摘要
研究了滚筒渣的成分和安定性,设计制备钢渣沥青混合料并在厂区道路中进行了应用。结果发现,滚筒渣中金属含量低,粒度均匀,游离氧化钙含量低。滚筒渣用作路用集料时,其压蒸粉化率不宜超过5.9%,掺量不宜超过50%。陈化后滚筒渣的游离氧化钙含量、压蒸粉化率和压蒸膨胀率趋于稳定,满足道路集料规范要求。以滚筒渣代替普通集料拌制的沥青混合料的马歇尔稳定度、水稳定性能及动稳定度等性能均满足要求。在厂区道路翻修工程应用结果表明,钢渣沥青路面各项性能良好,满足沥青路面规范要求。
The composition and safety of drum slag are studied.The steel slag asphalt mixture is designed and prepared,and is applied in the factory roads.The result shows that the metal content in drum slag is low,its grain size is uniform and its free calcium oxide content is low.When the drum slag is used as pavement aggregate,its pressure steaming powder rate should not exceed 5.9%,and its mixing amount should not exceed 50%.The free calcium oxide content,pressure steaming powder rate and pressure steaming expansion rate of the drum slag after aging tend to stabilize and meet the standard requirements of road aggregates.The Marshall stability,water stability and dynamic stability of the asphalt mixture prepared by drum slag replacing common aggregate all meet the requirements.The engineering application result in the reconstruction of factory roads shows that all the performances of steel slag asphalt pavement are good and meet the standard requirements of asphalt pavement.
出处
《城市道桥与防洪》
2020年第6期39-41,M0007,共4页
Urban Roads Bridges & Flood Control
关键词
滚筒渣
性能分析
沥青混合料
施工应用
drum slag
performance analysis
asphalt mixture
construction application
