KR0166114B1 - Water-proofing concrete composition - Google Patents

Abstract

The present invention relates to a concrete waterproofing material for waterproofing the top or basement outer walls of the building structure or the parking lot.

It completely prevents the ingress of water and moisture, is not affected by alkali or acidic substances, and has high tensile strength, elasticity and weather resistance, is not easily decomposed in concrete, has excellent resistance to concrete cracks, and forms a protective film. Rubberized asphalt bitumen system with cut back asphalt (CUT BAG ASPHALT) as the main raw material and rubber products and strong adhesive system to prevent semi-permanent protection by suppressing the evaporation of oil from HYDRO MASTIC as much as possible. HYDRO MASTIC and an impervious fabric sheet (FABROID SHEET) of the combination to provide a waterproofing film and sheet.

Description

Concrete repellent

The present invention relates to a concrete waterproofing material for waterproofing the roof of a building or the upper part of a parking lot or an underground exterior wall (cooperative), and more specifically, completely prevents the penetration of water and moisture, as well as no influence of alkali or acidic substances. It is not intended to provide concrete waterproofing material that can protect semi-permanently by preventing oil evaporation of asphalt mastic coating waterproofing material by maximizing resistance to concrete cracks and forming a protective film.

In general, concrete waterproofing materials for the purpose of waterproofing the roof of a building structure or the upper part of the parking lot or the basement outer wall (cooperative ward) are synthetic polymer organic materials based on solid brown asphalt, asphalt compound, asphalt felt and asphalt roofing obtained from petrochemical series. Waterproofing materials made of fibers are used, and the asphalt 8-layer waterproofing method using this is a waterproofing method that has been carried out for decades. This is a layered construction, which has a relatively thick coating of the waterproofing layer, which is excellent in waterproofing effect and oily. On the other hand, because the asphalt heating is required and the layer construction is complicated, the process is complicated, special construction technology is required, labor costs are high, the risk of work is high, the environmental pollution problem is serious, and the temperature change is sensitive, so that the crack Easy to produce, This discovery is difficult considering the rainy season construction period there was a disadvantage that the air longer.

Another waterproofing agent has been proposed as a sheet waterproofing agent (ROLL) which is made of adhesive or molded rubberized asphalt by mixing synthetic polymer compound and asphalt with a cloth or PP nonwoven fabric as a center material. This is because the construction method is simple and has the effect of shortening the air and has some flexibility in the occurrence of concrete cracks.However, many joints have many joints, so it is difficult to find defects and repair costs are high. In addition to the need for a certain working space for external work, there is a disadvantage in that the waterproofing construction must be performed in parallel when the retaining wall is waterproofed.

On the other hand, the tar urethane waterproofing method using a coating waterproof material made of an elastic rubber-like flexible coating film formed by mixing a polyurethane resin, which is an organic polymer material, and refined tar (TAR), has been used, but it is resistant to concrete cracks and has no joints. It has the advantages of excellent waterproof effect, easy to find defects, and easy to repair due to resistance to cracks and vibrations, while it is expensive to construct and requires precautions when installing because the main hardener of waterproof material is classified. It is harmful to human body and may cause fire.

Moreover, all of the concrete waterproofing materials as described above have a problem in that a waterproof protective layer using a protective mortar is absolutely necessary and must be ground-treated by pus mortar after complete drying.

In order to solve the above conventional drawbacks, the present applicant aims to waterproof the roof of the building or the upper part of the parking lot or the basement outer wall (cooperative), but also prevents the penetration of water and moisture, It is not affected at all, and has high tensile strength, elasticity and durability, it is not easily disintegrated in concrete, has excellent resistance to concrete cracks, and forms a protective film to prevent oil evaporation of asphalt mastic coating waterproofing material as much as possible. The purpose is to provide a concrete waterproofing material.

In order to achieve the above object, the present invention is an asphalted asphalt bitumen obtained by using asphalt compound as a main raw material, gelated by adding one of synthetic rubber adhesives, isobutylene and polyisobutylene synthetic resin, and natural mineral and cellulose inorganic wheeler. It is characterized by forming a waterproofing material which combines an asphalt-based asphalt mastic coating waterproofing material and an impervious fabric sheet (FABROID SHEET).

Here, the pebroid sheet is composed of a woven sheet formed of one of polypropylene and polyethylene as a main component of density 8 目 / 8 目 -15 目 / 15 目 (weft / tilt: woven fabric 1000 ~ 2000 DENIER).

Another feature is a thin coating of polypropylene or polyethylene having a thickness of 20-100μ on the fabric surface of the woven sheet formed of polypropylene (POLYPROPYLENE or PP) and then laminated polypropylene film or polyethylene film on the front surface ( LAMINATIHG) can be used as a waterproof sheet, mastic waterproof and double waterproof, and concrete crack protection.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a concrete waterproofing material according to the present invention will be described in detail as follows.

In the present invention, cutback asphalt (CUTBACK ASPHALT) and BRONW asphalt (BLOWW ASPHALT) as the main raw material, a high-elasticity and adhesive strength rubber products (RUBBER) and special adhesives such as a special FILLER gelled bituminous asphalt It is characterized by the fact that it can be used as a waterproof sheet, a mastic waterproof protective material and a double waterproofing material, and a concrete crack protection material by forming a double waterproofing agent combining a mastic coating waterproofing material and an impermeable pebroid sheet (FABROID SHEET).

The bituminous based waterproofing material of the waterproofing material of the present invention contains the following components.

1) Asphalt Compound

2) Synthetic Rubber adhesives

3) Asbestos fibers (Modified cellulose fibers)

4) Poly butene

5) Zinc Stearate (Zinc-Stearate)

6) Thinner

7) Other additives (dispersant, antioxidant, plasticizer, etc.)

The main raw material composition ratio of the bituminous waterproofing material of the present invention is as follows.

The physical properties of the bituminous waterproofing material used in the present invention, that is, mastic (MASTIC), are shown in Table 1.

Mastic, which is a bituminous waterproofing material of the present invention, is prepared as follows.

Cut-back asphalt and synthetic rubber adhesive solution Polybutene and other liquid state is mixed first, and then stirred for 30 to 60 minutes to mix completely.

After the raw material mixing process, zinc stearate in powder form and mineral fiber powder are gradually added, and the mixture is stirred for 30 to 60 minutes to maintain a constant viscosity and mixing state of the upper and lower portions of the mixing vessel, thereby producing a mastic in a hang state.

And the components and specifications of the pebroid sheet (aka POLYPROPYLENE SHEET) used in the present invention are as follows.

; Main ingredient POLYPROPYLENE 100%

; Density: 8 目 / 8 目-15 目 / 15 目 (Weft / Inclined)

; DENIER: 1,000-2,000

; Fabric skin coating and laminated material

The bitumen-based asphalt mastic coating waterproofing material used in the present invention has strong adhesion to all substrates such as concrete, stone, wood, and metal surfaces, and has excellent elasticity and flexibility, so that the mastic may be cracked or cracked in the matrix even if it is not completely cured. It penetrates into the cracks to form a seamless, waterproof layer that prevents the penetration of water and moisture, and does not easily tear or break without being affected by alkali or acidic substances.

In addition, the impermeable sheet, which is an impermeable sheet combined with the mastic, has a high tensile strength and maintains flexibility at -30 ° C, thereby preventing corrosion.

The waterproofing material as in the present invention prevents the penetration of water and moisture, is not easily torn or broken without being affected by alkali or acidic substances, and has excellent flexibility in sheets and mastic, so there is no abnormality even when folded over 90 °. Therefore, the construction of the seat joint is easy, and in particular, the construction site is difficult to be easily installed in the advantage, and the surface of the base to be waterproofed can be ground even in a somewhat wet state that is not completely dry.

When you want to waterproof using the concrete waterproofing material of the present invention having such a configuration, first make the surface of the mother to be waterproofed if possible. At this time, it is desirable to treat the wires or nails so as not to protrude. When reinforcing parts such as drain, inner and outer corners, pipe connecting parts, etc.

Then apply the mastic application and apply the sheet, spreading the mastic evenly with the width of the pebroid sheet from low to high with the toothed trowel, covering the sheet on it, and spreading the mastic using the roller. Press evenly.

When applying the next mastic to cover another sheet, use a serrated trowel to apply a thin layer of mastic to the overlapping part of the sheet that is laid down first, and gently press the roller on the overlapping part of the sheet to spread the mastic of the overlapping part. And the top sheet can be glued together. At this time, the overlap length of the sheet is preferably about 10cm, and if you apply too much mastic to the overlapping portion is pushed out of the overlapping portion is messy, it is preferable to apply only an appropriate amount.

The corners of the vertical wall should be attached with the bottom sheet about 10 cm up to the vertical wall, and the sheets coming down from the vertical wall down about 10 cm horizontally so as to be doubled. If not cut to the top of the vertical wall, at least 30 cm high 1 Make a cm x 1 cm groove, apply a mastic into it, and fold the sheet.

On the other hand, when attaching a sheet to the wall, it is better to spread it horizontally from the bottom, and then stick it up from the bottom.The parapet part is filled by stacking the protective bricks, and in the case of waterproofing the outer wall (underground), the protective bricks are piled up again. Fill it with a little dirt.

In addition, the present invention, if the surface state of the concrete slab is flat, the asphalt waterproof base surface can be applied immediately without mastic mortar or pus mortar mastic application, and after the construction of the sheet can continue to press concrete construction significantly shortened construction period There is an advantage to this.

The results of requesting a test from the Korea Society for Emulsification Testing for the embodiments as described above are as follows.

As a result of applying asphalt mastic to 2-3mm according to the strength of concrete (200, 300) and combining sheets, the flowability, peeling, cracking and wrinkle phenomenon were tested step by step from -10 ℃ to 130 ℃. The flow, peeling, cracking, and wrinkling were not observed. The leaks were not confirmed when the cracks were randomly formed in the concrete and the primary and secondary leaks were checked.

In the concrete crack state test, no peeling, lifting or cracking was observed.

Also, in the leakage test after mortar casting, there were no cracks and cracks, which were tested by strength and temperature, and there was no leak. In the cold test (-60 ℃, -60 ℃), the waterproofing material combining the mastic and the sheet Comparing and mastic showed that there was no stretching.

In the chemical resistance test, the weight change rate after immersion in MgSO ₄ , 5% solution for 5 days was 0.08% and the weight change rate after immersion in CaCl ₂ , 3% solution for 3 days was 0.09%. It can be seen that the product.

As described above, the present invention is a rubber waterproofing asphalt bitumen-based coating waterproofing material in which the concrete waterproofing material for waterproofing the roof of the building or the upper part of the parking lot or the basement outer wall (cooperative) is made of asphalt compound and rubber products and strong adhesives are added. It is a coating film and sheet double waterproofing material combined with and impermeable pebroid sheet, which completely prevents the penetration of water and moisture, and is not affected by alkali or acidic materials, and has high tensile strength, elasticity and weather resistance. It does not decompose and is excellent in resistance to concrete cracks, and it is a very useful invention having the effect and effect of semipermanent protection by forming a protective film to suppress the evaporation of the oil of the coating waterproofing as much as possible.

In addition, according to the present invention, by combining the gel rubberized asphalt bitumen coating material and the impermeable woven sheet to perform the first and second waterproofing, it is possible to obtain the double waterproof effect of the coating film and the sheet, and Even if the gel-like waterproofing material does not completely cure and forms a flexible coating waterproofing layer, even if the sharp part of the wire mesh breaks the woven sheet during the waterproofing concrete pressing and wire mesh laying operation, the gel-like mastic will By covering the pointed area, the breakage of the coating waterproof layer is prevented, and thus the semi-permanent waterproof effect can be obtained without the need for the waterproof layer protection mortar.

1 is an example of the case where the concrete waterproofing material according to the present invention is applied to the roof waterproofing of buildings.

2 is an example of the case where the concrete waterproofing material according to the present invention is applied to waterproofing vertical walls of buildings.

Figure 3 is an example of the case of applying the concrete waterproofing material according to the invention to the waterproofing of the reinforced construction site of the building.

Figure 4 is an example of the case of constructing the concrete waterproofing material according to the invention on the upper part of the underground parking lot.

5 is an example of the case when the concrete waterproofing material according to the present invention to the waterproofing of the basement outer wall.

Claims (4)

Asphalt mastic coating waterproofing material of rubberized asphalt bitumen type which is made into an asphalt compound as a main raw material, and is gelled by adding one of a synthetic rubber adhesive, isobutylene and polyisobutylene synthetic resin, and natural mineral and cellulose inorganic filament; And a woven sheet having a density of 8 目 / 8 目 -15 目 / 15 目 (weft / inclination), woven fabric 1000 ~ 2000 denier with one of polypropylene and polyethylene as the main components on the asphalt mastic coating waterproofing material. Concrete waterproofing material with a double waterproofing layer. The concrete waterproof material according to claim 1, wherein one of the polypropylene and polyethylene layers is coated on the woven sheet with a thickness of 20 to 100 µ. The concrete waterproofing material according to claim 1, wherein a laminate of one of a polypropylene film and a polyethylene film is laminated on the woven sheet. The concrete waterproofing material according to claim 1, wherein after the one of the polypropylene and polyethylene layers is coated on the woven sheet, one of the polypropylene film and the polyethylene film is laminated on its front surface.