KR200344605Y1 - Ultra Light-weighted Concrete Panel with Fireproof Performance for Wall - Google Patents

Abstract

The present invention provides an ultralight concrete wall panel in which an inorganic reinforcing plate is integrally combined with an ultralight concrete plate made of expanded perlite, cement, and an adhesive strengthening agent. The panel of the present invention has the advantage of wide range of use such as cost saving when constructing a high-rise building because it is easy to work and the load on the building is very light, and it has excellent fire resistance and excellent at minimum wall thickness. Fire resistance effect can be achieved. In addition, the panel of the present invention is prefabricated, and is easy to install in the field, and it is harmless to human body and nature by using environment-friendly materials and raw materials.

Description

Ultra Light-weighted Concrete Panel with Fireproof Performance for Wall}

The present invention provides an ultralight concrete wall panel in which an inorganic reinforcing plate is integrally combined with an ultralight concrete plate made of expanded perlite, cement, and an adhesive strengthening agent.

Conventional techniques for non-bearing wall partition construction include wet masonry to build walls by stacking ordinary bricks or lightweight foam concrete (ALC) blocks, but the trend is gradually converted to dry methods that can reduce air shortening and building load as much as possible. to be.

As a dry method, there is a method of using fireproof gypsum board as a main material and additionally using other subsidiary materials as a fireproof and soundproof partition of an internal non-bearing wall of a building. However, gypsum board has weak water resistance and low impact strength due to its physical properties. Therefore, the gypsum board partition is easy to be damaged by the impact after completion of the wall construction has a problem that the bearing capacity of the nail or screw falls. In addition, the use of glass or rock wool to supplement the insulation and sound insulation in the middle of the wall during the site construction, there is a problem that the worker is placed in a harmful working environment by the dust of the glass or rock wool.

On the other hand, in addition to the fireproof gypsum board, there are some products that require easy construction at the site by pre-fabricating cement partitions for fire and sound insulation in factories. However, it is lighter than the masonry method, but is still made of cement concrete, it is still heavier than the gypsum board partition, there is a problem that workability and economic efficiency is inferior.

The present inventors have diligently researched to solve the above problems and to find a wall material complementary to workability, functionality and economy, and as a result, a panel in which an incombustible inorganic reinforcing plate is integrally combined with a concrete plate manufactured with expanded perlite as a main component is used for the wall. It has been confirmed that it is not only lightweight but also has excellent fire resistance as it maintains its strength as it is also manufactured in the factory and can be easily assembled in the field so that workability is improved, air is shortened, and it is eco-friendly. To complete the present invention.

Accordingly, an object of the present invention is to provide a panel for ultralight concrete walls in which an inorganic reinforcing plate is integrally coupled to an ultralight concrete plate made of expanded perlite, cement, and an adhesive strengthening agent.

Other objects and advantages of the present invention will become apparent from the following examples, claims, and drawings.

1 is a perspective view showing a panel for ultralight concrete walls having a fire resistance performance of the present invention.

Figure 2 is a perspective view showing a double wall composed of a panel of the present invention.

Figure 3 is a plan sectional view showing the hole for the electrical installation and lightweight applied to the panel of the present invention.

<Description of protection of main parts of drawing>

1. Ultra lightweight concrete plate

2a, 2b. Mineral Reinforcement Plate

3. Hole

4. Coupling protrusion

5. Coupling groove

6a, 6b. Upper runner

7a, 7b. Lower runner

The present invention provides a panel for an ultra-light concrete wall, in which an inorganic reinforcing plate is integrally coupled to an ultra-light concrete plate (1) manufactured using expanded perlite, cement, and an adhesive strengthening agent.

Concrete panel of the present invention is characterized by having an ultra-light and fire-resistant using expanded perlite as aggregate.

The expanded perlite is a porous lightweight aggregate having a specific gravity of 0.04-0.2 and a porosity of 90%. By using the expanded perlite in the manufacture of the panel of the present invention, an ultralight panel can be obtained.

On the other hand, in the present specification, the term "panel" refers to a structure in the form of the reinforcing plate is bonded to the plate, the term "plate" means the rest of the panel except the reinforcing plate.

According to a preferred embodiment of the present invention, the volume ratio of expanded perlite to cement used in the production of the concrete plate is preferably 3: 1-6: 1, more preferably 4: 1-5: 1 and most preferably About 4: 1.

If the volume ratio is less than 3: 1, since a relatively large amount of cement is used, there is a problem that a lightweight panel cannot be obtained. If the volume ratio is greater than 6: 1, there is a problem in that a plate is not formed due to a lack of bonding strength of aggregate. .

According to a preferred embodiment of the present invention, when the concrete plate of the present invention has a thickness of 41 mm, the weight is 13-22 kg per unit square meter, preferably 13-20 kg and more preferably 13-18 kg. . Therefore, by using the plate body of the present invention it is possible to manufacture an ultralight panel. This ultra-lightweight was not able to achieve in the conventional wall plate, maximizing the applicability that the plate of the present invention is used for wall applications.

According to a preferred embodiment of the present invention, the cement includes hardened cements such as portland cement, alumina cement, expanded cement and acid phosphate cement, most preferably portland cement. Usually, crude steel, jet, medium heat and sulfate resistant portland cement can be used, most preferably crude steel portland cement. In the case of using the crude steel cement according to the most preferred embodiment of the present invention is possible to cure within a short time without the addition of a separate curing agent, the time to manufacture the panel of the present invention is greatly shortened.

The ultra-light concrete plate of the present invention uses a small amount of adhesive strengthening agent to strengthen the adhesion. Dispersing the adhesion strengthening agent in 3-7% by volume in water approximately 0.8-1.4 times the volume of the cement used, and blended in small portions by spraying to the expanded perlite and cement mixture.

According to the present invention, if the adhesive strengthening agent is not added, a larger amount of cement must be added to form a plate, and as a result, the weight of the panel increases. When the adhesion enhancer is less than 3% by volume, the adhesion efficiency is lowered, and when more than 7% by volume, the curing period of the cement and the expanded perlite mixture is extended, the fish phase is dropped, and when the heat is exceeded the fire resistance of the panel of the present invention is burned. In addition, small amounts of harmful gases may be produced.

According to a preferred embodiment of the present invention, the adhesion enhancer may be selected from the group consisting of synthetic rubber adhesives, EVA (ethylene vinyl acetate) adhesives and acrylic adhesives, preferably synthetic rubber adhesives, most preferably modified rubber Latex (SBR latex).

The amount of water used to make concrete is 0.8-1.4 times the volume of cement used. If the volume ratio of water is less than 0.8 with respect to cement, there is a problem in that the plate cannot be formed because the mixing of cement and the expanded perlite is not good. Problems with formation and longer curing period.

Preferred panel of the present invention is characterized in that the non-combustible inorganic reinforcing plates (2a, 2b) on both sides of the concrete plate made of the above expanded perlite, cement and adhesive strengthening agent.

The plate produced according to the volume ratio of the present invention is insufficient in strength to be used immediately for the wall, etc., by combining the inorganic reinforcing plate to the plate to supplement the strength to obtain a panel of the present invention that can be used in the wall, such as ultra-lightweight.

According to a preferred embodiment of the present invention, the inorganic reinforcing plates (2a, 2b) of the present invention can be selected from the group consisting of inorganic fiber reinforced plate, magnesium plate, calcium silicate board and asbestos cement plate, most preferably inorganic fiber reinforced plate . On the other hand, the inorganic reinforcement plate of the present invention is bonded to the concrete plate without additional reinforcing plate adhesive additives, because the cement used in the plate to be bonded to the plate.

The panel of the present invention is characterized in that it can be used for walls. On the other hand, in the case of concrete using expanded perlite as aggregate, it is not easy to maintain strength enough to form a plate while maintaining ultralightness. The inventors have found a panel that can be used for walls that require a certain strength by finding the proper mixing ratio of expanded perlite, cement and adhesive strengthening agent that can form a plate while maintaining ultra-light weight, and combining inorganic reinforcing plates integrally. . Moreover, the panel of the present invention is not only ultra-lightweight but also has excellent fire resistance, so it can be used as an efficient wall control.

Referring to the following examples of the present invention, a method for producing a panel of the present invention is described as follows: mixing expanded perlite and cement in an appropriate volume ratio and mixing in a mixer so that the cement can be evenly applied to the particles of the expanded perlite. . The mortar is prepared by dispersing the adhesion enhancer in an appropriate volume% of water in an appropriate ratio with respect to the used cement volume, and blending the expansion perlite and cement mixture in small amounts by spraying. The non-combustible inorganic reinforcement plate is fixed on both sides of the standard mold and the mortar prepared above is injected. In order to keep the non-combustible inorganic reinforcing plate and mortar in close contact and to fill the mortar well, vibration is applied for several tens of seconds. Then, it is dried in a drying room and demolded.

The expanded perlite used in the present invention is not only a lightweight aggregate, but also has a feature of melting temperature of 1,000-1,200 ° C. The inventors used the expanded perlite as an aggregate and manufactured a plate using a nonflammable inorganic cement, and maximized the flame retardant effect by combining an inorganic reinforcing plate to the outside of the plate. Therefore, the panel of the present invention has excellent fire resistance performance. In addition, the panel of the present invention does not generate harmful gases because a very small amount of organic adhesive is used. Meanwhile, in the present specification, "fireproof" is a term expressing resistance to fire, and it is understood by those skilled in the art as different from "Insulation" used in the sense of suppressing heat transfer. In other words, excellent heat insulating properties are not necessarily excellent in fire resistance because of excellent performance in distinguishing heat insulating properties and fire resistance. For example, styrofoam has excellent heat insulation but very low fire resistance.

According to a preferred embodiment of the present invention, the panel of the present invention may have a plurality of holes (3) in the central portion for the purpose of electrical installation and light weight. According to a preferred embodiment of the present invention, the panel of the present invention has coupling protrusions 4 and coupling grooves 5 at both sides for coupling purposes between the panels. According to a preferred embodiment of the present invention, the panel of the present invention has the configuration shown in FIG.

According to a preferred embodiment of the present invention, the panel of the present invention is used for the production of double wall walls. An example of a double wall according to this embodiment is shown in FIG. 2. Referring to the drawings, two ultra-light concretes are provided in two rows of lower runners 7a and 7b fixed to the floor of the room and two rows of upper runners 6a and 6b fixed to the ceiling at the vertical portion of the lower runner. Walls are made by assembling the panels horizontally. The two upper runners (or lower runners) are parallel to each other and spaced at regular intervals, and the separation distance varies depending on the embodiment.

The panel may be empty, but in some cases, glass wool, rock wool, styrofoam or perlite board may be filled for the purpose of filling, insulation and sound insulation, and it is preferable to use a perlite board which is harmless to the human body.

The panel of the present invention, which is not only lightweight but also has excellent fireproof performance, can obtain excellent fireproof effect even with the wall thickness of about 75 mm, and because of its ultra-light weight, it is easy to work and the load on the building is reduced, so the use range is widened. have. In addition, standardized production is possible in the factory, so it is easy to control quality and can be easily assembled on site. Moreover, it is an environmentally friendly product because it uses materials and raw materials that are harmless to the human body.

The ultra-light concrete panel with fire resistance of the present invention can be used as a non-bearing wall inside or outside of a building or as a partition wall of a factory facility, a firewall, or a double wall of an underground parking lot of a building.

Hereinafter, the present invention will be described in more detail with reference to Examples. These embodiments are only intended to describe the present invention in more detail, and the scope of the present invention is not limited by these embodiments according to the gist of the present invention to those skilled in the art. Will be self-evident.

Example 1

Expansion Perlite ("Chiang Wafer Light" Shanghai Chiang Wei Insulation Co., Ltd.) and crude steel portland cement (Ssangyong, South Korea) are blended in a volume ratio of 4 to 1, and the mixer can be applied evenly to the particles of the expanded perlite. Mixed in. Mortar was prepared by dispersing the modified rubber latex at 5% by volume in water having a volume of 1-1.2 times the volume of the cement used, and blending the expanded perlite and cement mixture in small amounts by spraying. The nonflammable inorganic fiber reinforced plate was fixed on both sides of a standardized mold and the mortar prepared above was injected. In order to closely adhere the inorganic fiber reinforcement plate and mortar, and to fill the mortar well, a vibration machine was applied for about 20-30 seconds. Then, after drying for about 24 hours in a drying chamber of about 50 ℃-60 ℃ demolding.

Experimental Example 1: Weighing

The weight of the panel manufactured by the method of Example 1 was measured. The panel used for the test was 1 m in width and length, 50 mm in thickness, one side of the inorganic fiber reinforced board was 4.5 mm and the weight of one side of the reinforced board was 7 kg. The weight of the panel was 30 kg. Therefore, the weight of the plate except the weight of the inorganic fiber reinforced plate was 16 kg.

Experimental Example 2: Fire Resistance Test

The fire resistance performance test of the panel manufactured by the method of Example 1 was carried out. The panel used for the test was 1 m in width and length, 75 mm in thickness, and the thickness of one side of the inorganic fiber reinforced board was 4.5 mm. The torch was heated using a torch and the flame temperature was 600 ° C. Even after heating for 2 hours, the temperature on the back side of the member did not rise above the limit temperature, no flame or hot gas passed, and no flame was generated. Therefore, it was confirmed that the panel of the present invention has excellent flame resistance, that is, excellent fire resistance.

As described in detail above, the present invention provides a panel for ultralight concrete walls, in which an inorganic reinforcement plate is integrally coupled to an ultralight concrete plate made of expanded perlite, cement, and an adhesive strengthening agent. The panel of the present invention has the advantage of wide range of use, such as super light weight, high workability and low load on the building, which reduces the construction cost when constructing high-rise buildings, and has excellent fire resistance and excellent wall thickness. Fire resistance effect can be achieved. In addition, the panel of the present invention is prefabricated, and is easy to install in the field, and it is harmless to human body and nature by using environment-friendly materials and raw materials.

Claims (8)

Ultra-lightweight concrete wall panel in which inorganic reinforcing plate is integrally combined with ultra-lightweight concrete plate made of expanded perlite, cement, and adhesive strengthening agent. The method of claim 1, wherein the volume ratio of the expanded perlite and cement is 3: 1-6: 1, the adhesion strengthening agent is added after dispersing in 4-7% by volume of 0.8-1.4 times the volume of the cement used water. Ultra-lightweight concrete wall panel, characterized in that. The panel of claim 1 or 2, wherein the adhesive strengthening agent is selected from the group consisting of synthetic rubber adhesives, EVA adhesives, and acrylic adhesives. The panel of claim 1, wherein the inorganic reinforcing plate is selected from the group consisting of inorganic fiber reinforcing plates, magnesium plates, calcium silicate boards, and asbestos cement plates. The panel of claim 1, wherein the panel is for walls. The panel of claim 1, wherein the panel has fire resistance. The panel of claim 1, wherein the panel has a plurality of holes in the central portion for electrical installation and light weight. The panel of claim 1, wherein the concrete plate has a weight of 13-22 kg per square meter when the concrete plate has a thickness of 41 mm.