| 摘要 |
FIELD: construction. ^ SUBSTANCE: method for road concrete mix making consists in the following: bituminous-vermiculite compound is taken as bonding substance, fine milled rock form hydromica group is roasted, inflated vermiculite of 0.6-1 mm fraction is separated and mixed with mineral powder, broken stone, glass sand and heated native asphalt. Fine milled rock form hydromica group is roasted together with mineral powder. As mineral powder, fine non-milled glass sand (wastage from coal production with less than 0.315 mm fraction and 0-0.07 fraction after roasting) is taken, at that its composition is completed with additives of dusty limestone in amount of 2.5-3.5 wt % (in equivalent to CaO) of roasted glass sand mass, broken stone is taken from limestone, inflated vermiculite 1.4-1.6 wt % of bonding substance mass and roasted glass sand 9.4-9.9 wt %. ^ EFFECT: increase of natural resources for mineral powders due to fine glass sands utilization and increase of compression strength. ^ 2 ex, 2 tbl |
