Wooden shelters in Japan

http://cgi4.nhk.or.jp/eco-channel/en/movie/play.cgi?movie=e_gsj_20110804_0222

Talking about concrete, how about...

... RADIOACTIVE CONCRETE !
Read the article here:
http://ajw.asahi.com/article/0311disaster/fukushima/AJ201201160062

The slump test

BS en 12350-2-2009 Testing Fresh Concrete Part 2 Slump-Test