| 摘要 |
FIELD: construction. ^ SUBSTANCE: asphalt-concrete mix contains bitumen, crushed stone, natural or crushed sand and a mineral powder, such as cakes - wastes from production of nonferrous metals and chalky flour at the ratio from 1:2.3 to 1:1.5, with the total content of ferrum and aluminium oxides (Fe2O3+Al2O3) of not more than 7%, with the following ratio of components, wt %: oil bitumen - 5.2-5.7, crushed stone - 19.0-23.5, grinding siftings - 47.2-52.1, natural sand - 17.9-19.0, mineral powder - 4.7-5.7. ^ EFFECT: improved physical-mechanical properties of asphalt concrete based on new compositions of mixtures. ^ 7 tbl |
