High-strength brick manufacturing method

Abstract

The present invention relates to a method for manufacturing high-strength bricks, and more specifically, to an improved method for manufacturing high-strength bricks that contributes to the improvement of environmental pollution by increasing the recyclability of waste glass through the use of waste glass in brick manufacturing, and can increase strength, impact resistance, and durability compared to conventional bricks, while also improving formwork demolding and workability due to a fast curing speed.

Description

Technology Field

[0001] The present invention relates to a method for manufacturing high-strength bricks, and more specifically, to an improved method for manufacturing high-strength bricks that contributes to the improvement of environmental pollution by increasing the recyclability of waste glass through the use of waste glass in brick manufacturing, and can increase strength, impact resistance, and durability compared to conventional bricks, while also improving formwork demolding and workability due to a fast curing speed. Background Technology

[0003] Generally, a brick refers to a block or stone made of baked clay cut to a uniform size, used for building walls.

[0004] These bricks are easier to handle than stone under certain conditions and offer significant advantages in terms of transportation and production, but they also have disadvantages. Specifically, while strong against compressive stress, they are weak against tensile stress; they are also vulnerable to lateral forces and are more prone to collapse than structures built with stacked stones.

[0005] Bricks conventionally used as building materials are usually manufactured using natural raw materials such as clay and feldspathic minerals.

[0006] At this time, since a large amount of refractory raw materials such as kaolin and refractory clay are added to increase sintering density and strength, the sintering temperature is considerably high at 1230 to 1250°C. Consequently, unless the cooling speed is controlled by a special process to be very slow, the defect rate of the product due to freezing and other factors becomes significantly high, leading to significant problems with yield in actual general production sites.

[0007] To improve this, domestic registered patents such as the prior art literature have been disclosed.

[0008] Nevertheless, there is a demand for continuous upgrades to bricks that can increase strength, impact resistance, and durability compared to conventional bricks, while improving formwork demolding and workability due to their rapid hardening speed. Prior art literature

[0010] Korean Registered Patent No. 10-0400633 (September 23, 2003) Method for manufacturing high-strength floor bricks using waste glass The problem to be solved

[0011] The present invention was created to address the various problems of the aforementioned conventional technology. Its main objective is to provide an improved method for manufacturing high-strength bricks that contributes to environmental improvement by enhancing the recyclability of waste glass through the use of waste glass in brick manufacturing, and increases strength, impact resistance, and durability compared to conventional bricks, while also improving formwork demolding and workability due to a rapid curing speed. means of solving the problem

[0013] The present invention provides a method for manufacturing a high-strength brick, comprising the following steps to achieve the above-mentioned purpose: a raw material composition and molding step in which a composition for manufacturing a brick is prepared, placed in a molding die, and molded in a brick forming furnace; a drying step in which the molded brick is exposed to sunlight and air to remove moisture and harden; a firing step in which the dried brick is placed in a kiln and fired to increase binding force between components and secure durability and strength; and a cooling step in which the fired brick is slowly cooled to produce a product. In the raw material composition and molding step, the raw material composition is characterized by being composed of 10-15% by weight of waste glass powder, 3-6% by weight of butylated hydroxytoluene, 2-4% by weight of metakaolin, 50-60% by weight of sand, 10-15% by weight of mixed cement, and the remainder being water. Effects of the invention

[0015] According to the present invention, by manufacturing bricks using waste glass, the recyclability of waste glass is increased, thereby contributing to the improvement of environmental pollution. Furthermore, compared to conventional bricks, the strength, impact resistance, and durability can be increased, and improved effects can be obtained to enhance the demolding and workability of the formwork due to the fast curing speed. Specific details for implementing the invention

[0017] Hereinafter, preferred embodiments according to the present invention will be described in more detail.

[0018] The method for manufacturing high-strength bricks according to the present invention comprises: a raw material composition and molding step in which a composition for manufacturing bricks is prepared, placed in a molding die, and molded in a brick forming furnace; a drying step in which the molded bricks are exposed to sunlight and air to remove moisture and harden; a firing step in which the dried bricks are placed in a kiln and fired to increase the binding force between components and secure durability and strength; and a cooling step in which the fired bricks are slowly cooled to produce a product.

[0019] At this time, the raw material composition formed in the above raw material composition and molding steps consists of 10-15% by weight of waste glass powder, 3-6% by weight of butylated hydroxytoluene, 2-4% by weight of metakaolin, 50-60% by weight of sand, 10-15% by weight of mixed cement, and the remainder being water.

[0020] Here, waste glass powder contributes to improving durability and strength by maximizing the bonding force between components during firing and enhancing fixation stability; furthermore, it is eco-friendly, and if recycled instead of being landfilled, it contributes to energy conservation and the prevention of environmental pollution.

[0021] In this case, the waste glass powder may be added and used alone, but preferably, it is better to use it by adding and mixing 4.5 parts by weight of Cera Alba, 10 parts by weight of Sodium Pyrophosphate, 3.5 parts by weight of Modified Nano-Sulfur, and 5 parts by weight of Xanthan Gum for every 100 parts by weight of waste glass powder.

[0022] At this time, Cera Alba is composed of myrisyl palmitate, cerotic acid, ester, and high-carbon paraffin, thereby ensuring tensile strength through elastic cushioning.

[0023] In addition, sodium pyrophosphate inhibits layer separation by enhancing the anchoring function at the interface between components.

[0024] In addition, modified nano-sulfur enhances crack resistance, chemical resistance, and especially chloride ion barrier properties.

[0025] In addition, xanthan gum enhances the gelling properties between ingredients, thereby strengthening the bonding force.

[0026] In addition, butylated hydroxytoluene inhibits oxidation, stabilizes initial curing, and significantly enhances the inhibition of material bleeding.

[0027] In addition, the above metakaolin is added to enhance the watertightness and durability of the bricks.

[0028] In addition, the above sand may be added alone, but preferably, 6.5 parts by weight of celluloid, 17.5 parts by weight of manganese acetate, 7.5 parts by weight of vinylpyrrolidone, and 5.5 parts by weight of calcium sulfate may be further mixed with 100 parts by weight of sand.

[0029] Here, celluloid improves homogeneity, adhesion, and crack resistance when cement, sand, and water are mixed.

[0030] In addition, manganese acetate is added to enhance the effects of organic matter decomposition and radical reaction promotion as it slowly oxidizes while decomposing into orthorhombic crystalline powder to form manganese oxide.

[0031] In addition, vinylpyrrolidone is a substance corresponding to CAS number 25086-89-9, and it contributes to preventing surface cracks, spalling, and potholes in concrete structures by inhibiting the coarse growth of crystals contained in the composition.

[0032] Furthermore, calcium sulfate acts as an initial hardening agent for cement, promoting the reaction and enhancing the initial response by maintaining stable binding during cement hydration.

[0033] Meanwhile, the above mixed cement is composed of 5.5 parts by weight of 2-acrylamide-2-methylpropanesulfonic acid, 3.5 parts by weight of lithium aluminosilicate (LAS), 4.5 parts by weight of 1,2-dibromo-1-chloroethane, 5.5 parts by weight of phosphite ester, 3.5 parts by weight of gibbsite, 3.5 parts by weight of sodium pyrosulfite, and 4.5 parts by weight of cinnamate, mixed with 100 parts by weight of calcium aluminate cement.

[0034] In this case, calcium aluminate cement serves as a base cement, providing early strength development and shrinkage prevention properties during ultra-rapid setting. In particular, it has the characteristics of densifying the structure, preventing brick cracking, and increasing durability.

[0035] In addition, 2-Acrylamide-2-methylpropanesulfonic acid enhances water resistance and water repellency through penetration resistance.

[0036] In addition, lithium aluminosilicate (LAS) enhances long-term strength development, shrinkage reduction, water resistance, chemical resistance, and freeze-thaw resistance.

[0037] In addition, 1,2-dibromo-1-chloroethane is a substance corresponding to CAS number 598-20-9, which aims to stabilize dimensions during brick molding to suppress defects caused by volume changes, enhances water resistance, water resistance, and moisture resistance, and suppresses neutralization.

[0038] In addition, phosphite ester contributes to increasing the resistance to corrosion caused by chlorine components, thereby preventing crack resistance.

[0039] In addition, Gibbsite increases the bonding strength between minerals, improving initial strength and exhibiting rapid hardening characteristics.

[0040] In addition, sodium pyrosulfite (NaS2O5) inhibits oxidation during ultra-rapid hardening, thereby suppressing crack formation, material separation, material detachment, and interfacial separation.

[0041] In addition, cinnamate is added to prevent discoloration and oxidation.

[0042] On the other hand, in the present invention, 15 parts by weight of bismuth carbonate, 10 parts by weight of sulfobetaine chitosan, 10 parts by weight of sodium dodecylbenzenesulfonate, and 5.5 parts by weight of tridymite may be further added to 100 parts by weight of the raw material composition.

[0043] At this time, bismuth carbonate is a substance corresponding to CAS number 5892-10-4, which reduces the moisture content of the material, thereby reducing porosity and thereby increasing strength.

[0044] In addition, sulfobetaine chitosan is a water-soluble substance produced by reacting chitosan with 1,3-propanesultone, which increases compatibility with cement by enhancing affinity between different materials and mechanical properties, and contributes to the development of early strength.

[0045] In addition, sodium dodecylbenzenesulphonate is an anionic surfactant corresponding to CAS number 25155-30-0 that contributes to enhancing salt resistance and freeze-thaw resistance.

[0046] In addition, Tridymite is a material corresponding to CAS number 15468-32-3 that enhances water resistance, cushioning, and elastic recovery.

[0047] For the brick samples according to the present invention configured as described above, the compressive strength (KS L4201:2008) and water absorption rate (%) after firing were checked, and five samples were prepared and their average values ​​were calculated.

[0048] As a result of the experiment, the average compressive strength (N / mm²) was 54.5, significantly exceeding the specification of 36.7. In addition, the water absorption rate (%) was 3, which fell within the specification range.

[0049] In addition, wear resistance was found to be lower compared to existing products, and it was confirmed to have excellent freeze-thaw stability and a neutralization inhibition effect.

[0050] In addition, to check for material bleeding, samples were cut to examine the bonding state between the materials, and in particular, no bleeding was found with sand, and the mutual bonding structure was excellent.

[0051] In addition, water resistance was tested by dropping one drop of water mixed with red paint onto each of the four spots on the sample surface using a dropper, leaving it for two hours, and then visually checking whether the water mixed with red paint had seeped into the surface.

[0052] Upon inspection, no traces of seepage were found. This confirmed that waterproofing was ensured.

[0053] In addition, to check the crack resistance, the sample of the present invention was immersed in brine for 10 days, and then a weight of 15 tons was applied at 30-minute intervals for 10 hours to check for crack occurrence.

[0054] Upon inspection, no cracks were found. Additionally, no saltwater penetration occurred.

Claims

Claim 1 A method for manufacturing a brick comprising: a raw material composition and molding step of preparing a composition for manufacturing a brick, placing it in a molding die, and molding it in a brick forming furnace; a drying step of exposing the molded brick to sunlight and air to remove moisture and harden it; a firing step of placing the dried brick in a kiln and firing it to increase binding force between components and secure durability and strength; and a cooling step of slowly cooling the fired brick to produce a product; wherein, in the raw material composition and molding step, the raw material composition consists of 10-15% by weight of waste glass powder, 3-6% by weight of butylated hydroxytoluene, 2-4% by weight of metakaolin, 50-60% by weight of sand, 10-15% by weight of mixed cement, and the remainder being water. Claim 2 A method for manufacturing a high-strength brick according to claim 1, characterized in that the waste glass powder is further mixed with 4.5 parts by weight of Cera Alba, 10 parts by weight of Sodium Pyrophosphate, 3.5 parts by weight of Modified Nano-Sulfur, and 5 parts by weight of Xanthan Gum per 100 parts by weight of waste glass powder. Claim 3 In claim 1, the sand comprises, with respect to 100 parts by weight of sand, 6.5 parts by weight of celluloid, 17.5 parts by weight of manganese acetate, 7.5 parts by weight of vinylpyrrolidone, and calcium sulfate. A method for manufacturing high-strength bricks characterized by adding and mixing an additional 5.5 parts by weight.

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