CN102839685A - Method for shortening coating period of concrete structure surface coating - Google Patents
Method for shortening coating period of concrete structure surface coating Download PDFInfo
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- CN102839685A CN102839685A CN2012103190827A CN201210319082A CN102839685A CN 102839685 A CN102839685 A CN 102839685A CN 2012103190827 A CN2012103190827 A CN 2012103190827A CN 201210319082 A CN201210319082 A CN 201210319082A CN 102839685 A CN102839685 A CN 102839685A
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Abstract
The invention discloses a method for shortening the coating period of a concrete structure surface coating. The method is characterized by including the following steps: (a) fixing a water-permeable mold plate lining on the inner side of a steel mold plate for pouring at an early stage of concrete pouring; and (b) carrying out concrete pouring while vibrating the concrete with a vibrator, so that excessive mixing water, air bubbles and fine particle parts of binder in the concrete migrate to the water-permeable mold plate lining under the vibrating action, and allowing the air bubbles to escape upward, water to be discharged downward and the fine particle parts of the binder to be enriched on the outer surface of the structure under the action of the water-permeable mold plate lining. The inventive method is clear in principle, simple to operate, and remarkable in technical and economic benefits, and can shorten the comprehensive coating period by at least 14 days, ensure coating quality, shorten offshore operation time, lower construction risks and save engineering investment.
Description
Technical field
The present invention relates to a kind of method that can shorten such as concrete structure face coat application cycles such as offshore concrete engineerings.
Background technology
For the offshore concrete works, the surface anticorrosion application can postpone the time that corrosive medium arrives at rebar surface, thus the service life of extending structure thing.Being in the tidal range district is the poorest part of service condition with the concrete structure that wave spatters the district; And contact with the too early of seawater for fear of being in these regional concrete; Usually adopt facilities such as steel cofferdam, steel box, steel bushing case to realize sealing and enclose water, inside is set up template again and is carried out concreting.Regulation according to " concrete for marine works structural anticorrosion erosion technical specification " (JTJ 275-2000) is the adhesive power and the application life of guaranteeing corrosion-inhibiting coating, and the curing time of concrete component generally should not be less than 28 days, surface moisture content＜6%.Before application, need the employing special diluting agent greasy dirt that works is surperficial, release agent etc. to clean out, thoroughly remove loose attachments such as the surperficial not firm mortar of concrete component application, wedge angle.Rinse well with fresh water on application surface after the cleaning, removes the dust in crackle and the pin hole, and dry the water mark that remains in concrete application surface, makes concrete surface be in the surface drying state.
After the epoxy seal coat construction, if any visible pore, defective etc., it is smooth to use special-purpose epoxy putty to repair; Guarantee the smooth and continuous of coating; Putty should combine with coating interface well, can be bonding securely with the works basal plane, and again can be compatible well with coating.After coating decoration finishes, need to carry out the coating performance test after the maintenance 7d.
In above-mentioned job practices, it is higher that the input of enclosing drainage facility accounts for the ratio of such works cost, and turnover is slow, long construction period.
This shows that the method for concrete structure face coat of the prior art application awaits further to improve.
Summary of the invention
Task of the present invention is to provide a kind of concrete structure face coat method in application cycle that shortens.
Its technical solution is:
A kind of concrete structure face coat method in application cycle that shortens may further comprise the steps:
A concreting at the inboard fixedly permeable template lining of the steel form that is used to build, treats that the permeable template lining fixes the back and gets into step b in earlier stage;
B carries out concreting, in the process of building, uses vibrating spear to vibrate; The fine fraction of unnecessary mixing water, bubble and cementitious material moves to permeable template lining place in the concrete under the effect of vibrating; Under the effect of permeable template lining; Bubble is upwards overflowed, moisture is discharged downwards, and the fine fraction of cementitious material is enriched in the works external surface.
Among the above-mentioned steps a,, carry out rainproof and preventing coating protection to being fixed with the steel form of permeable template lining.
Among the above-mentioned steps b, in the process of vibrating, avoid vibrating spear to contact, prevent that the permeable template lining is impaired with the permeable template lining.
Above-mentioned steel form is meant that being erected at sealing encloses the steel form in the aqua region, and above-mentioned sealing is enclosed aqua region and taked steel cofferdam, steel box or steel bushing case to realize.
The present invention has following useful technique effect:
The present invention is fixed with the permeable template lining in the steel form inboard, can be under the effect of permeable template lining with the top layer concrete in unnecessary mixing water and bubble discharge, reduce the concrete water-cement ratio in top layer, improve concrete compactness; At first significantly improve the concrete performance in top layer in length of time morning, reduced surface moisture content, can paint coating have been foreshortened to 18 days by 28 days the length of time; Secondly, owing to the no greasy dirt in surface, the floating ash of nothing, saved the surface clean operation; The 3rd, the no macroscopical bubble in surface and other defectives have been saved putty levelling and surface blemishes treatment process, have shortened the paint coating time.The present invention can guarantee that the paint coating quality can accelerate to enclose the turnaround speed of drainage facility again, when shortening total duration, also can practice thrift a large amount of engineering inputs.
The principle of the invention is clear and definite, simple to operate, technology and remarkable in economical benefits, can shorten 14 days comprehensive cycles of paint coating at least, wherein shortens the 10 days length of time of application, exempts dirtyly saving 2 days, exempts from the Puttying levelling and saves 2 days.The present invention can guarantee coating quality, shortens the operation on the sea time, reduces construction risk, and saves the engineering input.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is illustrated further:
Figure is the principle schematic of a kind of application scenarios of the present invention.
The specific embodiment
In conjunction with accompanying drawing, a kind of concrete structure face coat method in application cycle that shortens may further comprise the steps:
A concreting at the steel form that is used to build 1 inboard fixedly permeable template lining 2, treats that the permeable template lining fixes the back and gets into step b in earlier stage.Preferably, to being fixed with the steel form of permeable template lining, should carry out protection work such as rainproof and sun-proof.More preferably, above-mentioned steel form is meant that being erected at sealing encloses the steel form in the aqua region, and sealing is enclosed aqua region and can be taked realizations such as steel cofferdam, steel box or steel bushing case.
B carries out concreting, in the process of building, uses vibrating spear to vibrate; The fine fraction of unnecessary mixing water, bubble and cementitious material moves to permeable template lining place in the concrete 3 under the effect of vibrating; Under the effect of permeable template lining; Bubble is upwards overflowed, moisture is discharged downwards, and the fine fraction of cementitious material is enriched in the works external surface.Preferably, in the process of vibrating, should avoid vibrating spear to contact, prevent that the permeable template lining is impaired with the permeable template lining.
The present invention is through discharging bubble and unnecessary mixing water; And the fine fraction that drives cementitious material reduced the concrete water-cement ratio in top layer to the enrichment of works external surface, eliminated bubble and other defectives; Improve the early hydration degree of cementitious material; Improve the concrete compactness in top layer, shortened concrete and reached the length of time that can be coated with reload request, saved putty levelling operation.
In addition, because permeable template lining and concrete surface fit tightly, do not need brushing release agent or other to be beneficial to the organic material of the demoulding, concrete surface does not totally have dirt after the demoulding, saves the cleaning surfaces operation, can directly carry out paint coating.
The present invention is specially adapted to the offshore concrete engineering that projected life is long, construction environment is abominable.
The relevant technologies content of not addressing in the aforesaid way is taked or is used for reference prior art and can realize.
Need to prove that those skilled in the art can also make such or such easy variation pattern under the instruction of this manual, such as equivalent way, or obvious mode of texturing.Above-mentioned variation pattern all should be within protection scope of the present invention.
Claims (4)
1. one kind is shortened the concrete structure face coat method in application cycle, it is characterized in that may further comprise the steps:
A concreting at the inboard fixedly permeable template lining of the steel form that is used to build, treats that the permeable template lining fixes the back and gets into step b in earlier stage;
B carries out concreting, in the process of building, uses vibrating spear to vibrate; The fine fraction of unnecessary mixing water, bubble and cementitious material moves to permeable template lining place in the concrete under the effect of vibrating; Under the effect of permeable template lining; Bubble is upwards overflowed, moisture is discharged downwards, and the fine fraction of gel rubber material is enriched in the works external surface.
2. a kind of concrete structure face coat method in application cycle that shortens according to claim 1 is characterized in that: among the said step a, to being fixed with the steel form of permeable template lining, carry out rainproof and preventing coating protection.
3. a kind of concrete structure face coat method in application cycle that shortens according to claim 1 is characterized in that: among the said step b, in the process of vibrating, avoid vibrating spear to contact with the permeable template lining, prevent that the permeable template lining is impaired.
4. a kind of concrete structure face coat method in application cycle that shortens according to claim 1; It is characterized in that: said steel form is meant that being erected at sealing encloses the steel form in the aqua region, and above-mentioned sealing is enclosed aqua region and taked steel cofferdam, steel box or steel bushing case to realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103190827A CN102839685A (en) | 2012-08-31 | 2012-08-31 | Method for shortening coating period of concrete structure surface coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103190827A CN102839685A (en) | 2012-08-31 | 2012-08-31 | Method for shortening coating period of concrete structure surface coating |
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| CN102839685A true CN102839685A (en) | 2012-12-26 |
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| CN2012103190827A Pending CN102839685A (en) | 2012-08-31 | 2012-08-31 | Method for shortening coating period of concrete structure surface coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111545103A (en) * | 2020-05-13 | 2020-08-18 | 郭保林 | Powder proportioning and mixing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006348523A (en) * | 2005-06-14 | 2006-12-28 | Ohbayashi Corp | Wall panel joining structure, construction method for continuous underground wall, and continuous underground wall |
| CN101037003B (en) * | 2007-04-03 | 2010-11-24 | 水利部交通部电力工业部南京水利科学研究院 | Method and device for forecasting concrete anti-leaking U-shaped groove by using permeability formwork gasket |
| CN101984189A (en) * | 2010-11-10 | 2011-03-09 | 中交第二航务工程局有限公司 | Construction method of large steel concrete composite multi-terrace slope skewback |
-
2012
- 2012-08-31 CN CN2012103190827A patent/CN102839685A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006348523A (en) * | 2005-06-14 | 2006-12-28 | Ohbayashi Corp | Wall panel joining structure, construction method for continuous underground wall, and continuous underground wall |
| CN101037003B (en) * | 2007-04-03 | 2010-11-24 | 水利部交通部电力工业部南京水利科学研究院 | Method and device for forecasting concrete anti-leaking U-shaped groove by using permeability formwork gasket |
| CN101984189A (en) * | 2010-11-10 | 2011-03-09 | 中交第二航务工程局有限公司 | Construction method of large steel concrete composite multi-terrace slope skewback |
Non-Patent Citations (3)
| Title |
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| 傅立容: "透水模板在盐田港区三期工程中的应用研究", 《水运工程》 * |
| 郭保林: "模板衬里改善表层混凝土质量的机理研究", 《建筑材料学报》 * |
| 郭保林等，: "青岛海湾大桥承台混凝土寒季养护技术", 《施工技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111545103A (en) * | 2020-05-13 | 2020-08-18 | 郭保林 | Powder proportioning and mixing method |
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Application publication date: 20121226 |