碱渣表面憎水改性研究  

Research on Hydrophobe Modification of Surface of Soda Residue

作　　者：王鸿博[1] 钱春香[1] 

机构地区：[1]东南大学节能与绿色建材技术研究所,江苏南京210096

出　　处：《纯碱工业》2005年第6期3-6,共4页Soda Industry

摘　　要：为了封闭碱渣中的易溶盐和氯离子,以保证其作为填料在沥青混合料使用过程中的安全性,以硬脂酸钙为改性剂,通过机械化学改性法对碱渣进行表面憎水处理,用分散率和活化指数作为指标来评价改性效果,并进行以活化碱渣为填料配制的沥青混合料的易溶盐和氯离子溶出性试验。结果表明:经过表面憎水处理的活化碱渣,活化指数随硬脂酸钙掺量的增加而增大,而分散率则显著减小;作为沥青混合料填料时,密级配沥青混合料比开级配混合料对氯离子具有更好地密封性能。In order to seal up the hydrosoluble saline and residue is used as filler in bituminous mixture, the surface chemical modification with calcium stearte as modifier. We chlorine ion in soda residue to assure the safety when soda of soda residue is modified into hydrophobe by mechanically appraise the modification effect with distribution ratio and activation index as guidelines. Finally, we estimate the content of hydrosoluble saline and chlorine ion in bituminous mixture with activated soda residue as filler. The result shows that the activation index increases along with the rising content of calcium stearte. In the contrast, the distribution ratio diminishes remarkably. The dense- graded bituminous mixture rather than open - graded bituminous mixture can seal up the chlorine ion in bituminous mixture.

关 键 词：碱渣 填料 粉体表面改性 

分 类 号：TQ114.1[化学工程—无机化工] X705[环境科学与工程—环境工程]