Due to a "change of plans" by the Client, I've been left with a huge pile of loose DoT Type I limestone which I no longer need. I need to lay an area of concrete for a small residential car park at the front of the building... and I'm loathe to grab up the limestone and move it elsewhere due to the transport costs.
If I mix, say, 7 parts of Type I to 7 parts of sand and gravel mixed/20mm ballast to 4 parts of OPC, would this make a reasonable concrete on which I could then add a more conventional concrete mix with finer aggregates for the finished surface ?
Any comments would be very welcome.
Cheers,
Barry.
Limestone concrete mix ? - The viability of limestone in concrete..
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Tony McC
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What depth of bastard mix do you propose and what depth of 'proper' mix would be used to top it?
If this was going to be summat like 50-75mm of the bastard mix with 100mm of 30N concrete over the top, that shouldn't be too much of a problem. It's the overall strength of the completed structure that's imporatnt, and with this being a car-park rather than a private 1-car driveway or shed base, you can't really afford to cut too many corners.
Surely you'd need some of the DTp1 as a capping/improvement/sub-base layer beneath the proposed concrete slab?
If this was going to be summat like 50-75mm of the bastard mix with 100mm of 30N concrete over the top, that shouldn't be too much of a problem. It's the overall strength of the completed structure that's imporatnt, and with this being a car-park rather than a private 1-car driveway or shed base, you can't really afford to cut too many corners.
Surely you'd need some of the DTp1 as a capping/improvement/sub-base layer beneath the proposed concrete slab?
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