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从半刚性基层沥青混凝土路面和级配碎石柔性基层路面的优缺点入手,在级配碎石中添加少量的黏结料,考察了不同级配类型的二灰稳定碎石混合料性能,分别采用压实性能、强度和塑性变形、渗透性能进行了评价。研究表明,掺加二灰后级配碎石混合料的性能显著提高,特别是二灰的填充系数为0.9,预留12%的空隙率的混合料,能提高纯级配碎石的模量、级配碎石的施工和易性、使基层具有良好的排水性能、减少路面反射裂缝。
Starting from the advantages and disadvantages of semi-rigid base asphalt concrete pavement and graded gravel flexible base pavement, a small amount of binder was added into the graded macadam to investigate the properties of different types of lime-lime stabilized macadam mixes, Compaction performance, strength and plastic deformation, permeability were evaluated. The results show that the performance of the graded aggregate with lime-fly ash is obviously improved, especially when the fill factor of the fly ash is 0.9 and the mixture with the porosity of 12% can improve the modulus of the pure graded broken stone , Graded gravel construction and workability, so that the grass-roots drainage with good performance and reduce reflection cracks on the road.