Cement concrete pavement Y-shaped joint cutting device and cut joint filling and sealing process

Abstract

The invention discloses a cement concrete pavement Y-shaped joint cutting device and a cut joint filling and sealing process. The device comprises a rack, wherein a travelling mechanism, a cutting mechanism and a cooling mechanism are arranged on the rack. The process is characterized that filling and sealing are carried out by adopting three layers of joint sealants, wherein the middle joint sealants are rubber strips. The device and the process have the following positive effects that wide and narrow joints are cut once by adopting double blades for cutting, thus improving the production efficiency and saving the production cost; and the device has good self-motion property and mobility and has the advantages of simple structure, good joint cutting effect, low pavement destructiveness, high joint cutting efficiency, strong mobility, simple construction process and long service life after construction.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and particularly relates to a cement concrete pavement slitting machine with simple structure, good slitting effect, little damage to the road surface, high slitting efficiency and strong maneuverability, simple construction technology, and easy to use after construction. Y-shaped slit device for cement concrete pavement with long service life and slit potting process. Background technique [0002] The cement concrete pavement has a band structure with a relatively large area. Due to the physical characteristics of cement concrete thermal expansion and contraction, the cement concrete pavement will inevitably produce irregular cracks. In order to prevent the generation of cement concrete pavement, shrinkage joints and expansion joints must be set on the cement concrete pavement during construction, and construction joints must also be set at the same time. The "Code for Design of Highwa...

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Problems solved by technology

For example, the longitudinal shrinkage joints should be cut to 1 / 3-2 / 5 of the thickness of the slab, the thickness of the cement concrete pavement is generally about 240mm, and the depth of the joints to be cut is 80-100mm. construction cost;

[0004] 2) Most of the existing cement concrete pavement crack cutting machines are hand-push type, so the labor intensity of the operators is very high, and it is difficult to ensure the straightness and smoothness of the cracks obtained by cutting, and the existing cement concrete pavement crack cutting machines When in use, they are passively sprinkled with water for cooling by their own weight, which has poor cooling effect and short service life of the blades;

[0005] 3) The sealing effect of the slits potted by the existing slit potting process is poor, and the service life is short. The existing slits with the same width up and down use a large amount of sealing material, so the shrinkage is also large

Water is easy to enter after shrinking in winter, and it is easy to be damaged after repeated freezing and surge. The service life is very short. It is often necessary to repair the cuts repeatedly, and the cement concrete pavement is easily damaged by water entering the cuts, thereby reducing the service life of the pavement. , wasting public resources;

[0006] 4) Poor driving comfort: after potting, it is difficult to keep straight with the cement pavement. Because the potting of the existing potting process is not elastic, the driving will be seriously bumped after potting, resulting in driving comfort. poor

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