Correct terminology is "Concrete Placement" I think you will find that through out my previous posts that is the term that I used. Frenchie - I think you may have misunderstood the foreman, I'm thinking it's 3700 psi not 37,000 psi concrete. 3,700 is out of the ordinary but it can happen. (most common is 3,000, 3, 500, 3,800 and 4,000 psi concrete)
Cement is indeed the glue that holds the sand, gravel matrix together. It was first discovered by the ancient Romans (see
http://www.romanconcrete.com/romanconcrete.htm) The first cement was a mixture of materials one of which was a Pozzolan ash that they discovered would hold together after it got wet. The proportions of the mixture were lost after the fall of the Roman Empire. It was rediscovered after work done by an Englishman near the Village of Portland England and it has been known, ever since, as Portland Cement. (the above is an abbreviated Cliff Notes version). Anything that aids in the cementing process using Portland Cement (like fly ash, or silica fume) is called a Pozzalith.
Anything that holds individual pieces together is a cement. An asphalt road is held together with asphaltic cement. The sand and gravel are the same its just held together with asphalt instead of Portland cement. Asphaltic Concrete was discovered by a Scotsman named
MacAdam. That's where the term "Tar Mac" came from.
Re: Construction video 5/13/2014 @ 4:30 PM
Originally Posted by HelmutVII
Correct terminology is "Concrete Placement" I think you will find that through out my previous posts that is the term that I used. Frenchie - I think you may have misunderstood the foreman, I'm thinking it's 3700 psi not 37,000 psi concrete. 3,700 is out of the ordinary but it can happen. (most common is 3,000, 3, 500, 3,800 and 4,000 psi concrete)
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Re: Construction video 5/13/2014 @ 4:30 PM
