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实验室用泡沫沥青试验机及其发泡性能

DOI: 10.11830/ISSN.1000-5013.2014.01.0097

Keywords: 沥青, 泡沫沥青, 半衰期, 膨胀比

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Abstract:

利用自主研发的实验室沥青发泡装置,在155,165,175 ℃温度下,将中石油AH70和国创AH70两种沥青进行发泡.研究表明:在可发泡温度范围内,同一温度下产生的泡沫沥青,随着发泡用水量的增加,膨胀率先出现增大,后降低现象.当温度超过175 ℃时,在适当用水量范围内,用水量一定,膨胀率随发泡温度升高出现衰减.气压对半衰期的影响没有用水量对半衰期的影响大,只有在1%加水量的条件下,气压对试验结果有显著的影响.本设备在温度为175 ℃、用水量为2.75%时,达到最佳发泡效果,膨胀率和半衰期分别为14.3倍和

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