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温拌沥青混合料节能减排效果的测试与分析

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Keywords: 道路工程,温拌沥青混合料,测试分析,沥青烟,温室气体,节能,减排

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Abstract:

针对温拌沥青混合料所具有的节能减排效果进行了定量分析。首先,分别在拌和厂、施工现场以及试验室测试了有害气体排放的情况。结果表明(1)与热拌沥青混合料相比,采用温拌沥青混合料可大大降低在拌和生产过程中所排放出的有害气体,其中二氧化碳和氧化氮类气体的排放分别下降60.0%和72.6%;(2)温拌沥青混合料在摊铺过程中所排放出沥青烟、苯可溶物及苯并[a]芘都可比热拌沥青混合料下降80%以上;(3)沥青混合料的温度达到140℃左右时,沥青烟等的排放量会成倍急剧上升。其次,采用理论计算和实际测试相结合的方法,确定了温拌混合料的节能效果。计算结果表明改性和未改性的温拌沥青混合料可分别比相应的热拌沥青混合料节约能耗28.7%和22.9%。

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