高粘微表处的抗水损坏性能研究

Study on the Water Damage Resistance of High Viscous Microsurfaces

摘要: 微表处是一种性价比高、环保效果好，施工便捷的工艺，当下在各等级公路甚至市政道路的路面养护工程中的应用已是较为普遍，但其耐久性的不足阻碍着这一技术的更广泛的推开使用，总结下是是其自身粘附力不足，导致抵抗水损坏能力不足，进而延伸出更多形式的损坏，因此在保修期内能否抵抗自身的水损害和封住水向路面结构渗入，一直是微表处技术人员较关心的重点。因此本文将基于试验工程为依托，研究了两个主要影响因素变化下高粘度微表处的抗水损坏的性能，结果表明SBS改性乳化沥青的最佳掺量值为4%，其冻融TSR值达到最大并满足路用要求，同时当水泥用量小于1.0%时，TSR值大幅提升，一旦水泥掺量超过1.0%则混合料水稳定性改善不明显，会出现材料浪费；最终通过高速公路试验工程进行了验证，回访发现高粘微表处的工程试验段的性能良好，封水能力较好，未出现水损坏，很好的延缓了原路面老化和开裂。

Abstract: Micro surface treatment is a cost-effective, environmentally friendly, and convenient construction process that is widely used in pavement maintenance projects of various levels of highways and even municipal roads. However, its lack of durability hinders the wider application of this technology. In summary, its insufficient adhesion leads to insufficient resistance to water damage, which in turn leads to more forms of damage, Therefore, whether it can resist its own water damage and seal the infiltration of water into the pavement structure during the warranty period has always been a key concern for micro surface treatment technicians. Therefore, based on experimental engineering, this article will study the water damage resistance performance of high viscosity micro surface under two main influencing factors. The results show that the optimal dosage of SBS modified emulsified asphalt is 4%, and its freeze-thaw TSR value reaches the maximum and meets the road requirements. At the same time, when the water mud dosage is less than 1.0%, the TSR value significantly increases. Once the cement dosage exceeds 1.0%, the water stability of the mixture is not significantly improved, and material waste will occur; Finally, it was verified through an express way experimental engineering, and a follow-up visit found that the engineering test section with high viscosity micro surface had good performance, good sealing ability, and no water damage, which effectively delayed the aging and cracking of the original road surface.