JPS62111047A - Humidityproof and insect-control method by high concentration rubber asphalt - 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 A. Field of Industrial Application The present invention relates to a method for moisture-proofing houses and insect-proofing wooden parts using a high-concentration rubber asphalt emulsion (hereinafter abbreviated as rubber asphalt). The biggest threat to the durability of wooden buildings is termite damage and moisture, which is a breeding ground for termites. Moisture is also a major cause of wood rot.

Conventional technology As a countermeasure against this problem, termiticides such as chlordane have been sprayed in liquid or powder form on the soil beneath the floor.
Insect control methods such as coating the foundation foundations and the lower part of the floor of pillars, or spreading sheets impregnated with termiticides have been put into practical use.

Termites nest underground and build ant trails all the way to the foundations of buildings, reaching wooden parts such as pillars and beams and causing feeding damage, so basically the most effective treatment is to spray the soil, which serves as a warm nest, with chemicals. It is said that

Problems to be Solved by the Invention However, many of these agents, including chlordane, are organic chlorine and organic phosphorus compounds, and require special care when handling them, and they cannot be simply impregnated into the soil. In some cases, it has caused pollution problems such as water contamination, so it is considered undesirable to directly disperse the chemicals into the soil. On the other hand, although the method of laying sheets such as polyethylene film is simple, moisture tends to aggregate in the overlapped areas and the areas where they fit into the foundation, which can lead to the cultivation of fungi, especially the wood-decaying fungi Namidatake of the Basidiomycete family. often promotes the occurrence of

This mushroom breeds in humid, dark places and attaches to the base of the foundation pillars and floorboards of houses, causing them to rot. Along with termites, this fungus is one of the most necessary preventive measures for wooden houses. Even seemingly reasonable methods may have serious drawbacks. In addition, the method of laying processed sheets treated with insect repellents still has the problem of water agglomeration in the overlapping parts, and there are other issues that need to be resolved, such as the formation of voids in the areas where the sheets meet the foundation. Under the circumstances described above, in order to protect the basic structure of a wooden building, a treatment that guarantees both moisture-proofing and insect-proofing effects must be applied, and a method that does not cause pollution is required. In contrast to the conventional construction methods such as spreading and sheet-laying, the present invention is based on high-density rubber asphalt and has an integrated moisture-proof and insect-proof W.
It is provided as a new construction method for moisture and insect prevention in which an I layer is formed on the subfloor surface and the foundation, and if necessary, dry sand or artificial lightweight sand is sprayed on the finished surface of the protective layer. Explain in detail.

20 Means for Solving Problems Lay asphalt felt on the subfloor surface with an overlap of about 5 scratches and tighten with needles at key points. In particular, when tensile reinforcement is required, a fibrous sheet such as polyester or vinylon, specifically a nonwoven fabric, is used alone or in combination with asphalt felt. If the nonwoven fabric is treated with a polymeric absorbent, the emulsion can be quickly coagulated by utilizing the unstable emulsifying properties of rubber asphalt, which coagulates with a slight dehydration effect as a characteristic of highly concentrated emulsions. I can do it. In addition, if asphalt felt is spread on the base surface before laying the nonwoven fabric, initial moisture proofing and moisture absorption effects of rubber asphalt can be obtained.As will be described later, when a coagulant is added to rubber asphalt
Even if the water level chemical solution squeezed out from the coating film is contained, the asphalt felt absorbs it, so there is no risk of it leaking into the soil. Next, rubber asphalt to which the required amount of termite control agent has been added is applied to the asphalt felt and fibrous reinforcing material laid on the subfloor as described above.

Rubber asphalt with an effective solid content of 80% or more tends to coagulate in brushes or roller brushes, making it difficult to use as a tool, so applying it can be done easily by following Patent No. 1280018 [Method of Coating Highly Concentrated Rubberized Asphalt Emulsion] . The order of application is to start from the rising part of the underfloor foundation and then spread it to the flat parts in order to form a continuous coating film. Rubber asphalt is usually used with the addition of only chlordane, but if it is necessary to set it quickly due to heavy construction work at the site, it may be used with silicofluoride compounds, etc. as shown in the 19582R Curing Waterproofing Method. Add a coagulant based on an amine compound.

After forming a moisture-proof and waterproof layer through the above process, if it is desired to protect the surface from walking damage during construction work and suck out the remaining moisture in the rubber asphalt, sprinkle about 10 fl of artificial lightweight aggregate or sand. By doing so, it is possible to obtain the above-mentioned purpose as well as the dew condensation prevention effect due to the cooling effect. A similar effect can also be obtained by laying asphalt felt instead of artificial lightweight aggregate.

3. Effect Termite in the soil has its exit to the outside blocked by the above termite-proof layer, and the foundation concrete is also coated with a seamless coating, so there is a sufficient route from the soil to reach the wood. is blocked by. Termites avoid the termiticide in the paint film, are unable to form termite trails to the outside, and are prevented from climbing into the structure from the soil. In addition, rubber asphalt acts as a binder that fixes chlordane and prevents it from flowing out and escaping, making it possible to maintain termite prevention effects over a long period of time.

At the same time, this layer prevents moisture in the soil, and since the overlapping parts, which have been a problem in the past, are integrated with rubber asphalt, there is no aggregation of water, thus preventing the growth of fungi such as Namida mushrooms, and ensuring perfect moisture resistance under the building floor. state.

1 Effect of the invention Example 1 Asphalt felt (JISA 6005) was applied to the subfloor of a wooden house, which was made evenly by scattering mountain sand on rough soil.
8 (1&g product) and 8. Coating stones and concrete foundation are applied with brushes and roller brushes treated with Patent No. 1280018R Highly Concentrated Rubberized Asphalt Emulsion Coating Method (trade name: Hull Coat), and then 1 to 1.5 kg/kg of asphalt is applied to the asphalt felt surface. The average film thickness after curing was 0.8 to 1.2.
11 Next, each side of A side and B side was divided into two parts, and one side was filled with the artificial lightweight aggregate (manufactured by Hanbe Mining Co., Ltd.).
Plate part perlite L) was uniformly spread to a thickness of about 16 gm.

Example 2 The aforementioned chlordane-added rubber asphalt was applied to the pile stones and foundation concrete, and then applied to and impregnated onto a non-woven fabric (trade name: Cranbon SG, manufactured by Kurashiki Boseki Co., Ltd.) laid on the subfloor surface. 8 on a part of the subfloor surface in advance before laying the nonwoven fabric.
The underlay was made of kg asphalt felt. For the rubber asphalt, a brush or roller brush that had been treated to prevent coagulation was used, and the overlapped portions of the nonwoven fabric were integrated to form a moisture-proof and insect-proof layer.

Example 3 Asphalt felt (8 & 9/roll product) was laid on the underside of the floor as a moisture-proofing and insect-proofing method for the finished part of the first floor of a concrete building with high-floor flooring, and a 65% emulsion of chlordane and organic phosphoric acid were used as a chlorine compound-based termiticide. Rubber asphalt containing 2% each of fenitrosilone solution as a termiticide was applied at a rate of 1.5 ktJ/77/cm to form a continuous moisture-proof and insect-proof layer with a film thickness of about 1.2 fl.

Example 4 In the same manner as in Examples 1 and 2, rubber asphalt was coated with Tokuko Sho 56-a! 0.5% of a mixture of sodium silicofluoride and polyamide, which is an amine compound, was added from various curing agents shown in 11352r Curing Waterproofing Method to promote coagulation of the rubber asphalt. With this method, the film was formed in about one hour after application, and was advantageous in terms of the work process and particularly in curing thick film parts.

Prevention of test wood treated with forticide installed under the floor treated according to Examples 1 to 4 and the same wood installed in untreated soil! After comparing the J rates, the termite prevention rate of the untreated category was 40~40 during the survey period of 8 months to 1 year and 6 months. The termite prevention rate of the treatment category according to the present invention was 100%, whereas it was 50%.
%, and there was no occurrence of fungi, confirming the effectiveness of the moisture-proofing effect.

Claims (4)

[Claims] (1) A highly concentrated rubber asphalt emulsion with a solid content of 80% or more by weight, to which an insect repellent such as an organochlorine or an organophosphate compound is added, is placed on the asphalt felt, fibrous sheet, or both on the subfloor surface. Moisture-proofing and insect-proofing method that is applied and layered. (2) The moisture-proofing and insect-proofing method according to claim 1, wherein a coagulant is added to the high-concentration rubber asphalt emulsion to promote layering. (3) The moisture-proofing and insect-proofing method according to claim 1, wherein asphalt felt is pressed onto the layered surface to absorb residual moisture in the layer and protect the layered surface from walking. (4) The moisture-proofing and insect-proofing method according to claim 1, wherein sand or artificial lightweight aggregate is sprinkled on the layered surface to absorb residual moisture in the layer and to protect the layered surface from walking.