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沥青三大指标是多少
更新时间: 2020-11-02 00:00:00  

沥青三大指标是针入度、延度、软化点,针入度越大,表示沥青越软,粘度越小,延度采用延度仪测定,值越大,表示塑性越好,软化点越高,表示耐热性越好。

沥青是由不同分子量的碳氢化合物及其非金属衍生物组成的黑褐色复杂混合物,是高黏度有机液体的一种,呈液态,表面呈黑色,可溶于二硫化碳。

关键词: 沥青 三大 指标 多少

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