Fiber bitumen macadam seal coat method

Abstract

The invention discloses a fiber bitumen macadam seal coat method, which comprises the following steps of: (1) preparing emulsified bitumen, namely uniformly mixing bitumen with liquid soap in a volume ratio of 62.8:37.2, maintaining the temperature of between 60 and 70 DEG C for 24 hours, preparing the emulsified bitumen, adding modifier latex into the emulsified bitumen and stirring uniformly toobtain the modified emulsified bitumen; (2) spraying a first layer of modified emulsified bitumen; (3) spraying a layer of fiber, wherein the using amount of the fiber is between 50 and 70 g / cm<2>, and the length is 60mm; (4) spraying a second layer of modified emulsified bitumen; (5) spraying macadam; and (6) rolling, namely rolling for 2 to 5 times, wherein the primary pressing speed does not exceed 2km / h, and the repressing rolling speed is controlled to between 2.0 and 3.0 km / h. The fiber bitumen macadam seal coat method has the advantages that: (1) the fiber bitumen macadam seal coat hasgood stress absorption and dispersion capacity; (2) the fiber bitumen macadam seal coat has high wear resistance for road surfaces; (3) the fiber bitumen macadam seal coat has high waterproof performance for road surfaces; (4) the fiber bitumen macadam seal coat has high stability for road surfaces; and (5) the fiber bitumen macadam seal coat has construction rapidness.

Description

Technical field: [0001] The invention belongs to the field of road maintenance, and relates to a fiber asphalt macadam sealing method, in particular to a fiber asphalt macadam sealing method suitable for the hot summer and hot winter regions along the southeast coast of my country. Background technique: [0002] Existing road preventive maintenance measures include slurry seal, gravel seal and so on. [0003] Slurry sealing technology: use emulsified asphalt, aggregate, mineral fines, water and chemical additives to form materials, concentrate on the slurry sealing machine, and mix them into a paste in a certain proportion through the sealing machine , Flow uniform slurry mixture, spread evenly on the road surface to form a dense, strong and wear-resistant surface seal. [0004] Due to the good technical performance of the slurry seal, my country has done a lot of experimental research and application in the application of the slurry seal. At present, it is mainly used for ...

AI Technical Summary

Problems solved by technology

[0019] (4) Changes in surface roughness and saturation: uneven mineral material gradation, segregation during the mixing and transportation of the slurry mixture, too little slurry mixture in the paving tank, and different smoothness of the original road surface. The consistency of the slurry mixture is inconsistent, the ratio of oil to rock is inconsistent, and the paving layer is not fully demulsified before the traffic is opened.

Images