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Starting to warm

机译:开始变暖

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摘要

The Federal Highway Administration (FHWA), the National Asphalt Pavement Association (NAPA) and the National Center for Asphalt Technology (NCAT) are working with material suppliers to evaluate a group of technologies commonly called warm-mix asphalt. The processes are designed to facilitate compaction at lower temperatures. In some cases they have been used as compaction aids for stiff mixtures and also may allow the paving season to be extended. Lower production temperatures result in reduced emissions and fuel savings. Background information on warm asphalt mixtures was provided in the February issue of Roads & Bridges (See Expect cooler temperatures p 34). Initially, there were three processes developed in Europe: 1. Aspha-min zeolite developed by Eurovia; 2. Sasobit developed by Sasol International; and 3. WAM Foam by Shell and Kolo Vei-dekke.
机译:联邦公路管理局(FHWA),国家沥青路面协会(NAPA)和国家沥青技术中心(NCAT)正在与材料供应商合作,评估一组通常称为热拌沥青的技术。该工艺旨在促进在较低温度下的压实。在某些情况下,它们已被用作硬质混合物的压实助剂,也可能延长铺路季节。较低的生产温度可减少排放并节省燃料。在二月的《道路与桥梁》中提供了有关温暖的沥青混合料的背景信息(请参阅第34页的“预期较凉的温度”)。最初,欧洲开发了三种工艺:1. Eurovia开发的Aspha-min沸石; 2.由Sasol International开发的Sasobit; 3. Shell和Kolo Vei-dekke制作的WAM泡沫。

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