拌和条件对沥青烟释放量的影响.pdfVIP

学兔兔 杆 建巍 中国科技核心期刊 拌和条件对沥青烟程放星B,]|d glH 才洪美，李朝霞，李静，汤琴珠，吴婷 (泰州出入境检验检疫局，江苏泰州 225300) 摘要：沥青热加工过程中释放出沥青烟，对大气造成污染。实验采用反应釜为主体的沥青烟产生设备，考察拌和条件对沥青烟 释放量的影响，结果表明，沥青烟主要是由粒径大于3tzm的颗粒状物质组成(重组分)，而粒径小于3 m的颗粒状物质和气态物质 (轻组分)含量很小，远远低于重组分的含量，且随着温度、时间和空速的增加，沥青烟的释放量均呈增大的趋势；而不搅拌条件下沥 青烟的释放量较搅拌条件下有所增加。 关键词：沥青烟；拌和条件；释放量 中图分类号：Tu57 1 文献标识码：A 文章编号：1001—702X(2014)01—0093—05 The influence of mixing conditions on the quantities of asphalt fumes CAI Hongmei，LI Zhaoxia，LI ring，TANG Qinzhu， Ting (Taizhou Entry-Exit Inspection and Quarantine Bureau，Taizhou 225300，Jiangsu，China) Abstract：Asphalt can release fumes dunng the process of hot working，and it is harmful of asphalt fumes to air．The labo— ratory asphah fumes generation system composed mainly by a reactor was used to study the effect of mixing conditions on the as— phalt fumes emission．The results showed that the asphalt fumes were mainly composed by the particles with diameter larger than 3 um，but the particles with diameter less than 3 I．tm and the gaseous substances were very small，and the contents were far below the levels of the particles with diameter larger than 3 tzm．The emission of asphalt fumes increased with the increasing of temper- ature，time and air volume，but the asphalt fumes under stirring were less than that under no stirring． Key words：asphalt fumes；mixing conditions；releasing quantities 0 前 言 1实 验 常温下沥青是一种固态或半固态材料，其在公路、建筑、 1．1 实验原料 防水材料等领域应用时，为了使沥青、集料和其它添加剂混合