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通过制定室内油蚀试验方案,采用浸水马歇尔和冻融劈裂试验,分析了油蚀对TLA改性沥青混合料AC-13C的水稳定性的影响规律.研究结果表明,油蚀对水稳定性的影响与TLA掺量和油蚀时间密切相关,其中,油蚀浸水残留稳定度和油蚀冻融残留强度比随着TLA掺量增加呈现先增后减的单峰变化关系,且峰值出现在TLA掺量为30%左右;同时,初期60 min内油蚀浸水残留稳定度的降幅占总降幅的80%以上.因此,适宜的TLA掺量与及时的除油污处理可有效提高TLA改性沥青路面的抗油蚀水损坏能力.
The influence of oil erosion on the water stability of TL-modified asphalt mixture AC-13C was analyzed by developing indoor oil-erosion test scheme, immersion Marshall method and freeze-thaw splitting test.The results show that the influence of oil erosion on water stability Is closely related to the amount of TLA and the time of oil erosion. Among them, the residual stability of oil-immersed water and the residual strength ratio of oil-freeze-thaw cycle exhibit the single peak variation which increases first and then decreases with the increase of TLA content, and the peak value appears in The dosage of TLA is about 30%, while the residual stability of oil immersion immersion in the initial 60 min is more than 80% of the total decrease.Therefore, the appropriate amount of TLA and timely degreasing treatment can effectively improve the TLA modified asphalt Pavement resistance to water erosion damage.