CN105484391A - Construction method for manufacturing heat-preservation waterproof wall through light heat-preservation GRC disassembling-free formworks - Google Patents
Construction method for manufacturing heat-preservation waterproof wall through light heat-preservation GRC disassembling-free formworks Download PDFInfo
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- CN105484391A CN105484391A CN201510912745.XA CN201510912745A CN105484391A CN 105484391 A CN105484391 A CN 105484391A CN 201510912745 A CN201510912745 A CN 201510912745A CN 105484391 A CN105484391 A CN 105484391A
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- dismantling formwork
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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
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
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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
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2/8605—Walls made by casting, pouring, or tamping in situ made in permanent forms without spacers
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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
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2/8647—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties going through the forms
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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
- E04G21/14—Conveying or assembling building elements
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a construction method for manufacturing a heat-preservation waterproof wall through light heat-preservation GRC disassembling-free formworks. The construction method is characterized by including the following steps of 1, arranging and purchasing of the light heat-preservation GRC disassembling-free formworks; 2, site prefabrication of light heat-preservation GRC disassembling-free abnormal-shaped formworks; 3, cushion block binding; 4, installing of connecting pieces and stressed embedded parts; 5, lifting and fixing of the light heat-preservation GRC disassembling-free formworks; 6, installing of the light heat-preservation GRC disassembling-free formworks on the lateral sides of the wall, columns and beams; 7, installing of the light heat-preservation GRC disassembling-free formworks at the bottoms of the beams and the bottoms of plates; 8, sealing of gaps of the light heat-preservation GRC disassembling-free formworks; 9, concrete pouring; 10, maintaining; 11, disassembling of wood formworks and primary and secondary arrises; 12, plugging of split bolt holes; 13, anti-cracking treatment at abutted seams and internal and external corners; 14, smearing of a mortar layer on the outer surface; 15, laying of alkali-resisting glass fiber gridding cloth. According to the construction method, a cast-in-place concrete structure outer heat preservation layer and the cast-in-place formworks are integrated, the materials of the formworks and labor are greatly saved, and the construction method is widely applied to construction of concrete structure buildings.
Description
Technical field
The present invention relates to technical field of buildings, especially a kind of light thermal-insulation GRC non-dismantling formwork makes the construction method of thermal-insulating waterproof body of wall.
Background technology
Template is the important tool of cast-in-situ concrete structure construction, present stage multiplex wood, steel, plastic or other material be main, expense accounts for 30%-35% of cast-in-situ concrete structure cost, in engineering budget quota, maximum turnover number is 8 times, the reality work progress number of turnover mostly is 3-5 times, comparatively large to the demand of data, waste is serious.Form work engineering divides again the working procedure such as template construct, model sheetinstallat, form removable by construction technology, and amount of labour consumption is large, generally accounts for 40%-50% of cast-in-situ concrete structure construction recruitment.The insulation of the concrete structure exposed in architectural exterior-protecting construction is in addition one of the difficult problem around engineers and technicians always, mainly adopt extension (subsides) warming plate or whitewash the forms such as thermal insulation mortar at present, operation is more loaded down with trivial details, to consume a large amount of artificial simultaneously, long in time limit, construction cost improves, and heat insulation effect is also not ideal enough.
Summary of the invention
Object of the present invention will reduce working procedure exactly, the reduction of erection time, reduces building costs, improves wall thermal insulating water resistance, provides a kind of light thermal-insulation GRC non-dismantling formwork to make the construction method of thermal-insulating waterproof body of wall.
Concrete scheme of the present invention is: light thermal-insulation GRC non-dismantling formwork makes the construction method of thermal-insulating waterproof body of wall, it is characterized in that: comprise following processing step:
(1) row's plate of light thermal-insulation GRC non-dismantling formwork and buying, row's plate principle is: adopt the whole plate of large gauge as far as possible,
Reduce splicing; Be plate hight with story height within height dimension three meters, avoid carrying out level splicing at floor gap, only vertically splice; More than three meters, ensure that adjacent two pieces of transverse slat horizontal joints lap length that staggers is less than 1/3 of monolithic plate hight;
(2) light thermal-insulation GRC exempts to tear abnormal formwork site prefabrication open, first manufactures special-shaped loose tool, then gets the raw materials ready by standard light thermal-insulation GRC non-dismantling formwork formula, more prefabricated by following flow process:
A by quantitative iron tailings, glass fiber and part water add in mortar mixer stir 30 seconds;
The compound of preparation and appropriate exciting agent, expanding material, cementitious material are added stirrer for mixing and stir 60 seconds by b again;
C stirs adding in mixer after water and polycarboxylic acid series high efficiency water reducing agent mixing the material that is uniformly mixed, and the time is no less than 60 seconds;
D compound carries out vibration moulding after entering mould, maintenance to can piling, transport time, namely complete whole preparation process;
Should be clapped by hand punning after e concrete enters mould, covering curing form removal after 7 days, edge-on stacking natural curing to 28.
(3) cushion block colligation: after wall, post, beam steel are checked and accepted, colligation cushion block. wall, post, beam side cushion block spacing are pressed 80cm and are arranged, and beam, plate heelpiece interblock, apart from being 30cm-50cm, ensure thickness of protection tier; Cushion block uses mortar or concrete pad, in quincuncial arrangement.
(4) light thermal-insulation GRC non-dismantling formwork installation connecting element and force bearing embedded part
Connector refers to that strengthening GRC exempts to tear the special connecting piece of exterior sheathing with cast-in-situ concrete connection function open, adopt engineering plastics crab-bolt and metal screw, or when producing GRC non-dismantling formwork pre-buried iron wire, connector arranging every square metre and be no less than 5 in GRC non-dismantling formwork, even setting, connecting hole is no less than 100mm apart from light thermal-insulation GRC non-dismantling formwork edge, and connector is that installation is fixing complete before the lifting of light thermal-insulation GRC non-dismantling formwork;
Force bearing embedded part refers to as building curtain wall or other Accessory Members carry out connection function safely and effectively, be embedded in the special connecting piece at the positions such as cast-in-place concrete structure beam, post and wall in advance, GRC exempt to tear open exterior sheathing temporary fixed time install, final and steel bar stress iron wire colligation;
(5) light thermal-insulation GRC non-dismantling formwork lifts and fixes
Adopt hanging belt to tie up to lift at plate hight 1/3 place during individual plates lifting, precalculated position is placed in after lifting, first coarse localization, then after adjusting and accurately locating, connector is connected with the anchoring filament colligation of wall column beam steel, after accurately locating Deng the template in other faces, by split bolt by all template secured relation together;
(6) the installation of the light thermal-insulation GRC non-dismantling formwork of wall, post, beam sides
The support of this kind of light thermal-insulation GRC non-dismantling formwork is made up of secondary stupefied steel pipe or flitch, be made up of steel pipe main stupefied, and establish interior wooden form by split bolt or stirrup fixation, the exterior sheathing drawknot that split bolt is applicable to shear wall is fixed, spacing 50cm in length and breadth.Secondary stupefied flitch is of a size of 50mm × 100mm or 50mm × 80mm, secondary stupefied center distance is not more than the steel pipe of 120mm. master's stupefied employing Φ 48 × 3.5mm, the main stupefied flooring of distance is bottom not more than 150mm, vertical spacing is 30cm-45cm, the edge joint position that light thermal-insulation GRC exempts to tear open exterior sheathing uses mortar, adhesive tape close or use sponge strip jam-pack, spillage when avoiding concreting;
During the GRC non-dismantling formwork of beam fixing, steel pipe is adopted to be fixed by scaffold;
(7) the installation of light thermal-insulation GRC non-dismantling formwork bottom beam, plate
First lay the support flitch of floor, flitch specification selects 50mm × 100mm or 50mm × 80mm, and secondary stupefied center distance is not more than 120mm, secondary stupefied on establish wooden splint template backing again; Then lay the GRC non-dismantling formwork of beam and floor, form concrete cast die cavity, during the splicing of GRC non-dismantling formwork, use main specification as far as possible, reduce splicing gap, will carry out the fissure of displacement during splicing, lap length is no less than 1/3, suitably padded when GRC non-dismantling formwork is laid, make floor arch camber 0.1%-0.5%;
(8) light thermal-insulation GRC non-dismantling formwork shut seam
Adopt cement mortar to smear seam, between plate and plate, adopt steel wire to be socketed by connector, ensure globality, avoid template to run;
(9) concreting
Build front moistening GRC non-dismantling formwork of sprinkling water in a small amount, to concrete casting type intra-bladder instillation concrete, adopt vibrating spear to keep being no less than 10cm from GRC non-dismantling formwork to vibrate, when building vibration, send special messenger to carry out observation GRC non-dismantling formwork, find to carry out consolidation process in time when running mode ship slurry;
(10) maintenance;
Remove wooden splint template and primary and secondary stupefied;
(12) the shutoff in split bolt hole
Insulating sections adopts polyurathamc to tamp, wall part expansive cement or to add the cement mortar shutoff of expansion agent closely knit;
(13) piece and the cracking resistance process of negative and positive angle place
Light thermal-insulation GRC non-dismantling formwork edge joint position, negative and positive angle and with self-heat conserving masonry intersection, adopt polymer mortar to smear pressure and squeegee levelling, and lay the wide alkali resistant glass fibre open weave cloth of 200mm, strengthen Crack Resistance;
(14) to wipe one's face the thick screed of 20mm at light thermal-insulation GRC non-dismantling formwork external surface;
(15) lay alkali resistant glass fibre open weave cloth outward at screed.
In the present invention, the specification of selecting of light thermal-insulation GRC non-dismantling formwork is 600mm × 1200mm, 600mm × 2400mm, 600mm × 3000mm, thickness 20 ~ 70mm.
Cause damaged light thermal-insulation GRC non-dismantling formwork to repair in transport work progress in the present invention, 0.2m is less than for losing angle phenomenon and damaged area
2plate, remove damaged portion, repair with thermal insulation mortar, and the every limit of double faced adhesive fiberglass gridding cloth extend through damage line is no less than 100mm; As damaged portion 0.2m
2plate or the plate cutting machine that splits off excise damaged portion, change small size plate into and come into operation again.
When in the present invention, light thermal-insulation GRC non-dismantling formwork is installed, in outside by being no less than two people's coordinating operations.
In the present invention lightweight heat-proof GRC non-dismantling formwork construction scaffolding set up and security protection, scaffold preloading requirement with general template construction, but external scaffolding remove time should forbid collide wall face.
Design principle of the present invention is: be permanent exterior sheathing with light thermal-insulation GRC non-dismantling formwork during exterior wall structure of reinforced concrete, its reinforcement means is similar to common templates reinforcement means, concreting in template.Permanent insulation exterior sheathing, replaces the insulation layer of exterior wall reinforced concrete structure, making cement sand finish layer and finish coat outside heat insulation formwork simultaneously.Be cement between heat insulation formwork with exterior wall reinforced concrete structure to glue together and expect together with natural combination, and exempt from light thermal-insulation GRC to tear open by pre-buried iron wire or plastics Welded-Stud Conectors the insulation construction system that exterior sheathing and concrete strengthening link together and formed.
The present invention has the following advantages:
1), light thermal-insulation GRC non-dismantling formwork can replace the template of the materials such as reinforced concrete structure alien invasion, wood, clamping plate steel, and be undertaken processing and installing by the mounting method of wooden form, and constructing operation is convenient.
2), light thermal-insulation GRC non-dismantling formwork and concrete structure interface rough surface, have good bonding force with concrete structure, in conjunction with firmly.There is close deformability cracking resistance peel good with concrete structure; The another side of template is bright and clean closely knit, has good waterproof and weatherability.
3), light thermal-insulation GRC non-dismantling formwork construction method is similar to FS non-dismantling formwork with installation node.Light thermal-insulation GRC non-dismantling formwork is determined to select 20mm ~ 70mm different-thickness by exterior-wall heat insulation design standard.
4), light thermal-insulation GRC non-dismantling formwork do not remove after Concrete In Structures has been built, and plays the effect of external wall insulating layer; No longer need concrete structure outer insulation layer installation operation, save adhesives and installation expense.
5) construction period shortens, and reduces building costs, improves wall insulation performance.
Accompanying drawing explanation
Fig. 1 is the heat-preserving wall basic structure schematic diagram of application the inventive method construction;
Fig. 2 is the inner corner trim wall body structure schematic diagram of application the inventive method construction;
Fig. 3 is the external corner wall body structure schematic diagram of application the inventive method construction;
Fig. 4 is the window part structural representation of application the inventive method construction;
Fig. 5 adopts the inventive method construction side column model sheetinstallat schematic front view;
Fig. 6 adopts the inventive method construction side column model sheetinstallat schematic top plan view;
Fig. 7 adopts the inventive method construction beam, template die plate scheme of installation.
In figure: 1-concrete wall, 2-light thermal-insulation GRC non-dismantling formwork, 3-screed, 4-alkali resistant glass fibre open weave cloth, 5-connector, 6-heat preservation slurry, 7-window frame, 8-steel pipe, 9-flitch, 10-wooden splint template, 11-concrete cast die cavity.
Detailed description of the invention
The construction method that application the present invention builds thermal-insulating waterproof body of wall comprises following processing step: see Fig. 1, (1) light thermal-insulation GRC exempts from row's plate and the buying of form removal 2, and row's plate principle is: adopt the whole plate of large gauge as far as possible, reduce splicing; Be plate hight with story height within height dimension three meters, avoid carrying out level splicing at floor gap, only vertically splice; More than three meters, ensure that adjacent two pieces of transverse slat horizontal joints lap length that staggers is less than 1/3 of monolithic plate hight;
(2) light thermal-insulation GRC exempts to tear abnormal formwork site prefabrication open, first manufactures special-shaped loose tool, then by standard
Light thermal-insulation GRC non-dismantling formwork formula is got the raw materials ready, more prefabricated by following flow process:
A by quantitative iron tailings, glass fiber and part water add in mortar mixer stir 30 seconds;
The compound of preparation and appropriate exciting agent, expanding material, cementitious material are added stirrer for mixing and stir 60 seconds by b again;
C stirs adding in mixer after water and polycarboxylic acid series high efficiency water reducing agent mixing the material that is uniformly mixed, and the time is no less than 60 seconds;
D compound carries out vibration moulding after entering mould, maintenance to can piling, transport time, namely complete whole preparation process;
Should be clapped by hand punning after e concrete enters mould, covering curing form removal after 7 days, edge-on stacking natural curing to 28.
(3) cushion block colligation: after wall, post, beam steel are checked and accepted, colligation cushion block. wall, post, beam side cushion block spacing should be arranged by 80cm, and beam, plate heelpiece block spacing should be preferably 30cm-50cm, ensure thickness of protection tier.Cushion block should use mortar or concrete pad, quincuncial arrangement, and cushion block should not adopt plastic clip cushion block, and main cause is that to exempt to tear open the case hardness of exterior sheathing not enough due to GRC, if with plastic clip, be easily absorbed in GRC and exempt to tear open in exterior sheathing, is difficult to ensure protective layer thickness.According to plastic cushion, then the position that cushion block exempts to tear open exterior sheathing contact with GRC should adopt disc.
(4) light thermal-insulation GRC non-dismantling formwork installation connecting element and force bearing embedded part
Connector refers to that strengthening GRC exempts to tear the special connecting piece 5 of exterior sheathing with cast-in-situ concrete connection function open, is generally engineering plastics crab-bolt and metal screw, also can be the iron wire etc. pre-buried when producing GRC non-dismantling formwork.For at utmost reducing heat bridge impact, connector should adopt engineering plastics crab-bolt.The tensile strength of engineering plastics crab-bolt is general higher, can reach more than 0.5KN.But flexural strength and the shear strength of single engineering plastics crab-bolt are lower, be difficult to bear the moment of flexure that GRC exempts to tear open the deadweight generation of exterior sheathing.Connector arranging every square metre and be no less than 5 in GRC non-dismantling formwork, should more evenly be arranged, and connecting hole is no less than 100mm apart from GRC non-dismantling formwork edge and is advisable.Connector should be installed fixing complete before the lifting of GRC non-dismantling formwork.
Force bearing embedded part refers to as building curtain wall or other Accessory Members carry out connection function safely and effectively, is embedded in the special connecting piece at the positions such as cast-in-place concrete structure beam, post and wall in advance, according to circumstances arranges.Force bearing embedded part should determine size through calculating, and should do preservative treatment.Because force bearing embedded part stock size is comparatively large, should GRC exempt to tear open exterior sheathing temporary fixed time install, finally will with the colligation of steel bar stress iron wire.
(5) light thermal-insulation GRC non-dismantling formwork lifts and fixes
The appropriate to the occasion hanging belt of individual plates lifting is tied up and is lifted at plate hight 1/3 place.Precalculated position is placed in, first coarse localization after preferably lifting by crane with artificial carrying and installation GRC non-dismantling formwork 2.Then, after adjusting and accurately locating, connector is connected with the anchoring filament colligation of wall column beam steel.After accurately locating Deng the template in other faces, by split bolt by all face die plate secured relation together.The GRC non-dismantling formwork completing construction is forbidden bearing working load.
(6) the installation of wall, post, beam side GRC non-dismantling formwork 2
The support of GRC non-dismantling formwork 2 is made up of secondary stupefied steel pipe 8 or flitch 9, be made up of main stupefied (see Fig. 5,6) steel pipe 8, by split bolt or stirrup fixation, the GRC that split bolt is applicable to shear wall exempts to tear exterior sheathing drawknot open and fixes, about spacing 50cm in length and breadth.The size of secondary stupefied flitch 9 is preferably 50mm × 100mm or 50mm × 80mm, and secondary stupefied center distance is not more than the stupefied steel pipe 8 of Φ 48 × 3.5mm that should adopt of 120mm. master as main stupefied.Main is stupefiedly not more than 150mm apart from flooring bottom, vertical spacing is preferably 30cm-45cm, near suitable for reading can be larger.The edge joint position application mortar of GRC non-dismantling formwork, adhesive tape are closed or are used sponge strip jam-pack, spillage when avoiding concreting.
During the GRC non-dismantling formwork of beam fixing, should not split bolt be adopted, steel pipe should be adopted to be fixed by scaffold etc.
(7) bottom beam, plate, GRC non-dismantling formwork 2 is installed
Construction process
Build form bracing steel pipe frame → support flitch → laying beam sides and floor (not heating basement roof) GRC to exempt to tear open exterior sheathing → plate and seam and close → colligation plate and beam steel → concreting → supporting removal.
Concrete grammar is:
First lay the support flitch 9 of floor, be preferably 50mm × 100mm or 50mm × 80mm, secondary stupefied center distance is not more than 120mm.Or secondary stupefied press 300-400mm arrange, secondary stupefied on establish wooden splint template 10 backing again, see Fig. 7.
Then the GRC non-dismantling formwork laying beam and floor forms when concrete cast die cavity 11, GRC non-dismantling formwork splices should use main specification as far as possible, reduces splicing gap.Should carry out the fissure of displacement during splicing, lap length is no less than 1/3, should avoid occurring straight joint.Should be suitably padded when GRC non-dismantling formwork is laid, make floor arch camber 0.1%-0.5%.
(8) GRC non-dismantling formwork shut seam
Be finally that GRC exempts to tear exterior sheathing shut seam open, plate seam application cement mortar smears seam, should not adopt rubber belt sealing.Although use adhesive tape to avoid spillage, affect GRC and exempt to tear the bonding of exterior sheathing with concrete floor open.With steel wire, connector is socketed between plate, the globality of guarantee.Template is avoided to run.
(9) concreting
Should to sprinkle water in a small amount before building moistening GRC non-dismantling formwork.GRC non-dismantling formwork surface is wrapped up by adhesive mortar, and external surface can bear the impact force of 10J, but the most Gao Shineng of the vibration force of concrete vibration bar reaches 4000N, therefore, forbids that directly vibrating GRC exempts to tear exterior sheathing open during concreting.The oscillation distances of vibrating spear is about 40cm, therefore should be no less than from GRC non-dismantling formwork and vibrate in 10cm, is enough to ensure vibratory compaction degree.Special messenger should be sent when building vibration to carry out observation GRC non-dismantling formwork, find to carry out consolidation process in time when running mode ship slurry, build rear formation concrete wall 1.
(10) the maintenance of concrete;
Application GRC exempts from the concrete wall 1 tearing exterior sheathing construction open, and maintenance process is identical with the concrete that common templates is constructed.
(11) remove wooden splint template 10 and the stupefied steel pipe B of primary and secondary and flitch 9;
(12) the shutoff in split bolt hole;
Fixing GRC produces a large amount of split bolt hole when exempting to tear exterior sheathing open, whether the shutoff in split bolt hole is tight, has material impact for preventing wall leakage and heat-insulating property.The feature of this body of wall, outside is insulation, and inside is load bearing concrete wall, and therefore, insulating sections should adopt polyurathamc to tamp, wall part expansive cement or to add the cement mortar shutoff of expansion agent closely knit.So both can seal tight, and have and can ensure heat-insulating property.
(13) piece and the cracking resistance process of negative and positive angle place
GRC non-dismantling formwork edge joint position, negative and positive angle and with self-heat conserving masonry intersection, using polymer mortar is smeared pressure and is squeegeeed levelling, and lays the wide alkali resistant glass fibre open weave cloth of 200mm, strengthen Crack Resistance, see Fig. 2, Fig. 3.The junction of concrete wall 1 with window frame 7 is processed see Fig. 4, should add and put heat preservation slurry 6.
(14) to wipe one's face the thick screed 3 of 20mm at light thermal-insulation GRC non-dismantling formwork external surface;
(15) lay alkali resistant glass fibre open weave cloth 4 outward at screed.
In the present embodiment, the specification of selecting of light thermal-insulation GRC non-dismantling formwork is 600mm × 1200mm, 600mm × 2400mm, 600mm × 3000mm, thickness 20 ~ 70mm.
Cause damaged light thermal-insulation GRC non-dismantling formwork to repair in transport work progress in the present embodiment, 0.2m is less than for losing angle phenomenon and damaged area
2plate, remove damaged portion, repair with thermal insulation mortar, and the every limit of double faced adhesive fiberglass gridding cloth extend through damage line is no less than 100mm; As damaged portion 0.2m
2plate or the plate cutting machine that splits off excise damaged portion, change small size plate into and come into operation again.
When in the present embodiment, light thermal-insulation GRC non-dismantling formwork is installed, in outside by being no less than two people's coordinating operations.
In the present embodiment lightweight heat-proof GRC non-dismantling formwork construction scaffolding set up and security protection, scaffold preloading requirement with general template construction, but external scaffolding remove time should forbid collide wall face.
Claims (5)
1. light thermal-insulation GRC non-dismantling formwork makes the construction method of thermal-insulating waterproof body of wall, it is characterized in that: comprise following processing step:
(1) row's plate of light thermal-insulation GRC non-dismantling formwork and buying, row's plate principle is: adopt the whole plate of large gauge as far as possible, reduce splicing; Be plate hight with story height within height dimension three meters, avoid carrying out level splicing at floor gap, only vertically splice; More than three meters, ensure that adjacent two pieces of transverse slat horizontal joints lap length that staggers is less than 1/3 of monolithic plate hight;
(2) light thermal-insulation GRC exempts to tear abnormal formwork site prefabrication open, first manufactures special-shaped loose tool, then gets the raw materials ready by standard light thermal-insulation GRC non-dismantling formwork formula, more prefabricated by following flow process:
A by quantitative iron tailings, glass fiber and part water add in mortar mixer stir 30 seconds;
The compound of preparation and appropriate exciting agent, expanding material, cementitious material are added stirrer for mixing and stir 60 seconds by b again;
C stirs adding in mixer after water and polycarboxylic acid series high efficiency water reducing agent mixing the material that is uniformly mixed, and the time is no less than 60 seconds;
D compound carries out vibration moulding after entering mould, maintenance to can piling, transport time, namely complete whole preparation process;
Should be clapped by hand punning after e concrete enters mould, covering curing form removal after 7 days, edge-on stacking natural curing to 28;
(3) cushion block colligation: after wall, post, beam steel are checked and accepted, colligation cushion block. wall, post, beam side cushion block spacing are pressed 80cm and are arranged, and beam, plate heelpiece interblock, apart from being 30cm-50cm, ensure thickness of protection tier; Cushion block uses mortar or concrete pad, in quincuncial arrangement;
(4) light thermal-insulation GRC non-dismantling formwork installation connecting element and force bearing embedded part
Connector refers to that strengthening GRC exempts to tear the special connecting piece of exterior sheathing with cast-in-situ concrete connection function open, adopt engineering plastics crab-bolt and metal screw, or when producing GRC non-dismantling formwork pre-buried iron wire, connector arranging every square metre and be no less than 5 in GRC non-dismantling formwork, even setting, connecting hole is no less than 100mm apart from light thermal-insulation GRC non-dismantling formwork edge;
Connector is that installation is fixing complete before the lifting of light thermal-insulation GRC non-dismantling formwork;
Force bearing embedded part refers to as building curtain wall or other Accessory Members carry out connection function safely and effectively, be embedded in the special connecting piece at the positions such as cast-in-place concrete structure beam, post and wall in advance, GRC exempt to tear open exterior sheathing temporary fixed time install, final and steel bar stress iron wire colligation;
(5) light thermal-insulation GRC non-dismantling formwork lifts and fixes
Adopt hanging belt to tie up to lift at plate hight 1/3 place during individual plates lifting, precalculated position is placed in after lifting, first coarse localization, then after adjusting and accurately locating, connector is connected with the anchoring filament colligation of wall column beam steel, after accurately locating Deng the template in other faces, by split bolt by all template secured relation together;
(6) the installation of the light thermal-insulation GRC non-dismantling formwork of wall, post, beam sides
The support of this kind of light thermal-insulation GRC non-dismantling formwork is made up of secondary stupefied steel pipe or flitch, be made up of steel pipe main stupefied, and establish interior wooden form by split bolt or stirrup fixation, the exterior sheathing drawknot that split bolt is applicable to shear wall is fixed, spacing 50cm in length and breadth;
Secondary stupefied flitch is of a size of 50mm × 100mm or 50mm × 80mm, secondary stupefied center distance is not more than the steel pipe of 120mm. master's stupefied employing Φ 48 × 3.5mm, the main stupefied flooring of distance is bottom not more than 150mm, vertical spacing is 30cm-45cm, the edge joint position that light thermal-insulation GRC exempts to tear open exterior sheathing uses mortar, adhesive tape close or use sponge strip jam-pack, spillage when avoiding concreting;
During the GRC non-dismantling formwork of beam fixing, steel pipe is adopted to be fixed by scaffold;
(7) the installation of light thermal-insulation GRC non-dismantling formwork bottom beam, plate
First lay the support flitch of floor, flitch specification selects 50mm × 100mm or 50mm × 80mm, and secondary stupefied center distance is not more than 120mm, secondary stupefied on establish wooden splint template backing again; Then the GRC non-dismantling formwork laying beam and floor forms concrete cast die cavity, uses main specification as far as possible, reduce splicing gap during the splicing of GRC non-dismantling formwork, the fissure of displacement will be carried out during splicing, lap length is no less than when 1/3, GRC non-dismantling formwork is laid suitably padded, makes floor arch camber 0.1%-0.5%;
(8) light thermal-insulation GRC non-dismantling formwork shut seam
Adopt cement mortar to smear seam, between plate and plate, adopt steel wire to be socketed by connector, ensure globality, avoid template to run;
(9) concreting
Build front moistening GRC non-dismantling formwork of sprinkling water in a small amount, to concrete casting type intra-bladder instillation concrete, adopt vibrating spear to keep being no less than 10cm from GRC non-dismantling formwork to vibrate, when building vibration, send special messenger to carry out observation GRC non-dismantling formwork, find to carry out consolidation process in time when running mode ship slurry;
(10) maintenance
Remove wooden splint template and primary and secondary stupefied;
(12) the shutoff in split bolt hole
Insulating sections adopts polyurathamc to tamp, wall part expansive cement or to add the cement mortar shutoff of expansion agent closely knit;
(13) piece and the cracking resistance process of negative and positive angle place
Light thermal-insulation GRC non-dismantling formwork edge joint position, negative and positive angle and with self-heat conserving masonry intersection, adopt polymer mortar to smear pressure and squeegee levelling, and lay the wide alkali resistant glass fibre open weave cloth of 200mm, strengthen Crack Resistance;
(14) to wipe one's face the thick screed of 20mm at light thermal-insulation GRC non-dismantling formwork external surface;
(15) lay alkali resistant glass fibre open weave cloth outward at screed.
2. light thermal-insulation GRC non-dismantling formwork according to claim 1 makes the construction method of thermal-insulating waterproof body of wall, it is characterized in that: the specification of selecting of light thermal-insulation GRC non-dismantling formwork is 600mm × 1200mm, 600mm × 2400mm, 600mm × 3000mm, thickness 20 ~ 70mm.
3. light thermal-insulation GRC non-dismantling formwork according to claim 1 makes the construction method of thermal-insulating waterproof body of wall, it is characterized in that: cause damaged light thermal-insulation GRC non-dismantling formwork to repair in transport work progress, 0.2m is less than for losing angle phenomenon and damaged area
2plate, remove damaged portion, repair with thermal insulation mortar, and the every limit of double faced adhesive fiberglass gridding cloth extend through damage line is no less than 100mm; As damaged portion 0.2m
2plate or the plate cutting machine that splits off excise damaged portion, change small size plate into and come into operation again.
4. light thermal-insulation GRC non-dismantling formwork according to claim 1 makes the construction method of thermal-insulating waterproof body of wall, it is characterized in that: when light thermal-insulation GRC non-dismantling formwork is installed, in outside by being no less than two people's coordinating operations.
5. light thermal-insulation GRC non-dismantling formwork according to claim 1 makes the construction method of thermal-insulating waterproof body of wall, it is characterized in that: lightweight heat-proof GRC non-dismantling formwork construction scaffolding sets up and security protection, scaffold preloading requirement with general template construction, but external scaffolding remove time should forbid collide wall face.
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Application publication date: 20160413 |