JPS62108122A - Water leakage detecting method - Google Patents

Abstract

PURPOSE:To detect water leakage in the outer wall, etc., of a building, by providing a material which generates a gas when reacting to water below a waterproofing layer and detecting the gas which is generated by the material reacting to water when the waterproofing layer cracks. CONSTITUTION:An asphalt primer 2 is applied to the surface of a concrete base 1 and a waterproofing layer is formed by sticking molten asphalt 3 to the surface of the primer 2. Then a material which is produced by laminating a sheet 4 containing a gas generating substance to a roofing 5 is put on the molten asphalt 3. After the material is put on the molten asphalt 3, the 2nd waterproofing layer is formed by sticking molten asphalt 6 again to the surface of the roofing 7. Then a roofing 7 is put on the 2nd waterproofing layer and the 3rd waterproofing layer is formed by sticking molten asphalt 8 to the surface of the roofing 7. Finally, a sand containing roofing 9 is stuck to the 3rd waterproofing layer 8 and this work is finished by apply ing silver paint 10 to the surface of the roofing 9. When water leakage takes place, rain water penetrates into the sheet layer 4 and the gas generating material generates a gas upon reacting to the water. When the gas is detected by means of a gas detector, leak test by filling water, etc., the abnormality of an outer wall, etc., can be known.

Description

[Detailed Description of the Invention] “Objective of the Invention 1 1” Disclosure ■ The present invention can be used on the roof of a building or outside! ! ! The present invention relates to a method for detecting water leakage in, etc.

Conventional methods for detecting water leaks include a water test or, in some cases, mixing ultrafine powder pigments into the water test water to investigate the leakage route, or placing aluminum foil under the waterproof layer. Leave it there,
There was a method of detecting water leaks by using a detector from above to determine whether there was a current flow (the magnitude of electrical resistance). Recently, there has been a method in which fluorocarbon gas is injected from the water leakage part under the slab, and the 70 ton gas is detected at the top of the waterproof layer.

The light is about to change to the angle tL @J α However, since the conventional method of mixing pigments and the method of injecting CFC gas described above requires detection through the concrete structure, the permeation path of pigment water and gas is long, and it takes time to detect. There was also the problem of having to cut off the structure or destroy the walls and ceilings hiding it in order to detect it. Furthermore, in the case of electrical resistance, the reliability of detection is low, and the reality is that this method is not generally adopted at present.

The present invention has been made to solve the above-mentioned conventional problems, and its purpose is to generate gas caused by water leakage from the leakage position of the waterproof layer and directly detect it. The object of the present invention is to provide a method that can detect a location.

[Configuration of the invention 1. 3. The water leakage detection method of the present invention is to place a substance that reacts with water to generate gas at the bottom or middle of the waterproof layer, or to mix it into an adhesive to detect water leakage. VF is detected by detecting the gas generated by the reaction with water and detecting the location of the water leak.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the method of the present invention will be described below with reference to the drawings.

The figure is a cross-sectional view showing an example of exposed 7s 7Alt waterproof adhesion, and 1 is a concrete base. An asphalt primer 2 containing asphalt dissolved in a solvent is applied to the surface of the concrete base 1 to infiltrate into the concrete surface and improve adhesion of the waterproof layer. Molten asphalt 3 is applied to the surface of the asphalt primer 2.
Paste it to create a waterproof layer.

On the surface of the molten asphalt 3, a sheet 4 containing a gas-generating substance, which will be described later, is laminated with roof ink 5 and laid.

Above roof ink 5: & surface is melted asphalt 6 again
A waterproof layer of Pt52 is created, and a third waterproof layer, molten asphalt 8, is pasted over the roofing layer.

Roof ink 9 with sand is applied to the surface of the molten asphalt 8.
, and finish by applying Silver Paint 10 to its surface.

The gas generating substance to be contained in the sheet 4 may basically be any substance that generates gas by reacting with water, such as divertical calcium CaC2 which generates acetylene, aluminum which generates hydrogen Sodium acid Na [Af! (O)I)-], calcium cyanamide CaCN2 which generates ammonia, natural saltpeter KNO3 which generates nitrogen dioxide, etc. are suitable.

When water leaks in the asphalt waterproof structure as described above, rainwater or the like enters the layer of the sheet 4, reacts with the gas-generating substance contained therein, and generates gas.

The generated gas is detected by a commercially available gas detector, by applying a surfactant and blowing out bubbles, or by the Minamata test.

It can also be detected by the five human senses.

In Example 1, the gas generating substance was contained in the sheet 4, but it could also be mixed in the waterproof sheet (7L) M, etc.), adhesive such as asphalt, and primer as a fine powder, powder, or granule. Also good.

In addition, in the case of the floating construction method, a sheet containing a gas-generating substance is placed between the base and the sheet (felt, etc.), or a sheet containing a gas-generating substance is placed from the ventilated thin part. Alternatively, a detection gas or gas generating substance may be blown into the ventilator.

[Advantageous Effects of the Invention 1 (1) When a water leak occurs, gas is immediately generated and can be detected quickly and reliably.

(2) 7s/7ft waterproofing, sheet waterproofing, paint film waterproofing on the roof of a building, and elastic spraying as wall waterproofing can be applied to waterproofing external walls of one material.

[Brief explanation of drawings]

The figure is a cross-sectional view of an asphalt waterproof structure. 1... Concrete base, 2... Asphalt primer, 3... Molten asphalt, 4... Sheet,
5... Roof ink, 6... Molten asphalt, 7
... Roof ink, 8... Molten asphalt, 9.
...Roof ink, 10...Silver paint.

Claims (1)

[Claims] A substance that reacts with water to generate gas is placed at the bottom or in the middle of the waterproof layer, or mixed into asphalt or adhesive, and the gas generated by reacting with water when the waterproof layer ruptures is detected and the gas generated is detected. A water leak detection method characterized by detecting a location.