CN203383409U - Caulking construction structure for surface layer dividing joints of building roof - Google Patents
Caulking construction structure for surface layer dividing joints of building roof Download PDFInfo
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- CN203383409U CN203383409U CN201320465411.9U CN201320465411U CN203383409U CN 203383409 U CN203383409 U CN 203383409U CN 201320465411 U CN201320465411 U CN 201320465411U CN 203383409 U CN203383409 U CN 203383409U
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- dividing joint
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Abstract
The utility model discloses a caulking construction structure for surface layer dividing joints of a building roof. The caulking construction structure comprises elastic bars and sealing layers, wherein the roof dividing joints are tightly filled with the elastic bars, the dividing joints of the surface layer are arranged on a rigid protection layer of the building roof, the sealing layers are distributed on the upper portions of the elastic bars, the elastic bars and the sealing layers are distributed from front to back in the extending direction of the roof dividing joints, the width of each elastic bar is not smaller than d1 which is equal to 1.2*d2, d2 is the width of a roof dividing joint, and the upper surface of each sealing layer is in a concave-arc shape. The rigid protection layer of the building roof can be a cement mortar protection layer, or a fine aggregate concrete protection layer, or a third rigid protection layer with the upper portion paved with face bricks. The caulking construction structure is reasonable in structure design, convenient to construct, high in work efficiency, and attractive in appearance of formed dividing joint after construction, construction quality can be easily guaranteed, the cracking phenomenon can not easily occur, and the problems that construction operation is arbitrary and irregular, the thicknesses of caulked joints are not uniform, rubber face quality is difficult to control, rubber faces easily crack, and the appearance is not attractive in existing caulking construction of dividing joints are solved.
Description
Technical field
The utility model belongs to building roof surface layer dividing joint construction field, especially relates to a kind of building roof surface layer dividing joint filleting constructing structure.
Background technology
The building roof surface layer refers to the part that the roofing construction sheet face is above, comprises roofing leveling layer, insulation layer, waterproofing course, rigid course and finish coat.Dividing joint, in order to reduce crack, stays in advance the seam of establishing on roofing leveling layer, rigid waterproof layer and rigid course, and rigid course only makes V-shaped groove from the teeth outwards, is called surperficial dividing joint.The dividing joint of some is set, the area of monolithic layer of concrete can be reduced, thereby reduce it because of flexible and buckling deformation, can effectively prevent and limit the generation in crack.Nowadays, building roof surface layer dividing joint filleting construction neither one is unified, standard and concrete job practices can be followed, thus inevitably have that constructing operation is more random, lack of standardization during practice of construction, filleting thickness disunity, glue face difficult quality is controlled and easy to crack, the problems such as outside is not attractive in appearance.Thereby, nowadays needing a kind of simple in structure, reasonable in design and constructing operation is easy, construction effect is good building roof surface layer dividing joint filleting constructing structure, the building roof surface layer dividing joint caulking quality of having constructed is good, and is not prone to cracking phenomena.
The utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of building roof surface layer dividing joint filleting constructing structure is provided, its reasonable in design, easy construction, work efficiency is high and dividing joint filleting good looking appearance, the construction quality of construction molding are easy to guarantee, is not prone to cracking phenomena.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of building roof surface layer dividing joint filleting constructing structure, it is characterized in that: comprise the closely knit sealant that is filled in the elastic strip in roofing dividing joint set on constructed roofing rigid course and is laid in described elastic strip top, described elastic strip and sealant are all laid from front to back along the bearing of trend of described roofing dividing joint; The width of described elastic strip is not less than d1, d1=1.2 * d2 wherein, and the seam that d2 is described roofing dividing joint is wide; The upper surface of described sealant is shaped as arcs of recesses; Institute's construction roofing rigid course is the rigid course three that cement mortar protective course, pea gravel concreten topping or top are affixed with face brick, and described roofing dividing joint is to be laid in roofing dividing joint one on cement mortar protective course, to be laid in the roofing dividing joint two on the pea gravel concreten topping or to be laid in the roofing dividing joint three on rigid course three; The closely knit elastic strip upper surface be filled in described roofing dividing joint one is not less than 10mm with the spacing between the cement mortar protective course upper surface, closely knitly is filled in the interior elastic strip upper surface of described roofing dividing joint two and the spacing between the pea gravel concreten topping is not less than 10mm; The closely knit elastic strip upper surface be filled in described roofing dividing joint three is mutually concordant with the upper surface of rigid course three.
Above-mentioned building roof surface layer dividing joint filleting constructing structure; it is characterized in that: closely knit elastic strip upper surface and the spacing between the cement mortar protective course upper surface be filled in described roofing dividing joint one is 10mm～15mm, and closely knit elastic strip upper surface and the spacing between the pea gravel concreten topping be filled in described roofing dividing joint two is 10mm～15mm.
Above-mentioned building roof surface layer dividing joint filleting constructing structure, it is characterized in that: described sealant is rubber fillet, the sealing joint strip formed by the weather proofing sealant of brushing on elastic strip top or the polyurethane cement sealant that formed by the polyurethane cement of brushing on elastic strip top, and the left and right sides wall of described rubber fillet is pasted and fixed on respectively on the left and right sides slotted wall of described roofing dividing joint.
Above-mentioned building roof surface layer dividing joint filleting constructing structure, it is characterized in that: the top, two ends, left and right of described sealant is positioned at the upper surface below of cement mortar protective course, and the top, two ends, left and right of described sealant and the spacing between the cement mortar protective course upper surface are 2mm ± 1mm; The top, two ends, left and right of described sealant is positioned at the upper surface below of pea gravel concreten topping, and the spacing between the top, two ends, left and right of described sealant and pea gravel concreten topping upper surface is 2mm ± 1mm; The top, two ends, left and right of described sealant is positioned at the upper surface below of institute's paving face brick on rigid course three, and the spacing on the top, two ends, left and right of described sealant and rigid course three between institute's paving face brick upper surface is 2mm ± 1mm.
Above-mentioned building roof surface layer dividing joint filleting constructing structure, it is characterized in that: described elastic strip is foam rods.
Above-mentioned building roof surface layer dividing joint filleting constructing structure; it is characterized in that: the spacing between described sealant middle part and cement mortar protective course upper surface is 5mm ± 1m; spacing between described sealant middle part and pea gravel concreten topping upper surface is 5mm ± 1mm, and on described sealant middle part and rigid course three, the spacing between institute's paving face brick upper surface is 5mm ± 1mm.
Above-mentioned building roof surface layer dividing joint filleting constructing structure, it is characterized in that: the width of described rubber fillet is than the large 2mm of the width of described roofing dividing joint.
Above-mentioned building roof surface layer dividing joint filleting constructing structure, it is characterized in that: the interior thickness of described sealing joint strip is 5mm～6mm, and the interior thickness of described polyurethane cement sealant is 9mm～12mm.
The utility model compared with prior art has the following advantages:
1, simple in structure and reasonable in design, drop into construction cost lower, construction equipment used is few.
2, job practices simple, operate simple and easy and realize convenient.
3, work efficiency is high, construction quality is easy to guarantee and construction effect is good, and the building roof surface layer dividing joint caulking quality of having constructed is good, good looking appearance, and be not prone to cracking phenomena.
In sum, the utility model reasonable in design, easy construction, work efficiency is high and dividing joint filleting good looking appearance, the construction quality of construction molding are easy to guarantee, is not prone to cracking phenomena.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model embodiment 1.
The structural representation that Fig. 2 is the utility model embodiment 2.
The structural representation that Fig. 3 is the utility model embodiment 3.
Description of reference numerals:
1-elastic strip; 2-sealant; 3-1-cement mortar protective course;
3-2-pea gravel concreten topping; 3-3-rigid course three;
4-face brick; 5-mortar bed.
The specific embodiment
Embodiment 1
As shown in Figure 1; the utility model comprises the closely knit sealant 2 that is filled in the elastic strip 1 in roofing dividing joint set on constructed roofing rigid course and is laid in described elastic strip 1 top, and described elastic strip 1 and sealant 2 are all laid from front to back along the bearing of trend of described roofing dividing joint.The width of described elastic strip 1 is not less than d1, d1=1.2 * d2 wherein, and the seam that d2 is described roofing dividing joint is wide.The upper surface of described sealant 2 is shaped as arcs of recesses.
In the present embodiment; institute's construction roofing rigid course is cement mortar protective course 3-1; and described roofing dividing joint is the roofing dividing joint one be laid on cement mortar protective course 3-1, closely knitly be filled in elastic strip 1 upper surface in described roofing dividing joint one and the spacing between cement mortar protective course 3-1 upper surface is not less than 10mm.
In the present embodiment, the seam of described roofing dividing joint one is wide is 20mm.
In the present embodiment, closely knitly be filled in elastic strip 1 upper surface in described roofing dividing joint one and the spacing between cement mortar protective course 3-1 upper surface is 10mm～15mm.
During practice of construction, can according to specific needs, the spacing between elastic strip 1 upper surface and cement mortar protective course 3-1 upper surface be adjusted accordingly.
The top, two ends, left and right of described sealant 2 is positioned at the upper surface below of cement mortar protective course 3-1, and the spacing between the top, two ends, left and right of described sealant 2 and cement mortar protective course 3-1 upper surface is 2mm ± 1mm.In the present embodiment, the spacing between the top, two ends, left and right of described sealant 2 and cement mortar protective course 3-1 upper surface is 2mm.
During practice of construction, the spacing between described sealant 2 middle parts and cement mortar protective course 3-1 upper surface is 5mm ± 1m.In the present embodiment, the spacing between described sealant 2 middle parts and cement mortar protective course 3-1 upper surface is 5mm.
In the present embodiment, described elastic strip 1 is foam rods, and described foam rods is specially the polyethylene foams rod.During practice of construction, described elastic strip 1 also can adopt the elastomeric material of other type.
In the present embodiment, described sealant 2 is rubber fillet, the sealing joint strip formed by the weather proofing sealant of brushing on elastic strip 1 top or the polyurethane cement sealant that formed by the polyurethane cement of brushing on elastic strip 1 top, and the left and right sides wall of described rubber fillet is pasted and fixed on respectively on the left and right sides slotted wall of described roofing dividing joint.
During practice of construction, the foreign material in the described roofing dividing joint seam of first wire brushing, then rinse well with pressure (hydraulic) water, dry up slot with hair-dryer subsequently; Then, fill out the described foam rods of embedding, and real with rubber tire jam-packed plug, make surface flatten; Finally, lay rubber fillet, brushing weather proofing sealant then on described foam rods and form sealing joint strip or brushing polyurethane cement form the polyurethane cement sealant.
In the present embodiment, the width of described rubber fillet is than the large 2mm of the width of described roofing dividing joint.The interior thickness of described sealing joint strip is 5mm～6mm, and the interior thickness of described polyurethane cement sealant is 9mm～12mm.
When brushing weather proofing sealant on described foam rods and while forming sealing joint strip, first at the slot both sides of described roofing dividing joint T-me line paper (dividing colour band), prevent from polluting surface layer, and on the slotted wall of described roofing dividing joint brushing base treatment agent and after its surface drying, evenly clamp-on in seam with glue small of the stock weather proofing sealant, then smooth out with the fingers light, Shunping County with special tool or with finger-dipping water.Right-angled intersection place of the sealing joint strip that forms accomplishes to form " X " shape.Make after glue completes and take off a score colour band, cut out and cut the excessive glue in cleaning brickwork joint place.
When brushing polyurethane cement on described foam rods and while forming the polyurethane cement sealant, first sand is sieved and dry the processing after, again the polyurethane water-proof paint stirred is added mix 2min～3min in sand to form polyurethane cement, and the weight proportion of polyurethane cement (being the weight proportion between polyurethane water-proof paint and sand) is 3 ︰ 7.Before filleting, paste a minute colour band in the slot both sides of described roofing dividing joint and prevent from polluting surface layer, even polyurethane of scumbling on the slotted wall of described roofing dividing joint afterwards, after surface drying, filleting is embedded to slot with polyurethane cement and a little more than the surface of described roofing dividing joint, smear densification in fact with caulking tool along a direction subsequently, make surface pressing, press polish; After the surface layer initial set of polyurethane cement sealant, brush the polyurethane coating closed protective one; Then, take off minute coloured paper, cut out to cut to clear up and overflow mortar.
When described sealant 2 is the rubber fillet, after with brush, special-purpose adhesive evenly being brushed to the slotted wall of described roofing dividing joint, with pinch roller, the rubber fillet is pressed in slot it is connected with slotted wall closely, the cross junction of described rubber fillet answers 45 ° of sanctions to cut splicing.
As shown in Figure 2; in the present embodiment; as different from Example 1: institute's construction roofing rigid course is pea gravel concreten topping 3-2; and described roofing dividing joint is the roofing dividing joint two be laid on pea gravel concreten topping 3-2, closely knitly be filled in elastic strip 1 upper surface in described roofing dividing joint two and the spacing between pea gravel concreten topping 3-2 is not less than 10mm.
In the present embodiment, closely knitly be filled in elastic strip 1 upper surface in described roofing dividing joint two and the spacing between pea gravel concreten topping 3-2 is 10mm～15mm.
During practice of construction; the top, two ends, left and right of described sealant 2 is positioned at the upper surface below of pea gravel concreten topping 3-2; spacing between the top, two ends, left and right of described sealant 2 and pea gravel concreten topping 3-2 upper surface is 2mm ± 1mm, and the spacing between described sealant 2 middle parts and pea gravel concreten topping 3-2 upper surface is 5mm ± 1mm.In the present embodiment, the spacing between the top, two ends, left and right of described sealant 2 and pea gravel concreten topping 3-2 upper surface is 2mm, and the spacing between described sealant 2 middle parts and pea gravel concreten topping 3-2 upper surface is 5mm.
In the present embodiment, the structure of remainder and job practices are all identical with embodiment 1.
Embodiment 3
As shown in Figure 3, in the present embodiment, as different from Example 1: institute's construction roofing rigid course is rigid course three 3-3 that top is affixed with face brick 4, and described roofing dividing joint is the roofing dividing joint three be laid on rigid course three 3-3.Closely knitly be filled in elastic strip 1 upper surface in described roofing dividing joint three and the spacing between pea gravel concreten topping 3-2 is not less than 10mm.Closely knit elastic strip 1 upper surface be filled in described roofing dividing joint three is mutually concordant with the upper surface of rigid course three 3-3.
During practice of construction; the top, two ends, left and right of described sealant 2 is positioned at the upper surface below of institute's paving face brick 4 on rigid course three 3-3, and the spacing on the top, two ends, left and right of described sealant 2 and rigid course three 3-3 between institute's paving face brick 4 upper surfaces is 2mm ± 1mm.Spacing on described sealant 2 middle parts and rigid course three 3-3 between institute's paving face brick 4 upper surfaces is 5mm ± 1mm.In the present embodiment; spacing on the top, two ends, left and right of described sealant 2 and rigid course three 3-3 between institute's paving face brick 4 upper surfaces is 2mm, and the spacing on described sealant 2 middle parts and rigid course three 3-3 between institute's paving face brick 4 upper surfaces is 5mm.Be provided with mortar bed 5 between described face brick 4 and rigid course three 3-3.
In the present embodiment, the structure of remainder and job practices are all identical with embodiment 1.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification of above embodiment being done according to the utility model technical spirit, change and equivalent structure change, and all still belong in the protection domain of technical solutions of the utility model.
Claims (8)
1. a building roof surface layer dividing joint filleting constructing structure, it is characterized in that: comprise the closely knit sealant (2) that is filled in the elastic strip (1) in roofing dividing joint set on constructed roofing rigid course and is laid in described elastic strip (1) top, described elastic strip (1) and sealant (2) are all laid from front to back along the bearing of trend of described roofing dividing joint; The width of described elastic strip (1) is not less than d1, d1=1.2 * d2 wherein, and the seam that d2 is described roofing dividing joint is wide; The upper surface of described sealant (2) is shaped as arcs of recesses; Institute's construction roofing rigid course is the rigid course three (3-3) that cement mortar protective course (3-1), pea gravel concreten topping (3-2) or top are affixed with face brick (4), and described roofing dividing joint is for being laid in roofing dividing joint one on cement mortar protective course (3-1), being laid in the roofing dividing joint two on pea gravel concreten topping (3-2) or being laid in the roofing dividing joint three on rigid course three (3-3); Closely knit elastic strip (1) upper surface be filled in described roofing dividing joint one is not less than 10mm with the spacing between cement mortar protective course (3-1) upper surface, closely knitly is filled in interior elastic strip (1) upper surface of described roofing dividing joint two and the spacing between pea gravel concreten topping (3-2) is not less than 10mm; Closely knit elastic strip (1) upper surface be filled in described roofing dividing joint three is mutually concordant with the upper surface of rigid course three (3-3).
2. according to building roof surface layer dividing joint filleting constructing structure claimed in claim 1; it is characterized in that: closely knit elastic strip (1) upper surface be filled in described roofing dividing joint one is 10mm～15mm with the spacing between cement mortar protective course (3-1) upper surface, closely knitly is filled in interior elastic strip (1) upper surface of described roofing dividing joint two and the spacing between pea gravel concreten topping (3-2) is 10mm～15mm.
3. according to the described building roof surface layer of claim 1 or 2 dividing joint filleting constructing structure, it is characterized in that: described sealant (2) is rubber fillet, the sealing joint strip formed by the weather proofing sealant of brushing on elastic strip (1) top or the polyurethane cement sealant that formed by the polyurethane cement of brushing on elastic strip (1) top, and the left and right sides wall of described rubber fillet is pasted and fixed on respectively on the left and right sides slotted wall of described roofing dividing joint.
4. according to the described building roof surface layer of claim 1 or 2 dividing joint filleting constructing structure, it is characterized in that: the top, two ends, left and right of described sealant (2) is positioned at the upper surface below of cement mortar protective course (3-1), and the spacing between the top, two ends, left and right of described sealant (2) and cement mortar protective course (3-1) upper surface is 2mm ± 1mm; The top, two ends, left and right of described sealant (2) is positioned at the upper surface below of pea gravel concreten topping (3-2), and the spacing between the top, two ends, left and right of described sealant (2) and pea gravel concreten topping (3-2) upper surface is 2mm ± 1mm; The top, two ends, left and right of described sealant (2) is positioned at the upper surface below of institute's paving face brick (4) on rigid course three (3-3), and the spacing on the top, two ends, left and right of described sealant (2) and rigid course three (3-3) between institute's paving face brick (4) upper surface is 2mm ± 1mm.
5. according to the described building roof surface layer of claim 1 or 2 dividing joint filleting constructing structure, it is characterized in that: described elastic strip (1) is foam rods.
6. according to building roof surface layer dividing joint filleting constructing structure claimed in claim 4; it is characterized in that: the spacing between described sealant (2) middle part and cement mortar protective course (3-1) upper surface is 5mm ± 1m; spacing between described sealant (2) middle part and pea gravel concreten topping (3-2) upper surface is 5mm ± 1mm, and on described sealant (2) middle part and rigid course three (3-3), the spacing between institute's paving face brick (4) upper surface is 5mm ± 1mm.
7. according to building roof surface layer dividing joint filleting constructing structure claimed in claim 3, it is characterized in that: the width of described rubber fillet is than the large 2mm of the width of described roofing dividing joint.
8. according to building roof surface layer dividing joint filleting constructing structure claimed in claim 3, it is characterized in that: the interior thickness of described sealing joint strip is 5mm～6mm, and the interior thickness of described polyurethane cement sealant is 9mm～12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320465411.9U CN203383409U (en) | 2013-07-31 | 2013-07-31 | Caulking construction structure for surface layer dividing joints of building roof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320465411.9U CN203383409U (en) | 2013-07-31 | 2013-07-31 | Caulking construction structure for surface layer dividing joints of building roof |
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| CN203383409U true CN203383409U (en) | 2014-01-08 |
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| CN201320465411.9U Expired - Lifetime CN203383409U (en) | 2013-07-31 | 2013-07-31 | Caulking construction structure for surface layer dividing joints of building roof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967224A (en) * | 2014-05-21 | 2014-08-06 | 合肥建工集团有限公司 | Heat preservation slope finding layered construction method of large area cast-in-place foam concrete plane roof |
| CN104612332A (en) * | 2014-12-26 | 2015-05-13 | 山西四建集团有限公司 | Fine aggregate concrete roof double-glass strip dividing joint construction method |
| CN105421679A (en) * | 2015-11-06 | 2016-03-23 | 中国建筑第八工程局有限公司 | Dividing joint structure of fine aggregate concrete roof surface layers and construction method of dividing joint structure |
| CN105442763A (en) * | 2015-12-24 | 2016-03-30 | 山东万鑫建设有限公司 | Construction method for preventing and controlling cracks of roof surface course |
| CN108086603A (en) * | 2016-11-23 | 2018-05-29 | 北京中联天盛建材有限公司 | A kind of anti-water-stopping system of existing roofing and prevent water roofing |
| CN109339365A (en) * | 2018-11-27 | 2019-02-15 | 陕西鼎盛装饰工程有限责任公司 | A kind of inner wall surface seam lattice structure and construction method |
| CN111364696A (en) * | 2020-03-14 | 2020-07-03 | 山西四建集团有限公司 | Construction method for expansion joint of fine stone concrete flat roof |
| CN114319878A (en) * | 2021-11-24 | 2022-04-12 | 山东枣建建设集团有限公司 | Combined roof PVC lattice bar and installation and construction method thereof |
| CN114809108A (en) * | 2022-05-06 | 2022-07-29 | 河南省第二建设集团有限公司 | Novel concrete water dispersing structure and construction method thereof |
| CN115162624A (en) * | 2022-07-08 | 2022-10-11 | 北京城建五建设集团有限公司 | Concrete protective layer division strip and construction method |
-
2013
- 2013-07-31 CN CN201320465411.9U patent/CN203383409U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967224A (en) * | 2014-05-21 | 2014-08-06 | 合肥建工集团有限公司 | Heat preservation slope finding layered construction method of large area cast-in-place foam concrete plane roof |
| CN104612332A (en) * | 2014-12-26 | 2015-05-13 | 山西四建集团有限公司 | Fine aggregate concrete roof double-glass strip dividing joint construction method |
| CN105421679A (en) * | 2015-11-06 | 2016-03-23 | 中国建筑第八工程局有限公司 | Dividing joint structure of fine aggregate concrete roof surface layers and construction method of dividing joint structure |
| CN105442763A (en) * | 2015-12-24 | 2016-03-30 | 山东万鑫建设有限公司 | Construction method for preventing and controlling cracks of roof surface course |
| CN108086603A (en) * | 2016-11-23 | 2018-05-29 | 北京中联天盛建材有限公司 | A kind of anti-water-stopping system of existing roofing and prevent water roofing |
| CN109339365A (en) * | 2018-11-27 | 2019-02-15 | 陕西鼎盛装饰工程有限责任公司 | A kind of inner wall surface seam lattice structure and construction method |
| CN111364696A (en) * | 2020-03-14 | 2020-07-03 | 山西四建集团有限公司 | Construction method for expansion joint of fine stone concrete flat roof |
| CN114319878A (en) * | 2021-11-24 | 2022-04-12 | 山东枣建建设集团有限公司 | Combined roof PVC lattice bar and installation and construction method thereof |
| CN114809108A (en) * | 2022-05-06 | 2022-07-29 | 河南省第二建设集团有限公司 | Novel concrete water dispersing structure and construction method thereof |
| CN115162624A (en) * | 2022-07-08 | 2022-10-11 | 北京城建五建设集团有限公司 | Concrete protective layer division strip and construction method |
| CN115162624B (en) * | 2022-07-08 | 2023-06-16 | 北京城建五建设集团有限公司 | Concrete protective layer dividing strip and construction method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: No.2, Hongqi Road, Weibin District, Baoji City, Shaanxi Province Patentee after: SCEGC NO.7 CONSTRUCTION ENGINEERING GROUP Co.,Ltd. Address before: No.2, Hongqi Road, Baoji City, Shaanxi Province Patentee before: SEVENTH ENGINEERING CO LTD SHAANXI CONSTRUCTION ENGINEERING GROUP Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
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Granted publication date: 20140108 |