CN111441588A - Intelligent maintenance system and maintenance method for mass concrete - Google Patents

Intelligent maintenance system and maintenance method for mass concrete Download PDF

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Publication number
CN111441588A
CN111441588A CN202010406434.7A CN202010406434A CN111441588A CN 111441588 A CN111441588 A CN 111441588A CN 202010406434 A CN202010406434 A CN 202010406434A CN 111441588 A CN111441588 A CN 111441588A
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CN
China
Prior art keywords
water
concrete
maintenance
curing
template
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Pending
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CN202010406434.7A
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Chinese (zh)
Inventor
张会东
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Central Research Institute of Building and Construction Co Ltd MCC Group
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Central Research Institute of Building and Construction Co Ltd MCC Group
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Application filed by Central Research Institute of Building and Construction Co Ltd MCC Group filed Critical Central Research Institute of Building and Construction Co Ltd MCC Group
Priority to CN202010406434.7A priority Critical patent/CN111441588A/en
Publication of CN111441588A publication Critical patent/CN111441588A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02Conveying or working-up concrete or similar masses able to be heaped or cast
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00Methods or layout of installations for water supply
    • E03B1/02Methods or layout of installations for water supply for public or like main supply for industrial use
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03BINSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B11/00Arrangements or adaptations of tanks for water supply
    • E03B11/10Arrangements or adaptations of tanks for water supply for public or like main water supply
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass

Abstract

The utility model provides a bulky concrete intelligence maintenance system is including setting up template (2) and the setting of permeating water that set up in bulky concrete (1) periphery and hug closely bulky concrete lateral wall and set up in template (2) periphery and the interim breakwater (3) of leaving certain distance with template (2) of permeating water, form certain spatial structure between template (2) and the interim breakwater (3) of permeating water, be equipped with controllable intelligent circulation maintenance water (4) of temperature in this spatial structure, the template (2) and bulky concrete (1) upper surface that highly inundate of maintenance water (4). The invention also discloses a corresponding maintenance method. According to the maintenance system, full-water covering maintenance is carried out on the mass concrete, so that the hydration heat temperature diffusion of the mass concrete is controlled, the surface shrinkage cracks of the mass concrete are prevented, and complicated manual intervention is reduced.

Description

Intelligent maintenance system and maintenance method for mass concrete
Technical Field
The invention belongs to the technical field of civil engineering, and particularly relates to an intelligent maintenance system and method for mass concrete.
Background
The method is specified in Chinese 'Mass concrete construction Standard' GB 50496-2018: mass concrete with concrete structure body minimum geometric dimension not less than 1m, or concrete which is expected to cause harmful crack generation due to temperature change and shrinkage caused by hydration of cementing material in concrete, is called large volume concrete. The cement hydration heat release is concentrated, and the internal temperature rise is fast. When the temperature difference between the inside and the outside of the concrete is large, the concrete can generate temperature cracks, and the structural safety and normal use are influenced. The American Concrete Institute (ACI) specifies: "any in-place poured mass concrete, which is large in size, must address the heat of hydration and the consequent volumetric deformation to minimize cracking".
Causes of cracks in mass concrete include: 1. cement hydration heat; 2. the outside air temperature changes; 3. shrinkage of the concrete.
The control measures adopted at present mainly include: in a large-volume concrete project (not including a water conservancy dam project) of civil and industrial building structures, the hydration heat is controlled by adjusting the concrete proportion and additives; the surface of concrete is covered with materials such as film, geotextile or heat preservation quilt, meanwhile, a maintenance shed is built to control the interference of the change of outside temperature to mass concrete, and the amount of covering materials, the watering maintenance frequency and the water temperature are dynamically adjusted by combining temperature and stress monitors, so that the purposes of controlling the internal temperature of concrete and preventing the surface concrete from drying and cracking are achieved.
These measures play an important role in controlling the internal temperature and surface cracks caused by the temperature of the concrete. However, the method still has imperfect effects, the concrete surface needs a great amount of manual intervention and timely management, and good covering protection is difficult to form on some surfaces with reserved steel bars, so that a plurality of cracks appear on the concrete surface, even the details of temperature control are not in place, the effects are often not ideal, especially in some variable cross-section areas or in difficult-to-better covering areas, and the drying shrinkage cracks appear due to the high difficulty of moisture preservation under the heat preservation quilt.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an intelligent maintenance system and a maintenance method for mass concrete, which are used for controlling the hydration heat temperature diffusion of the mass concrete, preventing the surface of the mass concrete from drying shrinkage cracks and reducing complicated manual intervention.
In order to achieve the above purpose, the invention adopts the following technical scheme:
in one aspect, the invention provides an intelligent maintenance system for mass concrete, which comprises a permeable formwork and a temporary water retaining wall, wherein the permeable formwork is arranged on the periphery of the mass concrete and is tightly attached to the side wall of the mass concrete, the temporary water retaining wall is arranged on the periphery of the permeable formwork and is at a certain distance from the permeable formwork, a certain space structure is formed between the permeable formwork and the temporary water retaining wall, temperature-controllable circulating maintenance water is contained in the space structure, and the maintenance water submerges the permeable formwork and the upper surface of the mass concrete.
Further, as mentioned above, the intelligent maintenance system for mass concrete is characterized in that a temperature monitor and a stress monitor are arranged inside the mass concrete and used for monitoring the internal temperature and stress of the mass concrete in real time.
Further, as above-mentioned bulky concrete intelligence maintenance system, be equipped with temperature sensor in the maintenance water for the temperature of real-time supervision maintenance water.
Furthermore, like the above-mentioned bulky concrete intelligence maintenance system be equipped with maintenance water automatic temperature control circulating device outside the interim breakwater for realize the automatic temperature control and the automatic cycle of maintenance water.
Further, as above-mentioned bulky concrete intelligence maintenance system, the automatic temperature control circulating device of maintenance water includes maintenance water automatic cycle device, and this maintenance water automatic cycle device includes the storage water tank, connects inlet tube and the drain pipe on the storage water tank and sets up the water pump on the inlet tube, and the other end and the upper portion of spatial structure of inlet tube intercommunication for to the inside maintenance water that pours into of spatial structure, the other end of drain pipe passes interim breakwater and spatial structure's lower part intercommunication, is used for discharging the maintenance water after having absorbed the bulky concrete heat.
Further, as mentioned above, in the large-volume concrete intelligent maintenance system, a heat exchanger and a temperature sensor are arranged in the water storage tank and used for controlling and detecting the water temperature in the water storage tank.
Further, as for the above-mentioned mass concrete intelligent maintenance system, the automatic temperature control circulating device of the maintenance water further comprises an automatic temperature control device of the maintenance water, and the automatic temperature control device of the maintenance water comprises a data receiving unit and an execution unit; the data receiving unit is used for receiving data monitored by the temperature monitor, the stress monitor and the temperature sensor, judging whether the data is in a specified range, and if the data exceeds a preset value, sending a command to the execution unit; the execution unit is used for receiving the command sent by the data receiving unit and controlling the opening frequency and the duration of the water pump or/and the opening degree of a valve on the heat exchanger.
Further, as above-mentioned bulky concrete intelligence maintenance system, the height of interim breakwater is greater than the template height of permeating water.
Further, as mentioned above, the maintenance greenhouse is arranged on the periphery of the temporary water retaining wall.
The invention has the beneficial technical effects that:
(1) according to the intelligent maintenance system, during maintenance, the mass concrete can be completely moisturized by performing full-water covering maintenance on the mass concrete, so that shrinkage cracks caused by surface water shortage can be avoided, the shrinkage phenomenon caused by rapid water loss of the mass concrete is effectively controlled, and factors such as incomplete manual operation, errors and the like are avoided;
(2) according to the intelligent maintenance system, the automatic temperature control circulating device for the maintenance water is arranged, so that the maintenance water can quickly take away heat generated in the hydration heat process of the concrete, and continuous high temperature in mass concrete is avoided; the curing water temperature can be accurately controlled, and the difference between the surface temperature and the internal temperature of the concrete is ensured to be within a specified range by combining a large-volume concrete internal temperature stress monitor, so that the temperature stress is avoided;
(3) the labor investment is reduced greatly, the tedious processes of increasing or reducing geotechnical cloth, heat preservation quilt and the like repeatedly by manpower are reduced, the labor multifunctional intensity of workers is reduced, and the labor efficiency is improved.
On the other hand, the invention also provides an intelligent maintenance method for mass concrete, which adopts the maintenance system and comprises the following steps:
(a) before the construction of mass concrete is completed, a temperature monitor and a stress monitor are arranged in the mass concrete;
(b) after the construction of the mass concrete is finished, arranging a water permeable template at the periphery of the mass concrete, wherein the water permeable template is tightly attached to the outer wall of the mass concrete;
(c) arranging a temporary water retaining wall on the periphery of the permeable template to ensure that a certain distance is reserved between the temporary water retaining wall and the permeable template, so that a certain space structure is formed between the temporary water retaining wall and the permeable template;
(d) arranging a maintenance water automatic temperature control circulating device outside the temporary water retaining wall, wherein the maintenance water automatic temperature control circulating device comprises a maintenance water automatic circulating device and a maintenance water automatic temperature control device; the automatic maintenance water circulating device comprises a water storage tank, a water inlet pipe and a water outlet pipe which are connected with the water storage tank, and a water pump arranged on the water inlet pipe; the other end of the water inlet pipe is communicated with the upper part of the space structure, and the other end of the water outlet pipe penetrates through the temporary water retaining wall to be communicated with the lower part of the space structure; the automatic temperature control device for the curing water comprises a data receiving unit and an execution unit, wherein the data receiving unit is electrically connected with a temperature monitor and a stress monitor, and the execution unit is electrically connected with the data receiving unit; the execution unit receives the command sent by the data receiving unit and controls the water temperature of the maintenance water by controlling the opening frequency and the duration of the water pump or/and the opening degree of a valve on the heat exchanger;
(e) and curing water is injected into the space structure between the temporary water retaining wall and the water permeable template through the water inlet pipe, so that the curing water is ensured to submerge the upper surface of the water permeable template and the large-volume concrete.
The beneficial technical effects of the maintenance method of the invention are the same as those of the maintenance system, and the details are not repeated here.
Drawings
FIG. 1 is a schematic structural diagram of an intelligent maintenance system for mass concrete according to the present invention.
In the figure: 1-mass concrete 2-permeable formwork 3-temporary water retaining wall 4-curing water 5-curing water automatic temperature control circulating device 6-water inlet pipe 7-water outlet pipe 8-temperature monitor 9-stress monitor 10-temperature sensor 11-curing greenhouse 12-water storage tank 13-heat exchanger
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1, the intelligent maintenance system for mass concrete of the invention comprises a permeable formwork 2, a temporary water retaining wall 3, maintenance water 4, an automatic temperature control circulating device 5 for the maintenance water, a temperature monitor 8, a stress monitor 9, a temperature sensor 10 and a maintenance greenhouse 11.
The permeable formwork 2 is arranged on the periphery of the mass concrete 1 and clings to the side wall of the mass concrete, so that moisture preservation and heat conduction are facilitated. The permeable template 2 is preferably a permeable cloth template with good wear resistance.
The temporary water retaining wall 3 is arranged on the periphery of the water permeable formwork 2 and is a certain distance away from the water permeable formwork 2, so that a certain space structure is formed between the temporary water retaining wall and the water permeable formwork 2 and is used for maintaining water circulation. The height of the temporary water retaining wall 3 is larger than that of the permeable formwork 2, so that the maintenance water is prevented from overflowing. It should be noted that the temporary water retaining wall 3 of the present invention is not limited to this structure, and may be a water retaining body of other similar structures.
The maintenance water 4 is injected into the space structure, and the height of the maintenance water is preferably to submerge the permeable formwork and the upper surface of the mass concrete, so that the mass concrete is completely covered and maintained, and the surface of the concrete is prevented from drying and cracking, the temperature difference between the surface of the mass concrete and the inside of the mass concrete is prevented from exceeding the specified range, and the temperature stress is avoided. A temperature sensor 10 is provided in the curing water 4 for monitoring the curing water temperature in real time.
Before the construction of bulky concrete is completed, the temperature monitor 8 and the stress monitor 9 are both arranged inside the bulky concrete 1 and used for monitoring the internal temperature and the internal stress of the bulky concrete in real time and avoiding the surface and internal temperature difference of the bulky concrete from exceeding the limit value.
The automatic temperature control circulating device 5 for the curing water is arranged outside the temporary water retaining wall 3 and used for ensuring water circulation in the space structure and controlling the temperature of the curing water in the space structure. The automatic temperature control circulating device 5 for the curing water comprises an automatic circulating device for the curing water and an automatic temperature control device for the curing water.
The automatic maintenance water circulating device comprises a water storage tank 12, a water inlet pipe 6 and a water outlet pipe 7 which are connected to the water storage tank 12, and a water pump arranged on the water inlet pipe 6. The other end of the water inlet pipe 6 is communicated with the upper part of the space structure, the maintenance water 4 is injected into the space structure through the water pump, the other end of the water discharge pipe 7 penetrates through the temporary water retaining wall 3 to be communicated with the lower part of the space structure, and the maintenance water after heat released by mass concrete is absorbed is discharged. Therefore, the water storage tank 12, the water inlet pipe 6, the water discharge pipe 7 and the space structure form an automatic maintenance water circulation channel, and heat generated in the hydration heat process of mass concrete can be taken away quickly.
The automatic temperature control device for the curing water comprises a data receiving unit and an execution unit, wherein the data receiving unit is used for receiving data transmitted by a temperature monitor 8, a stress monitor 9 and a temperature sensor 10, judging whether the data are in a specified range or not, and sending a command to the execution unit if the data exceed a preset value; the execution unit is used for receiving the command sent by the data receiving unit and controlling the opening frequency and the duration of the water pump or/and the opening degree of a valve on the heat exchanger 13 according to the command, so that the water temperature of the maintenance water is controlled.
To further regulate the temperature of the water in the storage tank 12, a heat exchanger 13 is provided within the storage tank 12. When the temperature monitor 8 monitors that the temperature in the mass concrete 1 is continuously high and the temperature is difficult to be reduced in a short time through normal curing water circulation or the temperature of the curing water is too high, the heat exchanger 13 is started to exchange the heat of the curing water to control and reduce the temperature of the curing water.
Preferably, a temperature sensor may also be provided in the storage tank 12 to detect the temperature of the curing water in the storage tank 12 in real time.
According to the maintenance system, when the internal temperature of the concrete reaches the requirements in the construction standard of mass concrete, the maintenance system can be removed, and the maintenance greenhouse 11 is arranged on the periphery of the mass concrete, so that the influence of the change of the external temperature on the mass concrete is avoided.
The invention also provides an intelligent maintenance method of the mass concrete, and the mass concrete maintenance system comprises the following steps:
(a) before the construction of mass concrete is completed, a temperature monitor 8 and a stress monitor 9 are arranged in the mass concrete;
(b) after the construction of the mass concrete is finished, arranging a water permeable template 2 at the periphery of the mass concrete, wherein the water permeable template 2 is tightly attached to the outer wall of the mass concrete 1;
(c) arranging a temporary water retaining wall 3 on the periphery of the water permeable template 2, and ensuring a certain distance between the temporary water retaining wall 3 and the water permeable template 2 so as to form a certain space structure between the temporary water retaining wall 3 and the water permeable template 2;
(d) arranging a maintenance water automatic temperature control circulating device 5 outside the temporary water retaining wall 3, communicating the other end of a water inlet pipe 6 on the maintenance water automatic temperature control circulating device with the upper part of the space structure, and communicating a water outlet pipe 7 on the maintenance water automatic temperature control circulating device with the lower part of the space structure through the temporary water retaining wall 3;
(e) injecting circulating maintenance water 4 with controllable temperature into the space structure through a water inlet pipe 6, wherein the maintenance water has the height of submerging the upper surfaces of the permeable formwork 2 and the mass concrete 1;
(f) installing a temperature sensor 10 in the space structure;
(g) a data receiving unit of the automatic temperature control circulating device 5 of the maintenance water is electrically connected with a temperature monitor 8, a stress monitor 9 and a temperature sensor 10; electrically connecting an execution unit of the automatic temperature control circulating device 5 for the maintenance water with a water pump and a heat exchanger 13; the execution unit receives the command sent by the data receiving unit and controls the water temperature of the maintenance water by controlling the opening frequency and the duration of the water pump or/and the opening degree of a valve on the heat exchanger.
According to the maintenance method, after the concrete is judged to be finally set, the maintenance water is submerged into the large-volume concrete, the internal temperature condition of the large-volume concrete is combined, the water temperature of the maintenance water is controlled, the large-volume concrete is slowly cooled after hydration heat is finished, the temperature enters a cooling stage, the internal temperature of the concrete is controlled, the requirement of the large-volume concrete construction standard is met, and a maintenance greenhouse is arranged on the periphery of the temporary water retaining wall, so that the large-volume concrete is well maintained. According to the invention, because the concrete is cured in full water, before the temperature index of the mass concrete meets the requirement, the surface shrinkage crack caused by the humidity problem can not be generated, after the mass concrete reaches a certain strength, the curing water is removed, the surface of the concrete is dried, and the surface shrinkage crack caused by rapid air drying is avoided through the built external curing greenhouse.
It should be noted that this method is not directed to the large-volume concrete dam in hydroelectric power, because the concrete dam in hydroelectric power is different from the large-volume concrete standard implemented by the dam, and this method is directed to the engineering (such as nuclear engineering concrete) which can not adopt water pipe cooling, or the general industrial and civil large-volume concrete engineering. In addition, the method is put into use before the concrete is finally set and after the surface of the concrete is closed, and for the project that the construction amount of the concrete is large and the concrete cannot be poured in time, the existing method of surface moisture preservation and heat preservation of the waterproof membrane and the geotextile is combined before the concrete is finally set, and the method is put into use when the concrete is completely cured. For the segmental concrete pouring engineering with large pouring time difference, the scheme described in the method can be set in segments according to the construction segmentation condition, and a water temperature control circulating system is additionally arranged.
The mass concrete intelligent maintenance system and the maintenance method thereof are not limited to the above specific embodiments, and those skilled in the art can derive other embodiments according to the inventive concept and technical solution of the present invention, which also belong to the technical innovation and the scope of patent protection of the present invention.

Claims (10)

1. The utility model provides a bulky concrete intelligence maintenance system which characterized by: including setting up template (2) and setting up in bulky concrete (1) periphery and hugging closely the temporary breakwater (3) that the bulky concrete lateral wall was kept a certain distance in template (2) periphery and with template (2) that permeates water, form a spatial structure between template (2) and the temporary breakwater (3) that permeate water, hold controllable circulation maintenance water (4) of temperature intelligence in this spatial structure to maintenance water (4) submerge template (2) and bulky concrete (1) upper surface of permeating water.
2. The intelligent maintenance system for mass concrete as claimed in claim 1, wherein: the large-volume concrete (1) is internally provided with a temperature monitor (8) and a stress monitor (9) for monitoring the internal temperature and stress in real time.
3. The intelligent maintenance system for mass concrete as claimed in claim 2, wherein: and a temperature sensor (10) is arranged in the maintenance water (4) and is used for monitoring the temperature of the maintenance water (4) in the space structure in real time.
4. The intelligent maintenance system for mass concrete as claimed in any one of claims 1 to 3, wherein: and an automatic temperature control circulating device (5) for curing water is arranged outside the temporary water retaining wall (3) and is used for realizing the automatic temperature control and circulation of the curing water (4).
5. The intelligent maintenance system for mass concrete as claimed in claim 4, wherein: maintenance water automatic temperature control circulating device (5) is including maintenance water automatic circulating device, this maintenance water automatic circulating device includes storage water tank (12), inlet tube (6) and drain pipe (7) and the water pump of setting on inlet tube (6) of connection on storage water tank (12), the inlet tube (6) other end and spatial structure's upper portion intercommunication for to the inside maintenance water that pours into of spatial structure, the other end of drain pipe (7) passes interim breakwater (3) and spatial structure's lower part intercommunication, be used for discharging the maintenance water after having absorbed bulky concrete heat.
6. The bulk concrete curing system of claim 5, wherein: and a heat exchanger (13) and a temperature sensor are arranged in the water storage tank (12) and used for controlling and detecting the water temperature in the water storage tank.
7. The bulk concrete curing system of claim 6, wherein: the automatic temperature control circulating device (5) for the curing water also comprises an automatic temperature control device for the curing water, the automatic temperature control device for the curing water comprises a data receiving unit and an execution unit, and the data receiving unit is used for receiving data monitored by a temperature monitor (8), a stress monitor (9) and a temperature sensor (10); and the execution unit is used for receiving the command sent by the data receiving unit and controlling the opening frequency and the duration of the water pump or/and the opening degree of a valve on the heat exchanger (13).
8. The intelligent maintenance system for mass concrete as claimed in claim 7, wherein: the height of the temporary water retaining wall (3) is greater than that of the water permeable formwork (2).
9. The intelligent maintenance system for mass concrete as claimed in claim 8, wherein: and a maintenance greenhouse (11) is arranged on the periphery of the temporary water retaining wall (3).
10. An intelligent maintenance method for mass concrete comprises the following steps:
(a) before the construction of the mass concrete (1) is completed, a temperature monitor (8) and a stress monitor (9) are arranged in the mass concrete;
(b) after the construction of the mass concrete (1) is finished, arranging a water permeable template (2) at the periphery of the mass concrete (1), wherein the water permeable template (2) is tightly attached to the outer wall of the mass concrete (1);
(c) arranging a temporary water retaining wall (3) at the periphery of the water permeable template (2), ensuring a certain distance between the temporary water retaining wall (3) and the water permeable template (2), and forming a space structure between the temporary water retaining wall (3) and the water permeable template (2);
(d) arranging a curing water automatic temperature control circulating device (5) outside the temporary water retaining wall (3), wherein the curing water automatic temperature control circulating device (5) comprises a curing water automatic circulating device and a curing water automatic temperature control device; the automatic maintenance water circulating device comprises a water storage tank (12), a water inlet pipe (6) and a water outlet pipe (7) which are connected to the water storage tank (12), and a water pump arranged on the water inlet pipe (6); the other end of the water inlet pipe (6) is communicated with the upper part of the space structure, and the other end of the water discharge pipe (7) penetrates through the temporary water retaining wall (3) to be communicated with the lower part of the space structure; the automatic temperature control device for the curing water comprises a data receiving unit and an execution unit, wherein the data receiving unit is electrically connected with a temperature monitor (8) and a stress monitor (9), and the execution unit is electrically connected with the data receiving unit; the execution unit receives the command sent by the data receiving unit and controls the water temperature of the maintenance water by controlling the opening frequency and the duration of the water pump or/and the opening degree of a valve on the heat exchanger;
(e) and (3) injecting curing water (4) into a space structure between the temporary water retaining wall (3) and the permeable formwork (2) through a water inlet pipe (6) to ensure that the curing water submerges the upper surface of the permeable formwork (2) and the large-volume concrete (1).
CN202010406434.7A 2020-05-14 2020-05-14 Intelligent maintenance system and maintenance method for mass concrete Pending CN111441588A (en)

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CN202010406434.7A CN111441588A (en) 2020-05-14 2020-05-14 Intelligent maintenance system and maintenance method for mass concrete

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112696037A (en) * 2020-12-23 2021-04-23 重庆建工第三建设有限责任公司 Large-volume concrete comprehensive maintenance system
CN113789968A (en) * 2021-09-15 2021-12-14 中国水利水电第七工程局有限公司 Large-area concrete on-site water storage curing device and curing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112696037A (en) * 2020-12-23 2021-04-23 重庆建工第三建设有限责任公司 Large-volume concrete comprehensive maintenance system
CN113789968A (en) * 2021-09-15 2021-12-14 中国水利水电第七工程局有限公司 Large-area concrete on-site water storage curing device and curing method

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