Home to warm backfill, to warm the requirements of the back to fill with the strength of the C15 of the bean concrete, but the warm work that with 13 chicken gnawing flone glycoside sulfonate bag Han Li bag cement, 1 gravel (melon stone 5mm), 2 Sand concrete (gravel and sand ratio and C15 gap between the larger), concrete mixing station also tend to a reasonable proportion, said the local warm backfill is the proportion of which proportion I should require backfill concrete, confused? More
1: 2: 3 are cement, bean and mortar
The standard answer should be: melon stone: fine sand: cement = 3: 2: 1
After the completion of the completion of the completion of the completion of the completion of the end of the building, the use of cement label . concrete composition Weight: cement: sand: melon pieces (beans): water = 1.25: 3: 2 : 0.4
