天然砾石骨料对心墙沥青混凝土力学性能影响分析

Effect of natural gravel aggregate on mechanical property of asphalt concrete core wall

为了探明天然砾石与人工破碎岩石作为粗骨料对心墙沥青混凝土性能的影响。在相同的基础配合比条件下,以两种不同的矿料配制沥青混凝土试件进行试验,进行了马歇尔稳定度、小梁弯曲及静三轴试验。试验结果表明:天然砾石骨料的抗变形能力优于人工破碎岩石,力学性能差别不明显。因此,天然砾石骨料可以在心墙沥青混凝土中直接应用。

In order to explore the effect of natural gravel and artificial crushed rock as coarse aggregate on the performance of core wall asphalt concrete, under the same basic mix ratio, the paper used two kinds of mineral materials to confect asphalt concrete, and conducted the marshall stability, small beam bending and static three axis test. The results show that the anti deformation ability of natural gravel aggregate is better than that of artificial broken rock, the difference of mechanical properties of the two matericals is not obvious. Therefore, the natural gravel aggregate can be directly used in the core wall asphalt concrete.