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Performance of Waterborne Epoxy Emulsion Sand Fog Seal as a Preventive Pavement Maintenance Method: From Laboratory to Field
Advances in Materials Science and Engineering ( IF 2.098 ) Pub Date : 2020-09-30 , DOI: 10.1155/2020/6425817
Chichun Hu 1 , Rui Li 2 , Jianying Zhao 1 , Zhen Leng 2 , Wanwei Lin 1
Affiliation  

To preserve the existing asphalt pavement and extend its service life, various preventive maintenance methods, such as chip seal, slurry seal, fog seal, and microsurfacing, have been commonly applied. Sand fog seal is one of such maintenance methods, which is based on the application of bitumen emulsion and sand. Thus, its performance is largely dependent on the properties of the bitumen emulsion and sand. This study aims to develop an improved sand fog seal method by using waterborne epoxy resin as an emulsion modifier. To this end, both laboratory tests and field trials were conducted. In the laboratory, the wet track abrasion and British pendulum test were performed to determine the optimum sand size for the sand fog seal, and the rubbing test was carried out to evaluate the wearing resistance of the sealing material. In the field, pavement surface regularity before and after the sand fog seal application was measured using the 3 m straightedge method, and the surface macrotexture and skid resistance were evaluated with the sand patch method and British pendulum test, respectively. The laboratory test results indicated that the optimum sand size range is 0.45–0.9 mm, and the sand fog seal with waterborne epoxy resin showed good wearing resistance and skid resistance. The field test results verified that both the pavement texture and skid resistance were substantially improved after sand fog sealing.

中文翻译:

水性环氧乳液砂雾密封作为预防性路面维护方法的性能:从实验室到现场

为了保护现有的沥青路面并延长其使用寿命,通常采用了各种预防性维护方法,例如切屑密封,泥浆密封,防雾密封和微表面处理。沙雾密封是这种维护方法之一,它基于沥青乳液和沙子的应用。因此,其性能在很大程度上取决于沥青乳液和沙子的性能。这项研究的目的是通过使用水性环氧树脂作为乳液改性剂来开发一种改进的沙雾密封方法。为此,进行了实验室测试和现场试验。在实验室中,进行了湿履带磨损和英式摆锤测试,以确定用于沙雾密封的最佳沙子尺寸,并进行了摩擦测试以评估密封材料的耐磨性。在该领域,使用3 m直尺法测量在应用沙雾密封之前和之后的路面表面平整度,并分别通过沙斑法和英国摆式试验评估表面宏观纹理和防滑性。实验室测试结果表明,最佳的砂粒尺寸范围是0.45-0.9 mm,并且水性环氧树脂的防雾密封件具有良好的耐磨性和防滑性。现场测试结果证明,砂雾密封后,路面质地和防滑性能都得到了显着改善。实验室测试结果表明,最佳的砂粒尺寸范围是0.45-0.9 mm,并且水性环氧树脂的防雾密封件具有良好的耐磨性和防滑性。现场测试结果证明,砂雾密封后,路面质地和防滑性能都得到了显着改善。实验室测试结果表明,最佳的砂粒尺寸范围是0.45-0.9 mm,并且水性环氧树脂的防雾密封件具有良好的耐磨性和防滑性。现场测试结果证明,砂雾密封后,路面质地和防滑性能都得到了显着改善。
更新日期:2020-09-30
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