CN114750278A - Intelligent steam curing system and method for precast beam - Google Patents
Intelligent steam curing system and method for precast beam Download PDFInfo
- Publication number
- CN114750278A CN114750278A CN202210293328.1A CN202210293328A CN114750278A CN 114750278 A CN114750278 A CN 114750278A CN 202210293328 A CN202210293328 A CN 202210293328A CN 114750278 A CN114750278 A CN 114750278A
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- outer side
- steam
- precast beam
- temperature
- steam curing
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- 238000000034 method Methods 0.000 title claims description 7
- 238000012423 maintenance Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229920000742 Cotton Polymers 0.000 claims abstract description 12
- 238000004321 preservation Methods 0.000 claims abstract description 11
- 238000001723 curing Methods 0.000 claims description 48
- 238000009415 formwork Methods 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 7
- 239000008400 supply water Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 4
- 239000004568 cement Substances 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 230000036571 hydration Effects 0.000 abstract description 3
- 238000006703 hydration reaction Methods 0.000 abstract description 3
- 230000003020 moisturizing effect Effects 0.000 abstract description 3
- 239000007921 spray Substances 0.000 description 6
- 230000000630 rising effect Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/0063—Control arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
- B28B7/42—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for heating or cooling, e.g. steam jackets, by means of treating agents acting directly on the moulding material
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an intelligent steam curing system for precast beams, which comprises a plurality of steam curing pipes, a template system, heat insulation cotton, a steam generator and a water supply tank, wherein the heat insulation cotton is arranged on the side part of the template system, the template system comprises a first outer side mold, a second outer side mold and a top cover assembly, one steam curing pipe is positioned on the top cover assembly, at least two steam curing pipes are positioned in the middle parts of the first outer side mold and the second outer side mold, one end of the steam generator is connected with the water supply tank, and the other end of the steam generator is connected with a plurality of steam curing pipes. Many evaporate and nourish the pipe and template system, keep warm cotton, steam generator, water supply tank cooperation operation, through high temperature and humidity of steam stripping, really do the maintenance purpose of heat preservation moisturizing, higher maintenance temperature promotes cement hydration, accelerates the intensity increase rate of concrete in earlier stage, and the maintenance pipe network is attached to on the template, and it is less to be influenced by the construction, simultaneously the water economy resource.
Description
Technical Field
The invention relates to the field of precast beam maintenance, in particular to an intelligent steam maintenance system for a precast beam and a maintenance method thereof.
Background
At present, traditional precast beam maintenance adopts automatic spray system, and spray system can keep the moist of concrete face, because spray system is damaged easily in the work progress, and the pipeline blocks up easily, sprays and relies on great water pressure, often appears locally leaking and spouts, sprays in addition and leads to concrete surface temperature to reduce, can moisturize but can not keep warm, and it is unfavorable to concrete intensity increase in earlier stage, and intermittent type formula spray system is wet circulation futilely easily, causes the concrete fracture, the water resource of wasting simultaneously.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an intelligent steam curing system for precast beams and a curing method thereof, which can solve the problem of poor curing effect.
One of the purposes of the invention is realized by adopting the following technical scheme:
an intelligent steam curing system for precast beams comprises a plurality of steam curing pipes, a template system, heat preservation cotton, a steam generator and a water supply tank, wherein the heat preservation cotton is arranged on the side part of the template system, the template system comprises a first outer side mold, a second outer side mold and a top cover assembly, a gap of the precast beam is formed between the first outer side mold and the second outer side mold, the first outer side mold and the second outer side mold are symmetrically distributed, and the top cover assembly is positioned at the upper ends of the first outer side mold and the second outer side mold; one of them evaporates foster pipe and is located the top cap subassembly, two at least evaporate foster pipe and be located the middle part of first outside mould, second outside mould, steam generator one end with supply water tank connects, and the other end evaporates foster union coupling with many.
Furthermore, precast beam intelligence steam curing system still includes a plurality of thermal resistance sensor, and a plurality of thermal resistance sensor distributes in the template system.
Further, the thermal resistance sensor is connected with the steam generator, and the generation amount of the steam generator is controlled according to the temperature measured by the thermal resistance sensor.
Further, a plurality of thermal resistance sensor divide into top sensor, lateral part sensor, the top sensor is located the top cap subassembly, the lateral part sensor is located first outside mould, second outside mould.
Furthermore, 3-5 steam-curing pipes are arranged in the middle of each of the first outer side mold and the second outer side mold.
Furthermore, the middle parts of the first outer side mold and the second outer side mold are provided with 3 steam-curing tubes.
Furthermore, a main pipeline is arranged at the output end of the steam generator, and steam distributing valves are arranged at the joints of the main pipeline and the plurality of steam curing pipes.
Further, the main pipeline is a galvanized water pipe with the thickness of 25 mm.
A maintenance method of an intelligent steam maintenance system for precast beams comprises the following steps:
pouring: pouring an I-beam, and covering the top cover assembly on the first outer side die and the second outer side die after the I-beam is poured;
a first-stage curing step: maintaining at 30 ℃ for 6h, raising the temperature to 45 ℃ at the speed of 5 ℃ per hour, and maintaining at 45 ℃ for 1 h;
two-stage maintenance step: raising the temperature to 65 ℃ at the speed of 10 ℃ per hour, and maintaining for 8 hours at the temperature of 65 ℃;
cooling: the temperature was lowered to the natural temperature at a rate of 10 degrees celsius per hour.
Further, in the pouring step, after the top cover assembly is covered on the first outer side die and the second outer side die, whether a hole leakage phenomenon occurs is detected, and if yes, filling is performed.
Compared with the prior art, the invention has the beneficial effects that:
the formwork system comprises a first outer side formwork, a second outer side formwork and a top cover assembly, a gap of a precast beam is formed between the first outer side formwork and the second outer side formwork, the first outer side formwork and the second outer side formwork are symmetrically distributed, and the top cover assembly is positioned at the upper ends of the first outer side formwork and the second outer side formwork; one of them evaporates foster pipe and is located the top cap subassembly, two at least evaporate foster pipe and be located the middle part of first outside mould, second outside mould, steam generator one end with supply water tank connects, and the other end evaporates foster union coupling with many. Many evaporate and nourish the pipe and template system, keep warm cotton, steam generator, water supply tank cooperation operation, through high temperature and humidity of steam stripping, really do the maintenance purpose of heat preservation moisturizing, higher maintenance temperature promotes cement hydration, accelerates the intensity increase rate of concrete in earlier stage, and the maintenance pipe network is attached to on the template, and it is less to be influenced by the construction, simultaneously the water economy resource.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are specifically described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of a preferred embodiment of an intelligent steam curing system for precast beams according to the present invention;
FIG. 2 is another schematic view of the precast beam intelligent steam curing system shown in FIG. 1;
FIG. 3 is a schematic view of a sensor placement area;
fig. 4 is a flow chart of the intelligent steam curing method for the precast beam.
In the figure: 1. steaming the pipe; 2. a template system; 3. heat preservation cotton; 4. a steam generator; 5. a water supply tank.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for purposes of illustration only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-3, an intelligent steam curing system for precast beams comprises a plurality of steam curing pipes 1, a template system 2, heat insulation cotton 3, a steam generator 4 and a water supply tank 5, wherein the heat insulation cotton 3 is arranged on the side part of the template system 2, the template system 2 comprises a first outer side mold, a second outer side mold and a top cover assembly, a gap of the precast beam is formed between the first outer side mold and the second outer side mold, the first outer side mold and the second outer side mold are symmetrically distributed, and the top cover assembly is positioned at the upper ends of the first outer side mold and the second outer side mold; one of them evaporates foster pipe 1 and is located the top cap subassembly, two at least evaporate foster pipe 1 and be located the middle part of first outside mould, second outside mould, steam generator 4 one end with supply water tank 5 is connected, and the other end is connected with many evaporate foster pipe 1. Many evaporate foster pipe 1 and template system 2, heat preservation cotton 3, steam generator 4, water supply tank 5 cooperation operation, through high temperature of steam strip and humidity, really do the maintenance purpose of heat preservation moisturizing, higher maintenance temperature promotes cement hydration, accelerates the intensity growth rate of concrete in earlier stage, and the maintenance pipe network is attached to on the template, and it is less to be influenced by the construction, the water economy resource simultaneously.
Preferably, the precast beam intelligent steam curing system further comprises a plurality of thermal resistance sensors, and the plurality of thermal resistance sensors are distributed in the template system 2. The thermal resistance sensor is connected with the steam generator 4, and the generation amount of the steam generator 4 is controlled according to the temperature measured by the thermal resistance sensor. Referring to fig. 3, A, B, C represents three temperature measurement areas where thermal resistance sensors are required to be placed, and the temperature measured by 3 sensors will be used as the control quantity of the valve switch in the whole steam curing process to control the steam quantity of A, B, C three areas.
Specifically, in the preparation stage of steam curing work, temperature change parameters including rest time, first temperature rise rate and time, second temperature rise rate and constant temperature, constant temperature time, temperature decrease rate and final temperature need to be controlled according to a formulated temperature curve of a curing system. And starting to enter a static curing stage of steam curing after the concrete is poured, wherein the static curing time is used as a control quantity by the control system in the static curing stage. When the beam body reaches the set rest time, the beam body enters a first temperature rising stage, a steam generator opens a valve to deliver steam into the template, and the temperature rising rate and the temperature rising time are used as control quantity in the stage. The thermal resistance sensors (No. I, No. II and No. III) arranged in the A, B, C area of the section measure the temperature of the surface of the concrete beam at the corresponding position once every 1 hour, and the actual temperature rise rate is calculated by comparing with the previous measured value. When the calculated value is higher than the initially set value, the valve of the steam-curing pipeline arranged in the corresponding area needs to be closed, and when the calculated value is lower than the initially set value, the valve of the steam-curing pipeline arranged in the corresponding area needs to be opened again to ensure that the temperature rising rate is within the set value range. After the first temperature rise time is reached, the temperature rise is carried out for the second time, the control principle of the temperature rise rate is the same as that of the first time, but the constant temperature is used for controlling the end of the stage. And after entering the constant temperature stage, the control parameter is the constant temperature. The thermal resistance sensors measure the temperature of the surface of the concrete beam at the corresponding position in real time, compare the measured temperature with an initially set constant temperature value, close the valve of the steam curing pipe in the corresponding area when the measured temperature is higher than a set value, and open the valve in the corresponding area when the measured temperature is lower than the set value, so as to ensure that the steam curing temperature of the concrete beam is kept in a set temperature fluctuation range. The end of the constant temperature stage is judged by the constant temperature time, and the temperature reduction stage is carried out after the set constant temperature time is reached. And in the cooling stage, the cooling rate is required to be controlled, the control principle is the same as the control of the heating rate, and when the cooling rate is higher than a set value, the control system also needs to open the steam curing pipe valve in the corresponding area again. The end of the cooling stage is based on the temperature value higher than 10 ℃ of the room temperature.
Preferably, a plurality of thermal resistance sensor divide into top sensor, side sensor, the top sensor is located the top cap subassembly, the side sensor is located first outside mould, second outside mould. The middle parts of the first outer side die and the second outer side die are respectively provided with 3-5 steam-curing tubes 1. Specifically, the middle parts of the first outer side mold and the second outer side mold are provided with 3 steam-curing tubes 1. The output end of the steam generator 4 is provided with a main pipeline, and steam distributing valves are arranged at the joints of the main pipeline and the plurality of steam curing pipes 1. The main pipeline is a galvanized water pipe with the length of 25 millimeters.
Referring to fig. 4, a maintenance method of an intelligent steam maintenance system for precast beams includes the following steps:
pouring: pouring an I-beam, and covering the top cover assembly on the first outer side die and the second outer side die after the I-beam is poured;
a first-stage curing step: maintaining at 30 ℃ for 6h, raising the temperature to 45 ℃ at the speed of 5 ℃ per hour, and maintaining at 45 ℃ for 1 h;
two-stage maintenance step: raising the temperature to 65 ℃ at the speed of 10 ℃ per hour, and maintaining for 8 hours at the temperature of 65 ℃;
cooling: the temperature was lowered to the natural temperature at a rate of 10 degrees celsius per hour.
Preferably, in the pouring step, after the top cover assembly is covered on the first outer side die and the second outer side die, whether a hole leakage phenomenon occurs is detected, and if yes, filling is performed. The invention realizes the maintenance purpose of heat preservation and moisture preservation of the concrete, ensures that the strength of the concrete reaches the trial-fit strength in 36 hours, accelerates the speed around a beam field, has high beam production efficiency and shortens the beam manufacturing time.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. The utility model provides a precast beam intelligence steam maintenance system, includes that a plurality of roots evaporate foster pipe, template system, heat preservation cotton, steam generator, water supply tank, its characterized in that:
the heat preservation cotton is arranged on the side portion of the formwork system, the formwork system comprises a first outer side formwork, a second outer side formwork and a top cover assembly, a gap of a prefabricated beam is formed between the first outer side formwork and the second outer side formwork, the first outer side formwork and the second outer side formwork are symmetrically distributed, and the top cover assembly is located at the upper ends of the first outer side formwork and the second outer side formwork;
one of them evaporates foster pipe and is located the top cap subassembly, two at least evaporate foster pipe and be located the middle part of first outside mould, second outside mould, steam generator one end with supply water tank connects, and the other end evaporates foster union coupling with many.
2. The precast beam intelligent steam curing system of claim 1, wherein: the precast beam intelligent steam curing system further comprises a plurality of thermal resistance sensors, and the thermal resistance sensors are distributed in the template system.
3. The precast beam intelligent steam curing system of claim 2, wherein: the thermal resistance sensor is connected with the steam generator, and the generation amount of the steam generator is controlled according to the temperature measured by the thermal resistance sensor.
4. The precast beam intelligent steam curing system of claim 2, wherein: a plurality of thermal resistance sensor divide into top sensor, lateral part sensor, the top sensor is located the top cap subassembly, the lateral part sensor is located first outside mould, second outside mould.
5. The precast beam intelligent steam curing system of claim 1, wherein: 3-5 steam-curing pipes are arranged in the middle of each of the first outer side mold and the second outer side mold.
6. An intelligent precast beam steam curing system according to claim 5, wherein: the middle parts of the first outer side mould and the second outer side mould are provided with 3 steam-curing pipes.
7. The precast beam intelligent steam curing system of claim 1, wherein: the output end of the steam generator is provided with a main pipeline, and steam distributing valves are arranged at the joints of the main pipeline and the plurality of steam curing pipes.
8. An intelligent precast beam steam curing system according to claim 7, wherein: the main pipeline is a galvanized water pipe with the thickness of 25 mm.
9. A curing method of the precast beam intelligent steam curing system according to any one of claims 1 to 8, comprising the steps of:
pouring: pouring an I-beam, and covering the top cover assembly on the first outer side die and the second outer side die after the I-beam is poured;
a first-stage curing step: maintaining at 30 ℃ for 6h, raising the temperature to 45 ℃ at the speed of 5 ℃ per hour, and maintaining at 45 ℃ for 1 h;
a first-stage curing step: raising the temperature to 65 ℃ at the speed of 10 ℃ per hour, and maintaining for 8 hours at the temperature of 65 ℃;
cooling: the temperature was lowered to the natural temperature at a rate of 10 degrees celsius per hour.
10. The method of claim 9, wherein: in the pouring step, after the top cover assembly is covered on the first outer side die and the second outer side die, whether a hole leakage phenomenon occurs or not is detected, and if yes, filling is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210293328.1A CN114750278A (en) | 2022-03-23 | 2022-03-23 | Intelligent steam curing system and method for precast beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210293328.1A CN114750278A (en) | 2022-03-23 | 2022-03-23 | Intelligent steam curing system and method for precast beam |
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| CN114750278A true CN114750278A (en) | 2022-07-15 |
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| CN202210293328.1A Pending CN114750278A (en) | 2022-03-23 | 2022-03-23 | Intelligent steam curing system and method for precast beam |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002137220A (en) * | 2000-11-07 | 2002-05-14 | Satoru Shibata | Steam curing tank for concrete product |
| CN1830644A (en) * | 2006-04-17 | 2006-09-13 | 上海隧道工程股份有限公司 | Cast-in-place box girder low-temperature steam maintenance operating method |
| JP2019048742A (en) * | 2017-09-11 | 2019-03-28 | 株式会社ピーエス三菱 | High strength concrete and production method of high strength concrete |
| CN112720815A (en) * | 2020-12-16 | 2021-04-30 | 保利长大工程有限公司 | Steam curing system for bridge concrete precast beam plate |
| CN113084985A (en) * | 2021-04-09 | 2021-07-09 | 中铁六局集团太原铁路建设有限公司 | Full-automatic steam curing equipment and method for concrete prefabricated part |
| CN113681695A (en) * | 2021-08-27 | 2021-11-23 | 中交路桥华南工程有限公司 | Green energy-saving maintenance system and method for prefabricated T-shaped beam |
-
2022
- 2022-03-23 CN CN202210293328.1A patent/CN114750278A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002137220A (en) * | 2000-11-07 | 2002-05-14 | Satoru Shibata | Steam curing tank for concrete product |
| CN1830644A (en) * | 2006-04-17 | 2006-09-13 | 上海隧道工程股份有限公司 | Cast-in-place box girder low-temperature steam maintenance operating method |
| JP2019048742A (en) * | 2017-09-11 | 2019-03-28 | 株式会社ピーエス三菱 | High strength concrete and production method of high strength concrete |
| CN112720815A (en) * | 2020-12-16 | 2021-04-30 | 保利长大工程有限公司 | Steam curing system for bridge concrete precast beam plate |
| CN113084985A (en) * | 2021-04-09 | 2021-07-09 | 中铁六局集团太原铁路建设有限公司 | Full-automatic steam curing equipment and method for concrete prefabricated part |
| CN113681695A (en) * | 2021-08-27 | 2021-11-23 | 中交路桥华南工程有限公司 | Green energy-saving maintenance system and method for prefabricated T-shaped beam |
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