This reminds me of a self-healing concrete I read about not to long ago. This new stuff can take a strain of 5% tensile strain without breaking, as compared to

This reminds me of a self-healing concrete I read about not to long ago. This new stuff can take a strain of 5% tensile strain without breaking, as compared to the .01 breaking point of regular concrete. http://www.sciencedaily.com/releases/2009/04/090422175336.htm http://www.sciencedaily.com/releases/2009/04/090422175336.ht...