CN103171041A - Auxiliary curing method for cold weather concrete by electric heating tapes - Google Patents
Auxiliary curing method for cold weather concrete by electric heating tapes Download PDFInfo
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- CN103171041A CN103171041A CN2013101203155A CN201310120315A CN103171041A CN 103171041 A CN103171041 A CN 103171041A CN 2013101203155 A CN2013101203155 A CN 2013101203155A CN 201310120315 A CN201310120315 A CN 201310120315A CN 103171041 A CN103171041 A CN 103171041A
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Abstract
The invention relates to an auxiliary curing method for cold weather concrete by electric heating tapes. The auxiliary curing method is characterized by comprising the following steps of: (1) supporting a mould plate firstly, and paving the electric heating tapes in a cast-in-situ member and fixing the electric heating tapes on steel bars by fixing tapes after the steel bars of the cast-in-situ member are installed and an embedded part is placed and welded; and (2) pouring the concrete after the electric heating tapes are detected to be intact, covering a heat-insulating material on the surface of the cast-in-situ member, electrifying the electric heating tapes after the covering of the heat-insulating material, and heating the concrete to keep the temperature of the concrete at 5-8 DEG C. According to the auxiliary curing method disclosed by the invention, because the self-temperature-control electric heating tapes are uniformly arranged in the concrete member, the concrete can be directly and uniformly heated with high efficiency; the heating mode is from inside to outside, so that the surface heat loss of the member is less, and energy is saved; the auxiliary curing method can be used in any construction site without the influences of the heights and the sizes of buildings; and the construction is simple and safe, and is less prone to electric shock accidents.
Description
Technical field
The invention belongs to technical field of building construction, relate to the auxiliary method of curing of a kind of cold weather concrete heat tape.
Background technology
Concrete is in condensation process as be subject to the subzero temperature invasion and attack, and the hydration of cement is hindered, and wherein free moisture begins to freeze, and volume increases 9%, and the danger that makes the concrete bursting by freezing and have a strong impact on concrete quality is arranged; The concrete initial stage is placed in maintenance under normal temperature after enduring cold again, though its intensity still can increase, can not return to the level that does not suffer freeze injury; And frozen more early, the recovery of later strength is just more difficult.Therefore, adopt appropriate maintenance process, preventing endures cold in early days is the key that guarantees the concreting in cold weather quality.In order to prevent from suffering early stage freeze injury, concrete temperature when usually requiring the beginning maintenance is not less than 5 ° of C, but present constantly promoting the use of along with skyscraper and mass concrete component, existing passive outside maintenance process is subjected to the job site building storey high, the impact of the factors such as member is large, more and more inconvenience is used at the scene.
Summary of the invention
The present invention provides a kind of cold weather concrete heat tape to assist maintenance process for overcoming above-mentioned deficiency, is used in conjunction with regenerative process, and the concrete during construction and maintenance is carried out heating curing.It is better on-the-spot that the present invention is applicable to the supply of electric power condition, and the surface coefficient of structure is more than 5, require to obtain early strong member, the inventive method comprises by laying in concrete component from limitting warm heat tape, when build complete after, the surface applies covering insulation material, after covering is completed, and the energising heating curing.Be applicable to the concrete of new building dry with sclerosis in use.
For achieving the above object, the technical solution adopted for the present invention to solve the technical problems is:
A kind of cold weather concrete heat tape is assisted maintenance process, it is characterized in that carrying out according to the following steps: (1) is support shuttering at first, after the reinforcement installation, built-in fitting of completing cast-in-situ concrete member placed welding job, lay heat tape and be fixed on reinforcing bar with fixed band in cast-in-situ concrete member; (2) detect heat tape intact after, casting concrete, at cast-in-situ concrete member surface coverage insulation material, cover complete after, to the heat tape energising, heating makes temperature maintain 5-8 ℃ to concrete.
According to cast-in-situ concrete member size, size and version, arrange evenly, continuously heat tape in cast-in-situ concrete member; Heat tape is placed in concrete, does not allow to contact template; Do not allow to expose from concrete.
Described heat tape is for certainly limitting warm heat tape.
The most important of the present invention is exactly by to concrete active maintenance, reduces to greatest extent the low duration restriction that causes of Yin Wendu, prevents that concrete from freezing, and accelerates its sclerosis.
The present invention's advantage compared with prior art is:
The present invention therefore can be directly to the concrete heating owing to certainly limitting warm heat tape to be evenly arranged in concrete component inside, homogeneous heating, and the efficiency of heating surface is high; Mode of heating from inside to outside, the component surface heat loss is few, energy savings; Can use in any job site, do not built the impact of height size; Construct simple and safe, be difficult for causing electric shock accidents.
Simultaneously from limitting the temperature of warm heat tape can the volitional check heating time, can need not to increase with the automatic regulation output power of the temperature that is heated system other equipment.And arbitrarily brachymemma and in the certain-length scope arbitrarily spreading use and do not affect that above-mentioned limit temperature heats and the performance of power adjusting.Temperature can be not too high also can be not too low because temperature is automatically to regulate.The power of self-temperature-limiting heating strip mainly is controlled by diabatic process, and with the automatic regulation output power of the temperature that is heated system, when temperature rose, resistance increased, and power reduces; When temperature descended, resistance reduced, and the increase of output power goes round and begins again like this, finally reach the equalization point of temperature, and traditional permanent power heater is without this function.Therefore, the inventive method energy savings does not need additionally to lay attemperating unit after laying is completed, substantially reach material self-control temperature.
Description of drawings
Fig. 1 establishes the heating tape schematic diagram in cast-in-place concrete of the present invention.
Fig. 2 establishes heating tape member sectional schematic diagram in cast-in-place concrete of the present invention.
In figure: the 1-cast-in-situ concrete member, the 2-reinforcing bar, 3-is from limitting warm heat tape, 4-insulation material.
The specific embodiment
The present invention is described in detail below in conjunction with accompanying drawing:
As shown in Figure 1 and Figure 2, a kind of cold weather concrete heat tape is assisted maintenance process, it is characterized in that carrying out according to the following steps: (1) is support shuttering at first, after the reinforcing bar 2 of completing cast-in-situ concrete member 1 is installed, built-in fitting places welding job, in the interior laying of cast-in-situ concrete member 1 from limitting warm heat tape 3 and being fixed on reinforcing bar 2 with fixed band; According to cast-in-situ concrete member size, size and version, arrange evenly, continuously from limitting warm heat tape in cast-in-situ concrete member; Be placed in concrete from the warm heat tape of limit, do not allow to contact template; Do not allow to expose from concrete; (2) detect after limitting warm heat tape 3 intact, casting concrete at cast-in-situ concrete member 1 surface coverage insulation material 4, after covering is completed, is given from limitting warm heat tape 3 energisings, and heating makes temperature maintain 5-8 ℃ to concrete.
It is above that auxiliary maintenance process is described in detail to cold weather concrete heat tape provided by the present invention; used concrete case herein principle of the present invention and embodiment have been done elaboration; these are implemented an explanation of example and just are used for helping to understand method of the present invention and core concept; simultaneously for one of ordinary skill in the art; according to thought of the present invention; all will change in specific embodiments and applications; no matter but do what kind of variation; every have a technology case identical or close with the present invention, all within its protection domain.
Claims (3)
1. auxiliary maintenance process of cold weather concrete heat tape, it is characterized in that carrying out according to the following steps: (1) is support shuttering at first, after the reinforcement installation, built-in fitting of completing site concrete placed welding job, lay heat tape and be fixed on reinforcing bar with fixed band in site concrete; (2) detect heat tape intact after, casting concrete, at site concrete surface coverage insulation material, cover complete after, to the heat tape energising, heating makes temperature maintain 5-8 ℃ to concrete.
2. the auxiliary maintenance process of cold weather concrete heat tape according to claim 1 is characterized in that: according to site concrete size, size and version, arrange evenly, continuously heat tape in site concrete; Heat tape is placed in concrete.
3. the auxiliary maintenance process of cold weather concrete heat tape according to claim 1 is characterized in that: described heat tape is for certainly limitting warm heat tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101203155A CN103171041A (en) | 2013-04-09 | 2013-04-09 | Auxiliary curing method for cold weather concrete by electric heating tapes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101203155A CN103171041A (en) | 2013-04-09 | 2013-04-09 | Auxiliary curing method for cold weather concrete by electric heating tapes |
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| CN103171041A true CN103171041A (en) | 2013-06-26 |
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| CN2013101203155A Pending CN103171041A (en) | 2013-04-09 | 2013-04-09 | Auxiliary curing method for cold weather concrete by electric heating tapes |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675118A (en) * | 2015-02-11 | 2015-06-03 | 刘明瑞 | Electric heating technology for winter concrete construction |
| CN104805935A (en) * | 2015-04-08 | 2015-07-29 | 中国建筑第八工程局有限公司 | Temperature monitoring based crack control method for wall body |
| CN106592430A (en) * | 2016-11-14 | 2017-04-26 | 中建三局基础设施工程有限公司 | Cast-in-place winter construction method for hanging basket cantilever |
| CN108818906A (en) * | 2018-07-03 | 2018-11-16 | 张洪涛 | A kind of curing means for winter highway engineering construction concrete |
| CN110590398A (en) * | 2019-08-28 | 2019-12-20 | 中铁大桥局集团第一工程有限公司 | Heating maintenance method for thin-wall concrete of steel-concrete composite beam |
| CN112497453A (en) * | 2019-09-16 | 2021-03-16 | 中国京冶工程技术有限公司 | Non-corrosive liquid heat-conducting medium for cement electric heating composite template and heat preservation control device |
| CN112706266A (en) * | 2020-12-30 | 2021-04-27 | 哈尔滨工业大学 | Reinforced concrete self-maintenance device for winter construction in cold region and maintenance method thereof |
| CN112854748A (en) * | 2021-03-10 | 2021-05-28 | 中铁二十局集团第六工程有限公司 | Maintenance method for construction of suspension casting box girder in winter |
| CN112982173A (en) * | 2021-02-25 | 2021-06-18 | 中建八局第四建设有限公司 | Winter construction and health maintenance method for bridge expansion joint |
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| JP2002332746A (en) * | 2001-05-09 | 2002-11-22 | Kurosawa Construction Co Ltd | Grout antifreezing construction method |
| JP2004324259A (en) * | 2003-04-25 | 2004-11-18 | Takanori Sato | Recycling structure, and reinforcement, steel wire rope and anchor plate used for the structure |
| CN102373803A (en) * | 2011-11-15 | 2012-03-14 | 天津大学 | Novel precast concrete pipe die and construction method thereof |
| CN102935658A (en) * | 2012-11-08 | 2013-02-20 | 沈阳建筑大学 | Method and device for concrete electrical heating maintenance |
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2013
- 2013-04-09 CN CN2013101203155A patent/CN103171041A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002332746A (en) * | 2001-05-09 | 2002-11-22 | Kurosawa Construction Co Ltd | Grout antifreezing construction method |
| JP2004324259A (en) * | 2003-04-25 | 2004-11-18 | Takanori Sato | Recycling structure, and reinforcement, steel wire rope and anchor plate used for the structure |
| CN102373803A (en) * | 2011-11-15 | 2012-03-14 | 天津大学 | Novel precast concrete pipe die and construction method thereof |
| CN102935658A (en) * | 2012-11-08 | 2013-02-20 | 沈阳建筑大学 | Method and device for concrete electrical heating maintenance |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675118A (en) * | 2015-02-11 | 2015-06-03 | 刘明瑞 | Electric heating technology for winter concrete construction |
| CN104675118B (en) * | 2015-02-11 | 2017-09-05 | 刘明瑞 | A kind of concreting in cold weather electrical heating process |
| CN104805935A (en) * | 2015-04-08 | 2015-07-29 | 中国建筑第八工程局有限公司 | Temperature monitoring based crack control method for wall body |
| CN106592430A (en) * | 2016-11-14 | 2017-04-26 | 中建三局基础设施工程有限公司 | Cast-in-place winter construction method for hanging basket cantilever |
| CN108818906A (en) * | 2018-07-03 | 2018-11-16 | 张洪涛 | A kind of curing means for winter highway engineering construction concrete |
| CN110590398A (en) * | 2019-08-28 | 2019-12-20 | 中铁大桥局集团第一工程有限公司 | Heating maintenance method for thin-wall concrete of steel-concrete composite beam |
| CN112497453A (en) * | 2019-09-16 | 2021-03-16 | 中国京冶工程技术有限公司 | Non-corrosive liquid heat-conducting medium for cement electric heating composite template and heat preservation control device |
| CN112706266A (en) * | 2020-12-30 | 2021-04-27 | 哈尔滨工业大学 | Reinforced concrete self-maintenance device for winter construction in cold region and maintenance method thereof |
| CN112982173A (en) * | 2021-02-25 | 2021-06-18 | 中建八局第四建设有限公司 | Winter construction and health maintenance method for bridge expansion joint |
| CN112854748A (en) * | 2021-03-10 | 2021-05-28 | 中铁二十局集团第六工程有限公司 | Maintenance method for construction of suspension casting box girder in winter |
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Application publication date: 20130626 |