JP2004052299A - Waterproof finish structure and waterproof finish method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproof finish structure having the effect constructible even if the moisture content of a backing is high, causing no restriction by a construction property and a construction condition for tearing off the backing such as existing resin waterproof, causing no problem of tearing-off and water leakage by wind and rain, and superior in durability. <P>SOLUTION: This waterproof finish method is provided for forming and finishing a fiber reinforced resin layer by filling and hardening a thermosetting resin in a hole arranged on a base body surface or the base body inside from a ventilating sheet body by arranging the ventilating sheet body on a base body such as various backings. This waterproof finish structure is a structure for continuously connecting and fixing the base body surface or the base body inside, the ventilating sheet body and the fiber reinforced resin layer via the thermosetting resin filled and hardened in the hole arranged in a proper place of a ventilating sheet or a hole arranged over the base body inside from the ventilating sheet body by arranging the fiber reinforced resin layer via the ventilating sheet body. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof finish structure and a construction method for waterproofing new or existing parts such as floors of buildings, parking lots, rooftops, and the like, and more particularly, to a breathable sheet body on a base such as various floors. A fiber reinforced resin layer is successively applied on the air permeable sheet body and finished, and is filled in a hole extending from the air permeable sheet body to the inside of the base or the surface of the base and cured through a thermosetting resin. The present invention relates to a waterproof and air-permeable finish structure in which a base, a breathable sheet body and a fiber-reinforced resin layer are connected, and a waterproof finish method therefor.
[0002]
[Prior art]
Conventionally, waterproofing on new or existing parts such as rooftops, floors, and parking lots of buildings includes waterproofing with a waterproof sheet, resin waterproofing by applying a resin to form a waterproof layer, thermosetting resin and fiber reinforced material. A construction method such as FRP waterproofing, which is a composite of the above, has been adopted.
In the case of such waterproofing work, if the work is not applied to a sufficiently dried base, the waterproof layer will be blistered due to the vapor pressure or air expansion of the base water, causing peeling, water leakage, etc. Problems such as damage occur. However, on the other hand, there has been a demand for an improved construction method in which the demand for shortening the construction period is strongly improved.
For repair work on existing resin waterproof floors, FRP floors, etc., the removal of the existing floor requires a lot of man-hours and time, so it is virtually impossible to do so. There has been a demand for a repairable construction method that can be carried out in a building.
[0003]
[Means for Solving the Problems]
The present invention has been studied and developed in view of such circumstances, and provides a waterproof finish method and a waterproof finish structure that can be waterproofed even if the state of the groundwork is not always appropriate with the conventional construction method. This will be described in detail below.
[0004]
As described above, the waterproof finish structure of the present invention arranges a breathable sheet body on a base such as a new floor or an existing floor, and forms a fiber-reinforced resin layer on the breathable sheet body. A thermosetting resin is filled into the hole extending from the sheet body to the inside of the substrate or the surface of the substrate, cured, and the substrate, breathable sheet and fiber reinforced resin layer are connected and fixed. Can be
[0005]
The waterproof finishing method according to the present invention can be applied to new floors, rooftops, parking lots, existing floors, parking lots, rooftops, etc. as described above, and the base material is also mortar, concrete, foam concrete, Iron plates, stone plates, wooden plates, resin waterproof floors, etc. can be constructed of any material, such as mortar, concrete, foam concrete etc. It is advantageous in that it can be installed even if the moisture content of the base is high, and it can be installed on an aging existing resin waterproof floor, etc., so that it can be executed without any problem under any construction conditions. .
[0006]
The air-permeable sheet body according to the present invention is not particularly limited as long as the air-permeable sheet body is made of a material or a structure having air permeability, and examples thereof include synthetic fibers such as polyester, nylon, vinylon, and acrylic, and One or both sides of a base material such as nonwoven fabric or woven fabric processed from composite fiber mixed with inorganic fiber such as glass fiber, natural fiber such as hemp fiber, synthetic fiber mixed with inorganic fiber, natural fiber, etc. A thin non-permeable layer is laminated on the base material, or a substrate in which the substrate is laminated on both sides of the non-permeable layer is used.
In such a breathable sheet body, the base material of the breathable layer preferably has a thickness of 0.5 to 2 mm. If the thickness is 0.5 mm or less, the thickness becomes thin with time, and there is a possibility that air permeability is lost, which is not preferable.
The air-permeable sheet may be provided with holes of various shapes such as a circle and a square in an appropriate place.
[0007]
As the non-permeable layer, a resin sheet, for example, a synthetic resin sheet such as a polyethylene resin, a polypropylene resin, or a vinyl chloride resin, or a non-permeable material having a thickness of about 0.1 to 1.0 mm such as an asphalt sheet is used. .
[0008]
In the case of a breathable sheet in which the non-breathable layer is laminated only on one side, it is desirable to arrange the non-breathable layer upward. By arranging the non-breathable layer on the top, it is possible to prevent the thermosetting resin to be applied thereon from penetrating into the inside of the breathable sheet body and prevent the permeability from being impaired.
[0009]
Other examples of the breathable sheet body include, for example, a sheet having a thickness of 1 to 5 mm made of various rubber sheets, asphalt sheets, plastic sheets, and the like, in which a planar shape is a lattice shape, a hexagonal shape, or the like, and a planar shape. Can also be used as a gas permeable sheet that can be used as a gas permeable portion that has a groove in contact with the substrate side with the grooved surface in contact with the base.
As such a breathable sheet body, a sheet provided with holes at appropriate positions can be used.
[0010]
The base and the breathable sheet may be simply arranged or fixed by bonding with an adhesive.
When it is difficult to directly adhere to the substrate, a resin primer such as a urethane resin or an ethoxy resin may be applied to the surface of the substrate and then adhered with an adhesive.
[0011]
A fiber reinforced resin layer is applied to the surface of the breathable sheet.
The formation of the fiber reinforced resin layer, the reinforcing fiber sheet on the surface of the non-breathable layer laminated on the base material of the breathable sheet body, for example, a glass fiber sheet is disposed and an epoxy resin mixed with a curing agent, A thermosetting resin such as an unsaturated polyester resin or a vinyl ester resin is applied, and a reinforcing fiber sheet is further laminated or a thermosetting resin is applied on the non-breathable layer on the surface of the breathable sheet body, and then coated. It is obtained by stacking a reinforcing fiber sheet on the surface, further applying a thermosetting resin, or the like, and curing the reinforcing fiber sheet in a state where the thermosetting resin is permeated to form a fiber reinforced resin layer.
[0012]
As a means for fixing the air-permeable sheet body to the base, filling and curing an individual thermosetting resin or a thermosetting resin used for applying a fiber-reinforced resin layer into holes provided in appropriate places of the air-permeable sheet body. Method for connecting and fixing the air-permeable sheet body and the substrate by using the method described above, providing a hole from the surface of the air-permeable sheet body to the inside of the substrate, and using the hole to apply an individual thermosetting resin or fiber-reinforced resin layer A method of connecting and fixing the base, the breathable sheet body, and the fiber reinforced resin layer by filling and curing the thermosetting resin to be used is adopted.
Further, a method of driving and fixing a fixture such as an anchor from the top of the air-permeable sheet into the inside of the base may be used together.
[0013]
In addition, using a breathable sheet body provided with holes at appropriate places such as lattice positions, the holes are filled with the thermosetting resin used for forming the individual resin or the fiber reinforced resin layer as described above. Then, a method of connecting and fixing the substrate surface, the air permeable sheet body, and the fiber reinforced resin layer by curing and curing may be adopted.
[0014]
The thermosetting resin for connecting and fixing the substrate, the breathable sheet body and the fiber reinforced resin layer may be a different type of thermosetting resin from the thermosetting resin used for the construction of the fiber reinforced resin layer. .
In order to impart toughness to the thermosetting resin and to improve the connection strength of the base, the breathable sheet and the fiber-reinforced resin layer, reinforcing fiber chips such as glass fiber and carbon fiber are mixed or metal fittings of various shapes are used. Means such as insertion may be adopted.
[0015]
Even if a top coat such as an acrylic resin paint, acrylic / silicone resin paint, acrylic / urethane resin paint, or unsaturated polyester resin paint is applied to improve the finished appearance of the surface or to improve the weather resistance. Good.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Example 1
A soft vinyl chloride resin film having a thickness of 0.3 mm was laminated on a nonwoven fabric processed from a polyester fiber having a basis weight of 180 g / m ^{2 on} a concrete floor having a water content of 9.1% after 10 days from the casting. An air-permeable sheet having 20 mm circular holes provided in a grid pattern at 1-meter intervals was arranged, and a cutting hole having a diameter of 20 mm and a depth of 30 mm was formed in the concrete floor through the holes. Then, 1.5 kg / m ^{2 of} an unsaturated polyester resin containing a curing agent (Aika Kogyo Co., Ltd. Joliace JU-2000 / hereinafter referred to as the resin) was applied to fill the cut holes and the holes, and the air permeability was increased. The surface of the sheet was wetted. After placing a glass fiber mat having a basis weight of 450 g / m ^{2 in} an uncured state, the resin is further applied at 1.5 kg / m ² to penetrate into the glass fiber mat, and cured to cure the fiber reinforced resin. A layer was formed, and a waterproof layer in which the concrete floor, the breathable sheet member, and the fiber-reinforced resin layer were connected and fixed was formed through the cured product of the resin cured in the cut holes.
Further, as a top coat, an unsaturated polyester resin containing a curing agent (Aika Kogyo Co., Ltd., Joliace JE-2080) was applied at 0.4 kg / m ² to obtain a waterproof finish structure. One year after the construction, no abnormality was found in the blisters and waterproofness of the waterproof layer.
[0017]
Example 2
The same construction as in Example 1 was carried out on a urethane resin waterproof-finished floor 10 years after construction (the space between the base and the waterproof layer was not dried) to complete the floor of Example 2. One year after the construction, no abnormality was found in the blisters and waterproofness of the waterproof layer.
[0018]
Comparative Example 1
The same floor as used in Example 1 was coated with a urethane resin primer (Aika Kogyo Co., Ltd. Joliace JU-1270) 0.2 kg / m ² and dried, and then a urethane resin (Aika Kogyo Co., Ltd. Joli Seal JW) -41) was applied at ² kg / m ² to finish the resin waterproof floor. After 30 days from the construction, when the surface condition of the floor and the presence or absence of abnormalities were checked, many blisters were observed on the floor surface.
[0019]
Comparative Example 2
Example 1 urethane resin primer on the same floor and using (Aica Kogyo Co. Joli Ace JU-1270) 0.2kg / ^{m 2} was applied to, after drying, 0.5 kg / ^{m 2} and the resin After application, a glass fiber mat having a basis weight of 450 g / m ² is immediately attached. Further, the resin was applied at 1.0 kg / m ² , permeated and cured to form a fiber reinforced resin layer, thereby forming a waterproof layer. Next, as a top coat, an unsaturated polyester resin containing a curing agent (Joliace JE-2080, Aika Kogyo Co., Ltd.) was applied at 0.4 kg / m ² .
One year after the application, floating of the waterproof layer occurred, and it was recognized that water had accumulated between the base and the fiber-reinforced resin layer.
[0020]
【The invention's effect】
Conventionally, there is a problem that construction cannot be performed due to the high moisture content of the groundwork, and construction cannot be performed without removing the existing floor.However, it was possible to construct only a very limited number of properties. Since the water vapor volatilized from is released to the outside through the air-permeable sheet, there is an effect that the work can be performed even if the moisture content of the base is high. In addition, since the work can be performed on the existing base without removing the base such as resin waterproofing, the work can be performed immediately without being restricted by the construction property and the construction conditions.
Further, the waterproof finish structure of the present invention is provided with a fiber reinforced resin layer via a breathable sheet body, and furthermore, a hole provided in an appropriate place of the breathable sheet or a hole provided from the breathable sheet body to the inside of the base. Because the surface of the substrate or the inside of the substrate is connected and fixed to the air-permeable sheet and the fiber-reinforced resin layer via the filled and cured thermosetting resin, the waterproof layer and the substrate are firmly fixed. It is finished in a durable, waterproof structure that has no problems such as peeling or leakage due to wind and rain.
[0021]
[Brief description of the drawings]
FIG. 1 shows a cutting hole (7) provided from a gas permeable sheet (2) to the substrate (1) via a gas permeable sheet (2) arranged on the substrate (1). FIG. 4 is a partial cross-sectional view of one embodiment of the present invention showing a waterproof finish structure in which a fiber-reinforced resin layer (6) is formed by being connected and fixed to a cured thermosetting resin (3).
[0021]
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Substrate 2 Breathable sheet 3 Cured thermosetting resin 4 Glass fiber mat 5 Cured thermosetting resin 6 Fiber reinforced resin layer 7 Cutting hole

Claims (2)

A breathable sheet body is formed on a substrate, and a fiber reinforced resin layer is sequentially applied on the breathable sheet body and finished, and filled and cured in holes extending from the breathable sheet body to the inside of the substrate or the surface of the substrate. A waterproof finish structure in which a base, a breathable sheet, and a fiber-reinforced resin layer are connected and fixed to each other via a thermosetting resin. Arranging a gas-permeable sheet on a substrate, and forming a fiber-reinforced resin layer on the gas-permeable sheet, filling a hole from the gas-permeable sheet to the inside of the substrate or the surface of the substrate with a thermosetting resin, A waterproof finishing method comprising curing and connecting and fixing a substrate, a breathable sheet, and a fiber reinforced resin layer.

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