Repair method of bar-reinforced concrete slab of continuous bar-reinforced concrete composite asphalt pavement

Abstract

The invention discloses a repair method of a bar-reinforced concrete slab of a continuous bar-reinforced concrete composite asphalt pavement, and is mainly characterized in that an asphalt surface layer and the bar-reinforced concrete slab are subjected to slotting treatment firstly, and the plane size of an asphalt surface layer slot is 20 cm longer and wider than that of a bar-reinforced concrete slab slot; a plate between the asphalt surface slot and the bar-reinforced concrete slab slot is crushed; longitudinal and horizontal reinforcing steel bars are arranged in the bar-reinforced concrete slab slot and are connected with longitudinal and horizontal reinforcing steel bars exposed after crushing through single-side welding; the inner side edge of the asphalt surface layer slot in front of a driving direction is cut to make the tangent value of the inclined angle of the inner side edge with the horizontal direction is 2; the inner side edge and bottom of the asphalt surface layer slot are brushed with modified emulsified asphalt; and a hot mixed asphalt mixture is poured into the asphalt surface layer slot, is leveled and subjected to rolling construction, and repairing is completed. The method can effectively solve the repairing problem of the bar-reinforced concrete slab of the continuous bar-reinforced concrete composite asphalt pavement, and ensures the durability of the continuous bar-reinforced concrete composite asphalt pavement.

Description

technical field [0001] The invention belongs to the technical field of road engineering and relates to a reinforced concrete slab maintenance method suitable for continuous reinforced concrete composite asphalt pavement. Background technique [0002] Continuously reinforced concrete composite asphalt pavement is a composite pavement paved with asphalt concrete surface on the continuously reinforced concrete. It is a structural form with good performance. It has high overall strength, good driving comfort, long service life, It has the advantages of low maintenance cost and good economy in terms of long-term service performance, which can fully meet the durability requirements of the pavement structure under heavy-duty traffic conditions (such as the continuous reinforcement of the Changtan section of the Beijing-Hong Kong-Macau National Expressway in 2003) Concrete composite asphalt pavement, which has good performance so far), is the main development form of long-life pavemen...

AI Technical Summary

Problems solved by technology

The maintenance and repair method of asphalt pavement is basically the same as that of ordinary asphalt pavement, but the maintenance of reinforced concrete slabs is more complicated because it involves excavating asphalt pavement, breaking concrete slabs, restoring steel bars, etc. It also needs at least 3-7 days of curing time. If there is no suitable method to repair the continuous reinforced concrete slab, it will inevitably cause closed traffic for a long time, and the disease may reappear in a short period of time after repair due to improper methods. Cause unnecessary waste and adverse social impact

[0004] At present, there is no maintenance method for reinforced concrete slabs of continuous reinforced concrete composite asphalt pavement in this field, and the available reference methods are not targeted, scientific and reasonable enough. Reinforced concrete slab maintenance method for composite asphalt pavement, to effectively solve the maintenance problem of reinforced concrete slab for continuous reinforced concrete composite asphalt pavement, and ensure the durability and long life of continuous reinforced concrete composite asphalt pavement

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