Method for manufacturing precast panel using waste clothing

Abstract

Disclosed is a method for manufacturing a precast panel using waste clothing. The method for manufacturing a precast panel using waste clothing according to an embodiment of the present invention comprises the steps of: collecting and shredding waste clothing; stirring the shredded waste clothing together with powdered cement, carbon fibers, silicon carbide, silica powder, and an inorganic binder to form a concrete admixture; molding the formed concrete admixture using a predetermined mold; drying the molded concrete admixture at a predetermined temperature to form a concrete panel; and separating the concrete panel from the mold.

Description

Method for manufacturing precast panels using waste clothing

[0001] The present invention relates to a method for manufacturing a precast panel using waste clothing, and more specifically, to a method for manufacturing a precast panel using waste clothing that has the function of high-strength composite carbon-reinforced concrete by using waste clothing and nanocarbon during concrete formation.

[0002] There are two main methods for constructing concrete structures at construction sites, including buildings and bridges. The two most common methods for constructing concrete structures are reinforced concrete (RC) and precast concrete (PC).

[0003] The RC method is a construction method that involves installing formwork at the construction site, assembling reinforcing bars, pouring concrete, and then repeating the process of curing and removing the formwork after pouring the concrete. It is also called the on-site casting method.

[0004] Precast concrete (PC) construction involves prefabricating structures like columns, beams, slabs, and boxes in a factory under systematic conditions, then transporting them to the site for construction. Also known as off-site construction, PC construction offers significant savings compared to RC construction, including reduced labor and construction costs, a shorter construction period, and reduced dust and noise.

[0005] For example, RC construction requires formwork installation and subsequent removal, which necessitates time for formwork installation, labor costs, pouring time, and curing periods. Conversely, PC construction eliminates the need for formwork installation, eliminating all formwork-related requirements.

[0006] As such, the PC method offers numerous advantages. However, double-wall construction using the PC method presents challenges, including poor bonding strength, insulation, and noise issues at the joints. Therefore, it is necessary to explore solutions to address these issues during double-wall construction.

[0007] In order to solve the above-mentioned problems, the technical task of the present invention is to present a method for manufacturing a precast panel using waste clothing, which ensures the safety of a building and has insulation and noise prevention functions by applying waste clothing and nanocarbon when forming concrete for manufacturing a precast panel.

[0008] The problems solved by the present invention are not limited to those mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

[0009] As a means for solving the above-mentioned technical problem, a method for manufacturing a precast panel using waste clothing according to an embodiment of the present invention includes the steps of collecting and crushing waste clothing, mixing the crushed waste clothing with powdered agitation cement, carbon fiber, silicon carbide, silicon fine powder, and an inorganic binder to form a concrete admixture, forming the formed concrete admixture using a preset mold, drying the formed concrete admixture at a preset temperature to form a concrete panel, and separating the concrete panel from the mold.

[0010] A further step may be included in which the metal waste is recycled to form a finish on one side of the concrete panel.

[0011] In the step of forming the above concrete panel, after the concrete panel is dried to a degree of 85% to 90%, the finishing material is laminated onto the concrete panel, and then the drying operation can be completed.

[0012] A step of forming insulation between the precast panel and the finishing material may be further included.

[0013] According to the present invention, by applying discarded materials such as waste clothing and metal waste to concrete, the recycling rate is increased, thereby providing an environmentally friendly method for manufacturing precast panels using waste clothing.

[0014] In addition, since waste clothing is mixed into the concrete, the mixing ratio of the concrete can be lowered, which can lighten the weight of the precast panel itself, prevent thermal expansion of the concrete, increase tensile strength, and even resolve inter-floor noise and provide insulation performance.

[0015] The effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

[0016] Figure 1 is a cross-sectional view of a precast panel using waste clothing according to one embodiment of the present invention, and

[0017] Figure 2 is a flowchart illustrating a method for manufacturing a precast panel using waste clothing according to one embodiment of the present invention.

[0018] The present invention can be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, irrelevant parts have been omitted for clarity of description, and identical or similar components are designated by the same reference numerals throughout the specification.

[0019] In this specification, the objects, other objects, features and advantages of the present invention will be readily understood through the following preferred embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed contents can be thorough and complete and so that the spirit of the present invention can be sufficiently conveyed to those skilled in the art.

[0020] In this specification, when a component is referred to as being on another component, it means that it can be formed directly on the other component, or a third component may be interposed between them. Furthermore, in the drawings, the thicknesses of the components are exaggerated for the purpose of effectively explaining the technical contents.

[0021] When terms such as "first," "second," etc. are used herein to describe components, these components are not intended to be limited by these terms. These terms are used merely to distinguish one component from another. The embodiments described and illustrated herein also include complementary embodiments.

[0022] Additionally, when it is said that a first element (or component) operates or executes on a second element (or component), it should be understood that the first element (or component) operates or executes in an environment in which the second element (or component) operates or executes, or operates or executes through direct or indirect interaction with the second element (or component).

[0023] Additionally, the terminology used herein is for the purpose of describing embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise. As used herein, the terms "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components.

[0024] FIG. 1 is a cross-sectional view of a precast panel using waste clothing according to one embodiment of the present invention.

[0025] Referring to FIG. 1, a precast panel (100) using waste clothing according to one embodiment of the present invention is configured with a structure in which a concrete panel (110), an insulation material (120), and a finishing material (130) are sequentially laminated.

[0026] A concrete panel (110) is a panel manufactured by mixing powder-mixed cement, carbon fiber, silicon carbide, silicon powder, inorganic binder, and crushed waste clothing and forming the shape of a precast panel (100) to be used in a double-wall method using a preset mold (not shown).

[0027] Insulation (120) is laminated on top of the concrete panel (110). Insulation is a material used for heat retention or heat blocking, and is made of a material with low thermal conductivity. There are many different types of insulation, and the material is not particularly limited.

[0028] Insulation can be categorized into resistive insulation, cellular insulation, reflective insulation, capacitive insulation, and vacuum insulation. Resistive insulation blocks heat conduction itself, and includes asbestos, fiberglass, and glass. Cellular insulation is made by inflating solid materials with a low thermal conductivity gas and fixing them into small foams to prevent convection, providing insulation with gaseous masses. Examples include Styrofoam, XPS, EPS, phenolic foam, autoclaved lightweight concrete (ALC), perlite, and aerogel. Reflective insulation reflects heat, and includes aluminum foil, mirrors, and silver plating. However, reflective insulation reflects sunlight, which can be counterproductive in winter when applied to buildings, so it is not used as building insulation. Capacitive insulation is made by inserting a core material such as glass wool or fumed silica into an outer covering such as metallized film or aluminum foil to prevent it from shrinking, removing air, and then reinforcing it with metal or synthetic resin sheets when necessary. It has the best insulating performance among the insulation materials developed to date, but has the disadvantage of being expensive.

[0029] A finishing material (130) is layered on top of the insulation (120). The finishing material (130) is made from recycled metal waste. By recycling metal waste into the finishing material (130), not only can the discarded waste be recycled, but also the tensile strength of the concrete is increased, making it more fire-resistant.

[0030] Concrete panels (110), insulation (120), and finishing materials (130) are compression-bonded to form a single precast panel (100). Accordingly, a building can be constructed on site using a double-wall method using a pair of precast panels (100).

[0031] Figure 2 is a flowchart illustrating a method for manufacturing a precast panel using waste clothing according to one embodiment of the present invention.

[0032] Herein, with reference to FIGS. 1 and 2, a method for manufacturing a precast panel using waste clothing according to one embodiment of the present invention is described.

[0033] Waste clothing is collected to manufacture precast panels (100). The collected waste clothing is crushed using a crusher (S110) to ensure proper mixing with concrete. The degree of crushing of the waste clothing using the crusher may vary depending on the circumstances.

[0034] After crushing the waste clothing, the powder-mixed cement, carbon fiber, silicon carbide, silicon powder, inorganic binder, and the crushed waste clothing are mixed together to form a concrete admixture (S120). Here, the powder-mixed cement can be any of general cement, awin or alumina cement, or a fast-setting cement made of gypsum. In addition, during the stirring operation, water containing polyvinyl alcohol (PVA) dissolved in medium-temperature water or a water-soluble resin mortar reinforcing agent can be sprayed at medium or high temperature.

[0035] When the stirring operation is completed, the concrete admixture is formed using a preset mold (not shown) (S130), and the concrete admixture inserted into the mold is dried at a preset temperature to form a concrete panel (110) (S140).

[0036] When the concrete panel (110) is formed, the concrete panel (110) is separated from the mold (S150), and insulation (120) and finishing material (130) are laminated on top of the concrete panel (110) to form it (S160). When laminating the insulation (120) and finishing material (130), the insulation (120) and finishing material (130) can be laminated before the concrete panel (110) is completely dried, for example, when it is dried in the range of 85% to 90%. If the insulation (120) and finishing material (130) are laminated before the concrete panel (110) is completely dried, the bonding between the concrete panel (110), the insulation (120), and the finishing material (130) can be made more solid. However, after laminating the insulation (120) and finishing material (130) on the concrete panel (110), the concrete panel (110) must be completely dried.

[0037] The final precast panel (100) is completed by stacking insulation (120) and finishing material (130) on top of the concrete panel (110) and then applying pressure to compress them (S170).

[0038] By this procedure, when forming a concrete panel (110), the mixing ratio of the concrete can be lowered by mixing in the crushed waste clothing, and as the waste clothing is filled in the proportion of the lowered concrete ratio, the weight of the concrete panel (110) can be reduced, and the insulation and inter-floor noise problems can be solved due to the characteristics of the waste clothing.

[0039] Those skilled in the art will appreciate that the present invention can be implemented in other specific forms without altering its technical spirit or essential characteristics. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims below rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

Claims

1. Step of collecting and crushing waste clothing; A step of forming a concrete admixture by mixing the above-mentioned crushed waste garments with powdered mixed cement, carbon fiber, silicon carbide, silicon fine powder and inorganic binder; A step of forming the formed concrete admixture using a preset mold; A step of drying the above-mentioned formed concrete admixture at a preset temperature to form a concrete panel; and A method for manufacturing a precast panel using waste clothing, characterized in that it comprises a step of separating the concrete panel from the mold.

2. In paragraph 1, A method for manufacturing a precast panel using waste clothing, characterized in that it further comprises a step of forming a finishing material on one side of the concrete panel by recycling metal waste.

3. In paragraph 2, A method for manufacturing a precast panel using waste clothing, characterized in that in the step of forming the concrete panel, the finishing material is laminated on the concrete panel when the concrete panel is dried in the range of 85% to 90%, and then the drying operation is completed.

4. In paragraph 2, A method for manufacturing a precast panel using waste clothing, characterized in that it further comprises a step of forming an insulation material between the precast panel and the finishing material.

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