Application of Hot Mix Ultra Thin Cover Thus-10 in Mainline Highway Maintenance
[Purposes]The application of hot mix thin layer Thus-10 in trunk highway maintenance is studied.[Methods]This article is based on the volume-performance balance method to design the Thus-10 mix ratio and conduct indoor verification of its road performance.[Findings]The production mix ratio of Thus-10 has been determined∶1#(5～10 mm)∶2#(3～5 mm)∶3#(0～3 mm)∶mineral powder=45∶23∶25∶7,the optimal oil stone ratio is 6.3%,asphalt:high viscosity additive=96:4,and fiber content is 0.3%of the mixture.Thus-10 has excellent high-temperature performance,water stability,and low-temperature performance,which is superior to other ultra-thin overlay asphalt mixtures of the same type.Based on the maintenance project of Provincial Highway S324 in Suqian City,Thus-10 has been applied,forming a construction technology guide for hot mix ultra-thin Thus-10.[Conclusions]Thus-10 has been ap-plied in the maintenance of trunk highways in Jiangsu,Guizhou,Zhejiang and other regions,and has good promotion and application scenarios.
hot mixed thin layer Thus-10mix ratioroad performancemaintenanceworkmanship
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