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･ Plan your concrete project carefully. There is a set sequence of steps you must take to be successful... ･ Purchase or gather the raw materials for your concrete. You will need Portland type I or II cement, masonry... ･ Build a mixing box...
http://www.wikihow.com/Make-Concrete
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There we learned that lime and silica make up about 85% of the mass of cement. Portland cement, the world's most popular building material, was invented by a British stonemason in 1824, and was named for its resemblance to a type ... What materials do you need to make cement, and what are the directions for making it?
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ask.yahoo.com/19991015.html
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Our history; This year we celebrate 100 years of CEMEX's rich history; Employee insights; Our employees offer their thoughts about our company’s culture and values; Community; Learn about our key initiatives and programs; ... Enter the recipient e-mail address. Example: name@yahoo.com. ... All fields required...
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www.cemex.com/ps/ps_ce_hc.asp
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The Romans also knew how to make a lime-pozzolana cement by adding materials such as volcanic ash or powdered bricks, tiles and pottery to lime. ... Lime-pozzolana cement by itself can make an excellent cementing material for low-rise construction or mass concrete and in some countries (e.g. Indonesia) is still...
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www.howtopedia.org/en/How_to_Make_Alternatives_to_Portl...
www.howtopedia.org/en/How_to_Make_Alternatives_to_Portland_Cement
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but remember that you want to add only enough water to make the mix workable. The less water there is in relation to cement the stronger the final concrete will be. A very general rule of thumb is to use 5 or 6 gallons of water per 94 lb. bag of cement.
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www.magers.org/handy/cement_mix.html
www.magers.org/handy/cement_mix.html
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Make Magazine ... HOW TO - Make a geodesic dome ... Machine pin headers make for easy chip sockets...
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blog.makezine.com/archive/2006/07/cement_topped_workben...
blog.makezine.com/archive/2006/07/cement_topped_workbench.html
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The Portland Cement Association is concerned with contributing to a better environment, in improving the concrete product and its uses, and in raising the quality of construction. ... Temperature extremes make it difficult to properly cure concrete. On hot days, too much water is lost by evaporation from newly placed...
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www.concretenetwork.com/concrete/faq.htm
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How to mix concrete. Advice on the best way to complete your project ... Concrete is a mixture of cement, sand (fine aggregate), small stone or gravel (coarse aggregate) and water. It has many applications, from fence posts to motorway bases and, because of this; there are many different ratios for the constituents to be mixed.
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www.diydoctor.org.uk/projects/mixing_concrete.htm
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Place the correct amount of each material in one of the four containers, as given by Table 1 ... Portland Cement ... Portland Cement 150 g 0.33 lb...
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www.simscience.org/cracks/advanced/makeyourown.html
www.simscience.org/cracks/advanced/makeyourown.html
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