ASPHALT-CONCRETE MIXTURE Russian patent published in 1995 - IPC

FIELD: building of motor road pavements. SUBSTANCE: mixture contains, wt. -% : waste of sawn limestone-shellrock, fraction smaller than 5 mm, 60.0-65.0; fraction 5-15 mm, 27.9-29.85; second distillate of residual tar, 0.10-0.15; dried silicon gel - waste of sulfuric-acid processing of natural phosphorites in production of phosphoric acid and concentrated phosphate fertilizer, 1.5-3.5; bitumen, 5.5-6.5. Compression strength: 4.86-5.25 MPa at 20 C, 3.78-4.16 MPa at 56 C, water resistance coefficient, 0.90-0.97. EFFECT: improved characteristics. 7 tbl