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What bonding agent should I use when pouring a new slab over an existing slab?

April 26, 2017agent bonding existing pouring slab

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What bonding agent should I use when pouring a new slab over an existing slab?

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For interior concrete slabs, Weld-O-Bond is the correct choice. For exterior slabs, a slurry coat made of C-21 and Portland cement should be used. Note: it is crucial that the concrete be placed over the slurry coat while the slurry is still wet.