Concrete is practically a builder’s best friend, with its universally appreciated characteristics of strength, durability and versatility. Its affordability and thermal mass make it an eco-friendly material too, so it’s no wonder concrete is among the most-used building materials in the world.
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from Houzz http://www.houzz.com/ideabooks/55319614/list/why-concrete-wants-to-crack/

from WordPress https://shirleyegiguere.wordpress.com/2015/10/26/why-concrete-wants-to-crack-9-photos/
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