The Mix Ratio Design of Super Micrometer in the Preventive Maintenance of Expressway
With the continuous operation of expressways,pavement diseases increase gradually,and road driving quality decreases year by year.Pavement maintenance has become an inevitable problem.Micro-surface technology is one of the common preventive maintenance tech-nologies for pavement.In this paper,based on the actual project of Huizhou section of Guangzhou to Heyuan Expressway,the raw materials and mix ratio of the micro-surface were designed.The composition ratio was 5～8mm machine-made sand,3～6mm machine-made sand,0～3mm machine-made sand,cement,water and emulsified asphalt=24∶14∶60∶2∶7∶11.5,and the test section was paved and tested.The mixing ratio effect is verified,which can provide reference for other engineering super micro surface technology.
Super micro surfaceHighwayPreventive maintenanceMix ratio design
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