FIELD: building industry. SUBSTANCE: asphalt concrete mixture has modified bitumen binder 5.66-7.40 wt.-% and mineral filler the rest. Modified bitumen binder has bitumen mixture with 1.5-3 wt.-% addition obtained by condensation of higher fatty acids or their vat residues with technical triethanolamine at 140-180 C at the ratio 4-7:1. Technical triethanolamine has the following composition, monoethanolamine 2-10; diethanolamine 20-60; triethanolamine 30-60. Compression strength is 20.2-41.3 and 11.8-15.4 MPa at 20 C and 50 C, respectively, water resistance coefficient is 1.07-1.15. Mixture is used for car road, airdrome coating. EFFECT: enhanced quality of mixture. 2 tbl
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Authors
Dates
1995-11-10—Published
1991-06-13—Filed