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rob.leipzig23 Mar 2018 08:49Hello,
Yesterday, I read a lot about capillary break layers. There seems to be some debate about whether they should include fines or be free of fines. Gravel with grain sizes of 8/32 mm (0.3/1.25 inches) or 0/32 mm (0/1.25 inches) is recommended.
Is it also possible to use gravel of 8/16 mm (0.3/0.6 inches) as a capillary break layer?
Furthermore, I read that gravel cannot be compacted. Does that mean you pour a layer of about 20 cm (8 inches) of gravel, place a membrane on top, and then pour a concrete slab of, for example, 25 cm (10 inches) above it? Is there no risk of settlement of the gravel layer?
Thank you very much,
Robert
Yesterday, I read a lot about capillary break layers. There seems to be some debate about whether they should include fines or be free of fines. Gravel with grain sizes of 8/32 mm (0.3/1.25 inches) or 0/32 mm (0/1.25 inches) is recommended.
Is it also possible to use gravel of 8/16 mm (0.3/0.6 inches) as a capillary break layer?
Furthermore, I read that gravel cannot be compacted. Does that mean you pour a layer of about 20 cm (8 inches) of gravel, place a membrane on top, and then pour a concrete slab of, for example, 25 cm (10 inches) above it? Is there no risk of settlement of the gravel layer?
Thank you very much,
Robert
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Deliverer23 Mar 2018 11:56Regarding the second question: I am currently compacting over a gravel layer that will hopefully be 20 cm (8 inches) thick in the end. This compacts quite a lot. In my case, only paving will be laid on top. I believe the gravel size is 0/32.