Concrete

I see a fair bit of discussion in forums about whether to go for a plain concrete driveway of the additional expanse of an exposed aggregate surface. While I was in Japan last year I saw this concrete driveway which…
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If you have got a concreting job to do there are a few different options for getting the mix: Small Jobs Up to about 0.1m3 buy premixed bags 20kg bags ( 0.01m3) from a DIY store. Not cheap at a…
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Have you ever seen concrete that looks like this on a vertical face? Its called ‘Honey combed’ Sometimes its in large areas like this, sometimes in smaller patches. This concrete is obviously weaker and more porous than dense concrete. The…
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I regularly hear the question  “Where should the reinforcement mesh go in slabs?” Well here is some advice. . . . Understanding The Materials Concrete – Strong in Compression, but weak in Tension. Steel Reinforcement– Strong in Tension, and strong in…
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Some people refer to these as  ‘spiderweb’ cracks but the technical name is ‘mapping cracks’. That’s because they can look like a street map. Generally they are much more obvious after rain as water seeps doown into the cracks. These cracks are typically…
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One simple thing to improve the quality of concrete is to use a spray applied curing membrane. . . it’s a pity that this techniques doesn’t seem to be used much in Australian domestic building. Purpose of Membrane These membranes…
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I have previously talked about the importance of Well Designed Concrete Paving so here is a product that will help you achieve that. It’s  called the Connelly Key Joint A galvanised steel strip forms a keyway in the vertical face of the…
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