KR100757501B1 - Waterproof sheet of tpo modified asphalt and construction method for waterproof using the same - Google Patents

Abstract

A TPO modified asphalt waterproof sheet and a method for a complex waterproof construction using the same are provided to reduce the construction time and the construction cost by obtaining waterproof sheet and waterproof coating structures through one construction work. A TPO modified asphalt waterproof sheet comprises a non-woven fabric(110) and a TPO modified asphalt which is coated on a top surface of the non-woven fabric(110). The non-woven fabric(110) includes glass fiber polyester. The glass fiber polyester has a tensile strength of about 8.2kgf/cm or more, an expansion coefficient of about 30% or more, and a dimensional stability of about ±1.0% or less. Sand(130) or talc is coated on a top surface of a coating layer(120) of the TPO modified asphalt.

Description

TPO modified asphalt waterproof sheet and composite waterproofing method using same {WATERPROOF SHEET OF TPO MODIFIED ASPHALT AND CONSTRUCTION METHOD FOR WATERPROOF USING THE SAME}

1 to 4 show an embodiment of the present invention,

1 is a cross-sectional view of a TPO modified asphalt waterproof sheet.

2 is a cross-sectional view of a first embodiment of a waterproof structure by the composite waterproof method.

3 is a cross-sectional view of a second embodiment of the waterproof structure by the composite waterproof method.

4 is a cross-sectional view for explaining a pressing step.

** Description of the symbols for the main parts of the drawings **

10: pressing roller 20: second pressing roller

100: TPO modified asphalt waterproof sheet 110: nonwoven fabric

120: coating layer of TPO-modified asphalt 130: sand

200: primer coating layer

300: reaction hardening asphalt coating waterproofing coating layer

400: finish

The present invention relates to the field of construction, and in particular, to a construction method for waterproofing a building and a waterproof sheet used therein.

The waterproofing method to prevent leakage from the floor, wall, and ceiling surface of a building can be roughly divided into a method of attaching a waterproof sheet (waterproof sheet) and a method of forming a coating film by applying a waterproof material (film waterproof). Can be.

In the case of waterproofing sheet, there is a problem of water leakage at joints between sheets. In the case of waterproofing of coating film, cracking occurs in the coating film when concrete is cracked. Excessive time and cost are required to form a predetermined thickness. There is a problem.

Therefore, in order to compensate for the disadvantages of both of them, a composite waterproof, which is a composite structure of sheet waterproofing and coating waterproofing, has been attempted.

As the material used for the composite waterproofing, the combination of a polymer-based or asphalt waterproof sheet and a coating film waterproofing material applied by a hot or cold method is most common.

However, the following problems have been pointed out in the conventional composite waterproof method.

Firstly, solvent-type or water-soluble asphalt coating waterproofing materials are generally used as materials for waterproofing coating films, which need to be applied several times in order to secure the thickness of coating films, resulting in a long curing time and a construction period, and consequently excessive construction costs. Is that it takes.

Second, since the waterproofing sheet can be attached after the waterproofing material is cured, the increase in the construction period and the construction cost is more prominent.

Third, when the thermal method (a method requiring heating for curing the coating waterproofing material) is applied, there is a high risk of fire.

The present invention has been made in order to solve the above problems, the time required for curing the coating waterproofing material is short, it is possible to obtain a structure of waterproofing and waterproofing the sheet by a single construction to reduce the construction period and construction cost The purpose of the present invention is to provide a TPO-modified asphalt waterproof sheet and a composite waterproof method using the same, which can prevent the risk of fire by applying the cold air method.

The present invention, in order to achieve the object as described above, nonwoven fabric 110; TPO-modified asphalt waterproof sheet 100, including; TPO-modified asphalt applied to the upper surface of the nonwoven fabric 110 is presented.

The nonwoven fabric 110 is preferably a long fiber polyester nonwoven fabric (110).

The long fiber polyester nonwoven fabric 110 preferably satisfies the tensile strength of 8.2kgf / cm or more, elongation 30% or more, dimensional change rate ± 1.0% or less.

Sand 130 or talc is preferably applied to the top surface of the coating layer 120 of the TPO-modified asphalt.

On the other hand, the present invention is another means for achieving the above object, the primer applying step of applying a primer on the surface that needs waterproof; A reactive curing asphalt coating waterproofing coating step of applying a reactive curing asphalt coating waterproofing material to the outside of the primer coating layer 200; Attaching the TPO-modified asphalt waterproof sheet for attaching the TPO-modified asphalt waterproof sheet 100 to the outside of the reactive curing asphalt coating waterproofing layer 300 by a cold air method; Presenting a composite waterproof method comprising a; finishing step of finishing the exterior of the TPO-modified asphalt waterproof sheet 100 by the finishing material 400.

The reaction hardening asphalt coating waterproofing material is preferably a mixture containing an emulsified asphalt, a prepolymer, a carbon dioxide scavenger.

The step of attaching the TPO-modified asphalt waterproof sheet is a step of unfolding the TPO-modified asphalt waterproof sheet 100 provided in a wound state and disposing on the outer surface of the reaction hardening asphalt coating waterproofing layer 300; It is preferable to include; a pressing step of pressing the outer surface of the disposed TPO-modified asphalt waterproof sheet 100 by the pressing roller 10.

Preferably, the TPO-modified asphalt waterproof sheet attaching step includes a flattening step by the second pressing roller 20 after the pressing step.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figure 1, TPO modified asphalt waterproof sheet 100 according to the present invention is basically, non-woven fabric 110; It is configured to include; TPO-modified asphalt applied to the upper surface of the nonwoven fabric 110.

Here, TPO-modified asphalt means asphalt modified by TPO synthetic resin.

TPO synthetic resin has a weight average molecular weight of about 1000 to 150000, and has one selected from amorphous poly--olefines (APAO), IPP & EPR polymer alloys, polyolefin elastomers (POEs), reactor thermoplastic olefine (RTPO), Ethene, Propene, It is formed of a copolymer or trimer of two or more materials selected from butene and ocene.

Applicant is entitled "Asphalt Composition and Manufacturing Method" regarding above TPO modified asphalt 2004.02.27. I applied for it and received registration (10-0609716).

Here, as a method for producing a TPO-modified asphalt, a process of mixing 40-50% of molten straight asphalt and 20-35% of TPO synthetic resin, and stirring the mixture for about 1 hour and 30 minutes while maintaining the mixture at 170-200 ° C to 8 µm or less. Process to make a uniform phase inversion of the filler, 15 ~ 30% of the filler and 0.1 ~ 0.4% of the stabilizer is quantitatively added at about 170 ~ 190 ℃ stirring process, uniformly dispersing the filler and stabilizer and then removing bubbles A method for producing by a process for obtaining a viscosity that is easy to work at about 155 to 180 ° C is disclosed.

When the TPO-modified asphalt is applied to the nonwoven fabric 110 to form and use the TPO-modified asphalt waterproof sheet 100, the following effects can be obtained.

First, in the case of constructing a composite waterproofing method using this, it is possible to attach the waterproof sheet even before the coating waterproofing is completely cured, it is possible to reduce the construction period and construction cost.

Second, since the waterproof sheet is attached by the cold air method, the risk of fire can be prevented.

The nonwoven fabric 110 may be implemented by a material such as polyethylene, polypropylene, glass fiber, etc., which is formed by a long fiber polyester material is most excellent in terms of strength, durability and other physical properties.

The long fiber polyester nonwoven fabric 110 is preferably to satisfy the tensile strength of 8.2kgf / cm or more, elongation 30% or more, dimensional change rate ± 1.0% or less (KS F 4917 quality standards).

When air is delayed due to weather or other site conditions during waterproof construction, in order to protect the TPO-modified asphalt, it is preferable to apply sand 130 or talc to the top surface of the coating layer 120 of the TPO-modified asphalt.

Such a structure may also simultaneously serve to prevent a phenomenon in which contact surfaces of the waterproof sheet stick to each other when the waterproof sheet is wound and stored.

On the other hand, referring to Figure 2 below, when explaining the composite waterproof method applying the TPO modified asphalt waterproof sheet 100 as follows.

The composite waterproof method according to the present invention is basically a primer coating step of applying a primer to the surface that needs waterproofing; Reaction hardening asphalt coating waterproofing coating step of applying a reaction hardening asphalt coating waterproofing material to the outside of the primer coating layer 200; TPO-modified asphalt waterproof sheet attaching step of attaching the TPO-modified asphalt waterproof sheet 100 to the outside of the reaction hardening asphalt coating waterproofing layer 300 by a cold air method; It is configured to include; the finishing step of finishing the exterior of the TPO-modified asphalt waterproof sheet 100 by the finishing material 400.

2 is a waterproof structure when the above composite waterproofing method is implemented on the bottom surface, Figure 3 is a waterproof structure when implemented on the wall surface, pus mortar (2, 4) on the outer surface of the foundation concrete (1,3) This construction is carried out, and a primer coating step or the like is constructed on the outer surface thereof.

Finishing material 400 refers to a protective mortar, a protective brick, a sheet protective material and a finishing concrete poured on the outside in the case of non-exposed composite waterproofing, and in the case of an exposed composite waterproofing, a top coat made of urethane, acrylic latex, acrylic resin, etc. Means the material.

Composite waterproof method according to the present invention having the above configuration is to obtain the following effects.

First, since the waterproof structure can be completed by one-time construction by the combination of the reaction hardening asphalt coating waterproofing material and the TPO-modified asphalt waterproof sheet, it is possible to shorten the construction period and reduce the construction cost.

Second, the waterproof performance is excellent because the double waterproof effect can be obtained by the composite structure.

Third, there is no risk of fire and environment-friendly because the cold air method is applied.

Fourth, since the adhesive strength of the waterproof sheet and the waterproofing film is excellent, the overall stable structure can be obtained.

Fifth, since about one day after construction is possible to proceed with the subsequent work, it is possible to shorten the air.

Sixth, because the tensile strength, elongation, etc. of the waterproofing material is excellent, it can cope with the minute crack of the structure.

The reaction hardening asphalt coating waterproofing material is preferably composed of emulsified asphalt, prepolymer, carbon dioxide scavenger (scavenger).

When only asphalt emulsion is used as the waterproofing material, as the asphalt is deteriorated by ultraviolet rays or rain, there arises a problem that cracking occurs in the coating film together with the cracking of the base concrete.

When the prepolymer is mixed, it reacts with water in the asphalt emulsion to form a crosslinked polyurethane resin, and then integrates with asphalt to form a modified asphalt coating material having abundant flexibility. You can prevent it.

The carbon dioxide scavenger absorbs carbon dioxide generated by the reaction of isocyanate groups with water to prevent foaming of the cured product.

The step of attaching the TPO-modified asphalt waterproof sheet may be made by manpower, but as shown in FIG. 4, the TPO-modified asphalt waterproof sheet 100 which is provided in a wound state is unfolded to form a reactive-cured asphalt coating waterproofing layer 300. After arranging on the outer surface, it is preferable that the outer surface of the disposed TPO-modified asphalt waterproof sheet 100 is preferably carried out by a process of pressing by a pressing roller 10 which is a separate equipment.

On the other hand, if the outer surface of the foundation concrete is not flat, it may be difficult to obtain a flat surface by performing only the pressing step.

Therefore, after the above pressing step, it is more preferable to perform a separate flattening operation by the secondary pressing roller 20.

Waterproof sheet 100 is made of a suitable size for storage and construction, when attached to a large area of the bottom surface, wall, etc., when the two overlapping the waterproof sheet 100 is formed, this area is for leakage Because it is a weak point, it requires additional reinforcement.

Accordingly, the reaction cured asphalt coating waterproofing material is applied to the outside of the overlapping portion of the TPO-modified asphalt waterproofing sheet 100 secondly, and the sheet made of a material such as PE or PP foam is applied to the exterior of the secondary reactive curing asphalt coating waterproofing material coating layer. It is preferable to attach a protective material.

The reaction hardening asphalt coating waterproofing material used in the waterproofing method according to the present invention is not only excellent in waterproof performance but also excellent in adhesiveness, so that the bonding of the upper sheet protective material and the waterproof sheet 100 to each other, so as to obtain an excellent waterproof structure as a whole. It is.

Since the above has been described only with respect to some of the preferred embodiments that can be implemented by the present invention, the scope of the present invention, as is well known, should not be construed as limited to the above embodiments, the present invention described above It will be said that both the technical idea and the technical idea which together with the base are included in the scope of the present invention.

The present invention can shorten the time required for curing the coating waterproofing material, can obtain the structure of waterproofing film and sheet waterproofing by one-time construction can reduce the construction period and construction cost, the risk of fire by the application of cold construction method To prevent it.

Claims (9)

Nonwoven fabric 110; TPO modified asphalt coated on the upper surface of the nonwoven fabric 110; TPO modified asphalt waterproof sheet 100 including. The method of claim 1, The nonwoven fabric 110 is TPO modified asphalt waterproof sheet 100, characterized in that the long fiber polyester non-woven fabric (110). The method of claim 2, The long fiber polyester nonwoven fabric 110 is TPO modified asphalt waterproof sheet (100), characterized in that it satisfies the tensile strength of 8.2kgf / cm or more, elongation 30% or more, dimensional change ± 1.0% or less. The method of claim 1, TPO-modified asphalt waterproof sheet 100, characterized in that sand (130) or talc (talc) is applied to the upper surface of the coating layer 120 of the TPO-modified asphalt. A primer coating step of applying a primer to a surface requiring waterproofing; Reactive hardening asphalt coating waterproofing coating step of applying a reactive hardening asphalt coating waterproofing material to the outside of the primer coating layer 200; A TPO-modified asphalt waterproof sheet attaching step of attaching the TPO-modified asphalt waterproof sheet (100) of any one of claims 1 to 4 on the outside of the reaction hardening asphalt coating waterproofing coating layer (300) by a cold air method; Finishing step of finishing the outside of the TPO-modified asphalt waterproof sheet 100 by the finishing material 400; Combined waterproof method. The method of claim 5, The reaction hardening asphalt coating waterproofing material Composite waterproofing method characterized in that the mixture comprising an emulsified asphalt, prepolymer, carbon dioxide scavenger (scavenger). The method of claim 5, The TPO modified asphalt waterproof sheet attaching step Unfolding the TPO-modified asphalt waterproof sheet 100 provided in a wound state and disposing the TPO-modified asphalt waterproof sheet 100 on an outer surface of the reactive curing asphalt coating waterproofing layer 300; A pressing step of pressing the outer surface of the disposed TPO-modified asphalt waterproof sheet 100 by a pressing roller 10; Composite waterproof method comprising the. The method of claim 7, wherein The TPO modified asphalt waterproof sheet attaching step After the pressing step, the composite waterproof method comprising a flattening step by the secondary pressing roller (20). The method of claim 5, After attaching the TPO-modified asphalt waterproof sheet, before the finishing step, A secondary reaction hardening asphalt coating waterproofing coating step of applying the reaction hardening asphalt coating waterproofing material to the outside of the overlapping portion of the TPO-modified asphalt waterproof sheet 100 in a second manner; A sheet protective material attaching step of attaching a sheet protective material to the outside of the secondary reaction hardening asphalt coating waterproofing coating layer; Composite waterproof method comprising the.

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