JPH11350615A - Heat-insulating and water-proofing construction method for heat storage tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent unreasonable load due to a thermal expansion difference during charging an accumulator and maintain heat insulating and water-proofing performance by mounting a heat insulating member on the inner wall of a structure body via a buffet material with a mechanical fixing means and spraying very quickly hardening water-proof material onto the surface of the buffer material to form a water-proof layer. SOLUTION: A plate heat insulating member 2 (e.g. foamed styrene or foamed urethane) is fixed in a lateral array to the inner wall of a reinforced concrete structure body 1 constituting a boxed heat storage tank with a mechanical fixing means 3 such as a fixing anchor or a fixing pin. On the surface of the plate heat insulating member 2, a buffer material 4 fixed thereto at the same time is superposed with the mechanical fixing means 3. For the buffer material 4, a unit of chemical fiber, glass fiber, non-woven cloth formed thereof, woven cloth or cloth or a combination of these, a film or sheet laminated thereon, or a rubber sheet or a synthetic resin sheet is used. Very quick hardening water- proof material is sprayed thereonto to form a water-proof layer 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a heat storage tank by, for example, reinforced concrete construction.

[0002]

2. Description of the Related Art In general, plate-like heat insulating members are first mounted on an inner wall of such a concrete structure in parallel, thereby ensuring heat insulating properties, and further, a rubber sheet is provided thereon. A sheet-like waterproof material such as or asphalt is applied to form a waterproof layer.

[0003]

However, if there is unevenness on the construction surface (base) of the inner wall, or if there is a difference between the plate-like heat insulating members constructed first, the sheet-like construction to be constructed on top of this will be described. The wrinkle is generated in the waterproofing material at the time of construction, or the floating material is partially floated, which causes a problem such as breakage.

In addition, since a sheet-like waterproof material is used,
There is always a sheet joint that connects the waterproof materials, and if the construction of this part is insufficient, there is a risk of damage due to internal pressure at this part, and especially, the sheet joint overlaps with uneven parts In this case, the construction is difficult, and the working efficiency is significantly reduced. Therefore, a construction method has been proposed in which a plate-like heat insulating member is mounted on the inner surface of a concrete structure in advance, and a waterproof layer made of a super-fast curing waterproof material is formed on this surface.

On the other hand, when the heat insulating member is mounted, mechanical fixing means such as a tucker, a fixing anchor, and a fixing pin are used. With such fixing means for the heat insulating member, cold water, hot water, ice When a heat storage element such as a heat storage element is inserted, there is a movement due to thermal expansion or contraction between the waterproof layer, the plate-shaped heat insulating member, and the concrete frame. There is a possibility that inconvenience may occur on waterproofness, such as cracks occurring in the water.

[0006] The present invention has been made based on the above circumstances, and an object thereof is to load a heat storage body,
Insulation and waterproofing such as a heat storage tank that can reliably maintain thermal insulation and waterproofness with sufficient durability by preventing excessive load from being applied to the fixing means due to movement inside the structure due to the difference in thermal expansion To provide construction methods.

[0007]

Therefore, in the present invention,
A plate-shaped heat insulating member is attached to the inner wall surface of the structural body by a mechanical fixing means via a cushioning material arranged thereon, and a super-fast curing waterproof material is sprayed on the surface of the cushioning material to form a waterproof layer. It is characterized by the following.

[0008] Therefore, even if there is unevenness due to misalignment on the heat insulating material side due to the presence of the cushioning material, the waterproofing process
The cushioning material can absorb and eliminate the step, and the waterproof layer can be completely adhered evenly without wrinkles and floating portions as in the case of the sheet-like waterproof material because the construction form is sprayed. Moreover, although the cushioning material and the heat insulating material are fixed to the structure body by the mechanical fixing means, the cushioning material buffers the movement inside the structure due to the difference in thermal expansion, reduces the stress concentration, and increases the strength from that point. Waterproof destruction such as cracks can be avoided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) An embodiment of the present invention will be specifically described below with reference to FIGS. Here, in order to form a box-shaped heat storage tank, a structural body made of reinforced concrete is constructed. On the inner wall surface of the structural body 1, for example, the outer diameter dimension (length, width, thickness) is (90). ~ 250) cm × 90cm × (0.5 ~ 7.5)
cm plate-shaped heat insulating member 2 (for example, foamed styrene or urethane foam material) is arranged side by side,
It is fixed by mechanical fixing means 3 such as fixing pins. At this time, a buffer material 4 that is simultaneously fixed by the mechanical fixing means 3 is superimposed on the surface of the plate-shaped heat insulating member 2. The cushioning material 4 may be a chemical fiber, a glass fiber, a nonwoven fabric, a woven fabric, a cloth, or the like using the same, or a composite thereof, a laminate of a film or a sheet thereof, a rubber sheet, a synthetic sheet, or the like. A resin sheet is used.

The order in which the plate-shaped heat insulating member 2 and the cushioning material 4 are attached to the inner surface of the structural body is, for example, temporarily fixed to the plate heat-insulating member 2 by pinning or an adhesive, and the cushioning material from above. For example, in the case of superimposition of 4 and fixing by the mechanical fixing means 3 or in the case where the cushioning material 4 is overlapped on the plate-shaped heat insulating member 2 in advance and bonded and fixed by the mechanical fixing means 3, In consideration of efficiency, it can be appropriately selected and adopted.

After such treatment, an ultra-fast curing waterproof material (for example, a base material: isocyanate NCO%: 1.
0-45.0% and curing agent: polyol or polyamine: an ultra-fast-curing urethane resin having a molecular weight of 300-6000, which is a two-component mixture, is uniformly applied by a spraying means such as a two-component mixing type spray to form a waterproof layer 5. Is formed.

In such a configuration, the function of the cushioning material 4 allows
Even if the plate-like heat insulating member 2 has irregularities, the step due to the difference in the heat insulating material can be absorbed and removed, and the surface can be smoothed, thereby facilitating the subsequent formation of the waterproof layer. In addition, since the waterproof layer 5 is sprayed, the waterproof layer 5 does not have wrinkles or floating portions as in the case of the conventional sheet-like waterproof material, and can be completely and evenly adhered to each other. There is no danger of being damaged from the location and causing water leakage.

Further, the mechanical fixing means 3 allows the cushioning material 4
And the plate-shaped heat insulating member 2 is fixed to the structure body, but the cushioning material 4 buffers the movement inside the structure due to the difference in thermal expansion, reduces stress concentration, and, in terms of strength, waterproof breakage such as cracks from the location. Can be avoided.

(Second Embodiment) In the embodiment shown in FIGS. 3 and 4, on the surface of the inner wall 1 of a structural body such as a heat storage tank, first, if necessary, as a preliminary preparation, to remove irregularities. After ironing the resin mortar 6 to obtain a smooth surface,
An adhesive (for example, urethane resin or epoxy resin) is applied, and after drying, a plate-shaped heat insulating member 2 ′ (for example, foamed styrene or urethane foam material) of an appropriate material is attached,
Form a heat insulating layer. For this reason, the difference between the plate-shaped heat insulating members 2 'can be substantially eliminated, and a smooth surface can be obtained. Then, the cushioning material 4 ′ is placed thereon, and the mechanical fixing means 3 ′
Then, these are fixed to the inner wall of the structural body.
Thereafter, an ultra-fast curing waterproof material (ultra-fast curing urethane resin as described above) is sprayed to form a waterproof layer 5 '.

In such a configuration, as in the case of the first embodiment, the waterproof layer 5 'is formed by spraying, so that the waterproof layer 5' is wrinkled or lifted as in the case of the conventional sheet-like waterproof material. There is no such point, and it is possible to evenly and completely adhere to each other, and there is no danger of breakage from an inconvenient point and water leakage as in the related art.

Although the cushioning member 4 'and the plate-shaped heat insulating member 2' are fixed to the structural body by the mechanical fixing means 3 ', the cushioning member 4' buffers the movement inside the structure due to the difference in thermal expansion. Stress concentration can be reduced, and waterproof breakage such as cracks can be avoided in terms of strength.

[0017]

According to the present invention, as described in detail above, a plate-shaped heat insulating member is attached to the inner wall surface of a structural body by a mechanical fixing means via a cushioning material arranged thereon, and Spray a super-fast curing waterproof material on the surface of the material to form a waterproof layer. Therefore, even if there is unevenness due to misalignment on the side of the heat insulating material due to the presence of the cushioning material, the cushioning material can absorb and eliminate the step in the waterproofing process, and the waterproof layer is
Since the construction form is spraying, there is no wrinkle or floating portion as in the case of a sheet-like waterproof material, and it can be evenly and completely adhered. In addition, although the cushioning material and the heat insulating material are fixed to the structure body by the mechanical fixing means, the thermal stress concentration resulting from the difference in thermal expansion inside the structure can be buffered, and the waterproof and heat insulating properties are ensured. A heat storage tank structure with excellent durability can be realized.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view of a final state.

FIG. 3 is a perspective view showing a second embodiment of the present invention.

FIG. 4 is a perspective view of the final state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inner wall 2, 2 'Plate-shaped heat insulating member 3, 3' Mechanical fixing means 4, 4 'Buffer material 5, 5' Super fast waterproof material (waterproof layer) 6 Resin mortar

Claims (4)

[Claims] 1. A plate-shaped heat insulating member is attached to an inner wall surface of a structural body by a mechanical fixing means via a cushioning material disposed thereon, and a super-fast curing waterproof material is sprayed on a surface of the cushioning material. A heat-insulating and waterproofing construction method for a heat storage tank or the like, characterized by forming a waterproof layer. 2. The method according to claim 1, wherein the ultra-fast curing waterproof material is one of an ultra-fast curing urethane resin and an ultra-fast curing urea resin. 3. The method of claim 1, wherein the mechanical fixing means includes a tucker, a fixing anchor, a fixing pin, and the like. 4. The cushioning material includes a chemical fiber, a glass fiber, a nonwoven fabric, a woven fabric, a cloth, and the like using the same,
Alternatively, a heat-insulating waterproof construction such as a heat storage tank according to any one of claims 1 to 3, wherein a composite of these materials, a film or sheet laminated thereon, a rubber sheet, or a synthetic resin sheet is used. Law.