Concrete is a result of the mixture of cement, sand, gravel and water.
In general, the formula is simple:
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| concrete manual |
- one piece cement
- three piece gravel
- three piece sand
- and water as include
However, according to general using certain it use special recipes that must be followed exactly.
Concrete dilemma
Considering the fact that there are oceans enough cement, sand and gravel, and that there are large air currents, why not make a part of the ocean in concrete?
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