CN103452320A - Concrete dabbing construction method - Google Patents

Concrete dabbing construction method Download PDF

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Publication number
CN103452320A
CN103452320A CN2013103987557A CN201310398755A CN103452320A CN 103452320 A CN103452320 A CN 103452320A CN 2013103987557 A CN2013103987557 A CN 2013103987557A CN 201310398755 A CN201310398755 A CN 201310398755A CN 103452320 A CN103452320 A CN 103452320A
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CN
China
Prior art keywords
dabbing
concrete
retarding agent
concreting
treating
Prior art date
Application number
CN2013103987557A
Other languages
Chinese (zh)
Inventor
叶少斌
黄卫东
姚松柏
徐康
肖本虎
张雅平
李念军
朱德军
Original Assignee
中铁上海工程局有限公司
中铁上海工程局第一工程有限公司
Priority date (The priority date 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 date listed.)
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Application filed by 中铁上海工程局有限公司, 中铁上海工程局第一工程有限公司 filed Critical 中铁上海工程局有限公司
Priority to CN2013103987557A priority Critical patent/CN103452320A/en
Publication of CN103452320A publication Critical patent/CN103452320A/en

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Abstract

The invention discloses a concrete dabbing construction method, which is characterized in that firstly, when a position to be dabbed is a concrete mold surface, retarders are sprayed and coated or coated and brushed at the concrete inner mold surface before the concrete pouring; when a position to be dabbed is a concrete pouring surface, the retarders are immediately and directly sprayed and coated at the concrete pouring surface after the concrete pouring is completed; the consumption of the retarders is 0.15 to 0.5kg/m<2>, and the smearing thickness is 0.3 to 0.8mm; and within 12 to 24 hours after the template dismounting, the pressure of a high-pressure water gun is utilized for carrying out flushing operation on the position to be dabbed, the flushing pressure of the high-pressure water gun is 5 to 6MPa, no retarders are left at the position to be dabbed through flushing, in addition, cement paste at the position to be dabbed is flushed until aggregates are exposed, and the requirement of construction gap dabbing is reached. The concrete dabbing construction method has the advantages that simplicity is realized, the speed is high, the efficiency is high, the noise is reduced, and the economy is realized.

Description

A kind of concrete dabbing job practices
Technical field
The present invention relates to a kind of method that is applicable to the position concrete dabbing constructions such as various concrete structure construction seams, ater-casting.
Background technology
In engineering construction, the binding site of New-old concrete forms constuction joint, the quality of constuction joint place dabbing quality can affect the continuity of concrete structure, unfavorable to concrete bending resistance, shearing resistance, and the phenomenon that easily produces dislocation when the concrete bending resistance is totally unfavorable to concrete structure stress.In the dabbing of concrete construction joint, processing is a construction common fault that is difficult to thorough solution all the time.Traditional dabbing method has artificial chiseling, dabbing machine dabbing, pneumatic pick dabbing etc., and in the dabbing process, operator's labour intensity is large, noise is large, but produces little effect, and the laitance at constuction joint place is processed all the time and thoroughly do not reached desirable effect.Current existing super-pressure rinses the dabbing method, and flushing pressure requires the hundreds of MPa, high to equipment requirement, has high input.
The present invention is for avoiding the existing weak point of above-mentioned prior art, and a kind of simpler and easy, quick, efficient, noise abatement, economic concrete dabbing job practices are provided.
The present invention is that the technical solution problem adopts following technical scheme:
The characteristics of concrete dabbing job practices of the present invention are to carry out as follows:
Step 1: for treating that the dabbing position is the concrete belt die face, before concreting, retarding agent is sprayed or brushes on the concrete inner mould surface; For treating that the dabbing position is concreting face, when concreting is complete, with being about to retarding agent, be painted on concreting face; The consumption of described retarding agent is 0.15-0.5kg/m 2, smearing thickness is at 0.3-0.8mm;
Step 2: stripping, and the press water that utilizes giant after stripping in 12~24 hours is for treating that the dabbing position rinsed operation, the flushing pressure of described giant is 5~6MPa, make to treat the retarding agent noresidue at dabbing position through flushing, and the cement paste that will treat the dabbing position rinses out until aggregate exposure reaches the requirement of constuction joint dabbing.
The characteristics of concrete dabbing job practices of the present invention also are:
For wooden template, by retarding agent direct spraying or brushing on the surface of wooden template; For the steel template, in retarding agent, add appropriate dextrin to stir after spraying or brushing on the surface of steel template; Described dextrin and retarding agent proportional quantity by weight is 1:100.
The press water that utilizes giant is for treating that the dabbing position rinsed operation, and the spray angle of press water is not vertical with roughened surface, in order to avoid splash and hurt sb.'s feelings washing away process medium stone particle.
The inventive method adopts at concrete surface brushing concrete surface retarders, delays surperficial concrete time of setting and strength developing, affect the degree of depth and can reach 5~10mm, to concrete and steel bar quality without any harmful effect.In 24 hours, adopt common giant can meet the flushing dabbing to concrete surface.For band mould concrete surface; can before concreting, at corresponding internal mold external coating retarding agent, also can reach same effect; after the method tackify of mixing again by retarding agent and dextrin, applicable to the template of the various materials such as steel template, bamboo offset plate, plastic formwork, the scope of application is wider.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, material equipment less investment of the present invention, only need to prepare one common giant and appropriate retarding agent; The dabbing that can be used for each face of concrete structure, to narrow, space is little, reinforcing bar is intensive etc., and not easy-operating constuction joint dabbing processes more has superiority, applied widely; More effective than artificial and mechanical dabbing, can effectively obtain rough interfaces, and easy damaged concrete quality not, to built-in fitting, disturb little;
2, for steel template, PVC plastic formwork etc., the problem that the inadequate tack of retarding agent viscosity is poor.The present invention is by admixture dextrin in proportion in retarding agent, improved viscosity and tack and do not affected the retarding effect of retarding agent, makes the present invention also can obtain very good effect in steel template and plastic formwork, expanded the scope of application.
3, the inventive method greatly reduces labour intensity, has reduced noise pollution, has saved the artificial mechanism cost; Method of operating comparatively is simple and easy to grasp, and compares and has saved a large amount of activity durations with artificial and mechanical dabbing, and be convenient to operating personnel's operation, is happy to be accepted by the workman.
The specific embodiment
The characteristics of concrete dabbing job practices of the present invention are to carry out as follows:
Step 1: for treating that the dabbing position is the concrete belt die face, before concreting, retarding agent is sprayed or brushes on the concrete inner mould surface; For treating that the dabbing position is concreting face, when concreting is complete, with being about to retarding agent, be painted on concreting face; The consumption of described retarding agent is 0.15-0.5kg/m 2, smearing thickness is at 0.3-0.8mm;
Step 2: stripping, and the press water that utilizes giant after stripping in 12~24 hours is for treating that the dabbing position rinsed operation, the flushing pressure of described giant is 5~6MPa, make to treat the retarding agent noresidue at dabbing position through flushing, and the cement paste that will treat the dabbing position rinses out until aggregate exposure reaches the requirement of constuction joint dabbing.
In concrete enforcement, for wooden template, the surface by retarding agent direct spraying or brushing in wooden template; For the steel template, in retarding agent, add appropriate dextrin to stir after spraying or brushing on the surface of steel template; Described dextrin and retarding agent proportional quantity by weight is 1:100.The method that retarding agent and dextrin are mixed again can increase viscosity, makes the template of the inventive method applicable to various materials such as steel template, bamboo offset plate, plastic formworks, and the scope of application is quite extensive.
For fear of splashing and hurt sb.'s feelings washing away process medium stone particle, when being rinsed operation, the spray angle of press water should not be vertical with roughened surface.
In the present invention, concrete retarder is to take high molecular polymer as primary raw material, the fluent material of hydrous water, slow setting, film forming, the preparation of resistance rust component.Its use has reduced concrete and has rinsed difficulty, has reduced the pressure requirement of flushing device,
In concrete enforcement, concrete retarder is used the SAMSON DSZ-2 of architecture engineering material Co., Ltd of Xi Meng department (Shanghai) type concrete retarder; Dextrin is the adhesive that is widely used in medicine, food, papermaking, casting, wallpaper, label, stamp, adhesive tape etc., that starch is hydrolyzed through enzyme process or chemical method the catabolite obtained, for several to the oligosaccharides of dozens of glucose unit and the mixture of glycan, its chemical molecular formula is identical with starch is all that (C6H10O5) n ,Ke Shou city is buied.

Claims (3)

1. a concrete dabbing job practices is characterized in that carrying out as follows:
Step 1: for treating that the dabbing position is the concrete belt die face, before concreting, retarding agent is sprayed or brushes on the concrete inner mould surface; For treating that the dabbing position is concreting face, when concreting is complete, with being about to retarding agent, be painted on concreting face; The consumption of described retarding agent is 0.15-0.5kg/m 2, smearing thickness is at 0.3-0.8mm;
Step 2: stripping, and the press water that utilizes giant after stripping in 12~24 hours is for treating that the dabbing position rinsed operation, the flushing pressure of described giant is 5~6MPa, make to treat the retarding agent noresidue at dabbing position through flushing, and the cement paste that will treat the dabbing position rinses out until aggregate exposure reaches the requirement of constuction joint dabbing.
2. concrete dabbing job practices according to claim 1 is characterized in that: for wooden template, and the surface by retarding agent direct spraying or brushing in wooden template; For the steel template, in retarding agent, add appropriate dextrin to stir after spraying or brushing on the surface of steel template; Described dextrin and retarding agent proportional quantity by weight is 1:100.
3. concrete dabbing job practices according to claim 1, it is characterized in that: the press water that utilizes giant is for treating that the dabbing position rinsed operation, the spray angle of press water is not vertical with roughened surface, in order to avoid splash and hurt sb.'s feelings washing away process medium stone particle.
CN2013103987557A 2013-09-05 2013-09-05 Concrete dabbing construction method CN103452320A (en)

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Application Number Priority Date Filing Date Title
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104372952A (en) * 2014-11-19 2015-02-25 中交二公局第五工程有限公司 Unstressed permeating washing scabbling technology
CN105113425A (en) * 2015-09-24 2015-12-02 中交第二航务工程局有限公司 Novel construction method for efficient fabricated steel-concrete composite beam
CN105298132A (en) * 2015-09-22 2016-02-03 中国建筑第八工程局有限公司 Construction method of super-high-rise core tube wall concrete structure
CN105350445A (en) * 2015-09-24 2016-02-24 中交第二航务工程局有限公司 Novel efficient assembly-type reinforced concrete composite beam
CN107542170A (en) * 2016-12-22 2018-01-05 深圳建业工程集团股份有限公司 A kind of cast in situ ferroconcrete wall or beam construction joint surface construction method
CN109109145A (en) * 2018-09-08 2019-01-01 北京市门头沟水利工程有限公司 Giant dabbing construction equipment and method
CN109624066A (en) * 2018-12-18 2019-04-16 中交第航务工程局有限公司 A kind of concrete component water rushes dabbing technique
CN109881795A (en) * 2019-02-21 2019-06-14 福州大学 One kind making the continuous construction method of concrete structure seam crossing fiber by different setting times
CN110578392A (en) * 2019-09-21 2019-12-17 深圳市弘景装饰工程有限公司 High-safety strong bonding type tile laying method
CN110792262A (en) * 2019-11-06 2020-02-14 江苏建筑职业技术学院 Net tool for chiseling and construction method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58156627A (en) * 1982-03-15 1983-09-17 Takenaka Komuten Co Ltd Crack preventive work for mass-concrete structure
EP0465991A1 (en) * 1990-07-09 1992-01-15 Sika AG, vorm. Kaspar Winkler &amp; Co. Mortar and concrete to be processed by wet spraying and method of production of mortar and concrete
CN101148336A (en) * 2007-09-07 2008-03-26 辽河石油勘探局 Concrete ultra-retarding agent and preparing process thereof
CN102373666A (en) * 2011-09-19 2012-03-14 江苏省交通科学研究院股份有限公司 Method for quickly roughening concrete by retarder flushing
CN202483122U (en) * 2012-03-05 2012-10-10 中国核工业华兴建设有限公司 Steel cladding concrete

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58156627A (en) * 1982-03-15 1983-09-17 Takenaka Komuten Co Ltd Crack preventive work for mass-concrete structure
EP0465991A1 (en) * 1990-07-09 1992-01-15 Sika AG, vorm. Kaspar Winkler &amp; Co. Mortar and concrete to be processed by wet spraying and method of production of mortar and concrete
CN101148336A (en) * 2007-09-07 2008-03-26 辽河石油勘探局 Concrete ultra-retarding agent and preparing process thereof
CN102373666A (en) * 2011-09-19 2012-03-14 江苏省交通科学研究院股份有限公司 Method for quickly roughening concrete by retarder flushing
CN202483122U (en) * 2012-03-05 2012-10-10 中国核工业华兴建设有限公司 Steel cladding concrete

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
臧庆珊等: "《SR型混凝土表面缓凝剂》", 《建筑技术》 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104372952A (en) * 2014-11-19 2015-02-25 中交二公局第五工程有限公司 Unstressed permeating washing scabbling technology
CN105298132A (en) * 2015-09-22 2016-02-03 中国建筑第八工程局有限公司 Construction method of super-high-rise core tube wall concrete structure
CN105113425A (en) * 2015-09-24 2015-12-02 中交第二航务工程局有限公司 Novel construction method for efficient fabricated steel-concrete composite beam
CN105350445A (en) * 2015-09-24 2016-02-24 中交第二航务工程局有限公司 Novel efficient assembly-type reinforced concrete composite beam
CN107542170A (en) * 2016-12-22 2018-01-05 深圳建业工程集团股份有限公司 A kind of cast in situ ferroconcrete wall or beam construction joint surface construction method
CN109109145A (en) * 2018-09-08 2019-01-01 北京市门头沟水利工程有限公司 Giant dabbing construction equipment and method
CN109624066A (en) * 2018-12-18 2019-04-16 中交第航务工程局有限公司 A kind of concrete component water rushes dabbing technique
CN109881795A (en) * 2019-02-21 2019-06-14 福州大学 One kind making the continuous construction method of concrete structure seam crossing fiber by different setting times
CN110578392A (en) * 2019-09-21 2019-12-17 深圳市弘景装饰工程有限公司 High-safety strong bonding type tile laying method
CN110792262A (en) * 2019-11-06 2020-02-14 江苏建筑职业技术学院 Net tool for chiseling and construction method

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Application publication date: 20131218