Concrete curing device for foundation construction in low-temperature environment and construction method

Abstract

The invention belongs to the technical field of concrete curing, and particularly relates to a concrete curing device for low-temperature environment foundation construction and a construction method.According to the concrete curing device for low-temperature environment foundation construction, an air film covers the upper portion of a foundation pit, the foundation pit and the air film define a closed curing space, and an air film face is arranged in an inner cavity of the air film, so that the heat preservation performance of the air film is guaranteed; the monitoring mechanism is arranged in the maintenance space, the temperature and humidity in the maintenance space and the environment condition are monitored through the monitoring mechanism, data are transmitted to the central control unit, and the central control unit adjusts the temperature in the maintenance space by controlling the heating mechanism; the humidity in the curing space is adjusted by controlling the curing mechanism, and when the environment condition in the curing space is not beneficial to concrete curing, workers are informed through the alarm device, so that timely adjustment is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete curing, and in particular relates to a concrete curing device and a construction method for foundation construction in a low-temperature environment. Background Art

[0002] As a major building material, concrete is widely used in various civil and industrial buildings.

[0003] In some areas in the north, winter lasts for a long time. In order to meet the needs of rapid construction and shorten the construction period, construction must be carried out in winter. Under cold conditions, there are the following problems in concrete maintenance, such as: the concrete curing age is long and the curing effect is poor; the concrete is easily frozen in the early stage after pouring; the moisture contained in the concrete material is easily frozen, resulting in material damage.

[0004] In this regard, a concrete curing device and a construction method for foundation construction in a low temperature environment are proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a concrete curing device and a construction method for foundation construction in a low temperature environment to solve the above problems.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A concrete curing device for foundation construction in a low-temperature environment, comprising: an air film, which is arranged above a foundation pit and encloses a curing space with the foundation pit, the air film is fixed to the ground through a fixing bracket, and an air film surface is arranged in the inner cavity of the air film;

[0008] The maintenance space is connected to a heating mechanism and a maintenance mechanism. A monitoring mechanism is arranged in the maintenance space. The heating mechanism, the maintenance mechanism and the monitoring mechanism are all electrically connected to a central control unit. The maintenance mechanism is used to spray a curing agent onto the concrete. The central control unit is electrically connected to an alarm device and an energy supply mechanism.

[0009] In a concrete curing device for foundation construction in a low-temperature environment of the present invention, the heating mechanism comprises a heat pump, the heat pump is electrically connected to the central control unit, and the heating end of the heat pump penetrates into the curing space.

[0010] In a concrete curing device for foundation construction in a low-temperature environment of the present invention, the curing mechanism includes an atomizer, the atomizer is electrically connected to the central control unit, the spray end of the atomizer penetrates into the curing space, and the spray end of the atomizer is located above the concrete in the foundation pit.

[0011] In a concrete curing device for foundation construction in a low-temperature environment of the present invention, the monitoring mechanism includes a temperature sensor and a wireless sensor arranged in the curing space, the temperature sensor is arranged on the upper part of the concrete to be cured, and the temperature sensor and the wireless sensor are both electrically connected to the central control unit through a wireless transmission device, and the wireless transmission device is fixed to the outer wall of the air membrane.

[0012] In a concrete curing device for foundation construction in a low-temperature environment of the present invention, the energy supply mechanism includes a solar panel, the solar panel is electrically connected to a battery through a controller, and the battery is electrically connected to the central control unit.

[0013] In a concrete curing device for foundation construction in a low temperature environment of the present invention, the components of the curing agent include calcium oleate, polycarboxylic acid-based high-efficiency water reducing agent, liquid alkaline silicate, citric acid, thickener, antifreeze component and water.

[0014] The construction method of the maintenance device comprises the following steps: selecting the material of the air film according to the environmental conditions of the construction site, installing a fixed bracket on the ground around the foundation pit, fixing the outer edge of the air film on the fixed bracket, filling air into the inner cavity of the air film to form an air film surface, making the air film expand and remain stable, and the air film and the foundation pit are enclosed to form a maintenance space;

[0015] A monitoring mechanism is set up in the maintenance space and electrically connected to the central control unit. The heating mechanism and the maintenance mechanism are connected to the maintenance space. The heating mechanism and the maintenance mechanism are electrically connected to the central control unit. The energy supply mechanism is electrically connected to the central control unit. The construction is completed.

[0016] In the construction method of the present invention, the material of the air membrane includes ETFE membrane material.

[0017] In the construction method of the present invention, the outer wall of the air film is coated with one or more of an anti-corrosion coating, a wear-resistant coating, a self-cleaning coating, a reinforcement coating and a thermal insulation layer.

[0018] Compared with the prior art, the present invention has the following advantages and technical effects:

[0019] In the present invention, an air film cover is arranged above the foundation pit, so that the foundation pit and the air film are enclosed to form a closed curing space, and an air film surface is arranged in the inner cavity of the air film, so that the thermal insulation of the air film is ensured, so that the temperature of the curing space is not easily lost, and a monitoring mechanism is arranged in the curing space, and the temperature, humidity and environmental conditions in the curing space are monitored by the monitoring mechanism, and the data is transmitted to the central control unit. The central control unit adjusts the temperature in the curing space by controlling the heating mechanism, and adjusts the humidity in the curing space by controlling the curing mechanism. When the environmental conditions in the curing space are not conducive to concrete curing, the staff is notified by the alarm device, so as to facilitate timely adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Among them, 1. Air film; 2. Temperature sensor; 3. Wireless transmission device; 4. Central control unit; 5. Solar panel; 6. Battery; 7. Controller; 8. Heat pump; 9. Atomizer; 10. Wireless sensor; 11. Alarm device. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Reference Figure 1 The present invention discloses a concrete curing device for foundation construction in a low temperature environment, comprising: an air film 1, which is arranged above a foundation pit and encloses a curing space with the foundation pit, the air film 1 is fixed to the ground through a fixed bracket, and an air film surface is arranged in the internal cavity of the air film 1;

[0026] The maintenance space is connected to a heating mechanism and a maintenance mechanism. A monitoring mechanism is arranged in the maintenance space. The heating mechanism, the maintenance mechanism and the monitoring mechanism are all electrically connected to the central control unit 4. The maintenance mechanism is used to spray the curing agent onto the concrete. The central control unit 4 is electrically connected to an alarm device 11 and an energy supply mechanism.

[0027] ETFE (ethylene-tetrafluoroethylene copolymer) membrane material is selected as the air membrane 1, a connecting base is constructed around the foundation pit, a fixed bracket is installed on the base (or the fixed bracket is directly driven into the ground for fixation), and the outer edge of the air membrane 1 is fixed on the fixed bracket. The fixing method can be selected by anchor nails or sutures, which can be selected according to one's own needs. The outer edge of the air membrane 1 is covered on the ground around the foundation pit and compacted to increase the sealing performance, and the air is inflated into the air membrane 1 through an inflation device to make it reach a predetermined expansion state. The installed air membrane 1 has a streamlined shape, which can disperse the internal pressure of the maintenance space, enhance the stability of the air membrane 1 structure, reduce wind resistance, and improve the wind resistance of the air membrane 1; fiber materials (such as glass fiber, carbon fiber, etc.) are bonded to the outer wall of the air membrane 1, and a temporary steel bracket is added under the air membrane 1. A zipper system is provided on the outside of the air membrane 1. The cable is composed of high-strength steel wire rope or synthetic fiber rope. By connecting the fixed points at the edge of the air membrane 1 and the anchor points on the ground or surrounding buildings, a stable tension network is formed, which increases the structural strength of the air membrane 1 and its ability to resist wind and snow, reduces the vibration and shaking of the air membrane 1 in the wind, and improves the overall stability of the structure.

[0028] In a feasible solution, the heating mechanism includes a heat pump 8, the heat pump 8 is electrically connected to the central control unit 4, and the heating end of the heat pump 8 penetrates into the maintenance space.

[0029] In a feasible solution, the maintenance mechanism includes an atomizer 9, which is electrically connected to the central control unit 4, and the spray end of the atomizer 9 penetrates into the maintenance space, and the spray end of the atomizer 9 is located above the concrete in the foundation pit.

[0030] In a feasible solution, the monitoring mechanism includes a temperature sensor 2 and a wireless sensor 10 arranged in the curing space. The temperature sensor 2 is arranged on the upper part of the concrete to be cured. The temperature sensor 2 and the wireless sensor 10 are electrically connected to the central control unit 4 through a wireless transmission device 3. The wireless transmission device 3 is fixed to the outer wall of the air membrane 1.

[0031] A temperature sensor 2 is arranged in the curing space. The temperature sensor 2 is arranged above the concrete. The temperature sensor 2 is fixed to the inner wall of the air membrane 1 by bonding or special fixing methods. The number of temperature sensors 2 per square meter is 1-2. The temperature sensor 2 is electrically connected to the central control unit 4 through a wireless transmission device 3. The temperature sensor 2 is in the shape of a small chip, and a waterproof and dustproof protective layer is coated on the surface to ensure that it can still work normally in harsh environments. The wireless transmission device 3 is fixedly installed on the outside of the air membrane 1, and contains a data processing and signal transmission module inside. Its outer shell is made of waterproof material to ensure that it can still work normally in a humid environment.

[0032] The wireless sensor 10 is set in the maintenance space, and the wireless sensor 10 includes but is not limited to oxygen concentration sensors, harmful gas sensors, etc. to ensure the safety of the maintenance environment; an alarm device 11 is set. When the wireless sensor 10 detects an abnormal environment, the alarm device 11 can be triggered to promptly notify relevant personnel for processing.

[0033] In a feasible solution, the energy supply mechanism includes a solar panel 5 , the solar panel 5 is electrically connected to a battery 6 via a controller 7 , and the battery 6 is electrically connected to a central control unit 4 .

[0034] The controller 7 is a solar controller.

[0035] In a feasible solution, the ingredients of the curing agent include calcium oleate, polycarboxylic acid-based high-efficiency water reducing agent, liquid alkaline silicate, citric acid, thickener, antifreeze component and water.

[0036] The construction method of the maintenance device comprises the following steps: selecting the material of the air film 1 according to the environmental conditions of the construction site, installing a fixed bracket on the ground around the foundation pit, and fixing the outer edge of the air film 1 on the fixed bracket, filling air into the inner cavity of the air film 1 to form an air film surface, so that the air film 1 expands and remains stable, and the air film 1 and the foundation pit are enclosed to form a maintenance space;

[0037] A monitoring mechanism is set up in the maintenance space, and the monitoring mechanism is electrically connected to the central control unit 4, the heating mechanism and the maintenance mechanism are connected to the maintenance space, the heating mechanism and the maintenance mechanism are electrically connected to the central control unit 4, and the energy supply mechanism is electrically connected to the central control unit 4, and the construction is completed.

[0038] In a feasible solution, the material of the air membrane 1 includes ETFE (ethylene-tetrafluoroethylene copolymer) membrane material.

[0039] ETFE (ethylene-tetrafluoroethylene copolymer) membrane has high temperature resistance (-200-150℃), excellent light transmittance (up to 95%) and ductility. It is also resistant to corrosion by all chemicals and can resist the erosion of chemicals during concrete curing.

[0040] In a feasible solution, the outer wall of the air film 1 is coated with one or more of an anti-corrosion coating, a wear-resistant coating, a self-cleaning coating, a reinforcement coating and a thermal insulation layer.

[0041] One specific example:

[0042] In the power construction foundation, the region is the Northeast, and the season is winter. ETFE (ethylene-tetrafluoroethylene copolymer) membrane material is selected as the air membrane 1, and a connecting base is built around the foundation pit. A fixed bracket is installed on the base (or the fixed bracket is directly driven into the ground for fixation), and the outer edge of the air membrane 1 is fixed on the fixed bracket. The fixing method can be selected with anchor nails or sutures, which can be selected according to one's own needs. The outer edge of the air membrane 1 is covered on the ground around the foundation pit and compacted to increase the sealing performance, and the air is inflated into the air membrane 1 through the inflation equipment to make it reach a predetermined expansion state. The installed air membrane 1 has a streamlined shape, which can disperse the internal pressure of the maintenance space, enhance the stability of the air membrane 1 structure, reduce wind resistance, and improve the wind resistance of the air membrane 1; fiber materials (such as glass fiber, carbon fiber, etc.) are bonded to the outer wall of the air membrane 1, and a temporary steel bracket is added under the air membrane 1. A zipper system is provided on the outside of the air membrane 1. The cable is composed of high-strength steel wire rope or synthetic fiber rope. By connecting the fixed points at the edge of the air membrane 1 and the anchor points on the ground or surrounding buildings, a stable tension network is formed, which increases the structural strength of the air membrane 1 and its ability to resist wind and snow, reduces the vibration and shaking of the air membrane 1 in the wind, and improves the overall stability of the structure.

[0043] A temperature sensor 2 is arranged in the curing space. The temperature sensor 2 is arranged above the concrete. The temperature sensor 2 is fixed to the inner wall of the air membrane 1 by bonding or special fixing methods. The number of temperature sensors 2 per square meter is 1-2. The temperature sensor 2 is electrically connected to the central control unit 4 through a wireless transmission device 3. The temperature sensor 2 is in the shape of a small chip, and a waterproof and dustproof protective layer is coated on the surface to ensure that it can still work normally in harsh environments. The wireless transmission device 3 is fixedly installed on the outside of the air membrane 1, and contains a data processing and signal transmission module inside. Its outer shell is made of waterproof material to ensure that it can still work normally in a humid environment.

[0044] The curing temperature is set at 5-20℃ and the curing humidity is 40%-60%.

[0045] A solar panel 5 and a battery 6 are arranged on the ground outside the air membrane 1, and the battery 6 is electrically connected to the solar panel 5 through a solar controller, and the battery 6 is electrically connected to the central control unit 4, and the heat pump 8 and the atomizer 9 are electrically connected to the central control unit 4, and the spray end of the atomizer 9 is extended into the air membrane 1 and arranged above the concrete, and the curing agent is sprayed onto the concrete through the atomizer 9, and the heat pump 8 is used to supply heat to the curing space. The heat pump 8 is an air source heat pump, and the atomizer 9 is a high-pressure atomizer. At the same time, a backup heating device is provided to prevent the temperature in the curing space from being lower than the set temperature due to insufficient heat supply from the heat pump 8;

[0046] The ingredients of the curing agent include: by weight: 20% calcium oleate, 5% polycarboxylic acid-based high-efficiency water reducing agent, 10% liquid alkaline silicate, 2% citric acid, add an appropriate amount of thickener according to the viscosity of the previous liquid, add antifreeze components according to actual use requirements, the mass of the antifreeze components does not exceed 5% of the curing agent, and the remaining amount is made up with water, so that the total amount of the curing agent is 100%, and calcium oleate, polycarboxylic acid-based high-efficiency water reducing agent, liquid alkaline silicate and citric acid are weighed and mixed evenly according to the above proportions. Add an appropriate amount of water and stir while adding until a uniform liquid is formed. Add thickener and antifreeze components as needed, and continue stirring until completely dissolved. Use an atomizer 9 to atomize the curing agent and spray it evenly on the concrete surface.

[0047] The wireless sensor 10 is set in the maintenance space, and the wireless sensor 10 includes but is not limited to oxygen concentration sensors, harmful gas sensors, etc. to ensure the safety of the maintenance environment; an alarm device 11 is set. When the wireless sensor 10 detects an abnormal environment, the alarm device 11 can be triggered to promptly notify relevant personnel for processing.

[0048] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A concrete curing device for foundation construction in a low temperature environment, characterized in that: include: An air film (1) is arranged above the foundation pit and encloses a maintenance space with the foundation pit. The air film (1) is fixed to the ground through a fixing bracket. An air film surface is arranged in the internal cavity of the air film (1); The curing space is connected to a heating mechanism and a curing mechanism. A monitoring mechanism is arranged in the curing space. The heating mechanism, the curing mechanism and the monitoring mechanism are all electrically connected to a central control unit (4). The curing mechanism is used to spray a curing agent onto the concrete. The central control unit (4) is electrically connected to an alarm device (11) and an energy supply mechanism.

2. A concrete curing device for foundation construction in a low temperature environment according to claim 1, characterized in that: The heating mechanism comprises a heat pump (8), the heat pump (8) is electrically connected to the central control unit (4), and the heating end of the heat pump (8) penetrates into the maintenance space.

3. The concrete curing device for foundation construction in a low temperature environment according to claim 1, characterized in that: The maintenance mechanism comprises an atomizer (9), the atomizer (9) is electrically connected to the central control unit (4), a spray end of the atomizer (9) penetrates into the maintenance space, and the spray end of the atomizer (9) is located above the concrete in the foundation pit.

4. A concrete curing device for foundation construction in a low temperature environment according to claim 1, characterized in that: The monitoring mechanism comprises a temperature sensor (2) and a wireless sensor (10) arranged in the curing space, wherein the temperature sensor (2) is arranged on the upper part of the concrete to be cured, and the temperature sensor (2) and the wireless sensor (10) are both electrically connected to the central control unit (4) via a wireless transmission device (3), and the wireless transmission device (3) is fixed to the outer wall of the air membrane (1).

5. The concrete curing device for foundation construction in a low temperature environment according to claim 1, characterized in that: The energy supply mechanism comprises a solar panel (5), the solar panel (5) is electrically connected to a storage battery (6) via a controller (7), and the storage battery (6) is electrically connected to the central control unit (4).

6. The concrete curing device for foundation construction in a low temperature environment according to claim 1, characterized in that: The curing agent comprises calcium oleate, polycarboxylic acid-based high-efficiency water reducing agent, liquid alkaline silicate, citric acid, thickener, antifreeze component and water.

7. The method for constructing a maintenance device according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: selecting the material of the air film (1) according to the environmental conditions of the construction site, installing a fixed bracket on the ground around the foundation pit, fixing the outer edge of the air film (1) on the fixed bracket, filling the inner cavity of the air film (1) with air to form an air film surface, causing the air film (1) to expand and remain stable, and the air film (1) and the foundation pit to enclose a maintenance space; A monitoring mechanism is set up in the maintenance space and electrically connected to the central control unit (4), a heating mechanism and a maintenance mechanism are connected to the maintenance space, a heating mechanism and a maintenance mechanism are electrically connected to the central control unit (4), and an energy supply mechanism is electrically connected to the central control unit (4), and construction is completed.

8. The construction method according to claim 7, characterized in that: The material of the air membrane (1) includes ETFE (ethylene-tetrafluoroethylene copolymer) membrane material.

9. The construction method according to claim 7, characterized in that: The outer wall of the air film (1) is coated with one or more of an anti-corrosion coating, a wear-resistant coating, a self-cleaning coating, a reinforcement coating and a thermal insulation layer.

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