| 摘要 |
FIELD: building materials. ^ SUBSTANCE: invention proposes mastic comprising bitumen, limestone-base filling agent and wood resin as additive with the content of phenols 50-60% wherein components are taken in the following ratio, mass. p. p.: bitumen, 47.5-72.5; wood resin with the content of phenols 50-60%, 2.5-27.5, and limestone, the balance. Invention can be used in producing biostable building materials and articles, for example, mastics, asphalt concretes and solutions. Invention provides enhancing biological stability of bitumen-base compositions. ^ EFFECT: improved properties of materials. ^ 2 cl, 3 tbl |
