半柔性路面混合料路用性能

半柔性路面是一种在开级配沥青混合料中填充水泥胶浆而形成的兼具沥青路面与水泥混凝土路面特点的复合路面。利用车辙试验来评价半柔性路面混合料的高温稳定性 ,用弯曲、劈裂试验和蠕变试验来评价半柔性路面混合料的低温和疲劳性能 ,用残留稳定度和冻融劈裂试验评价半柔性路面混合料的水稳定性 ,用残留稳定度试验来评价半柔性路面混合料的抗油蚀性能。结果表明 ,半柔性路面混合料具有优良的高温稳定性、耐疲劳性能和耐油蚀性能 ,具有较好的水稳定性和低温稳定性。在普通的水泥胶浆中掺加聚合物树脂 ,可明显改善半柔性路面混合料的低温抗裂性和水稳定性。

Pavement performance of semi-flexible pavement in laboratory

Semi-flexible pavement is generally described as an open-graded asphalt concrete mixture, which is filled with Portland cement grout.It is a composition pavement surface that uses a unique combination of asphalt concrete and Portland cement concrete materials in the same layer. The wheel tracking device was utilized to measure its rutting resistance at high temperature.The bend test, split test and creep test were carried out to measure crack resistance at low temperature. The fatigue resistance performance of semi-flexible pavement mixture,the retain stability and improved Lottoman test were used to measure water susceptibility of semi-flexible pavement mixture.The results show that the semi-flexible pavement mixture has very super rutting resistance, fatigue resistance and oil resistance performance, it has better water susceptibility and crack resistance performance. When polymer resin is added into cement grout,it can signally improve crack resistance and water susceptibility performance.