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In this paper, through laboratory experiments and theoretical analysis, a three-level pairing in Sichuan broken gravel asphalt mixed material physical indicators and road performance of the in-depth analysis and research. First, through the study of the physical indicators, there is a good correlation between the physical indicators aggregate ratio of crushing gravel asphalt mixture. Gradually increases as the aggregate ratio of gross volume relative density increases gradually, VMA \; graded finer the gross volume relative density, the greater the asphalt saturation, porosity, VMA, the water absorption of the smaller and most of the physical indicators of Whetstone is smaller than the sensitivity to the changes. Recommended \Second, formed by blending crushing gravel and natural sand mixes the road with the performance of the research found that the dynamic stability 45min amount of deformation, 60min amount of deformation, freeze-thaw splitting the relationship between the intensity of the aggregate ratio close, and with the aggregate ratio DS gradually decreases gradually increasing gradually increasing deformation and TSR; flexural strength of Whetstone weaker than the sensitivity to the changes; Add 0.4% of the PA-1 asphalt anti-stripping agent, after freeze-thaw splitting strength has improved significantly; crushing gravel mixes various road performance to adapt to the climate and summarizes partition. Finally, through a comparative study of the performance on the road, crushing gravel mixture, crushing gravel and mechanisms sand blending mixes its high temperature stability and low temperature crack resistance, crushing gravel and natural sand mixed with mixed materials its low-temperature crack resistance to meet the requirements of the specification of the Sichuan region, and the water does not meet the stability, and recommends using a cationic surfactant class anti-stripping agent. Formed for crushing gravel and natural sand mixed with the mixture of its DS lower than limestone and basalt, destroy should change nearly limestone, only a difference of 12.98%; addition of anti-stripping agent, TSR closer basalt mixes and When aggregate ratio increased to 5.5, the TSR were more than basalt, limestone 9.80%, 4.03%. The completion of the subject of the broken gravel nationwide, Sichuan and other regions of the road design, construction has important reference value, especially the issues raised by crushing gravel mixes physical indicators, high temperature stability, low temperature cracking adapt to the climate, water stable aggregate ratio variation between the road performance to meet the climate partition table, broken gravel mixture to use as a high-grade pavement partition and recommended engineering Gradation engineering practice There are important guiding significance.
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