掺不同细骨料的碾压式沥青混凝土的力学试验研究

Research on Mechanical Experiment for Adding Different Fine Aggregate in Roller Compacted Asphalt Concrete

碾压式沥青混凝土是目前在沥青混凝土心墙工程中广泛使用的材料,在配合比设计中单掺人工砂的方法应用较多但成本较高。运用混掺人工砂和天然砂配合比的方法,对沥青混凝土的各项力学性能进行试验。研究结果表明:采用人工砂和天然砂混掺的碾压式沥青混凝土的配合比的各项性能均满足配合比设计的要求,同时在一定程度上降低了沥青混凝土的成本。

The roller compacted asphalt concrete is the material widely used in asphalt concrete core wall.In the mix design,the single-doped artificial sand method is used too much,but its cost is higher.Here,by using the method for mixing the artificial sand and natural sand,the mechanical properties of the asphalt concrete are tested.The results show that the mechanical properties of the asphalt concrete from sand-mixing test could not only meet the requirments of the mix design,but also reduce the cost of asphalt concrete to a certain extent.