CN110080454A - LPM light filling body Construction of Cast-in-situ Concrete Hollow - Google Patents
LPM light filling body Construction of Cast-in-situ Concrete Hollow Download PDFInfo
- Publication number
- CN110080454A CN110080454A CN201910468303.9A CN201910468303A CN110080454A CN 110080454 A CN110080454 A CN 110080454A CN 201910468303 A CN201910468303 A CN 201910468303A CN 110080454 A CN110080454 A CN 110080454A
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- Prior art keywords
- concrete
- floating
- construction
- reinforcing bar
- light filling
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- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C1/00—Building elements of block or other shape for the construction of parts of buildings
- E04C1/24—Elements for building-up floors, ceilings, roofs, arches, or beams
- E04C1/34—Elements for building-up floors, ceilings, roofs, arches, or beams designed for use as filling elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C1/00—Building elements of block or other shape for the construction of parts of buildings
- E04C1/40—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts
-
- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
-
- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
Abstract
The invention discloses a kind of LPM light filling body Construction of Cast-in-situ Concrete Hollow, after the completion of installing board bottom template, board bottom and the installation of dark rib beam steel bar colligation cushion block, anti-floating drilling, board bottom and rib beam steel bar colligation, send special messenger to punch in bottom plate according to anti-floating cloth point diagram, water is installed, electric line, handling LPM light filling part, placement filling member, the binding of plate face reinforcing bar, the reinforcing of filling member anti-floating iron wire, casting concrete, maintenance and demoulding.Present invention process is simple, easy for construction, easily operated；This technology is used in suitable structure, while guaranteeing construction quality, is also had the characteristics that concrete amount is few, space is big, dead load is light, geological process power is small, the heat-insulated of structure, sound insulation property is good, is shortened the construction period.
Description
Technical field
The present invention relates to a kind of LPM light filling body Construction of Cast-in-situ Concrete Hollow.
Background technique
In modern architecture, wideling popularize green construction is the grand strategy for solving china natural resources energy problem.But it is existing
Construction of Cast-in-situ Concrete Hollow is not able to satisfy the requirement of green construction, needs further to be improved.
Summary of the invention
The purpose of the present invention is to provide a kind of simple process, easy for construction, easily operated LPM light filling embodiment is poured
Concrete hollow building roof construction method.
The technical solution of the invention is as follows:
A kind of LPM light filling body Construction of Cast-in-situ Concrete Hollow, it is characterized in that: the LPM light filling
Body is with self-extinguishment flame-retarded light porous material-polyphenyl foam for filling main material, in addition reinforcement and separation layer；Isolation is wrapped up in outside main material
The surface setting enhancement layer of layer protection and waterproof action, top or bottom is to resist construction and anti-floating load；
Construction method includes the following steps:
(1) board bottom template is installed
The end template of hollow floor use 15mm multi-layer board, secondary joist 40mm × 90mm flitch, main joist with 48mm ×
The double steel pipe of 3.2mm, support use fastener type steel pipe scaffold system, and full hall scaffold upright bar is equipped with adjustable jack；
When span of slab >=4m, top plate palpus arch camber, springing height is the 2/1000-3/1000 (20mm) of full span length's degree；Formwork erection is completed
It leads jug hustler that the position of concealed beam and filling member is released according to design drawing by builder afterwards, makes which construction personnel understands
Position is obturator arrangement area, which position is solid main rib；Subsequent construction is carried out again；
(2) board bottom and the installation of dark rib beam steel bar colligation cushion block, anti-floating drilling
According to the position that setting-out determines, board bottom main reinforcement, distributing reinforcement spacing, by the straight of design drawing reinforcing bar are pulled in template
Diameter and spacing, long short sequence, bind board bottom and dark girt strip reinforcing bar；Mounting plate bottom, dark girt strip bottom spacer after the completion of binding,
Cushion block quantity must not be less than two in every square metre, and the distance between two neighboring cushion block is not preferably greater than 60cm；
(3) after the completion of board bottom and rib beam steel bar colligation, special messenger is sent to punch in bottom plate according to anti-floating cloth point diagram, aperture
For 8-10mm；Each profession must carry out cooperation, accomplish to clear up sawdust in time after punching, when anti-floating control point drills, technical staff
It should be checked and be instructed, it is ensured that it is accurate, it avoids doing over again；
(4) water, electric line are installed
The technology communication between profession is carried out before water, electric professional construction, consults work, is reduced to the greatest extent and is destroyed light filling part；
Technical measures are as follows:
A, it is finished in plate formwork erection, examination, after the completion of board bottom and beam steel bar colligation, water, power technology personnel are according to profession
Piping in-depth figure be accurately positioned, determine comb unwrapping wire and pipe away from；Brick or concrete duct person, professional surveyor carry out cooperating；
B, the pipeline in cored slab should be laid in as far as possible smooth vertical and horizontally in the real rib of packing material, can not such as be implemented and be managed
When line and packing material position clash, can on packing material differential trench open, stay a channel to pipeline, then use plastics
Adhesive tape is to carrying out repairing reinforcement at packing material fluting；
(5) handling LPM light filling part
LPM light filling part is put entirety on the horizontal blanket net of white as requested, blanket net surrounding is simultaneously tied up securely,
Prevent high-altitude from falling object；The work surface of needs is hoisted to using the derrick crane of construction site；
(6) filling member, the binding of plate face reinforcing bar are placed
A, after board bottom, dark rib beam steel bar colligation and cushion block are installed, the position of beam uses double headed roller line, it is necessary to adjust one
On bar line, it is ensured that the thickness of beam two sides protective layer carries out an acceptance inspection through quality person, management, after acceptance(check), then is filled body
Placement is discharged into hollow zone position；
B, obturator placement is discharged into hollow zone position, and according to the requirement laying plate face reinforcing bar of design drawing, reinforcing bar is tied up
It is certain it is noted that the finished product protection to light filling part should be repaired in time if destroyed accidentally in construction when pricking construction.
(7) filling member anti-floating iron wire is reinforced
After the completion of the binding of filling member top bars, in order to ensure filling member does not occur floating situation in concreting,
Anti-floating reinforcement measure must be taken, requires reasonable Arrangement anti-floating control point according to technical solution, control point is generally located at girt strip,
According to rectangle or quincuncial arrangement, when buoyancy is bigger, control point is also added in light filling area；In any case, all
Guarantee to be no less than an anti-floating control point within the scope of each square metre；When fixed anti-floating control point, 16# iron wire is first passed through into mould
Reinforcement and support for shuttering are fixed plate, fixed point vertically and horizontally spacing≤800mm；Iron wire one end is past from hole in template
Under be pierced by, iron wire end is lived in wear back from hole after tying with the support system of template；By two ends of iron wire anti-
It is tightened at floating control point, each anti-floating point is fixed using bifilar iron wire；The top and bottom of obturator is both needed to setting cushion block,
It avoids upper and lower level reinforcing bar from directly contacting with obturator, leads to reduce concrete to the bond stress of reinforcing bar；
(8) casting concrete
Filling member installs, reinforcing bar binding is completed, and conscientiously checks in place each anti-floating fixed point, the hidden inspection of reinforcing bar
After qualification, fill in that reinforcing bar is hidden and light filling body installation inspection lot inspection of quality record can pour after checking that confirmation is qualified
Concrete；Slump >=150mm of concrete, maximum particle diameter≤25mm of coarse aggregate in concrete；Due to filling member self weight compared with
Gently, buoyancy is larger, when concreting, takes the mode of placement layer by layer, assigns special messenger's nurse, timely processing of finding the problem, when
When cored slab thickness h >=250mm, suitable casting concrete in two times, when h >=800mm, points 3 times；First by concreting to plate thickness
Vibrating spear is inserted into girt strip and carefully vibrates, vibrating spear should be avoided and directly contact with tube filler by place, to prevent from destroying cylinder
Core, must not leakage；After confirming that concrete vibrating is closely knit, i.e., concrete surface no longer declines or has seen from adjacent rib concrete
Underflow vibrated, then pour layer concrete；Crack is generated very much fastly in order to avoid concrete surface moisture is shunk, and is used
Wooden looking for flat or iron plate are covered with plastic film immediately after receiving light；
(9) maintenance and demoulding
A, concrete curing preferably uses plastic film to cover, and keeps concrete surface wet, and curing time is no less than 7 days,
There is the curing time of seepage resistance demand concrete to be no less than 14 days；
B, demoulding foundation
Form removable must declare the same condition of concrete using test cube in the same condition pressure testing result as foundation to management before demoulding
Curing test block Measurement Report strictly fulfils demoulding examination and approval procedures；Top plate, beam strength of mould stripping see the table below:
Concrete structure strength of mould stripping table
The present invention not only simple process, easy for construction, it is easily operated, this technology is used in suitable structure, is guaranteed
While construction quality, also have concrete amount is few, space is big, dead load is light, geological process power is small, structure it is heat-insulated,
Sound insulation property is good, the features such as shortening the construction period, thus can it is energy saving, reduce and build and use cost, to generate good warp
Ji benefit, energy conservation and environmental protection benefit and social benefit.
It is a kind of environmentally protective construction technology that LPM light filling, which embodies pouring concrete hollow slab floor structure, suitable
Structure in using after the technology, other than it can mitigate dead load and geological process, moreover it is possible to energy saving, reduce and build and make
Cost generates good economic benefit and social benefit.Compared with other hollow floors, LPM hollow floor in addition to sound insulation,
Except heat-proof quality is good, there are also following characteristics:
1, superstructure hollow rate is big, and hollow rate is about 65% or so, higher than conventional hollow superstructure by 10% or so；
2, facilitate the installation of pipeline, can slot on packing material or Durchgangshohle, pipeline installation are unrestricted；
3, packing material water absorption rate is small, and the separation layer outside light-weight body material is less than packing material water absorption rate
0.5%, so need not specially moisten cylinder, particularly convenient winter construction, smooth separation layer and concrete before casting concrete
Coefficient of friction is small, convenient for concrete flowing and pour closely knit.
4, packing material is light-weight and not cracky, and every square metre of LPM cylinder weight is only 3~12 ㎏, horizontal and vertical
Transport very convenient, and solid cylinder is elastic-plastic material, and not cracky is easy repairing.Its construction and installation is relatively easy.
5, speed of application is fast, and effect is good.
Especially suitable for tier building, skyscraper, underground garage and podium engineering.
Below with reference to embodiment, the invention will be further described.
Specific embodiment
A kind of LPM light filling body Construction of Cast-in-situ Concrete Hollow, the LPM light filling body is with self-extinguishment
Flame-retarded light porous material-polyphenyl foam is filling main material, in addition reinforcement and separation layer；Wrap up in outside main material separation layer rise protection with
The surface setting enhancement layer of waterproof action, top or bottom is to resist construction and anti-floating load；
Construction method includes the following steps:
(1) board bottom template is installed
The end template of hollow floor use 15mm multi-layer board, secondary joist 40mm × 90mm flitch, main joist with 48mm ×
The double steel pipe of 3.2mm, support use fastener type steel pipe scaffold system, and full hall scaffold upright bar is equipped with adjustable jack；
When span of slab >=4m, top plate palpus arch camber, springing height is the 2/1000-3/1000 (20mm) of full span length's degree；Formwork erection is completed
It leads jug hustler that the position of concealed beam and filling member is released according to design drawing by builder afterwards, makes which construction personnel understands
Position is obturator arrangement area, which position is solid main rib；Subsequent construction is carried out again；
(2) board bottom and the installation of dark rib beam steel bar colligation cushion block, anti-floating drilling
According to the position that setting-out determines, board bottom main reinforcement, distributing reinforcement spacing, by the straight of design drawing reinforcing bar are pulled in template
Diameter and spacing, long short sequence, bind board bottom and dark girt strip reinforcing bar；Mounting plate bottom, dark girt strip bottom spacer after the completion of binding,
Cushion block quantity must not be less than two in every square metre, and the distance between two neighboring cushion block is not preferably greater than 60cm；
(3) after the completion of board bottom and rib beam steel bar colligation, special messenger is sent to punch in bottom plate according to anti-floating cloth point diagram, aperture
For 8-10mm；Each profession must carry out cooperation, accomplish to clear up sawdust in time after punching, when anti-floating control point drills, technical staff
It should be checked and be instructed, it is ensured that it is accurate, it avoids doing over again；
(4) water, electric line are installed
The technology communication between profession is carried out before water, electric professional construction, consults work, is reduced to the greatest extent and is destroyed light filling part；
Technical measures are as follows:
A, it is finished in plate formwork erection, examination, after the completion of board bottom and beam steel bar colligation, water, power technology personnel are according to profession
Piping in-depth figure be accurately positioned, determine comb unwrapping wire and pipe away from；Brick or concrete duct person, professional surveyor carry out cooperating；
B, the pipeline in cored slab should be laid in as far as possible smooth vertical and horizontally in the real rib of packing material, can not such as be implemented and be managed
When line and packing material position clash, can on packing material differential trench open, stay a channel to pipeline, then use plastics
Adhesive tape is to carrying out repairing reinforcement at packing material fluting；
(5) handling LPM light filling part
LPM light filling part is put entirety on the horizontal blanket net of white as requested, blanket net surrounding is simultaneously tied up securely,
Prevent high-altitude from falling object；The work surface of needs is hoisted to using the derrick crane of construction site；
(6) filling member, the binding of plate face reinforcing bar are placed
A, after board bottom, dark rib beam steel bar colligation and cushion block are installed, the position of beam uses double headed roller line, it is necessary to adjust one
On bar line, it is ensured that the thickness of beam two sides protective layer carries out an acceptance inspection through quality person, management, after acceptance(check), then is filled body
Placement is discharged into hollow zone position；
B, obturator placement is discharged into hollow zone position, and according to the requirement laying plate face reinforcing bar of design drawing, reinforcing bar is tied up
It is certain it is noted that the finished product protection to light filling part should be repaired in time if destroyed accidentally in construction when pricking construction.
(7) filling member anti-floating iron wire is reinforced
After the completion of the binding of filling member top bars, in order to ensure filling member does not occur floating situation in concreting,
Anti-floating reinforcement measure must be taken, requires reasonable Arrangement anti-floating control point according to technical solution, control point is generally located at girt strip,
According to rectangle or quincuncial arrangement, when buoyancy is bigger, control point is also added in light filling area；In any case, all
Guarantee to be no less than an anti-floating control point within the scope of each square metre；When fixed anti-floating control point, 16# iron wire is first passed through into mould
Reinforcement and support for shuttering are fixed plate, fixed point vertically and horizontally spacing≤800mm；Iron wire one end is past from hole in template
Under be pierced by, iron wire end is lived in wear back from hole after tying with the support system of template；By two ends of iron wire anti-
It is tightened at floating control point, each anti-floating point is fixed using bifilar iron wire；The top and bottom of obturator is both needed to setting cushion block,
It avoids upper and lower level reinforcing bar from directly contacting with obturator, leads to reduce concrete to the bond stress of reinforcing bar；
(8) casting concrete
Filling member installs, reinforcing bar binding is completed, and conscientiously checks in place each anti-floating fixed point, the hidden inspection of reinforcing bar
After qualification, fill in that reinforcing bar is hidden and light filling body installation inspection lot inspection of quality record can pour after checking that confirmation is qualified
Concrete；Slump >=150mm of concrete, maximum particle diameter≤25mm of coarse aggregate in concrete；Due to filling member self weight compared with
Gently, buoyancy is larger, when concreting, takes the mode of placement layer by layer, assigns special messenger's nurse, timely processing of finding the problem, when
When cored slab thickness h >=250mm, suitable casting concrete in two times, when h >=800mm, points 3 times；First by concreting to plate thickness
Vibrating spear is inserted into girt strip and carefully vibrates, vibrating spear should be avoided and directly contact with tube filler by place, to prevent from destroying cylinder
Core, must not leakage；After confirming that concrete vibrating is closely knit, i.e., concrete surface no longer declines or has seen from adjacent rib concrete
Underflow vibrated, then pour layer concrete；Crack is generated very much fastly in order to avoid concrete surface moisture is shunk, and is used
Wooden looking for flat or iron plate are covered with plastic film immediately after receiving light；
(9) maintenance and demoulding
A, concrete curing preferably uses plastic film to cover, and keeps concrete surface wet, and curing time is no less than 7 days,
There is the curing time of seepage resistance demand concrete to be no less than 14 days；
B, demoulding foundation
Form removable must declare the same condition of concrete using test cube in the same condition pressure testing result as foundation to management before demoulding
Curing test block Measurement Report strictly fulfils demoulding examination and approval procedures；Top plate, beam strength of mould stripping see the table below:
Concrete structure strength of mould stripping table
Claims (1)
1. a kind of LPM light filling body Construction of Cast-in-situ Concrete Hollow, it is characterized in that: the LPM light filling body
It is with self-extinguishment flame-retarded light porous material-polyphenyl foam for filling main material, tyre reinforces and separation layer；Separation layer is wrapped up in outside main material
Protection and waterproof action are played, the surface setting enhancement layer of top or bottom is to resist construction and anti-floating load；
Construction method includes the following steps:
(1) board bottom template is installed
The end template of hollow floor uses 15mm multi-layer board, secondary joist 40mm × 90mm flitch, main joist 48mm × 3.2mm
Double steel pipe, support use fastener type steel pipe scaffold system, full hall scaffold upright bar be equipped with adjustable jack；Span of slab
When >=4m, top plate palpus arch camber, springing height is the 2/1000-3/1000 of full span length's degree；After the completion of formwork erection by builder with
Neck jug hustler releases the position of concealed beam and filling member according to design drawing, and construction personnel is made to understand which position is obturator
Arrange area, which position is solid main rib；Subsequent construction is carried out again；
(2) board bottom and the installation of dark rib beam steel bar colligation cushion block, anti-floating drilling
According to the position that setting-out determines, pull board bottom main reinforcement in template, distributing reinforcement spacing, by design drawing reinforcing bar diameter and
Spacing, long short sequence, bind board bottom and dark girt strip reinforcing bar；Mounting plate bottom, dark girt strip bottom spacer, often put down after the completion of binding
Cushion block quantity must not be less than two in square rice, and the distance between two neighboring cushion block is not preferably greater than 60cm；
(3) after the completion of board bottom and rib beam steel bar colligation, special messenger is sent to punch in bottom plate according to anti-floating cloth point diagram, aperture 8-
10mm；Each profession must carry out cooperation, accomplish to clear up sawdust in time after punching, and when anti-floating control point drills, technical staff should be into
Row checks and guidance, it is ensured that and it is accurate, it avoids doing over again；
(4) water, electric line are installed
The technology communication between profession is carried out before water, electric professional construction, consults work, is reduced to the greatest extent and is destroyed light filling part；Mainly
Technical measures are as follows:
A, it is finished in plate formwork erection, examination, after the completion of board bottom and beam steel bar colligation, water, power technology personnel are piped according to profession
In-depth figure be accurately positioned, determine comb unwrapping wire and pipe away from；Brick or concrete duct person, professional surveyor carry out cooperating；
B, the pipeline in cored slab should be laid in as far as possible smooth vertical and horizontally in the real rib of packing material, can not such as implement and pipeline with
When packing material position clashes, can on packing material differential trench open, stay a channel to pipeline, then use plastic adhesive tape
To carrying out repairing reinforcement at packing material fluting；
(5) handling LPM light filling part
LPM light filling part is put entirety on the horizontal blanket net of white as requested, blanket net surrounding is simultaneously tied up securely, is prevented
Fall object in high-altitude；The work surface of needs is hoisted to using the derrick crane of construction site；
(6) filling member, the binding of plate face reinforcing bar are placed
A, after board bottom, dark rib beam steel bar colligation and cushion block are installed, the position of beam uses double headed roller line, it is necessary to adjust in a line
On, it is ensured that the thickness of beam two sides protective layer carries out an acceptance inspection through quality person, management, after acceptance(check), then is filled the placement of body
It is discharged into hollow zone position；
B, obturator placement is discharged into hollow zone position, and according to the requirement laying plate face reinforcing bar of design drawing, reinforcing bar binding is applied
Working hour is certain it is noted that the finished product protection to light filling part should be repaired in time if destroyed accidentally in construction.
(7) filling member anti-floating iron wire is reinforced
After the completion of the binding of filling member top bars, in order to ensure filling member does not occur floating situation in concreting, it is necessary to
Anti-floating reinforcement measure to be taken, requires reasonable Arrangement anti-floating control point according to technical solution, control point is generally located at girt strip, according to
Rectangle or quincuncial arrangement will also add control point in light filling area when buoyancy is bigger；In any case, Dou Yaobao
It demonstrate,proves and is no less than an anti-floating control point within the scope of each square metre；It, first will across template by 16# iron wire when fixed anti-floating control point
Reinforcement is fixed with support for shuttering, fixed point vertically and horizontally spacing≤800mm；It is worn down from hole in template iron wire one end
Out, iron wire end is lived in wear back from hole after tying with the support system of template；By two ends of iron wire in anti-floating control
It is tightened at system point, each anti-floating point is fixed using bifilar iron wire；The top and bottom of obturator is both needed to setting cushion block, avoids
Upper and lower level reinforcing bar is directly contacted with obturator, leads to reduce concrete to the bond stress of reinforcing bar；
(8) casting concrete
Filling member installs, reinforcing bar binding is completed, and conscientiously checks in place each anti-floating fixed point, the hidden passed examination of reinforcing bar
Afterwards, fill in that reinforcing bar is hidden and light filling body installation inspection lot inspection of quality record can pour coagulation after checking that confirmation is qualified
Soil；Slump >=150mm of concrete, maximum particle diameter≤25mm of coarse aggregate in concrete；Since filling member self weight is lighter, floating
Power is larger, when concreting, takes the mode of placement layer by layer, assigns special messenger's nurse, and cored slab is worked as in timely processing of finding the problem
When thickness h >=250mm, suitable casting concrete in two times, when h >=800mm, points 3 times；First by concreting to plate thickness 1/3-
At 1/2, vibrating spear is inserted into girt strip and is carefully vibrated, vibrating spear should be avoided and directly contacted with tube filler, to prevent from destroying tube filler, no
Obtain leakage；After confirming that concrete vibrating is closely knit, i.e., concrete surface no longer declines or sees from adjacent rib the dense of concrete
Slurry is vibrated, then pours layer concrete；Crack is generated very much fastly in order to avoid concrete surface moisture is shunk, and use is wooden
Looking for flat or iron plate are covered with plastic film immediately after receiving light；
(9) maintenance and demoulding
A, concrete curing preferably uses plastic film to cover, and keeps concrete surface wet, curing time is no less than 7 days, is had anti-
Infiltration requires the curing time of concrete to be no less than 14 days；
B, demoulding foundation
Form removable must declare concrete cured under same condition using test cube in the same condition pressure testing result as foundation to management before demoulding
Intensity of test block report, strictly fulfils demoulding examination and approval procedures；Top plate, beam strength of mould stripping see the table below:
Concrete structure strength of mould stripping table
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910468303.9A CN110080454A (en) | 2019-05-31 | 2019-05-31 | LPM light filling body Construction of Cast-in-situ Concrete Hollow |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910468303.9A CN110080454A (en) | 2019-05-31 | 2019-05-31 | LPM light filling body Construction of Cast-in-situ Concrete Hollow |
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| CN110080454A true CN110080454A (en) | 2019-08-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309282A (en) * | 2021-06-11 | 2021-08-27 | 中电建十一局工程有限公司 | Hollow floor slab construction process |
| CN113622572A (en) * | 2021-08-19 | 2021-11-09 | 广东省第四建筑工程有限公司 | Hollow floor slab filling box fixing construction method |
| CN114908914A (en) * | 2022-05-20 | 2022-08-16 | 江苏国鹏建工集团有限公司 | Method for improving construction quality of EPS foam light filling body hollow floor |
| CN117286978A (en) * | 2023-11-24 | 2023-12-26 | 中铁二十二局集团轨道工程有限公司 | Construction process of prestressed hollow slab |
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| CN105442736A (en) * | 2015-12-03 | 2016-03-30 | 荣盛建设工程有限公司 | Anti-floating construction method for cast-in-place concrete hollow floor sectional type combined device |
| CN106088436A (en) * | 2016-06-12 | 2016-11-09 | 青岛海川建设集团有限公司 | BRT Lightweight core mould construction technology |
| KR101928315B1 (en) * | 2018-02-12 | 2018-12-12 | 우진에코텍 주식회사 | Construction Method by Using Double Welded Steel Mesh |
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| CN114908914A (en) * | 2022-05-20 | 2022-08-16 | 江苏国鹏建工集团有限公司 | Method for improving construction quality of EPS foam light filling body hollow floor |
| CN114908914B (en) * | 2022-05-20 | 2023-11-21 | 江苏国鹏建工集团有限公司 | Method for improving construction quality of EPS foam light filling body hollow floor system |
| CN117286978A (en) * | 2023-11-24 | 2023-12-26 | 中铁二十二局集团轨道工程有限公司 | Construction process of prestressed hollow slab |
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