摘要
采用二级破碎工艺+多阶段的除尘措施,同时配合隧道洞渣分挑、优选料源等质量控制方法,加工出性能指标满足工程建设Ⅱ类粗集料要求的寒武系板岩隧道洞渣碎石,并成功应用至某高速公路项目C40及以下等级混凝土。结果表明:隧道洞渣碎石可配制出工作性能、力学性能和耐久性能良好的混凝土;隧道洞渣混凝土不同龄期抗压强度、抗渗性能、抗氯离子渗透性能均满足设计及施工要求,实体结构质量可靠。
The two-stage crushing process+multi-stage dust removal measures were adopted,together with the material source quality control methods such as tunnel slag separation and optimization,to process the Cambrian slate tunnel slag gravel with performance indicators meeting the requirements of classⅡcoarse aggregate for engineering construction.The tunnel slag gravel was successfully applied to the production of C40 and below grade concrete in the second contract section of a highway civil engineering project.The result shows that,the tunnel slag gravel can be prepared into a kind of concrete with good working performance,mechanical properties and durability.The compressive strength,impermeability and chloride ion penetration resistance of tunnel slag concrete at all ages meet the design and construction requirements,and the quality of the solid structure is reliable.
作者
刘咏华
曾梓棋
雷国军
LIU Yonghua;ZENG Ziqi;LEI Guojun(Hunan Road&Bridge Construction Group Corporation,Changsha 410007,China;School of Traffic Transportation of Engineering,CSUST,Changsha 410114,China)
出处
《路基工程》
2025年第4期198-202,共5页
Subgrade Engineering
关键词
高速公路
洞渣碎石
除尘采集
水泥混凝土
试验选配
质量控制
生态环保
经济性
expressway
tunnel slag gravel
dust collection
cement concrete
test selection
quality control
ecoenvironmental protection
economy
作者简介
刘咏华(1979-),男,湖南长沙人。高级工程师,主要从事高速公路施工技术与管理工作。E-mail:1987746429@qq.com。
