achieved using a photographic image where the black and white picture is represented on a plastic form liner by pixels / dots of retarder. Where light colour is required, the dots of retarder are small, increasing to larger dots of retarder for darker colours. Placing the correct concrete against such a sheet will generate areas of varying retardation giving the visual impression of photographic concrete.

 
Acknowledgement: Concrete Society
 

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Visual Concrete: Finishes