Structure and method for repairing cracks of oblique prestressed cement concrete pavement

Abstract

The invention relates to a technology for repairing cracks of an oblique prestressed cement concrete pavement, and discloses a structure and a method for repairing cracks of an oblique prestressed cement concrete pavement. The oblique prestressed cement concrete pavement comprises a prestressed reinforcement and a sliding layer, and is characterized in that the upper part of the prestressed reinforcement is provided with a cracking groove formed along the crack, the bottom of the cracking groove is provided with a plurality of drill holes communicated with the sliding layer at intervals along the crack, the cracking groove is internally provided with a horizontal reinforcement cage, each drill hole is internally provided with a vertical reinforcement cage, and the cracking groove and the drill holes are internally filled with a shrinking-free grouting material. The method comprises the following steps of: drilling in a cracking way, previously grouting and grouting by means of rebar binding, so that the transverse cracks generated on the oblique prestressed cement concrete pavement can be quickly repaired; and therefore, the method is simple and high in reliability.

Description

technical field [0001] The invention relates to a technology for repairing cracks in cement concrete pavements, in particular to a structure and method for repairing cracks in obliquely prestressed cement concrete pavements. Background technique [0002] In recent years, with the development of transportation, under the circumstances of heavy-duty traffic and high asphalt prices, the new application research of cement pavement has entered a new stage. Cement concrete pavement has unique advantages, such as high strength, good stability, and long service life. However, there are a large number of expansion joints on the pavement, which often cause diseases such as crushing, arching, misalignment, and mud pumping; at the same time, a large number of Large expansion joints will also increase road noise and affect driving comfort. Prestressed concrete pavement can use few transverse joints to achieve surface smoothness and eliminate cracks. [0003] Prestressed concrete paveme...

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Problems solved by technology

[0005] However, because the oblique prestressed cement concrete pavement has a long concrete slab, under temperature changes, the frictional stress on the bottom of the concrete slab may cause cracks on the pavement, and the cracks are prone to spalling, and water enters from the cracks, resulting in damage to the pavement base. resulting in damage to the pavement structure

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