transparence concret??!

Is any one here familiar with light concert which coming transparence!!!

I here about some one from euro made special light concert material

there is a company with a patent to produce light transmitting concrete named litracon,
website here:

http://www.litracon.hu/

last I heard they were having business issues, but their website seems to be up and functioning, so if you have further interest try there.

good luck