Pavement structure for cement concrete bridge deck and pavement method thereof

Abstract

The invention relates to the technical field of traffic engineering, in particular to a pavement structure directly paved on a cement concrete bridge deck and a pavement method thereof. The pavement structure for the cement concrete bridge deck comprises a waterproof bonding layer, a stress absorption layer and a road surface layer, which are sequentially paved on the cement concrete bridge deck from bottom to top, wherein the waterproof bonding layer comprises a basalt gravel layer bonded on the cement concrete bridge deck through epoxy resin and a reactive waterproof binding agent layer coated on the basalt gravel layer. The invention also discloses a pavement method for the pavement structure. The pavement structure and the pavement method thereof enhance the bonding and shearing action between a pavement layer and a cement concrete slab, improve the using effect and service life of the pavement layer, reduce the temperature of mixing, transporting and paving, save energy and reduce environmental pollution; and the total thickness of the bridge deck pavement system is only 30 to 40 mm, so that the dead load of the bridge deck is greatly reduced, the pavement materials are saved and the construction cost is reduced.

Description

technical field [0001] The invention relates to the technical field of traffic engineering, in particular to a pavement structure directly laid on a cement concrete bridge deck and a pavement method thereof. Background technique [0002] Due to the high structural rigidity of the cement concrete bridge deck, most of the current domestic projects do not make special design treatment, and only the bridge deck pavement is designed as a wear layer. At present, the deck pavement of cement concrete bridges has the following problems: [0003] 1. The pavement layer and the bridge deck are not waterproof and have insufficient bonding performance. [0004] If the pavement layer does not consider the waterproof design, water seeps into the gap between the pavement layer and the bridge deck to form dynamic scour, or freeze-thaw damage occurs in cold regions, resulting in the detachment of the pavement layer from the bridge deck, and the early failure of the bridge deck pavement. On t...

AI Technical Summary

Problems solved by technology

[0006] There are two main reasons for the insufficient waterproof bonding performance between the pavement layer and the bridge deck: ①The floating slurry, impurities, and pollutants on the surface of the cement concrete are not cleaned up, and the roughness of the cement concrete bridge deck is not enough; ②The waterproof bonding layer itself is bonded performance is not enough

[0007] 2. Due to the temperature change and the large deflection of the bridge deck or beam structure, the surface layer is loose and the pit is damaged under the action of the vehicle load and the infiltrated water.

[0008] 3. Limitation of bridge pavement dead load

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