CN210561587U

CN210561587U - Fair-faced concrete precast block assembled sidewalk

Info

Publication number: CN210561587U
Application number: CN201921073427.9U
Authority: CN
Inventors: 李旭; 孟令月; 刘富强; 李钢
Original assignee: CCCC First Harbor Engineering Co Ltd
Current assignee: CCCC First Harbor Engineering Co Ltd
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-05-19
Anticipated expiration: 2029-07-10

Abstract

The utility model relates to an as-cast finish concrete prefabricated section assembled pavement, by supreme concrete foundation, cement mortar screed-coat, the concrete prefabricated section panel layer of including in proper order down, concrete prefabricated section panel layer includes a plurality of clear water concrete prefabricated sections, and the outer cladding of clear water concrete prefabricated section has the protective paint layer that is used for restraining clear water concrete weathering, degradation, salt damage, has set firmly the reinforcing bar net piece that increases support strength in the clear water concrete prefabricated section, is equipped with polyurethane pointing layer between the adjacent clear water concrete prefabricated section. The utility model discloses an outer coating protection paint layer establishes the bare concrete prefabricated section of reinforcing bar net piece in, as the unit of laying of concrete prefabricated section panel layer, has strengthened the support nature to the pedestrian, has improved the durability, has reduced the harm that production, construction concrete block brought for the environment, has not only reduced the maintenance cost in pavement later stage, has also brought the guarantee for people's safe trip.

Description

Fair-faced concrete precast block assembled sidewalk

Technical Field

The utility model relates to a road construction technical field especially relates to a clear water concrete prefabricated section assembled pavement.

Background

At present, the conventional construction method of the sidewalk is to use whole bricks, permeable bricks, sintered bricks, granite stones and the like to lay the sidewalk, but the construction methods generally have the problems of insufficient support and poor durability, so that the construction methods cause environmental pollution and resource waste in the manufacturing and construction processes, the later maintenance cost of the sidewalk is increased, and a lot of inconvenience is brought to pedestrians.

Disclosure of Invention

The utility model aims at solving the defects of the prior art and provides a clear water concrete precast block assembled sidewalk.

The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:

the utility model provides an as-cast finish concrete prefabricated section assembled pavement, by lower supreme concrete foundation, cement mortar screed-coat, concrete prefabricated section panel layer of including in proper order, concrete prefabricated section panel layer includes a plurality of as-cast finish concrete prefabricated sections, and the outer cladding of as-cast finish concrete prefabricated section has the protective paint layer that is used for restraining as-cast finish concrete morals and manners, degradation, salt damage, has set firmly the reinforcing bar net piece that increases support strength in the as-cast finish concrete prefabricated section, is equipped with polyurethane pointing layer between the adjacent as-cast finish concrete prefabricated section.

Preferably, a motor vehicle lane transition section is arranged on one side, close to the motor vehicle lane, of the sidewalk, the motor vehicle lane transition section sequentially comprises a motor vehicle lane transition section concrete foundation, a motor vehicle lane transition section cement mortar leveling layer and a fair-faced concrete vertical kerb from bottom to top, a part of the motor vehicle lane transition section concrete foundation and a part of the motor vehicle lane transition section cement mortar leveling layer are located under the concrete foundation, the height of the top of the motor vehicle lane transition section cement mortar leveling layer is the same as that of the bottom of the concrete foundation, and the height of the top of the fair-faced concrete vertical kerb is the same as that of the top of the concrete precast block panel layer.

Preferably, a tree pit transition section is arranged on one side, close to the tree pit, of the sidewalk, and the tree pit transition section sequentially comprises a tree pit transition section concrete foundation, a tree pit transition section cement mortar leveling layer and a bare concrete flat curb from bottom to top, the height of the top of the tree pit transition section concrete foundation is the same as that of the bottom of the concrete foundation, and the height of the top of the bare concrete flat curb is the same as that of the top of the concrete precast block panel layer.

The utility model has the advantages that: the utility model discloses an outer coating protection paint layer establishes the bare concrete prefabricated section of reinforcing bar net piece in, as the unit of laying of concrete prefabricated section panel layer, has strengthened the support nature to the pedestrian, has improved the durability, has reduced the harm that production, construction concrete block brought for the environment, has not only reduced the maintenance cost in pavement later stage, has also brought the guarantee for people's safe trip.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a schematic structural view of a bare concrete precast block;

in the figure: 1-a concrete foundation; 2-cement mortar leveling layer; 3-concrete precast block panel layer; 4-polyurethane pointing layer; 5-a vehicle lane transition section; 6-tree pit transition section; 31-bare concrete precast block; 32-a protective lacquer layer; 33-reinforcing mesh; 51-motor vehicle lane transition section concrete foundation; 52-cement mortar leveling layer of the transition section of the motor vehicle lane; 53-bare concrete kerbstone; 61-pit transition section concrete foundation; 62-pit transition section cement mortar leveling layer; 63-fair-faced concrete flat curb;

the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

as shown in the figure, an as-cast finish concrete prefabricated section assembled pavement includes concrete foundation 1, cement mortar screed-coat 2, concrete prefabricated section panel layer 3 from lower supreme in proper order, concrete prefabricated section panel layer 3 includes a plurality of as-cast finish concrete prefabricated sections 31, the outer cladding of as-cast finish concrete prefabricated section 31 has the protective paint layer 32 that is used for restraining the weathering of as-cast finish concrete, the degradation, the salt damage, set firmly reinforcing bar net piece 33 that increases support strength in the as-cast finish concrete prefabricated section 31, be equipped with polyurethane pointing layer 4 between the adjacent as-cast finish concrete prefabricated section 31.

Preferably, a motorway transition section 5 is arranged on one side, close to a motorway, of the sidewalk, the motorway transition section 5 sequentially comprises a motorway transition section concrete foundation 51, a motorway transition section cement mortar leveling layer 52 and a fair-faced concrete vertical kerb 53 from bottom to top, a part of the motorway transition section concrete foundation 51 and the motorway transition section cement mortar leveling layer 52 are located under the concrete foundation 1, the height of the top of the motorway transition section cement mortar leveling layer 52 is the same as that of the bottom of the concrete foundation 1, and the height of the top of the fair-faced concrete vertical kerb 53 is the same as that of the top of the concrete precast block panel layer 3.

Preferably, a pit transition section 6 is arranged on one side, close to the pit, of the sidewalk, the pit transition section 6 sequentially comprises a pit transition section concrete foundation 61, a pit transition section cement mortar leveling layer 62 and a bare concrete flat curb 63 from bottom to top, the height of the top of the pit transition section concrete foundation 61 is the same as that of the bottom of the concrete foundation 1, and the height of the top of the bare concrete flat curb 63 is the same as that of the top of the concrete precast block panel layer 3.

Examples

Firstly, production and construction of the bare concrete precast block 31:

the size of the adopted bare concrete precast block 31 is 75X 50X 10cm, the size of the bare concrete vertical kerbstone 53 is 50X 22X 30cm, and the size of the bare concrete flat kerbstone 63 is 50X 10X 25 cm.

1. Formwork construction

The bare concrete precast block 31 is produced by prefabricating a customized ABS plastic mould, and patterns of a prefabricated panel can be customized in a mould factory in a diversified manner according to needs.

The mold is inspected and accepted after entering a field, the special release agent is uniformly sprayed on the inner surface of the mold, the generation of component bubbles is reduced, the mold can be smoothly released, the mold is removed by adopting cleaning cloth to wash the mold, surface garbage is removed, and the mold is protected to prevent the surface of the mold from being scratched by hard objects.

2. Construction of steel bars

Arrangement in prefabricated blocks of pavement panel

The reinforcing bar net piece 33 to increase the bearing capacity of concrete precast block panel layer 3, reinforcing bar net piece 33 adopts design bed-jig ligature shaping.

3. Concrete pouring construction

Adopt portable platform technology of vibrating to vibrate the shaping, plastic mold places on the shaking table during prefabrication, the reinforcing bar net piece 33 that will ligature has the cushion arranges the mould in, the concrete is transported to prefabricated district by the tank car, directly unloads to moving platform' S feed bin in, adjust hopper switch blowing to the mould in, start the platform of vibrating, the time of vibrating is no less than 30S, until concrete surface turns over the thick liquid, no longer showing and sink and produce the bubble, and adopt wooden trowel and iron trowel to carry out concrete surface and wipe and press, accomplish surfacing.

4. Precast block demoulding maintenance construction

After the initial setting of the concrete, finishing the surface shrinkage, covering the surface of the concrete with geotextile, sprinkling water, keeping the concrete moist, curing, finishing the concrete pouring for about 12 hours, and demoulding. When demoulding, the mould and the concrete block are turned and reversely buckled, and the edge of the mould and the position of the hanging point are uniformly knocked by a rubber hammer, so that the template is separated from the concrete.

And transferring the demoulded finished product to a finished product curing area by using a forklift for centralized curing, and covering the geotextile with water to keep the moist curing for not less than 7 days.

5. Construction for coating protective layer

And after the curing is finished, the concrete original color is protected by using the protective finish paint to form a protective paint layer 32. The coating of the primer and the finish paint can effectively improve the stain resistance, weather resistance and durability of the bare concrete precast block 31 and effectively inhibit the precast block from deterioration, weathering and salt damage caused by the action of ultraviolet rays and acid rain. Meanwhile, the water absorption prevention layers formed by the finish paint and the primer paint supplement each other, so that the firmness and the beauty of the building are kept for a long time.

Secondly, the bare concrete precast block 31 is installed and constructed:

1. surface cleaning treatment and foundation rolling and tamping construction

And (3) dismantling the sidewalk to be reconstructed, and leveling and rolling and compacting the sidewalk base layer after removing organic impurities.

2. Precast block laying construction

Paving 5cm thick dry and hard cement mortar on the pavement base layer compacted by rolling to form a cement mortar leveling layer 2, paving according to the installation sequence of the bare concrete vertical kerbstone 53, the bare concrete precast block 31 and the bare concrete flat kerbstone 63, and ensuring the installation overall line type and the flatness through methods such as a level gauge, a stay wire, a horizontal guiding rule inspection and the like in the construction process.

3. Pointing construction

And after the bare concrete precast block 31 is paved, the gap is sealed by using high-modulus polyurethane sealant to form a polyurethane joint pointing layer 4.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements made by the method concept and technical solution of the present invention or directly applied to other occasions without improvement are all within the protection scope of the present invention.

Claims

1. The utility model provides an as-cast finish concrete prefabricated section assembled pavement, by supreme concrete foundation (1) of including in proper order down, cement mortar screed-coat (2), concrete prefabricated section panel layer (3), a serial communication port, concrete prefabricated section panel layer (3) include a plurality of as-cast finish concrete prefabricated sections (31), the outer cladding of as-cast finish concrete prefabricated section (31) has and is used for restraining the protective paint layer (32) of as-cast finish concrete weathering, the degradation, the salt damage, reinforcing bar net piece (33) that increase support strength have set firmly in as-cast finish concrete prefabricated section (31), be equipped with polyurethane pointing layer (4) between adjacent as-cast finish concrete prefabricated section (31).

2. The bare concrete precast block assembled sidewalk according to claim 1, wherein a motorway transition section (5) is arranged on one side of the sidewalk close to a motorway, the motorway transition section (5) sequentially comprises a motorway transition section concrete foundation (51), a motorway transition section cement mortar leveling layer (52) and a bare concrete curb (53) from bottom to top, a part of the motorway transition section concrete foundation (51) and the motorway transition section cement mortar leveling layer (52) are positioned under the concrete foundation (1), the top height of the motorway transition section cement mortar leveling layer (52) is the same as the bottom height of the concrete foundation (1), and the top height of the bare concrete curb (53) is the same as the top height of the concrete precast block panel layer (3).

3. The bare concrete precast block assembled sidewalk according to claim 1, wherein a tree pit transition section (6) is arranged on one side of the sidewalk close to a tree pit, the tree pit transition section (6) sequentially comprises a tree pit transition section concrete foundation (61), a tree pit transition section cement mortar leveling layer (62) and a bare concrete flat curb (63) from bottom to top, the top height of the tree pit transition section concrete foundation (61) is the same as the bottom height of the concrete foundation (1), and the top height of the bare concrete flat curb (63) is the same as the top height of the concrete precast block panel layer (3).