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A platform for research: civil engineering, architecture and urbanism
Cold-mixed and cold-laid ultrathin asphalt wearing layer and preparation method thereof
The invention relates to the technical field of preventive maintenance of pavements, in particular to a cold-mixed and cold-laid ultrathin asphalt wearing layer and a preparation method thereof, and the asphalt wearing layer comprises a bonding layer and an asphalt layer; the adhesive layer is formed by spraying spray type polymer modified emulsified asphalt, and the asphalt layer is formed by paving a cold-mixed asphalt mixture; the dynamic viscosity of the spray type polymer modified emulsified asphalt at 60 DEG C is greater than or equal to 20000 Pa.s, the softening point is greater than or equal to 75 DEG C, and the elastic recovery at 25 DEG C is greater than or equal The asphalt film thickness of the cold-mixed asphalt mixture is greater than or equal to 16 microns, VCAmix is less than or equal to VCADrc, the Marshall stability is greater than or equal to 5.5 kN, and the scattering is less than or equal to 8%. According to the cold-mixed and cold-laid ultrathin asphalt wearing layer and the preparation method thereof provided by the scheme, normal-temperature construction can be realized, carbon emission and maintenance cost in a pavement maintenance period are greatly reduced, and the technical problem of high construction difficulty of a traditional hot-mixed wearing layer is solved; the pavement performance and the driving quality can be ensured, and the technical problems that an existing cold mixing wearing layer is short in service life and poor in pavement performance are solved.
本发明涉及路面预防性养护技术领域，尤其涉及一种冷拌冷铺超薄沥青磨耗层及其制备方法，沥青磨耗层包括粘层和沥青层；粘层由喷洒型聚合物改性乳化沥青喷洒而成，沥青层由冷拌沥青混合料铺设而成；喷洒型聚合物改性乳化沥青的60℃动力粘度≥20000Pa·s，软化点≥75℃，25℃弹性恢复≥85％；冷拌沥青混合料的沥青膜厚度≥16um，VCAmix≤VCAdrc，马歇尔稳定度≥5.5kN，飞散≤8％。本方案提出的一种冷拌冷铺超薄沥青磨耗层及其制备方法，其能实现常温施工，大幅降低路面养护周期内的碳排放和维养成本，解决传统热拌磨耗层的施工难度大的技术问题；又能确保路用性能和行驶品质，解决现有冷拌磨耗层的使用寿命短、路面性能较差的技术问题。
Cold-mixed and cold-laid ultrathin asphalt wearing layer and preparation method thereof
The invention relates to the technical field of preventive maintenance of pavements, in particular to a cold-mixed and cold-laid ultrathin asphalt wearing layer and a preparation method thereof, and the asphalt wearing layer comprises a bonding layer and an asphalt layer; the adhesive layer is formed by spraying spray type polymer modified emulsified asphalt, and the asphalt layer is formed by paving a cold-mixed asphalt mixture; the dynamic viscosity of the spray type polymer modified emulsified asphalt at 60 DEG C is greater than or equal to 20000 Pa.s, the softening point is greater than or equal to 75 DEG C, and the elastic recovery at 25 DEG C is greater than or equal The asphalt film thickness of the cold-mixed asphalt mixture is greater than or equal to 16 microns, VCAmix is less than or equal to VCADrc, the Marshall stability is greater than or equal to 5.5 kN, and the scattering is less than or equal to 8%. According to the cold-mixed and cold-laid ultrathin asphalt wearing layer and the preparation method thereof provided by the scheme, normal-temperature construction can be realized, carbon emission and maintenance cost in a pavement maintenance period are greatly reduced, and the technical problem of high construction difficulty of a traditional hot-mixed wearing layer is solved; the pavement performance and the driving quality can be ensured, and the technical problems that an existing cold mixing wearing layer is short in service life and poor in pavement performance are solved.
本发明涉及路面预防性养护技术领域，尤其涉及一种冷拌冷铺超薄沥青磨耗层及其制备方法，沥青磨耗层包括粘层和沥青层；粘层由喷洒型聚合物改性乳化沥青喷洒而成，沥青层由冷拌沥青混合料铺设而成；喷洒型聚合物改性乳化沥青的60℃动力粘度≥20000Pa·s，软化点≥75℃，25℃弹性恢复≥85％；冷拌沥青混合料的沥青膜厚度≥16um，VCAmix≤VCAdrc，马歇尔稳定度≥5.5kN，飞散≤8％。本方案提出的一种冷拌冷铺超薄沥青磨耗层及其制备方法，其能实现常温施工，大幅降低路面养护周期内的碳排放和维养成本，解决传统热拌磨耗层的施工难度大的技术问题；又能确保路用性能和行驶品质，解决现有冷拌磨耗层的使用寿命短、路面性能较差的技术问题。
Cold-mixed and cold-laid ultrathin asphalt wearing layer and preparation method thereof
一种冷拌冷铺超薄沥青磨耗层及其制备方法
YU JIANGMIAO (author) / YANG NIKUN (author)
2022-09-13
Patent
Electronic Resource
Chinese
| European Patent Office | 2022
| European Patent Office | 2024
| European Patent Office | 2024
| European Patent Office | 2024