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Natural rock is expensive in our region, and I am faced with the problem of providing an old-fashioned rock garden. Is there an easy way of casting "rocks" to look as natural as possible? It occurred to me that this might be a good way of getting rid of batch ends, and discard concrete.
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We have a project where steel beams of varying lengths have to be embedded in concrete. Should these beams be given any special treatment?
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What's a good way of roughening the under surface of tilt-up slabs to take a plaster finish?
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Manufacturers' instructions for applying plastic paints to masonry always seem to emphasize the need for a dry surface and dry weather. Just how important is this?
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I am thinking of using wood chips and shavings to make a lightweight mix. The obvious danger here is that it can burn; is there an easy way of overcoming this?
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What is the distinction between air bubbles which are regarded as voids and those which are considered to be entrained air?
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What special curing requirements should be established for concrete surfaces which will be exposed to severe wear?
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