干拌法橡胶粉改性沥青混合料最佳沥青用量的研究  

Optimal asphalt dosage for mixed asphalt modified with waste rubber powder by dry mixing method

作　　者：李秋廷[1] 魏相富 

机构地区：[1]通化县林业局,吉林通化134100 [2]吉林省黄泥河林业局,吉林延边133704

出　　处：《吉林林业科技》2012年第2期36-41,共6页Journal of Jilin Forestry Science and Technology

摘　　要：选取符合规范要求级配的石料做沥青混合料的原材料,用试算法确定混合料中各矿料质量百分含量为:机制砂石屑橡胶粉矿粉=56.0%34.0%2.5%7.5%。用干拌法拌制混合料,在拌制混合料时直接将废胶粉喷洒到处于搅拌状态的热沥青搅拌器中,制成胶粉改性沥青混合料。然后用马歇尔试验法确定出橡胶粉改性沥青混合料的最佳沥青用量为7.5%。Kinds of minerals according with specification were regarded as raw materials for mixed asphalt, which concluded 56% artiicial- sand, 34% rock powder, 2.5% rubber powder and 7.5% mineral powder, respectively after calculation. The mixed asphalt was made by dry mixing toothed, i.e. directly spray the waste rubber powder into the hot bituminous agitator in mixing. Finally, the optimal asphalt dosage of 7.5% was obtained by Marshall test.

关 键 词：干拌法 橡胶改性沥青混合料 最佳沥青用量 

分 类 号：U416.217[交通运输工程—道路与铁道工程]