Asphalt concrete surface layer construction joint treatment method

Abstract

The invention belongs to the field of municipal roads, highways and civil aviation, and particularly relates to an asphalt concrete surface layer construction joint treatment method. According to the method, a joint treatment scheme that firstly, an asphalt concrete surface layer is paved and re-pressed, when the temperature of a pavement is still in a high state, an edge cutter is adopted to extrude the pavement neatly by means of the self weight of a roller of a roller, and then an asphalt mixture is paved on a new paving belt and is tightly bonded through rolling is adopted. In the paving construction of the asphalt pavement, the asphalt pavement joint is treated by adopting the technical scheme, so that the compactness of the joint is improved, the bonding strength of the joint is enhanced, the pavement damage caused by joint cracking and water seepage is prevented, and great significance is achieved for improving the construction quality of the asphalt pavement and improving the engineering benefit.

Description

technical field [0001] The invention belongs to the fields of municipal roads, highways and civil aviation, and in particular relates to a method for treating construction joints of asphalt concrete surfaces. Background technique [0002] At present, there are two types of joints for hot-mix and warm-mix asphalt concrete surfaces: longitudinal joints and transverse joints. Longitudinal joints are further divided into hot joints and cold joints. The hot joint technology is to use two or more paver to carry out the echelon operation. The asphalt mixture at the joint of two adjacent paving belts has not been rolled yet and is still in a high temperature state. Vibratory rollers are used to vibrate the mixture particles. It can be rearranged, eliminate voids, and make the asphalt mixture dense; the cold joint technology is to splice, widen and compact the existing asphalt concrete surface or the surface that has been rolled, compacted and cooled. The joints of the existing surf...

AI Technical Summary

Problems solved by technology

[0003] Disadvantages: Compared with the asphalt surface construction of the standard section, if the hot joint technology is used in the road level crossing, road surface channelization widening section and runway slippery, more asphalt paver is required to meet the requirements. Due to the large temperature difference between the old and new surfaces on both sides of the joint and the smooth joint surface generated by cutting, the cold joint technology will result in low joint strength and insufficient density. The joints are prone to water seepage and cracking, and the asphalt surface layer will be damaged early after rainwater seepage

[0004] Asphalt concrete pavement has the advantages of smooth surface and good wear resistance, but with the increasing traffic volume, the aging of asphalt and the cracking of the road surface seriously restrict the safe operation of the road

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