JPS6073933A - Structure of heat insulating moisture-proof ceiling or side wall and its construction - 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 The present invention relates to a heat-insulating and moisture-proof ceiling or TNTL wall structure made of a composite of concrete and synthetic resin foam, and a construction method thereof. To be more specific, for example, when constructing a building, a heat storage chamber is often installed on the basement floor for building air conditioning, but there is a heat storage chamber on the inside surface of this heat storage chamber to prevent the dissipation of heat and moisture. Heat insulation and moisture proof properties are required. The present invention relates to a wall structure that is effective for indoor surfaces, particularly ceiling surfaces, of concrete buildings that require heat insulation and moisture resistance as described above.

The present invention will be explained below in comparison with the prior art, taking as an example a concrete building with an insulated ceiling surface that uses @foam synthetic resin board as a heat insulator.As shown in Figure 1, the general construction procedure is as follows. Formworks 2 and 2' for concrete pouring are supported by support rods 3, etc., and at this time, the lower formwork 2
A plurality of heat insulating materials are laid adjacent to each other above the iFr heat shield (that is, it will become the ceiling surface after construction), and then reinforcing bars (not shown) are placed in an appropriate space from the iFr heat shield. With the above preparations completed, concrete is poured into the formwork space (A in Figure 1), and the air bubbles of about 0.1-2 m/cm on the upper surface of the insulation layer are inserted into the concrete using an anchor ring. (shown as 5' in Figure 2 below), and integrate the heat insulating storehouse X with concrete to form a heat insulating ceiling surface.

In this conventional construction method, the insulation material is simply laid on the lower formwork 2', and after the concrete is fully illuminated and cured, the formwork is removed and the insulation material is laid over the entire ceiling surface, which is the surface of the insulation material. Waterproof mortar 6f: It was usually painted as shown in Figure 2. The disadvantages of this conventional method are 1. The waterproof mortar, especially the joints of the insulation 71:X, are prone to cracking, and water vapor enters from those parts, causing moisture to accumulate inside the insulation, reducing its insulation properties. .

2. Applying waterproof mortar to the ceiling surface is difficult, takes many man-hours, and is expensive to install.Furthermore, the mortar requires curing for more than two weeks to harden, which takes a long time.

3. Once a crack appears in the waterproof mortar, the cracks will continue to grow around it and there is a risk that the mortar will peel off and fall.

4. It is difficult to apply decorative properties as a ceiling material.

etc., especially the joints of insulation boards as described in item 1,
In other words, there were problems with the joints, and the results were not satisfactory.

The present invention solves the drawbacks of the prior art, and for convenience of explanation, the 4th aspect of the present invention is based on the construction example described above. To explain jts, as the heat insulation Xλ laid on the upper surface of the concrete form 2', a moisture-proof film covers the entire surface of one side of the foamed synthetic resin board, and forms an ear that slightly protrudes outward from the side edge. In this way, the film was attached to a foam synthetic resin board, and when it was installed, at the joints (joints) between the boards,
As shown in FIG. 3a, the selvage T' of the moisture-proof film I is bent inward from the tail to form a joint structure in which it is inserted into the side surface of the adjacent board. In this case, the length of the ear I' is
The longer the better. For example, the thickness of the insulation board 1 or its 1
/It is preferable that there be a second place.

Alternatively, as shown in Figure 3, a spacer s (#$1f) thinner than the board is placed between the side surfaces of the board.
It is preferable to use a material of the same quality as the one above).Below spacer 8, leave an appropriate joint space (this space will be filled with sealant later), and remove the formwork. Afterwards, the moisture-proof film tab 7' is bent and the space is filled with sealing 1'. In this case, the length of the ear portion 1' may be shorter than in the case of FIG. 3a.

Next, as shown in FIG. With the surface of 1' facing the concrete side, the stepped portions butt against each other without any gaps at the boundary with the adjacent board, and fold the film selvedge 7' inward of the joint gap formed on the other side of the butt, and apply sealant 9. It can also be filled with.

If you fill this J with the sealant with the edge of the moisture-proof film folded from the edge of the insulation board into a dented state, a sufficient pseudo-layer surface will be ensured between the edge of the moisture-proof film and the tooling material, so there will be no contact. Since the moisture-proof film and the sealant can be integrated together to form a complete moisture-proof film, it is possible to obtain moisture-proof properties that are far superior to the method of simply overlapping the protruding edges of the moisture-proof film. It will be done.

However, at general construction sites, the accuracy of installing concrete formwork is poor, and the formwork surface is often uneven. If a flat insulation board is laid on such a formwork surface, the insulation board surface will not be finished flat and will be uneven, and furthermore, when many craftsmen walk while placing reinforcing bars, the insulation board may break or break. When the concrete is placed out of position, the joints of the insulation boards are not aligned, and the cement composition passes through the joints, goes to the underside of the insulation boards, and hardens, causing the finish of the bottom surface (i.e. the ceiling surface) of the insulation boards to deteriorate. It often gets significantly worse. In such a case, as shown in Figure 3d, the spacer
After the board is laid through the spacer 8, a nail 11 with a disk-shaped paper, metal or plastic washer 10 is passed through the spacer 8 from above the spacer part, and the concrete lower mold is placed below the insulation board. By fixing the insulation board 1 to the frame 2' and firmly fixing it to the lower formwork 2', the I@thermal board will not move even if a worker walks on the top surface during reinforcing reinforcement work, and the insulation board 1 will not move around the joint. It can also prevent leakage of the cement composition from.

When the stirring frame is removed after concrete is poured, the joints on the bottom of the insulation board are neatly aligned and there is no concrete sticking out, resulting in a beautiful finish. However, when the formwork is removed, the nails protrude downward from the insulation board (Fig. 3 d).
), cut or bend the remaining leg of the nail shorter,
While folding the moisture-proof film edge 7', apply the sealant 9.
(Figure 3a/).

It is convenient because the legs of the nails protruding downward from the insulation board can be struck with a hammer or the like, bent into the gap joints, and pushed into the joints, thereby saving the trouble of cutting them.

Further, when removing the formwork after concrete pouring, if the formwork is handled roughly, the washers 11 will be strongly pulled downward.

At this time, since the washer is located between the insulation board and the concrete, the ends of the insulation board are often pulled at the same time and may peel off from the concrete surface. Another reason for this is that the washer 10 is not sufficiently attached to the concrete surface. Therefore, as shown in Figure 3 d and d', the washer 10 is used to improve adhesion to the concrete. It is desirable to divide the upper surface by providing a protrusion 10' projecting inward from the concrete.

If the projections 10' are provided on the top surface in this way, the projections 10' will dig deep into the concrete when concrete is poured, so even if you handle it roughly when removing the formwork after the concrete has hardened, the insulation board will not receive any tensile force. Since it does not work, the problem of peeling can be solved.

The dimensions of the ears of the moisture-proof film protruding from the side edges of the insulation board and the dimensions of the gap joints in the part to be filled with sealant are determined by the thickness of the insulation board used, the type and thickness of the moisture-proof film, and Appropriate pressure can be selected depending on the type of sealant, etc., but for example, the size of the moisture-proof film's selvage should be 3° to 40°, and the depth of the gap joint should be 3° to 40°.
Ideally, the questions should be around 60, with a width of 3 to 50 questions. If the size of the ear part and the depth and width of the gap joint part are less than 3 parts, it is not desirable because sufficient moisture-proofing treatment cannot be achieved. When the depth of the gap joint is increased, it is desirable to insert a back-up material 12 (for example, a polyethylene foam round rod) before filling the sealant.

($3 Figure e) The placement of the nail 11 through the washer is as shown in Figure 4 a and b.
It is preferable to set the position at the three-pronged point (A point) or the four-pronged point (exit point) on the edge of the insulation board laid as shown in FIG.

As described above, the present invention provides a concrete ceiling or side wall structure in which the inside is insulated using foam synthetic resin insulation.
It includes several configurations in which the joints between the insulation parts 1 are improved.

The four indoor surfaces of the present invention having the joint structure described above are as follows: 1. The performance of the insulation l1 is not degraded because the moisture-proofing treatment is complete not only at the joints but also over the entire surface of the insulation l1.

2. After pouring concrete, the lower formwork can be removed and, if necessary, the sealing material λλ can be filled to finish the concrete, so workability is significantly improved, the construction period is shortened, and construction costs can be significantly reduced.

3. By applying cosmetic processing such as colored printing to the moisture-proof film, it is possible to easily obtain a product with excellent cosmetic properties.

As the foamed synthetic resin board used in the present invention, a foamed molded product made of one or more synthetic resin materials such as polystyrene, rigid polyurethane, vinyl chloride, polyethylene, and polypropylene is effective, and a moisture-proof film Preferably, the film is a synthetic resin film such as polyethylene, polyethylene, polypropylene, vinyl chloride, vinylidene chloride, polystyrene, or ethylene-acetate-picopolymer, which has been subjected to a drop-free treatment to impart a drop-free fc property.

The sealing material used in the present invention is, for example, an oil-based caulking material (JIS A3751).

Polysulfide sealant (, r r 5A57
54) In addition, polyurethane-based, butyl rubber-based, acrylic rubber-based, and silicone-based sealing materials can be used to prevent dust.These sealing materials should be used with sufficient consideration for adhesive performance and moisture-proof performance with the synthetic foam book and moisture-proof film that will be used. It is preferable to do so and choose.

Moreover, in the above, the present invention is applied to the ceiling surface in 1. The explanation was given using the case of wrapping as an example, but it can also be applied to side walls, and it can also be applied not only to baths on basement floors, but also indoors of buildings that require high temperature and humidity conditions, such as textile factories. It's also effective against the emperor, Chiru.

[Brief explanation of drawings]

Figure 1 is a front view of the formwork during concrete pouring on the ceiling. Figure 2 is a cross-sectional view of a composite state of concrete and insulation material. 3rd +'! # a r b + c. d, d', and 6 are cross-sectional views of concrete, insulation boards, their composite structure, and joint voids. Figures 4a and 4b show the first plane of the installed insulation board. 1...Insulation board, foamed synthetic resin board 1'...Side end projection part 2.2' of insulating board 1...Formwork 5...Concrete T...Moisture-proof film T'... Moisture-proof film ear 8... Spacer 9... Sealing shoulder 10... Washer 11... Nail agent Masao Miyake and 1 other person Figure 1 A Figure 2 Figure 3 0 Figure 3 3 Figure C 0 Figure 3 d 0 Figure 3 d. Figure 3 e Figure 4 I Oral Procedures Amendment (formality) February 13, 1980 Director General of the Patent Office Aio Wakasugi 1, Indication of Case 1980 Patent Application No. 180765 Name (Name)
Dow Kako Co., Ltd. 4, Agent 5, Date of amendment order January 11, 1980 6, Number of inventions increased by amendment 07, Subject of amendment (118A detailed affidavit, line 9, line 6 "Figure 3 d ' is corrected as '3rd prisoner ddJ.' (2) 'd' on the bottom line of page 9 is corrected as r'ddJ. (3) 'd' on page 13, line 15 of the same page is corrected as 'rddJ'. (4) Correct Figure 43 as shown in the attached sheet. 13 Figure 0 Figure 3 Figure 3 C 0 Figure 3 d Figure 3 dd n Figure 3 e

Claims (5)

[Claims] (1) A plurality of heat-insulating boards with moisture-proof films pasted on the entire surface of one side of a foamed synthetic resin board so as to project slightly outward from the four peripheral edges of the synthetic resin board to form ears, It is a composite structure in which the film is laid adjacent to the non-concrete side, and concrete is placed on the other side of the insulation board to integrate it, and the edges of the moisture-proof film are bent into the gap with the adjacent insulation board. A structure of an insulating and moisture-proof ceiling or side wall characterized by a groove inserted in the wall. (2) A joint gap is formed by laying multiple insulation boards next to each other with a spacer thinner than the board, and the edges of the moisture-proof film are bent inward to the gap. The ceiling or side wall structure according to claim 1, characterized in that it is filled with a sealant. (3) Multiple pieces of insulation board thrown out by a part of the end side,
A patent characterized in that a joint gap is formed by laying the projecting portions adjacent to each other with the concrete side facing the concrete side, and a sealing material is filled into this gap with the edges of the moisture-proof film bent inward. A ceiling or side wall structure according to claim 1. (4) A plurality of heat insulating boards each having a moisture-proof film attached to the entire surface of one side of the foamed synthetic resin board so as to project slightly outward from the four peripheral edges of the synthetic resin board to form an ear part, A moisture-proof film is laid adjacent to the non-concrete side, and a nail with a washer is passed through the insulation board from the concrete side to the adjacent boundary, and the concrete formwork is placed on the non-concrete side of the insulation board. A method of constructing heat-insulating and moisture-proof ceilings or side walls, which is characterized by fixing the tips of nails, pouring concrete, and removing the formwork after the concrete and foamed synthetic resin board are integrated. (5) The construction method according to claim 4, characterized in that a washer having a projection protruding inward from the concrete is used.