JP3750900B2 - Concrete curing temperature monitoring device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a concrete curing temperature monitoring device capable of visually monitoring the curing temperature of concrete when the curing temperature of concrete is controlled while controlling the curing temperature at a construction site in a cold region.
[0002]
[Prior art]
When curing concrete such as the foundation of a house at a construction site in a cold region where the temperature is below freezing point, in order to prevent the concrete from freezing and shorten the curing period, an electric heat curing sheet with built-in electric heater is used. There is a case where a concrete heat curing method is used.
[0003]
As one of such concrete heat curing methods, there is a “basic concrete curing method” described in JP-A-10-220005 previously disclosed by the applicants of the present application. As shown in FIG. 6, this “curing method for foundation concrete” is a method in which concrete 6 is placed on a foundation mold 5 and then the foundation mold 5 is connected to a plurality of ceramic elements having PTC characteristics with conductive wires. It is covered with an electrothermal curing sheet 7 incorporating a linear PTC linear heater, and the electric heating curing sheet 7 is heated to cure the concrete 6 at a predetermined temperature. The PTC linear heater has a ceramic semiconductor as a main component, and has a self-control characteristic of an energization amount such that a resistance value increases rapidly when a certain temperature is reached and current cannot be passed. Therefore, the electric heat curing sheet 7 used in the “curing method for foundation concrete” does not need to be provided with a special temperature control device such as a bimetal, and the concrete 6 can be heated and cured at a predetermined temperature. There are advantages.
[0004]
However, in the above-mentioned “curing method for foundation concrete”, the operator can easily know whether the concrete curing temperature is an optimum temperature by generating heat until the PTC linear heater reaches a predetermined temperature. Can not. Therefore, in the unlikely event that the PTC heater breaks down and the temperature rises excessively, the response by the operator may be delayed. Thus, the concrete curing temperature can be easily monitored by an operator, thereby preventing accidents due to excessive temperature rise and further increasing the safety of the heat curing operation of the concrete 6, and always maintaining a constant temperature. Therefore, it was necessary to monitor the heat curing of the concrete 6 to improve the quality of the basic concrete 6.
[0005]
Further, if a concrete heating curing method such as the above-mentioned “curing method for basic concrete” is adopted, it is possible to prevent freezing of the concrete 6 during curing in a cold region and to shorten the curing period, and to reduce the outside temperature. Since the concrete 6 can be cured at a constant temperature without being affected, the construction period of the entire building can be shortened and the quality of the concrete 6 can be improved. Therefore, if you can widely inform customers, residents, and passersby that you are adopting such a concrete heat curing method, you will advertise construction technology and high reliability. It is desirable for the purpose of differentiating from customers and improving customer satisfaction. However, only by adopting the above-mentioned “curing method for basic concrete”, there is almost no knowledge of the advantages other than those who received explanations about this curing method, such as differentiation from other companies, improvement of customer satisfaction, etc. I can't plan.
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of the above problems, and in the case of employing a concrete heat curing method, it is possible to visually easily monitor whether the concrete curing temperature is kept constant at an optimum temperature. By making it possible to prevent accidents due to excessive temperature rise and to make the concrete heat curing work safer, the concrete quality is monitored by constantly monitoring the concrete at a constant temperature. Promote the improvement of construction technology and reliability by widely informing customers, surrounding residents, and passers-by of improvement and the adoption of concrete heat curing methods. The goal is to differentiate customers and improve customer satisfaction.
[0007]
[Means for Solving the Problems]
Specific means for solving the above-described object are as follows. That is, the concrete curing temperature monitoring device according to claim 1 covers the concrete after being placed in the mold in the cold region with the electrothermal curing sheet, and the entire mold covered with the electrothermal curing sheet is covered with the heat insulating sheet. A concrete curing temperature monitoring device used when performing concrete heat curing by covering, a temperature for detecting the concrete curing temperature inside the electrothermal curing sheet, the outside temperature, and the temperature of the ground covered with the heat retaining sheet A detection unit; a signal processing unit that converts the output signal from the temperature detection unit into a temperature display signal and outputs the signal; a concrete curing temperature inside the electrothermal curing sheet according to the temperature display signal from the signal processing unit; And a display unit for displaying the temperature of the ground covered with the heat insulating sheet .
[0008]
The concrete curing temperature monitoring device according to claim 2, wherein the temperature detection unit is any one of a concrete curing temperature inside the electrothermal curing sheet, an outside air temperature, and a temperature of the ground covered with the heat retaining sheet. For some or all of them, each has a plurality of temperature detectors for detecting temperatures at a plurality of locations, and the signal processing unit calculates an average value of output signals from the plurality of temperature detectors for each temperature. The temperature display signal is converted and output .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a concrete curing temperature monitoring device according to a first embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 4, the concrete curing temperature monitoring device 1 according to the first embodiment of the present invention includes a concrete curing temperature inside the electrothermal curing sheet 7, an outside temperature, and a temperature of the ground covered with the heat retaining sheet 15. , A signal processing unit 4 that converts the output signal a from the temperature detection unit 3 into a temperature display signal b and outputs the temperature display signal b, and an electrothermal curing according to the temperature display signal b from the signal processing unit 4 The display unit 2 displays the concrete curing temperature inside the sheet 7, the outside air temperature, and the temperature of the ground covered with the heat retaining sheet 15. This will be described in more detail below.
[0011]
In the present embodiment, the concrete heat curing method is a method for heating a foundation such as a house. After the concrete 6 is placed in the foundation mold 5, the foundation mold 5 is electrically heated in each row. Covering with the curing sheet 7, covering the whole of the foundation form 5 covered with the electrothermal curing sheet 7 with a heat insulating sheet 15, heating the electric heating curing sheet 7 and curing the concrete 6 at a predetermined temperature. It is. In such a concrete heat curing method, since it is further covered with a heat insulating sheet 15 from above the electrothermal curing sheet 7, it is possible to suppress the diffusion of heat generated in the electric heat curing sheet 7, and There exists an effect that the freezing of the ground 9 in the covered part can be prevented. Therefore, even when the ground 9 covered with the heat insulating sheet 15, that is, the floor foundation 9 surrounded by the basic concrete 6, needs to be rooted for providing bunds and soil concrete, the ground 9 It is possible to prevent the freezing of the glass from becoming an obstacle.
[0012]
The temperature detector 3 is provided to detect the concrete curing temperature and the outside air temperature inside the electrothermal curing sheet 7, respectively. Accordingly, among the temperature detectors 8 constituting the temperature detector 3, the temperature detector 8 for detecting the concrete curing temperature is installed at any position in the internal space covered by the electrothermal curing sheet 7. To do. More specifically, it is installed at a position where it is not affected by the temperature of other portions such as the ground 9 by being hooked into holes formed in the ribs of the mold 5. Moreover, the temperature detector 8 for detecting the outside air temperature is installed outside the electrothermal curing sheet 7 sufficiently so as not to be affected by the heat generated from the electrothermal curing sheet 7. Usually, it is often installed in the vicinity of the signal processing unit 4. These temperature detectors 8 only need to be able to detect the temperature of the place where they are installed and output an electrical signal such as a voltage according to the temperature. Can be used. Further, in addition to the concrete curing temperature and the outside air temperature, the temperature of the floor base plate is also detected, and the temperature of the floor base plate can be displayed on the display unit 2. Therefore, the temperature detector 8 constituting the temperature detector 3 is covered with the heat insulating sheet 15 in addition to the inside covered with the electrothermal curing sheet 7 and the outside sufficiently separated from the electrothermal curing sheet 7. It is also installed on the floor base plate 9 which is a part.
[0013]
An output signal a output according to the temperature detected by the temperature detection unit 3 is input to the signal processing unit 4. The signal processing unit 4 converts the output signal a output in the form of voltage or the like into a temperature display signal b for digital display on the display unit 2 and outputs the temperature display signal b to the display unit 2. The temperature display signal b is configured by a combination of instructions for turning on or off a predetermined portion of an LED of the light display unit 10 (to be described later) of the display unit 2, and according to the temperature display signal b, the light display unit 10 displays the temperature The temperature detected by the detection unit 3 is displayed. Here, the signal processing unit 4 is integrally connected to the display unit 2. However, the present invention is not limited to this. For example, the signal processing unit 4 is built in the display unit 2 or completely independent. It can also be formed.
[0014]
On the front surface of the display unit 2, two light-emitting display units 10 for digitally displaying the concrete curing temperature and the outside air temperature are arranged. The two light-emitting display units 10 are configured by arranging high-intensity LEDs so that both a minus sign and a two-digit number can be displayed. A predetermined portion of the LEDs is turned on or off according to the temperature display signal b. By doing so, temperatures from -99 to 99 ° C. can be displayed. Here, since the high-luminance LED is used for the light-emitting display unit 10, high visibility can be exhibited even when viewed from a remote place, at night, or in bad weather. The configuration of the electric display unit 10 is not limited to this. For example, as shown in FIG. 2, a three-digit number can be displayed, and a decimal point is arranged at the lower right of the center number. It is also possible to display in units of 0.1 ° C. between −99.9 and 99.9 ° C. Moreover, it may replace with the said high-intensity LED, and you may make it display a number with a liquid crystal, a light bulb, etc.
[0015]
The characters “outside temperature” and “concrete curing temperature” are arranged on the left side of the display unit 10 on the left side of the display unit 10 so as to correspond to the displayed temperatures. Next to each is the letter “℃”. By arranging these characters, it is possible to see at a glance what the numbers displayed by the light-emitting display unit 10 are. In addition, here, the letters “I am currently curing the basic concrete” are arranged on the light-emitting display unit 10, and the concrete 6 while performing temperature control for customers, residents in the vicinity, or passers-by. This makes it easy to let people know that they are doing heat curing. Moreover, in addition to the electric light display part 10 for displaying the concrete curing temperature and the outside air temperature, the electric light display part 10 for displaying the temperature of the floor base plate is arranged in the display part 2, and a total of three The light-emitting display unit 10 is arranged. A character “floor base plate temperature” is arranged on the left side of the electric display 10 for displaying the temperature of the floor base plate, and a character “° C.” is arranged on the right side.
[0016]
As shown in FIG. 1 and FIG. 3, which is a right side view of the display unit 2, two mounting rings 11 are provided on the upper surface of the display unit 2, and behind the mounting ring 11. Are provided with two U-shaped stoppers 12 so as to protrude from the back surface of the display unit 2. Both the attachment ring 11 and the U-shaped hook 12 are used for attaching the display unit 2 at a position where it is easy to see. Specifically, the rope 13 and the S-shaped bracket are attached to the attachment ring 11. Or the like, and is used by hanging the U-shaped hook 12 on the top of the fence 14 that partitions the construction site. In order to enhance the advertising effect, it is desirable to attach the display unit 2 so as to be located along a road that is easy to see from passers-by.
[0021]
The concrete curing temperature monitoring device 1 according to the second embodiment of the present invention, as shown in FIG. 5, is a temperature detection unit 3 that detects the concrete curing temperature, the outside air temperature, and the ground temperature inside the electrothermal curing sheet. A signal processing unit 4 that converts the output signal a from the temperature detection unit 3 into a temperature display signal b and outputs it to the display unit 2, and a concrete curing temperature according to the temperature display signal b from the signal processing unit 4, And a display unit 2 for displaying the outside air temperature and the temperature of the ground, and the temperature detecting unit 3 includes two pieces for detecting the temperature of each of the concrete curing temperature and the temperature of the ground at two locations. Each of the temperature detectors 8, and the signal processing unit 4 calculates an average value of the output signals a from the two temperature detectors 8 for each of the concrete curing temperature and the ground temperature. It is that outputs to the display unit 2 is converted into a signal b.
[0022]
That is, the concrete curing temperature monitoring apparatus 1 according to this embodiment, the in the first embodiment, by increasing the temperature detector 8 for detecting the respective temperatures of the temperature of the concrete curing temperature and ground one by one, respectively In addition, two temperature detectors 8 are installed for each temperature, and the signal processing unit 4 averages the output signals a from the two temperature detectors 8 for the concrete curing temperature and the ground temperature. After the value is calculated, it is converted into a temperature display signal b and output to the display unit 2. As described above, by detecting the temperature at a plurality of locations for each of the concrete curing temperature and the temperature of the ground, and displaying the average value on the display unit 2, a more accurate temperature can be displayed for each temperature. It is possible to accurately monitor the concrete curing temperature and the ground temperature.
[0023]
In the present embodiment, the outside air temperature is detected only at one place, but it may be detected at a plurality of places. For each temperature of the concrete curing temperature and the ground temperature, two places are provided. Although the temperature is detected one by one, the temperature may be detected at a plurality of positions beyond that. In the first embodiment, the concrete curing temperature and / or the outside air temperature may be detected at a plurality of locations.
[0024]
【The invention's effect】
As described above, the concrete curing temperature monitoring device according to the present invention has the following effects. That is, according to the concrete curing temperature monitoring device according to claim 1, a temperature detection unit that detects a concrete curing temperature inside the electric heat curing sheet , an outside air temperature , and a temperature of the ground covered with the heat retaining sheet ; A signal processing unit that converts an output signal from the temperature detection unit into a temperature display signal and outputs the signal, a concrete curing temperature inside the electrothermal curing sheet , an outside air temperature , and the heat retention according to the temperature display signal from the signal processing unit By providing a display unit that displays the temperature of the ground covered with the sheet, the concrete curing temperature inside the electrothermal curing sheet , the outside temperature , and the temperature of the ground covered with the heat insulation sheet can be clearly seen visually. Can be displayed. Therefore, the concrete after casting in the mold frame is covered by an electrothermal curing sheet at a cold region, in the case of heating curing of the concrete by the whole covered formwork with electric heat curing sheet covered by heat insulating sheet, electric heating The operator can easily visually monitor whether the concrete curing temperature inside the curing sheet and the temperature of the ground covered with the thermal insulation sheet are kept constant at the optimum temperature. In addition to preventing accidents and improving the safety of concrete heating and curing work, it is possible to improve the quality of concrete by monitoring to always heat and cure concrete at a constant temperature.
[0025]
Furthermore, it is possible to widely inform customers, residents, or passers-by that the concrete heat curing method is adopted, so the construction technology and high reliability can be advertised and differentiated from other companies. And customer satisfaction can be improved.
[0027]
According to the concrete curing temperature monitoring device according to claim 2 , in addition to the above-described effect, the temperature detection unit is configured to cover the concrete curing temperature inside the electrothermal curing sheet, the outside temperature, and the ground covered with the heat retaining sheet. A plurality of temperature detectors for detecting a plurality of temperatures for any part or all of each temperature of the temperature, the signal processing unit from a plurality of temperature detectors for each temperature By calculating the average value of the output signal, converting it to a temperature display signal and outputting it, it is possible to display a more accurate temperature for each of these temperatures, concrete curing temperature inside the electrothermal curing sheet, outside temperature , And the temperature of the ground covered with the heat insulation sheet can be accurately monitored.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a concrete curing temperature monitoring device according to a first embodiment of the present invention.
FIG. 2 is an explanatory diagram showing an example in which the display temperature is three digits in the concrete curing temperature monitoring device according to the first embodiment of the present invention.
FIG. 3 is a right side view of the concrete curing temperature monitoring apparatus according to the first embodiment of the present invention.
FIG. 4 is an explanatory diagram of a concrete curing temperature monitoring device according to a second embodiment of the present invention.
FIG. 5 is an explanatory diagram of a concrete curing temperature monitoring device according to a third embodiment of the present invention.
FIG. 6 is an explanatory diagram of a concrete heat curing method according to the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Concrete curing temperature monitoring apparatus 2 Display part 3 Temperature detection part 4 Signal processing part 5 Formwork 6 Concrete 7 Electric heat curing sheet 8 Temperature detector 9 Ground 10 Electric light display part 11 Ring 12 for mounting C-shaped hook 15 Thermal insulation sheet a Output signal b Temperature display signal

Claims (2)

Concrete curing temperature used when covering concrete after placement in a mold in a cold region with an electrothermal curing sheet, and heating the concrete by covering the entire mold covered with the electrothermal curing sheet with a thermal insulation sheet A monitoring device ,
A temperature detection unit for detecting the concrete curing temperature inside the electric heat curing sheet, the outside air temperature, and the temperature of the ground covered with the heat retaining sheet , and an output signal from the temperature detection unit is converted into a temperature display signal and output. A signal processing unit, and a display unit for displaying the concrete curing temperature inside the electrothermal curing sheet , the outside air temperature, and the temperature of the ground covered with the heat retaining sheet according to a temperature display signal from the signal processing unit. A concrete curing temperature monitoring device characterized by that. The temperature detection unit is configured to measure a plurality of temperatures for any one or all of a temperature of concrete curing inside the electrothermal curing sheet , an outside air temperature, and a temperature of the ground covered with the heat retaining sheet. A plurality of temperature detectors for detection, and the signal processing unit calculates an average value of output signals from the plurality of temperature detectors for each temperature, converts the average value into a temperature display signal, and outputs the temperature display signal. The concrete curing temperature monitoring device according to claim 1 .

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