The concrete supplier is blaming the contractor for inadequte curing, whilst the contractor is suggesting the concrete mix was not correct. Question: Can anyone recommend any products that will seal the cracks or any solutions to this cracking problem. After sealing i would also advise that the slab be rendered with slope to facilitate faster.
Cracks in concrete roof slab
Cracks in concrete roof slab
Acceptable Cracks In Concrete Slabs Normal
I was asked by owner of a newly constructed building to inspect cracks in the top of a concrete roof. The building was constructed in April this year. The cracks were noticed because after heavy rainfall water would leak through the slab and into the building. The crack widths are about 3mm thick but there are quite a number of them on the roof slab, however none appearing on the soffit. The concrete supplier is blaming the contractor for inadequte curing, whilst the contractor is suggesting the concrete mix was not correct.
Question:
Can anyone recommend any products that will seal the cracks or any solutions to this cracking problem. After sealing i would also advise that the slab be rendered with slope to facilitate faster runoff
Thanks for any input
SNaTCH
Question:
Can anyone recommend any products that will seal the cracks or any solutions to this cracking problem. After sealing i would also advise that the slab be rendered with slope to facilitate faster runoff
Thanks for any input
SNaTCH
Acceptable Cracks In Concrete Slabs Pictures
- Prevent rapid loss of surface moisture while the concrete is still plastic through use of spray-applied finishing aids or plastic sheets to avoid plastic-shrinkage cracks (more important in slabs) Provide contraction joints at reasonable intervals, 30 times the wall thickness is a good “rule-of-thumb”.
- The slab is supported at the perimeter by concrete foundation walls and at the interior by concrete columns, drop slab, and column capitals. Review found cracking at the underside of slab in regions of positive bending (tension side; which I know can be expected) away from columns, but some of the cracks are larger than expected (1/8' wide).
- Before we describe crack, movement, and damage patterns and diagnosis in concrete slabs, we need to introduce three different types of poured concrete floor slabs. We use the three Carson Dunlop Associates Sketches shown here to comment on the occurrence, causes, and significance of cracks and movement in poured concrete slab construction.