CN1425838A - Thermal insulation wetting formwork for concrete formation - Google Patents
Thermal insulation wetting formwork for concrete formation Download PDFInfo
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- CN1425838A CN1425838A CN 01142656 CN01142656A CN1425838A CN 1425838 A CN1425838 A CN 1425838A CN 01142656 CN01142656 CN 01142656 CN 01142656 A CN01142656 A CN 01142656A CN 1425838 A CN1425838 A CN 1425838A
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- formwork
- heat insulating
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Abstract
The thermal insulating and wetting formwork is used for casing and curing concrete. In the bottom of the formwork there is small holes with filtering screen and connected to water seeping branch pipe and the branch pipes are connected to total pipe and water source. There are also heat insulating layer on the bottom and with waterproof protecting layer on tis surface, and heat insulating sealing rubber rings installed on the side frame. The heat insulating layer and the waterproof layer can reduce the temperature difference and temperature difference stress in concrete and thus prevent crack caused by temperature different. Water may be seepled to surface of concrete to maintain the moisture state and to avoid dry shrinkage crack. The present invention may be used in various large and small, concrete engineering when the thickness and type of the heat insulating layer is altered.
Description
Technical field
The present invention relates to the template that moulding and curing concrete are used.
Technical background
Concrete is the secondary operations material.With member and structures such as the beam of concreting, post, wall, bases, outside the Pass its quality is removed and had with material quality, characteristic and match ratio, and build moulding, maintaining process sizable relation is also arranged.May produce the crack because underlying cause, concrete are general equal in hardening process.
1. the chemistry of hydrated cementitious generation reduces;
2. the concrete surface capillary water evaporates the plastic shrinkage that causes;
3. the volume contraction that causes of cement stone dehydration drying;
4. the temperature difference crack that causes of the concrete surface that causes of hydration heat of cement and internal difference in temperature stress.
Outside the argillization that dewaters is reduced unavoidably, the concrete of new moulding is strengthened maintenance, can effectively reduce crack on concrete.Therefore, in order to guarantee the concrete formation quality, one of most important technical measures are carried out good heat and moisture preserving maintenance to concrete exactly.Whether keep concrete surface moistening, prevent that drying from being the key that effectively guarantees concrete strength developing, reduces concrete early-age shrinkage.Concrete surface is taked good insulation measure, reduces concrete inside and outside temperature difference Δ t, can reduce concrete thermal (temperature difference) stress crack.In fact, mass concrete construction, t has strict demand to Δ.
Yet in engineering practice, when some thicker bodies of wall, the construction of large volume Foundation Design, not good enough because of the maintenance measure, the appearance of temperature difference crack is quite general.At present,, mainly take some measures,, select low head of hydratation cement for use as the admixture retarding agent from concrete mix and raw material aspect to the temperature difference crack problem, big volume admixture composite material, the concrete raw material precooling treatment, the structure middle berth makes cold pipeline etc.Its principle is the concrete heat of hydration peak heat release phase of postponement, or reduces the heat of hydration, reduction concrete internal temperature etc.
Therefore, well-known in the industry, concrete maintenance requires outside have good temperature and humidity environment.Up to now, concrete maintenance process is adopted: straw mattress is laid on concrete level construction surface, and keeps moistening; Concrete side is by template support, and template is mainly the ordinary steel template, and a small amount of engineering also adopts wooden form.Look project situation such as concrete in mass etc., sometimes at the outside straw mattress of hanging of template.Begin moisture-keeping maintaining after the form removal.General curing in the mold a period of time of concrete, during this period in, be difficult to simultaneously to satisfy insulation and preserve moisture two requirements.On the one hand, from the angle of insulation, concrete blinding should be removed later, but so then the work of preserving moisture is difficult to carry out, and that concrete can't be watered is moistening because of template airtight gone along with sb. to guard him; On the other hand, the early stage form removal moistening concrete surface that waters shrink to prevent the early stage dry dehydration of concrete, but this causes the concrete inside and outside temperature difference bigger again, because during this period, concrete strength is low, so concrete is easy to produce temperature difference crack.
The ordinary steel template that adopts during the concrete engineering construction moulding: make by steel sheet, steel framework, ribs.The steel form characteristics: product is convenient to regularization, standardization, is suitable for producing in enormous quantities.The forming surface quality is good on the coagulation; Can use repeatedly.It is the most widely used template.At present, the modularization of the size of steel form is selected when available.During construction the modularization steel form can be finished form work engineering with the splicing of standard connecting piece, support.Sometimes also adopt wooden form.Wooden form is divided into common timber template and plywood form.The former is that waste of material is big by common producing wood, makes fully by manually finishing, and forming surface is second-rate.At present, only in fragmentary little engineering, application is arranged.Plywood form is better because of its forming surface quality, and shaping speed is very fast, so use more.During construction according to the concrete component shape, process wood or veneer, fixing and supported, thereby the form work engineering of finishing.Because after the timber immersion, intensity descends, and is easy to corrosion, so the loss of template is bigger.In a word, existing templates only has the moulding function, does not consider concrete maintenance problem.
Summary of the invention
The objective of the invention is to design a kind of template that can be applied to concrete moulding and maintenance, this template not only has the moulding function, also can be concrete good temperature and humidity environment is provided, effectively improve the concrete curing condition, improve concrete inherent quality, the cracking that reduces dry contraction, temperature difference contraction and cause thus.
In order to achieve the above object, the present invention adopts following technical scheme: by Form board frame, template plate, the steel form of the common form of ribs assembling are provided with heat-insulation system and infiltration device.The infiltration device is to have a plurality of apertures on template plate, and filter screen is housed in the aperture, and filter screen can make moisture infiltrate concrete and the green concrete slurry can not enter in the infiltration arm.Be consolidated with the infiltration arm on each aperture, the infiltration arm all is communicated with the infiltration house steward, and the house steward that seeps water connects with external water source, so that water is introduced template, and moisture is infiltrated concrete surface, the purpose of reach the concrete humidification, preserving moisture by seep water arm and aperture.On template plate, make insulation layer, to reach the purpose of concrete heat-insulating.The insulation layer manufacture craft can adopt foam process, technique for sticking or filling process, and heat insulating material can be foamed polystyrene, foamed polyurethane, expanded perlite or other common heat insulating materials.Fish tail and waterproof layer is set on insulation layer, makes it and Form board frame, fixed, the sealing of infiltration house steward, enter insulation layer so that stop moisture.Form board frame is peripherally equipped with the thermal-insulating sealing rubber ring, to prevent that water from dividing and temperature runs off by the die clearance.
The present invention has following advantage:
1. owing to the external surface of the present invention at common punching block, insulation layer is set, make template not only have the moulding function, also has good heat-insulating property, can reduce hydration heat of concrete is dispersed into external environment condition by template rate of heat transfer greatly, concrete surface temperature and internal temperature are more or less the same, thereby reduce thermal (temperature difference) stress greatly, thereby can prevent effectively that concrete from producing temperature difference crack.Insulation layer surface is protected by waterproofing course, can prevent that moisture from infiltrating insulation layer, guarantees that heat insulation effect of the present invention is good.
2. because the present invention offers aperture, infiltration arm, infiltration house steward on base plate, can be connected with external water source, so after hardening of concrete a period of time, outside moisture can be infiltrated concrete surface by soakaway trench and aperture, make concrete keep moisture state.In this process, the supporting template does not need to take apart.Thereby can guarantee under the situation that concrete surface and internal temperature are more or less the same, make concrete keep good moisture state, prevent that effectively concrete from producing early stage shrinkage crack.
3. adjust insulation layer thickness of the present invention and kind, the heat-insulating property of adjustable formwork, therefore, the present invention is widely used, and can be used for large-scale or mega-construction project, also can be used for small members.
Description of drawings
Fig. 1: structural representation of the present invention.
Fig. 2: top view of the present invention.
Fig. 3: bottom view of the present invention.
Specific implementation method
See also accompanying drawing 1, Fig. 2, Fig. 3.The present invention by ribs 1, fish tail and waterproof layer 2, insulation layer 3, thermal-insulating sealing rubber ring 4, Form board frame 5, infiltration arm 6, in establish filter screen aperture 7, template plate 8 and infiltration house steward 9 form.
Program is Form board frame 5 at first routinely, template plate 8, and ribs 1 is assembled into the steel form of common form.Then have the aperture 7 of a plurality of band filter screens on the base plate 8 of the steel form that assembles, the number of aperture 7 is determined by the specification of template, is generally 2-8.Be connected with infiltration arm 6 on the aperture 7, infiltration arm 6 all is communicated with infiltration house steward 9, and infiltration house steward 9 connects with external water source.
On template plate 8, adopt foam process, technique for sticking or filling process, foamed polystyrene, foam polyurethane, expanded perlite or other common heat insulating materials are made insulation layer 3.On insulation layer 3, fixed, brushing, fish tail and waterproof layer 2 is installed, and is made it and Form board frame 5, infiltration house steward 9 sealing and fixing.Thermal-insulating sealing rubber ring 4 is installed on Form board frame 5.
During use, template of the present invention is pressed ordinary steel template construction mounting process, connect each template, make satisfactory concrete formation template with the standard connecting piece, water pipe and water source or water pump connection are installed on the infiltration house steward 9 of each template, at the water source or the water pump place water source switch is set.
In the present invention, concrete pouring construction method is identical with ordinary steel template moulding concrete.With when construction, close water source switch before the construction.Concrete formation a period of time, have certain intensity after, the source switch of fetching boiling water carries out the humidification maintenance to concrete.Moisture is by the aperture 7 moistening concrete surfaces of water pipe, infiltration house steward 9, infiltration arm 6, band filter screen.Because concrete itself has certain porosity, moisture has certain pressure in addition, and the concrete around the aperture is also by moistening.The reasonable Arrangement aperture pitch, it is fully moistening that whole concrete surfaces are obtained.(as low-temperature construction) in some cases, the water source can be provided with heater, to reduce the influence of low temperature moisture to surface temperature of concrete.Concrete belt mould curing time is relevant with volume of concrete, and the time is suitable longer, answers maintenance at least 7 days.The suitable maintenance longer time of concrete in mass.Maintenance is finished, and removes water pipe earlier, and all the other technologies are identical with ordinary steel template moulding concrete.After removing template, should continue water seasoning a period of time.
Test effect of the present invention: test in the laboratory: the concrete sample of 20 * 20 * 20cm covers the thick foamed polystyrene board of 30mm at concrete die trial external surface and concrete exposed surface.The maximum temperature difference on actual measurement inside concrete and surface is about 10 ℃.And the contrast groups test specimen, maximum temperature difference is about 25 ℃.Because concrete sample is less, the concrete central temperature is about 50 ℃, and in fact, 1m thick wall body central temperature can reach 60 ℃ or higher.
Application of the present invention: be applicable to that site operation makes concrete moulding and maintenance.Especially suitable to concrete in mass, exposed coefficient small construction thing if any the thick big body of wall that antiseepage requires.
Claims (2)
1. the thermal insulation wetting formwork used of concrete formation, comprise by Form board frame (5), template negative (8), the steel form of the common form that ribs (1) is assembled into is characterized in that: steel form is provided with heat-insulation system and infiltration device, and the infiltration device is to have a plurality of apertures (7) on template plate (8), aperture is equipped with filter screen in (7), be consolidated with infiltration arm (6) on the aperture (7), infiltration arm (6) all is communicated with infiltration house steward (9), and infiltration house steward (9) connects with external water source; Heat-insulation system is to go up at template plate (8) to adopt foam process, technique for sticking or filling process to be manufactured with insulation layer (3), on insulation layer (3) surface fish tail and waterproof layer (2) is set, and makes it to seal fixed with Form board frame (5), infiltration house steward (9); Go up installation thermal-insulating sealing rubber ring (4) at Form board frame (5).
2. the thermal insulation wetting formwork that concrete formation according to claim 1 is used is characterized in that: the material of described insulation layer (3) can be foamed polystyrene plate, foam polyurethane, expanded perlite or common heat insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01142656 CN1261660C (en) | 2001-12-14 | 2001-12-14 | Thermal insulation wetting formwork for concrete formation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01142656 CN1261660C (en) | 2001-12-14 | 2001-12-14 | Thermal insulation wetting formwork for concrete formation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1425838A true CN1425838A (en) | 2003-06-25 |
| CN1261660C CN1261660C (en) | 2006-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01142656 Expired - Fee Related CN1261660C (en) | 2001-12-14 | 2001-12-14 | Thermal insulation wetting formwork for concrete formation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1261660C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735544A (en) * | 2012-06-25 | 2012-10-17 | 中铁第四勘察设计院集团有限公司 | Moisture retention method for unsaturated soil long-term consolidation test |
| CN104196232A (en) * | 2014-08-06 | 2014-12-10 | 辽宁舜德国泰科工贸有限公司 | Manufacturing and erecting method of removal-free fireproof and heat-insulating building component formwork |
| CN105201201A (en) * | 2015-09-06 | 2015-12-30 | 中铁十九局集团电务工程有限公司 | Intelligent temperature-control electrical tracing heat insulating formwork and electrical tracing method |
| CN107891515A (en) * | 2017-11-06 | 2018-04-10 | 北方工业大学 | Concrete self-curing test mold and using method thereof |
| CN108481535A (en) * | 2018-04-25 | 2018-09-04 | 中铁十九局集团第工程有限公司 | A kind of perfusion of plate-type ballastless track self-compacting concrete, peep hole curing means |
| CN110359428A (en) * | 2019-07-17 | 2019-10-22 | 长江水利委员会长江科学院 | A kind of installation method of the setting framework for mass concrete |
| CN111452203A (en) * | 2020-04-10 | 2020-07-28 | 南京永腾建设集团有限公司 | Water mist wetting type concrete curing system |
| CN111485711A (en) * | 2020-04-29 | 2020-08-04 | 梅国强 | Multipurpose building hollow formwork and concrete curing system and method |
| CN112854807A (en) * | 2021-01-22 | 2021-05-28 | 安徽师范大学 | Worker's civil engineering roofing fracture maintenance system |
| CN114960563A (en) * | 2022-04-29 | 2022-08-30 | 宜昌天宇科技有限公司 | Anti-aging structure and method along with increase of strength of dam concrete for long time |
-
2001
- 2001-12-14 CN CN 01142656 patent/CN1261660C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735544B (en) * | 2012-06-25 | 2015-08-12 | 中铁第四勘察设计院集团有限公司 | The long-term consolidation test method for moisturizing of unsaturated soil |
| CN102735544A (en) * | 2012-06-25 | 2012-10-17 | 中铁第四勘察设计院集团有限公司 | Moisture retention method for unsaturated soil long-term consolidation test |
| CN104196232A (en) * | 2014-08-06 | 2014-12-10 | 辽宁舜德国泰科工贸有限公司 | Manufacturing and erecting method of removal-free fireproof and heat-insulating building component formwork |
| CN104196232B (en) * | 2014-08-06 | 2016-03-16 | 辽宁舜德国泰科工贸有限公司 | One is exempted to tear the template manufacture of fireproof heat insulating building unit and mold method open |
| CN105201201A (en) * | 2015-09-06 | 2015-12-30 | 中铁十九局集团电务工程有限公司 | Intelligent temperature-control electrical tracing heat insulating formwork and electrical tracing method |
| CN107891515B (en) * | 2017-11-06 | 2020-05-12 | 北方工业大学 | Application method of concrete self-curing test mold |
| CN107891515A (en) * | 2017-11-06 | 2018-04-10 | 北方工业大学 | Concrete self-curing test mold and using method thereof |
| CN108481535A (en) * | 2018-04-25 | 2018-09-04 | 中铁十九局集团第工程有限公司 | A kind of perfusion of plate-type ballastless track self-compacting concrete, peep hole curing means |
| CN110359428A (en) * | 2019-07-17 | 2019-10-22 | 长江水利委员会长江科学院 | A kind of installation method of the setting framework for mass concrete |
| CN111452203A (en) * | 2020-04-10 | 2020-07-28 | 南京永腾建设集团有限公司 | Water mist wetting type concrete curing system |
| CN111485711A (en) * | 2020-04-29 | 2020-08-04 | 梅国强 | Multipurpose building hollow formwork and concrete curing system and method |
| CN112854807A (en) * | 2021-01-22 | 2021-05-28 | 安徽师范大学 | Worker's civil engineering roofing fracture maintenance system |
| CN114960563A (en) * | 2022-04-29 | 2022-08-30 | 宜昌天宇科技有限公司 | Anti-aging structure and method along with increase of strength of dam concrete for long time |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1261660C (en) | 2006-06-28 |
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Granted publication date: 20060628 Termination date: 20100114 |