The evaluation result showed that the service performance of modified asphalts with 1% to 1.5% SBR latex as well as their mixtures can fulfil the national demands and use in the construction of high grade highways.

• 在单家寺沥青中加入丁苯乳胶（SBR）后的改性沥青及其混合料的使用性能的评价结果表明，改性单家寺沥青的使用性能可满足“八五”国家科技攻关提出的建议值，可用于高等级公路的建设。