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Showing results for tags 'slabs'.
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I have acquired a number of (plastic) concrete slab moulds (riven face) with the intention of casting my own slabs. I plan to trial different aggregate types (coarse gravel / quarry dust), and adding colourant to see what comes out best, using a basic 1:2:3 mix. I'm aware I will need to use a release agent of some sort in the moulds. I know vegetable oil has been suggested here before (rather than the significantly more expensive release agents you can buy). Anything else anyone would advise using?
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Does anyone have any indication of what sort of weight will crack a Pressed Council Slab (ie the 2" things that cost next-to-nothing on Ebay) laid on a gravel base? I am wondering how safe it is to lay a row of these on top of a gravel drive as a path, which would be down one side of the drive for ease of use by postmen etc and only need to be driven on when particularly wide vehicles come into the driveway. I'm think that anything car or 4x4 or transitsize will be fine, but I am unsure about 3.5-7.5 tonner, larger lorries or 4/6-wheeler tippers. Thanks Ferdinand
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