【摘要】 通过试验研究了油石比、集料级配对透水性沥青混凝土的空隙率和透水性能、单轴压缩、弯曲和劈裂等力学性能的影响.结果表明,在油石比不变的情况下,透水性沥青混凝土的空隙率、连续空隙率和透水系数随着大粒径集料含量的增加而增大;同一颗粒级配下,透水性沥青混凝土的空隙率、连续空隙率和透水系数随着油石比的增大而减小.油石比和集料级配对抗压性能、弯拉性能、劈裂性能的影响规律都不一样.因此,应根据实际工程需要选择相应的具有高透水性、良好力学性能的集料级配和油石比.更多还原

【Abstract】 The experiments were carried out to study the regulations of the porosity and water permeability,mechanic performances such as single-axial compression,flexural and splitting properties affected by the coarse aggregate and the asphalt-aggregate ratio of porous bituminous concrete. The result indicated that the porosity,the continuous porosity and the permeability coefficient increased with the content of the maximum coarse aggregate under the condition that the asphalt-aggregate ration was identity. And the porosity,the continuous porosity and the permeability coefficient reduced with the asphalt-aggregate ration under the condition that the content of the maximum coarse aggregate was identity. The regulations of single-axial compression,flexural and splitting properties affected were different by the coarse aggregate and the asphalt-aggregate ratio. Therefore,the aggregate gradation and the asphalt-aggregate ratio with the higher water permeability and the better mechanic performances can be selected according to the practical requirements.更多还原