Reservation and replacement of cast-in-place curb stones on asphalt concrete pavement and its construction method

Abstract

The invention relates to cast-in-place kerbstone for reserved replacement of an asphalt concrete pavement. The cast-in-place kerbstone comprises a reserved groove mold, a gravel dense screen bag, a lightweight rib separating block, a cast-in-place slip form system, the cast-in-place kerbstone and the asphalt concrete pavement. A cement stabilized macadam foundation is arranged on a subbase course,wherein a kerbstone indwelled groove is excavated on the cement stabilized macadam foundation by a separator kerbstone mould; in addition, a indwelled groove mold is arranged in the kerbstone indwelled groove; the lightweight rib separating block and the gravel dense screen bag are arranged in the indwelled groove mold; the cement stabilized macadam foundation is sequentially provided with a coarse-grained asphalt concrete layer and a fine-grained asphalt concrete layer from bottom to top. According to the cast-in-place kerbstone for the reserved replacement of the asphalt concrete pavement,disclosed by the invention, by adopting slip-form construction for the kerbstone, the construction method has the advantages of high construction speed, less required labor and no prefabricated site;the paved kerbstone has high integral structural strength and smooth and beautiful linetype.

Description

technical field [0001] The invention belongs to the technical field of municipal engineering, and in particular relates to a reserved and replaced cast-in-place curb stone for asphalt concrete pavement and a construction method. Background technique [0002] With the rapid development of high-grade highways in my country, the development of curbstones is also undergoing major changes; at present, there are two conventional construction methods for the construction of curbstone concrete in asphalt concrete pavement separation belts: the first construction method is to carry out the whole cement stabilized crushing first. The paving and rolling of the stone base is followed by paving and rolling of asphalt concrete on the pavement. Finally, the cement stabilized gravel base and road asphalt concrete that have been rolled at the curb base of the separation belt are excavated, and the curb concrete is poured. The second construction method is to pre-embed the prefabricated separat...

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Problems solved by technology

[0003] There are certain problems in the above two construction methods: first, the excavated cement-stabilized macadam base and pavement asphalt concrete that have been rolled and compacted cannot be reused, which increases the project cost and increases the construction cost; the second, During the rolling process of cement-stabilized macadam base and pavement asphalt concrete pavement, the prefabricated curbstones of the separation strip cannot be accurately positioned, and the rolling quality of the junction between the curbstones of the separation strip and the cement-stabilized macadam base and pavement asphalt concrete cannot be guaranteed

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