【摘要】 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10.8s.更多还原

【Abstract】 By means of self-developed laboratory asphalt foaming device,two kinds of AH70asphalt materials were studied under three temperatures 155℃,165℃and 175℃.It is showed that:under 150-175℃,the expansion ratio increases firstly and then decreases as the water content increases;under the temperature more than175℃and proper water content,the expansion ratio decreases as the temperature increases.The influence of pressure on half life is less than the influence of water content,only under 1% water content,the pressure influences the significantly on the test results.Under 175℃and 2.75% water content,the asphalt of AH70has the best foaming properties,meanwhile,the expansion ratio is 14.3and half life was 10.8s.更多还原