FIELD: road building materials.
SUBSTANCE: group of inventions relate to bitumen-based stabilizing additives in asphaltic concrete mixes that can find use when manufacturing pavements using crushed rock/mastic asphaltic concretes in the form of granules. Additive comprises bitumen and structuring agent, which is pretreated flax straw, at bitumen-to-structuring agent weight ratio (1-3):(1-2). Stabilizing additive may further contain 1-5% of reagent Neozone D. In the preparation of additive involving mixing of bitumen and structuring agent followed by granulation, structuring agent is preliminarily prepared by soaking flax straw in a surfactant-containing alkali solution followed by thermo-mechano-chemical activation, washing, drying, and loosened.
EFFECT: expanded functional possibilities of additive.
3 cl, 3 tbl, 8 ex
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|
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|
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|
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