乳化沥青稳定炉渣混合料路用性能评价

摘要:

随着城市发展与人口的增长,由焚烧生活垃圾而产生的炉渣产量也逐渐增长。将炉渣资源应用在道路材料方向,能够充分利用资源能源,降低道路修建原材料的成本,同时解决道路建材紧张和短缺的问题。本文通过车辙实验、浸水劈裂实验、单轴贯入实验与无侧限抗压强度实验,对比了基质沥青混合料、普通乳化沥青混合料、乳化沥青稳定炉渣混合料及乳化沥青稳定炉渣+水泥混合料的高温抗车辙性能、水稳定性能及抗剪性能。实验结果表明,乳化沥青稳定炉渣混合料与普通乳化沥青相比,虽然高温抗车辙性能较差,但表现出更好的水稳定性与抗剪性能。将乳化沥青稳定炉渣混合料中部分矿粉替换为水泥,不仅能够弥补其高温抗车辙性能的不足,并且能够显著提升水稳定性与抗剪性能。

Abstract:

With the development of the city and the growth of population, the output of slag produced by incineration of domestic waste is also increasing gradually. The application of slag resources on the road materials could make full use of resources and energy and reduce the cost of road construction, at the same time, to solve the shortage of road building materials. In this study, the high temperature rutting resistance, water stability and shear resistance of asphalt mixture, common emulsified asphalt mixture (EAM), emulsified asphalt stabilized bottom ash mixture (BAEAM) and emulsified asphalt stabilized bottom ash + concrete mixture (C+BAEAM) were evaluated through rutting test, water immersion splitting test, uniaxial penetration test and unconfined compressive strength test. The experimental results show that compared with common EAM, BAEAM has inferior high temperature rutting resistance while it presented better water stability and shear resistance. Replacing part of mineral filler in BAEAM with cement could not only make up for its rutting resistance, but also significantly improve its water stability and shear resistance.