基于微波加热的沥青路面永久性坑槽修补工艺

发布时间：2019-06-20 01:19

【摘要】：鉴于传统的坑槽修补法存在冷接缝、接缝处新旧料粘结薄弱、新料难压实、空隙率偏大易渗水等缺点导致寿命短的现状,提出了基于微波加热的沥青路面永久性坑槽修补法。采用微波加热源,新旧料温度一致,壁面为自然面,接缝可有一定倾角,粘结良好,力学计算表明可改善坑槽的拉剪应力,实现了结构永久性;采用易密实沥青混合料为修补材料,材料参数均匀、无突变,实现了材料永久性;关键施工工艺采用热沥青为粘结料、采用压缝带增强接缝粘结力及防水性能,形成了立体防水体系,实现了防水永久性。结构、材料、防水三大永久性相辅相成,基于微波加热的整套坑槽修补工艺从理论上和实体工程验证上均表明是永久性的坑槽修补法。
[Abstract]:In view of the fact that the traditional pothole repair method has cold joints, the bond of new and old materials at the joints is weak, the new materials are difficult to compaction, and the voidage is too large and easy to seep into water, the permanent pothole repair method of asphalt pavement based on microwave heating is put forward. The microwave heating source is used, the temperature of the new and old materials is the same, the wall is the natural surface, the joint can have a certain inclination angle and good bond, the mechanical calculation shows that the tensile and shear stress of the pit can be improved and the structure is permanent, and the easily dense asphalt mixture is used as the repair material, the material parameters are uniform and there is no sudden change, and the material permanence is realized. In the key construction technology, hot asphalt is used as binder, and seam belt is used to enhance the bonding force and waterproofing performance of the joint, which forms a three-dimensional waterproof system and realizes waterproofing permanence. The three permanent methods of structure, material and waterproofing complement each other. The whole pothole repair process based on microwave heating shows that it is a permanent pothole repair method both in theory and in solid engineering verification.
【作者单位】：长安大学公路学院;公路交通安全与应急保障技术及装备交通运输行业研发中心;广东华路交通科技有限公司;
【基金】：交通运输部建设科技计划项目(编号:2014 318 J23 150) 广东省交通运输厅科技项目(编号:科技-2012-02-009)
【分类号】：U416.217;U418.6

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