FIELD: road building.
SUBSTANCE: according to proposed method binder is mixed with ground, water repellent addition is introduced into mixture after which mixture is wetted with water solution of calcium chloride and subsequently mixed to get homogeneous composition. Water-repellent addition-bitumen and binder-fly ash of combustion of brown coal with lump quicklime are preliminarily heated to temperature 10-15o lower than bitumen flash temperature and are mixed in sealed chamber for 5-10 min at keeping of preset temperature. Prior to heating binder, it is subjected to grinding and cohesive ground is used for mixing with binder. Composition includes the following components, mass%: cohesive ground 67-75; brown coal fly ash 12.5-14.0; lump quicklime 4-5; bitumen 1.5-2.0, calcium chloride 1-1.5; water 6-10.5. Invention is aimed at improved strength and life of base owing to absorption of water repellent films on grains of binder and interaggregate spaces of base and formation of stable in time crystal structure.
EFFECT: increased strength and service life of base.
1 tbl, 5 ex, 1 dwg
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