...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Construction and Building Materials >Moisture resistance and compactibility of asphalt concrete produced in half-warm mix asphalt technology with foamed bitumen
【24h】

Moisture resistance and compactibility of asphalt concrete produced in half-warm mix asphalt technology with foamed bitumen

机译：半热混合沥青技术与泡沫沥青生产的沥青混凝土的耐湿性和致密性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Current regulations regarding emissions, as well as the efforts focused on reducing energy intensity of building materials production create a need for implementing new road construction technologies. Particular attention is being paid to the lowering of asphalt concrete production temperature, which is about 160 degrees C. In response to this need warm mix asphalt (WMA) technologies have been developed which allow producing asphalt mixes at temperatures about 20-30 degrees C lower than those of conventional methods. However, it was only after half warm mix asphalt (HWMA) was introduced that the mixing temperature of asphalt concrete with foamed bitumen could be reduced by as much as 60 degrees C. Asphalt pavements constructed with HWMA may have a reduced service life and lower resistance to environmental factors (e.g. water). This paper presents the results from the tests with one freeze cycle and from the moisture sensitivity analysis conducted for the low-temperature asphalt concrete (AC 8) with foamed bitumen and the control mix produced according to conventional hot mix asphalt technology. It was found that the modification of 50/70 bitumen (before foaming) with the addition of 2.5% FT synthetic wax had a beneficial effect on the properties of asphalt concrete mixes under investigation. The ITSR indices were compared having been determined in accordance with procedures based on European and AASHTO standards that are widely used in Poland. The analysis was extended to include the compactibility evaluation of low-temperature bituminous mixes and the impact of air voids on the mechanical parameters. The foamed asphalt concrete modified with 2.5% FT wax was found to satisfy the requirements for moisture resistance determined during the test with one freeze cycle. (C) 2016 The Author(s). Published by Elsevier Ltd.
机译：当前关于排放的法规，以及致力于降低建筑材料生产的能源强度的工作，导致需要实施新的道路施工技术。特别关注降低沥青混凝土生产温度（大约160摄氏度）。为满足这一需求，已经开发了温拌沥青（WMA）技术，该技术可使沥青混合料的生产温度降低20-30摄氏度。比传统方法但是，只有在引入半温混合沥青（HWMA）之后，沥青混凝土与泡沫沥青的混合温度才能降低多达60摄氏度。用HWMA建造的沥青路面可能会降低使用寿命并降低阻力环境因素（例如水）。本文介绍了一个冷冻周期的测试结果以及对泡沫沥青的低温沥青混凝土（AC 8）以及根据常规热拌沥青技术生产的控制拌合料进行的水分敏感性分析。结果发现，添加2.5％FT合成蜡对50/70沥青进行改性（发泡之前）对所研究的沥青混凝土混合料的性能具有有益的影响。比较了ITSR指数，这些指数是根据根据在波兰广泛使用的欧洲和AASHTO标准制定的程序确定的。分析扩展到包括低温沥青混合料的可压缩性评估以及气孔对机械参数的影响。发现用2.5％FT蜡改性的泡沫沥青混凝土满足一个冷冻循环测试中确定的耐湿性要求。 （C）2016作者。由Elsevier Ltd.发布

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号