|Table of Contents|

Segregation of asphalt mixture in mixing process(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2009年05期
Page:
116-121
Research Field:
Publishing date:
2009-10-20

Info

Title:
Segregation of asphalt mixture in mixing process
Author(s):
XIE Liyang;  ZHAO Lijun;  YAO Yunshi;  ZUO Wenjun
Key Laboratory for Highway Construction Technology and Equipment of Ministry of Education, Changan University, Xian 710064, Shaanxi, China
Keywords:
mechanical engineering;  asphalt mixture;  batch type asphalt mixing equipment;  mixing;  segregation
PACS:
U415.522
DOI:
-
Abstract:
In order to improve mixing uniformity of asphalt mixture, a method of theoretical analysis and test was used to analyze the effects of geometric parameters of the mixer, delivery modes of power and asphalt, aggregate variation in hot aggregate tank on the segregation of asphalt mixture. Reasonable measures of controlling segregation in the mixing process were put forward. The results indicate that, the reasonable geometric parameters of the mixer should ensure adequate circulation flow of the mixture in the mixer; the longitudinal arrangement of power and asphalt delivery is superior to the arrangement at the end of mixer, so it should be firstly used under the optimization of structure; the delivery proportion of aggregate in hot aggregate tank and sieve size of vibrating screen should be properly selected according to the gradation of cold aggregate. 4 tabs, 10 figs, 9 refs.

References:

［1］左文军.沥青搅拌设备级配调试技术及其应用［J］.筑路机械与施工机械化，2007,24(6):1518. ZUO Wenjun.Application and technology of gradation adjusting for asphalt mixing units［J］.Road Machinery & Construction Mechanization,2007,24(6):1518.
[2]李立寒,麻旭荣.级配离析沥青混合料性能的试验研究 ［J］.同济大学学报：自然科学版，2007,35（12）:16221626. LI Lihan,MA Xurong.Influence research of gradation segregation on performance of asphalt mixture ［J］. Journal of Tongji University:Natural Science,2007,35（12）:16221626.
[3]冯忠绪,姚运仕,冯建生.热沥青混合料碾压过程的离析现象［J］.长安大学学报:自然科学版,2006,26（3）:9699. FENG Zhongxu,YAO Yunshi,FENG Jiansheng.Rolling segregation of hot asphalt mixture［J］.Journal of Changan University:Natural Science Edition,2006,26(3):9699.
[4]孙祖望.热沥青混合料在施工过程中的不均匀性及其质量控制［J］.建筑机械,2004（10）：3031. SUN Zuwang.Nonhomogeneity in rolling hot asphalt mixture and quality control ［J］.Construction Machinery,2004（10）:3031.
[5]沈金安 .关于沥青混合料的均匀性和离析问题［J］.公路交通科技,2001,18（6）:2024. SHEN Jinan.On issues of homogeneity and separation of bitumen mixtures［J］. Journal of Highway and Transportation Research and Development,2001,18（6）:2024.
[6]JTGF 40—2004,公路沥青路面施工技术规范［S］.
[7]JT/T 270—2002,强制间歇式沥青混合料搅拌设备［S］.
[8]彭余华.沥青混合料离析特征判别与控制方法研究［D］.西安:长安大学，2006.
[9]Waddas S A,Obaidat M T,Nazem M A.Influence of aggregate type and gradation on voids of asphalt concrete pavements［J］.Journal of Materials in Civil Engineering,1998,10（2）:7685.

Memo

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Last Update: 2009-10-20