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为降低路面和冰雪之间的黏结力,用有机硅憎水材料作为道路表面涂层.有机硅憎水涂层技术的除冰效果用接触角实验和剪切实验来表征,其耐久性用加速加载磨耗实验来评价,而其抗滑性能则用摆式摩擦法和铺砂法来评价.接触角实验结果表明,有机硅憎水涂层材料与水的接触角为100.2°,具有很好的憎水性能.其次,通过剪切实验可以得出:在涂有有机硅憎水材料的情况下,冰层与试件表面的最大剪切应力仅为0.06 MPa,低于没有进行表面涂层处理的最大剪切力3.5 MPa;剪切之后,冰层能够很完整地从试件表面脱落.加速加载磨耗实验表明,在经过一定时间的磨耗之后,残留在沥青路面构造深度里的有机硅涂层材料仍然具有除冰雪的效果.表面涂层后的道路表面的BPN值和构造深度值均有所降低,但是其仍然远远大于规范的要求,确保了安全性.研究表明,沥青道路表面涂层技术能有效地降低沥青路面与冰层的黏结,从而解决冬季道路结冰影响行车安全的问题.
In order to reduce the adhesive force between the pavement and ice and snow, silicone hydrophobic material is used as the road surface coating.The deicing effect of the silicone hydrophobic coating technology is characterized by the contact angle experiment and the shearing test, Loaded wear test to evaluate, and its anti-skid performance is the use of pendulum friction method and sand method to evaluate the contact angle experimental results show that the silicone hydrophobic coating material with water contact angle of 100.2 °, with good Hydrophobic property.Secondly, the shear experiment shows that the maximum shearing stress of the ice layer and the specimen surface is only 0.06 MPa when the silicone hydrophobic material is coated, which is lower than that without the surface coating treatment Of the maximum shear force of 3.5 MPa; After the shear, the ice layer can be completely from the surface of the specimen shedding accelerated loading abrasion experiments show that after a certain period of wear, the residual depth of asphalt pavement structure in the depth of the silicone coating The material still has the effect of removing snow and ice.The road surface BPN value and structure depth value after the surface coating are reduced, but it is still far greater than the standard requirements to ensure the safety.The study shows that asphalt road surface coating Technology can Effectively reducing asphalt pavement and ice bonding to address icing winter road traffic safety issues.