CN108625597A - A kind of concreting in cold-weather method - Google Patents
A kind of concreting in cold-weather method Download PDFInfo
- Publication number
- CN108625597A CN108625597A CN201810438112.3A CN201810438112A CN108625597A CN 108625597 A CN108625597 A CN 108625597A CN 201810438112 A CN201810438112 A CN 201810438112A CN 108625597 A CN108625597 A CN 108625597A
- Authority
- CN
- China
- Prior art keywords
- resistance wire
- concrete
- concreting
- resistance
- temperature
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0263—Hardening promoted by a rise in temperature
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/28—Safety or protective measures preventing damage to building parts or finishing work during construction against unfavourable weather influence
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The present invention relates to a kind of concreting in cold-weather methods; the present invention from the sorting of concrete, mix, transport, pour before and pour middle process; maintenance after to concreting; control opening temperature, molding temperature and the curing temperature of concrete; ensure that concrete is not endured cold before pouring; the hydration for accelerating cement after pouring, solves in cold environment, the technical barrier of concrete construction.Architectural design standard, building products quality outstandingization, field management can be pushed neatly to change safe, strong basic guarantee is provided for building standardization, diversification, intelligence.
Description
Technical field
The present invention relates to concrete construction method technical field, the concrete construction under especially a kind of winter cold environment
Method.
Background technology
Only it is merely to be supported after concreting when concreting in cold-weather currently, at home in building field
Shield.Common concrete construction method has straw screen or mat covering regenerative process, brooder method, electric blanket method etc., and straw screen or mat covering regenerative process is only
It can be applied at minus 5 DEG C；Brooder method need to put into a large amount of artificial and materials, and construction speed is slow, and has work with torches, there is very big peace
Full hidden danger；Electric blanket method cost is high.Meanwhile above-mentioned several method is difficult to control to the internal-external temperature difference of concrete,
There are serious hidden danger of quality.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of concreting in cold-weather methods, can be true
The quality for protecting concrete creates conditions for the continuous construction of engineering, is provided a strong guarantee to accelerate construction progress.
To achieve the above object, present invention employs following technical schemes：
A kind of concreting in cold-weather method, which is characterized in that include the following steps：
The mixing of concrete：Portland cement or Portland cement, strength of cement grade is selected to be more than or equal to 42.5,
Minimum cement dosage is more than or equal to 300kg/m3, the ratio of mud is less than or equal to 0.6；Remove scars such as ice, snow in aggregate and
The minerals of easy bursting by freezing；The antifreezing agent with diminishing bleed ingredient is added, and the air content of antifreezing agent is less than or equal to 4%；Per side
The hot water that total water content 60% is mixed in concrete mixes and stirs, and hot water temperature is between 50-60 DEG C so that concrete opening temperature reaches
To 15 DEG C；
The transport of concrete：The vehicle tank whole body package mineral wool and plastic skin of concrete transportation trucd mixer are protected
Temperature；Before concreting, the mortar using temperature more than or equal to 10 DEG C soaks concrete conveying pipe, and when concreting stirs
It mixes and is more than or equal to 180s, it is ensured that the workability and mobility of concrete, and ensure that the molding temperature of concrete is more than or equal to 5 DEG C；
The maintenance of concrete：After the completion of concreting, layer of plastic film moisturizing and one layer are covered in concrete surface
Pearl cotton is kept the temperature；Resistance wire is bound on reinforcing bar simultaneously, and resistance wire inlet wire is heated by low pressure, the aquation of cement is accelerated to make
With making concrete obtain and be not subjected to the minimum intensity of freeze injury.
Further, further include the quality management and control of concrete in the curing step of the concrete：Resistance wire is begun to warm up
When, the output voltage of heater is 45V, when temperature rise is to 10 DEG C, the temperature is kept one hour, then by the output of heater
Voltage is adjusted to 55V, and the heating rate for controlling concrete is less than or equal to 10 DEG C per hour, the temperature control in entire maintenance processes
Between 25 DEG C to 40 DEG C.
Further, after concrete is begun to warm up, in thermometric is primary per hour in first 24 hours, heating rate is controlled 5
DEG C per hour, if per hour more than 5 DEG C, turning down the voltage gear of heater；After being heated beyond 24 as a child, survey within every 2 hours
It is warm primary, when finding that the temperature of temperature measuring point is more than 40 DEG C, heater is closed in time and stops heating, waits for that temperature is reduced to 25 DEG C
When, continue to open heater heating.
Further, the maintenance processes of entire concrete are 72 hours, or when the observed strength of concrete reaches 70%
Stop heating curing.
Further, the method for arranging of the temperature measuring point is as follows：Before casting concrete, by thermometric line immobilization with adhesive tape in short steel
On muscle, thermometric contact exposes reinforcing bar 2cm, by the drawn pre-buried thermometric line of temperature measuring point layout drawing；Thermometric line cloth on its center line beam
The axis perpendicular to beam is set, buried depth is the 1/3 to 1/2 of deck-molding；Floor thermometric line is by the arrangement of 100 ㎡ every, and perpendicular to plate face,
Buried depth is the 1/3 to 1/2 of plate thickness；The pre-buried thermometric line of every concrete column, is arranged in the middle part of concrete column, depth is column
Wide 1/2；The buried depth of wall thermometric line is the 1/2 of thickness of wall body, and wall thermometric line is by every arrangement of 100 ㎡, when the face of wall
When product is less than 50 ㎡, a pre-buried thermometric line is only needed.
Further, the method for arranging of the resistance wire is as follows：
The arrangement of stud resistance silk：Four facades of cylinder reinforcing bar are followed successively by ABCD, by one end of resistance wire from the faces cylinder A
The vertical reinforcement bottom of the leftmost side penetrates, and extends upwardly to column body concrete and pours below top surface, then by resistance wire to right folding 90
After degree binding, it is folded under resistance wire at the stirrup of first of cylinder bottom, then 90 degree of right folding, successively passes through resistance wire by broken line type
Tetra- facades of ABCD, are finally pierced by from D right side of face bottom, and resistance wire and reinforcing bar or stirrup binding are secured in placement process；It will be electric
Resistance silk is connected by conducting wire with the main line for connecting electric heater in the end of two facades of AD；When entrance cylinder template erection stage
When, the end palpus indwelling of resistance wire is in inside concrete；
The arrangement of wall resistance wire：Resistance wire is arranged in the two sides AB of wall steel bar, by resistance wire from adjacent with the faces A
Wall bottom penetrate, extend to walls concrete and pour below top surface, will be under resistance wire then by resistance wire to 90 degree of right folding
It is folded at the horizontal reinforcement of first of wall steel bar bottom, then 90 ° of right folding, resistance wire is arranged in reinforcing steel bars of wallboards successively by broken line type
The faces A, resistance wire and reinforcing bar or pull hook banding fixed in placement process；When wall B surface resistance silks are installed, by resistance wire and wall
The adjacent wall bottom in the faces B penetrates, and follow-up method for arranging is identical as the faces A；The both ends of the resistance wire on the two sides AB are connect with conducting wire,
Into template erection stage, conducting wire is reserved outside template in template installation process, template connects conducting wire and main line after installation is complete
It connects, when connection follows ab, ac, and bc circle principles ensure the balance of electricity on every main line, finally connect main line and heater
It connects；
The arrangement of plate resistance wire：Resistance wire is penetrated from plate lower layer reinforcing bar, with reference to the arrangement of wall resistance wire, equally
Resistance wire is arranged on plate lower layer reinforcing bar by broken line type；The both ends of resistance wire are connect with conducting wire, and conducting wire is connect with main line, connection
When follow ab, ac, bc circle principles ensure the balance of electricity on every main line, finally connect main line with heater；
The arrangement of beam resistance wire：Resistance wire is arranged in beam bottom and beam both sides, and secured with reinforcing bar or stirrup binding,
The both ends of resistance wire are connect with conducting wire, and conducting wire is reserved the length more than plate face reinforcing bar, subsequently into beam side erection stage,
Conducting wire is connect after installation is complete by template with main line, and when connection follows ab, ac, and bc circle principles ensure electricity on every main line
Balance, finally main line is connect with heater.
Further, the method for arranging of the resistance wire is as follows：The resistance wire uses 1.2mm resistance wires and single resistance silk
Length be less than or equal to 40 meters, a heater access resistance wire total length be less than or equal to 1000 meters.
Further, the arrangement spacing between the beam resistance wire and plate resistance wire is 200mm, columnar resistance silk and beam resistance wire
Between arrangement spacing be 250mm.
Further, the conducting wire is 4mm2Aluminum core line, the main line are 95mm2Aluminum core line.
The beneficial effects of the present invention are：
1, the present invention from the sorting of concrete, mix, transport, pour before and pour middle process, to after concreting
Maintenance, controls the opening temperature, molding temperature and curing temperature of concrete, it is ensured that concrete is not endured cold before pouring, after pouring
The hydration for accelerating cement, solves in cold environment, the technical barrier of concrete construction.Architectural design mark can be pushed
Safe is neatly changed in standardization, building products quality outstandingization, field management, is provided with for building standardization, diversification, intelligence
The basic guarantee of power.
2, it is constructed, is avoided because weather reason causes engineering to stop work in winter convenient for concrete using the method for the present invention,
Accelerate project progress, it is ensured that construction quality.
3, this invention simplifies the organizations of labour, shorten construction period, reduce material and machinery consumes, improve working conditions,
Ensure construction quality, there is significant economic benefit.
4, the present invention is suitable for that architectural engineering, municipal works, road engineering, hydraulic engineering etc. are all to use cast-in-place concrete
Engineering position, application prospect is extensive.
Description of the drawings
Fig. 1 is stud resistance silk of the present invention, conducting wire, main line and heater connection diagram；
Fig. 2 is the installation section view status architecture schematic diagram of stud resistance silk of the present invention；
Fig. 3 is that wall resistance wire of the present invention installs section view status diagram；
Fig. 4 is wall resistance wire scheme of installation of the present invention；
Fig. 5 is beam resistance wire scheme of installation of the present invention.
Specific implementation mode
The present invention will be further described below in conjunction with the accompanying drawings：
A kind of concreting in cold-weather method, includes the following steps：
The mixing of concrete：Portland cement or Portland cement, strength of cement grade is selected to be more than or equal to 42.5,
Minimum cement dosage is more than or equal to 300kg/m3, the ratio of mud is less than or equal to 0.6.Remove scars such as ice, snow in aggregate and
The antifreezing agent with diminishing bleed ingredient is added in the minerals of easy bursting by freezing, and the air content of antifreezing agent is less than or equal to 4%, can be with
The water content in concrete is effectively reduced, the freezing point of water is reduced, makes cement remain to continue aquation under subzero temperature, improves concrete
Frost resistance.To ensure that winter construction concrete temperature, the hot water that total water content 60% is mixed in every side's concrete mix and stir, hot water temperature
Degree is between 50-60 DEG C so that concrete opening temperature reaches 15 DEG C.
The transport of concrete：It is too fast to prevent heating concrete from radiating in transportational process, to concrete transportation trucd mixer
Vehicle tank whole body package mineral wool and plastic skin, fixed, kept the temperature by iron wire.Before concreting, using temperature
Mortar more than or equal to 10 DEG C soaks concrete conveying pipe, when concreting stirring be more than or equal to 180s, it is ensured that concrete
Workability and mobility, and ensure concrete molding temperature be more than or equal to 5 DEG C.
The maintenance of concrete：After the completion of concreting, layer of plastic film moisturizing and one layer are covered in concrete surface
The pearl cotton of 10mm thickness is kept the temperature；Resistance wire is bound on reinforcing bar simultaneously, and resistance wire inlet wire is heated by low pressure, accelerates cement
Hydration makes concrete obtain the minimum intensity for being not subjected to freeze injury.
In the maintenance of concrete, need to carry out management and control to the quality of concrete：When resistance wire is begun to warm up, setting heating
The output voltage of device is 45V, when temperature rise is to 10 DEG C, the temperature is kept one hour, then by the output voltage tune of heater
Whole is 55V, and the heating rate for controlling concrete is less than or equal to 10 DEG C per hour, and the temperature in entire maintenance processes is controlled at 25 DEG C
To between 40 DEG C.
Specifically, after concrete is begun to warm up, in thermometric is primary per hour in first 24 hours, heating rate is controlled 5
DEG C per hour, if per hour more than 5 DEG C, turning down the voltage gear of heater；After being heated beyond 24 as a child, survey within every 2 hours
It is warm primary, when finding that the temperature of temperature measuring point is more than 40 DEG C, heater is closed in time and stops heating, waits for that temperature is reduced to 25 DEG C
When, continue to open heater heating.
The maintenance processes of entire concrete are controlled at 72 hours, or when the observed strength of concrete reaches 70%
Stop heating curing.
The specific method for arranging of above-mentioned temperature measuring point is as follows：Thermometric line should be located at representational structure position in mixed soil structure
With temperature change is big, easy cooling position.Before casting concrete, by thermometric line immobilization with adhesive tape on bar dowel, thermometric contact dew
Go out reinforcing bar 2cm, by the drawn pre-buried thermometric line of temperature measuring point layout drawing.
For thermometric line arrangement perpendicular to the axis of beam, buried depth is 1/3 to 1/2 place of deck-molding on its center line beam；Floor thermometric line
By every arrangement of 100 ㎡, and perpendicular to plate face, buried depth is the 1/3 to 1/2 of plate thickness；The pre-buried thermometric line of every concrete column,
It is arranged in the middle part of concrete column, depth is wide 1/2 of column；The buried depth of wall thermometric line is the 1/2 of thickness of wall body, wall thermometric
Line only needs a pre-buried thermometric line by every arrangement of 100 ㎡ when the area of wall is less than 50 ㎡.
The arrangement of resistance wire in concrete reinforcement structure includes stud resistance silk arrangement, wall resistance wire arrangement, plate electricity
Silk arrangement and the arrangement of beam resistance wire are hindered, the specific method is as follows：
The arrangement of stud resistance silk：
Shown in referring to Fig.1, four facades of cylinder reinforcing bar are followed successively by ABCD, and resistance wire 3 enters from the faces A, in placement process
With 2 banding fixed of reinforcing bar 1 and stirrup, after be pierced by from the faces D.Resistance wire is connect with conducting wire 1.2, and conducting wire 1.2 is connect with main line 1.3,
Main line 1.3 is connect with heater 1.1.
Arrangement of the resistance wire on cylinder reinforcing bar, shown in Fig. 2, by one end of resistance wire 2.3 from cylinder A
The vertical reinforcement bottom of the face leftmost side penetrates, and extends upwardly to column body concrete and pours 50mm below top surface, then by resistance wire 2.3
To after 90 degree of bindings of right folding, it is folded under resistance wire 2.3 at the stirrup of first of cylinder bottom, then 90 degree of right folding, successively by broken line type
Resistance wire 2.3 is passed through into tetra- facades of ABCD, is finally pierced by from D right side of face bottom, resistance wire 2.3 and reinforcing bar in placement process
2.1 or stirrup 2.2 bind securely；Resistance wire 2.3 is passed through into conducting wire 2.4 and the master for connecting electric heater in the end of two facades of AD
Line connects；When entering cylinder template erection stage, the end palpus indwelling of resistance wire 2.3 is in inside concrete.
The arrangement of wall resistance wire：
With reference to shown in Fig. 3, resistance wire 3.2 is arranged in the two sides AB of wall steel bar, in placement process resistance wire 3.2 with
3.3 banding fixed of reinforcing bar 3.1 or pull hook.
Specifically, with reference to shown in Fig. 4, resistance wire 4.1 is penetrated from the wall bottom from wall outer side 200mm, is extended to
Walls concrete pours below top surface at 50mm, and is bound securely with vertical reinforcement 4.2, then by resistance wire 4.1 to right folding 90
Degree, will be folded under resistance wire at first of wall steel bar bottom horizontal reinforcement 4.2, then 90 ° of banding fixeds of right folding, by broken line type according to
The secondary faces A that resistance wire 4.1 is arranged in reinforcing steel bars of wallboards；When wall B surface resistance silks are installed, by resistance wire 4.1 from from wall outer side
The wall bottom of 400mm penetrates, and follow-up method for arranging is identical as the faces A；By the both ends of the resistance wire 4.1 on the two sides AB and conducting wire 4.3
Connection, into template erection stage, reserves conducting wire 4.3 outside template in template installation process, and template is after installation is complete, by conducting wire
4.3 connect with main line 4.4, and when connection follows ab, ac, and bc circle principles ensure the balance of electricity on every main line 4.4, finally
Main line 4.4 is connect with heater 4.5.
The arrangement of plate resistance wire：
The arrangement of plate resistance wire is identical as the arrangement of wall resistance wire, and resistance wire is worn from plate lower layer reinforcing bar
Enter, with reference to the arrangement of wall resistance wire, equally resistance wire is arranged on plate lower layer reinforcing bar by broken line type；The two of resistance wire
End connect with conducting wire, and conducting wire is connect with main line, and when connection follows ab, ac, bc circle principles, and electricity puts down on every main line of guarantee
Main line, finally connect by weighing apparatus with heater.
The arrangement of beam resistance wire：
Resistance wire 6.1 is arranged in beam bottom and beam both sides (when beam width is more than 500mm, are then needed in Liang Zhongbu
Set resistance wire), back portion need not arrange resistance wire, can be heated using the resistance wire that board bottom is arranged.Resistance wire 6.1 and steel
Muscle 6.2 is bound securely, and the both ends of resistance wire 6.1 are connect with conducting wire 6.3, and conducting wire 6.3 is reserved the length more than plate face reinforcing bar,
Subsequently into beam side erection stage, conducting wire 6.3 is connect after installation is complete by template with main line 6.4, and when connection follows ab, ac,
Bc circle principles ensure the balance of electricity on every main line 6.4, finally connect main line 6.4 with heater 6.5.
In placement process, the arrangement spacing between beam resistance wire and plate resistance wire is 200mm, columnar resistance silk and beam resistance wire
Between arrangement spacing be 250mm.
Above-mentioned resistance wire is all made of 1.2mm resistance wires and the length of single resistance silk is less than or equal to 40 meters, and conducting wire is all made of
4mm2Aluminum core line, main line are all made of 95mm2Aluminum core line.The resistance wire total length of one heater access is more less than or equal to 1000 meters
When platform heater works at the same time, the arrangement of resistance wire required for every heater is completely separable according to casting direction, completes one
The heater that panel region turns on the region is begun to warm up, and cannot be waited reheating after the completion of large area concretes, be prevented from most starting
It endures cold at the concrete position poured.
In the winter construction of Byelorussia's Commercial Complex project, the method for the present invention is put into practice, using this hair
To being controlled and being conserved before concreting, in pouring, after pouring, concrete detects bright method by live entity, strong
Degree is satisfied by design requirement.The method of the present invention is utilized by practical measuring and calculating, 436 Yuan/㎡ of material can be saved, add up to and save 301.5
Wan Yuan is shortened the construction period about 2 months, produces great duration benefit and economic benefit.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
It encloses and is defined, under the premise of not departing from design spirit of the present invention, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made should all be fallen into the protection domain of claims of the present invention determination.
Claims (9)
1. a kind of concreting in cold-weather method, which is characterized in that include the following steps：
The mixing of concrete：Portland cement or Portland cement, strength of cement grade is selected to be more than or equal to 42.5, minimum
Cement consumption is more than or equal to 300kg/m3, and the ratio of mud is less than or equal to 0.6；It removes the scars such as ice, the snow in aggregate and easily freezes
The minerals split；The antifreezing agent with diminishing bleed ingredient is added, and the air content of antifreezing agent is less than or equal to 4%；Per side's concrete
The middle hot water for mixing total water content 60% mixes and stirs, and hot water temperature is between 50-60 DEG C so that concrete opening temperature reaches 15
℃；
The transport of concrete：The vehicle tank whole body package mineral wool and plastic skin of concrete transportation trucd mixer are kept the temperature；
Before concreting, the mortar using temperature more than or equal to 10 DEG C soaks concrete conveying pipe, and stirring is big when concreting
In equal to 180s, it is ensured that the workability and mobility of concrete, and ensure that the molding temperature of concrete is more than or equal to 5 DEG C；
The maintenance of concrete：After the completion of concreting, layer of plastic film moisturizing and one layer of pearl are covered in concrete surface
Cotton keeps the temperature；Resistance wire is bound on reinforcing bar simultaneously, and resistance wire inlet wire is heated by low pressure, accelerates the hydration of cement, makes
Concrete obtains the minimum intensity for being not subjected to freeze injury.
2. a kind of concreting in cold-weather method according to claim 1, which is characterized in that the maintenance of the concrete walks
Further include the quality management and control of concrete in rapid：When resistance wire is begun to warm up, the output voltage of heater is 45V, and temperature rise is extremely
At 10 DEG C, the temperature is kept one hour, the output voltage of heater is then adjusted to 55V, controls the heating rate of concrete
Per hour less than or equal to 10 DEG C, the temperature in entire maintenance processes controls between 25 DEG C to 40 DEG C.
3. a kind of concreting in cold-weather method according to claim 2, which is characterized in that begun to warm up in concrete
Afterwards, in thermometric is primary per hour in first 24 hours, heating rate is controlled at 5 DEG C per hour, if per hour more than 5 DEG C, turning down
The voltage gear of heater；After being heated beyond 24 as a child, every 2 hours thermometrics are primary, when the temperature of discovery temperature measuring point is more than 40
DEG C when, in time close heater stop heating, when temperature is reduced to 25 DEG C, continue open heater heating.
4. a kind of concreting in cold-weather method according to claim 2 or 3, which is characterized in that entire concrete is supported
Shield process is 72 hours, or stops heating curing when the observed strength of concrete reaches 70%.
5. a kind of concreting in cold-weather method according to claim 3, which is characterized in that the arrangement side of the temperature measuring point
Method is as follows：Before casting concrete, by thermometric line immobilization with adhesive tape on bar dowel, thermometric contact exposes reinforcing bar 2cm, by drawn
The pre-buried thermometric line of temperature measuring point layout drawing；On its center line beam thermometric line arrangement perpendicular to beam axis, buried depth be deck-molding 1/3 to
1/2；For floor thermometric line by every arrangement of 100 ㎡, and perpendicular to plate face, buried depth is the 1/3 to 1/2 of plate thickness；Every concrete column
A pre-buried thermometric line, is arranged in the middle part of concrete column, and depth is wide 1/2 of column；The buried depth of wall thermometric line is that wall is thick
The 1/2 of degree, wall thermometric line only need a pre-buried thermometric line by every arrangement of 100 ㎡ when the area of wall is less than 50 ㎡.
6. a kind of concreting in cold-weather method according to claim 1, which is characterized in that the arrangement side of the resistance wire
Method is as follows：
The arrangement of stud resistance silk：Four facades of cylinder reinforcing bar are followed successively by ABCD, and one end of resistance wire is most left from the faces cylinder A
The vertical reinforcement bottom of side penetrates, and extends upwardly to column body concrete and pours below top surface, then resistance wire is tied up for 90 degree to right folding
It after bundle, is folded under resistance wire at the stirrup of first of cylinder bottom, then 90 degree of right folding, resistance wire is passed through into ABCD successively by broken line type
Four facades are finally pierced by from D right side of face bottom, and resistance wire and reinforcing bar or stirrup binding are secured in placement process；By resistance wire
It is connected with the main line for connecting electric heater by conducting wire in the end of two facades of AD；When entering cylinder template erection stage, electricity
The end palpus indwelling of silk is hindered in inside concrete；
The arrangement of wall resistance wire：Resistance wire is arranged in the two sides AB of wall steel bar, by resistance wire from the wall adjacent with the faces A
Body bottom penetrates, and extends to walls concrete and pours below top surface, then will be folded to resistance wire under resistance wire to 90 degree of right folding
At the horizontal reinforcement of first of wall steel bar bottom, then 90 ° of right folding, resistance wire is arranged in the A of reinforcing steel bars of wallboards successively by broken line type
Face, resistance wire and reinforcing bar or pull hook banding fixed in placement process；When wall B surface resistance silks are installed, by resistance wire and the faces wall B
Adjacent wall bottom penetrates, and follow-up method for arranging is identical as the faces A；The both ends of the resistance wire on the two sides AB are connect with conducting wire, into
Enter template erection stage, reserve conducting wire outside template in template installation process, template connects conducting wire and main line after installation is complete
It connects, when connection follows ab, ac, and bc circle principles ensure the balance of electricity on every main line, finally connect main line and heater
It connects；
The arrangement of plate resistance wire：Resistance wire is penetrated from plate lower layer reinforcing bar, it is same by folding with reference to the arrangement of wall resistance wire
Resistance wire is arranged on plate lower layer reinforcing bar by line style；The both ends of resistance wire are connect with conducting wire, and conducting wire is connect with main line, and when connection abides by
Ab, ac are followed, bc circle principles ensure the balance of electricity on every main line, finally connect main line with heater；
The arrangement of beam resistance wire：Resistance wire is arranged in beam bottom and beam both sides, and, resistance secured with reinforcing bar or stirrup binding
The both ends of silk are connect with conducting wire, and conducting wire is reserved the length more than plate face reinforcing bar, subsequently into beam side erection stage, template
After installation is complete, conducting wire is connect with main line, when connection follows ab, ac, bc circle principles, ensures the flat of electricity on every main line
Main line, finally connect by weighing apparatus with heater.
7. a kind of concreting in cold-weather method according to claim 6, which is characterized in that the arrangement side of the resistance wire
Method is as follows：The resistance wire is less than or equal to 40 meters using the length of 1.2mm resistance wires and single resistance silk, a heater access
Resistance wire total length be less than or equal to 1000 meters.
8. a kind of concreting in cold-weather method according to claim 6, which is characterized in that the beam resistance wire and plate electricity
It is 200mm to hinder the arrangement spacing between silk, and the arrangement spacing between columnar resistance silk and beam resistance wire is 250mm.
9. a kind of concreting in cold-weather method according to claim 6, which is characterized in that the conducting wire is 4mm2 aluminium cores
Line, the main line are 95mm2 aluminum core lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810438112.3A CN108625597A (en) | 2018-05-09 | 2018-05-09 | A kind of concreting in cold-weather method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810438112.3A CN108625597A (en) | 2018-05-09 | 2018-05-09 | A kind of concreting in cold-weather method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108625597A true CN108625597A (en) | 2018-10-09 |
Family
ID=63692350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810438112.3A Pending CN108625597A (en) | 2018-05-09 | 2018-05-09 | A kind of concreting in cold-weather method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108625597A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110105086A (en) * | 2019-05-14 | 2019-08-09 | 哈尔滨工业大学 | A kind of concrete phase-transition heat-storage conservation layer of cold area's winter construction and its maintenance process |
| CN110143785A (en) * | 2019-05-05 | 2019-08-20 | 江苏建华新型墙材有限公司 | A kind of maintenance process producing light wall material |
| CN110282924A (en) * | 2019-06-24 | 2019-09-27 | 河南国基建设集团有限公司 | A kind of concrete construction method for winter construction |
| CN111075196A (en) * | 2019-12-03 | 2020-04-28 | 中交第三航务工程局有限公司 | Concrete pouring process |
| CN113622693A (en) * | 2021-09-14 | 2021-11-09 | 中国二十二冶集团有限公司 | Cast-in-place concrete column heat preservation freeze-proof device |
| CN114808942A (en) * | 2022-01-27 | 2022-07-29 | 海洋石油工程股份有限公司 | Integrated pile-forming winter construction method for LNG storage tank |
| CN115095172A (en) * | 2022-06-22 | 2022-09-23 | 中交四航工程研究院有限公司 | Concrete structure winter maintenance temperature control system and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296821A (en) * | 2011-07-12 | 2011-12-28 | 中国十七冶集团有限公司 | Construction method for heating curing of reinforced concrete resistance wire under low-temperature condition |
-
2018
- 2018-05-09 CN CN201810438112.3A patent/CN108625597A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296821A (en) * | 2011-07-12 | 2011-12-28 | 中国十七冶集团有限公司 | Construction method for heating curing of reinforced concrete resistance wire under low-temperature condition |
Non-Patent Citations (6)
| Title |
|---|
| 李洪海等: "寒冷地区混凝土内部埋入电阻丝升温养护施工技术", 《建筑技术》 * |
| 杨安亮: "浅谈混凝土的冬期施工及养护", 《城市建设理论研究（电子版）》 * |
| 毛子纯: "基础底板大体积砼温度裂缝控制措施的研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 汪绯等: "冬期混凝土的施工", 《低温建筑技术》 * |
| 百度文库: "混凝土冬季施工工法", 《百度文库-HTTPS://WENKU.BAIDU.COM/VIEW/87D35AD1B0717FD5360CDC9B?FR=UC》 * |
| 谢斌: "电阻丝加热混凝土法在严寒地区施工中的应用", 《民营科技》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110143785A (en) * | 2019-05-05 | 2019-08-20 | 江苏建华新型墙材有限公司 | A kind of maintenance process producing light wall material |
| CN110105086A (en) * | 2019-05-14 | 2019-08-09 | 哈尔滨工业大学 | A kind of concrete phase-transition heat-storage conservation layer of cold area's winter construction and its maintenance process |
| CN110105086B (en) * | 2019-05-14 | 2021-09-07 | 哈尔滨工业大学 | Curing method for realizing cold region winter construction concrete phase change heat storage curing layer |
| CN110282924A (en) * | 2019-06-24 | 2019-09-27 | 河南国基建设集团有限公司 | A kind of concrete construction method for winter construction |
| CN111075196A (en) * | 2019-12-03 | 2020-04-28 | 中交第三航务工程局有限公司 | Concrete pouring process |
| CN113622693A (en) * | 2021-09-14 | 2021-11-09 | 中国二十二冶集团有限公司 | Cast-in-place concrete column heat preservation freeze-proof device |
| CN114808942A (en) * | 2022-01-27 | 2022-07-29 | 海洋石油工程股份有限公司 | Integrated pile-forming winter construction method for LNG storage tank |
| CN115095172A (en) * | 2022-06-22 | 2022-09-23 | 中交四航工程研究院有限公司 | Concrete structure winter maintenance temperature control system and method |
| CN115095172B (en) * | 2022-06-22 | 2023-08-04 | 中交四航工程研究院有限公司 | Winter curing temperature control system and method for concrete structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108625597A (en) | A kind of concreting in cold-weather method | |
| CN109653385A (en) | Connect supporting positioning member and application method, steel wire net rack thermal-insulating board and combined wall | |
| CN201738600U (en) | Assembled integrated type building | |
| US20140088756A1 (en) | Method for electronic temperature controlled curing of concrete and accelerating concrete maturity or equivalent age of precast concrete structures and objects and apparatus for same | |
| CN101818539A (en) | Assembled integral building and construction method thereof | |
| CN105507462B (en) | Have both the combined wall and its construction method of load-bearing and heat insulation function | |
| CN102877486A (en) | Integral cast-in-situ construction method for cable ducts | |
| CN205710462U (en) | Magnetic-type electric blanket is used in a kind of concreting in cold weather heating | |
| CN105672562B (en) | Steam-pressing aero-concrete integral heat insulation wallboard and its production technology | |
| CN110282924A (en) | A kind of concrete construction method for winter construction | |
| CN108999405A (en) | The construction method of severe cold area winter mass concrete | |
| CN108951424A (en) | The formwork support structure and construction method that bridge suspension type pours | |
| CN102677898A (en) | Sequence construction method for large area reinforced concrete floors | |
| CN108843023A (en) | Extreme cold area in low temperature season concrete construction method | |
| CN111927125A (en) | Concrete winter maintenance construction method | |
| CN103835523A (en) | Ultra-long extra-large reinforced concrete structure engineering crack prevention process | |
| CN104230251B (en) | The constructional method of teletostage mass concrete | |
| CN107859039A (en) | A kind of temperature difference control of coal mill foundations mass concrete and detection method | |
| CN107100285B (en) | A kind of prefabricated toilet water seepage prevention construction method | |
| CN208430443U (en) | A kind of formwork support structure that bridge suspension type pours | |
| CN106827207A (en) | A kind of simple concrete column curing means | |
| CN207063610U (en) | A kind of transformer station by prefabricated components splicing builds | |
| CN114474337B (en) | Rapid prefabrication and maintenance method for railway T beam in high-cold high-altitude area | |
| CN108316531A (en) | A kind of laminated floor slab heat insulation prefabricated bottom plate and preparation method thereof | |
| CN207144522U (en) | Large volume ultra-long concrete teletostage jointless construction conserves structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181009 |