沥青中环境有害组分浸出影响因素研究.pdfVIP

学兔兔 全国中文核心期刊 新 建巍 锄 中国科技核心期刊 沥青中环境有窖组分浸出影晌因素研究 才洪美 ，张玉贞 [1．泰州x,／k境检验检疫局，江苏 泰州 225300； 2．中国石油大学(华东)重质油国家重点实验室，山东 东营 257061] 摘要：沥青在路面、屋顶以及管道内部的应用决定沥青和水具有接触的机会，这使得沥青中的组分浸出并对水环境造成危害。 对影响沥青组分浸出的4个因素的研究表明，浸提液COD值随浸出时间的延长而增加，且沥青经SBS改性和氧化后，浸提液COD 值较基质沥青有所增加。随着温度升高，沥青组分的浸出量增大，但温度对针入度小的沥青组分的浸出量影响较小。沥青的浸提性 能受NaC1的影响也不同，而沥青经改性和氧化后其浸提液COD值变小。酸性环境对沥青组分的浸出性能影响较大，而碱性环境几 乎不对其造成影响。根据沥青来源不同，浸提性能受pH值的影响也不同，而沥青经SBS改性后浸提液COD值相对基质沥青有所 增加，氧化沥青则有所降低。 关键词：沥青；有害组分；浸出；影响因素；COD值 中图分类号：TU57 1 文献标识码：A 文章编号：1001—702X(2012)07—0059—04 Study on the factor of influencing the leachability from asphalt CAI Hongmei ，ZHANG Yuzhen。 (1．Taizhou Entry—Exit Inspection and Quarantine Bureau，Taizhou 225300，Jiangsu，China； 2．State Key Laboratory of Heavy Oil Processing in China University of Petroleum，Dongying 257061，Shandong，China) Abstract：The main application of asphalt is in the coating of surfaces，e．g．of roads，roofs，linings of water basins and pipes． All these applications have a potentiM for contact with water．Such contact will lead to the leaching of components from the asphalt into the water．The paper studied the four factors that influenced the leaching of components from asphalt，and the results showed the COD of leachate increased with the increase of leaching time，and the COD of leachate from SBS modified asphalt and oxidized asphalt were larger than that of the base asphalt．The increase of temperature was of benefit to the components leaching from asphalt，but temperature had relatively small influence on t