邵三高速公路沥青砼面层碎石质量控制技术

结合邵三高速公路南平段实践经验,针对目前福建省高速公路沥青路面碎石加工中存在的集料粒径与级配、颗粒组成的变异性大,粗集料中0.075 mm颗粒含量偏高及针片状颗粒含量超标等问题,提出通过从控制振动筛筛孔尺寸保证碎石粒径级配,统一振动筛型号保持颗粒组成的一致性,安装干式(湿式)除尘装置控制0.075 mm颗粒含量;选用合理的破碎筛分流程控制针片状含量等具体技术措施,使碎石加工达到《公路沥青路面施工技术规范》(JTGF40-2004)的要求,为今后高等级公路沥青路面碎石加工提供参考经验.

Quality Control of Stone-Crushing Techniques in Asphalt Paving of Shaosan Expressway

Taking Shaosan as a case study,this paper provides solutions to some technical problems existing in the current stones crushing process in highway asphalt pavements.Size and shape of the vibrating Sieve bores are controlled to ensure the identical sizes and shapes of particles to be used in asphalt pavement,install stem type(or wet type) dust device to control contents of 0.075 mm grains,use right sieve and right needle slice content so that the stone crushing process meet the criteria in Standard Specification for Construction and Acceptance of Highway Asphalt Pavements and the constructing experience paves the way for the similar project in future high-grade expressways