CN115949254A - Automatic temperature control system for mass concrete - Google Patents
Automatic temperature control system for mass concrete Download PDFInfo
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- CN115949254A CN115949254A CN202211516665.9A CN202211516665A CN115949254A CN 115949254 A CN115949254 A CN 115949254A CN 202211516665 A CN202211516665 A CN 202211516665A CN 115949254 A CN115949254 A CN 115949254A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention provides a large-volume concrete automatic temperature control system, which comprises: a temperature monitoring system and a cooling system; the temperature monitoring system comprises a plurality of temperature measuring devices, an automatic data acquisition system and a data transmission system; measuring the temperature of the concrete poured by the temperature measuring device; the data acquisition system comprises a data collection and transmission device, and is used for collecting temperature measurement data and transmitting the temperature measurement data to the intelligent construction site platform in real time; the cooling system comprises an intelligent construction site platform, a signal receiving device, an automatic control device and a water circulation system; the intelligent construction site platform collects temperature data sent by the data acquisition system in real time and processes the temperature data; the signal receiving device receives a signal sent by the intelligent construction site platform; the automatic control device automatically controls the water circulation system according to the received signals. The automatic temperature control system realizes the linkage of the temperature monitoring system and the cooling system for the temperature control and the maintenance of mass concrete, adjusts and optimizes temperature control measures in time during temperature monitoring, and avoids the generation of temperature difference cracks.
Description
Technical Field
The invention relates to the technical field of concrete temperature control and maintenance, in particular to a large-volume automatic concrete temperature control system.
Background
With the vigorous development of urban construction and the increasing maturity of concrete technology, mass concrete begins to be widely applied in building engineering, and high-rise and super high-rise buildings and special buildings adopting mass concrete structures increasingly appear.
The mass concrete is concrete with large geometric dimension, and when the concrete is cast in situ, the concrete mixture is continuously hydrated along with cement, and the internal temperature is gradually increased. Because concrete mixture is a non-uniform mixture composed of a plurality of materials, the internal temperature distribution of concrete is also very non-uniform due to different specific heat capacities of different materials. In the case of concrete structures, there is a temperature difference between the interior and the exterior. The difference between the internal temperature and the external temperature of the concrete and the external temperature of the surface of the concrete and the external environment, namely the difference between the internal temperature and the external temperature, namely delta T and delta T, is caused, on one hand, the concrete generates strain, and on the other hand, the strain of the concrete is prevented, limited and restrained by the external restraint and the restraint of each mass point inside the concrete structure, so that the concrete generates stress, and the volume of the cement can be changed or heat is generated to easily cause the generation of cracks.
Therefore, the temperature control and the maintenance of the mass concrete are all the time through the whole construction process, meanwhile, the temperature control and the temperature detection are mutually connected, and the temperature needs to be detected and fed back in time in the construction process. The curing aims at reducing the temperature difference between the inside and the outside of the concrete, and two main ways are as follows: firstly, the heat exchange between the concrete and the outside is reduced, namely the poured concrete is sealed to reduce the temperature difference between the inside and the outside, and the concrete is hardened under the condition of small temperature difference; secondly, the internal temperature of the concrete is reduced.
However, the problems of untimely detection temperature feedback, insufficient curing and the like exist in the temperature control and curing of the mass concrete at present, so that the phenomena of temperature reduction shrinkage, drying shrinkage and the like of the concrete occur, and temperature difference cracks are generated.
Disclosure of Invention
In view of this, the invention aims to provide an automatic temperature control system for temperature control and maintenance of mass concrete, which uses an intelligent construction site platform to realize linkage of a temperature monitoring system and a cooling system, timely adjusts and optimizes temperature control measures in the temperature monitoring process, and avoids generation of temperature difference cracks.
The invention provides a large-volume concrete automatic temperature control system, which comprises: temperature monitoring system, cooling system.
The temperature monitoring system includes: the system comprises a plurality of temperature measuring devices, an automatic data acquisition system and a data transmission system; the temperature measuring device measures the temperature of concrete after the concrete is poured.
Preferably, the data transmission system comprises transmission by wire.
The data acquisition system includes: and the data collecting and sending device is used for collecting the temperature measurement data and sending the temperature measurement data to the intelligent construction site platform in real time.
The cooling system includes: wisdom building site platform, signal receiver, automatic control device, water circulating system.
Specifically, the automatic control device includes: a temperature control switch; the water circulation system includes: water tank, water pump, temperature heating device.
The intelligent construction site platform is used for collecting temperature data sent by the data acquisition system in real time, and processing the temperature data according to standard requirements, wherein when the data meet the difference between the water inlet temperature and the highest concrete temperature, the difference is 15-25 ℃; the difference between the water outlet temperature and the water inlet temperature is 3-6 ℃, the temperature reduction rate is not more than 2 ℃/d and not more than 1 ℃/4 h), a signal is sent to stop the water circulation system, and if the difference is not met, the water circulation system is started; the signal receiving device is used for receiving signals sent by the intelligent construction site platform; and the automatic control device is used for automatically controlling the water circulation system according to the received signal information of the intelligent construction site platform.
Further, the parameters monitored by the temperature monitoring system include: concrete mixture temperature, internal temperature, ambient temperature, cooling water temperature, concrete surface temperature difference and cooling rate.
Further, the temperature measuring device is arranged in concrete and a water circulation system which need temperature measurement.
Further, the arrangement method of the temperature measuring device comprises the following steps:
according to the construction progress, 1~2 positioning positions are arranged on each layer of concrete pouring operation surface; when the thickness of the concrete pouring wall is uniform, the positioning space is between 10m and 15m; on the vertical face of the wall, the horizontal positioning distance is 5-10m, and the vertical positioning distance is 3-5m.
Specifically, the variable cross-section part of the concrete pouring wall can increase the number of positioning positions; the measuring points are arranged at the edge, the corner, the middle part, the sump, the elevator shaft and the like of the concrete.
Further, the temperature measuring device includes: the temperature measuring range of the temperature sensor is-30-125 ℃.
Further, the data transmission system includes: the intelligent construction site comprises a temperature signal transmission lead, a temperature data signal transmission line and a temperature control signal transmission line, wherein the temperature signal transmission lead is used for transmitting temperature data sent by the data acquisition system in real time to an intelligent construction site platform, and the temperature data signal transmission line is used for transmitting the temperature data collected and processed by the intelligent construction site platform to an automatic control device; and the temperature control signal transmission line is used for transmitting the control signal of the automatic control device to the water circulation system.
Further, the arrangement mode of the temperature measuring device in concrete and a water circulation system is as follows: are arranged on the surface, the middle part and the lower part of the concrete, as well as a cooling water inlet, a cooling water outlet and the interior of the water tank.
Further, the measuring point arranging method of the temperature measuring device arranged on the surface and the lower part of the concrete comprises the following steps:
the concrete surface temperature measuring points are arranged at the positions 50mm away from the concrete surface, and the concrete bottom temperature measuring points are arranged at the positions 50-100mm above the bottom surface of the concrete casting.
Furthermore, when the temperature sensor is buried in concrete, the sensor part and the transmission lead part of the temperature sensor respectively adopt sealing protection measures so as to prevent the sensor and the transmission lead from being damaged in the construction process.
For example, when the temperature sensor is placed in a metal protection pipe with the diameter of 20mm-30mm, the bottom end of the metal pipe is sealed in advance, the surface of concrete is exposed for 300mm, the metal pipe is fixed, and after the temperature sensor is placed, the upper end opening of the metal pipe is subjected to sealing protection treatment.
Further, the temperature difference between the surface and the inside of the concrete monitored by the temperature monitoring system exceeds 20 ℃ when the thickness of the concrete is less than 1.5m, exceeds 25 ℃ when the thickness of the concrete is 1.5-2.5 m or exceeds 28 ℃ when the thickness of the concrete is more than 2.5m, and/or the cooling rate is more than 2.0 ℃/d or the cooling rate is more than 1.0 ℃ every 4h, automatically alarming, and adjusting and optimizing temperature control measures.
Compared with the prior art, the invention has the beneficial effects that:
the intelligent building site platform based automatic temperature control system is designed for temperature control and maintenance of mass concrete, linkage of the temperature monitoring system and the cooling system is realized, temperature control measures can be adjusted and optimized in time in the temperature monitoring process, and temperature difference cracks are avoided.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
In the drawings:
fig. 1 is a schematic view of a system configuration of a large-volume concrete automatic temperature control system according to an embodiment of the present invention.
In the drawings, the reference numbers indicate:
1. the system comprises a data collecting and sending device, 2, a smart construction site platform, 3, a temperature data signal transmission line, 4, a temperature control switch, 5, a temperature control signal transmission line, 6, a water tank, 7, a water pipe, 8, a first temperature measuring device (for measuring the surface temperature of concrete), 9, a second temperature measuring device (for measuring the internal temperature of the concrete), 10, a third temperature measuring device (for measuring the lower temperature of the concrete), 11 and a fourth temperature measuring device (for measuring the temperature of a water inlet); 12. a fifth temperature measuring device (for measuring the temperature of a water gap), 13, a sixth temperature measuring device (for measuring the temperature of a water tank), 14, a mass concrete body, 15, a water pump, 16, a water temperature heating device, 17 and a temperature signal transmission lead.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and products consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if," as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination," depending on the context.
The embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
The embodiment of the invention provides an automatic temperature control system for mass concrete, which is shown in a figure 1 and comprises: temperature monitoring system, cooling system.
The temperature monitoring system includes: the system comprises a plurality of temperature measuring devices, an automatic data acquisition system and a data transmission system; the temperature measuring device comprises a first temperature measuring device 8, a second temperature measuring device 9, a third temperature measuring device 10, a fourth temperature measuring device 11, a fifth temperature measuring device 12 and a sixth temperature measuring device 13; the temperature measuring device measures the temperature of the concrete after the concrete is poured.
Preferably, the data transmission system adopts wire transmission.
The data acquisition system includes: data collection and transmission device 1, data collection and transmission device 1 is used for collecting the temperature measurement data and sends wisdom building site platform 2 in real time.
The cooling system includes: wisdom building site platform 2, signal receiver, automatic control device, water circulating system.
In this embodiment, the automatic control device includes: a temperature control switch 4; the water circulation system includes: a water tank 6, a water pipe 7, a water pump 15 and a water temperature heating device 16.
The intelligent construction site platform 2 is used for collecting temperature data sent by the data acquisition system in real time through a temperature signal transmission lead 17, processing the temperature data according to the standard requirement, and when the data meet the requirement that the difference between the water inlet temperature and the highest temperature of concrete is 15-25 ℃; the difference between the water outlet temperature and the water inlet temperature is 3-6 ℃, the cooling rate is not more than 2 ℃/d and not more than 1 ℃/4 h), a signal is sent to the temperature control switch 4 to stop the water circulation system, and if the difference is not satisfied, the water circulation system is started; the signal receiving device is used for receiving signals sent by the intelligent construction site platform 2; and the automatic control device is used for automatically controlling the water circulation system according to the received signal information of the intelligent construction site platform 2.
The temperature measuring device is arranged in the concrete and water circulation system which needs to measure temperature.
The arrangement method of the first temperature measuring device 8, the second temperature measuring device 9 and the third temperature measuring device 10 comprises the following steps:
according to the construction progress, 1~2 positioning positions are arranged on each layer of concrete pouring operation surface; when the thickness of the concrete pouring wall is uniform, the positioning space is between 10m and 15m; on the vertical face of the wall, the horizontal positioning distance is 5-10m, and the vertical positioning distance is 3-5m.
Specifically, the arrangement of the positioning points can comprehensively and accurately reflect the temperature change condition of the large-volume concrete, and the positioning quantity can be increased at the variable cross-section part of the concrete pouring wall body; the measuring points are arranged at the edge, the corner, the middle part, the sump, the elevator shaft and the like of the concrete.
The measuring point arrangement method for arranging the first temperature measuring device 8 and the third temperature measuring device 10 on the surface and the lower part of the concrete comprises the following steps:
the concrete surface temperature measuring points are arranged at the positions 50mm away from the concrete surface, and the concrete bottom temperature measuring points are arranged at the positions 50-100mm above the bottom surface of the concrete casting.
According to the thickness of the concrete, 3~5 measuring points are arranged at the surface layer, the center and the bottom layer of the concrete and at the middle upper part and the middle lower part of the concrete respectively.
When water cooling is carried out, the position measuring points are arranged at the middle positions of two adjacent cooling pipes, and temperature measuring points are respectively arranged at the inlet and the outlet of the cooling water pipe.
The temperature measuring device comprises: the temperature measuring range of the temperature sensor is-30-125 ℃.
The data transmission system includes: the intelligent construction site comprises a temperature signal transmission lead 17, a temperature data signal transmission line 3 and a temperature control signal transmission line 5, wherein the temperature signal transmission lead 17 is used for transmitting temperature data sent by the data acquisition system in real time to the intelligent construction site platform 2, and the temperature data signal transmission line 3 is used for transmitting the temperature data collected and processed by the intelligent construction site platform 2 to an automatic control device; the temperature control signal transmission line 5 is used for transmitting the control signal of the automatic control device to the water circulation system.
The arrangement mode of the temperature measuring device in the concrete and the water circulation system is as follows: the first temperature measuring device 8 is arranged on the surface of concrete, the second temperature measuring device 9 is arranged in the middle of the concrete, the third temperature measuring device 10 is arranged on the lower portion of the concrete, the fourth temperature measuring device 11 is arranged at the water inlet of cooling water, the fifth temperature measuring device 12 is arranged at the water outlet, the sixth temperature measuring device 13 is arranged in the water tank to measure the water temperature of the water tank, and when the water inlet temperature is too low, the water tank 6 can be heated by the water temperature heating device 16 in the water tank 6.
The parameters monitored by the temperature monitoring system include: concrete mixture temperature, internal temperature, ambient temperature, cooling water temperature, concrete surface temperature difference and cooling rate.
In this embodiment, the measurement and recording frequency of the concrete mold-entering temperature, the surface-interior temperature difference, the cooling rate and the ambient temperature is as follows:
1. the frequency of measuring the concrete mold-entering temperature is not less than 2 times per shift.
2. After concrete pouring, recording the temperature for 1 time at intervals of 15min to 60min.
3. In the temperature monitoring process, when the temperature reduction rate and the surface-interior temperature difference exceed the following specified values, automatic alarm is required, and temperature control measures are adjusted and optimized in time.
Preferably, when the temperature sensor is buried in concrete, the sensor part and the transmission lead part of the temperature sensor respectively adopt sealing protection measures to prevent the sensor and the transmission lead from being damaged in the construction process.
In the embodiment, the temperature sensor and the transmission lead are soaked together at a position 1m underwater for 24 hours before being installed for testing without damage.
The method comprises the steps of putting a temperature sensor into a metal protection pipe with the diameter ranging from 20mm to 30mm, plugging the bottom end of the metal pipe in advance to expose 300mm of the surface of concrete, fixing the metal pipe, and sealing and protecting an upper port of the metal pipe after the temperature sensor is placed.
Referring to table 1, the temperature difference between the surface and the inside of the concrete monitored by the temperature monitoring system exceeds 20 ℃ when the thickness of the concrete is less than 1.5m, exceeds 25 ℃ when the thickness of the concrete is 1.5 to 2.5m or exceeds 28 ℃ when the thickness of the concrete is more than 2.5m, and/or the cooling rate is more than 2.0 ℃/d or the cooling rate is more than 1.0 ℃ every 4 hours, automatically alarming, and adjusting and optimizing temperature control measures;
TABLE 1
| Concrete thickness (m) | ＜1.5 | 1.5~2.5 | ＞2.5 |
| Difference between outside and inside (. Degree. C.) | 20 | 25 | 28 |
In this embodiment, the temperature monitoring system has the display, storage and processing engineering of temperature and time parameters, and can draw the temperature curve of the measuring point in real time.
The temperature measuring device (temperature monitoring instrument) can adopt wired or wireless signal transmission, and wired transmission is adopted in the embodiment; the transmission line has a short-circuit prevention function.
When wireless transmission is adopted, control instruction parameters can be input through a mobile phone end of the intelligent construction site platform 2; the transmission distance of the wireless communication terminal is considered to meet the requirements of field test, and the frequency and power of wireless transmission do not influence the normal use of other facilities such as communication, navigation and the like.
The temperature measuring device (temperature monitoring instrument) adopted in the embodiment is in accordance with regular calibration, and the allowable error is not more than 0.5 ℃.
The automatic data acquisition system complies with the following regulations:
1. the stability and the anti-interference capability meet the monitoring requirements of a construction site.
2. And the requirements of continuous data acquisition and storage for more than 20 days are met.
3. The whole process from signal acquisition to result output is automatically realized, and the alarm function is provided when the cooling rate is too high and the temperature difference between the inside and the outside is too large.
4. The temperature and temperature time curves of different monitoring points can be displayed in the monitoring process, the monitoring data can be displayed in a table form, and the temperature time curves of all time periods can be transmitted.
In this embodiment, the temperature control and heat preservation and moisture preservation of the large-volume concrete body 14 includes:
1. when one of the following conditions occurs, the temperature of the mass concrete is controlled by adopting a water cooling mode:
1. the central temperature of the concrete sample is calculated or actually measured to be more than 80 ℃.
2. The thickness of the concrete is more than 2500mm, the strength grade is more than C50, and the mold-entering temperature of the concrete is more than 30 ℃.
3. When other needs to control the core temperature of the concrete.
When the pre-buried cooling water pipe is used for cooling, parameter design of a water cooling system is needed.
2. And (3) heat preservation, moisture preservation and maintenance:
1. and after finishing the concrete plastering operation, performing heat preservation and maintenance in time.
2. And carrying out heat preservation maintenance according to the real-time monitoring result of the temperature change in the concrete.
3. When the temperature of the construction operation environment is lower than 5 ℃, the heat preservation and moisture preservation maintenance of the concrete are carried out; when the environmental temperature is higher than 5 ℃, the heat preservation and maintenance can be postponed according to the internal temperature condition of the concrete.
4. The moisturizing and curing time of the mass concrete should not be less than 14 days.
3. Temperature control of the water circulation system:
1. the water flow speed (m/s) of the cooling water pipe is 0.8 to 1.0 m/s.
2. When a multi-loop circulating cooling system is arranged, a cooling water pressure stabilizing device is arranged at the water inlet.
3. The distance between the cooling water pipe and the edge of the concrete is 1.5 to 2m.
4. And after the concrete is initially set, starting a water circulation system in time for cooling.
5. Controlling the difference between the water inlet temperature and the highest concrete temperature by adjusting the water inlet flow and the water temperature, wherein the temperature difference is 15-25 ℃; the difference between the water outlet temperature and the water inlet temperature is 3-6 ℃, the cooling rate is not more than 2 ℃/d and not more than 1 ℃/4h, and in the water cooling process, the heat preservation and moisture preservation maintenance of the reinforced concrete is enhanced.
6. When the difference between the maximum temperature and the surface temperature of the concrete is not more than 15 ℃, the water cooling operation can be suspended; and when the difference between the maximum temperature of the concrete and the surface temperature is more than 25 ℃, restarting the water cooling system.
And after the water cooling is finished, plugging and filling with cement paste, wherein the water cement ratio of the grouting material is not more than 0.6, and removing all external pipelines and facilities of the water circulation system after the cement paste is solidified.
The embodiment of the invention designs the automatic temperature control system based on the intelligent construction site platform for controlling and maintaining the temperature of mass concrete, realizes linkage of the temperature monitoring system and the cooling system, can adjust and optimize temperature control measures in time in the temperature monitoring process, and avoids generation of temperature difference cracks.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A bulky concrete automatic temperature control system which is characterized by comprising: a temperature monitoring system and a cooling system;
the temperature monitoring system includes: the system comprises a plurality of temperature measuring devices, an automatic data acquisition system and a data transmission system; the temperature measuring device measures the temperature of the concrete after the concrete is poured;
the data acquisition system includes: the data collecting and sending device is used for collecting temperature measurement data and sending the temperature measurement data to the intelligent construction site platform in real time;
the cooling system includes: the intelligent construction site comprises an intelligent construction site platform, a signal receiving device, an automatic control device and a water circulation system;
the intelligent construction site platform is used for collecting temperature data sent by the data acquisition system in real time and processing the temperature data, and when the temperature data meets the requirement that the difference between the water inlet temperature and the highest concrete temperature is 15-25 ℃; the difference between the water outlet temperature and the water inlet temperature is 3-6 ℃, the cooling rate is not more than 2 ℃/d and is not more than 1 ℃/4h, a signal is sent to stop the water circulation system, and if the difference is not met, the water circulation system is started; the signal receiving device is used for receiving signals sent by the intelligent construction site platform; and the automatic control device is used for automatically controlling the water circulation system according to the received signal information of the intelligent construction site platform.
2. The automatic temperature control system for mass concrete according to claim 1, wherein the parameters monitored by the temperature monitoring system include: concrete mixture temperature, internal temperature, ambient temperature, cooling water temperature, concrete surface temperature difference and cooling rate.
3. The automatic temperature control system for mass concrete according to claim 1, wherein the temperature measuring device is arranged in the concrete and water circulation system which needs to measure temperature.
4. The automatic temperature control system for mass concrete according to claim 1, wherein the arrangement method of the temperature measuring device comprises:
1~2 positioning positions are arranged on each layer of concrete pouring operation surface; when the thickness of the concrete pouring wall is uniform, the positioning space is 10m to 15m; on the vertical face of the wall body, the position measurement horizontal spacing is 5 to 10m, and the vertical spacing is 3 to 5m.
5. The automatic temperature control system for mass concrete according to claim 1, wherein the temperature measuring device comprises: the temperature measurement range of the temperature sensor is-30-125 ℃.
6. The automatic temperature control system for mass concrete according to claim 3, wherein the data transmission system comprises: the intelligent building site temperature control system comprises a temperature signal transmission wire, a temperature data signal transmission line and a temperature control signal transmission line, wherein the temperature signal transmission wire is used for transmitting temperature data sent by the data acquisition system in real time to the intelligent building site platform, and the temperature data signal transmission line is used for transmitting the temperature data collected and processed by the intelligent building site platform to an automatic control device; and the temperature control signal transmission line is used for transmitting the control signal of the automatic control device to the water circulation system.
7. The automatic temperature control system for mass concrete according to claim 3, wherein the arrangement of the temperature measuring device in the concrete and the water circulation system is as follows: are arranged on the surface, the middle part and the lower part of the concrete, as well as the cooling water inlet, the cooling water outlet and the inside of the water tank.
8. The automatic temperature control system for mass concrete according to claim 7, wherein the method for arranging the temperature measuring devices on the measuring points on the surface and the lower part of the concrete comprises the following steps:
the concrete surface temperature measuring points are arranged at the positions 50mm away from the concrete surface, and the concrete bottom temperature measuring points are arranged at the positions 50-100mm above the bottom surface of the concrete casting.
9. The automatic temperature control system for mass concrete according to claim 5, wherein when the temperature sensor is embedded in the concrete, the sensor part and the transmission wire part of the temperature sensor respectively adopt a sealing protection measure to prevent the sensor and the transmission wire from being damaged in the construction process.
10. The automatic temperature control system for mass concrete according to claim 2, wherein the temperature difference between the surface and the inside of the concrete monitored by the temperature monitoring system exceeds 20 ℃ when the thickness of the concrete is less than 1.5m, exceeds 25 ℃ when the thickness of the concrete is 1.5-2.5 m or exceeds 28 ℃ when the thickness of the concrete is more than 2.5m, and/or the cooling rate is more than 2.0 ℃/d or the cooling rate is more than 1.0 ℃ every 4h, so that automatic alarm is given, and temperature control measures are adjusted and optimized.
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|---|---|---|---|---|
| JPH1082172A (en) * | 1996-09-06 | 1998-03-31 | Ohbayashi Corp | Form for placing concrete and concrete temperature control method |
| CN207300437U (en) * | 2017-08-24 | 2018-05-01 | 北京融通智慧科技有限公司 | The mass concrete wireless temperature-measuring terminal device of wisdom building site control platform |
| CN113668864A (en) * | 2021-09-26 | 2021-11-19 | 李硕 | Large-volume concrete condensing device |
| CA3186969A1 (en) * | 2020-07-21 | 2022-01-27 | Sai Anudeep Reddy MADDI | Thermo-piezoresistive embedded wireless sensor with real-time concrete monitoring |
| CN217765280U (en) * | 2022-05-30 | 2022-11-08 | 贵州路桥集团有限公司 | Temperature monitoring device |
-
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- 2022-11-30 CN CN202211516665.9A patent/CN115949254A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1082172A (en) * | 1996-09-06 | 1998-03-31 | Ohbayashi Corp | Form for placing concrete and concrete temperature control method |
| CN207300437U (en) * | 2017-08-24 | 2018-05-01 | 北京融通智慧科技有限公司 | The mass concrete wireless temperature-measuring terminal device of wisdom building site control platform |
| CA3186969A1 (en) * | 2020-07-21 | 2022-01-27 | Sai Anudeep Reddy MADDI | Thermo-piezoresistive embedded wireless sensor with real-time concrete monitoring |
| CN113668864A (en) * | 2021-09-26 | 2021-11-19 | 李硕 | Large-volume concrete condensing device |
| CN217765280U (en) * | 2022-05-30 | 2022-11-08 | 贵州路桥集团有限公司 | Temperature monitoring device |
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