does any body information about architectural precast elements, ie, coloured concrete, exposed agregate, acid surface, hydrofobic products, surface resin, etc.
See the British Concrete Society,<br>
Technical Report No 13, published March 1977<br>
ISBN 0 7210 1060 1.<br>
Chapters 6 and 8 have some info on special finishes.<br>
Also various chemical businesses (eg Bayer) have literature on colourings for concrete.