JP2006249738A - Concrete structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a concrete structure which has sufficient strength and high snow melting efficiency imparted thereto, and is excellent in practicality. <P>SOLUTION: The concrete structure for melting snow is provided with a heater 1, and embedded in or laid on the ground under service conditions. The concrete structure is formed by laminating a heat radiation concrete layer 2 in which the heater 1 is arranged, and a heat insulation concrete layer 3 which is arranged under the heat radiation concrete layer 2, for inhibiting heat radiation downward from the heat radiation concrete layer 2, on each other in one body. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a concrete structure.

  Conventionally, a snow melting concrete panel has been proposed in which a heater such as a heating wire is embedded or laid on a road surface.

  Since this concrete panel is to be buried or laid on the road surface, it must naturally have sufficient strength, and must be formed to be thick to some extent for strength development.

  However, when the concrete panel becomes thicker, the ratio of the buried volume increases as compared with the surface area (snow melting area), and the amount of heat radiation to the ground increases accordingly, and the snow melting efficiency deteriorates.

  For example, as a configuration for reducing the amount of heat radiation to the ground, there is a configuration in which a heat insulating material made of a foam material is provided below the panel as disclosed in Patent Document 1, but to the extent that the weight of a vehicle or the like can be supported It is not a structure that can exhibit sufficient strength, and lacks practicality.

  In addition, since different materials such as concrete and foamed material are laminated together, it is difficult to say that their bonding strength is sufficient, and in this respect too much strength cannot be denied.

  Furthermore, in the configuration in which the heat insulating material is simply provided below the concrete panel, heat radiation to the lower side of the concrete panel can be reduced, but the heat radiation amount from the outer peripheral surface of the panel cannot be reduced.

JP-A-6-264408

  The present invention solves the above-mentioned problems, and by forming a heat-dissipating concrete layer provided with a heater and a heat-insulating concrete layer that prevents wasteful heat dissipation from the heat-dissipating concrete layer into the ground, a good snow melting is achieved. In addition, both layers are concrete layers, so they are firmly bonded, and furthermore, heat dissipation from the outer peripheral surface can be reduced by forming a thin heat dissipating concrete layer with a heater, etc., so that it has sufficient strength and high snow melting efficiency. A concrete structure excellent in practicality is provided.

  The gist of the present invention will be described with reference to the accompanying drawings.

  A concrete structure capable of melting snow, embedded or laid on the ground and provided with a heater 1, a heat dissipating concrete layer 2 provided with the heater 1, and the heat dissipating concrete layer disposed below the heat dissipating concrete layer 2. 2 is a concrete structure characterized in that it is formed by laminating and integrating a heat insulating concrete layer 3 that prevents heat radiation from 2 downward.

  The concrete structure according to claim 1, wherein the boundary surface between the heat-dissipating concrete layer 2 and the heat-insulating concrete layer 3 is set to a non-flat uneven surface.

  The concrete structure according to any one of claims 1 and 2, wherein the heat insulating concrete layer 3 is mixed with a filler that lowers the thermal conductivity of the concrete. Is.

  Further, in the concrete structure according to claim 3, a low thermal conductivity material is employed as a filler for lowering the thermal conductivity of the concrete.

  The concrete structure according to claim 4 is a concrete structure characterized in that waste materials such as used EPS are adopted as the low thermal conductivity material.

  Moreover, the concrete structure of any one of Claims 1-5 WHEREIN: The pattern for slipping is provided in the surface of the thermal radiation concrete layer 2, It concerns on the concrete structure characterized by the above-mentioned.

  Further, in the concrete structure according to any one of claims 1 to 6, the heat dissipation concrete layer 2 is embedded with a heat equalizing body that uniformly disperses the heat of the heater 1 on the surface of the heat dissipation concrete layer 2. The present invention relates to a concrete structure characterized by

  The concrete structure according to any one of claims 1 to 7, wherein a self-control type heater 1 is employed as the heater 1 according to the concrete structure.

  Since this invention was comprised as mentioned above, it becomes a concrete structure excellent in practicality which can aim at the improvement of snow melting efficiency, ensuring sufficient intensity | strength.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  Snow melting is performed on the surface of the heat-dissipating concrete layer 2 by the heater 1 of the heat-dissipating concrete layer 2.

  At this time, the heat-insulating concrete layer 3 prevents heat radiation downward from the heat-dissipating concrete layer 2, and more heat is dissipated on the surface of the heat-dissipating concrete layer 2.

  Moreover, if the heat-dissipating concrete layer 2 is made thin, the outer peripheral area of the heat-dissipating concrete layer 2 can be reduced, and the amount of heat released from the outer peripheral surface can be reduced accordingly.

  Furthermore, since the coupling | bonding of both the thermal radiation concrete layer 2 and the heat insulation concrete layer 3 becomes strong, the intensity | strength which can be fully used can be implement | achieved.

  Therefore, according to the present invention, useless heat dissipation can be suppressed and snow melting can be efficiently performed, and sufficient strength can be secured by the laminated structure of the heat dissipation concrete layer 2 and the heat insulating concrete layer 3.

  Specific embodiments of the present invention will be described with reference to the drawings.

  The present embodiment is a concrete structure embedded or laid on the ground and provided with a heater 1, which is a heat dissipating concrete layer 2 provided with the heater 1, and disposed below the heat dissipating concrete layer 2. It is a concrete panel for melting snow formed by laminating and integrating a heat insulating concrete layer 3 that prevents heat radiation downward from the concrete layer 2.

  Each part will be specifically described.

  As the heater 1, a self-control type heater 1 is employed. Specifically, an electric heater 1 that automatically controls the output according to the ambient temperature is employed. The electric heater 1 uses a PTCR (Positive Temperature Coefficient Resistance) ceramic chip as a heating element. As shown in FIG. 1, both end portions of the heater 1 are led out of the snow melting concrete panel and connected to a power supply unit (not shown) for supplying power.

  In the present embodiment, the self-control type electric heater 1 is adopted as the heater 1, but the electric heater 1 having another configuration may be adopted, and hot water is supplied to the water pipe instead of the electric heater. Other configurations such as a configuration to be used may be adopted.

  Different fillers are mixed in the heat dissipating concrete layer 2 and the heat insulating concrete layer 3.

  General gravel is mixed in the heat-dissipating concrete layer 2 in which the heater 1 is embedded in a meandering state. Moreover, the surface of the heat-dissipating concrete layer 2 is provided with an anti-slip pattern.

  In the heat radiating concrete layer 2, a heat equalizing body (not shown) is embedded to uniformly dissipate heat from the heater 1 on the surface of the heat radiating concrete layer 2. Specifically, in the present embodiment, a wire mesh that is uniformly disposed immediately above the heater 1 is employed as a heat equalizing body.

  Therefore, the heat radiation from the heater 1 is distributed substantially uniformly on the surface of the heat-dissipating concrete layer 2 by this wire mesh, and heat can be dissipated uniformly and efficiently from the surface of the heat-dissipating concrete layer 2.

  In the present embodiment, a wire mesh is used as the soaking body, but other configurations such as a configuration in which a high thermal conductivity material is mixed into the surface side of the heat-dissipating concrete layer 2 may be employed.

  Further, in this embodiment, gravel is mixed in the heat dissipating concrete layer 2 in order to obtain good heat dissipation, but, for example, a resin with low thermal conductivity that can be expected to store heat may be mixed, Gravel and the resin having low thermal conductivity may be mixed in an appropriate ratio.

  Specifically, even when used EPS (Expanded Poly-Styrene) is adopted as a resin having a low thermal conductivity and the used EPS and gravel are mixed at a ratio of 7: 3, only the above gravel is used. It has been confirmed that snow melting efficiency equivalent to or better than concrete mixed with can be demonstrated. This is presumably because the heat storage effect is exhibited by the resin having low thermal conductivity as described above, and the heat melting efficiency is improved little by little without being radiated at a stretch. In addition, if EPS is mixed more than said mixing rate, snow melting efficiency will deteriorate, and if less than said mixing rate, the difference with the case of only gravel will become small.

  The heat insulating concrete layer 3 is mixed with a filler that lowers the thermal conductivity of the concrete. Specifically, a low thermal conductivity material is employed as a filler that lowers the thermal conductivity of the concrete.

  In the present embodiment, used EPS similar to the above is mixed as the low thermal conductivity material. Therefore, because of the presence of this used EPS, the thermal conductivity of the heat insulating concrete 3 is lowered, and it is possible to prevent downward heat dissipation from the heat-dissipating concrete layer 2, as well as adopting used EPS as waste material, This saves the time and effort of disposing of the waste material, and also improves the quality of the environment.

  In the present embodiment, the used EPS is mixed in the heat insulating concrete layer 3, but other materials, for example, other waste materials such as waste glass (less expensive than EPS but snow melting efficiency is not good), and heat radiation concrete. A material or the like that can reduce the thermal conductivity of the heat-insulating concrete layer 3 as much as possible may be adopted so that heat radiation downward from the layer 2 can be reliably prevented. In addition, used EPS includes those obtained by simply pulverizing EPS, those processed at low temperature, and those processed by high-temperature steam, but any one may be used.

  Moreover, the boundary surface of the thermal radiation concrete layer 2 and the heat insulation concrete layer 3 of a present Example is set to the uneven surface which is not flat.

  Below, based on the manufacturing process of a present Example, the boundary surface of the said heat dissipation concrete layer 2 and the heat insulation concrete layer 3 is demonstrated concretely.

  As shown in FIG. 2, a metal mesh as a heat equalizing body is disposed at the lowermost part of the mold 4 and is fixed to the reinforcing bar 5 and the reinforcing bar 5 in a meandering state at a predetermined interval on the metal mesh. The heater 1 is disposed, and the lower half of the mold 4 is filled with the ready-mixed concrete A mixed with gravel as the heat-dissipating concrete layer 2 (see FIG. 3). In addition, the code | symbol 6 is a spacer for arrange | positioning a reinforcing bar and the heater 1 in the appropriate position in the heat-dissipating concrete layer 2, and 7 is a work bench.

  The upper surface of the heat dissipating concrete layer 2 formed on the lower half of the mold 4 is lightened (see FIG. 4), and the heat insulating concrete layer 3 is used on the upper half of the mold 4 before the heat dissipating concrete layer 2 is solidified. The raw concrete B mixed with the finished EPS is filled (see FIG. 5).

  In this example, the upper surface of the heat-dissipating concrete layer 2 is not subjected to uneven processing in a separate process, but uses a simple seam. However, the uneven surface is applied in a separate process for more reliable uneven engagement. May be.

  As a result, the upper surface of the heat-dissipating concrete layer 2 and the lower surface of the heat-insulating concrete layer 3 that are not yet solidified are partially mixed and the uneven surfaces are hardened in an engagement and close contact state. Thus, the boundary portion between the heat-dissipating concrete layer 2 and the heat insulating concrete layer 3 is firmly bonded, and the structure is excellent in strength.

  After the heat-dissipating concrete layer 2 and the heat-insulating concrete layer 3 are solidified (see FIG. 6), the heat-dissipating concrete layer 2 and the heat-insulating concrete layer 3 are laminated and integrated by removing them from the mold and turning upside down. As shown in the drawing, a transportable snow melting concrete panel can be obtained.

  In addition, although the present Example demonstrated the snow-melting concrete panel which can be conveyed as mentioned above, the above-mentioned concrete structure can be implement | achieved even when it directly places on the site in the process substantially the same as the above.

  Since the present embodiment is configured as described above, when the snow 1 is melted on the surface of the heat dissipating concrete layer 2 by the heater 1 of the heat dissipating concrete layer 2, the heat insulating concrete layer 3 prevents the heat dissipating downward from the heat dissipating concrete layer 2. Accordingly, more heat is radiated on the surface of the heat radiating concrete layer 2.

  In addition, the heat dissipating concrete layer 2 provided with the heater 1 can be made thinner than a snow-melting concrete panel having a single layer structure, so that the outer peripheral area of the heat dissipating concrete layer 2 can be reduced and the heat radiation from the outer peripheral surface can be reduced accordingly. it can. Even if the heat-dissipating concrete layer 2 is made as thin as possible, the heat-insulating concrete layer 3 can be made thick enough to supplement the strength.

  Furthermore, since the heat-dissipating concrete layer 2 and the heat insulating concrete layer 3 are concrete, each has high strength and the connection between the two becomes strong, so that strength sufficient to withstand use can be realized.

  Moreover, since used EPS is adopted as a filler mixed in the heat insulating concrete layer 3, the heat insulating concrete layer 3 can exhibit good heat insulating property, and of course, the disposal work can be saved by using waste materials. Can contribute to environmental problems.

  Therefore, in this embodiment, it is possible to effectively melt snow by suppressing wasteful heat dissipation, and to secure sufficient strength by the laminated structure of the heat-dissipating concrete layer 2 and the heat insulating concrete layer 3.

It is a schematic explanatory perspective view of a present Example. It is a schematic explanatory perspective view explaining the manufacturing process of a present Example. It is a schematic explanatory perspective view explaining the manufacturing process of a present Example. It is a schematic explanatory perspective view explaining the manufacturing process of a present Example. It is a schematic explanatory perspective view explaining the manufacturing process of a present Example. It is a schematic explanatory perspective view explaining the manufacturing process of a present Example.

Explanation of symbols

1 Heater 2 Heat dissipation concrete layer 3 Thermal insulation concrete layer

Claims (8)

  A concrete structure capable of melting snow, embedded or laid on the ground and provided with a heater, and a heat dissipating concrete layer provided with the heater, and disposed below the heat dissipating concrete layer and downward from the heat dissipating concrete layer A concrete structure characterized by being formed by laminating and integrating a heat insulating concrete layer that prevents heat dissipation.   The concrete structure according to claim 1, wherein a boundary surface between the heat-dissipating concrete layer and the heat-insulating concrete layer is set to an uneven surface.   The concrete structure according to any one of claims 1 and 2, wherein a filler that lowers the thermal conductivity of the concrete is mixed in the heat insulating concrete layer.   4. The concrete structure according to claim 3, wherein a low thermal conductivity material is used as a filler for reducing the thermal conductivity of the concrete.   5. A concrete structure according to claim 4, wherein a waste material such as used EPS is adopted as the low thermal conductivity material.   The concrete structure according to any one of claims 1 to 5, wherein an anti-slip pattern is provided on the surface of the heat-dissipating concrete layer.   The concrete structure according to any one of claims 1 to 6, wherein the heat dissipating concrete layer is embedded with a heat equalizing body that uniformly disperses the heat of the heater on the surface of the heat dissipating concrete layer. Concrete structures. The concrete structure according to any one of claims 1 to 7, wherein a self-control heater is employed as the heater.

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