CN107542170A - A kind of cast in situ ferroconcrete wall or beam construction joint surface construction method - Google Patents
A kind of cast in situ ferroconcrete wall or beam construction joint surface construction method Download PDFInfo
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- CN107542170A CN107542170A CN201611198348.1A CN201611198348A CN107542170A CN 107542170 A CN107542170 A CN 107542170A CN 201611198348 A CN201611198348 A CN 201611198348A CN 107542170 A CN107542170 A CN 107542170A
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Abstract
A kind of cast in situ ferroconcrete wall or beam construction joint surface construction method, it is poor to solve construction joint casting concrete associativity, causes hidden leakage defect, cut processing take a lot of work, the technical problem that cost is high, be the step of use：1. preparing retarder, retarder includes by weight：Glycerine 10~20%, kerosene 5~10%, the uniform stirring of ethanol 70~85% are into retarder.2. installing concrete walls or beam construction joint formwork, uniform smearing step 1 prepares retarder, is washed away at 3. pairs of fixed construction joints using pressure hydraulic giant, forms the exposed construction joint mat surface of coarse aggregate.Beneficial effect is, easy for construction, cost is cheap, one-time-concreting is firmly combined with secondary casting concrete and the concrete repeatedly poured, overcomes and repeatedly pours the hidden leakage defect brought.
Description
Technical field
The invention belongs to construction techniques, particularly a kind of cast in situ ferroconcrete wall or beam construction joint surface construction side
Method.
Background technology
The construction joint of reinforced concrete structure wall or beam is poured, is referred in concreting process, because of design requirement or is applied
Work technique needs the interval of indwelling to stitch, and construction joint both ends need to pour respectively（I.e. one-time-concreting, secondary pour or repeatedly pour）.
Before construction joint is in young concrete（It is secondary to pour）, it is necessary to shaggy frosting treatment is carried out, it is new and old to ensure（Once
Pour and poured with secondary）Concrete combine it is closely knit, prevent the common quality defects such as seepage.Reinforced concrete construction seam processing is common to be done
Method is after concrete reaches some strength.
Prior art is：It is mixed as first pouring by component surface feather plucking, or using fast-easy closing-up net using the method for picking chisel
The side form of soil is coagulated, using the oblique angle piece insertion concrete on its mesh, is formed and mechanically connected with the concrete first poured.
The shortcomings that prior art is：Using the method dabbing depth for picking chisel is limited, pollution is larger, reinforcing bar or built-in fitting are met too
When close, artificial chiseling difficulty is larger, not only wastes time and energy, and can cause concrete hidden defect.Using fast-easy closing-up net, due to
（It is secondary to pour）After-pouring concrete construction time and elder generation（One-time-concreting）Casting concrete interval time is longer, during which easily receives soon
Mouth net can not be combined very well by corrosion, one-time-concreting with secondary casting concrete, cause hidden leakage defect, therefore still to dig
Except processing, while using side form of the fast-easy closing-up net as first casting concrete, installation is more difficult, can produce during casting concrete
Raw spillage, it is difficult to clear up.
Goal of the invention
It can not very well be combined with secondary casting concrete to solve one-time-concreting, cause hidden leakage defect, therefore still to cut place
Reason, using side form of the fast-easy closing-up net as first casting concrete, installation is more difficult, can produce spillage during casting concrete,
It is difficult to the technical problem cleared up, the present invention discloses a kind of cast in situ ferroconcrete wall or beam construction joint surface construction method.
The present invention realizes that the method that goal of the invention uses is：A kind of cast in situ ferroconcrete wall or beam construction joint surface construction
Method, this method are realized by following steps：
Step 1. prepares retarder, and retarder includes by weight：Glycerine 10~20%, kerosene 5~10%, ethanol 70~85% are equal
It is even to stir into retarder.
Step 2. installs concrete walls or beam forms, construction joint formwork are sleeved on through secondary casting concrete wall or beam one end
Construction joint formwork is fixed on the reinforcing bar of concrete walls or beam simultaneously, in construction joint formwork and concrete surface, is uniformly smeared
Step 1 prepares retarder, first time casting concrete wall or beam.
Form removal after step 3. first time casting concrete wall or beam coagulation forming, to using pressure at fixed construction joint
Hydraulic giant is washed away, and slow setting cement in concrete is washed away into removal, forms the exposed construction joint mat surface of coarse aggregate.
The invention has the advantages that it is easy for construction, cost is cheap, one-time-concreting pours with secondary casting concrete and repeatedly
The concrete built is firmly combined with, and is overcome and is repeatedly poured the hidden leakage defect brought.
The present invention is described in detail below in conjunction with the accompanying drawings.
Accompanying drawing 1 is the schematic diagram of model sheetinstallat embodiment 1 of the present invention.
Accompanying drawing 2 is the A-A diagrammatic cross-sections of accompanying drawing 1.
Accompanying drawing 3 is the schematic diagram of model sheetinstallat embodiment 2 of the present invention.
Accompanying drawing 4 is the A-A diagrammatic cross-sections of accompanying drawing 3.
Accompanying drawing 5 is present invention process flow chart.
Brief description of the drawings
1. construction joint formwork, the reinforcing bar of 2. walls or beam, 3. expansion sealing strips, 4. steel plate for sealing water, 5 walls or beam.
Embodiment
A kind of cast in situ ferroconcrete wall or beam construction joint surface construction method, this method make concrete walls using retarder
Or beam construction joint surface concrete slow setting, the cement in concrete is removed after form removal, coarse aggregate is naked in construction joint surface concrete
Dew, this method are realized by following steps.
Step 1. prepares retarder, and retarder includes by weight：Glycerine 10~20%, kerosene 5~10%, ethanol 70~
85% uniform stirring is into retarder.
Step 2. installs concrete walls or beam forms, construction joint formwork are sleeved on through secondary casting concrete wall or beam one end
Construction joint formwork is fixed on the reinforcing bar of concrete walls or beam simultaneously, in construction joint formwork and concrete surface, is uniformly smeared
Step 1 prepares retarder, first time casting concrete wall or beam.
Form removal after step 3. first time casting concrete wall or beam coagulation forming, to using pressure at fixed construction joint
Hydraulic giant is washed away, and slow setting cement in concrete is washed away into removal, forms the exposed construction joint mat surface of coarse aggregate.
In construction, construction joint formwork 1 is sleeved on the reinforcing bar 2 of wall or beam 5 and fixed, the coagulation that construction joint formwork 1 contacts
Soil only can decompose and prevent to contact the solidification of medicament position concrete, not interfere with the long term of concrete under retarder effect
Intensity, not chloride ion-containing and sulfate ion, phosphate anion, between pH value is 6~8, to concrete, reinforcing bar, surrounding environment
There is no any corrosive effect；Noise, dust etc. is not produced using the engineering method simultaneously to pollute.
Make test specimen to be tested, examine retarder to different cement types, different mixture ratio, different temperatures, different lifes
The adaptability of production. art, to determine retarder dosage and washing time, determine correct technological parameter for formal construction, it is ensured that punching
Wash one's face deep-controlled 1/2~1/3 scope in concrete coarse aggregate particle diameter, it is ensured that the total quality that structure is constructed at twice can expire
The requirement designed enough.
Retarder applies the template wiped and answers horizontal positioned and dry, in case retarder flowing produces uneven distribution.Retarder
Dosage is generally 0.25kg/m2.After construction joint formwork installation, before concreting, not handy water washes away construction joint formwork, in case of
Rainy day, construction joint formwork should be covered.Horizontal construction joint retarder equally avoids rainwater or other water after smearing in 3 hours
To wash away, the rainy day pays attention to covering protection, in case retarder, which is lost in, influences Forming Quality.The cleanliness factor of component surface cleaning is should ensure that,
Residuals and false set concrete is avoided to have influence on the concrete strength of faying face.Concrete should anti-leak-stopping in casting process
Shake, in order to avoid making aggregate skewness, prevent cross to shake again, in order to avoid producing isolation, aggregate sinks.
In the embodiment of the present invention, expansion sealing strip 3 is fixedly installed in step 2 in construction joint formwork and concrete surface.
Expansion sealing strip 3 forms dash sealing in construction joint.
In the embodiment of the present invention, step 2 is sleeved on the steel plate for sealing water of concrete walls or beam in construction joint formwork.Water-stopping steel
Plate forms water retaining separater in construction joint.
Embodiment Economic and Efficiency Analysis
Construction joint is handled using the present invention, 60-7.2=52.8 yuan can be saved per square meter.By taking precious energy residence as an example, its index bed water
Flat construction joint area is 46.08 square metres, totally three buildings, 30 layers every, saves 52.8*46.08*30*3=218972.16 altogether
Member.
The social benefit that embodiment obtains
Application example 1
Precious energy Technology Park South（One phase）Engineering
The engineering is located at Shenzhen City, Guangdong Province Longhua new district Bao Neng Technology Parks, northern Linqing Li Lu, the eastern auspicious road in Linqing.Engineering is by factory
Room, office building, dormitory building composition.Overall floorage is 745182 ㎡, containing three layers of hypogee building height 99.7m.Wherein two
The horizontal construction joint and post-cast strip vertical construction joint of Concrete Structures of Tall Building are constructed using this engineering method, and application time is 2014
July in April, 2016.Its horizontal construction joint area is 2530 square metres, and post-cast strip vertical construction joint length is 1560 meters.Using
The present invention accelerates construction speed, ensure that construction quality, reduces working procedure, greatly reduces artificial and material cost, tool
There are good economic benefit and social benefit.
Application example 2
Precious energy city garden（East）Engineering
The project is located to the north of the Liu Xian main roads of Xi Li universities of Shenzhen City, Guangdong Province Nanshan District city, to the west of the open circuit of the pool.This project includes
One overall four layers of basement（Position of fixity is taken in B1 plate face, about 20 meters of basement buried depth）Totally 13 construction units on the ground,
Respectively Super High hotel apartment and Super high-rise dwelling house building and four layers of commercial building.The Wan ㎡ of overall floorage 62.66, building
Height 156.2m.The horizontal construction joint and post-cast strip vertical construction joint of wherein three Concrete Structures of Tall Building are applied using this engineering method
Work, application time are in July, 2014 in August, 2016.Its horizontal construction joint area is 3576.4 square metres, and post-cast strip is vertically applied
Work seam length is 3015 meters.Construction speed is accelerated using this engineering method, construction quality is ensure that, reduces working procedure, drop significantly
It is low manually and material cost, there is good economic benefit and social benefit.
Application example 3
Precious energy city residence first stage construction assembly is contracted project
Precious energy city residence first stage construction over contract engineering project is located in Shenzhen Xiang Mihu sections Shen Nan bamboo woods section, and west is adjacent
Wide deep high speed, the western extensions in Nan Jiehongli roads.First stage of the project boundary of works area is whole project basement part and top 2#, 3#, 4#
, construction area totally 190610 ㎡.Building height 98.75m, frame-shear structure.The horizontal construction joint of its concrete structure and after pour
Band vertical construction joint is constructed using this engineering method, and application time is in August, 2014 in June, 2016.Its concrete structure level is applied
Work seam area is 4147.2 square metres, and post-cast strip vertical construction joint length is 2160 meters.Construction speed is accelerated using this engineering method,
It ensure that construction quality, reduce working procedure, greatly reduce artificial and material cost, there is good economic benefit and society
Benefit.
Claims (3)
1. a kind of cast in situ ferroconcrete wall or beam construction joint surface construction method, this method using retarder make concrete walls or
Beam construction joint surface concrete slow setting, the cement in concrete is removed after form removal, coarse aggregate is exposed in construction joint surface concrete,
It is characterized in that：This method is realized by following steps：
Step 1. prepares retarder, and retarder includes by weight：Glycerine 10~20%, kerosene 5~10%, ethanol 70~85% are equal
It is even to stir into retarder；
Step 2. installs concrete walls or beam forms, construction joint formwork are sleeved on coagulation through secondary casting concrete wall or beam one end
Construction joint formwork is fixed on the reinforcing bar of cob wall or beam simultaneously, in construction joint formwork and concrete surface, uniform smearing step 1
Prepare retarder, first time casting concrete wall or beam；
Form removal after step 3. first time casting concrete wall or beam coagulation forming, to using pressure hydraulic giant at fixed construction joint
Washed away, slow setting cement in concrete is washed away into removal, form the exposed construction joint mat surface of coarse aggregate.
2. a kind of cast in situ ferroconcrete wall according to claim 1 or beam construction joint surface construction method, its feature exist
In：In step 2, expansion sealing strip is fixedly installed in construction joint formwork and concrete surface.
3. a kind of cast in situ ferroconcrete wall according to claim 1 or beam construction joint surface construction method, its feature exist
In：In step 2, it is sleeved in construction joint formwork on the steel plate for sealing water of concrete walls or beam.
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| CN201611198348.1A CN107542170A (en) | 2016-12-22 | 2016-12-22 | A kind of cast in situ ferroconcrete wall or beam construction joint surface construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104287A (en) * | 2018-01-05 | 2018-06-01 | 广州市芳村建筑工程有限公司 | Concrete structure and the segmentation casting method using the concrete structure |
| CN114809604A (en) * | 2022-05-11 | 2022-07-29 | 中国十九冶集团有限公司 | Pouring template and pouring structure for sealing post-pouring belt of shear wall |
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| CN103452320A (en) * | 2013-09-05 | 2013-12-18 | 中铁上海工程局有限公司 | Concrete dabbing construction method |
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| CN105421783A (en) * | 2015-12-18 | 2016-03-23 | 中交第二航务工程局有限公司 | wet joint face forming method |
| JP2016172954A (en) * | 2015-03-16 | 2016-09-29 | 鹿島建設株式会社 | Method and device for processing face of placed concrete to be joined, and method for placing concrete |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054854A (en) * | 2007-04-30 | 2007-10-17 | 中铁大桥局集团第二工程有限公司 | Construction method of quick roughening of concrete |
| CN101487295A (en) * | 2009-02-05 | 2009-07-22 | 中建三局第二建设工程有限责任公司 | Method for improving concrete horizontal construction joint bonding layer quality |
| CN103452320A (en) * | 2013-09-05 | 2013-12-18 | 中铁上海工程局有限公司 | Concrete dabbing construction method |
| CN104032841A (en) * | 2014-07-02 | 2014-09-10 | 中冶天工集团有限公司 | Method for treating horizontal construction joint of concrete wall |
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| JP2016172954A (en) * | 2015-03-16 | 2016-09-29 | 鹿島建設株式会社 | Method and device for processing face of placed concrete to be joined, and method for placing concrete |
| CN104775530A (en) * | 2015-03-18 | 2015-07-15 | 同济大学 | Interface treatment method for horizontal construction seam of concrete |
| CN105421783A (en) * | 2015-12-18 | 2016-03-23 | 中交第二航务工程局有限公司 | wet joint face forming method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108104287A (en) * | 2018-01-05 | 2018-06-01 | 广州市芳村建筑工程有限公司 | Concrete structure and the segmentation casting method using the concrete structure |
| CN114809604A (en) * | 2022-05-11 | 2022-07-29 | 中国十九冶集团有限公司 | Pouring template and pouring structure for sealing post-pouring belt of shear wall |
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