CN213597230U - Mounting structure of concrete ground prefabricated expansion joint - Google Patents
Mounting structure of concrete ground prefabricated expansion joint Download PDFInfo
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- CN213597230U CN213597230U CN202021998645.6U CN202021998645U CN213597230U CN 213597230 U CN213597230 U CN 213597230U CN 202021998645 U CN202021998645 U CN 202021998645U CN 213597230 U CN213597230 U CN 213597230U
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Abstract
The utility model provides a mounting structure of prefabricated expansion joint of concrete ground, including the basic unit, be equipped with branch storehouse seam in the basic unit, it has the mounting groove to open along dividing the storehouse seam in the basic unit, and the mounting groove width extends to both sides for using branch storehouse seam as the center, by bottom surface treatment layer, viscose layer, prefabricated expansion joint and surface treatment layer up being equipped with in the mounting groove, the width of mounting groove is greater than the width at prefabricated expansion joint. This technique adopts prefabricated expansion joint, can choose for use high strength material, has elastic polyurethane grout material in fact, forms one and guarantees to give the expend with heat and contract with cold space of concrete, guarantees simultaneously that the seam both sides do not have the difference in height, has waterproof function to have high strength, high resistant chemical corrosion's advantage, after the installation, can be in surface coating terrace coating system or direct naked use.
Description
Technical Field
The utility model relates to a mounting structure of prefabricated expansion joint of concrete floor.
Background
Because the terrace concrete is not poured once, the compartment gap is inevitably generated; in addition, if the building is a building with a large single body area, structural expansion joints can be formed. No matter the expansion joint is structural or the compartment separation joint, concrete on two sides of the joint is independent, and certain height difference inevitably exists. When the ground is required to bear high mechanical load, such as some machining workshops and logistics warehouses, and is required to bear frequent load forking, the rolling of vehicles causes huge stress difference on two sides of concrete, and the superposition of the stress difference and the height difference factors easily causes the concrete on two sides of a seam to be damaged, so that a wider crack is formed, and the safety and the attractiveness are affected. And if this building is multilayer structure, the waterproof problem can't be solved owing to there is the through joint in the structural expansion joint department on second floor and above.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of above-mentioned prior art, provide a mounting structure at prefabricated expansion joint in concrete ground, guarantee that the seam both sides do not have the difference in height, have waterproof, high strength, high resistant chemical corrosion's advantage.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a mounting structure at prefabricated expansion joint of concrete ground, includes the basic unit, is equipped with branch storehouse seam on the basic unit, it has the mounting groove to open along dividing the storehouse seam in the basic unit, and the mounting groove width is for using branch storehouse seam to extend to both sides as the center, by bottom surface treatment layer, viscose layer, prefabricated expansion joint and surface treatment layer up being equipped with in the mounting groove, the width of mounting groove is greater than the width at prefabricated expansion joint.
Furthermore, the bin dividing seam is filled with a foam lining strip, the width of the foam lining strip is larger than that of the bin dividing seam, and the foam lining strip is extruded into the bin dividing seam.
Furthermore, a waterproof bandage is arranged between the bottom surface treatment layer and the adhesive layer, fiber layers are arranged on two sides of the waterproof bandage, and parts of the fiber layers are fixed on two sides of the bin dividing seam.
Furthermore, a bending part which is concave to the bin dividing seam is arranged at the position of the waterproof bandage above the bin dividing seam.
Furthermore, an S-shaped connecting part is arranged in the middle of the prefabricated expansion joint and is made of elastic materials. The elastic material can be rubber or other elastic material. The prefabricated expansion joint adopts vinyl resin.
Furthermore, the space of the lower part and the two side edges of the prefabricated expansion joint in the installation groove is filled with the adhesive layer.
The utility model has the advantages that: this technique adopts prefabricated expansion joint, can choose for use high strength material, has elastic polyurethane grout material in fact, forms one and guarantees to give the expend with heat and contract with cold space of concrete, guarantees simultaneously that the seam both sides do not have the difference in height, has waterproof function to have high strength, high resistant chemical corrosion's advantage, after the installation, can be in surface coating terrace coating system or direct naked use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic cross-sectional structure of the present invention;
fig. 2 is a schematic structural view of a prefabricated expansion joint and an intermediate connecting part thereof.
Shown in the figure: 1. the base layer, 2, mounting groove, 3, bottom surface treatment layer, 4, viscose layer, 5, prefabricated expansion joint, 6, surface treatment layer, 7, foam filler strip, 8, waterproof bandage, 9, flexion, 10, connecting portion, 11, branch storehouse seam.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the installation structure for the prefabricated expansion joint on the concrete ground comprises a concrete base layer 1, a branch bin slot 11 is formed in the base layer 1, an installation groove 22 is formed in the base layer 1 along the branch bin slot 11, the width of the installation groove 2 extends towards two sides by taking the branch bin slot 11 as a center, a bottom surface treatment layer 3, an adhesive layer 4, a prefabricated expansion joint 5 and a surface treatment layer 6 are arranged in the installation groove 2 from bottom to top, and the width of the installation groove 2 is greater than the width of the prefabricated expansion joint 5. The bin dividing seam 11 is filled with the foam lining strip 7, the width of the foam lining strip 7 is larger than that of the bin dividing seam 11, and the foam lining strip 7 is extruded into the bin dividing seam 11. When the floor is installed with waterproof requirement, a waterproof bandage 8 is arranged between the bottom surface treatment layer and the adhesive layer, fiber layers are arranged on two sides of the waterproof bandage 8, and parts of the fiber layers are fixed on two sides of the warehouse dividing seam. The waterproof bandage 8 is provided with a bending part 9 which is concave to the bin dividing seam 11 at the position above the bin dividing seam. An S-shaped connecting part 10 is arranged in the middle of the prefabricated expansion joint 5, and the connecting part 10 is made of elastic materials. The elastic material can be rubber or other elastic material. The prefabricated expansion joint 5 adopts vinyl resin. The space at the lower part and two side edges of the prefabricated expansion joint 5 in the mounting groove 2 is filled with the adhesive layer 4.
The construction method comprises the following steps:
the mounting groove 2 is based on the central point of the branch bin gap 11, elastic lines are arranged on two sides of the branch bin gap 11 according to the distance of half the width of the prefabricated expansion joint 5 plus 10mm, parts in the two lines are cut to the depth of 30-40mm at intervals of 20-30mm by a grooving machine, and then concrete in the cutting range is chiseled by an electric pick to form the mounting groove 2. The base surface at the bottom of the installation groove 2 is ground substantially flat, and all the chiseled concrete is removed to form a bottom surface treatment layer 3. Put into mounting groove 2 pilot scale with prefabricated expansion joint 5 and put, ensure that prefabricated expansion joint 5 can easily put into mounting groove 2, the degree of depth of mounting groove 2 is greater than prefabricated expansion joint 5's thickness.
Foam lining strip 7: the bin dividing seam 11 is cut straight and to the width of at least 6mm by a cutting machine, and the foam lining strip 7 with the diameter of 1-2mm slightly larger than the width of the bin dividing seam 11 is embedded into the bin dividing seam 11, so that the elastic polyurethane glue of the glue layer 4 is prevented from permeating into the bin dividing seam 11 to cause sealing and being incapable of releasing stress.
Waterproof bandage 8: the waterproof bandage is used in places with waterproof requirements, the compartment seam 11 is cut straight and to the width of at least 6mm by a cutting machine, and the positions of two sides of the waterproof bandage 8 with fiber layers are fixed on two sides of the compartment seam 11 by two-component solvent-free elastic polyurethane adhesive. The waterproof bandage 8 can prevent water from leaking to the lower part when water exists on the surface in the future. One component of the two-component solvent-free elastic polyurethane adhesive is modified castor oil or polyol, the other component is modified MDI, after complete curing, the Shore hardness (A) is 80-95, the elongation at break is 50-100%, and the bonding strength with concrete is more than 2 MPa. The waterproof bandage 8 is made of modified polytetrafluoroethylene resin, the breaking elongation rate is more than 300%, the front side and the back side of the two sides of the waterproof bandage 8 are both adhered with fiber layers, and the waterproof bandage 8 and polyurethane adhesive are guaranteed to be well adhered.
Adhesive layer 4: the position for placing the foam lining strip is well pasted by using an adhesive tape in advance, if a waterproof bandage 8 exists, glue is only coated on fiber layers on two sides of the waterproof bandage 8 in a scraping mode, glue cannot be scraped in the middle of the waterproof bandage 8, solvent-free epoxy glue is fully scraped by using a toothed scraper, the glue is coated on the surface of concrete in a scraping mode and the back of the prefabricated expansion joint 5, and the glue is not scraped in the middle of the prefabricated expansion joint 5 corresponding to the positions in the middle of the foam lining strip 7 and the waterproof bandage 8. And after the glue is scraped, the adhesive tape is torn off immediately, and the position of the foam lining strip is ensured to be free of the glue. The glue is semisolid formed by mixing two-component solvent-free epoxy resin with quartz powder, fumed silica and bentonite, and has good bonding force, strength and toughness. The bonding strength with concrete is more than 2MPa, the compressive strength is more than 60MPa, and the breaking strength is more than 20 MPa.
Prefabricating an expansion joint 5: when the adhesive layer 4 is still in a wet and uncured stage, the prefabricated expansion joint 5 is placed in the mounting groove 1, the horizontal ruler is used for measuring to ensure that the prefabricated expansion joint 5 is horizontally placed in the mounting groove 1, the plane of the prefabricated expansion joint 5 is flush with the ground of the concrete base layers 1 on the two sides or slightly higher by 2-3mm, and a rubber hammer is used for hammering to ensure that no empty drum exists between the prefabricated expansion joint 5 and the adhesive layer 4. And (4) removing the redundant glue on the two sides of the prefabricated expansion joint 5, and filling the gap between the prefabricated expansion joint 5 and the side wall of the mounting groove 2 with glue if the glue is insufficient. The prefabricated expansion joint 5 is made of epoxy vinyl materials, an S-shaped connecting part 10 is arranged in the middle of the prefabricated expansion joint for releasing the power, the thickness of the prefabricated expansion joint is 200 mm or 250mm, the compression strength is greater than 60MPa, and the breaking strength is greater than 20 MPa.
And a surface treatment layer 6, namely solidifying the adhesive layer 4, and after the prefabricated expansion joint 5 is firmly bonded, enabling the prefabricated expansion joint 5 and the surface of the concrete base layer 1 to be positioned on the same plane in a polishing mode by using diamond and resin membranes. After the surface treatment layer is finished, any resin coating system can be made on the surface.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a mounting structure at prefabricated expansion joint of concrete ground, includes the basic unit, is equipped with branch storehouse seam, its characterized in that on the basic unit: the last edge of basic unit is sewed up along dividing the storehouse and is had the mounting groove, and the mounting groove width is for using dividing the storehouse seam to extend to both sides as the center, by last bottom surface treatment layer, viscose layer, prefabricated expansion joint and the surface treatment layer of being equipped with down in the mounting groove, the width of mounting groove is greater than the width at prefabricated expansion joint.
2. The installation structure of the prefabricated expansion joint of concrete ground according to claim 1, characterized in that: the bin dividing seam is filled with a foam lining strip, the width of the foam lining strip is larger than that of the bin dividing seam, and the foam lining strip is extruded into the bin dividing seam.
3. The installation structure of the prefabricated expansion joint of concrete ground according to claim 1, characterized in that: a waterproof bandage is arranged between the bottom surface treatment layer and the adhesive layer, fiber layers are arranged on two sides of the waterproof bandage, and parts of the fiber layers are fixed on two sides of the sub-bin seam.
4. The installation structure of the prefabricated expansion joint of concrete ground according to claim 3, characterized in that: the waterproof bandage is provided with a bending part which is concave into the compartment dividing seam at the position above the compartment dividing seam.
5. The installation structure of the prefabricated expansion joint of concrete ground according to claim 1, characterized in that: and an S-shaped connecting part is arranged in the middle of the prefabricated expansion joint and is made of elastic material.
6. The installation structure of the precast expansion joint of the concrete floor according to claim 1 or 3, wherein: and the adhesive layer fills the spaces at the lower part and two side edges of the prefabricated expansion joint in the mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021998645.6U CN213597230U (en) | 2020-09-14 | 2020-09-14 | Mounting structure of concrete ground prefabricated expansion joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021998645.6U CN213597230U (en) | 2020-09-14 | 2020-09-14 | Mounting structure of concrete ground prefabricated expansion joint |
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| CN213597230U true CN213597230U (en) | 2021-07-02 |
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| CN202021998645.6U Active CN213597230U (en) | 2020-09-14 | 2020-09-14 | Mounting structure of concrete ground prefabricated expansion joint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382234A (en) * | 2022-01-19 | 2022-04-22 | 中建六局土木工程有限公司 | Construction method of foam concrete roof |
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2020
- 2020-09-14 CN CN202021998645.6U patent/CN213597230U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382234A (en) * | 2022-01-19 | 2022-04-22 | 中建六局土木工程有限公司 | Construction method of foam concrete roof |
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