KR102138476B1 - A light weight block composition, manufacturing method the same and the light weight block - Google Patents

Abstract

The present invention relates to a composition for a lightweight block, a manufacturing method thereof, and a lightweight block and, more specifically, to a composition for a lightweight block, comprising 1 to 15% by weight of pulp, 1 to 15% by weight of crushed styrofoam, 30 to 69% by weight of cement, 5 to 13% by weight of calcium aluminate, 3 to 10% by weight of spherical hollow filler, 0.5 to 7% by weight of expanded perlite, and 5 to 10% by weight of a natural thickener, a manufacturing method thereof, and a lightweight block. According to the present invention, provided are a composition for a lightweight block, excellent in physical properties such as compressive strength, flexural strength, bending strength, and tensile strength, excellent in lightness, heat insulation, and non-combustibility, and eco-friendly with no harmful substances eluted, a manufacturing method thereof, and a lightweight block.

Description

Light block composition, manufacturing method and light block thereof{A LIGHT WEIGHT BLOCK COMPOSITION, MANUFACTURING METHOD THE SAME AND THE LIGHT WEIGHT BLOCK}

The present invention relates to a composition for a light-weight block, a method for manufacturing the same, and a light-weight block, and more specifically, as a masonry finishing material for interior and exterior, it is a masonry finishing material having light weight and non-combustibility and heat insulation, so that it can be easily constructed by building blocks at the work site. It relates to a composition for a lightweight block, a method for manufacturing the same, and a lightweight block.

Buildings are generally constructed by building red bricks or cement blocks, etc., and to increase the insulation of a building, the insulation is used in the construction of the walls. There was a problem that cracks or the like were generated in the wall due to the applied load.

Recently, bricks have been developed in which blocks are made lighter by forming a number of through-holes in a block in order to reduce the load applied to a building as much as possible, but there is a problem in that physical properties such as compressive strength, bending strength and tensile strength of the block are deteriorated.

In addition, in order to solve the above problems, a technique has been developed in which a block is made lighter by mixing fibers without forming through-holes in the block, but due to the decrease in viscosity of the block caused by the fiber, it is not possible to input a large amount of fibers, which is satisfactory. In addition to not being able to secure toughness, a fiber ball phenomenon occurred, which resulted in a problem of deteriorating the performance of the block.

In addition, fiber incorporation does not completely prevent brittle fracture of high-strength blocks, such as high-strength concrete, and still vulnerable to physical properties such as mechanical strength, such as structures being destroyed immediately when an earthquake, fire, or natural deterioration occurs. Holding

Accordingly, there is a need for the development of lightweight blocks having excellent physical properties such as compressive strength, flexural strength, and tensile strength, as well as lightweight properties, as well as lightweight and non-combustible materials as building materials.

Korean Patent Publication No. 2012-0034457

In order to solve the problems of the prior art as described above, the present invention is excellent in physical properties such as compressive strength, flexural strength, flexural strength, and tensile strength, and is lightweight, lightweight, and non-combustible, and a composition for lightweight blocks that does not elute harmful substances, It is an object of the present invention to provide a manufacturing method and a lightweight block.

The above and other objects of the present invention can be achieved by the present invention described below.

In order to achieve the above object, the present invention is 1 to 15% by weight of pulp, 1 to 15% by weight of styrofoam crushed powder, 30 to 69% by weight of cement, 5 to 13% by weight of calcium aluminate, 3 to 3% of spherical hollow filler It provides a composition for a lightweight block, characterized in that it comprises 10% by weight, 0.5 to 7% by weight of expanded perlite and 5 to 10% by weight of a natural thickener.

In addition, the present invention is 1 to 15% by weight of pulp, 1 to 15% by weight of styrofoam, 30 to 69% by weight of cement, 5 to 13% by weight of calcium aluminate, 3 to 10% by weight of spherical hollow filler, expanded ferrite It provides a method for producing a composition for a lightweight block, characterized in that it comprises the step of mixing and stirring 0.5 to 7% by weight and 5 to 10% by weight of the natural thickener to prepare a premix.

In addition, the present invention provides a lightweight block prepared from the composition for a lightweight block.

As described above, according to the present invention, the composition for an eco-friendly lightweight block is excellent in physical properties such as compressive strength, flexural strength, bending strength, and tensile strength, while being excellent in heat insulation and non-flammability, as well as no harmful substances are eluted. It has the effect of providing a manufacturing method and a lightweight block thereof.

Hereinafter, the present invention will be described in detail.

Lightweight block composition of the present invention is 1 to 15% by weight of pulp, 1 to 15% by weight of styrofoam, 30 to 69% by weight of cement, 5 to 13% by weight of calcium aluminate, 3 to 10% by weight of spherical hollow fillers , Characterized in that it contains 0.5 to 7% by weight of expanded ferrite and 5 to 10% by weight of a natural thickener, in this case excellent physical properties such as compressive strength, flexural strength, bending strength and tensile strength, but also light weight, heat insulation and non-combustibility This excellent and harmful substances are not eluted, so it has an eco-friendly effect.

In the present invention, non-combustibility means a case corresponding to a non-combustible material or a flame-retardant first-class material according to the building method.

Looking at each component constituting the composition for a lightweight block of the present invention in detail as follows.

pulp

The pulp may be, for example, 1 to 15% by weight, preferably 1 to 13% by weight, more preferably 1.5 to 10% by weight relative to 100% by weight of the composition for a lightweight block, and strength is improved and cracks within this range This has the effect of being prevented.

The pulp may have, for example, a size of 1 to 5 mm, preferably 1.5 to 4 mm, and within this range, the strength is improved, cracks are prevented, and the effect of uniformly mixing with styrofoam crushed powder and cement is excellent. Do.

The pulp may be, for example, recycled pulp obtained from waste paper, and in this case, recycling resources to prevent environmental pollution and reduce production costs.

The recycled pulp is, for example, a step of removing foreign substances by impregnating waste paper with an aqueous solution having a sodium hydroxide concentration of 15 to 50% by weight, preferably 20 to 40% by weight; Cutting the waste paper from which the foreign substances are removed and swollen in a high-speed stirrer rotating at a speed of 400 to 600 rpm, preferably 450 to 550 rpm; Washing the cut waste paper with water; Dewatering the washed waste paper in a dehydrator; Drying the dehydrated waste paper in a dryer; And crushing the dried waste paper with 1 to 5 mm, preferably 1.5 to 4 mm with Krascha, in this case, waste being discarded while maintaining physical properties, light weight, heat insulation and flame retardancy. It is excellent in preventing environmental pollution by recycling.

Styrofoam crushed powder

The styrofoam crushed powder may be, for example, 1 to 15% by weight, preferably 2 to 12% by weight, more preferably 2.5 to 10% by weight, based on 100% by weight of the total composition for a lightweight block, and thermal insulation within this range And it has an effect of excellent strength.

The styrofoam crushed powder is, for example, crushed expanded polystyrene (EPS) with a pulverizer, and specifically, after the primary crushing so that the size of the pincrasher is 5 mm or less, and preferably 1 to 5 mm, the size of the crushers is It may be a second crushed to be 0.5 to 3 mm, preferably 0.5 to 2 mm, mixing is easy and uniformly mixed within this range, there is an effect of excellent insulation performance.

The styrofoam crushed powder of the present disclosure refers to particles or powder formed when crushed expanded polystyrene, and is not limited to crushing, and may include expanded polystyrene particles or powder in an equivalent or similar form to crushed.

The foamed polystyrene may be, for example, recycled foamed polystyrene, and in this case, the production cost is reduced while maintaining physical properties, and the economical effect is excellent, and the waste is recycled to prevent environmental pollution.

The styrofoam may be, for example, a foamed styrene polymer, and the styrenic polymer may be, for example, styrene homopolymer, polystyrene, poly(alkylstyrene), poly(halogenated styrene), poly(halogenated alkylstyrene), poly(alkoxystyrene). , Poly(vinyl benzoic acid ester), and one or more selected from the group consisting of these hydrogenated polymers, in this case, there is an excellent effect of heat insulation and surface strength.

cement

The cement may be, for example, 30 to 69% by weight, preferably 40 to 62% by weight, more preferably 50 to 60% by weight relative to 100% by weight of the total composition for a light weight block, and within this range, rapid-hardening reaction It is excellent in initial adhesive strength and has the effect of ensuring the pot life.

The cement is, for example, Portland cement, or white Portland cement, and has a specific surface area of 1 to 3000 to 4000 cm ² /g, preferably 3200 to 3700 cm ² /g; Compressive strength (28 days) is for example 40 to 50 Mpa, preferably 43 to 47 Mpa; And the whiteness may be, for example, 85% or more, preferably 90% or more; within this range, there is an excellent effect of fast-response reaction and physical property balance.

In the present invention, the specific surface area can be measured by adsorption using a BET isotherm (ISO 9277:1995).

Compressive strength in the present invention can be measured according to KSL ISO 610 standards.

In the present invention, the whiteness can be measured according to the KS L 5204 standard.

Calcium aluminate

The calcium aluminate may be, for example, 5 to 13% by weight, preferably 6 to 12% by weight, more preferably 5.5 to 9% by weight, based on 100% by weight of the composition for a lightweight block, and within this range Due to the excellent rigidity, the pot life is secured, so it is possible to work within the desired time.

The calcium aluminate is, for example, a high purity calcined alumina and limestone as raw materials, calcined at a high temperature of about 1600°C, and pulverized in a ball mill at a predetermined powder level (Blaine) to produce alumina ( Al ₂ O ₃ ) The content is 65 to 75% by weight, and it can be used even at a high temperature of 1700℃. The main chemical component is made of alumina and calcium oxide, and in the mineral phase, it is the main mineral calcium mono-aluminate (Calcium mono -Aluminate; CaOAl ₂ O ₃ , CA) and calcium di-aluminate (CaO2Al ₂ O ₃ , CA ₂ ), which is an auxiliary mineral.

The calcined alumina in the present description is not particularly limited in the case of calcined alumina generally recognized in the technical field to which the present invention belongs, unless otherwise defined, and commercially available calcined alumina can be used. High purity calcined alumina refers to calcined alumina having a purity of 99.5% or more.

The calcium aluminate may have, for example, a powderiness of 4,000 to 6,000 cm ² /g, preferably 4,700 to 5,000 cm ² /g, and has an excellent effect of rapid fastness within this range.

Powder degree in the present invention can be measured by the Blaine (specific surface area by air permeation device) method (KS L 5106).

Spherical hollow filler

The spherical hollow filler may be, for example, 3 to 10% by weight, preferably 3 to 9% by weight, more preferably 4 to 8% by weight, based on 100% by weight of the total composition for a lightweight block, and within this range Excellent insulation and light weight.

The spherical hollow filler is, for example, a hollow hollow capsule, which has the effect of exerting heat and light weight by the air layer in the capsule.

The spherical hollow filler may have, for example, a particle size of 10 to 150 μm, preferably 50 to 100 μm, excellent heat insulation within this range, and uniformly mixed with cement, styrofoam crushed powder, pulp, etc., to produce a block. It has excellent workability.

In the present invention, the particle size can be measured by a mesh.

In the present invention, the sphere includes the meaning of the sphere commonly used in the technical field to which the present invention belongs, and as an example, means a round shape like a ball.

The spherical hollow filler may be, for example, manufactured by firing perlite in a top-town manner with a perlite spherical filler, and specifically, after expanding the ferrite pulverized powder directly into heat with a perlite spherical filler having a particle size of 10 to 150 μm, It may be manufactured in a spherical shape by melting only the surface by direct heat, and in this case, it is excellent in heat insulation and can achieve light weight without emitting harmful components, so it is easy to work and does not break the hollow filler in the step of mixing and stirring. There is.

The perlite spherical filler may include, for example, pulverizing a perlite gemstone to a size of 5 to 15 μm to prepare pulverized powder; And the pulverized powder is collected by a hopper and supplied to a metering feeder, and then degraded in a kiln, but when the height is 100% from the bottom of the kiln, a section of 70 to 100% in height from the bottom of the kiln is, for example, temperature 650 to 850 The section that expands with direct heat of, preferably 700 to 800° C. and becomes 30 to 70% in height from the bottom includes, for example, manufacturing by melting only the surface with direct heat at a temperature of 1100 to 1300° C., preferably 1150 to 1250° C. It can be, in this case, excellent in heat insulation and light weight can be achieved without releasing harmful components, so it is easy to stack blocks, and there is an effect that the hollow filler is not broken at the stage of mixing and stirring.

The calcination furnace may have, for example, a diameter of 1 to 5 m, preferably 1.5 to 4 m, more preferably 2 to 3 m, a height of 7 to 15 m, preferably 8 to 14 m, more preferably 10 to 12 m, and Within the range, there is an effect that a hollow filler is produced without breaking.

The Pearlite gemstone is also called Peral Stone, and is a natural substance with 2 to 5% by weight of crystalline water. Viscous lava or magma flows into the surface lake and is generated by rapid cooling. It usually has an abyssal gloss. The minerals called perlite include obsidian, perlite, and pine, and the chemical composition is similar to that of granite, except for loss of heating.

The perlite spherical filler is, for example, white or grayish white, and has a specific gravity of 0.15 or more, preferably 0.15 to 0.25, as an example. There is one effect.

The perlite spherical filler is, for example, a non-combustible inorganic material, and has no risk of generating toxic gases during a fire, and is chemically harmless to humans with a pH of 6-8 or 6.5-7.5.

In the present description, unless otherwise defined, the pH may be measured by a method commonly measured in the art to which the present invention pertains, and for example, a sample may be suspended or dissolved in water and then measured with a pH meter.

Inflatable perlite

The expanded perlite may be, for example, 0.5 to 7% by weight, preferably 1 to 6% by weight, more preferably 1.5 to 5% by weight, based on 100% by weight of the composition for a lightweight block, and has excellent heat insulation within this range. Light weight and easy to stack blocks.

In the present invention, the expanded ferrite refers to, for example, a 20 to 30-fold expansion of the original volume at a high temperature of 760 to 900° C. after crushing the ferrite gemstone finely.

The expanded perlite may have, for example, a particle size of 0.3 to 1.7 mm, preferably 0.5 to 1.5 mm, more preferably 0.7 to 1.3 mm, and has excellent heat insulation within this range and weight reduction without releasing harmful components. Since it can be achieved, it is easy to stack blocks.

In the present invention, the particle size can be measured with a mesh.

The expanded perlite may be in the form of an open cell, for example, and in this case, production cost may be reduced and light weight may be achieved, thereby facilitating the construction of blocks.

The expanded perlite may be, for example, white or grayish white, and specific gravity may be, for example, 0.04 to 0.1, preferably 0.06 to 0.07, and lighter weight blocks may be manufactured within this range, and block stacking and construction may be easily performed.

The expanded perlite is, for example, a non-combustible inorganic material, which has no risk of generating toxic gases during a fire, and is a food additive approved material and is chemically neutral with a pH of 6-8 or 6.5-7.5.

Natural thickener

The natural thickener may be, for example, 5 to 10% by weight, preferably 6 to 9% by weight, more preferably 6.5 to 8.5% by weight, based on 100% by weight of the composition for a lightweight block, and viscosity and By improving the flowability, there is an excellent workability effect.

The natural thickener is a natural thickener obtained in nature, and is not particularly limited in the case of a natural thickener commonly used in the technical field to which the present invention belongs, but may be preferably kaolin, and in this case, viscosity, flowability, and antibacterial properties This has an excellent effect.

The kaolin is also referred to as koreung or white clay, and its main components are kaolinite (Al ₂ O ₃ ·2SiO ₂ ·2H ₂ O) and halosite (Al ₂ O ₃ ·SiO ₂ ·4H ₂ O). ), feldspars such as feldspar, feldspar, soda feldspar, and feldspar in rocks are produced by weathering that is chemically decomposed by carbonic acid or water.

The kaolin has excellent antibacterial and antifungal properties, high deodorization rate of ammonia water, excellent thermal conductivity, far infrared radiation and strength, and excellent gloss.

The kaolin is, for example, plate-like kaolin, and particles having a size of 2 μm or less, preferably 0.1 to 2 μm, may occupy 80 wt% or more of the total weight of kaolin, and in this case, deodorization rate, antibacterial and antifungal properties are excellent. It works.

The composition for the lightweight block may include, for example, 15 to 35% by weight of the lightweight aggregate, preferably 18 to 30% by weight, more preferably 18 to 25% by weight, based on 100% by weight of the total composition for the lightweight block, In this case, the strength of the lightweight block is increased.

The lightweight aggregate may be, for example, 10 to 30% by weight of fly ash, 10 to 30% by weight of paper ash, 40 to 60% by weight of clay, and 10 to 30% by weight of quicklime, preferably 15 to 25% by weight of fly ash , 15 to 25% by weight of paper ash, may contain 45 to 55% by weight of clay and 15 to 25% by weight of quicklime, there is an effect of improving the strength of the lightweight block within this range.

The lightweight aggregate may have, for example, a density of 0.2 to 0.8 kg/m ³ , preferably 0.3 to 0.7 kg/m ³ , and light weight can be achieved within this range, thereby facilitating block stacking.

Density in the present description is measured according to KS L 4914.

In this description, fly ash refers to coal ash collected from a flue gas of a boiler burning pulverized coal as a dust collector, and the spherical particle size is about the same as that of cement, and alumina and silica are the main components.

The fly ash may be, for example, an unmilled fly ash, and in this case, the strength may be further improved.

The fineness of the pulverized fly ash may be, for example, 3,000 to 3,800 cm ² /g, preferably 3,000 to 3,800 cm ² /g, more preferably 32,000 to 3,700 cm ² /g, and the density to 1.5 to It may be 2.8 g / cm ³ , preferably 2.0 to 2.5 g / cm ³ , there is an effect of excellent strength in this range.

The powder level of the fly ash can be measured by KS L 5405.

The density of the fly ash can be measured by KS L 5110.

In this description, paper ash is meant to be incinerated after being used in a paper mill.

The paper ash is, for example, pulverized the ash obtained by heat treatment at a temperature of about 500 to 1,300°C, the paper mill sludge, which has been treated as waste, so that the powder has a blaine specific surface area of about 4,000 to 12,000 cm ² /g. It can be used, in this case has the effect of improving the strength and durability.

Powder degree in the present invention can be measured by the Blaine (specific surface area by air permeation device) method (KS L 5106).

In the present invention, quicklime is also called calcium oxide, quicklime, ganghoe or white ash, and is formed by decarbonizing limestone.

The composition for a lightweight block may include, for example, 0.1 to 5% by weight of a curing retarder, preferably 0.5 to 5% by weight, more preferably 0.5 to 3% by weight, based on 100% by weight of the total composition for a lightweight block, and In this case, the effect of delaying the curing by controlling the fast-breaking time is excellent.

The curing retarder may be at least one selected from the group consisting of tartaric acid, lignosulfonate, hydroxylated carboxylic acid, borax, and gluconic acid, and in this case, by controlling the fast-duration time. The effect of retarding curing is excellent.

The composition for a light weight block of the present invention may be, for example, a premix type, and in this case, it is easy to store and transport, and can be easily manufactured into a block by mixing with water, and thus has excellent workability.

In the present invention, the premix type means a mixture in which raw materials of powder are uniformly mixed.

In addition, the method for preparing the composition for a lightweight block of the present invention is, for example, 1 to 15% by weight of pulp, 1 to 15% by weight of styrofoam crushed powder, 30 to 69% by weight of cement, and calcium aluminium relative to 100% by weight of the composition for a lightweight block. 5 to 13% by weight of nate, 3 to 10% by weight of spherical hollow filler, 0.5 to 7% by weight of expanded ferrite, and 5 to 10% by weight of natural thickener are mixed and stirred to prepare a premix. , In this case, it has excellent physical properties such as compressive strength, bending strength and tensile strength, yet has excellent thermal insulation and non-combustibility with light weight, and furthermore, it has an eco-friendly effect because no harmful substances are eluted.

The pulp may have, for example, a size of 1 to 5 mm, preferably 1.5 to 4 mm, and within this range, the strength is improved, cracks are prevented, and the effect of uniformly mixing with styrofoam crushed powder and cement is excellent. Do.

The pulp may be, for example, recycled pulp obtained from waste paper, and in this case, recycling resources to prevent environmental pollution and reduce production costs.

The recycled pulp is, for example, a step of removing foreign substances by impregnating waste paper with an aqueous solution having a sodium hydroxide concentration of 15 to 50% by weight, preferably 20 to 40% by weight; Cutting the waste paper from which the foreign substances are removed and swollen in a high-speed stirrer rotating at a speed of 400 to 600 rpm, preferably 450 to 550 rpm; Washing the cut waste paper with water; Dewatering the washed waste paper in a dehydrator; Drying the dehydrated waste paper in a dryer; And crushing the dried waste paper with 1 to 5 mm, preferably 1.5 to 4 mm, with Krascha; in this case, it is excellent in physical properties, light weight, heat insulation, and flame retardancy, but does not throw away waste. It has excellent effect of preventing environmental pollution by recycling.

The styrofoam crushed powder may be, for example, 1 to 10% by weight, preferably 2 to 8% by weight, more preferably 3 to 7% by weight, based on 100% by weight of the composition for a lightweight block, and heat insulating properties within this range And it has an effect of excellent strength.

The styrofoam crushed powder is, for example, crushed expanded polystyrene (EPS) with a pulverizer, and specifically, after the primary crushing so that the size of the pincrasher is 5 mm or less, and preferably 1 to 5 mm, the size of the crushers is It may be a second crushed to be 0.5 to 3 mm, preferably 0.5 to 2 mm, mixing is easy and uniformly mixed within this range, there is an effect of excellent insulation performance.

The foamed polystyrene may be, for example, recycled foamed polystyrene, and in this case, the production cost is reduced while maintaining the physical properties, and the economical effect is excellent, and the waste is recycled to prevent environmental pollution. .

The styrofoam may be, for example, a foamed styrene polymer, and the styrenic polymer may be, for example, styrene homopolymer, polystyrene, poly(alkylstyrene), poly(halogenated styrene), poly(halogenated alkylstyrene), poly(alkoxystyrene). , Poly(vinyl benzoic acid ester), and one or more selected from the group consisting of these hydrogenated polymers, in this case, there is an excellent effect of heat insulation and surface strength.

The spherical hollow filler can be manufactured into a spherical shape by directly expanding the pulverized pulverized powder into direct heat with a perlite spherical filler having a particle size of 10 to 150 µm, and then melting only the surface with direct heat. It is possible to achieve weight reduction without releasing harmful components, and thus it is easy to work, and there is an effect that the hollow filler is not broken at the stage of mixing and stirring.

The manufacturing method of the spherical hollow filler may include, for example, pulverizing a ferrite ore to a size of 5 to 15 μm to prepare a pulverized powder; And collecting the pulverized powder with a hopper, supplying it to a metering feeder, and then dropping it in a kiln, when the height from the bottom of the kiln is 100% to 70 to 100% from the bottom of the kiln, the temperature is 650 to 850°C, Preferably, the section that expands with direct heat of 700 to 800°C and becomes 30 to 70% in height from the bottom may include the step of manufacturing by melting only the surface with direct heat of temperature 1100 to 1300°C, preferably 1150 to 1250°C. In this case, it is excellent in heat insulation and in this case, light weight can be achieved without releasing harmful components, and thus it is easy to work, and there is an effect that the hollow filler is not broken in the step of mixing and stirring.

Cement, calcium aluminate, expanded pearlite, and natural thickeners in the method for preparing the composition for the lightweight block may include, for example, those used in the composition for the lightweight block.

The method for preparing the composition for the lightweight block may include, for example, 15 to 35% by weight, preferably 18 to 30% by weight, more preferably 18 to 25% by weight, based on 100% by weight of the total composition for the lightweight block. In this case, the strength of the lightweight block is increased.

The method for preparing the composition for the lightweight block is, for example, 10 to 30% by weight of fly ash, 10 to 30% by weight of paper ash, 40 to 60% by weight of clay, and 10 to 30% by weight of mixture containing 10 to 30% by weight of quicklime. Compress molding to spray 1 part to 6 mm by spraying 30 parts by weight; And calcining the compression-molded mixture from 250 to 350° C. to 850 to 1050° C. over 10 to 25 minutes, followed by calcination; in this case, the strength of the block may be included. It has the effect of improving.

In a preferred embodiment, the method for preparing the composition for the lightweight block is 15 to 25% by weight of fly ash, 15 to 25% by weight of paper ash, 45 to 55% by weight of clay, and 15 to 25% by weight of quicklime mixture, 100 parts by weight of water 15 Compress molding to spray 2 to 5 mm by spraying 25 parts by weight; And sintering the compression-molded mixture from 270 to 320° C. to 900 to 1000° C. over 15 to 20 minutes, followed by calcination; in this case, the strength of the block may be included. It has the effect of improving.

The compression molding step may be performed in a smelter as an example, and firing may be performed in a firing furnace as an example.

In the firing step, for example, quicklime reacts with water to eject a gas at a high temperature, thereby reducing the density.

The method for preparing the composition for a lightweight block may include, for example, 0.1 to 5% by weight, preferably 0.5 to 5% by weight, and more preferably 0.5 to 3% by weight based on 100% by weight of the composition for the lightweight block. In this case, the effect of delaying the curing by controlling the fast-breaking time is excellent.

The step of manufacturing with the premix can be carried out, for example, in a ribbon mixer or a powder stirrer, and in this case, there is an effect of uniformly mixing.

In addition, the light weight block of the present invention can be prepared from the composition for the light weight block, in this case it is excellent in physical properties such as compressive strength, flexural strength and tensile strength, but also excellent in heat insulation and non-combustibility with light weight, and furthermore, no harmful substances are eluted. It has an eco-friendly effect.

The lightweight block may be, for example, compressive strength measured in accordance with KS F4914 of 5.0 N/cm ² or more, preferably 5.0 to 12 N/cm ² , more preferably 5.5 to 10 N/cm ² , and Within the range, there is an effect of excellent physical property balance.

The lightweight block may be, for example, a bending strength measured according to KS F 2263 of 45 kg/cm ² or more, preferably 45 to 60 kg/cm ² , more preferably 48 to 55 kg/cm ² , and Within the range, there is an effect of excellent physical property balance.

The lightweight block may be, for example, a bending strength measured according to KS F 4914 of 5.5 kg/cm ² or more, preferably 5.5 to 7.5 kg/cm ² , more preferably 5.8 to 7.0 kg/cm ² , Within this range, there is an effect of excellent physical property balance.

The lightweight block may be, for example, tensile strength measured according to KS M 3862 of 5.8 kg/cm ² or more, preferably 5.8 to 7.0 kg/cm ² , more preferably 6.0 to 6.7 kg/cm ² , Within this range, there is an effect of excellent physical property balance.

For example, the light weight block may have a thermal conductivity of 0.1 kcal or less, preferably 0.05 to 0.1 kcal, more preferably 0.06 to 0.095 kcal, measured in accordance with KS L 9016, and have excellent physical property balance within this range. have.

For example, the lightweight block may have a length conversion rate of 0.01% or less, preferably 0.001 to 0.01%, more preferably 0.003 to 0.07%, measured according to KS F 2562, and have excellent physical property balance within this range. It has an excellent effect on form stability.

The lightweight block may have, for example, a density measured according to KS L 4914 of 0.52 kg/m ³ , preferably 0.40 to 0.52 kg/m ³ , more preferably 0.45 to 0.50 kg/m ³ , and this range There is an excellent effect in physical properties balance.

The lightweight block may be, for example, a flame retardant measured according to KS F ISO 1182, as an example, and has a suitable effect as a building material in this case.

In addition, the method for manufacturing a light weight block of the present invention comprises the steps of preparing a mixture by mixing 50 to 70 parts by weight of water in a blender with respect to 100 parts by weight of the composition for the light weight block; Filling the mixture in a tray and curing for 40 to 60 hours; And cutting the cured mixture to prepare a lightweight block; in this case, it has excellent physical properties such as compressive strength, flexural strength, and tensile strength, but is excellent in heat insulation and non-combustibility with light weight and further harmful. There is an environmentally friendly effect because the substance is not eluted.

Hereinafter, a preferred embodiment is provided to help the understanding of the present invention, but the following examples are merely illustrative of the present invention, and it is apparent to those skilled in the art that various changes and modifications are possible within the scope and technical thought scope of the present invention. It is no wonder that such variations and modifications fall within the scope of the appended claims.

[Example 1]

Recycled Pulp Manufacturing

Removing and inflating foreign substances by impregnating the waste paper in an aqueous solution having a sodium hydroxide concentration of 20% by weight; Cutting the waste paper from which the foreign matter has been removed and swollen in a high-speed stirrer rotating at a speed of 500 rpm; Washing the cut waste paper with water; Dewatering the washed waste paper in a dehydrator; Drying the dehydrated waste paper in a dryer; And pulverizing the dried waste paper to 1.5 to 4 mm with Krascha.

Styrofoam crushed powder production

The recycled foamed polystyrene was first crushed to a size of 1 to 5 mm in a pincrasher, and then crushed to a size of 0.5 to 2 mm in a crusher to prepare a styrofoam crushed powder.

Spherical hollow body filler production

Preparing a pulverized powder by pulverizing a perlite gemstone to a size of 10 µm; And collecting the pulverized powder with a hopper, supplying it to a quantitative feeder, and then dropping it in a firing furnace having a diameter of 2 m and a height of 10 m, and a section of 7 to 10 m in height from the bottom of the firing furnace is expanded with direct heat of 760° C. and 3 to 7 m in height from the bottom. The phosphorus section was melted only by direct heat at 1200° C. to produce a spherical hollow filler. The prepared spherical hollow filler had a specific gravity of 0.12 to 0.15 and a particle size of 50 to 100 μm.

Preparation of lightweight block composition

5% by weight of recycled pulp prepared above and 8% by weight of styrophone crushed powder, 60% by weight of white Portland cement, 7% by weight of calcium aluminate, 8% by weight of ferrite spherical fillers, and 5% of expanded ferrites % And 7% by weight of kaolin as a natural thickener was stirred with a ribbon mixer to prepare a composition for a lightweight block in a premix type.

Lightweight block manufacturing

The mixture of 60 parts by weight of water mixed with 100 parts by weight of the composition for a lightweight block in the form of a premix prepared above was mixed in a mixer and then filled in a tray and cured for 48 hours. The cured mixture was cut into a size of 300*200*150 mm to prepare a lightweight block.

[Example 2]

Lightweight aggregate manufacturing

15 parts by weight of fly ash, 15% by weight of paper ash, 50% by weight of clay, and 20 parts by weight of a mixture containing 20% by weight of quicklime; And putting the compression-molded mixture in a firing furnace to increase the temperature from 300 °C to 950 °C over 15 minutes to fire. At this time, the density of the lightweight aggregate was 0.4 to 0.6 kg/m ³ .

Preparation of lightweight block composition

9% by weight of recycled pulp prepared in Example 1 and 5% by weight of styrophone crushed powder, 40% by weight of white Portland cement, 7% by weight of calcium aluminate, and ferrite as a spherical hollow filler prepared in Example 1 Premix the lightweight block composition by stirring 5% by weight of spherical filler, 3% by weight of expanded ferrite, 5.5% by weight of kaolin as a natural thickener, 25% by weight of lightweight aggregate prepared above and 0.5% by weight of tartaric acid as a curing retarder with a ribbon blender (premix) type.

Lightweight block manufacturing

The mixture of 60 parts by weight of water mixed with 100 parts by weight of the composition for a lightweight block in the form of a premix prepared above was mixed in a mixer and then filled in a tray and cured for 48 hours. The cured mixture was cut to size 300*200*150 to prepare a lightweight block.

[Comparative Example 1]

Commercially available ALC lightweight blocks were used.

[Experimental Example]

Compressive strength, flexural strength, bending strength, tensile strength, thermal conductivity, density, length change rate, and flame retardancy were measured and summarized in Table 1 below.

* Compressive strength: Measured according to KS F4914.

* Flexural strength: measured according to KS F 2263.

* Bending strength: Measured according to KS F 4914.

* Tensile strength: Measured according to KS M 3862.

* Thermal conductivity: measured according to KS L 9016.

* Density: Measured according to KS L 4914.

* Length change rate: Measured according to KS F 2562.

* Flame retardance: measured according to KS F ISO 1182.

Test Items Example 1 Example 2 Comparative Example 1 Compressive strength (N/cm ² ) 5.5 5.6 4.2 Flexural strength (kg/cm ² ) 48 50 42 Bending strength (kg/cm ² ) 5.8 5.9 5.2 Tensile strength (kg/cm ² ) 6.0 6.2 5.6 Thermal conductivity (kcal) 0.092 0.092 0.11 Density ((kg/m ³ ) 0.50 0.49 0.55 Length change rate (%) 0.005 0.005 0.015 Flame retardant Non-combustible Non-combustible Non-combustible

As shown in Table 1, Examples 1 and 2 obtained according to the present invention have excellent physical properties of compressive strength, flexural strength, bending strength, and tensile strength compared to Comparative Example 1, but also have low thermal conductivity and excellent thermal insulation and flame retardancy. It is suitable as a building material due to non-combustibility, and also has a small change in length, so it is excellent in shape stability after being manufactured as a block, and has a very low density, making it easy to build blocks. In addition, Example 2 including a light weight aggregate had an effect of increasing strength than Example 1.

Claims (15)

1 to 15% by weight of pulp, 1 to 15% by weight of styrofoam, 30 to 69% by weight of cement, 5 to 13% by weight of calcium aluminate, 3 to 10% by weight of spherical hollow filler, 0.5 to 7% by weight of expanded perlite , 5 to 10% by weight of natural thickener and 15 to 35% by weight of lightweight aggregate,
In the spherical hollow filler, the pulverized powder of the pulverized oreite pulverized to a size of 5 to 15 µm is dropped in a kiln, but when the height is 100% from the bottom of the kiln, a height of 70 to 100% from the bottom of the kiln is temperature 700 It is expanded by direct heat of ~800 ℃ and 30 to 70% of the height from the bottom is manufactured spherically by melting only the surface with direct heat of 1150 to 1250°C.
The expanded perlite has a particle size of 0.7 to 1.3 mm,
The lightweight aggregate is compression molded by spraying 10 to 30 parts by weight of water to 100 parts by weight of a mixture containing 10 to 30% by weight of fly ash, 10 to 30% by weight of paper ash, 40 to 60% by weight of clay and 10 to 30% by weight of quicklime And the compression-molded mixture was prepared by firing by raising the temperature from 250 to 350 ℃ to 850 to 1050 ℃ over 10 to 20 minutes,
Characterized in that the density measured according to KS L 4914 is 0.40 to 0.52 kg/m ³
Lightweight block composition.
delete delete According to claim 1,
The pulp is characterized in that the recycled pulp obtained from waste paper
Lightweight block composition.
According to claim 1,
The styrofoam crushed powder is characterized by being obtained from recycled expanded polystyrene.
Lightweight block composition.
delete delete Manufacturing a spherical hollow filler;
Manufacturing a lightweight aggregate; And
1 to 15% by weight of pulp, 1 to 15% by weight of styrofoam powder, 30 to 69% by weight of cement, 5 to 13% by weight of calcium aluminate, 3 to 10 spherical hollow filler Including the step of preparing a premix by mixing and stirring a weight percent, 0.5 to 7 percent by weight of expanded ferrite having a particle size of 0.7 to 1.3 mm, 5 to 10 percent by weight of a natural thickener and 15 to 35 percent by weight of a light aggregate.
The step of manufacturing the spherical hollow filler comprises grinding the perlite ore to a size of 5 to 15 μm to prepare a pulverized powder; And collecting the pulverized powder with a hopper, supplying it to a metering feeder, and then dropping it in a firing furnace. When the height is 100% from the bottom of the firing furnace, a section of 70 to 100% in height from the bottom of the firing furnace is directly heated at a temperature of 700 to 800°C. The step of expanding and 30 to 70% in height from the bottom includes the steps of manufacturing a spherical hollow filler by melting only the surface with direct heat at a temperature of 1150 to 1250°C,
The step of producing the lightweight aggregate is 10 to 30 parts by weight of water to 100 parts by weight of a mixture comprising 10 to 30% by weight of fly ash, 10 to 30% by weight of paper ash, 40 to 60% by weight of clay and 10 to 30% by weight of quicklime Injection molding; And calcining the compression-molded mixture from 250 to 350° C. to 850 to 1050° C. by raising the temperature over 10 to 20 minutes.
Characterized in that the density measured according to KS L 4914 is 0.40 to 0.52 kg/m ³
Method for preparing lightweight block composition.
delete delete The method of claim 8,
The method for preparing the composition for a lightweight block includes removing waste material and inflating it by impregnating waste paper with an aqueous solution having a sodium hydroxide concentration of 15 to 50% by weight; Cutting the waste paper from which the foreign matter has been removed and swollen in a high-speed stirrer rotating at a speed of 400 to 600 rpm; Washing the cut waste paper with water; Dewatering the washed waste paper in a dehydrator; Drying the dehydrated waste paper in a dryer; And pulverizing the dried waste paper into 1 to 5 mm with a Krascha; including the step of producing recycled pulp.
Method for preparing lightweight block composition.
The method of claim 8,
The method for preparing the composition for the lightweight block includes the steps of first crushing the expanded styrene to a particle size of 5 mm or less with a pincrasher, and then secondarily crushing it to a particle size of 0.5 to 3 mm with the Krasharo to prepare a styrofoam crushed powder. Characterized by
Method for preparing lightweight block composition.
delete A lightweight block made from the composition for a lightweight block according to any one of claims 1, 4 or 5.
A composition for a lightweight block, characterized in that it is produced by the manufacturing method according to any one of claims 8, 11 or 12.