Testing at the correct depth: 40% versus 20%

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40% depth of slab thickness is required for slabs drying from one side. This occurs when: 

  • the slab is poured on the ground
  • poured in a casing (metal pan deck) that doesn't allow concrete to breathe

20% depth of slab thickness is required for slabs drying from two sides. This occurs when: 

  • the slab is poured above ground
  • the slab can breathe from top and bottom

Please visit http://bit.ly/1eDxKZy and http://bit.ly/1kC5g9S for more information or call 1.800.634.9961 to talk to a professional.

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