CN107119909A - The construction method of calcium silicate board partition wall - Google Patents
The construction method of calcium silicate board partition wall Download PDFInfo
- Publication number
- CN107119909A CN107119909A CN201710260087.XA CN201710260087A CN107119909A CN 107119909 A CN107119909 A CN 107119909A CN 201710260087 A CN201710260087 A CN 201710260087A CN 107119909 A CN107119909 A CN 107119909A
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- CN
- China
- Prior art keywords
- calcium silicate
- silicate board
- keel
- partition wall
- piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
Abstract
A kind of construction method of calcium silicate board partition wall, step:Lightgage steel joist skeleton is installed, it includes day keel, ground joist, vertical keel, horizontal punching keel and calcium silicate board piece and strengthens keel;The installation of calcium silicate board, the position line is first marked on calcium silicate board, calcium silicate board border region self-plugging rivet eyelet is drilled with around calcium silicate board surrounding and set central region self-plugging rivet eyelet in central region again, then the front side of calcium silicate board and lightgage steel joist skeleton is fixed by self-plugging rivet, then the rear side of calcium silicate board and lightgage steel joist skeleton is fixed;Surface layer is covered with paint, lacquer, colour wash, etc., and first short side piece and long side piece is filled using anticracking grout, then corresponding to short side piece and long side edge joint position bandage reinforcement, then the surface of calcium silicate board is covered with paint, lacquer, colour wash, etc., calcium silicate board partition wall is obtained.Avoid calcium silicate board partition wall from surface crack occur, ensure lasting stability firmly and ensure good flatness, be not in fall bits to fall slag phenomenon.
Description
Technical field
The invention belongs to building interior trim technical field, and in particular to a kind of construction method of calcium silicate board partition wall.
Background technology
Calcium silicate board(English name is:calcium sillicate)It is by siliceous material(If principal component is SiO2), calcium
Material(Such as CaO), reinforcing fiber and auxiliary agent coordinate by rational proportion, the one kind for taking or being molded and be made through maintenance through copying is new
The inorganic building material of type.Calcium silicate board in addition to the strong point with environmental protection, also with fire prevention, moisture resistance, anti-scratch, it is heat-insulated,
The characteristics of Anti-moth-eating loses and service life is long, be widely used in the suspended ceiling and partition wall of business engineering construction, home decoration,
The wallboard of the indoor engineerings such as furniture liner plate, billboard liner plate, the partition panel of ship, the refractory slab in warehouse, tunnel.
But, because the developing history of calcium silicate board is relatively short, for example China succeeds in developing the eighties, the mid-80
Into the development phase, the just gradually popularization and application of the later stage nineties, thus the technical standard, the technical specification that match therewith not yet go out
Platform, and the research and development of construction technology, special keel, hanging piece and installation method etc. are relatively lagged behind.Calcium silicate board partition wall table
Face cracks or even falls to consider to be worth doing a scaling-off big bottleneck into current restriction popularization and application, but applicants contemplate that, the problem
And calcium silicate board itself is not lain in, and it is construction method.
It is " the fire protection flame retarding cement silicon that CN102051923B recommends that notification number is seen in disclosed Chinese patent literature
Sour calcium plate protection wall and its construction method ", is referred to " water shutoff mud calcium silicate plate ", is specifically in that patent:" by cement silicon
Sour calcium plate surrounding is fixed by screw with transom and centre keel, and decorative coveringn, then filleting are applied in the outer surface of cement calcium silicate board,
Pack the outer wall fluid sealant at filleting i.e. between cement calcium silicate board ".Because the patent is the insulation for skin
And propose, thus aforementioned patent does not have instructive for building partition wall in Indoor environment, and it is foregoing for making up
Crackle, prevent bits from falling slag, ensureing lasting flatness etc. without reference.Technical scheme described below is at this
Plant what is produced under background.
The content of the invention
The task of the present invention is to provide a kind of construction method of calcium silicate board partition wall, the calcium silicate board obtained by this method
Partition wall can not only avoid the occurrence of surface crack but also can ensure the firmness of lasting stability and can also to prevent bits scaling-off.
What the task of the present invention was performed by, a kind of construction method of calcium silicate board partition wall comprises the following steps:
A) lightgage steel joist skeleton is installed, installs light according to the size that calcium silicate board partition wall position is measured need to be set to Indoor environment
Steel joist skeleton, the lightgage steel joist skeleton includes day keel, ground joist, vertical keel, horizontal punching keel and calcium silicate board and spelled
Seam strengthens keel, and day keel are laterally parallel with ground joist, and the top surface of day keel and building is fixed, while by ground joist
Fixed with the bottom surface of building, vertical keel is fixed between day, ground joist with space state, horizontal punching keel are with interval shape
State is arranged in vertical keel and fixed with vertical keel, and calcium silicate board piece strengthens row tabular condition of the keel according to calcium silicate board
Fix, installed with vertical keel in the edge corresponding to the short side direction of two adjacent calcium silicate boards up and down
Lightgage steel joist skeleton;
B) the installation of calcium silicate board, the first position line marked on calcium silicate board for mutually being fixed with lightgage steel joist skeleton, then
Away from being drilled with calcium silicate board border region self-plugging rivet eyelet around calcium silicate board surrounding at calcium silicate board edge 12-16mm, and
Calcium silicate board central region and be drilled with central region self-plugging rivet eyelet at corresponding to lightgage steel joist frame position, and
The front side of calcium silicate board and lightgage steel joist skeleton is fixed by self-plugging rivet afterwards, with phase Tongfang after the fixation of front side is completed
Formula fixes the rear side of calcium silicate board and lightgage steel joist skeleton, in the fixation procedure of calcium silicate board, by the short side of calcium silicate board
The edge in direction is corresponding with calcium silicate board piece reinforcement keel, and the calcium silicate board in the adjacent columns of left and right two
The position of short side piece of short side direction mutually stagger, and the length of the long side direction of the calcium silicate board in the adjacent columns of left and right two
Side piece corresponds to each other;
C) surface layer is covered with paint, lacquer, colour wash, etc., first to step B)Described short side piece and long side piece are filled using anticracking grout, then in correspondence
In short side piece and long side edge joint position bandage reinforcement, then the surface of the calcium silicate board is covered with paint, lacquer, colour wash, etc., silicon is obtained
Sour calcium plate partition wall.
In the specific embodiment of the present invention, in step A)Described in vertical keel spacing for 300mm or
400mm, described vertical keel itself carries punching keel resigning hole, the position of the punching keel resigning hole on vertical keel
Be it is corresponding with described horizontal punching keel, the horizontal punching keel through vertical keel punching keel resigning hole and with
Punching keel resigning hole transfer blade for forming punching keel resigning hole is fixed.
In another specific embodiment of the present invention, on described vertical keel and corresponding to the transverse direction
The position of the top of punching keel is embedded with restriction inserted sheet.
In another specific embodiment of the present invention, an inserted sheet pinch is respectively formed with the two ends of the restriction inserted sheet
With a pair of clip slots, and it is formed with a punching keel in the bottom for limiting inserted sheet and limits groove, a pair of clip slots corresponds respectively to inserted sheet
The upper and lower sides of pinch and with described vertical keel scarf, inserted sheet pinch is clamped on vertical keel, and punching keel limit groove
It is engaged with horizontal punching keel.
In another specific embodiment of the present invention, in step A)Described in calcium silicate board piece strengthen keel
Two ends are respectively constituted towards upper side reinforcement keel connecting plate, and the reinforcement keel connecting plate strengthens keel with calcium silicate board piece
It is perpendicular and fixed with described vertical keel.
In the also specific embodiment of the present invention, step B)Described in calcium silicate board border region self-plugging rivet
The spacing of eyelet is that the spacing of the calcium silicate board central region self-plugging rivet eyelet is less than 250mm less than 150mm.
In a still more specific embodiment of the invention, step B)Described in short side piece and long side piece
Gap width is identical.
The present invention's and then in a specific embodiment, described gap width is 3-6mm.
Step C in yet a further embodiment of the present invention)Described in anticracking grout by it is following by weight
The raw material of number proportioning is constituted:285-330 parts of cement, 20-30 parts of 530-570 parts of quartz sand, the putty sizing material of 40-80 mesh, fill out
2.8-3.2 parts of 110-130 parts of material, 1.4-1.6 parts of HPMC celluloses and PP fibers;The described surface to calcium silicate board is applied
Decorations refer to the surface batch putty to calcium silicate board.
In the present invention again and then in a specific embodiment, being added in described putty has glue.
The technical scheme that the present invention is provided is due at the edge corresponding to the short side direction of two adjacent calcium silicate boards up and down
Position is provided with the calcium silicate board piece fixed with vertical keel and strengthens keel, and due to the spacing of two adjacent vertical keels being set
300 or 400mm is calculated as, due also to being the silicic acid less than 150mm being drilled with spacing distance at calcium silicate board edge 12-16mm
Calcium plate border region self-plugging rivet eyelet, and then due to being set as 3-6mm to the long and short width in piece and spelling when long and short
Anticracking grout, then bandage and top finishing successively are filled in seam, thus can both avoid calcium silicate board partition wall from surface occur and is split
Seam, can ensure lasting stability firmly and ensure good flatness, be not in fall bits to fall slag phenomenon again.
Brief description of the drawings
Fig. 1 is the schematic diagram of the calcium silicate board partition wall obtained by construction method of the present invention.
Fig. 2 is that horizontal punching keel and calcium silicate board piece shown in Fig. 1 strengthen keel and showing that vertical keel is fixed
It is intended to.
Embodiment
Embodiment 1:
Incorporated by reference to Fig. 1 and Fig. 2, the step included by the construction method of calcium silicate board partition wall of the present invention is as follows:
A) lightgage steel joist skeleton 2 is installed, it is such as high according to the size that calcium silicate board partition wall position need to be set to measure to Indoor environment
Degree and length dimension install lightgage steel joist skeleton 2, and the lightgage steel joist skeleton 2 includes day keel 21, ground joist 22, vertical keel
23rd, horizontal punching keel 24 and calcium silicate board piece strengthen keel 25, and day keel 21 are laterally parallel with ground joist 22, sky dragon
Bone 2 is fixed using sky dragon expandable bone bolt 211 with top surface 3, and ground joist 22 uses the bottom surface 4 of ground joist expansion bolt and building
Fixed, vertical keel 23 is fixed between day, ground joist 21,22 with space state, and horizontal punching keel 24 are preferably with 1.2m's
Vertical keel 23 is arranged in space state and fixed with vertical keel 23.Calcium silicate board piece strengthens keel 25 according to silicic acid
Calcium plate 1(The size of calcium silicate board 1 is the long > entire plates of the wide > × 2.44m < of 1.22m < and non-entire plate)Row's tabular condition(Also it can claim
Arrangement situation)Fix, obtain with vertical keel 23 in the edge corresponding to the short side direction of two adjacent calcium silicate boards 1 up and down
To the lightgage steel joist skeleton 2 installed, in the present embodiment, the spacing of two adjacent vertical keels 23 for 300mm or
400mm, according to the specific size of partition wall, when running into local non-300mm or 400mm multiple, spacing is smaller than 300 or is less than
400mm(The present embodiment is 300mm), as shown in Figure 2, horizontal punching keel 24 pass through the punching keel resigning hole of vertical keel 23
231 and shifted using punching keel self-plugging rivet 241 with the punching keel resigning hole for forming punching keel resigning hole 231
Plate 2311 is fixed, and restriction is embedded with vertical keel 23 and in the position of the top corresponding to aforementioned lateral punching keel 24
Inserted sheet 232, an inserted sheet pinch 2321 and a pair of clip slots 2322 is respectively formed with the two ends for limiting inserted sheet 232, and insert limiting
The bottom of piece 232 is formed with a punching keel and limits groove 2323, and a pair of clip slots 2322 correspond respectively to the upper of inserted sheet pinch 2321
Downside and with the foregoing scarf of vertical keel 23, inserted sheet pinch 2321 is clamped on vertical keel 23, and punching keel limit groove
2323 are engaged with horizontal punching keel 24, and foregoing calcium silicate board piece strengthens the two ends of keel 25 towards the upper each structure in side
Strengthen keel connecting plate 251 into having, the reinforcement keel connecting plate 251 and calcium silicate board piece reinforcement keel 25 are perpendicular and lead to
Connecting plate self-plugging rivet 252 is crossed to fix with foregoing vertical keel 23;
B) the installation of calcium silicate board 1, first marks the position line for mutually being fixed with lightgage steel joist skeleton 2 on calcium silicate board 1, then
At away from the edge 12-16mm of calcium silicate board 1(The present embodiment is at 14mm)Calcium silicate board edge is drilled with around the surrounding of calcium silicate board 1
Region self-plugging rivet eyelet 11, and calcium silicate board 1 central region and be drilled with correspondence lightgage steel joist frame position
Portion region self-plugging rivet eyelet 12, is then fixed the front side of calcium silicate board 1 and lightgage steel joist skeleton 2 by self-plugging rivet, when
The rear side of calcium silicate board 1 and lightgage steel joist network framework 2 is fixed in the same manner after the fixation for completing front side, in calcium silicate board
In 1 fixation procedure, the edge of the short side direction of calcium silicate board 1 and foregoing calcium silicate board piece are strengthened into keel 25 relative
Answer, and the position of the short side piece 13 of the short side direction of the calcium silicate board 1 in the adjacent columns of left and right two is mutually staggered, and left and right
The long side piece 14 of the long side direction of calcium silicate board 1 in two adjacent columns is corresponded to each other, and foregoing calcium silicate board border region is taken out
Core rivet eyelet 11 is smaller than 150mm(The present embodiment is 100mm), foregoing calcium silicate board central region self-plugging rivet eyelet
12 are smaller than 250mm(The present embodiment is 200mm), foregoing short side piece 13 and the gap width of long side piece 14 are
Identical, is respectively specifically 3-6mm(The present embodiment is 5mm);
C) surface layer is covered with paint, lacquer, colour wash, etc., first to step B)Described short side piece 13 and long side piece 14 are filled using anticracking grout, then
Corresponding to bandage reinforcement at short side piece 13 and long side piece 14, then had to the surface of calcium silicate board 1 using addition
Glue is that the putty modulated by glue is covered with paint, lacquer, colour wash, etc.(Industry custom claims batch putty), obtain calcium silicate board partition wall.In this step
Anticracking grout described in rapid is made up of the following raw material matched by weight:Cement(325#)330 parts, the quartz of 40 mesh
530 parts of sand, 25 parts of putty sizing material, filler(Using flyash)110 parts, HPMC celluloses(That is " hydroxypropyl methyl cellulose ")
1.4 parts and PP fibers(That is " polypropylene fibre ")3.2 parts, the mechanical mixture that added water when using is uniform.
Embodiment 2:
Step C will only be constituted)In the parts by weight of each raw material of the anticracking grout be changed to 285 parts of cement, the quartz of 60 mesh
570 parts of sand, 20 parts of putty sizing material, filler are 3 parts of 130 parts of flyash, 1.5 parts of HPMC celluloses and PP fibers, and remaining is with right
The description of embodiment 1.
Embodiment 3:
Step C will only be constituted)In the parts by weight of each raw material of the anticracking grout be changed to 310 parts of cement, the quartz of 80 mesh
550 parts of sand, 30 parts of putty sizing material, filler are 2.8 parts of 120 parts of flyash, 1.6 parts of HPMC celluloses and PP fibers, and remaining is same
Description to embodiment 1.
In summary, the technical scheme that the present invention is provided compensate for the shortcoming in prior art, favorably accomplish invention
Task, has faithfully cashed the technique effect referred in the superincumbent technique effect column of applicant.
Claims (10)
1. a kind of construction method of calcium silicate board partition wall, it is characterised in that comprise the following steps:
Lightgage steel joist skeleton (2) A) is installed, according to the size peace that calcium silicate board partition wall position need to be set to measure to Indoor environment
Lightgage steel joist skeleton (2) is filled, the lightgage steel joist skeleton (2) includes day keel (21), ground joist (22), vertical keel (23), horizontal stroke
Strengthen keel (25) to punching keel (24) and calcium silicate board piece, day keel (21) are laterally parallel with ground joist (22),
The top surface (3) of day keel (21) and building is fixed, at the same the bottom surface (4) of ground joist (22) and building is fixed, vertically
Keel (23) are fixed between day, ground joist (21,22) with space state, and horizontal punching keel (14) are arranged in space state
Vertical keel (23) and fixed with vertical keel (23), calcium silicate board piece strengthens keel (25) according to calcium silicate board (1)
Tabular condition is arranged solid corresponding to the edge of the short side direction of two adjacent calcium silicate boards (1) up and down and vertical keel (23)
It is fixed, the lightgage steel joist skeleton (2) installed;
B) the installation of calcium silicate board (1), first marks the position for mutually being fixed with lightgage steel joist skeleton (2) on calcium silicate board (1)
Line is put, then calcium silicate board border region is drilled with around calcium silicate board (1) surrounding at away from calcium silicate board (1) edge 12-16mm and is taken out
Core rivet eyelet (11), and calcium silicate board (1) central region and be drilled with corresponding to lightgage steel joist frame position
Central region self-plugging rivet eyelet (12), then by self-plugging rivet by the front side of calcium silicate board (1) and lightgage steel joist skeleton (2)
It is fixed, the rear side of calcium silicate board (1) and lightgage steel joist skeleton (2) is fixed in the same manner after the fixation of front side is completed,
In the fixation procedure of calcium silicate board (1), by the edge of the short side direction of calcium silicate board (1) and the calcium silicate board piece
Reinforcement keel (25) are corresponding, and the short side piece (13) of the short side direction of the calcium silicate board (1) in the adjacent columns of left and right two
Position mutually stagger, and the long side piece (14) of the long side direction of the calcium silicate board (1) in the adjacent columns of left and right two is right each other
Should;
C) surface layer is covered with paint, lacquer, colour wash, etc., first to step B)Described short side piece (13) and long side piece (14) are filled using anticracking grout,
Again corresponding to short side piece (13) and long side piece (14) place's bandage reinforcement, then to the calcium silicate board (1)
Surface is covered with paint, lacquer, colour wash, etc., and obtains calcium silicate board partition wall.
2. the construction method of calcium silicate board partition wall according to claim 1, it is characterised in that in step A)Described in it is perpendicular
It is 300mm or 400mm to the spacing of keel (23), described vertical keel (23) itself carries punching keel resigning hole (231),
The position of the punching keel resigning hole (231) on vertical keel (23) is corresponding with described horizontal punching keel (24)
, the horizontal punching keel (24) are through vertical keel punching keel resigning hole (231) and with being allowed for forming punching keel
The punching keel resigning hole transfer blade (2311) in position hole (231) is fixed.
3. the construction method of calcium silicate board partition wall according to claim 1 or 2, it is characterised in that in described vertical keel
(23) restriction inserted sheet (232) is embedded with and in the position of the top corresponding to the horizontal punching keel (24).
4. the construction method of calcium silicate board partition wall according to claim 3, it is characterised in that in the restriction inserted sheet (232)
Two ends be respectively formed with an inserted sheet pinch (2321) and a pair of clip slots (2322), and formed in the bottom for limiting inserted sheet (232)
Have a punching keel limit groove (2323), a pair of clip slots (2322) correspond respectively to the upper and lower sides of inserted sheet pinch (2321) and with
Described vertical keel (23) scarf, inserted sheet pinch (2321) is clamped on vertical keel (23), and punching keel limit groove
(2323) it is engaged with horizontal punching keel (24).
5. the construction method of calcium silicate board partition wall according to claim 1, it is characterised in that in step A)Described in silicon
There is reinforcement keel connecting plate (251) at the two ends that sour calcium plate piece strengthens keel (25) towards each constitute in upper side, reinforcement dragon
It is perpendicular and fixed with described vertical keel (23) that bone connecting plate (251) strengthens keel (25) with calcium silicate board piece.
6. the construction method of calcium silicate board partition wall according to claim 1, it is characterised in that step B)Described in calcium silicates
The spacing of plate border region self-plugging rivet eyelet (11) is the calcium silicate board central region self-plugging rivet eyelet less than 150mm
(12) spacing is less than 250mm.
7. the construction method of calcium silicate board partition wall according to claim 1, it is characterised in that step B)Described in short side
The gap width of piece (13) and long side piece (14) is identical.
8. the construction method of calcium silicate board partition wall according to claim 7, it is characterised in that described gap width is 3-
6mm。
9. the construction method of calcium silicate board partition wall according to claim 1, it is characterised in that step C)Described in cracking resistance
Mortar is made up of the following raw material matched by weight:It is 285-330 parts of cement, 530-570 parts of the quartz sand of 40-80 mesh, greasy
2.8-3.2 parts of sub- sizing material 20-30 parts, 110-130 parts of filler, 1.4-1.6 parts of HPMC celluloses and PP fibers;It is described to silicic acid
The surface of calcium plate (1) carries out covering with paint and refers to criticize putty to the surface of calcium silicate board (1).
10. the construction method of calcium silicate board partition wall according to claim 9, it is characterised in that added in described putty
There is glue.
Priority Applications (1)
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CN201710260087.XA CN107119909A (en) | 2017-04-20 | 2017-04-20 | The construction method of calcium silicate board partition wall |
Applications Claiming Priority (1)
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CN201710260087.XA CN107119909A (en) | 2017-04-20 | 2017-04-20 | The construction method of calcium silicate board partition wall |
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ID=59725847
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CN201710260087.XA Pending CN107119909A (en) | 2017-04-20 | 2017-04-20 | The construction method of calcium silicate board partition wall |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112482634A (en) * | 2020-12-04 | 2021-03-12 | 陕西天赟轩越科技有限公司 | Construction method for installing keel frame of building curtain wall |
CN112523394A (en) * | 2019-09-18 | 2021-03-19 | 杭州欧尔装饰工程有限公司 | Light steel keel partition wall |
CN115874737A (en) * | 2022-11-15 | 2023-03-31 | 北京达来特技术有限公司 | Flexibly-assembled external member of light steel keel wall and light steel keel wall |
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FR2925085A1 (en) * | 2007-12-13 | 2009-06-19 | Arnaud Marie Aleaume Lallemand | COMPLETE CONSTRUCTION SYSTEM FOR RAPID BUILDING ASSEMBLY, COMPRISING A BUILDING ELEMENT WITH ITS ACCESSORIES AND METHODS OF ASSEMBLING THE SAME |
CN102852251A (en) * | 2012-09-11 | 2013-01-02 | 苏州柯利达装饰股份有限公司 | Joggled light-weight partition |
CN103242006A (en) * | 2013-05-16 | 2013-08-14 | 安徽济峰节能材料有限公司 | Novel anti-crack mortar and preparation method thereof |
CN105507461A (en) * | 2015-12-31 | 2016-04-20 | 东莞市万科建筑技术研究有限公司 | Light steel keel foundation structure system of light partition wall and construction method |
CN106401024A (en) * | 2016-10-12 | 2017-02-15 | 上海市建筑装饰工程集团有限公司 | Cracking-preventing partition wall |
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FR2925085A1 (en) * | 2007-12-13 | 2009-06-19 | Arnaud Marie Aleaume Lallemand | COMPLETE CONSTRUCTION SYSTEM FOR RAPID BUILDING ASSEMBLY, COMPRISING A BUILDING ELEMENT WITH ITS ACCESSORIES AND METHODS OF ASSEMBLING THE SAME |
CN102852251A (en) * | 2012-09-11 | 2013-01-02 | 苏州柯利达装饰股份有限公司 | Joggled light-weight partition |
CN103242006A (en) * | 2013-05-16 | 2013-08-14 | 安徽济峰节能材料有限公司 | Novel anti-crack mortar and preparation method thereof |
CN105507461A (en) * | 2015-12-31 | 2016-04-20 | 东莞市万科建筑技术研究有限公司 | Light steel keel foundation structure system of light partition wall and construction method |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112523394A (en) * | 2019-09-18 | 2021-03-19 | 杭州欧尔装饰工程有限公司 | Light steel keel partition wall |
CN112482634A (en) * | 2020-12-04 | 2021-03-12 | 陕西天赟轩越科技有限公司 | Construction method for installing keel frame of building curtain wall |
CN115874737A (en) * | 2022-11-15 | 2023-03-31 | 北京达来特技术有限公司 | Flexibly-assembled external member of light steel keel wall and light steel keel wall |
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Application publication date: 20170901 |