阳离子乳化沥青在酸性溶液中的浸出特性.pdf

第18卷第1期
建筑材料学报
Vol. 18, No. 1
2015年2月
JOURNAL OF BUILDING MATERIALS
Feb,,2015
文章编号:1007-9629(2015)01-0065-04
阳离子乳化沥青在酸性溶液中的浸出特性
王振军,魏永锋,夏俊超,臧云飞,周俊祥
(长安大学材料科学与工程学院,陕西西安710061)
摘要:为研究酸度对阳离子乳化沥青在溶液中漫出特性的影响,设计了阳离子乳化沥青在不同酸
度溶液中的浸泡试验,结合分光光度法、滴定法和重量法等化学分析方法,研究了漫泡液国体悬浮
颗粒、化学耗氧量、总硬度和阳离子乳化剂含量等指标,分析了漫泡液酸度对沥青组分、阳离子乳
化剂和Ca2+,Mg2+浸出特性的影响规律.结果表明:在酸性溶液漫泡条件下,阳离子乳化沥青中的
沥青组分、阳离子乳化剂以及Ca2t,Mg2+均被浸出,其中沥青组分和旧离子乳化判漫出量較大,且
浸泡液酸度越高,沥青组分浸出量越大,但酸度变化对阳离子乳化剂漫出量影响较小;另外,Ca2+
Mg2漫出量較小,漫泡液酸度対其漫出量无明显形响
关键词;阳离子乳化沥青;酸性溶液;化学分析法;浸出特性
中图分类号:U414
文献标志码:A
doi:10.3969/j.iss.1007-9629.2015.01.012
Leaching Characteristics of Cationic Emulsified Asphalt in Acid Solution
WANG Zhenjun, WEI Yong feng, XIA Junchao, ZANG Yunfei, ZHOU Junxiang
( School of Materials Science & Engineering, Chang'an University, Xi'an 710061, China)
Abstract: In order to study the influence of acidity on leaching characteristics of cationic emulsified asphalt in
solution, the immersion experiments of cationic emulsified asphalt specimens in acid solution with different PH
values were designed. Technical indexes, such as suspended solid particles, chemical oxygen demand, total
hardness and cationic emulsifier content in immersion solution were studied with chemical analysis methods,
such as spectrophotometric method, titrimetric method and weight loss method; and the influence of acidity on
cationic emulsifier, asphalt component and Ca*, Mg*leaching characteristics was investigated. The results
show that the emulsifier, asphalt components, aand Mgt in cationic emulsified asphalt can all be leached.
The leached amount of asphalt component and cationic emulsifier is great. The higher the acidity of immersing
solution, the greater the leached amount. However, the acidity of immersion solution has less influence on the
leaching of the emulsifier. Besides, the leached amount of Cat and Mg" is less. The acidity of immersion so
lution has almost no influence on the leached amount of Ca"and Mg
Key words: cationic emulsified asphalt; acid solution; chemical analysis method leaching characteristic
公路用乳化沥青制作时加入了油一水型乳化组分会被水溶解、浸出,造成水体污染46的;沥青组分
剂口,当乳化沥青路面长期浸泡水中时,乳化剂会浸浸出还可改变沥青性质,加速沥青老化9.然而,国
出且溶于水中,使材料组分比例改变,从而影响路面内外对乳化沥青的浸出性能研究甚少
使用寿命.另外,乳化剂和沥青组分浸出后进入水
针对以上问题,本文采用分光光度法、重量法、
中,会造成局部水体污染.近年来,部分学者研究滴定法等化学分析方法,精准测定浸泡液中固体悬
了石油沥青在水中的浸出性能,结果表明,石油沥青浮颗粒量(SS)、化学耗氧量(COD)、总硬度和阳离
收稿日期:,2013-07-02;修订日期:2013-07-2れ
基金项目:国家自然科学基金资助项目(50908021,51210105015);陕西省自然科学基金资助项目(2014JM7272)
第一作者:王撮军(1978-),男,山东濰坊人,长安大学教授,硕土生导师,博士.E-mail:wangzhenjun029④163.com