First, to be ready to sand, cement, and gravel
2 Their ratio is cement: sand: gravel = 1: 4: 7
3 first cement and sand mix evenly, then take them around to be separated from the intermediate (made a back to shape), add the appropriate water, then shovel gravel into them then is to stir it.
Note: water is the best in the mixing well after cement sand shovel back into shape line plus a little bit, and then after the addition of stones together but do not want to add, and finally added with stirring stirring time.
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