JPH0689586B2 - Vinyl chloride resin sheet waterproofing method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a waterproofing method for a vinyl chloride resin sheet used in the industrial fields of civil engineering and construction.

INDUSTRIAL APPLICABILITY The present invention is an insulating construction method for linearly fixing a vinyl chloride resin waterproof sheet to a waterproof base surface of a building, in which the waterproof sheet is not superposed directly on a plate-shaped steel sheet coated with vinyl chloride resin around the waterproof sheet. To secure the watertightness and improve the workability of the lap between sheets by joining the joint part by welding and hot air fusion at the position where the vinyl chloride resin steel plate fixed to the terminal line is over. It is a waterproof construction method for the purpose.

(Prior Art) Conventionally, when a waterproof sheet is applied to a roof surface such as concrete, an adhesive is applied to the ground surface or both the ground surface and the sheet surface, and the waterproof sheet is placed on the roof or under a structure such as a roof. It was fixed to the ground.

In the case of such a construction method, when the waterproof base surface is in a wet state after rainfall or snowfall, it is necessary to wait until the base surface is dry, and when repairing the waterproof layer of a concrete structure or the like, an existing waterproof layer or It is often necessary to remove or repair the waterproof protection layer,
The construction period will be delayed and the cost will increase.

As for the joint of the so-called insulation method, as shown in Fig. 3, the method of joining the waterproof sheets directly above the vinyl chloride resin steel plate is generally used. However, when joining the joints, welding or hot air fusion is used. There has been a problem that the bonding work needs to be performed twice, which leads to an increase in the work time and the work cost.

(Problems to be Solved by the Invention) The present invention is intended to solve the above-mentioned problems of the conventional method, in which a waterproof layer is laid without using an adhesive,
To provide a waterproof method that can be applied without delay even on wet ground after rain and snow, and can be applied to a waterproof layer during repair work without repairing the underlying surface. It is in. Another object of the present invention is to provide a waterproof method in which the workability can be improved and the work cost can be reduced by completing the welding work of the joint portions of the waterproof sheets by welding and hot air fusion in one operation.

(Means for Solving the Problems) The present invention provides an insulating and waterproofing method in which end faces of a vinyl chloride resin waterproof sheet are linearly overlapped and fixed to a waterproof underground surface of a building, in the longitudinal direction of the vinyl chloride resin waterproof sheet 3. Anchor 4 for fixing a plate-shaped steel plate 5 covered with vinyl chloride resin around the waterproof sheet along the stretched terminal wire
After fixing using, the vinyl chloride resin waterproof sheet 3 to be next stretched is stretched over the insulating plate-like steel plate 5 so that the overlapping joint portions 3C of the waterproof sheets are 40 mm or more, This is a vinyl chloride resin sheet waterproofing method characterized in that the superposed joints (3C) are jointly joined by welding and hot air fusion.

(Operation) In the case of carrying out the insulation method of linearly fixing the vinyl chloride resin waterproof sheet of the present invention to the waterproof base surface, first of all, a plate coated with vinyl chloride resin around the longitudinal end line of the waterproof sheet is used. The steel sheet is mechanically fixed on one end of the waterproof sheet using a fixing anchor. After that, the next waterproof sheet is laid out so that the overlapping portions of the waterproof sheets are 40 mm or more over the plate-shaped steel sheet, and the joining portions are joined by using both welding and hot air fusion.

As described above, since the end portion of the waterproof sheet is mechanically fixed to the base, the waterproof sheet can be more reliably fixed to the lower ground of concrete or the like, and a safer and more reliable joint can be formed in terms of the waterproof function.

The present invention, as a method of fixing a waterproof sheet to a waterproof base surface, at the terminal portion of the waterproof sheet, attached with a plate-shaped steel plate and a fixing anchor coated with vinyl chloride resin on the periphery,
Next, since the waterproof sheet is overlaid on the fixing material and the joint part is joined by welding and hot air fusion together, construction can be done without delay even if the waterproof base surface is in a wet state. However, the waterproof layer can be constructed with almost no repair of the underlying surface.

Further, since the joining work of the joining portions of the waterproof sheets is completed only once, it is possible to obtain the effects of improving the workability and reducing the construction cost.

(Example) The details of the present invention will be described below based on an example shown in the accompanying drawings.

1, 1A of FIG. 1 shows a general concrete flat roof. When applying the waterproof construction method of the present invention to this concrete flat roof, first, the L-shaped PVC steel plate fixing member 2 is attached using the fixing anchor 4 along the rising edge of the parapet of the flat roof 1A.

Next, one end 3A of the vinyl chloride resin waterproof sheet 3 is temporarily laid along the corner line of the parapet, and then the other end 3B of the waterproof sheet 3 is firmly fixed to the other end 3B by using a plate-shaped polyvinyl chloride steel plate fixing material 5 using a fixing anchor 4. Then, the other end 3A is welded to the fixing member 2 made of PVC steel plate while being pulled. After fixing one end of the next waterproof sheet 3 with the fixing material 5, secure the next waterproof sheet 3 at a position over the end of the fixing material 5 made of PVC steel plate, and make sure that the 3C part is 4 cm or more, and pull it. In this state, a reliable waterproof layer is formed by jointly using welding and hot air fusion. The longitudinal end portions of the waterproof sheets 3, 3 are also welded to the fixing members 2 at the corresponding corners of the parapet in the pulled state in the same manner as described above. In the figure, reference numeral 6 denotes a fixing member at the end of the parapet, and reference numeral 7 denotes a waterproof sheet applied to the rising portion, which is the same material as the waterproof sheet 3 at the horizontal portion. Reference numeral 8 denotes a sealing material that seals the end portion of the waterproof sheet.

(Effects of the Invention) As a method of fixing a waterproof sheet to a waterproof base surface of a building or the like, the present invention uses a plate-shaped steel plate 2 having a vinyl chloride resin coated around 3B on one end of the waterproof sheet and an anchor 4 for fixing. Mechanically, after allocating the next waterproof sheet so that the 3C part overlaps 4 cm or more from the end of the one end 3B of the waterproof sheet, the joining part is joined by welding and hot air fusion together, so it is reliable. It has the advantages of good water-tightness, good workability and reduced construction cost, and can be installed without delay even if the waterproof substrate surface is in a wet state. There is an advantage that the waterproof layer can be constructed without repairing the ground.

Also, since one end of the waterproof sheet is mechanically fixed with a fixing material, the waterproof sheet can be more reliably fixed to the concrete base surface, etc., so that a safer and more reliable joint can be obtained in terms of waterproof performance. There are advantages.

[Brief description of drawings]

 FIG. 1 is a partial cross-sectional view of a flat roof, FIG. 2 is an enlarged view of a waterproof sheet joint portion, and FIG. 3 is an enlarged view of a conventional waterproof sheet joint portion. 1,1A… Waterproof substrate 2… Steel fixing material coated with vinyl chloride resin around 3… Vinyl chloride resin waterproof sheet 3A… One end of vinyl chloride resin waterproof sheet 3B… Other end of vinyl chloride resin waterproof sheet 3C… Vinyl chloride Joints between resin waterproof sheets 4 ... Fixing anchors 5, 6 ... Fixing material made of steel sheet with vinyl chloride resin coated around 7 ... Vinyl chloride resin waterproof sheet 8 ... Sealing material

Claims (1)

[Claims] 1. An insulating and waterproofing method in which end faces of a vinyl chloride resin waterproof sheet are linearly overlapped and fixed to a waterproofing base surface of a building, and waterproofing is performed along a terminal line extended in the longitudinal direction of the vinyl chloride resin waterproof sheet 3. After fixing a plate-shaped steel plate 5 coated with vinyl chloride resin around the sheet from above with a fixing anchor 4, a vinyl chloride resin waterproof sheet 3 to be expanded next is passed over the insulating plate-shaped steel plate 5. A vinyl chloride resin sheet characterized in that the waterproof sheets are superposed and expanded so that the superposed joint portions 3C are 40 mm or more, and the superposed joint portions 3C are joined together by welding and hot air fusion. Waterproof construction method.