Try this simple time-tested mixture formula as a guide ' 1:2:3 parts by dry volume. That is: one part Portland cement, two parts sand and three parts coarse aggregate. Use a shovel to scoop these elements into a large wheelbarrow or a concrete mixing trough. It's wise to start with a moderate amount of dry mix as it gets exponentially harder to mix as water is added. Think of it as the world's biggest cake mix and remember how tiring mixing cakes from scratch can be. Find the approximate proper wet consistency by again thinking of a well-mixed cake mix for thickness. Be sure that it is evenly and completely mixed.



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