布敦岩沥青混合料路用性能研究

Research on the Pavement Performance of Buton Rock Asphalt

通过试验验证了BUTON(布敦)岩沥青混合料的路用性能。利用GTM试验方法对掺加不同掺量布敦岩沥青的混合料进行了配合比设计,得出了最佳油石比和标准密度;并对 0、10%、15%、20%掺量的布敦岩沥青混合料的高温抗车辙性能、低温抗裂性能和水损害性能进行了试验研究;结果表明掺加布敦岩沥青后沥青混合料的动稳定度由906次/mm提高到 2032次/mm,低温弯曲应变由2050με提高到2940με,冻融劈裂强度比由85．5%提高到 98．6%;并且随着布敦岩沥青掺量的增加,路用性能仍继续提高。试验结果说明了布敦岩沥青混合料是一种性能优良的沥青混合料。

According to the experiment of the BUTON rock asphalt mixture, it is verified that it can be used in the road. The mixed ratio of BUTON rock asphalt mixture with different proportion was designed, by the GTM experimental method. Then, the optimum proportion of the oil and stone, and the standard density were obtained. The performances of the resisting rut under high temperature, the resisting dehiscence under low temperature, and the resisting damage by water of the BU- TON rock asphalt mixture with 0. 10%, 15%, 20% proportion have been researched. The result indicated that the dynamic stability rised from 906 times/mm to 2032 times/mm, the bending strain under low temperature rised from 2 050 με to 2 940 με, the freeze-thaw cleavage strength rised from 85.5% to 98.6% And with the the proportion of BUTON rock asphalt rising, the mixture can he better used in road. It indicates that the BUTON rock asphalt mixture is good in performance.