CN110792202A - Surface crack prevention and control process for assembly type partition plate joint - Google Patents
Surface crack prevention and control process for assembly type partition plate joint Download PDFInfo
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- CN110792202A CN110792202A CN201911059310.XA CN201911059310A CN110792202A CN 110792202 A CN110792202 A CN 110792202A CN 201911059310 A CN201911059310 A CN 201911059310A CN 110792202 A CN110792202 A CN 110792202A
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- concrete
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- 238000005192 partition Methods 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000002265 prevention Effects 0.000 title claims abstract description 5
- 239000004567 concrete Substances 0.000 claims abstract description 46
- 239000011178 precast concrete Substances 0.000 claims abstract description 22
- 238000005336 cracking Methods 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 239000002023 wood Substances 0.000 claims description 11
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 5
- 235000011613 Pinus brutia Nutrition 0.000 claims description 5
- 241000018646 Pinus brutia Species 0.000 claims description 5
- 239000011120 plywood Substances 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 13
- 238000010422 painting Methods 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 239000011083 cement mortar Substances 0.000 description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 229920000715 Mucilage Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
- E04B2/7401—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using panels without a frame or supporting posts, with or without upper or lower edge locating rails
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
- E04B2/82—Removable non-load-bearing partitions; Partitions with a free upper edge characterised by the manner in which edges are connected to the building; Means therefor; Special details of easily-removable partitions as far as related to the connection with other parts of the building
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
- E04B2/82—Removable non-load-bearing partitions; Partitions with a free upper edge characterised by the manner in which edges are connected to the building; Means therefor; Special details of easily-removable partitions as far as related to the connection with other parts of the building
- E04B2/821—Connections between two opposed surfaces (i.e. floor and ceiling) by means of a device offering a restraining force acting in the plane of the partition
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
- E04B2/82—Removable non-load-bearing partitions; Partitions with a free upper edge characterised by the manner in which edges are connected to the building; Means therefor; Special details of easily-removable partitions as far as related to the connection with other parts of the building
- E04B2/828—Connections between partitions and structural walls
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
- E04B2002/7488—Details of wiring
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention belongs to the technical field of assembly type building construction, and particularly relates to a surface crack prevention and treatment process for an assembly type partition plate abutted seam, which comprises the following steps: reserving a post-cast strip in the vertical direction between the prefabricated partition wall board and the adjacent building components, and applying horizontal compressive stress between the prefabricated partition wall board and the adjacent building components by using a force application device, wherein the compressive stress generated by the force application device is greater than the stress cracking value of the wall body at the abutted seam; and replacing the force application device with the precast concrete block to finish pipeline pre-embedding and reinforcing mesh installation of the post-cast strip, and sealing the post-cast strip by concrete. The invention can effectively overcome the common problem of the cracking quality of the surface painting layer at the splicing position of the assembly type partition board and improve the engineering construction quality and the economic benefit.
Description
Technical Field
The invention relates to a novel construction process and a related construction machine tool which are used for assembly type building construction and are adopted aiming at common fault of the cracking quality of a painting layer on the surface of a splicing position of a partition board.
Background
At present, China is vigorously pushing fabricated buildings, wherein the application of the precast concrete partition boards is wider, and the process characteristics of installation and construction are as follows: the tongue-and-groove between every partition plate and between partition plate and structural wall, post are inlaid with adhesive, it is not easy to be because of the quality of the adhesive mortar is not good, the adhesive mortar is not full in the joint, the partition plate wood wedge is removed too early, the water and electricity pipeline slot is not normal, the time is too early, and the temperature change causes the quality common fault that the plastering layer of the wall body cracks. Due to the brand new characteristic of the assembly type construction, the traditional method for treating the common quality problem of the crack on the surface of the plate joint has poor effect in actual construction.
The Chinese patent specification with publication number CN 101942905A and publication date 2011, 1, 12 discloses a method for treating fabricated floor slab cracks, which is realized by the following steps: (1) firstly, adjusting the floor slab gap before construction, wherein the floor slab gap is controlled to be 30-35 mm; (2) a wood template is placed below the floor slab gap, and then a mandril supporting column wood template is bound by steel pipes and iron wires; (3) cleaning sundries of the floor slab, washing the floor slab joints at the upper part with water, washing the floor slab joints one by one, removing the sundries, washing the lower part of the floor slab with a water pipe, washing the lower surface of the floor slab with a steel brush, and then washing the dirt until the dirt is clean; (4) a cement mortar binding layer is prepared through mixing C30 fine stone concrete to decrease the shrinkage of concrete, pouring cement mortar in the gaps of floor slab, vibrating while beating to increase the compactness of concrete, beating and compacting the surface of concrete, combining the cement mortar binding layer, plastering, curing to decrease the shrinkage of concrete, curing for 15-18 days, demoulding when the strength of concrete reaches 70%, cutting iron wire, removing template, chiseling the projected part of cement mortar in the gaps, mixing said cement mortar with 108 adhesive in the weight ratio of 1:2, repairing and leveling the surface of floor slab, repairing and leveling at the normal temperature of 15-25 ℃ for 8 hours, then washing all dirt at the bottom of the floor slab by using a water pipe, and airing; (5) brushing a binder, sticking a glass fiber mesh, after demolding, mixing 108 glue and cement to prepare the binder, wherein the weight ratio of the 108 glue to the cement is 90-95:5-10, brushing the binder on the width of a seam part of a floor slab, which is 150mm, and then sticking the glass fiber mesh, wherein the meshes of the glass fiber mesh are 5mm multiplied by 5mm, the meshes are fully stuck with mucilage, the fullness reaches 100%, and standing for 8 hours; (6) after the integral floor slab is brushed with the cement paste binder for one time, performing cement mortar plastering on the ceiling, wherein the thickness is 9-11 mm; the adhesive cement binder is prepared by uniformly mixing 90-95% of 107 adhesive by weight and 5-10% of cement by weight, and the cement mortar is cement and sand which are 1: 3.
The Chinese patent specification with publication number CN 104669424A and publication number 2015, 6 and 3 discloses a concrete steam-curing crack treatment technology, which is characterized in that prefabricated reinforced concrete plate moulds of an assembled housing are sequentially prepared on an automatic walking track according to specified procedures, and after concrete pouring of upper leaf plates is finished, a layer of film material is quickly paved in the forward walking process of the moulds before the moulds enter a steam curing kiln for steam curing, so that the moisture of the outer-layer concrete is prevented from being quickly diffused, and cracks are effectively prevented.
The crack treatment methods disclosed in the two patent publications start from a means of reducing crack generation, and only the crack generation can be reduced, and the problem of cracks of the fabricated building cannot be solved from the source.
Disclosure of Invention
The invention provides a process for preventing and treating the surface cracks of the abutted seams of an assembly type partition wall board, aiming at the quality problem that the plastering layer at the abutted seam is easy to crack in the construction of the assembly type building prefabricated partition wall board.
The invention aims to realize the prevention and treatment process of the surface cracks of the assembly type partition plate joints by the following technical scheme, which is characterized in that a post-pouring belt in the vertical direction is reserved between a prefabricated partition plate and an adjacent building component, a force application device is utilized to apply horizontal compressive stress between the prefabricated partition plate and the adjacent building component, and the compressive stress generated by the force application device is greater than the stress cracking value of the wall body joints; and replacing the force application device with the precast concrete block to finish pipeline pre-embedding and reinforcing mesh installation of the post-cast strip, and sealing the post-cast strip by concrete.
Preferably, the control process specifically comprises the following steps:
(1) selecting a post-pouring belt with the length of 20-30cm reserved at the installation position of a vertical pipeline between a shear wall, a concrete column and a prefabricated partition board or between the prefabricated partition board and the prefabricated partition board, applying horizontal force at the position of the post-pouring belt by using a force application device before curing an adhesive filled between the shear wall, the concrete column and the prefabricated partition board or between the prefabricated partition board and the prefabricated partition board, tightly pushing the shear wall, the concrete column and the prefabricated partition board or between the prefabricated partition board and generating compressive stress, wherein the compressive stress generated by the force application device is greater than the stress cracking value at the splicing joint of the wall body;
(2) placing a plurality of precast concrete blocks in the reserved post-cast strip position along the vertical direction, tightly jacking, and simultaneously installing a profile steel clamping piece at the top of the prefabricated partition board;
(3) and taking out the force application device, installing the pre-buried pipeline at the position of the post-cast strip, placing the reinforcing mesh and then pouring concrete.
Preferably, 1 force application device is arranged along the post-cast strip position along the vertical direction every 100cm, and the compressive stress generated by the force application devices is 80-120 KN. .
Preferably, the force application device is an automobile jack, a hydraulic cylinder or an air cylinder.
Preferably, the post-cast strip template is made of a 16mm thick plywood, 50mm multiplied by 100mm pine square timber and phi 12mm split bolts are used as wood hoops, and the post-cast strip template and the concrete wall (column) structure with the same mark number are poured and sealed by the micro-expansion agent.
Preferably, the size of the reinforcing steel mesh is phi 6@100, and the reinforcing steel mesh is fully distributed at the position of the reserved post-cast strip.
Preferably, the concrete for casting the post-cast strip is micro-expansion concrete.
Preferably, the length of the precast concrete block is equal to the width of the post-cast strip, and the section of the precast concrete block is 6cm × 6 cm.
Preferably, the vehicle jack is a 2-ton hand-operated jack.
Preferably, 1 precast concrete block is placed in the reserved post-cast strip position every 50cm along the vertical direction and is tightly propped by a wedge block.
Compared with the prior art, the invention has the following beneficial effects: the invention has simple and reliable process, adopts general machines and tools, has low cost, convenient construction and high repeated utilization rate, resists the stress cracking at the joint of the wall body by the pressure stress generated by the force application device in the wall body, thereby achieving the aim of solving the common quality problem. The invention can effectively overcome the common problem of the cracking quality of the surface painting layer at the splicing position of the assembly type partition board and improve the engineering construction quality and the economic benefit.
Drawings
FIG. 1 is a schematic view illustrating horizontal stress applied to a prefabricated partition wall panel by using a jack according to the present invention;
FIG. 2 is a schematic view of the present invention replacing the jack with a wood wedge for plugging the precast concrete block;
FIG. 3 is a schematic diagram of laying steel mesh sheets and embedding pipelines in the invention;
FIG. 4 is a schematic view of the bracing template of the present invention;
FIG. 5 is a schematic representation of a completed concrete post-cast strip of the present invention;
in the figure: 1 concrete wall (column), 2 concrete floor, 3 concrete beam (plate), 4 partition plates, 5 partition plate inter-plate abutted seams, 6 binders, 7 post-cast strips, 8 jacks, 9-shaped steel clamping pieces, 10 fixing shooting nails, 11C30 micro-expansion concrete, 12 precast concrete blocks, 13 wooden wedge blocks, 14 steel bar net sheets, 15 connection, 16 pre-embedded pipelines, 17 bottom boxes, 18 templates and 19 concrete post-cast strips.
Detailed Description
Example 1
As shown in fig. 1 to 5, the prefabricated building includes a concrete wall (column) 1, a concrete floor 2, a concrete beam (slab) 3, and a prefabricated partition wall panel 4. And a patchwork 5 between the partition wall plates is reserved between the adjacent prefabricated partition wall plates 4.
The surface crack preventing and treating process for assembling partition board includes the following steps:
a20 cm post-cast strip 7 is reserved between the concrete column 1 and the prefabricated partition board 4 (the thickness is 100mm, and 6 blocks in total), and the post-cast strip 7 is selectively positioned at the installation position of a vertical pipeline. A2-ton hand-operated vehicle jack 8 is arranged every 100cm in the vertical direction of the partition wall board, 80KN horizontal compressive stress is applied between wall columns by the vehicle jack 8, and horizontal pressure is applied to the rear pouring belt 7 part to tightly push each plate block and generate compressive stress before the adhesive 6 filled between the wall boards is cured.
And (2) placing 1 precast concrete block 14 with the length equal to the width of the post-cast strip and the side length of about 6cm into every 50cm, tightly pushing the precast concrete block by using a wood wedge block 13, installing the section steel clamping piece 9 at the top of the partition plate, taking out a jack, installing a connection 15, pre-buried pipelines 16 and a bottom box 17, placing the reinforcing steel bar mesh 14 with the diameter of phi 6@100 into the precast concrete block, and fully distributing the reinforcing steel bar mesh 14 at the position of the reserved post-cast strip 7. And (3) erecting a post-cast strip closed template 18 by adopting a 16mm thick plywood, adopting 50mm multiplied by 100mm pine square timber and a phi 12 split bolt as a timber hoop, reserving a feeding port at the top end, and then pouring slightly-expanded concrete to form a concrete post-cast strip 19.
The invention replaces the jack with the precast concrete block and seals the post-cast strip with the micro-expansion concrete. After the construction process is finished, the stress cracking at the joint of the wall body is resisted by the pressure stress generated by the jack in the wall body, so that the aim of solving the common quality problem is fulfilled.
Example 2
The surface crack preventing and treating process for assembling partition board includes the following steps:
and a post-cast strip of 25cm is reserved between the shear wall and the prefabricated partition wall boards (the thickness is 200mm, and the number of the post-cast strips is 8 in total), and the post-cast strip is selectively positioned at the installation position of the vertical pipeline. A hydraulic cylinder is arranged every 100cm along the vertical direction of the partition board, 100KN horizontal compressive stress is applied between wall columns by the hydraulic cylinder, and horizontal pressure is applied to the post-cast strip part to tightly push each plate block and generate compressive stress before the adhesive filled between the wall boards is cured.
And (2) placing 1 precast concrete block with the length equal to the width of the post-cast strip and the side length of about 6cm into every 50cm, tightly pushing by using a wood wedge block, installing a section steel clamping piece at the top of the partition plate, taking out a hydraulic cylinder, installing a connection, pre-burying a pipeline and a bottom box, placing a phi 6@100 reinforcing steel mesh sheet, and fully distributing the reinforcing steel mesh sheet at the position of the reserved post-cast strip. And (3) sealing the post-cast strip by adopting a 16mm thick plywood, adopting 50mm multiplied by 100mm pine square timber and a phi 12 split bolt as wood hoop, reserving a feeding port at the top end, and then pouring micro-expansion fine stone concrete to form the concrete post-cast strip.
The invention replaces the hydraulic cylinder with precast concrete blocks and closes the post-cast strip with micro-expansive fine stone concrete. After the construction process is finished, the stress cracking at the abutted seam of the wall body is resisted by the pressure stress generated by the hydraulic cylinder in the wall body, so that the aim of solving the common quality problem is fulfilled.
Example 3
The surface crack preventing and treating process for assembling partition board includes the following steps:
and reserving a post-cast strip of 30cm between the prefabricated partition board and the prefabricated partition board (the thickness is 200mm, and 5 blocks are arranged on each side), wherein the post-cast strip is selectively positioned at the installation position of the vertical pipeline. And arranging one air cylinder every 1m in the vertical direction of the partition board, applying 120KN horizontal compressive stress between the wall columns by using the air cylinder, and applying horizontal pressure to tightly push each plate at the position of a post-cast strip before the adhesive embedded and filled between the wall boards is cured to generate the compressive stress.
And (2) placing 1 precast concrete block with the length equal to the width of the post-cast strip and the side length of about 6cm into every 50cm, jacking by using a wedge block, installing a profile steel clamping piece at the top of the partition plate, taking out the cylinder, installing the embedded pipeline, placing a phi 6@100 steel bar mesh sheet, and fully distributing the steel bar mesh sheet at the position of the reserved post-cast strip. The post-cast strip is sealed by adopting a plywood with the thickness of 16mm, a 50mm multiplied by 100mm pine square wood and a phi 12 split bolt are adopted as wood hoop, and a feeding hole is reserved at the top end. And pouring micro-expansion concrete.
The cylinder is replaced by the precast concrete block, and the post-cast strip is sealed by the micro-expansion concrete. After the construction process is finished, the stress cracking at the abutted seam of the wall body is resisted by the pressure stress generated by the cylinder in the wall body, so that the aim of solving the common quality problem is fulfilled.
Claims (10)
1. The surface crack prevention and treatment process for the assembled partition board joint is characterized by comprising the following steps of: reserving a post-cast strip in the vertical direction between the prefabricated partition wall board and the adjacent building components, and applying horizontal compressive stress between the prefabricated partition wall board and the adjacent building components by using a force application device, wherein the compressive stress generated by the force application device is greater than the stress cracking value of the wall body at the abutted seam; and replacing the force application device with the precast concrete block to finish pipeline pre-embedding and reinforcing mesh installation of the post-cast strip, and sealing the post-cast strip by concrete.
2. The assembled partition board abutted seam surface crack control process according to claim 1, which is characterized in that the control process specifically comprises the following steps:
(1) selecting a post-pouring belt with the length of 20-30cm reserved at the installation position of a vertical pipeline between a shear wall, a concrete column and a prefabricated partition board or between the prefabricated partition board and the prefabricated partition board, and applying horizontal compressive stress to the post-pouring belt by using a force application device to tightly push the shear wall, the concrete column and the prefabricated partition board or between the prefabricated partition board and generate compressive stress before curing an adhesive filled between the shear wall, the concrete column and the prefabricated partition board or between the prefabricated partition board and the prefabricated partition board, wherein the compressive stress generated by the force application device is greater than the stress cracking value at the joint of the wall;
(2) placing a plurality of precast concrete blocks in the reserved post-cast strip position along the vertical direction, tightly jacking, and simultaneously installing a profile steel clamping piece at the top of the prefabricated partition board;
(3) and taking out the force application device, installing the pre-buried pipeline at the position of the post-cast strip, placing the reinforcing mesh and then pouring concrete.
3. The process of preventing and treating cracks on the surface of the assembled partition board joints according to claim 1 or 2, wherein 1 force application device is arranged along the post-cast strip along the vertical direction every 100cm, and the compressive stress generated by the force application devices is 80-120 KN.
4. The process for preventing and treating the surface cracks of the assembled partition plate joints according to claim 1 or 2, wherein the force application device is an automobile jack, a hydraulic cylinder or an air cylinder.
5. The assembled partition board surface crack control process of claim 1 or 2, wherein the post-cast strip is formed by pouring a closed post-cast strip with a micro-expansion agent into concrete of the same grade as a concrete wall or a concrete column structure by using a 16mm thick plywood, 50mm x 100mm pine and phi 12 split bolts as wood hoops.
6. The process for preventing and treating the surface cracks of the assembled partition plate joints according to claim 1 or 2, wherein the steel mesh is phi 6@100, and the steel mesh is fully distributed at the position of a post-pouring belt.
7. The process for preventing and treating the surface cracks of the assembled partition boards according to claim 1 or 2, wherein the concrete for casting the post-cast strip is micro-expansive concrete.
8. The process for preventing and treating the surface cracks of the assembled partition plate joints according to claim 1 or 2, wherein the length of the precast concrete block is equal to the width of the post-cast strip, and the section of the precast concrete block is 6cm x 6 cm.
9. The assembly type partition board abutted seam surface crack control process according to claim 4, wherein the jack for vehicles is a 2-ton hand-operated jack.
10. The process for preventing and treating the surface cracks of the assembled partition plate joints according to claim 2, wherein 1 precast concrete block is placed in each 50cm of the reserved post-cast strip position along the vertical direction and is tightly propped by a wedge block.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911059310.XA CN110792202B (en) | 2019-11-01 | 2019-11-01 | Surface crack prevention and control process for assembly type partition plate joint |
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| CN201911059310.XA CN110792202B (en) | 2019-11-01 | 2019-11-01 | Surface crack prevention and control process for assembly type partition plate joint |
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| CN110792202B CN110792202B (en) | 2022-05-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734017A (en) * | 2020-07-06 | 2020-10-02 | 中铁二十三局集团第四工程有限公司 | Light partition board mounting structure and mounting method |
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