微表处混合料抗水损害性能试验研究

通过湿轮磨耗试验，研究矿料级配和矿料洁净程度对微表处混合料抗水损害能力的影响。研究表明：在油石比不变的情况下，选择较粗级配或较细级配均不会对微表处的配伍性及长期抗水损害能力有显著影响，但矿料洁净程度对微表处的抗水损害能力及耐久性有非常大的影响，微表处细集料中粘土颗粒含量微量增加，就会导致微表处抗水损害能力成倍衰减：提出微表处集料的亚甲蓝指标。

Test Research on Water Damage Resistant Performance of Mixed Materials on Micro-surfacing

This paper researches the influences of gradation and cleanness of mineral materials on water damage resistant capability of the mixed materials on micro-surfacing via the wet-wheel abrasion test . The research shows that choice of either coarse gradation or fine gradation does not greatly affects the compatibility on micro-surfacing and long-term water damage resistant capability under the condition of constant bitumen-aggregate ratio, but the cleanness of mineral materials have significant influences on water damage resistant capability and endurance on micro-surfacing,the slight increase of clay particle content in fine aggregate on micro-surfacing will lead to the multiplied reduction of water damage resistant capability on micro-surfacing. The paper proposes the methylene blue index in aggregate on micro-surfacing.