METHOD OF REINFORCING ASPHALT-CONCRETE MIX AND DEVICE FOR ITS EMBODIMENT Russian patent published in 1999 - IPC

FIELD: construction of pavements of motor roads, particularly, reinforced asphalt-concrete pavements. SUBSTANCE: method includes introduction of chemical fibers into asphalt-concrete mix. Fibers are introduced into asphalt-concrete mix in the form of row of hot fibers after spinning from melt or solution, with fibers not contacting one another until their mixing with asphalt-concrete mix. Device for reinforcing of asphalt-concrete mix has bins of mix components with batchers and mixer. Device has unit for preparation of chemical fibers which includes melting head with pressure pump, filter and spinneret. The latter is made in the form of tube with pipe unions having holes which are spaced at 25-30 cm from one another along tube member. Unit has air duct with distributing tube and nozzles. Air duct is located parallel to spinneret. EFFECT: increased strength and sheath characteristics of pavement and its crack resistance. 2 cl, 3 dwg