路面基层中粉煤灰SO_3含量超标的危害及防治对策  

Harmfulness and Prevention Strategies of High Levels of SO_3 in Fly Ash in Road Bases

作　　者：钱进[1] 王冠[1] 

机构地区：[1]江苏省交通技师学院,江苏镇江212006

出　　处：《森林工程》2012年第3期51-53,共3页Forest Engineering

摘　　要：石灰粉煤灰稳定碎石基层松散从而导致沥青路面结构开裂、起拱,经分析是由于基层中粉煤灰原材料SO3含量偏高,遇水后产生化学反应造成结构体积膨胀,最终导致基层和面层整体破坏。本文进一步分析粉煤灰原材料SO3含量偏高的原因,进而提出石灰粉煤灰稳定碎石结构原材料及施工过程的质量控制措施。The weak compactness of the lime-fly ash stabilized aggregate base can cause cracks and buckling deformations on the asphalt pavement. It is analyzed that when the high SO3 fly ash react with water chemically, the base course would expand and finally resuh in damage of the base and surface layer. In the present study, an effort was further made to examine the causes of the high content of SO3 , and some strategies for material control and the construction quality controls for lime-fly ash stabilized aggregate base was proposed.

关 键 词：石灰粉煤灰稳定碎石基层 沥青路面起拱 粉煤灰 SO3含量 体积膨胀 

分 类 号：S773.3[农业科学—森林工程] U414.11[农业科学—林学]