沥青烟是一种较强的致癌物质，对人的健康会造成极大的伤害。
The possible health hazards in fumes and aerosols from bitumen have been discussed for several years.
规范的粘度比模型表征沥青的流变学特性的年龄混合软化和更新代理人。
A normalized viscosity ratio model was used to characterize the rheological properties of aged bitumen mixed with softening and rejuvenating agents.
加拿大冬季恶劣的气候条件加上道路经常性清除积雪更让人担心沥青表面能否保持完好。
Severe Canadian winter conditions combined with an aggressive snow removal program caused concerns as to whether the asphalt surfaces could remain intact after another winter major rehabilitation.
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