JP2001012022A - Waterproofing method using fabric type perforated sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproofing method using a fabric type perforated sheet capable of improving waterproof property, of reducing material and work costs and of simplifying work on the job site. SOLUTION: A fabric type perforated sheet 1 with holes each having a diameter of 1.2 mm to 15 mm at the intervals of 3 mm to 100 mm in the fabrics or this fabric type perforated sheet 1 is immersed in or coated with a solution mixed with vinyl acetate and corn starch, and the impregnated and hardened fabric type perforated sheet 1 is laid on a waterproof work surface, an adhesive is coated to a hole portion of the fabric type perforated sheet, an adhesive 5 is flowed from the portion of the perforation 3, only the vicinity of the perforation portion of the fabric type perforated sheet 1 is spot-bonded to the backing surface 6 of the waterproofing work, thereafter, a waterproof material 4 is applied to the surface of the fabric type perforated sheet 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building roof, walls,
The present invention relates to a waterproofing method using a woven perforated sheet used for a roof, a balcony, a floor, or the like, or a woven perforated sheet impregnated and cured with vinyl acetate and corn starch.

[0002]

2. Description of the Related Art Conventional roofs, rooftops, balconies,
A waterproof sheet is laid on a waterproof construction surface such as a floor to prevent rainwater from entering the room.

When such a waterproof sheet is used, the waterproof sheet is laid and fixed directly on the waterproofing surface by means of tacking means or a tucker or the like, or it is laid and fixed on the lower surface of the waterproof sheet with an adhesive. I was

However, when the waterproofing sheet is fixed using fixing means such as tacks or tuckers, the fixing means is exposed to the outside,
Further, in combination with the fact that the fixing means has reached the base, rainwater may have entered from the perforations of the tacks or tuckers, causing rain leakage.

[0005] In addition, attaching the entire back surface of the waterproof sheet with an adhesive requires skill in the application of the adhesive at the construction site, which is troublesome and time-consuming.

[0006] In the waterproofing method in which the entire back surface of the waterproof sheet is adhered to the waterproof construction surface with an adhesive, and a waterproof material is applied thereon, for example, when cracks occur in concrete or the like on the waterproof construction surface, the waterproof sheet is further removed. Cracks may also form in the waterproof layer provided thereon, causing rainwater to enter.

In the sheet waterproofing method, in addition to the entire surface bonding method of the waterproof sheet, there are a spotting method of partially bonding, a floating method of bonding only the end portion of the waterproof layer to the base, and an insulating method. A deaeration board had to be installed for deaeration, which was troublesome on site and cost was not reduced. "Blowing of waterproof layer" in waterproofing methods such as asphalt waterproofing, sheet waterproofing, and coating film waterproofing
It is the water remaining on the base that causes the "water blister of the waterproof layer". Moisture remaining on the base was heated by solar heat to become expanded water vapor, which required degassing.

[0008] There is a perforated tarpaulin in the asphalt tarpaulin. The purpose of the perforated tarpaulin is so-called deaeration for bleeding air. In the asphalt waterproofing method, air is easily formed due to thick coating, which causes a significant cause of blistering and deterioration of the asphalt waterproof layer. Cracks in the foundation of concrete or the like also cause cracks in the asphalt waterproofing layer. Therefore, a vent hole for bleeding air is required, which is completely different from the object of the present invention. In the case of the present invention, air can freely flow between the fabric-type perforated sheet and the waterproof base surface, and the freely flowing air can freely enter and exit from the outside through deaeration holes provided on the surrounding wall side. are doing. Therefore, the waterproofing method according to the present invention is completely different from the conventional waterproofing method that had to shut off the air,
Conversely, it is a waterproofing method that may contain air.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and aims at improving waterproofness, reducing materials and work costs, and simplifying on-site work. It is an object of the present invention to provide a waterproofing method using a woven perforated sheet impregnated with a mixed solution of vinyl acetate and corn starch or impregnated and applied.

[0010]

In order to achieve the object, woven fabrics of various materials have a diameter of 1.2 to 1 at intervals of 3 to 100 mm.
A fabric type perforated sheet with a hole of 5 mm or a fabric type perforated sheet prepared by impregnating and curing this fabric type perforated sheet with vinyl acetate and corn starch, laying it on the waterproof construction surface, and fabric type perforated sheet Apply adhesive to the hole of the sheet and pour the adhesive from the hole to make only the perimeter of the hole of the woven perforated sheet waterproof and join it to the groundwork surface, and then waterproof to the woven perforated sheet surface This is a waterproofing method of applying materials.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the waterproofing method using a woven perforated sheet according to the present invention or a woven perforated sheet impregnated and applied by impregnating or applying a mixed solution of vinyl acetate and corn starch, the waterproof construction is performed. Even if a crack is formed on the surface, the woven perforated sheet does not cause any damage to the woven perforated sheet itself, since only the point joints around the crack are peeled off.
This is because the woven fabric perforated sheet is laid on the waterproof construction surface, an adhesive is applied to the holes of the woven fabric perforated sheet, and point bonding is performed so that the periphery of the perforated portion is adhered to the base. By applying a coating film waterproof material on the upper surface of the woven perforated sheet, waterproofing can be easily and reliably performed.

The woven fabric used in the woven perforated sheet has abrasion resistance and impact strength, excellent tensile strength and tear strength, etc., and has resistance to alkalis, acids, organic solvents, and chemicals. Must be stable. In addition, it must have low gas and moisture permeability and excellent weather resistance. As long as these conditions can be satisfied, the material of the woven fabric of the woven fabric perforated sheet may be any of natural fibers as well as chemical fibers such as regenerated fibers, semi-synthetic fibers, synthetic fibers, and inorganic fibers.

In the case of natural fibers, for example, woven fabrics using fibers such as hemp, cotton, wool, silk and wood can be used. The chemical fibers include regenerated fibers, semi-synthetic fibers, synthetic fibers, and inorganic fibers. As the regenerated fibers, a woven fabric using fibers such as cellulose-based viscose rayon and cupra or a woven fabric using protein-based fibers can be used. As the semi-synthetic fiber, a woven fabric using fibers such as cellulose acetate and acetylated acetate can be used. For synthetic fibers, polyvinyl alcohol-based fibers such as vinylon fiber, polyamide-based fiber nylon, polyvinylidene chloride-based fiber vinylidene fiber, vinyl chloride-based fiber, acrylonitrile-based fiber, polyester-based fiber, polyurethane-based fiber, polyethylene-based fiber, and polypropylene-based fiber Fabrics using fibers, polystyrene fibers, Teflon fibers of polytetrafluoroethylene fibers, polyurea fibers, polyvinylidene cyanide fibers, aramid fibers, and the like can be used. In inorganic fiber, metal fiber, glass fiber,
A woven fabric using rock fiber, slag fiber or the like can be used.

The woven fabric used for the woven perforated sheet is composed of a combination of warp yarns and weft yarns, and the basic structure which is the basic structure of the combination is plain weave, oblique weave, satin weave, or the like. In the case of the present invention, a hole is automatically formed in advance in the process of weaving the woven fabric, and a portion other than the hole is densely woven, so that the waterproof material applied to the upper surface can be prevented from permeating through the weave. That is, the formation of gaps and holes in the woven fabric can be arbitrarily adjusted depending on the surface width of the woven yarn of the woven fabric and the weaving method. When an existing fabric is used, holes having predetermined dimensions can be mechanically opened at predetermined intervals.

[0015] Depending on the scale or location of the waterproof construction site and other construction conditions, it is necessary to impart complete water shielding and rigidity to the fabric. For this purpose, a woven perforated sheet is used in which a woven fabric having perforated holes of predetermined dimensions at predetermined intervals is impregnated and hardened by dipping or coating a solution in which vinyl acetate and corn starch are mixed at a predetermined ratio.

The thickness of the woven fabric used for the woven perforated sheet is preferably in the range of 0.2 to 2.0 mm. The size of the hole formed in the surface of the woven fabric is preferably in the range of 1.2 to 15 mm. When the thickness is less than 1.2 mm, the adhesive does not flow sufficiently and the adhesive bonding with the waterproof construction surface is insufficient and the adhesive is easily peeled off. The stretching force becomes strong, and it becomes impossible to adhere the woven perforated sheet uniformly.

The interval between the holes formed in the woven fabric perforated sheet must be determined according to the size of the holes, the thickness and the material of the woven perforated sheet, but a range of 3 to 100 mm is preferable. If it is less than 3 mm, it takes too much time to complete the construction. This is because if the distance is 100 mm or more, the interval is too large, and the effect of spot joining is reduced.
The holes may be arranged in a grid pattern or in a staggered pattern.

The adhesive to be applied to the holes by laying the woven perforated sheet on the waterproof construction surface is determined by the material of the woven perforated sheet and the like. Vinyl copolymers, latex rubbers, latex epoxy modified rubbers, epoxy resins, urethanes, and the like can be used.

Acrylic, urethane, ethylene-vinyl acetate copolymer, chloroprene, etc., are used as waterproof coatings for waterproofing the upper surface of the woven perforated sheet. A non-combustible coating waterproofing material equivalent to a material is more preferable. The coating film waterproofing material to be waterproofed is formed by applying a primer on an adhesive, applying a middle coat once or twice, and then applying a top coat top coat.

[0020]

Embodiments of the present invention will be described below.

Example 1 When the original structure is composed of plain weave, and when weaving in a knit weave style using polyester fiber yarn, holes with a diameter of 3 mm are automatically formed at intervals of 5 mm each in the vertical and horizontal directions, and the parts other than the holes are densely woven. As a result, a woven perforated sheet having a thickness of 1.2 mm which was made not to pass through the waterproof material was produced.

An epoxy resin adhesive (trade name “Tilement EP-900”, manufactured by Tilement Co.) is applied to the holes of the woven perforated sheet on the base concrete surface to form holes in the woven perforated sheet. The part was attached and bonded to the base concrete surface.

The upper surface of the woven perforated sheet is waterproofed by applying a primer, a middle coat and a top coat of a non-combustible emulsion-type acrylic coating waterproofing material (trade name: "Reball Mighty" manufactured by Reball Co., Ltd.) once each on the base material. Construction was performed.
After that, artificial width 1m over the entire surface of the ground concrete surface
Although a crack of m was generated, only one joint portion of the hole of the woven perforated sheet around the crack was peeled off, and no damage was seen on the woven perforated sheet at all, and no abnormality occurred in the waterproof layer. .

Example 2 A plain woven perforated sheet having a thickness of 1.0 mm and a square hole of 3 mm in length and width was formed using the polyester fiber used in Example 1 and a wide yarn of 5 mm in length and width. The gaps other than the woven perforated sheet wide yarn all constitute holes. Using this fabric type perforated sheet, construction was performed by the same waterproofing method as in Example 1, and the same results as in Example 1 could be obtained.

Example 3 A hemp bag, which is a hemp fiber woven fabric having an original texture of plain weave, is immersed in a solution obtained by adding 15 parts by weight of a commercially available corn starch to 100 parts by weight of a commercially available vinyl acetate emulsion and a small amount of other additives. It was impregnated and hardened. The hemp bag has a hole at an arbitrary place because the gap is relatively large. By soaking in the solution, only a large void remains as a hole, and the other part is covered with a weave and the waterproof material cannot pass through. Using this fabric type perforated sheet, construction was performed by the same waterproofing method as in Example 1, and the same results as in Example 1 could be obtained.

[0026]

As described above, the waterproofing method using the woven perforated sheet according to the present invention can greatly simplify the on-site work, can reduce the material and the work cost, and can achieve a high level of operation. The waterproof performance and the ability to follow the construction base surface were significantly improved.

[Brief description of the drawings]

FIG. 1 Fabric type perforated sheet

FIG. 2 is a cross-sectional view of waterproof construction using a woven perforated sheet.

[Explanation of symbols]

 1. Fabric type perforated sheet 2. Woven fabric 3. Hole 4. 4. Waterproof coating film Adhesive 6. Waterproof construction base

Claims (2)

[Claims] 1. A fabric having a diameter of 1.2 at intervals of 3 to 100 mm.
A woven perforated sheet with a hole of ~ 15 mm is laid on the waterproof construction surface, an adhesive is applied to the holes of the woven perforated sheet, and the adhesive is poured from the perforated portion, and the perforated portion of the woven perforated sheet. A waterproofing method characterized in that only the periphery is point-joined to the waterproofing surface, and then a waterproof material is applied to the surface of the woven perforated sheet. 2. The fabric has a diameter of 1.2 at intervals of 3 to 100 mm.
2. A woven perforated sheet having a perforation of about 15 mm, which is impregnated and cured by dipping or coating in a mixed solution of vinyl acetate and corn starch.
The described waterproofing method.