基于三大指标的废旧沥青再生技术研究  

Research on Waste Asphalt Regeneration Based on Three Key Indexes

作　　者：李章珍[1] 李印冬 樊旭英[1] 李婷 穆柏林 

机构地区：[1]河北建筑工程学院,张家口075000 [2]张家口市职业技术教育中心,张家口075000

出　　处：《石油沥青》2017年第6期44-47,共4页Petroleum Asphalt

基　　金：河北建筑工程学院校级科研基金(基金编号:Z-201310)

摘　　要：为了确定旧沥青混合料能否使用新沥青作为再生剂进行再生,建立了以新沥青掺入量为y,沥青含量为自变量x的函数关系式,结果表明旧沥青老化严重且掺入量远大于15%,因此不适合用新沥青再生。选用RA25再生剂对旧沥青进行再生,并且得出了以沥青的针入度yl、软化点y2、延伸度y3关于再生剂掺入量x的线性回归函数,以90号沥青的针入度、软化点、延伸度.的标准指标为边界条件,得出了RA25再生剂的最佳掺入量为17%,经试验验证再生剂掺入量为17%的再生沥青的三大指标均能达到90号沥青的标准。In order to determine whether the old asphalt mixture can using new asphalt as regenerant for regeneration, we established a new function equation with old asphalt content as the independent variable x, new asphalt as y. The results show that the old asphalt aged seriously and adding quantity is greater than 15 %, so new asphalt is not suitable as regenerant. Then we choose RA25 regenerant for old asphalt regeneration, and we concluded a linear regression function with the regeneration agent adding amount of x, asphalt penetration of, softening point of, ductility of. Take 90 # asphalt penetration, softening point and the degree of extending standard index as the boundary conditions, the optimum mix dosage of RA25 regeneration agent is 17%, it has been verified by test that the three key indexes of recycled asphalt with 17% regenerant reach the NO. 90 asphalt standards.

关 键 词：三大指标 旧沥青 再生剂 再生再生沥青 

分 类 号：U414[交通运输工程—道路与铁道工程]