JPS61257558A - Ceiling structure in indoor pool - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a ceiling structure, particularly to a ceiling structure of an indoor pool or a ceiling structure at the poolside of an indoor pool.

(b) Summary of the Invention The present invention provides a ceiling structure that includes a metal ceiling base material and a metal ceiling base material that is stretched over the lower surface of the ceiling base material.
A two-visit layer number right tenth non-submerged retaining material, a sealing material for sealing the joints of this sacrificial material, and a water-resistant binder stretched over the surface of the sacrificial material. By constructing a ceiling material made of inorganic fiberboard containing
This provides a ceiling structure with excellent heat insulation properties.

(c) Conventional technology and its problems Conventionally, unlike outdoor pools, indoor pools are often heated pools for use in all seasons, and are generally kept in an environment with a room temperature of around 30°C and a relative humidity of 90 to 95%. used. For this reason, interior materials for indoor pools must be highly water resistant.

In particular, the ceiling surface is an area that is not directly exposed to water, but is exposed to high temperature conditions for a long period of time, so it is moisture resistant (i.e., the ceiling material does not deform due to moisture, lose strength, or rot).
It is required to be excellent at.

Until now, such ceiling surfaces have been finished by installing synthetic resin or metal panels, or by applying resin mortar on the roof slab and painting it to meet the moisture resistance requirements. It was fulfilled.

However, conventional ceiling structures had poor insulation and sound absorption properties, resulting in high energy costs for maintaining room temperature and large echoes.

In addition, indoor pools often have a larger amount of chlorine added than outdoor pools for disinfection purposes, so if acid-resistant metals are used for ceiling finishing panels, the chlorine in the moisture may cause the metal panels to The problem was that it was easily corroded.

On the other hand, in view of the above-mentioned problems, by constructing an inorganic fiberboard as a ceiling material, which is made mainly from rock wool or glass wool, which has excellent heat insulation, sound absorption, and fire resistance, and is resistant to decay even if it absorbs water. It can be seen that it forms the ceiling surface.

In addition, conventional ceiling materials such as rock wool sound-absorbing boards are formed using starch as a binding agent, which exhibits excellent binding strength in small amounts, so if used in humid areas such as pools, Inorganic fiberboard with a starch binder, which is conventionally used in general construction, could not be used because starch absorbs moisture, significantly reducing its binding strength and causing mold growth.

In addition, since the ceiling material made of inorganic fiberboard is porous, it is difficult for moisture to permeate into the attic space, and dew condensation is likely to occur in the space behind the attic.Furthermore, the pool ceiling base is not waterproof or fireproof. Metal underlayments are used for this purpose, but as mentioned above, in ceiling materials where moisture easily permeates, the steel ceiling underlayment behind the ceiling tends to rust due to condensation water and chlorine contained in the moisture, resulting in corrosion. The problem was that it was easy to do.

Moreover, in order to prevent the corrosion, the attic space must be frequently ventilated to remove the moisture that has passed through, and a large amount of power is required for forced ventilation, which is a problem.

(d) Means for Solving the Problems In view of the above-mentioned problems, the ceiling structure according to the present invention includes a ceiling base material made of metal or the like, and a moisture-proof layer on at least one side stretched over the lower surface of the ceiling base material. a ceiling material made of an inorganic fiber board containing a water-resistant binder stretched over the surface of the sacrificial adhesive material; a sealing material that seals the joints of the sacrificial adhesive material; This is a ceiling structure for indoor pools, etc., which is composed of

(E) Function and Effect Therefore, according to the present invention, an inorganic board having a moisture-proof layer on at least one side is stretched as a laminate material on the lower surface of a metal ceiling base material, and this laminate material is Since the joints are sealed with a sealing material, the moisture-proof layer of the sealing material and sacrificial material prevents moisture from entering the ceiling. As a result, the ceiling base material located in the attic space is less likely to be corroded by moisture from the pool, improving the durability of the ceiling base material, and saving the power required for forced ventilation of the attic space. I can do it.

What's more, the ceiling surface is made of inorganic fiberboard that has excellent sound absorption and heat insulation properties, so it is quiet with low echoes and saves energy to maintain indoor temperature. effective.

(F) Description of Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings of FIGS. 1 and 2.

This embodiment includes a ceiling base material 1, a sacrificial adhesive material 2 stretched on the lower surface of this ceiling base material 1, a sealing material 3 for sealing the joints of this sacrificial adhesive material 2, and a sacrificial adhesive material 2. A ceiling plate 4 is stretched over the surface of the roof.

For example, as shown in FIG. 1, the ceiling base material 1 includes hanging bolts 6 made of stainless steel or the like embedded in a concrete F slab 5, an adjustment hanger 7, a substantially C-shaped channel 8, and edges 9a, 9b. Consisting of

Incidentally, if the suspension bolts 6 and the like are subjected to anti-corrosion treatment by coating with 7-talic acid resin or fluororesin in advance, the occurrence of rust and corrosion can be more effectively prevented.

The waste material 2 has a moisture-proof layer 2b formed on the lower surface of an inorganic plate 2a.

As the inorganic plate 2a, for example, a calcium silicate plate 9
Examples include gypsum board and asbestos cement board.

The moisture-proof layer 2b is formed by coating the lower surface of the inorganic plate 2a with melamine resin, epoxy resin, urethane resin, etc., or is formed by coating and impregnating it.
Alternatively, a moisture-proof sheet may be attached and integrated. It goes without saying that the moisture-proof layer 2b may be provided on the upper surface of the inorganic plate 2a or on its upper and lower surfaces. According to the latter, the moisture resistance is further improved, and the mechanical strength of the inorganic plate 2a does not decrease due to water absorption.

The sealing material 3 seals the joints of the sacrificial material 2, and includes not only caulking material (e.g., urethane resin, silicone, etc.) but also waterproof tape (e.g., vinyl chloride, PP, etc.).
or other synthetic resin tapes).

The sealing material 3 prevents moisture from permeating through the joints of the sacrificial material 2, and prevents direct exposure of the roof edge 9a of the ceiling base material to moisture containing chlorine. This prevents rust from forming.

The ceiling material 4 is made of an inorganic fiberboard made by adding a water-resistant binder to mineral fibers or the like, or by impregnating the paper with a water-resistant binder after paper-making.

The reason why a water-resistant binder is used is because moisture is blocked by the adhesive material 2 and cannot penetrate into the ceiling, and moisture tends to accumulate inside the ceiling material 4 located on the ceiling surface. This is to prevent a decrease in the strength of the target.

The water-resistant binder may be a melamine resin, a phenol resin, a modified polyvinyl alcohol with an increased degree of saponification, or a combination of the above.

In addition, when the ceiling material 4 is to be stretched on the surface of the sacrificial material 2, it is stretched using a water-resistant adhesive, a rust-free plastic nail, or a combination of these.

Test Example 1 Thickness: 12III11, external dimension: 90
Epoxy resin was applied at a rate of 350 g/m2 to the surface of an asbestos calcium silicate board measuring 9 x 1818 a+m (3 shaku x 6 shaku), while 100 g/m2 of epoxy resin was applied to the back side.
The coating was used at a ratio of 2:2. The moisture permeability resistance of this adhesive material is 123.0+++2Hr ma+Hg/g, and it is stretched on the ceiling base material at intervals of width 5III11. The moisture permeability resistance of the asbestos calcium silicate plate (thickness: 12IIl111) when no epoxy resin was applied was 0.93 m2Hr mmHg/g.

The sealing material is made of a silicone caulking agent, and is filled into the 5 cm wide joint portion of the adhesive material.

Note that the sealing material is also filled in the gap between the side wall and the end face of the adhesive material.

The ceiling material is a mineral fiber board with a thickness of 12 mm, which is made by kneading mineral fibers with 4% by weight of melamine resin added and then making a paper. This ceiling material has a moisture permeability resistance of 0,973
m2Hr mn+Hg/g, and is dot-adhered to the surface of the above-mentioned waste material with an adhesive made of epoxy resin and nailed with plastic nails. Note that the sealing material 3 is also filled between the side wall and the end surface of the ceiling material for sealing.

Therefore, the total moisture permeability resistance in this test example is 123.973 m2Hr mmHg/g, which is the sum of the moisture permeation resistance of the ceiling material, 0 and 973 m2Hr mmHg/g, to the moisture permeability resistance of the sacrificial material, 123.0 m2Hr mmHg/g. Become.

This is done under the environmental conditions of a heated pool, i.e., 30°C under the ceiling, 5°C.
0% (humidity), indoor temperature at 30°C, 95% (humidity), and the water vapor pressure difference is 14.5 mmHg.
m2. The amount of moisture permeable per hour is 0.1hr/2hr, and the entire ceiling of a 25x25m pool is 75g.
The amount of moisture permeated per hour was the amount that could be sufficiently discharged even with natural ventilation.

At this time, a considerable amount of moisture was observed to have penetrated into the interior of the ceiling material, but the mineral fiberboard did not peel or swell from the base due to moisture absorption, and the ceiling surface appeared to be in good condition. .

Comparative Example 1 In order to compare the moisture-proofing performance, a calcium silicate board (thickness 121) without a moisture-proof layer was pasted with a damp-proof material (moisture permeation resistance 0, 93 m2
Hr mmHg/g) on the ceiling base material, starch binder mineral fiber board (moisture permeability resistance 0.96a2
HrmmHg/g) was used as the ceiling material, and the ceiling structure was otherwise the same as in Test Example 1 described above. 1 m2 under the same environmental conditions as above. Moisture permeation per hour is 7,6
2 g/w+28r, and looking at the entire ceiling of a 25 x 25 m pool, the amount of moisture permeable was 4762.5 g/hour.

Comparing the above moisture permeation amounts, the moisture permeation amount of Test Example 1: the moisture permeation amount of Comparative Example 1 = 1: 63.5, and the ceiling structure of Test Example 1 according to the present invention has a moisture permeation amount of 1/60th of the moisture permeability of a ceiling structure that is simply installed without a moisture barrier layer
It turns out that you can do the following.

For this reason, it is possible to eliminate the need for forced ventilation by using only natural ventilation in the attic, and even if forced ventilation is required just in case, the number of times of ventilation can be significantly reduced, reducing power consumption. This has the advantage of reducing consumption.

Moreover, it goes without saying that rotting of the ceiling base material due to moisture can be effectively prevented.

In addition, when comparing the condition of the ceiling material, it was found that in the ceiling material of Comparative Example 1, the starch swelled due to moisture absorption, resulting in a decrease in the binding strength between fibers, and a decrease in strength and swelling of the entire ceiling material was observed. In Test Example 1, no such decrease in strength or swelling of the ceiling material was observed, and both appearance and strength were in good condition even under high humidity.

Test Example 2 The adhesive used was one in which the surface of the asbestos calcium silicate board used in Test Example 1 was coated with epoxy resin at a rate of 250 g/m2. At this time, the moisture permeability resistance of the sacrificial material was 82ee2Hr ma+Hg/g, and it was stretched on the ceiling base material at intervals of 1 inch width.

Instead of the silicone caulking agent used in Test Example 1, the sealing material was a waterproof tape made of a polypropylene sheet provided with an adhesive layer and pasted along the joints for sealing.

The ceiling material used is the same as in Test Example 1, so
The moisture permeability resistance of this ceiling material is 0.97a+'Hr smHg
/g, and was constructed in the same manner as Test Example 1.

Therefore, the total moisture permeability resistance in this test example is 82゜97m2Hr soraHg/g, which is the sum of the moisture permeability resistance of the sacrificial material, 82m2Hr llmHg/g, and the moisture permeability resistance of the ceiling material, 0 and 97m2Hr rmvaHg/g. .

Next, the environmental conditions are 30°C and 50% (humidity) in the ceiling and 30°C and 95% (humidity) indoors, and the water vapor pressure difference is 14°51H.
25 meters x 25 m (=625 m2) when g
The amount of moisture permeation per 24 hours of the ceiling surface made of was calculated from the total moisture permeation resistance (82,97 m2Hr veHg/g) to be 2,621 kg.

, Comparative Example 2 This Comparative Example is a case in which a joint with a width of 1 mm was sealed with a silicone caulking agent in Test Example 2, whereas this joint was not sealed. 2
It is similar to

The width of the pasting material (909 x 1818 mm) is IImfi.
If it is stretched at + intervals, the area of the joint will be 25e + x 25
It becomes 1112 at the ceiling surface of m (=625 lines 2).

The amount of moisture permeation in Comparative Example 2 is 24 hours per hour for the entire ceiling, and under the same conditions as Test Example 2, the amount of moisture permeation is 2.
．． 975 kg, and although the difference is small, approximately 350 g/24 hours of moisture is concentrated in the joint area and permeates,
Condensation was observed on the surface of the field edge near the joint.

Comparative Example 3 In this comparative example, only the ceiling material used in Test Example 2 is applied to the ceiling base material to form a ceiling surface.

The moisture permeability resistance of the ceiling material is 0,97 m2Hr mmHg/
25m x 2 under the same conditions as Test Example 2
Calculating the amount of moisture permeation per 24 hours on the ceiling surface of 5 mats (=625 m2), it was 218.75 kg, and it was impossible to prevent the occurrence of dew condensation in the ceiling without forced ventilation.

Therefore, Test Example 2. Comparative example 2. The moisture permeability of Comparative Example 3 was 2.621 kg, 2.975 kg, and 218°75 kg.
becomes.

Comparative Example 3 requires forced ventilation about three times a day for dehumidification; It was found that ventilation was sufficient and the energy costs for dehumidification were significantly reduced.

In addition, when the joints were not sealed with the sealant of Comparative Example 2, a lot of condensation water was observed on the surface of the field edge on the back side of the joint, whereas in Test Examples 1 and 2, the surface of the field edge was No dew condensation was observed on the surface, and it was confirmed that the base material had a high rust prevention effect.

In addition, the performance of the moisture-proof layer in the present invention is determined by determining the moisture permeability resistance value according to the material and thickness of the inorganic board used as a sacrificial material.
A device formed to have a resistance value of 0+n2HrmmHg/g or more is desirable because it allows forced ventilation to be carried out with less than 1/25 of the conventional capacity and prevents dew condensation in the attic space.

As described above, according to the ceiling structure of the present invention, a ceiling surface with excellent moisture resistance can be formed without reducing the strength of the ceiling material even in a humid environment such as a heated swimming pool. Except basement.

Needless to say, it can also be used in warehouses and other areas that are prone to high humidity.

[Brief explanation of the drawing]

1 and 2 are partial cross-sectional and perspective views of one embodiment of the present invention. 1...Ceiling base material, 2...Saving material, 2a...
・Inorganic board, 2b... Moisture-proof layer, 3... Sealing material, 4... Ceiling material.

Claims (1)

[Claims] (1) A ceiling base material made of metal, etc., a sacrificial material made of an inorganic board with a moisture-proof layer on at least one side stretched over the underside of the ceiling base material, and a seal that seals the joints of this sacrificial material. A ceiling structure for an indoor swimming pool or the like, characterized in that the ceiling material is made of an inorganic fiberboard containing a water-resistant binder and is stretched on the surface of the sacrificial material.