“polymer modified bitumen”的概念、定义、翻译、参考文献-科学参考

单词	polymer modified bitumen
释义	polymer modified bitumen Encyclopedia 理学[补录条目]释 polymer modified bitumen高分子改性沥青通过机械高速剪切作用或反应性共混，将少量的高分子改性剂均匀分散在沥青中，有效降低沥青的脆化温度和温度敏感性、提高沥青的软化点和弹性以及抗永久形变性能，从而使沥青成为满足高等级的路面铺设和屋顶防水要求的建筑材料。
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