CN105715040B - A kind of concrete temperature control template and its application method - Google Patents
A kind of concrete temperature control template and its application method Download PDFInfo
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- CN105715040B CN105715040B CN201610016516.4A CN201610016516A CN105715040B CN 105715040 B CN105715040 B CN 105715040B CN 201610016516 A CN201610016516 A CN 201610016516A CN 105715040 B CN105715040 B CN 105715040B
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- temperature control
- concrete
- control template
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- plate
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 29
- 238000009423 ventilation Methods 0.000 claims abstract description 27
- 210000003437 trachea Anatomy 0.000 claims abstract description 20
- 238000010276 construction Methods 0.000 claims abstract description 16
- 210000003205 muscle Anatomy 0.000 claims description 10
- 239000012774 insulation material Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 239000011490 mineral wool Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 12
- 238000004227 thermal cracking Methods 0.000 abstract description 12
- 238000005336 cracking Methods 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 9
- 210000003739 neck Anatomy 0.000 description 7
- 238000005345 coagulation Methods 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 239000012782 phase change material Substances 0.000 description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical group [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001669 calcium Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 230000000887 hydrating effect Effects 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E04G9/00—Forming or shuttering elements for general use
- E04G9/10—Forming or shuttering elements for general use with additional peculiarities such as surface shaping, insulating or heating, permeability to water or air
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a kind of concrete temperature control template and its application method, the temperature control template includes steel plate structure body, adiabator plate and reinforcing plate, steel plate structure body and adiabator plate are combined together to form hollow structure, reinforcing plate is covered on adiabator plate, the double-decker of reinforcing plate and adiabator plate is provided with ventilation interface, ventilation interface can be connected by trachea, connect the hollow structure of adjacent temperature control template, and the air-flow of design temperature is conveyed into hollow structure by appendix, air-flow carries out heat exchange by steel plate surface and concrete, so as to realize temperature adjusting of the temperature control template to concrete.It is especially long present invention is generally directed to wall body structure（Side）The thermal cracking problem of wall construction concrete, concrete is also easy to produce thermal cracking because molding temperature and aquation temperature rise are higher under solution summer high temperature environment, and solves the problems, such as that concreting is easily endured cold and causes structure destruction and inner table excessive temperature differentials and easily cause cracking initial stage under winter severe cold environment.
Description
Technical field
The present invention relates to technical field of concrete construction, and in particular to a kind of concrete temperature control template and its application method.
Background technology
The crack of wall body structure concrete, especially long wall construction and underground sidewall structure concrete is more universal, in the summer
The crack in Ji Gaowen times is particularly acute, and crack is mainly appeared on after form removal in several days, and crack form is mainly thermal cracking,
By taking the sidewall structure concrete of underground as an example, in Practical Project, reach more than 35 DEG C in molding temperature, aquation temperature rise reaches 30 DEG C
The situation for occurring interval 0.5m~3.0m mono- thermal cracking during the above, on concrete wall surface is relatively conventional.Solves this at present
The technological means in kind crack mainly adds calcium class swelling agent and heat of hydration controlled material, although can significantly alleviate metope cracking
Degree, but still can not thoroughly solve.Domestic and foreign scholars research shows that the molding temperature and adiabatic temperature rise of concrete are to influence to mix
An important factor for solidifying local products life thermal cracking, during practice of construction, there is a certain degree of radiating in concrete structure, mix
Solidifying native internal temperature does not reach the temperature under adiabatic condition, and therefore, the aquation temperature rise of concrete is become to control concrete temperature
One important indicator in crack.
The thickness of wall body structure concrete is typically between 200mm~1200mm, and in summer high temperature, thermal cracking is more
It is common, especially especially pronounced when thickness of wall body reaches more than 500mm but widely used in engineering construction at present《Substantially
Product concrete construction specification》In temperature control index (in such as the table temperature difference be not more than 25 DEG C) carry out temperature control, largely put into practice table
Bright, the temperature control index is difficult to be applied to wall body structure concrete, and the wall body structure being particularly unsuitable under summer high temperature environment mixes
Solidifying soil, most efficient method is that molding temperature and the aquation temperature rise of concrete is greatly reduced, but is difficult in the prior art.
In the prior art, Application No. CN201410626807.6 patent discloses a kind of intelligent temperature control concrete heated die plate construction
Device, the patent solves the problems, such as that cold weather concrete hull-skin temperature is low by implementing electrical heating to concrete blinding, but the skill
Art method is not easy to the splicing installation of template, by the form of conduction, is also unfavorable for the security constructed, and in work progress
In be easily caused line broken circuit and temperature control is failed；Patent ZL201010179347.9 discloses a kind of phase-change temperature control large-volume coagulation
Clay model plate and preparation method thereof, phase-change material is wrapped in concrete blinding by this patent, utilizes the phase-change accumulation energy of phase-change material
Characteristic carries out temperature adjusting to concrete, but the technical method is limited in that, the amount of the energy storage of phase-changing energy storage material is limited,
Narrower to the temperature-control range of concrete, for the higher concrete of aquation temperature rise, its effect can be ignored substantially, it is difficult to reach
To preferable technique effect.
Therefore, to solve the problems, such as the thermal cracking of wall body structure concrete, the bright one kind of beard and hair has targetedly technical side
Method, fundamentally reduce concrete and produce the risk of thermal cracking, or thoroughly solve the problems, such as concrete thermal cracking, be wall knot
The long durability of structure concrete provides reliable technical guarantee.
The content of the invention
For wall body structure concrete, especially long (side) wall construction concrete, solves concrete under summer high temperature environment
Molding temperature and aquation temperature rise it is higher and be also easy to produce the problem of thermal cracking, and solve concrete under winter severe cold environment and pour
Build and easily endure cold initial stage and the problem of structure destruction and easily cracking inner table excessive temperature differentials occur, the invention provides a kind of coagulation
Native temperature control template and its application method, are specifically realized in：
A kind of concrete temperature control template, including steel plate structure body, adiabator plate and reinforcing plate；The steel plate structure body is set
There are U-type groove and erecting bed, it is hollow hollow knot that adiabator plate makes temperature control template form inside with U-type groove and erecting bed cooperation
Structure, reinforcing plate are covered on adiabator plate, and the double-decker of reinforcing plate and adiabator plate is provided with ventilation interface, and ventilation connects
Mouth is connected with the hollow structure of temperature control template, and ventilation interface can install trachea and appendix, and trachea can be by adjacent temperature control
The ventilation interface connection of template, connects the hollow structure of adjacent temperature control template, and appendix can be by ambient atmos through interface of ventilating
It is passed into the hollow structure of temperature control template；
The reinforcing plate is provided with screwed hole, and the steel plate structure body is provided with thread groove, and reinforcing plate is logical with steel plate structure body
Bolt connection is crossed to fix.
The steel plate structure body includes steel plate surface, neck and card muscle, and steel plate structure body is with mixing when the steel plate surface is constructs
The contact surface of soil is coagulated, the neck is located at steel plate structure body lower end, and the card muscle is located at steel plate structure body upper end, two pieces of temperature control moulds
Plate can be vertically connected with by the cooperation of neck and card muscle.
The concrete temperature control template is rectangle structure, is respectively provided with four angles of temperature control template logical described in one
Gas interface；
The trachea and appendix are rubber insulation material, to reduce temperature loss of the air-flow in conveying.
The reinforcing plate is provided with 3~5 fluting square tubes, to strengthen the endurance of reinforcing plate.
The adiabator plate is aluminum silicate insulation material, glass fibre thermal insulation material, insulating rubber plastic, rock wool heat-preservation
One kind in material or polyphenyl plate heat preserving material.
Present invention also offers a kind of application method of concrete temperature control template, comprise the following steps：
(1) according to sequence of construction, first the reinforcing bar of sidewall structure is tied, the temperature control template is reused and builds form walls,
The hollow structure inside all temperature control templates is together in series using trachea, and reserved ventilation interface is as gas outlet；
(2) before concrete pouring construction starts, temperature control template is passed through by appendix using refrigerating and heating machine and appointed
The air-flow of meaning design temperature, the air-flow of the design temperature flow in the hollow structure of series connection, make the steel plate surface liter of concrete
Temperature or cooling, reach the balance with the design temperature；
(3) casting concrete, is persistently passed through the air-flow of design temperature to temperature control template, and the adiabator plate can avoid
The air-flow of design temperature produces heat exchange with external environment, the air-flow of design temperature is carried out heat by steel plate surface and concrete
Amount is transmitted, and the air-flow of design temperature constantly flows, and concrete persistently carries out temperature exchange with steel plate surface, promotes the temperature of concrete
Constantly decline or raise, so as to realize the temperature adjusting to concrete.
It is described not sealed with trachea or a sequence of ventilation interface of appendix, usable sealing-plug.
It is considered that when the areal extent of form walls is larger, disposably the hollow structure of all temperature control templates is together in series,
Temperature control effect can be affected, and the form walls that temperature control template is built can also be divided into at least two connections by trachea connection
Part, ventilation temperature control is carried out to the part of each connection, to realize preferable temperature control effect.
Beneficial effects of the present invention：Temperature control template and its application method provided by the invention can realize that template is filled with concrete
Point heat exchange, concrete can be made to cool or heat up since pour into the mold just, be greatly reduced or raise before concrete hardening
The temperature of concrete, that is, being greatly reduced or raising the molding temperature of concrete, this is that prior art can not be realized；This
The technological means of invention,, can also be in the temperature of concrete in addition to the temperature before concrete hardening can be greatly reduced in summer high temperature
The stage of liter persistently gives concrete cooling, can be effectively reduced the aquation temperature rise of concrete, shortens the temperature of concrete temperature rise and temperature drop
The change course time is spent, can largely improve the volume stability of concrete structure during temperature rise and temperature drop；In the summer
Under season hot environment, without taking relatively complicated but little effect concrete molding temperature control method, coagulation after form removal again
Soil temperature degree is close to environment temperature or low compared with environment temperature, without carrying out insulated curing again；Severe cold area in the winter time, can pass through to
Temperature control template is passed through warm air and realizes heating to concrete, it is ensured that concrete freezed damage and will not ensure concrete
In the table temperature difference will not be excessive and cause concrete cracking.
Brief description of the drawings
Fig. 1 is the lateral cross-sectional view of temperature control formwork structure.
Fig. 2 is steel plate structure side to cross-sectional view.
Fig. 3 is the lateral cross-sectional view of reinforcing plate.
Fig. 4 is two pieces of temperature control template assembly structural representations.
Fig. 5 is the structural representation of ventilation interface sealing-plug sealing.
Fig. 6 is the planar structure schematic diagram of temperature control template reinforcing plate side.
Fig. 7 is the structural representation using temperature control template of the present invention.
The assembling schematic diagram of temperature control template when Fig. 8 is concreting.
It is labeled as in Fig. 1~Fig. 7：1 steel plate structure body, 2 adiabator plates, 3 reinforcing plates, 4 ventilation interfaces, 5 bolts, 6
Hollow structure, 7 card muscle, 8 tracheas, 9 thread grooves, 10 necks, 11 screwed holes, 12 fluting square tubes, 13 sealing-plugs, 14 appendixs,
15 refrigerating and heating machines, 16 steel plate surfaces, 17U type grooves, 18 erecting beds, 19 form walls, 20 air stream transportation directions, 21 concrete.
Embodiment
A kind of concrete temperature control template, including steel plate structure body 1, adiabator plate 2 and reinforcing plate 3, steel plate structure body 1 are set
There are U-type groove 17 and erecting bed 18, adiabator plate 2 coordinates with U-type groove 17 and erecting bed 18 makes temperature control template form inside as sky
The hollow structure 6 of the heart, reinforcing plate 3 are covered on adiabator plate 2, and the double-decker of reinforcing plate 3 and adiabator plate 2 is provided with
Ventilation interface 4, ventilation interface 4 are connected with the hollow structure 6 of temperature control template, and ventilation interface 4 can install trachea 8 and appendix
14, trachea 8 can connect the ventilation interface 4 of adjacent temperature control template, connect the hollow structure 6 of adjacent temperature control template, gas transmission
Ambient atmos can be passed into the hollow structure 6 of temperature control template by pipe 8 through interface 4 of ventilating；
The steel plate structure body 1 includes steel plate surface 16, neck 10 and card muscle 7, steel plate knot when the steel plate surface 16 is constructs
The contact surface of structure body and 1 concrete, the neck 10 are located at the lower end of steel plate structure body 1, and the card muscle 7 is located at steel plate structure body
1 upper end, two pieces of temperature control templates can be vertically connected with by the cooperation of neck 10 and card muscle 7；
The concrete temperature control template is rectangle structure, and a ventilation interface is respectively provided with four angles of temperature control template
4；
The reinforcing plate is provided with screwed hole 11, and the steel plate structure body is provided with thread groove 9, reinforcing plate 3 and steel plate structure body 1
It is to be connected by bolt 5；
The trachea 8 and appendix 14 are rubber insulation material, to reduce temperature loss of the air-flow in conveying；
The reinforcing plate 3 is provided with 3~5 fluting square tubes 12, to strengthen the endurance of reinforcing plate 3；
The adiabator plate 2 is glass fibre thermal insulation material；
A kind of application method of concrete temperature control template, comprises the following steps：
(1) after reinforcing bar is tied, form walls 19 are built using the temperature control template, using trachea 8 by all temperature control moulds
The hollow structure 6 of intralamellar part is together in series, and reserved ventilation interface 4 is used as gas outlet, not with trachea 8 or appendix 14
A sequence of ventilation interface 4, is sealed using sealing-plug 13；
(2) before the pouring construction of concrete 21 starts, using refrigerating and heating machine 15 by appendix 14 to temperature control template
It is passed through the air-flow of design temperature, the air-flow of design temperature (the air stream transportation side indicated in such as Fig. 7 in the hollow structure 6 of series connection
To 20) flowing, the steel plate surface 16 of concrete is heated up or is cooled, reach the balance with design temperature；
(3) casting concrete 21, are persistently passed through the air-flow of design temperature to temperature control template, and concrete 21 produces with steel plate surface 16
Raw temperature transmission, the air-flow of design temperature constantly flow, and concrete 21 persistently carries out temperature exchange with steel plate surface 16, promotes coagulation
The temperature of soil 21 is constantly down or up, so as to realize temperature adjusting of the temperature control template to concrete 21；
It is considered that when the areal extent of form walls 19 is larger, disposably the hollow structure 6 of all temperature control templates has been connected
Come, temperature control effect can be affected, and the form walls 19 that temperature control template is built can also be divided into at least two by the connection of trachea 8
The part of individual connection, ventilation temperature control is carried out respectively to the part of each connection, to realize preferable temperature control effect.
Embodiment
Wall construction on the downside of somewhere, thickness 0.8m, height 6m, it is 20m that single, which pours length, 34.2 DEG C of environment temperature, is used
C40 concrete pouring constructions, when not carrying out molding temperature control to concrete, the molding temperature of concrete is 36.4 DEG C, water
Change 33.0 DEG C of temperature rise, engineering effort shows：Side wall serious cracking, every 0.8~1.5 meter of thermal cracking；
To reduce the thermal cracking of concrete, through the technological means such as supercooling raw material, on the rocks, by concrete molding temperature
Control is at 31.5 DEG C, and 32.6 DEG C of aquation temperature rise, engineering effort shows：Side wall serious cracking, every 1.0~1.6 meters of temperature are split
Seam；
The technique effect constructed twice above shows, under summer high temperature environment, the engineering concrete is only reduced into mould temperature
The DeGrain of 5 DEG C or so of degree.
Using the temperature control template molding of the present invention, the molding temperature of concrete is 36.6 DEG C, by appendix to temperature control mould
5 DEG C of low-temperature airflow is passed through in plate, temperature control template carries out heat exchange with concrete, and the presetting period for measuring concrete is 15h,
The temperature of concrete will be 16.5 DEG C when pre-hardening, and the temperature of concrete is reduced to 14.2 DEG C during final set, with the progress of hydrated cementitious,
When concrete temperature reaches 25 DEG C, the air-flow output temperature of refrigerating and heating machine is set as TAir-flow, meet TAir-flow=TConcrete- 20, when
Concrete is measured after pouring construction 38h and reaches Wen Feng, 25.8 DEG C of concrete hydrating temperature rise, engineering effort shows：Side wall is without temperature
Crack produces, and technique effect is good.
Claims (9)
- A kind of 1. concrete temperature control template, it is characterised in that：Including steel plate structure body (1), adiabator plate (2) and reinforcing plate (3)；The steel plate structure body (1) is provided with U-type groove (17) and erecting bed (18), adiabator plate (2) and U-type groove (17) and installation It is hollow hollow structure (6) that platform (18) cooperation, which makes temperature control template form inside, and reinforcing plate (3) is covered in adiabator plate (2) On；The double-decker of reinforcing plate (3) and adiabator plate (2) is provided with ventilation interface (4), ventilation interface (4) and temperature control template Hollow structure (6) be connected, ventilation interface (4) trachea (8) and appendix (14) can be installed；Trachea (8) can will be adjacent Ventilation interface (4) connection of temperature control template, connects the hollow structure (6) of adjacent temperature control template, appendix (14) can be by the external world Gas is passed into the hollow structure (6) of temperature control template through interface (4) of ventilating；The reinforcing plate (3) is provided with screwed hole (11), and the steel plate structure body (1) is provided with thread groove (9), reinforcing plate (3) and steel Panel structure (1) is connected by bolt (5).
- 2. a kind of concrete temperature control template according to claim 1, it is characterised in that the steel plate structure body (1) includes Steel plate surface (16), neck (10) and card muscle (7), steel plate structure body (1) and concrete (21) when the steel plate surface (16) is constructs Contact surface, the neck (10) is located at steel plate structure body (1) lower end, and the card muscle (7) is located at steel plate structure body (1) upper end, Two pieces of temperature control templates can be vertically connected with by the cooperation of neck (10) and card muscle (7).
- 3. a kind of concrete temperature control template according to claim 2, it is characterised in that the concrete temperature control template is length Square structure, the ventilation interface (4) described in one is respectively provided with four angles of temperature control template.
- 4. a kind of concrete temperature control template according to claim 2, it is characterised in that the trachea (8) and appendix (14) it is rubber insulation material.
- A kind of 5. concrete temperature control template according to claim 2, it is characterised in that the reinforcing plate (3) be provided with 3~ 5 fluting square tubes (12).
- 6. a kind of concrete temperature control template according to claim 2, it is characterised in that the adiabator plate (2) is silicon One in sour aluminium heat insulation material, glass fibre thermal insulation material, insulating rubber plastic, rock wool heat-preservation material or polyphenyl plate heat preserving material Kind.
- A kind of 7. application method of concrete temperature control template described in any one of claim 2 to 6, it is characterised in that including with Lower step：(1) according to sequence of construction, first the reinforcing bar of sidewall structure is tied, the temperature control template is reused and builds form walls (19), The hollow structure (6) inside all temperature control templates is together in series using trachea (8), and a reserved ventilation interface (4) is made For gas outlet；(2) before concrete pouring construction starts, temperature control template is led to by appendix (14) using refrigerating and heating machine (15) Enter the air-flow of any design temperature, the air-flow of the design temperature flows in the hollow structure (6) of series connection, makes the steel of concrete Plate face (16) heats up or cooling, reaches the balance with the design temperature；(3) casting concrete, is persistently passed through the air-flow of design temperature to temperature control template, and the adiabator plate (2) avoids setting The air-flow of temperature produces heat exchange with external environment, the air-flow of design temperature is entered by steel plate surface (16) and concrete (21) Row heat transfer, the air-flow of design temperature constantly flow, and concrete (21) persistently carries out temperature exchange with steel plate surface (16), promotes The temperature of concrete constantly declines or rise, so as to realize the temperature adjusting to concrete.
- A kind of 8. concrete temperature control template according to claim 7, it is characterised in that it is described not with trachea (8) or defeated The a sequence of ventilation interface (4) of tracheae (14), sealing-plug (13) can be used to seal.
- A kind of 9. concrete temperature control template according to claim 8, it is characterised in that the mould that temperature control template can be also built Board wall (19) is divided into the part of at least two connections by trachea (8) connection, and ventilation temperature control is carried out to the part of each connection.
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| CN201610016516.4A CN105715040B (en) | 2016-01-11 | 2016-01-11 | A kind of concrete temperature control template and its application method |
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| CN201610016516.4A CN105715040B (en) | 2016-01-11 | 2016-01-11 | A kind of concrete temperature control template and its application method |
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| CN105715040A CN105715040A (en) | 2016-06-29 |
| CN105715040B true CN105715040B (en) | 2017-11-24 |
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| CN103042681A (en) * | 2011-10-11 | 2013-04-17 | 晟铭电子科技股份有限公司 | Hot press molding device and method thereof |
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| CN203097276U (en) * | 2013-02-26 | 2013-07-31 | 中国十七冶集团有限公司 | Electric-heating heat preservation formwork |
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| CN203475819U (en) * | 2013-09-16 | 2014-03-12 | 东海建设集团有限公司 | Combined construction formwork |
| CN104499716A (en) * | 2014-12-11 | 2015-04-08 | 中交第一公路工程局有限公司 | Insulation device for concrete winter construction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FR3129962A1 (en) * | 2021-12-06 | 2023-06-09 | Sateco | Formwork panel comprising a hot air supply opening, assembly of a formwork panel and a heating system and method of heating. |
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