The given context describes how the quantity of materials required for a specific mix of concrete or mortar varies depending on the mix design. The required materials include cement, sand, coarse aggregates, and water. The table provided in the context gives an estimate of the quantity of these materials required per cubic meter for various nominal mixes of concrete and mortar.
It is important to note that the quantity of materials required will differ depending on the specific mix design being used. Therefore, the table provides an estimate and should not be used as a definitive guide for all concrete or mortar mixes.
Quantities of Materials Per Cubic Meter of Concrete Mix Proportions
Nominal Mix | Water Cement Ratio | Water per 50Kg Bag of Cement | Cement | Sand (CUM) | Crushed Stones (CUM) | |||
Cement | F.A. | C.A. | By Weight (Kg) | By Number of Bags | ||||
1 | 1 | – | 0.25 | 12.5 | 1015 | 20.3 | 0.710 | – |
1 | 1.5 | – | 0.28 | 14 | 815 | 16.3 | 0.855 | – |
1 | 2 | – | 0.3 | 15 | 687 | 13.74 | 0.963 | – |
1 | 2.5 | – | 0.35 | 17.5 | 585 | 11.7 | 1.023 | – |
1 | 3 | – | 0.4 | 20 | 505 | 10.1 | 1.06 | – |
1 | 4 | – | 0.53 | 26.5 | 395 | 7.9 | 1.106 | – |
1 | 6 | – | 0.7 | 35 | 285 | 5.7 | 1.197 | – |
1 | 8 | – | 0.9 | 45 | 220 | 4.4 | 1.232 | – |
1 | 1 | 2 | 0.3 | 15 | 560 | 11.2 | 0.392 | 0.784 |
1 | 2 | 2 | 0.42 | 21 | 430 | 8.6 | 0.602 | 0.602 |
1 | 1.5 | 3 | 0.42 | 21 | 395 | 7.9 | 0.414 | 0.828 |
1 | 1.66 | 3.33 | 0.48 | 24 | 363 | 7.26 | 0.419 | 0.838 |
1 | 2 | 3 | 0.5 | 25 | 385 | 7.7 | 0.539 | 0.808 |
1 | 2 | 3.5 | 0.53 | 26.5 | 330 | 6.6 | 0.462 | 0.808 |
1 | 2 | 4 | 0.55 | 27.5 | 310 | 6.2 | 0.434 | 0.868 |
1 | 2.5 | 3.5 | 0.57 | 28.5 | 305 | 6.1 | 0.534 | 0.748 |
1 | 2.5 | 4 | 0.6 | 30 | 285 | 5.7 | 0.499 | 0.798 |
1 | 3 | 4 | 0.65 | 32.5 | 265 | 5.3 | 0.556 | 0.742 |
1 | 2.5 | 5 | 0.65 | 32.5 | 255 | 5.1 | 0.446 | 0.892 |
1 | 3 | 5 | 0.69 | 34.5 | 240 | 4.8 | 0.504 | 0.84 |
1 | 3 | 6 | 0.75 | 37.5 | 215 | 4.3 | 0.452 | 0.904 |
1 | 4 | 8 | 0.95 | 47.5 | 165 | 3.3 | 0.462 | 0.924 |
Notes:
The table provided assumes that fine aggregates (F.A.) have 40 percent voids, while coarse aggregates (C.A.) have 45 percent voids. It also assumes an air content of 1 percent in the mix. It should be noted that the table does not account for bulking of sand or wastage.
For gravel aggregates, the table recommends decreasing the amount of cement by 5 percent, increasing the amount of sand by 2 percent, and adjusting the proportion of coarse aggregate in relation to fine aggregate in the mix.
Please note that the table does not include allowances for bulking of sand or wastage, which may need to be considered in actual construction scenarios.