KR20210078422A - Reactive latex chip composition and cross-sectional composite reinforcement method for buffering interlayer vibration noise of structure - Google Patents

Abstract

The present invention relates to a latex-based modified mortar reactive latex chip composition. The latex-based modified mortar reactive latex chip composition, based on 100 wt% of liquid latex, comprises: 25 to 40 wt% of latex aggregate; 15 to 35 wt% of reactive natural latex resin particles; 10 to 25 wt% of vegetable oil; 5 to 15 wt% of latex chip; 0.3 to 1.0 wt% of carbon fiber powder; 0.1 to 1.0 wt% of a fast accelerator; 3 to 10 wt% of a reactant; 0.1 to 3 wt% of a polymer modifier; 0.5 to 3 wt% of a corrosion inhibitor; 0.5 to 5 wt% of a peeling inhibitor; 1 to 5 wt% of an adhesion promoter; 0.5 to 1.0 wt% of an emulsifier; 0.2 to 1.5 wt% of a wetting agent; and 0.1 to 1.0 wt% of a substance containing an amine. According to the present invention, vibration according to external temperature change and load, which are known causes of cracking and deterioration of concrete structures, the vibration caused sometimes from natural disasters such as earthquakes, and deterioration and vibration noise of the concrete structure are buffered by applying a reactive latex-based cross-sectional composite reinforcement method that is strong against vibration and external environmental changes.

Description

Reactive latex chip composition and cross-sectional composite reinforcement method for buffering interlayer vibration noise of structure using the same

The present invention relates to a cross-sectional composite reinforcement method for buffering inter-floor vibration and noise of a structure, and more particularly, to a cross-sectional composite reinforcement method using a reactive liquid latex and latex chip mixed composition.

The problems of the cross-section repair method used in the prior art are as follows. In general, due to natural disasters such as moisture and external temperature changes, sometimes earthquakes, etc., the structure becomes white, deteriorated and neutralized, so that the common performance cannot be expressed, and cracks occur up to the upper pavement layer. In addition, separation of repair materials or damage to joints may occur due to deterioration of bonding performance with the existing structure surface. In the case of the prior art, cement is mixed as the main material, and the general cement mortar and resin are mixed and applied to the surface as a rigid material rather than a soft material.

In addition, some styrofoam and rubber products are inserted in order to solve the noise and vibration, but these also harden into a contracted state over time and do not exhibit their proper functions. After all, for these reasons, excessive vibration between walls or floors is caused, which negatively affects the safety of structures, and further, causes adverse effects on the living environment due to noise.

Accordingly, there is a need for a method that can fundamentally solve the causes of surface deterioration and noise and vibration of concrete structures.

1. Republic of Korea Registration Publication No. 10-0356104 "Polymer cement mortar cross-section restoration repair method using spray method" (September 14, 1999) 2. Republic of Korea Registration Publication No. 10-1712378 “Method of repairing and reinforcing concrete structure using alkali recovery rust prevention and inorganic polymer mortar composition” (2016.09.07.)

An object of the present invention is to protect a concrete structure from deterioration and vibration noise by applying a reactive latex-based cross-sectional composite reinforcement method that is strong against external temperature changes and natural disasters such as earthquakes and moisture to a concrete structure.

The present invention provides a reactive latex chip composition to achieve the above object.

The reactive latex chip composition contains 25 to 40 parts by weight of latex aggregate, 15 to 35 parts by weight of reactive natural latex resin particles, 10 to 25 parts by weight of vegetable oil, 5 to 15 parts by weight of latex chips, based on 100 parts by weight of liquid latex, 0.3 to 1.0 parts by weight of carbon fiber powder, 0.1 to 1.0 parts by weight of an initial velocity accelerator, 3 to 10 parts by weight of a reactant, 0.1 to 3 parts by weight of a polymer modifier, 0.5 to 3 parts by weight of a corrosion inhibitor, 0.5 to 5 parts by weight of a peeling inhibitor, It may contain 1 to 5 parts by weight of an adhesion promoter, 0.5 to 1.0 parts by weight of an emulsifier, 0.2 to 1.5 parts by weight of a wetting agent, and 0.1 to 1.0 parts by weight of a substance containing an amine.

Another aspect of the present invention is to provide a reactive latex chip block to achieve the above object.

The reactive latex chip block is made of a reactive latex chip composition layer made of the reactive latex chip composition in a plate shape, and can be prepared by further attaching a plate-shaped latex-based reinforcing layer to the reactive latex chip composition layer made in the plate form. have.

The latex-based reinforcing layer includes a latex component, and the latex-based reinforcing layer is a latex-based styrofoam (Expanded Poly Styrene, EPS), a latex-based honeycomb paper board (HPB), or a latex-based rubber polymer (Ethylene-Vinyl). Acetate copolymer, EVA).

At this time, the horizontal and vertical length of the latex-based reinforcing layer used may be at least 20 to 100 cm, respectively, and may be a plate-type latex-based reinforcing layer without perforation, or the plate-shaped latex-based reinforcing layer using a perforated plate-type latex-based reinforcing layer. A reactive latex-based block may be manufactured so that the reactive latex chip composition can be placed therein.

The reactive latex chip composition layer is prepared to have a thickness of 1 to 7 cm, and the latex-based reinforcing layer uses a latex-based reinforcing layer having a thickness of 1 to 3 cm. The reactive latex chip block does not exceed 10 cm, and when manufactured to a thickness exceeding 10 cm, the thickness of the corresponding construction surface is too thick, and a step with the non-construction surface may occur.

When applying the reactive latex chip block in the actual field, place the plate-type latex-based reinforcing layer on the upper side and the reactive latex chip composition layer on the lower side, or change the direction depending on the situation to put the reactive latex chip composition layer on the upper part and plate-shaped latex It can be constructed such that the reinforcing layer is positioned downward, and it can also be constructed using a reactive latex chip block manufactured only with a plate-type latex reinforcing layer.

Another aspect of the present invention is to provide a cross-sectional composite reinforcement method for buffering interlayer vibration and noise using a reactive latex chip composition in order to achieve the object.

The cross-sectional complex reinforcement method for interlayer vibration and noise buffering using the reactive latex chip composition is a reactive latex-based cross-sectional complex reinforcement method, the first step of treating the surface of the construction surface; A second step of applying an adhesive to the surface treated in step 1 after the rust preventive treatment; Step 3 of installing a reactive latex chip block after completing the second step; After the completion of step 3, it may include a step of coating with a surface strengthening agent.

The reactive latex chip block may include a layer made of the reactive latex chip composition of claim 1. The reactive latex chip block may have a latex-based reinforcing layer attached to the layer made of the reactive latex chip composition of claim 1.

The second step is to further include a reactive latex-based block prepared by attaching a latex chip composition layer or a latex chip composition layer and a latex-based reinforcing layer in which the reactive latex chip composition is hardened into a plate shape after applying the rust inhibitor or adhesive. can

According to the present invention as described above, from vibrations caused by external temperature changes or natural disasters, which are known causes of cracks and deterioration of concrete structures, reactive latex-based cross-sectional reinforcement methods that are strong against vibration and moisture are applied to the concrete structures. It has the effect of protecting it from deterioration and vibration noise.

1 is a flowchart of a cross-sectional composite reinforcement method using a reactive latex chip composition according to an embodiment of the present invention.
Figure 2 is a side view of the construction surface in which the cross-section composite reinforcement method using the reactive latex chip composition according to an embodiment of the present invention is carried out.
3 is an actual image of a reactive latex chip block manufacturing process and reactive latex chip block according to an embodiment of the present invention.
4 is a construction image of a cross-sectional composite reinforcement method using a reactive latex chip composition according to an embodiment of the present invention.
5 is an image showing surface deterioration and cracks caused by general cement mortar construction.
6 to 8 are images of test reports according to the construction of an embodiment of the present invention.
9 is a comparison table of the surface, cross-section repair method of the reactive latex-based complex repair method of the present invention and the prior art.

The current section repair is limited to the one-time coating method by mixing general cement mortar with resin and water on site, and has problems such as reflection cracks and poor adhesion that occur after construction. However, the reactive latex-based composition contains latex resin particles that react with moisture to exhibit waterproofing performance, and depending on the depth of cross-sectional breakage, even if moisture and salt penetrate after 1 to 3 applications, the latex resin particles react and inhibit crack And it maximizes the effect of neutralizing concrete and preventing corrosion. In addition, the durability against cracking and adhesion is also to improve the problems of the existing concrete cross section by maintaining the adhesion state with the existing surface with ductility rather than rigidity.

The present invention provides a cross-sectional composite reinforcement method using a reactive latex chip composition and a reactive latex chip composition using the same in order to improve the problems of cross-section repair materials and construction of conventional concrete structures.

The reactive latex chip composition contains 25 to 40 parts by weight of latex aggregate, 15 to 35 parts by weight of reactive natural latex resin particles, 10 to 25 parts by weight of vegetable oil, 5 to 15 parts by weight of latex chips, based on 100 parts by weight of liquid latex, 0.3 to 1.0 parts by weight of carbon fiber powder, 0.1 to 1.0 parts by weight of an initial velocity accelerator, 3 to 10 parts by weight of a reactant, 0.1 to 3 parts by weight of a polymer modifier, 0.5 to 3 parts by weight of a corrosion inhibitor, 0.5 to 5 parts by weight of a peeling inhibitor, 1 to 5 parts by weight of an adhesion promoter, 0.5 to 1.0 parts by weight of an emulsifier, 0.2 to 1.5 parts by weight of a wetting agent, and 0.1 to 1.0 parts by weight of a substance containing an amine.

The liquid latex may be a liquid natural latex rubber or a liquid butadiene rubber, preferably, a liquid natural latex rubber is used. The latex aggregate is an aggregate coated with latex, and more specifically, it may correspond to a limestone aggregate with a density of less than 8 mm coated with latex.

The reactive natural latex resin particles are a kind of additive that reacts by mixing liquid natural latex, latex aggregate, and latex chips to harden, and ethylene butadiene, which is a synthetic latex resin containing styrene and butadiene, may correspond to this.

Cellulose fiber powder or mineral fiber powder may be used as the carbon fiber powder. The initial velocity accelerator is for accelerating the curing time, and preferably a mixture containing a glycerin compound and a resin acid may be used. The reactant may be gilsonite powder. Gilsonite is a natural bitumen produced by alteration in crude oil.

The polymer modifier may be styrene-butadiene-styrene (Styrene-Butadine-Styrene, SBS). The corrosion inhibitor may be a polyurethane-acrylic polymer resin.

The adhesion promoter may be hydroxyethyl acryloyl phosphate. The wetting agent is a material that promotes retention of moisture, and preferably propylene oxide may be used.

The material containing the amine is an amine-based shrinkage reducing agent, an ether-based solvent such as diethyl ether, diisopropyl ether, and di-n-butyl ether. and preferably diethyl ether.

The latex chip is a soft material in the form of Styrofoam granules made of latex like a capsule, and the particle size is 1 to 5 mm.

The emulsifier is used for stable mixing of materials such as asphalt liquid and polymer latex, and less than 0.5 parts by weight does not induce stable mixing of the materials, and more than 1.0 parts by weight does not change significantly. The emulsifier maintains the particles of the reactive latex chip composition in a suspended state and determines the decomposition time, and preferably a cationic fatty acid amine-based bitumen emulsion emulsifier may be used.

The vegetable oil is extracted from the flesh and seeds of plants, and functions such as preventing the penetration of moisture. If it is out of the range of 10 to 25 parts by weight, the effect of moisture penetration is weak or the quality is deteriorated because it is not in harmony with other materials. can open The vegetable oil is wood oil, leaf oil, rapeseed oil, sunflower oil, etc., which are unsaturated fatty acids that are not sensitive to external temperature changes, are environment-friendly, and serve to increase the function of surface repair materials that must maintain the initial viscosity by itself.

The anti-peel agent is liquid, and is used to prevent the composition from peeling off the structure. Less than 0.5 parts by weight has a weak peel-off preventing effect, and more than 5 parts by weight has no significant difference in the peel-off prevention effect. The peeling inhibitor is a polyphosphoric acid-based liquid type peeling inhibitor and stabilizes the latex component to suppress peeling from the previously attached surface.

Another aspect of the present invention is to provide a reactive latex chip block to achieve the above object.

The reactive latex chip block may include a layer made of a reactive latex chip composition, and more specifically, it is manufactured by attaching a latex chip composition layer made of the reactive latex chip composition into a plate shape and a plate-shaped latex-based reinforcing layer .

The reactive latex chip composition layer is prepared to have a thickness of 1 to 7 cm, and the latex-based reinforcing layer uses a latex-based reinforcing layer having a thickness of 1 to 3 cm. The reactive latex chip block does not exceed 10 cm, and when manufactured to a thickness exceeding 10 cm, the thickness of the corresponding construction surface is too thick, and a step with the non-construction surface may occur.

Another aspect of the present invention is to provide a cross-sectional composite reinforcement method for buffering interlayer vibration and noise using a reactive latex chip composition in order to achieve the object.

The cross-sectional complex reinforcement method for interlayer vibration and noise buffering using the reactive latex chip composition comprises: 1 step of treating the surface of the construction surface with a reactive latex-based cross-sectional complex reinforcement method; A second step of applying an adhesive to the surface treated in step 1 after the rust preventive treatment; Step 3 of installing a reactive latex chip block after completing the second step; After the completion of step 3, it may include a step of coating with a surface strengthening agent.

The reactive latex chip block may include a layer made of a reactive latex chip composition. The reactive latex chip block may have a latex-based reinforcing layer attached to a layer made of a reactive latex chip composition.

The reactive latex chip block may be manufactured by attaching a latex chip composition layer or a latex chip composition layer and a latex-based reinforcing layer made of the reactive latex chip composition in a plate shape.

Hereinafter, the present invention will be described in detail.

1 is a flowchart of a cross-sectional composite reinforcement method using a reactive latex chip composition according to an embodiment of the present invention. As shown, the cross-sectional composite reinforcement method using the reactive latex chip composition is a surface treatment step of the construction surface to remove the deterioration part of the construction surface, a step of treating a rust inhibitor to prevent corrosion of the steel exposed to the construction surface, or an adhesive. It includes a step of applying, a step of installing a reactive latex chip block that repairs the cross section, and a step of coating the surface with an expression enhancer.

The surface treatment step of the construction surface to remove the deteriorated part cleans the whitening, deteriorated and neutralized surface of the structure, and in particular, the surface of the repair and reinforcement method for solving problems such as cracks, peeling, and dropping on the surface of the concrete structure. This is a step in which a rust preventive agent and a composition for repair and reinforcement, which will be described later, are easily attached to the concrete construction surface by tidying up.

The step of treating the rust inhibitor to prevent corrosion of the steel exposed to the construction surface is mainly performed by applying a coating-type rust preventive agent to the reinforcing bar exposed to the outside of the concrete, and the coating-type rust preventive agent mainly consists of an antioxidant, so that rust recurs and prevent corrosion of reinforcing bars.

The step of applying the adhesive is applied for adhesion to concrete, repair and reinforcement of concrete structures, filling and repair of cracks, adhesion of tiles, bricks, marble, metal glass block silicon, etc., adhesion enhancer of mortar, adhesive for molding and It is preferable to select and use one having a strong adhesive force.

In the step of installing the reactive latex chip block repairing the cross section, it is easy to control the volume of the construction surface, and compared to the existing mortar repair method, it is completely penetrated into the deteriorated concrete surface, so integration is very easy, and it is ductile. Adhesion can be maintained. At this time, it is possible to add moisture and crack suppression effect through the step of installing the reactive latex chip block.

Hereinafter, the present invention will be described in more detail through examples. These examples are only for illustrating the present invention, and it will be apparent to those skilled in the art that the scope of the present invention is not to be construed as being limited by these examples.

Example 1.

For 100 g of liquid natural latex rubber, 30 g of latex aggregate, which is limestone aggregate, with a density of less than 8 mm coated with latex, 25 g of ethylene butadiene, which is a reactive natural latex resin particle, 15 g of rapeseed oil, latex chips ( 10 g of styrofoam granules in the size range of 1 to 5 mm made), 0.5 g of cellulose fiber powder, 0.6 g of initial velocity accelerator (product name Kick-it, manufacturer SMOOTH-ON/USA), 7 g of gilsonite powder, styrene-butadiene- 1.5 g of styrene (SBS), 2 g of polyurethane-acrylic polymer resin, 3 g of polyphosphoric acid solution, 2.5 g of hydroxyethyl acryloyl phosphate, 0.7 g of bitumen emulsion, 0.8 g of propylene oxide and diethyl 0.6 g of ether is mixed at a time at room temperature (25° C.) to prepare a reactive latex chip composition.

Example 2.

The reactive latex chip composition prepared in Example 1 was poured into a mold on the plate-shaped latex-based reinforcing layer to shape it, and then hardened to prepare a reactive latex chip block.

For the latex-based reinforcing layer used at this time, latex-based styrofoam was used.

The manufacturing process of Example 2 and the image of the plate-shaped latex-based reinforcing layer are shown as an image in FIG.

3A to 3C are actual images of a reactive latex chip block manufacturing process and reactive latex chip block. In Figure 3c, the latex-based composition layer corresponds to the latex chip composition layer of the present invention, and the latex-based sound insulation layer corresponds to the latex-based reinforcing layer of the present invention.

Example 3.

After cleaning the surface of the construction surface and removing dust using a high-pressure sprayer, a latex-based coating-type rust preventive agent (Joy Korea Co., Ltd., model name: R-99 rust preventive agent) is applied and dried. When the rust inhibitor is dried, a latex-based adhesive (Myeong-Kwang Chemical Co., Ltd., model name: NETTEX) is applied, and then the reactive latex chip block prepared in Example 2 is installed on the construction surface. After that, the latex stock solution, which is a surface strengthening agent, is treated twice.

The test report tested by carrying out Example 3 is shown in FIGS. 6 and 7,

The test report of the experiment carried out in Example 3 is shown in FIG. 8, and the photo constructed by carrying out Example 3 is shown in FIG.

Referring to FIG. 8, it received a grade of 1 in the light standardized floor impact sound. It was graded 2 in the weight normalized floor impact sound. Therefore, it can be seen that this is effective in reducing inter-floor noise.

Referring to FIG. 4, it can be seen that the concrete structure is constructed using a reactive latex chip block on the floor, while surface deterioration and cracks occurring when the floor is constructed with general cement mortar are shown in FIG.

Above, a specific part of the present invention has been described in detail, for those of ordinary skill in the art, it is clear that this specific description is only a preferred embodiment, and the scope of the present invention is not limited thereby. something to do. Accordingly, it is intended that the substantial scope of the present invention be defined by the appended claims and their equivalents.

Claims (6)

Based on 100 parts by weight of liquid latex, 25 to 40 parts by weight of latex aggregate, 15 to 35 parts by weight of reactive natural latex resin particles, 10 to 25 parts by weight of vegetable oil, 5 to 15 parts by weight of latex chips, 0.3 to 1.0 parts by weight of carbon fiber powder parts, 0.1 to 1.0 parts by weight of an initial velocity accelerator, 3 to 10 parts by weight of a reactant, 0.1 to 3 parts by weight of a polymer modifier, 0.5 to 3 parts by weight of a corrosion inhibitor, 0.5 to 5 parts by weight of a peeling inhibitor, 1 to 5 parts by weight of an adhesion promoter A reactive latex chip composition comprising 0.5 to 1.0 parts by weight of an emulsifier, 0.2 to 1.5 parts by weight of a wetting agent, and 0.1 to 1.0 parts by weight of a material containing an amine.
A reactive latex chip block comprising a layer made of the reactive latex chip composition of claim 1.
3. The method of claim 2,
The reactive latex chip block is a reactive latex chip block, characterized in that a latex-based reinforcing layer is attached to the layer made of the reactive latex chip composition of claim 1.
1st step of surface treatment of the surface of the construction surface;
A second step of applying an adhesive to the surface treated in the first step after the rust preventive treatment;
Step 3 of installing a reactive latex chip block after completing the second step;
A cross-sectional composite reinforcement method using a reactive latex chip composition comprising the step of coating with a surface reinforcing agent after completion of the third step.
5. The method of claim 4,
The reactive latex chip block is a cross-sectional composite reinforcement method using a reactive latex chip composition, characterized in that it comprises a layer made of the reactive latex chip composition of claim 1.
5. The method of claim 4,
The reactive latex chip block is a cross-sectional composite reinforcement method using a reactive latex chip composition, characterized in that a latex-based reinforcing layer is attached to the layer made of the reactive latex chip composition of claim 1.

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