KR20230139482A - Permeable color fixative composition with durability and surface protecting method of concrete road structure therewith - Google Patents

Abstract

The present invention relates to an eco-friendly water-soluble painting composition for concrete protection, capable of improving the beauty and durability of a concrete structure by forming a neutralization prevention layer from a concrete parent body and coating the layer for protection, using a substance including A.C emulsion containing colloidal silica. In accordance with the present invention, the eco-friendly water-soluble painting composition for concrete protection is formed an organic-inorganic combined manner to cause an organic material and an inorganic material to completely react, thereby having excellent materiality while being strong against direct light and preventing discoloration to protect a concrete structure for a long time. Moreover, the eco-friendly water-soluble painting composition for concrete protection permeates into the concrete parent body after application to improve physical or chemical characteristics such as tensile strength, compressive strength, acid and flame resistance of concrete, thereby preventing the neuralization of the concrete for a predetermined period or longer in spite of impact damage, and saving initial construction costs as well as having excellent economic feasibility.

Description

Concrete protective paint composition with improved wear resistance {PERMEABLE COLOR FIXATIVE COMPOSITION WITH DURABILITY AND SURFACE PROTECTING METHOD OF CONCRETE ROAD STRUCTURE THEREWITH}

The present invention relates to a paint composition for protecting concrete, and specifically relates to a paint composition that uses acrylic emulsion as a main ingredient to improve adhesion and durability, prevent neutralization of concrete, and prevent corrosion of reinforcing bars due to excellent salt resistance. will be.

In general, performance degradation due to decreased durability of concrete structures requires significant costs for repairs, reinforcement, construction and maintenance of bypass roads, etc., and if a collapse occurs, the ripple effects go beyond the economic and technical levels and affect the country and the government. Not only does it provide a factor that promotes anxiety about engineers, but it also leads to weakening competitiveness and loss of credibility in the international community. Therefore, the domestic construction environment has recently been changing towards maintenance of existing facilities and repair/reinforcement to improve performance rather than new investment. In order to efficiently manage existing facilities and prevent overlapping budget investments, maintenance and life extension of facilities are being implemented. Interest in such things is rapidly increasing. Due to recent developments in construction technology, concrete structures are becoming larger and higher-rise, and there is an increasing tendency to place emphasis on the appearance of the concrete structure itself and its harmony with the surrounding environment. The surface of concrete structures is easily contaminated by various external factors, causing damage or damage to the exterior. Damaged concrete structures must be restored to their original function by carrying out appropriate repairs and reinforcement depending on the degree of damage. Accordingly, development of structural repair/reinforcement and materials is actively taking place. As a maintenance method for concrete structures as described above, the method of surface painting on concrete structures is most commonly used to ensure long-term durability, watertightness, and stability due to water leaks and cracks in large structures. Resin-based paints such as epoxy, urethane, and fluoropolymer and cement-based paints are widely used as repair materials. However, most of the repair methods used with the above-described conventional materials take action only when performance deterioration occurs in earnest, so the repair effect often does not meet expectations. In particular, the resin system has a high risk of yellowing or falling off in the case of external structures exposed to direct sunlight, and because it does not penetrate into the concrete matrix, if the coating is removed due to surface lifting or impact, the concrete deteriorates immediately. ) has a problem where it starts again. In addition, conventional paints applied to the surface of concrete structures to maintain long-term adhesion to concrete and chemical resistance by preserving the lifespan of the concrete structure and preventing performance degradation, especially neutralization, contain pigments, anticorrosives, or extenders. However, these paints use only resin as an adhesive base and pigments, extenders, or anti-corrosive agents protect the material, so the adhesive strength is weak and the resin weathers in the air and loses moisture. There is also the problem that if it penetrates, it becomes oxidized or differentiated and loses its full-scale anti-corrosion function. On the other hand, products made only of organic products lack excellent adhesion to concrete structures and breathability, and as time passes due to shrinkage and expansion due to temperature changes, most urethane and epoxy paints use synthetic resins extracted from petroleum as a binder component. Organic solvents from petroleum are used as solvent components, but these components contain volatile substances such as phenol, formaldehyde, toluene, and xylene, which are organic heterogeneous materials on the inorganic base material. Due to the coating, there were various problems, such as reduced durability and weakened adhesion to concrete.

The present invention was made in consideration of the technical problems in the prior art described above, and the main purpose of the present invention is to improve additional characteristics while solving various problems caused by the slip characteristics of conventional road coating paints. In particular, it provides anti-slip properties while maintaining excellent adhesion of the paint composition for road application, and has excellent abrasion resistance and weather resistance, which are general characteristics required for paints. In addition, the curing speed is uniformly shortened to improve constructability. The object is to provide a coating composition for road application that has anti-inflammatory properties. Another object of the present invention is to provide a method for more easily producing a coating composition for road application having anti-slip properties and the excellent properties described above. In addition to the clear objectives described above, the present invention may also aim to achieve other objectives that can be easily derived by a person skilled in the art from this objective and the overall description of the present specification.

The present invention includes the steps of removing impurities, laitance, etc. from a concrete road structure using a planer, polisher, water jet, etc. to form a micro-pore layer, and first applying the eco-friendly penetrating color fixative composition to the formed micro-pore layer. It provides a method for protecting the surface of a concrete road structure, comprising the steps of secondary application of the eco-friendly permeable color fixative composition after curing, and curing. At this time, after secondary application of the eco-friendly permeable color fixer composition, the surface properties (hiding power) can be checked and the eco-friendly permeable color fixer composition can be further applied.

The eco-friendly water-soluble paint composition for protecting concrete according to the present invention is composed of an organic and inorganic composite type, so that organic and inorganic materials react in a complex manner, so it has excellent physical properties and is resistant to direct sunlight and does not discolor, so it can protect concrete structures for a long period of time. You can. In addition, the eco-friendly water-soluble paint composition for protecting concrete of the present invention penetrates into the concrete matrix after application and improves physical or chemical properties such as tensile strength, compressive strength, acid resistance, and salt resistance of concrete, so that even if damaged by impact, the concrete is neutralized for a certain period of time. can be prevented, the initial construction cost is reduced, and it is highly economical.

BRIEF DESCRIPTION OF THE DRAWINGS Various embodiments and/or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth to facilitate a general understanding of one or more aspects. However, it will also be appreciated by those skilled in the art that this aspect(s) may be practiced without these specific details. The following description and accompanying drawings set forth in detail certain example aspects of one or more aspects. However, these aspects are illustrative and some of the various methods in the principles of the various aspects may be utilized, and the written description is intended to encompass all such aspects and their equivalents. As used herein, “embodiment,” “example,” “aspect,” “example,” etc. may not be construed to mean that any aspect or design described is better or advantageous than other aspects or designs. . Additionally, the terms “comprise” and/or “comprising” mean that the feature and/or element is present, but exclude the presence or addition of one or more other features, elements and/or groups thereof. It should be understood as not doing so. Additionally, terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be referred to as a second component, and similarly, the second component may be referred to as a first component without departing from the scope of the present invention. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items. In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. It has the same meaning. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the embodiments of the present invention, have an ideal or excessively formal meaning. It is not interpreted as The concrete protective paint composition according to the present invention includes 100 parts by weight of acrylic emulsion, 15 to 30 parts by weight of magnesium silicate, 10 to 30 parts by weight of surface-modified metal oxide, and 10 to 10 parts by weight of titanium dioxide, based on 100 parts by weight of the acrylic emulsion. 30 parts by weight, 10 to 30 parts by weight of calcium carbonate, 5 to 15 parts by weight of propylene glycol, 5 to 15 parts by weight of methyl methacrylate, 1 to 3 parts by weight of amine compound, and 0.1 to 0.5 parts by weight of sodium phosphate. Examples include wealth. The acrylic emulsion of the present invention is an aqueous resin that acts as a binder, and is a mixture of styrene monomer and acrylate, and consists of at least 45% by weight of styrene monomer, 48 to 52% by weight of resin solid content, and 48 to 48% of ion exchange water. For example, at 52% by weight, the average particle size of the emulsion resin is 0.1 to 0.5 ㎛. The magnesium silicate of the present invention is talc powder, the softest among naturally occurring ores, with a Mohs hardness of about 1, and is relatively stable to acids and alkalis. In the present invention, it is included to provide chemical stability against acids or alkalis. If less than 15 parts by weight of magnesium silicate is mixed, the above-mentioned effects cannot be obtained, and if it exceeds 30 parts by weight, not only does the mechanical strength decrease, but the viscosity increases and workability deteriorates, so it is preferable to limit it to the above-mentioned range. do. The surface-modified metal oxide of the present invention includes 10 to 30 parts by weight of tungsten oxide, 1 to 3 parts by weight of a silane compound, 1 to 3 parts by weight of a fatty acid compound, 10 to 30 parts by weight of a nonpolar solvent, and triethylene glycol dimethane. It can be obtained by surface-modifying tungsten oxide by drying 0.1 to 1 part by weight of acrylate while stirring. For example, the tungsten oxide is WO3, and through surface modification, it can greatly improve the ultraviolet and infrared shielding effect as well as the salt resistance, increase the adhesion strength on the concrete surface, and suppress the deterioration of the coating film. It plays a role. The silane compound and the fatty acid compound form a water-repellent coating film on the surface of the tungsten oxide to prevent moisture or salt water from being absorbed into the concrete surface due to wettability. The fatty acid compound includes dodecanoic acid and tetradecanoic acid. For example, at least one of hexadecanoic acid and hexadecanoic acid may be selected. If a polar solvent is used instead of the non-polar solvent, for example, polymerization of silane compounds occurs, making dispersion or surface coating difficult, so it is preferable to use a non-polar solvent. This non-polar solvent may be selected from at least one of toluene, hexane, and pentane. The triethylene glycol dimethacrylate serves as a crosslinking agent between the silane compound and the fatty acid compound. If the surface-modified metal oxide is less than 10 parts by weight, it is difficult to provide the above-mentioned effects, and if it exceeds 30 parts by weight, adhesion decreases and workability and workability deteriorate as viscosity increases, so it is preferable to limit it to the above-mentioned range. . Calcium carbonate (CaCO3) of the present invention is intended to provide physical strength, durability, and breathability. If it is less than 10 parts by weight, it is difficult to achieve the above-mentioned effects, and if it exceeds 30 parts by weight, it has a higher solid content compared to acrylic emulsion along with magnesium silicate and titanium dioxide. If this becomes excessive, the adhesiveness is greatly reduced, so it is desirable to limit it to the above-mentioned range. Propylene glycol and methyl methacrylate of the present invention are added to increase the adhesion and strength of the coating film. If it is less than the above-mentioned range, it is difficult to expect the effect of improving adhesion and strength, and if it exceeds the above-mentioned range, breathability is reduced, so it is limited to the above-mentioned range. It is desirable to do so. The amine compound of the present invention reacts with sodium phosphate to improve flame resistance. The amine compound may be at least one selected from ethylene diamine, diethylene triamine, triethylene tetraamine, tetraethylene pentamine, pentaethylene hexamine, propylene diamine, dibutylene triamine, and hexamethylene diamine. . The eco-friendly penetrating color fixative composition includes 30 to 99% by weight of aqueous silica sol, 0.1 to 20% by weight of polyvinylidene fluoride, 0.1 to 20% by weight of methyl acrylate-acrylonitrile copolymer, and 3-mercaptopropyltrime. Toxysilane 0.1~20% by weight, cellulose acetate butyrate 0.01~10% by weight, pigment dispersion 0.1~15% by weight, Stellite dispersion 0.01~10% by weight, vitrified dispersion 0.01~10% by weight, and cermet dispersion 0.01%. It can be prepared by stirring and mixing ~10% by weight at a predetermined temperature (e.g., room temperature ~60°C) for a predetermined time (e.g., 2 to 24 hours). In addition, the present invention includes the steps of forming a micropore layer by removing impurities, laitance, etc. from the concrete road structure using a planer, polisher, water jet, etc., and first applying the eco-friendly penetrating color fixative composition to the formed micropore layer. A method for protecting the surface of a concrete road structure is provided, comprising the steps of applying, secondarily applying and curing the eco-friendly penetrating color fixative composition after curing. At this time, after secondary application of the eco-friendly permeable color fixer composition, the surface properties (hiding power) can be checked and the eco-friendly permeable color fixer composition can be further applied.

Claims (1)

A method of protecting the surface of a concrete road structure using the eco-friendly penetrating color adhesive composition according to any one of claims 1 to 3, wherein impurities or laitance of the concrete road structure are removed using a planer, polisher, or water jet to create micropores. Forming a layer, first applying the eco-friendly permeable color fixer composition to the formed micropore layer, secondly applying the eco-friendly permeable color fixer composition after the first application is cured, and curing. A method of protecting the surface of a concrete road structure, characterized in that.