融雪剂对沥青路面水稳定性的影响

Effect of Snow-melting Agent on Water Stability of Asphalt Pavement

为了探究不同路面状态下,融雪剂类型、融雪剂溶液浓度、冻融循环次数对沥青路面水稳定性的影响情况,通过设置静态与动态条件模拟路面良好以及路面出现裂缝2种情况。结果表明:在静态条件下,路面的水稳性能与融雪剂的冰点、冻融循环次数关系较大,冰点越高、循环次数越多,水稳定性下降越明显;在动态条件下,溶液浓度是主要影响因素,融雪剂通过对裂缝中的集料产生作用,进而影响路面水稳定性,建议使用醋酸盐型融雪剂。

In order to study the effect of the types of snow-melting agents, solution concentration of snow-melting agent and freeze-thaw cycles on the water stability of asphalt pavement under different conditions, roads in good condition and with cracks were simulated by setting statistic and dynamic conditions. The results show that under the static condition, the water stability of the pavement is related to the freezing point and freezing-thawing cycles. The higher the freezing point and the number of cycles, the more obvious the decline of water stability. Under dynamic condition, the solution concentration is the main influencing factor. Snow-melting agent affects the water stability of pavement by having an effect on the aggregate under the cracks. Therefore, the use of acetate-type snow-melting agent is recommended.