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本文通过调整沥青用量来改变混合料的粉胶比分别为0.6、0.9、1.2,并采用粗、中、细级配研究两者对混合料的高温稳定性以及水稳定性的影响。实验结果表明中、细级配时,混合料的动稳定度和残留稳定度随粉胶比增大而降低当级配较粗时,随粉胶比的增大而增大,但TSR则出现一直降低的现象。最后建议级配较粗时粉胶比的范围宜为0.9-1.2,级配为中、细时粉胶比的范围宜为0.6-0.9。
In this paper, the amount of asphalt to adjust the mixture to change the ratio of cement powder were 0.6,0.9,1.2, and the use of coarse, medium and fine gradation study of the mixture of high temperature stability and water stability. The experimental results show that the dynamic stability and residual stability of the mixture decrease with the increase of the ratio of powder to binder when the fine and medium gradation is used. When the gradation is coarse, the TSR increases with the increase of the ratio of powder to binder Has been decreasing phenomenon. The final recommended grading coarse powder ratio range should be 0.9-1.2, grading as, fine powder ratio range should be 0.6-0.9.