| 摘要 |
FIELD: roof-covering and water-proof coatings. SUBSTANCE: mastic contains skop (waste of cardboard and papermaking production) as a filler at the following ratio of components in mass parts: bitumen, 49-51; clay of high and medium plasticity, 3.2-5; skop, in terms of dry substance, 1.3-3.2; mineral filler, 19-25; water, 30-42. EFFECT: higher efficiency. |
