Concrete shrinkage cracking over time
Concrete shrinkage cracking over time
(OP)
I have a project where the architect is applying a waterproofing membrane over the top of some concrete work we are doing. The architect does not want the waterproofing to be damaged when the concrete cracks and would like to know how long he should wait after placement before applying the waterproofing. This is a nonstructural topping slab so I am basically trying to determine how long it takes for the majority of shrinkage cracks to occur. Any ideas out there?
Also, I know there is a graph showing the percentage of shrinkage cracking vs time but cannot for the life of me track it down. Can anybody point me in the right direction to finding that?
Also, I know there is a graph showing the percentage of shrinkage cracking vs time but cannot for the life of me track it down. Can anybody point me in the right direction to finding that?






RE: Concrete shrinkage cracking over time
RE: Concrete shrinkage cracking over time
Another point to consider is that when you put a membrane on the concrete, it will help hold in the water in the concrete, thus reducing the overall drying shrinkage and the width of shrinkage cracks.
RE: Concrete shrinkage cracking over time
RE: Concrete shrinkage cracking over time
oldestguy, maybe you are being facetious about the need to waterproof concrete, but you waterproof it because it is not impervious.
RE: Concrete shrinkage cracking over time
RE: Concrete shrinkage cracking over time
RE: Concrete shrinkage cracking over time