KR20070095706A - The heavy weight or lightweight and high strength polymer concrete of composition, the composition method and the manufacture method - Google Patents

Abstract

A heavyweight or lightweight polymer concrete composition having high strength is provided to have specific gravity and characteristics suitable for a use thereof, recycle industrial waste, and produce a polymer concrete structure having improved corrosion resistance, chemical resistance, tensile strength, etc. A heavyweight polymer concrete composition having high strength is obtained by blending components: 5-30wt% of one selected from thermosetting resins or a mixture thereof as a binder based on the total weight of the blending; proper amounts of a hardener and a low shrinking agent suitable for the thermosetting resin used; 5-50wt% of industrial waste powder based on the total weight of the blending; a weight-increasing material in a sufficient amount to provide target specific gravity; and 0.2-5.0wt% of a fiber-shape reinforcing material to be added to increase bending/shear/impact strength of polymer concrete based on the total weight of the blending.

Description

Composition and composition method of ultra-light or ultra-high weight polymer concrete with high strength properties and the molding method of polymer concrete moldings having the properties {the heavy weight or lightweight and high strength polymer concrete of composition, the composition method and the manufacture method}

The present invention relates to a composition for forming ultra-light or ultra-high weight polymer concrete under conditions having high strength, and to a method of making a polymer concrete formulation using the composition, and to forming a polymer concrete molding of a specific shape. In order to improve the bonding strength with the chemical resin or cement used as the adhesive (binder) of the concrete-forming material, the surface of the weight-increasing material or weight-reducing material is processed and divided into appropriate sizes for each material and mixed, The present invention relates to a method of forming a concrete paste capable of controlling a specific gravity value of concrete itself by mixing a reinforcing material and a fine powder, and making a high strength polymer concrete molding in a specific shape.

As is well known, concrete is a material widely used in most existing construction and civil engineering fields such as roads, bridges, tunnels, buildings, etc., and has advantages such as compressive strength, durability, and economy, but in general, the thermal properties of concrete Durability deterioration due to neutralization by phosphorus moisture and other external conditions, less resistance to freezing and thawing, less chemical resistance, environmental damage caused by alkali leakage, difficult handling by heavy weight, difficulty in controlling artificial specific gravity, dust generation, etc. Except in the field of construction or civil engineering, the use of industrial materials or for specific purposes is limited.

In general, the main composition of concrete widely used for construction, civil engineering, etc. is to combine aggregates such as gravel and sand by mixing cement and water, and admixture (ash), fiber-type reinforcement (ash), etc. Concrete is used as a method of mixing the mixture to form the desired shape and curing.

Meanwhile, reinforced concrete structures are mostly used in civil engineering and construction among concrete structures.

In this case, the reinforcing steel included in the reinforced concrete structure is a reinforcing structural material that is put into concrete when constructing the structure, and has a drag on shear, bending, tensile or compressive loads acting on the structure, and prevents cracking of the concrete structure. To improve durability and lifespan.

However, when the reinforcing bar is corroded by acid, alkali, or salt, the resistance strength to the adhesive external force on the surface of the reinforcing bar decreases, and in a structure such as a bridge in which a cyclic load is continuously applied, the reinforcing bar due to corrosion and repeated load Fatigue increases, causing cracks in bridges and shortening its lifespan, causing serious obstacles.In particular, when reinforced concrete structures are placed in harsh environments such as beaches, offshore structures, bridges, and wastewater treatment facilities, the corrosion of steel bars Becomes more severe, which significantly reduces the durability of the structure.

Therefore, in order to prevent the corrosion of the reinforcing bar as described above, the surface of the rebar is coated with a chemical resin such as epoxy, silane (silicone), urethane, unsaturated polyester series, or a paint is used, but the durability, economy and adhesive properties This is a bad situation is difficult to exhibit the coating properties for a long time.

In addition, many aggregates are used to make concrete, and indiscriminate collection of aggregates is required for this purpose. Indiscriminate collection of aggregates is being done for this purpose, and it is recently emerging as a major cause of environmental destruction. Recycled or industrial wastes are used as aggregates, but reused aggregates have less durability and cohesion, which adversely affects the durability of concrete structures, thereby revealing the limitation of reuse.

On the other hand, as part of efforts to overcome the thermal properties of the above-mentioned concrete, polymer concrete has recently been applied to construction and civil engineering sites, and recently, fine powder such as blast furnace slag powder using unsaturated polyester resin, not cement, as a binder. Polymer concrete, also called resin concrete, which combines crude aggregates such as sand and sand, is being used as a part of reinforcing materials for sewer pipes, manholes and concrete structures, and the market will grow in the future.

In general, polymer concrete has been started from the application of organic polymer compounds to concrete bonds in order to overcome the water resistance, corrosion resistance, chemical resistance, flexural / tensile / shear strength, impact strength, etc. It is used for a limited purpose because of its poor economical efficiency.

Polymer concrete can be divided into several types in its composition and manufacturing method. The first method is the best physical property of hardened concrete and the least economical method. It does not use cement and uses thermosetting chemical resin as binder. There is resin concrete which is made by mixing and heat-hardening the crude aggregate whose powder and particle size is 5-25 mm,

Second is polymer concrete, which is made by mixing a large amount of emulsion-based chemical resin with water-dispersed chemical resin in cement concrete mixture.

Finally, general concrete hardened body is made by the method with the least economic properties of polymer concrete and is relatively economical, and the hardened body is immersed in the emulsion solution in which chemical resin is dispersed for a long time to absorb the polymer component, and then the absorbed polymer component is absorbed. There is a method of manufacturing polymer concrete similar to the coating made by drying, but all of them are economical and have limitations in their application.

However, any type of polymer concrete with a significantly higher manufacturing cost than cement concrete may be more economically advantageous than other industrial materials, and it is required to develop an appropriate use and a manufacturing method. The specific gravity and strength of the properties of hardened polymer concrete should be adjusted to meet the purpose.

As an example, the conventional cement concrete structure is mostly fixed in proportion to the overall volume, such as area, size, volume, etc., so that when the heavy weight, such as weight weight, or high specific gravity is required, the reinforcing bar is increased. Although a lot of scraps are put in practice, when a lot of rebar scraps are put in concrete, it is difficult to use due to the relatively low compressive, flexural, shear and impact strengths due to the low bonding strength between the reinforcing bars and the cement concrete. Cement concrete cannot be made, and concrete materials cannot be used if a very high specific gravity is required.

Therefore, in the case of the balance weight used to maintain the rotational balance and rotational force of the washing machine drum barrel, the weight is added to the plastic molded body formed with a space in order to obtain a high weight, and the remaining space is filled with general cement concrete ( Castings with a specific gravity of up to 3.5) and a specific gravity of 7.5 are imported from China and used.

This is due to the complex thermal properties such as deterioration of compressive / bending / shear strength and impact strength of the concrete structure, debris dropping from the surface, corrosion of iron materials due to moisture, and deterioration of durability. It is unsuitable for the purpose, the manufacturing cost is greatly increased, the maximum specific gravity to maintain the strength is limited, the size of the washing machine must be large, and the formwork, the plant size, and the number of workers are required to form a heavy and bulky concrete structure. There is a drawback in economic efficiency due to excessive consumption of not only production cost but also man-hour in overall construction.

In addition, the balance weight applied as part of the machine components may include risk factors such as damage to the machine operating elements, acceleration of wear, failure, etc., when concrete debris that may fall off the surface is generated.

Therefore, the current drum washing machine is used as a balance weight of the drum washing machine by painting an anti-rust coating or concrete surface reinforcement on the surface of the expensive casting or filled with steel scrap and concrete in a plastic molded body.

In order to maximize the weight (weight) of concrete, heavy steel (weight) is manufactured by putting reinforcing bars or steel scraps inside the concrete. At this time, the surface of the rebar or steel scrap is smoothed or plate-shaped, so that the adhesion to concrete is very low. Since it exists in the state of a simple content contained in the concrete, not the binder, it is a reason that the concrete structure is easily damaged when an external impact is transmitted, and also has the drawback that the durability of the concrete structure is reduced due to the corrosion of reinforcing steel or steel scrap. .

In addition, the existing polymer concrete mixing various synthetic resins and aggregates devised for the purpose of supplementing the problems of the existing cement concrete as described above has a drawback that commercialization is impossible due to the lack of economics due to the high price of the mixed synthetic resins.

In the case of lightweight concrete, the lightweight concrete including lightweight aggregates is used as coarse aggregate in the concrete, or the foaming system using aluminum to react and foam with cement is used to make foamed concrete to make lightweight concrete. Since only a weak concrete hardened body accompanied by a decrease in strength is made in proportion, the field of use is limited to the use of light partitions or floor noise reduction mortars in the construction field.

Therefore, the present invention is invented to solve the above-mentioned drawbacks, and to make the polymer concrete to make the specific gravity of the concrete very low or large in the state of securing the strength of the concrete for use in a limited use in construction, civil engineering, and other industrial fields The primary purpose is to provide a polymer concrete composition, a composition method of the polymer concrete blend, and a method of making a polymer concrete cured body.

By recycling the industrial waste by achieving the primary object according to the present invention, the thermal salt of concrete material, resistance to freezing and thawing, corrosion resistance, bending / shear strength reduction, water resistance, impact resistance, destruction of the ecological environment by alkali leakage, It is an object of the present invention to provide an economical polymer concrete structure with improved defects in durability, chemical resistance, etc. according to the use environment.

The polymer concrete of the present invention for achieving the above object in the composition, according to the purpose and use of the cured polymer concrete, according to the composition of the composition, the processing method of the composition, the mixing and mixing method and the molding / processing method as follows: Although it can be divided into branches, the same method is applied to the composition and the processing method of the composition.

The first is high-strength polymer concrete with high strength properties, which uses thermosetting chemical resin as a binder, but is processed with fine powder and atomized steel slag aggregates and cast scraps to increase unit weight (specific gravity). And steel scraps and steel scraps processed to a certain size, mixed at a certain ratio, put into a weight-increasing material, mixed with a fiber-shaped reinforcement, and generated after processing steel and steel materials (steel) The scrap is washed after acid treatment, the scrap is cut to a maximum size of 5 to 100 mm or less so that the binder adheres well, and an appropriate cast steel scrap (a chip shape having a maximum size of 25 mm or less) and an atomized steel slag Aggregate aggregates (ball shape, maximum size of 0.2 to 5 mm) closely together, polymer concrete is compacted, as well as voids Such that the combination of different materials in a well mixed is to provide a polymer concrete in the formulation and mixing, and a high temperature, high pressure and to maintain the molding status of the vibration strength and heavy;

The second is an ultra light polymer concrete that maintains high strength. In the first heavy weight high strength polymer concrete, the material for weight reduction is not added, and the weight reduction material such as lightweight aggregate is added in the same manner as the first. And to provide ultra-light polymer concrete that mixes and forms through vibration;

Thirdly, in the first, the weight-increasing material of the heavy and high-strength polymer concrete is made relatively large in size and placed in an airtight and vacuum space (mold), and the molten thermoplastic or thermosetting resin To provide polymer concrete (or heavy plastic molding, but hereinafter all referred to as polymer concrete) by means of injection or die casting which is instantaneously pushed into molding;

Fourth, in the high-strength polymer concrete having high strength, it is compounded and mixed with the binder as cement using the first composition, and the curing of the cement concrete cured with the composition is completed. Immersed in a resin solution or sprayed with an emulsion solution to sufficiently infiltrate the emulsion resin into the cured concrete, and then dried.

Or to provide polymer concrete as a method of mixing the polymer components into the concrete mix.

Hereinafter, the embodiment of the ultra-light or heavy polymer concrete to maintain the high strength of the present invention will be described in more detail by dividing into several,

Example 1.

First of all, in the case of applying the composition, composition method, and manufacturing / forming method of the high-strength polymer concrete having high strength listed above as an example to the balance weight of a washing machine,

One or more selected from thermosetting resins such as phenol resins, urea (urea) resins, melamine resins, alkyd resins, unsaturated polyester resins, polyurethane resins, phenol resins, epoxy resins, silicon (silicone) resins, or mixtures thereof. To 5 to 30% / wt of the total amount of

5 to 50 based on the total amount of the fine powder classified as blast furnace slag powder, steelmaking slag powder, coal sludge, sludge, and inorganic sludge produced by one or more industrial wastes selected from various sludges. At a rate of% / wt,

After mixing for 1 minute or more at a rotational speed of 30 to 150 rpm at room temperature in a vacuum state, the mixture is allowed to stand for 5 minutes or more to form a paste.

In this paste, the weight enhancing material is weighed and mixed as needed.

At least one fiber shape selected from fibrous reinforcement materials including steel fiber, nylon fiber, EVA fiber, glass fiber, carbon fiber, PP fiber, etc. added to enhance the bending / shear / impact strength of polymer concrete The reinforcing material is composed of 0.2 to 5.0% / wt of the total compounding amount and a hardening agent and a low shrinkage agent to reduce hardening shrinkage of the thermosetting resin to form a polymer concrete mixture.

In the above, the weight-increasing material is a spherical slag aggregate (the maximum size of the aggregate is 0.2 to 5 mm) atomizing steelmaking slag (conductor slag or steel slag) for strong bonding of polymer concrete. , Steelmaking slag aggregate (maximum size of aggregate 25mm), casting (article) scrap (chip shape, scrap generated from machining such as grinding, grinding, cutting, etc., the maximum chip size is about 25mm Many irregularities and pores are formed on the surface, which increases adhesion to the polymer paste, and the specific gravity is about 7.5.) Or scrap steel and scrap steel (steel) in machining of grinding, grinding and cutting iron materials. It is a spring-like linear or steel fiber machining chip that has a non-uniform surface and a fiber shape that can be combined with polymer concrete. Is.) Is composed of a mixture of at least one material selected, including the treatment of atomizing a steel slag aggregate 25%.

In addition, the reinforcing scrap and steel scrap (steel) scrap is cut to a size of 5 to 25 mm in size, degreased and put in an acid solution of 2 to 20% or more for 5 minutes to remove foreign substances such as corrosion and cutting oil on the surface Remove corrosion, wash with clean water and dry.

Looking at the molding method of the polymer concrete molded article of the present invention made of the composition described above.

The polymer concrete composition thus mixed was weighed into a 100 to 130% thickness of the molding thickness in a state where vibration was applied to the molding mold preheated to 80 to 120 ° C,

The mold is mounted on a hydraulic press-operated molding machine, pressurized for 5 seconds to 60 seconds at a pressure of 50 to 1000 kgf / cm2 at a temperature of 80 to 120 ° C. The pressure molding is divided into several steps to form a shape of the final molding by pressure molding under the above conditions;

The molded high-molecular weight polymer concrete molded product is removed from the molding machine and the molding mold and demolded;

The demolded molded product is placed in a hot air drying furnace at a temperature of 50 ° C. to 130 ° C. for 10 to 60 minutes or passed therethrough to completely cure.

In addition, when the curing method of the thermosetting chemical resin used is room temperature curing, it is not necessary to maintain the operating conditions of applying high temperature, and the input amount of the weight enhancing material is compared with the volume of the molding according to the specific gravity of the polymer concrete to be made. An amount corresponding to an area of up to 92% can be added, and the specific gravity at this time can be formed up to about 5.5 to 5.8, and the compressive strength is about 250 to 350 kgf / cm 2.

In the introduction of the weight enhancing material, the steelmaking slag aggregate subjected to atomization has a particle size of about 0.2 to 5 mm and a true specific gravity of 3.8 to 4.1, but the apparent specific gravity is inversely proportional to the size of the particle, usually 2.8 to 3.1. In the blending of the ultra-high weight (specific gravity) polymer concrete, it is always mixed at a ratio of 25 to 100% / wt in the weight enhancing material.

Atomizing steelmaking slag aggregate has a lot of pores in the interior, and serves to improve the impact resistance which can be thermally resistant to polymer concrete using thermosetting chemical resin, and to express a greater specific gravity of polymer concrete This atomizing steelmaking slag aggregate can be crushed and used in the form of powder, and in order to express more strength, it is achieved by making the maximum particle size of scraps used as a weight enhancing material smaller than 25 mm. Although the processing cost increases, the compounding amount of the chemical resin should be relatively high.

However, in the case of a compact structure having a relatively small volume of moldings, the maximum particle size of the scraps must be smaller than 25 mm to obtain an appropriate impact and compressive / bending / shear strength.

According to the formulation and molding method of the ultra-high-weight polymer concrete listed above, the balance weights (casting products made and used in China, specific gravity is 7.52) used in drum washing machines of domestic "S Electronics" were manufactured;

10% / Wt of steelmaking slag powder, 0.5% / Wt of steel fiber, steelmaking slag with atomizing to 5% / Wt of thermosetting chemical resin (unsaturated polyester resin: S825 manufactured by "Sewonseong") based on the total amount 35% / Wt, the curing agent 1.0% / Wt of unsaturated polyester resin, and other 59.5% / Wt, the casting chips and the rebar scrap are mixed in the same proportion, pressurized at a pressure of 25 kgf / cm2 at a temperature of 80 ℃ As a result, the balance weight of polymer concrete was 5.45, the compressive strength was 355㎏f / ㎠, the flexural strength was 175㎏f / ㎠, and there was no alkali leakage and flame retardance without any side dropping. It became the 1st grade synthetic resin molded object.

In addition, the heavy polymer concrete prepared as described above is a heavy weight sewer pipe, a heavy weight weight of a crane, a barrier wall, a balance weight of a rotating body, a center separation wall of a road, a bridge pier, and alternating repairs, in addition to the washing machine balance weights, which are the examples listed above. Liner, PC Block for Formation of Flat Grooves, Speeding Blocks for Roads, Riverside Crushing Blocks, Shore Blocks, Harbor Sofa Blocks or Construction Blocks, Artificial Reefs, Tetraports, Associate Blocks, Underwater Beams, Sewer Manholes This can be useful for.

Example 2.

Secondly, in the case of applying the composition, composition method, and manufacturing / forming method of the ultra-light polymer concrete having the above-mentioned high strength to the attached bicycle or the road block structure for securing the walkway,

In the mixing of the ultra-high polymer concrete listed above, the weight enhancing material may be mixed with the weight reducing material and mixed and mixed. The weight reducing material may include wood flour, sawdust, rice hull, and synthetic resin foam. Chips, artificial lightweight aggregates, waste tire chips, waste fibers, or fabric chips are all included, and at least one of the appropriate weight reduction materials is considered in consideration of characteristics such as strength of use, flame retardancy, and ultraviolet light of the ultra-light polymer concrete compact to be molded. If necessary, at least one selected from titanium dioxide and zinc oxide powder for UV protection is mixed at 0.5 to 5% / Wt of the resin content and perlite and vermiculite in addition to the fine powder used in the ultra-high polymer concrete. One or more selected from among porous porous ceramics such as, elite, diatomaceous earth, bentonite and zeolite And it characterized in that, but can be used by expanding the thermoplastic resin using a chemical physicochemical, At this time, it is difficult to ensure adequate strength.

Precast structures that can be installed on roads that cannot or cannot be formed, such as slopes, slopes, bridge sides, etc., cannot be constructed in the normal way. As such, it must be high strength, light weight, no durability degradation and freeze-thaw damage, and good walkability (slip, elasticity, water drainage, etc.) of the passenger.

Therefore, the above structure can be referred to as a structure that is easy to apply the lightweight polymer concrete according to the present invention, as an example for making this, as a result of manufacturing the ultra-light polymer concrete of the present invention,

Based on the total blending amount, the thermosetting chemical resin (unsaturated polyester resin, R2000HF manufactured by "Sewon") was 8.8% / Wt, and the coal ash powder was 30% / Wt of the total blending amount, and the light weight aggregate (the apparent specific gravity was 1.25, Aggregate is 25% / Wt of total compounding amount, hardener is 1.0% / Wt of unsaturated polyester resin, diluent of unsaturated polyester resin is 15.0% / Wt of unsaturated polyester resin, sunscreen The colorant titanium dioxide (# 200) contains 2.5% / Wt of unsaturated polyester resin, 15% / Wt of total blending amount, and 25% / Wt of total blending amount of waste tire chips. At low speed of 20 to 60 RPM for 1 to 3 minutes to stir the composition,

A glass fiber pad (fabric), perforated at equal intervals in a size of about 30 to 50 mm in diameter, is attached to a forming die at a temperature of 80 ° C. in the form of a molded article. The mixed composition was added to a state in which vibration was applied to the mixture, and the mixture was molded by applying vibration for 3 to 5 minutes while the feeding was completed, and the molded product was heated to a hot air drying furnace at a temperature of 50 ° C to 130 ° C as a formwork. It is to provide a series of methods to be completely cured by adding or passing through for about 10 to 60 minutes.

The hardened body had a compressive strength of 363 kgf / cm 2, and a hardened shear (breakdown) strength of 237 kgf / cm 2 in the state of containing iron (muscle) network. It is 1.38, and has a flame retardancy of the second degree of flame retardancy, but when the flame retardant additives are mixed, it has a flame retardancy of the first degree of flame retardancy, and contains sawdust and elastic waste tire rubber chips, improving the feeling of walking and impact resistance, and temperature The expansion and contraction of the polymer concrete is to be prevented and reduced.

The ultra-light polymer concrete according to the present invention can be usefully used for the production of ridge side aqueducts, road speeding prevention blocks, lightweight building blocks (panels), soundproof walls (panels) as well as blocks for forming bicycles and pedestrian roads.

Example 3.

Third, the composition, composition method, and manufacturing / forming method of the high-strength polymer concrete with high strength listed above are similar to those listed in Example 1, but the injection molding of the plastic molding in which the manufacturing method of the molding is generally used. Alternatively, the method of die casting is applied, and can be used when the size of the structure is relatively small, the manufacturing cost is high, and the content of the chemical resin is high, which is not economical, and the specific composition, composition, and molding / manufacturing method To

The chemical resin used for the ultra-high weight polymer concrete according to the present method may be applied to both a thermosetting chemical resin and a thermoplastic chemical resin, but it is preferable to use a thermoplastic chemical resin due to the limitation of curing time, and the thermoplastic resin may be PVC, polyethylene, PP resins, ABS resins, and the like, any of these may be used, and all of the common thermoplastic resins not specified herein may be used.

In addition, the weight enhancing material preferably has a minimum size of 5 mm or more and a maximum size of 100 mm or less for easy penetration of the molten chemical resin, and is preferably treated by acid treatment for degreasing and corrosion removal, washing with water, drying and cutting. An appropriate amount of rebar scrap or iron (steel) scrap and an atomized converter slag aggregate is mixed, and the mixture is placed in an injection or die casting mold, and the thermoplastic chemical resin mixed with the melted thermoplastic resin alone or the micropowder in the thermoplastic resin is made strong. It is possible to provide an ultra-high weight polymer concrete compact with high strength by pushing under pressure and forming a molding through cooling, and is mainly applied to small, high weight high strength polymer concrete weight.

Example 4.

Lastly, in the composition, composition method and manufacturing / forming method of high-weight polymer concrete having high strength,

After curing is completed, the cement concrete cured mixture mixed and molded by the first and second combinations using the above-described chemical resin binder alone as cement is immersed in an emulsion chemical resin solution, or The emulsion solution is sprayed to sufficiently infiltrate the emulsion resin into the cured concrete, and the high-strength ultra-high polymer concrete is made by drying in air at room temperature.

Cement is based on cement input with a weight ratio of 25% or less of water / cement ratio (W / C), without using chemical resin used as a binder for polymer concrete, as a binder in Portland, usually Class 1 cement. Calculate quantity and quantity,

Based on the cement input amount, the aggregate input amount is calculated based on the cement / aggregate (maximum size of the aggregate particles is 25 mm or less) ratio of 25% or more.

At least one fibrous reinforcement selected from fibrous reinforcement materials, such as steel fiber, nylon fiber, EVA fiber, glass fiber, carbon fiber, and PP fiber, which is added to increase the bending / shear / impact strength of polymer concrete. The dosage is calculated from 0.5 to 10% / wt of cement weight,

Here, the aggregate used is a spherical slag aggregate (spherical, aggregate) which is atomized with steelmaking slag (transformer slag or steel slag) for strong bonding of polymer concrete as the weight increasing material. Maximum size of 0.2 ~ 5mm), steel slag aggregate (maximum size of aggregate 25mm), casting (product) scrap (chip shape as scrap generated from machining such as grinding, grinding, cutting, etc.) It is 25mm in size, and many unevenness and pores are formed on the surface to increase adhesion to polymer concrete, and its specific gravity is about 7.5.) Or steel scrap and steel scrap (steel grinding, Spring-shaped, linear or steel fiber machining chips that occur in planing and cutting machining, with uneven surfaces and good bonding to polymer concrete The specific gravity is about 7.85.) At least one selected weight enhancing material including 35% of atomized steel slag aggregate is used.The maximum size of steel scraps and steel scraps is 5 ~. Cut into 100mm size, degreased and removed by putting it in an acid solution of 2 to 10% for 5 minutes or more to remove foreign matters such as surface corrosion and cutting oil, washed with clear water, and dried.

The amount of each polymer concrete composition was measured, and the weight-increasing material was put in a mixer rotating at 20 to 40 RPM, and then the fiber-shaped reinforcing material was added. After 1 minute or more, water was added. After the passage of time, cement is added and mixing is completed within 1 minute so that no material separation occurs, thereby forming cement mortar for high strength and heavy polymer concrete.

However, modified acrylic-based emulsion resins, acrylic emulsion resins, synthetic rubber aqueous solutions such as latex, SBR, EVA-based emulsion resins, PVA-based emulsion resins, and urethane-based resins so that cement may adhere well to weight enhancing materials. One or more additives selected from water-dispersible resins and cellulose may be mixed and used at a rate of 0.5 to 25% / Wt based on the weight of water, and a high performance water reducing agent or a fluidizing agent may be added to increase the fluidity of the cement mortar. In the weight enhancing material, the steelmaking slag subjected to atomization may be pulverized and mixed into fine powder to achieve high strength and high weight (weight).

The above-described cement mortar is molded into a high-strength high-strength polymer concrete molded body by using a hydraulic molding machine or a vibration molding machine, and steam cured for 5 to 8 hours so that the maximum temperature is 70 ° C. or less, and the cured molding is modified. 5 minutes to 6 hours in a resin solution mixed with one or two or more selected from an acrylic emulsion resin, an acrylic emulsion resin, a synthetic rubber aqueous solution such as latex, SBR, and a urethane-based water dispersion resin, or By spraying the resin solution, the molded product is impregnated with the polymer, and naturally dried at room temperature for 6 hours or more to form a high weight high strength polymer concrete molding.

As described above, the composition, composition method, and manufacturing / forming method of the high-strength polymer concrete having the high strength listed above are applied to the balance weights used in the "S" drum washing machine.

Cement, glass fiber reinforcement, water, modified acrylic emulsion resin, fine powder, cast scrap (chip) from atomized steelmaking slag ball as weight reinforcing material in weight ratio of 1: 0.025: 0.21: 0.05: 4.2 Mix at a ratio of 1.3, pressurize for 7 seconds in a hydraulic press with a compression force of 300 tons, cure in a steam curing chamber at a maximum temperature of 70 ° C. for 5 hours, and add 5 to a modified acrylic emulsion solution. After soaking for minutes, and dried for 3 hours at room temperature to prepare a balance weight of high-strength high-strength polymer concrete material.

The cured polymer concrete had a compressive strength of 246 kgf / cm 2, a flexural strength of 67 kgf / cm 2, a specific gravity of 3.52, and an absorption rate of 0.01%.

Therefore, this polymer concrete composition has limitations in strength, water resistance, and high specific gravity than the polymer concrete cured body using the above-mentioned chemical resin as a binder, but at a relatively low cost, higher weight than general heavy concrete (specific gravity 3.0) (Weight) is realized, and the hydraulic molding by mortar mixing is possible, thereby improving the productivity.

In addition, in the above-mentioned heavy cement mortar, a material for enhancing the weight of coarse particles having a maximum size of particles larger than 10 mm is placed, and a concrete composition having a water / cement (W / C) ratio of 30% or more is made. In order to prevent corrosion of the steel material embedded in the steel material and to improve the bonding strength with concrete, the water-based emulsified resin is increased and mixed, and the structural strength is reinforced by the steel material or the reinforcing wire (wire) network. Heavy weight (weight) polymer concrete, such as elevator weights, barriers and central separators, can be useful for making structures.

Finally, the present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the invention as claimed in the claims. Of course, such changes are within the scope of the claims.

As described above, the present invention is to properly process the industrial waste to be attached to the binder of the polymer concrete in order to produce a high-weight (weight) or ultra-light polymer concrete having a high strength by using industrial waste, changes in physical properties in the polymer concrete hardened body By using a polymer to prevent

First, it is possible to manufacture a high-weight (weight) polymer concrete hardened body having high strength properties at low cost,

Secondly, the recycling of industrial waste is promoted, and the environmental damage caused by the collection of concrete aggregate is reduced.

Third, productivity can be improved by using a hydraulic molding machine to produce a composition such as mortar mixture of polymer concrete having specific gravity and properties suitable for the intended use in a short time.

Fourth, there is no alkali leakage or absolute reduction, making it possible to create eco-friendly polymer concrete structures that can be installed in rivers and oceans.

Finally, it is possible to make polymer concrete structures with improved corrosion resistance, chemical resistance, impact resistance, tensile strength and shear / bending strength, which are called thermal properties of concrete structures. As it widens, the limits of concrete use have widened.

Claims (22)

In the composition of the polymer concrete having high strength and very high weight (specific gravity), One or more selected from thermosetting resins such as phenol resins, urea (urea) resins, melamine resins, alkyd resins, unsaturated polyester resins, polyurethane resins, phenol resins, epoxy resins, silicon (silicone) resins, or mixtures thereof. To 5 to 30% / wt of the total amount of the compound as a binder; Among the above-mentioned thermosetting resins, a curing agent and a low shrinkage agent suitable for the applied thermosetting resin are generally provided in an amount shown; 5 to 50 based on the total amount of the fine powder classified as blast furnace slag powder, steelmaking slag powder, coal sludge, sludge, and inorganic sludge produced by one or more industrial wastes selected from various sludges. % / Wt; As much as necessary to realize the target specific gravity of the weight enhancing material such as atomized steelmaking slag aggregate (ball), steelmaking slag aggregate and iron scrap; At least one fibrous reinforcement selected from fibrous reinforcement materials, such as steel fiber, nylon fiber, EVA fiber, glass fiber, carbon fiber, and PP fiber, which is added to increase the bending / shear / impact strength of polymer concrete. 0.2 to 5.0% / wt of the total amount of the compound; An ultra-high weight (weight) polymer (or resin) concrete composition having high strength characteristics, characterized in that it is blended. The method according to claim 1, The weight-increasing material is a spherical slag aggregate having a maximum size of about 0.2 to 5 mm after atomizing the steelmaking slag for strong adhesion / bonding with various mixed materials in the polymer concrete. 4.1 and an apparent specific gravity of 2.8 to 3.1); Steelmaking slag aggregate (specific gravity 2.8 to 3.9) having a maximum size of 25 mm; Machining scrap (specific gravity 7.52) of the chip-shaped cast (water) product generated in machining such as grinding, planing, cutting, etc. of the cast as a chip shape; Machining scraps (weight 7.85) in the form of spring-like linear or steel fibers generated in the machining of grinding, grinding and cutting steel (steel); Reinforcing bar scrap (weight 7.85); medium Mixing of at least one selected material, which must contain at least 25% of an atomized steel slag aggregate That is, in order to make a high strength and high weight (specific gravity), the steelmaking slag aggregate (ball) processed by atomization of the above-mentioned weight enhancing material is first put into a predetermined amount, and the compounding quantity of the relatively high specific gravity scraps and steelmaking slag aggregate is added. The composition method of the composition characterized by calculating. The method according to claim 1 or 2, The cast (water) scrap, the steel scrap and the scrap of iron material (steel) are cut to a size of 5 to 100 mm in a unit particle size; Degreasing and corrosion are removed by placing in an acid solution of 2 to 10% or more for 5 minutes in order to remove foreign matters such as corrosion sites (points) and cutting oil on the scrap surface; Washed in clear water; Completely dried at room temperature; The composition of the ultra-high weight (weight) polymer (resin) concrete having high strength, characterized in that the weight enhancing material is processed by the above process and method, and used as a concrete composition. The method according to claim 1, claim 2 or 3, Atomizing the steelmaking slag that is necessarily mixed with the weight enhancing material, and the spherical slag aggregate having a unit particle size of about 0.2 to 5 mm has a large amount of voids inside the particles and has a specific gravity of 3.8 to 4.1. In order to realize a high specific gravity of 2.8 to 3.1, the composition of ultra-heavy weight (specific gravity) polymer (resin) concrete having high strength is characterized in that it is pulverized so that the particle size is 0.5 to 200 µm using a grinder. . The method according to claim 1, wherein A low shrinkage agent, a curing agent, and a fine powder in liquid and powder form are added to the selected thermosetting chemical resin, mixed at a rotational speed of 30 to 150 rpm at room temperature in a vacuum state for at least 1 minute, and then left to stand at least 5 minutes to form a paste; Into the chemical resin paste, steelmaking slag aggregate (ball shape) subjected to atomization treatment was added to the fiber-like reinforcing material and the weight-increasing material, and mixed at a rotational speed of 30 to 150 rpm at room temperature in a vacuum state for 30 seconds to 1 minute. Making a heavy weight (weight) polymer concrete formulation with high strength; Immediately to this concrete blending, the steel material (steel) scrap which cut | disconnected the particle size to the predetermined unit size was thrown in, and mixed for 10 second-1 minute so that particle separation may not generate | occur | produce at the rotational speed of 30-150 rpm at normal temperature; A composition method for producing an ultra-high weight (weight) polymer (resin) concrete composition having a high strength is prepared by all the above composition steps. The method of claim 5, wherein 100 to 130% of the thickness of the ultra-high weight (weight) polymer concrete molded body to be molded while the mixture of the ultra-high weight (weight) polymer concrete composition, in which the mixing is completed, is formed in a state in which vibration is applied to a molding mold that is higher than room temperature and preheated to a maximum of 120 ° C. Metered in and metered in; Mounting and fixing the molding die to a hydraulically operated hydraulic molding machine; Press-molding the upper mold of the hydraulic molding machine at a temperature of 80 to 120 ° C. at a pressure of 50 to 1000 kgf / cm 2 for 5 seconds to 60 seconds while being subjected to vibration; However, the large molding having a large size is divided into several stages of the injection and press molding of the polymer concrete, and press-molded under the above conditions to form a shape of the final molding; The molded high-molecular weight polymer concrete molded product is removed from the molding machine and the molding mold and demolded; Ultra-high weight having high strength, characterized in that the molded product is molded into a hot air drying furnace at a temperature of 50 ° C to 130 ° C for 5 to 60 minutes, or allowed to pass through to be completely cured. (Specific) Molding method of polymer (resin) concrete molding. In high strength, ultra heavy polymer concrete structures, The specific gravity of the molded product is 2.3-6.0, the compressive strength is 250-800 kgf / cm <2>, using the polymer (resin) concrete which has high strength by the composition of Claims 1-4 and ultra-high weight (specific gravity), Balance weight used for washing machine characterized by flame retardancy of 1 or more flame retardant, heavy polymer sewer pipe, weight of elevator, weight of tower crane, firewall, balance weight used for rotating body of industrial machinery, central separation wall of road, Bridge pier and alternating liner for bridge, PC block for forming railway station platform, Speeding block for road, Block for riverside crushing block, Shore block, Port sofa block, Port building block, Artificial reef, Tetra port, Fish block, Underwater beam High strength, ultra-high weight (weight) polymer (resin) concrete moldings, including sewer manholes. In the high strength, ultra lightweight polymer concrete composition, One or more selected from thermosetting resins such as phenol resins, urea (urea) resins, melamine resins, alkyd resins, unsaturated polyester resins, polyurethane resins, phenol resins, epoxy resins, silicon (silicone) resins, or mixtures thereof. To 5 to 30% / wt of the total amount of the compound as a binder; Diluent of the selected resin in order to improve the viscosity of the resin or the workability of the paste 5 to 30% / wt based on the weight of the selected resin; 5 to 50 based on the total amount of the fine powder classified as blast furnace slag powder, steelmaking slag powder, coal sludge, sludge, and inorganic sludge produced by one or more industrial wastes selected from various sludges. % / Wt; One or more selected from chips of synthetic resin foam such as wood flour, sawdust, rice hull, urethane and PE, artificial lightweight aggregate, waste tire chips, waste fibers or chips of fabrics, alone or mixed, and the amount necessary to maintain specific gravity and strength and; At least one fibrous reinforcement selected from fibrous reinforcement materials, such as steel fiber, nylon fiber, EVA fiber, glass fiber, carbon fiber, and PP fiber, which is added to increase the bending / shear / impact strength of polymer concrete. 0.2 to 10.0% / wt of the total amount of the compound; The composition of the ultra-light polymer concrete, characterized in that for preparing and manufacturing the ultra-light polymer concrete with a suitable curing agent and low shrinkage agent for reducing the cure shrinkage of the selected thermosetting resin. The method of claim 8, At least one selected from titanium dioxide, zinc oxide, and carbon powder for UV protection and coloring; 0.5 to 5% / Wt of the resin content; By a prescribed amount a general flame retardant imparting additive such as phosphorus pentoxide which imparts flame retardancy to the chemical resin; High strength properties characterized in that the fine powder is selected from one or more selected from among porous porous ceramics such as perlite, vermiculite, illite, diatomaceous earth, bentonite, zeolite and the like, or mixed with the fine powder as defined in claim 8. Light weight polymer concrete composition. In the method of forming a super lightweight polymer concrete having a high strength using the composition of claim 8 or claim 9, The low-temperature shrinkage agent, hardener, fine powder, flame retardant (coloring agent), coloring and sunscreen agent, etc., which are liquid and powder, are added to the thermosetting chemical resin selected in the method of preparing the ultra-high weight polymer concrete according to claim 5, and the vacuum temperature is room temperature. At least 1 minute at a rotational speed of 30 to 150 rpm, followed by standing for at least 5 minutes to form a paste; A weight reduction material and a fiber-shaped reinforcement material selected in consideration of the strength and specific gravity of the molded product are introduced into the chemical resin paste; A composition method for making ultra-light polymer concrete with high strength, which is characterized in that blending for 30 seconds to 5 minutes at a rotational speed of 30 to 150 rpm at room temperature in a vacuum state to produce a high-weight (weight) polymer concrete mixture having high strength. In the method of making an ultralight polymer concrete structure, In preparing the molding using the composition of the ultra-light polymer concrete having a high strength of claim 8, claim 9 using the super lightweight polymer concrete having a high strength, not hardened according to the polymer concrete composition method of claim 10, Attaching a glass fiber pad (fabric), perforated at equal intervals, having a diameter of about 30 to 50 mm, to a structure forming formwork at room temperature to 80 ° C. in a shape of a molding; To the formwork was put super lightweight polymer concrete of high strength properties, which were mixed in a state where vibration was applied; Forming by applying vibration for 1 to 5 minutes while the feeding is finished; A molding method of an ultra-light polymer concrete molding having high strength characteristics, characterized in that the molded product is put into a hot air drying furnace at a temperature of 50 ° C. to 130 ° C. for 10 to 60 minutes or completely to be completely cured, such as formwork. In high strength, ultra lightweight polymer concrete structures, Using the ultralight polymer concrete composition having the high strength of claim 8 or claim 9, the specific gravity is 1.2-2.0, the compressive strength is 180-450 kgf / Attached pedestrian and bicycle road block, ridge side channel waterway, road speed prevention block, light weight building block (panel), soundproof wall (panel), polymer sewer pipe, protective wall, bridge Ultra-light, including pier and alternating repair liners, road speed prevention blocks, riverside crushing blocks, lakeside blocks, harbor sofa blocks, harbor construction blocks, artificial reefs, tetraports, fishery blocks, underwater beams, sewer manholes, High strength polymer concrete structures. In the composition of high weight polymer concrete, To 25 to 50% / Wt of resin obtained by singly or mixing at least one resin selected from thermoplastic resins including PVC, polyethylene, PP resin, ABS resin and the like; Fine powders classified as at least one industrial waste selected from blast furnace slag powder, steelmaking slag powder, and atomized steelmaking slag aggregate (ball) powder are 0 to 30% / wt based on the chemical balance. ; Realize the specific gravity of any one or more selected materials from weight enhancing materials such as atomized steelmaking slag aggregates (balls), steelmaking slag aggregates and iron scraps having a unit particle size of at least 5 mm and a maximum of 80 mm A composition of polymer concrete having high strength and ultra high weight (specific gravity), which are mixed and formed in an amount necessary to make them. In preparing a high-strength high strength polymer concrete molding with the polymer concrete composition of claim 13, As described in claim 3, the steel or steel scraps are cut, degreased by acid treatment, corrosion removed, washed with water, and dried so that the particle size of the material selected from the weight enhancing material is 5 to 100 mm. ; The selected weight enhancing material is mixed, and the mixture is metered into an appropriate amount so as to be evenly dispersed in the injection or die casting mold; A method for forming an ultra-high weight polymer concrete molding having high strength characteristics, characterized in that the molding is produced by a method of general injection and die casting in which a molten thermoplastic resin alone or a thermoplastic chemical resin mixed with a fine powder in a thermoplastic resin is pressed at a high pressure. In the composition that has a high weight and high strength properties, and to form a polymer mortar using cement as a binder, Portland A water / cement ratio (W / C) of 25 wt% or less is usually used as a binder for cement and water in which cement and unit quantities are calculated based on the cement input amount. Aggregated steel slag aggregates (balls), cast (products) scraps (chips), and rebars, based on the amount of cement input, based on the amount of cement added to the cement / aggregate ratio of 25 mm or less at a weight ratio of 25% or more. A weight increase material input amount and type such as scrap and iron material (steel) scrap, each of which is calculated to include at least 25% of the steelmaking slag aggregate (ball) subjected to atomization; At least one fibrous reinforcement selected from fibrous reinforcement materials, such as steel fiber, nylon fiber, EVA fiber, glass fiber, carbon fiber, and PP fiber, which is added to increase the bending / shear / impact strength of polymer concrete. 0.5-10% / wt of cement weight; Modified acrylic emulsion resin, acrylic emulsion resin, latex, synthetic rubber aqueous solution such as latex, SBR, EVA emulsion resin, PVA emulsion resin, urethane series At least one additive selected from water dispersion resins and celluloses, based on the weight of water, 0-25% / Wt; A composition of heavy and high strength polymer mortar, comprising an appropriate amount of a high performance fluidizing agent, a reducing agent, and the like. The method of claim 15, Spherical slag aggregate having a size of about 0.2 to 5 mm by atomizing the steelmaking slag necessarily mixed with the weight enhancing material, according to claim 3, wherein the weight enhancing material is a particle. There are many voids inside, so the specific gravity is 3.8 ~ 4.1 and the apparent specific gravity is 2.8 ~ 3.1, so that the particle size is 0.5 ~ 200㎛ by using a grinder to realize a high specific gravity, characterized in that it is used as a composition A composition of heavy weight (specific gravity) polymer mortar having high strength. In the method of forming a polymer mortar using the high-strength (weight) polymer mortar composition of claim 15 and claim 16, Measuring the input amount of the polymer concrete composition, and putting the weight enhancing material in the mixer rotating at 20 to 40 RPM; Then put the reinforcement in the shape of fibers; After at least 1 minute, add water; After 2 minutes or more, cement is added and the mixing is completed within 1 minute so that no material separation occurs, thereby forming a cement mortar for high strength and high polymer concrete. Way. In the method of making a high-strength high strength polymer mortar molded article using the mortar blend of claim 17 or the composition of claims 15 and 16, The blended polymer mortar is placed in a molding die (or mold), molded into a high-strength high-strength polymer mortar molded body using a hydraulic molding machine or a general mortar product using a vibration molding machine, and the maximum temperature is 70 ° C. or less. Steam curing for 8 hours; 5 minutes to 6 minutes in a cured molding material mixed with at least one selected from modified acrylic emulsion resin, acrylic emulsion resin, synthetic rubber aqueous solution such as latex, SBR, and urethane-based water dispersion resin The polymer is impregnated into the molding by adding in time or spraying the resin solution; A method for forming and manufacturing a heavy polymer mortar molded article having high strength characteristics, characterized in that the product is naturally dried at room temperature for at least 6 hours to produce a high weight high strength polymer mortar formed article. The method of claim 18, Into the molding die (or mold), the blended polymer mortar is impregnated with a wire (near) network or a thermosetting chemical resin in advance, and the cured glass fiber structure is put therein, and then the blended polymer mortar is added. A method for forming and manufacturing a heavy polymer mortar molding, characterized in that The method according to claim 15 and 16, The water / cement (W / C) ratio is at least 30%; Composition of heavy polymer concrete, characterized in that the mixture of the fine aggregate and coarse aggregate generally used in the weight reinforcement material according to claim 2 and claim 3 and claim 4 and reinforced concrete. In high strength, heavy polymer mortar structures, Claims 20 to 19 according to the composition, the composition method and the molding and manufacturing method of the molded article, the molded article has a specific gravity of 2.3 to 3.5, the compressive strength is 180 ~ 350kgf / ㎠, non-flammable Balance weights used in washing machines characterized by improved water resistance, corrosion resistance, impact resistance, bending / shear strength, balance weights used in elevators, weights of tower cranes, firewalls, rotating bodies of industrial machinery, High-strength, heavyweight (weight) polymer mortar moldings, including central separation walls of bridges, bridge and alternating liners for bridges, riverside scour prevention blocks, shore banks, artificial reefs, tetrapots, eoso blocks, submerged beams, sewer manholes, etc. . In high strength, heavy polymer concrete structures, Made of the composition according to claim 20, the molded article has a specific gravity of 2.3 to 3.5, a compressive strength of 200 to 500 kgf / ㎠, non-flammable, improved waterproof, corrosion resistance, impact resistance, bending / shear strength, etc. Balance weights for washing machines, weights for elevators, weights for tower cranes, barriers, balance weights for rotating bodies of industrial machinery, central separation walls of roads, bridge pier and shift repair liners, riversides A high strength, heavy weight (weight) polymer mortar molding comprising an anti-refractory block, a revetment block, an artificial reef, a tetrapot, a fish block, an underwater beam, a sewer manhole, and the like.