KR102194852B1 - three-dimensional fiber Structure and Construction Method using that - Google Patents

Abstract

The present invention relates to a three-dimensional fiber structure and a soil surface reinforcing method using the same, wherein the three-dimensional fiber structure is constructed on a soil surface forming a slope on a road to absorb moisture from a surface of the soil surface and an atmosphere to be gradually hardened, thereby preventing a loss of soil and plant growth through integration with the surface of the soil surface. More specifically, the present invention relates to a three-dimensional fiber structure and a soil surface reinforcing method using the same, wherein the three-dimensional fiber structure is maintained in a gel type colloid state during a period in which a filler is hardened by absorbing external moisture by thickeners and bentonite contained in the filler, thereby forming high attachment strength and compression strength to a surface of an object to be reinforced.

Description

Three-dimensional fiber structure and construction method using that}

The present invention is a three-dimensional fiber structure that is constructed on a soil surface forming a road slope, absorbs moisture from the soil surface and the atmosphere and gradually hardens, thereby preventing the loss of soil and the growth of plants through integration with the soil surface, and using the same. It relates to the soil reinforcement method.

In general, in the case of constructing a road by cutting the land, the cut surface should be formed as an inclined slope and drainage facilities should be installed at the lower part of the slope to prevent the loss of soil from the cut surface by rainwater. do. At this time, in order to prevent the loss of soil, conventionally, as disclosed in Korean Patent Publication No. 10-2028734, the soil is reinforced by using a grass mat in which a non-woven fabric is knitted on the upper and lower surfaces of the cemented cement layer. The grass mat is formed to function only as a simple cover that prevents water absorption from the bottom surface by using a waterproof sheet. When water from the soil surface or water flows into the bottom of the waterproof sheet, it prevents scouring and loss of soil. In the case of the three-dimensional fiber impregnated with the cement composition disclosed in Korean Laid-Open Patent Publication No. 10-2011-7020005, it is not possible to overcome the problem of being fragile, by supplying high-pressure steam or water to cure the cement to rapidly cure it. There was a problem that a defect in which the sheet is lifted is caused because adhesion between the sheet and the sheet is not made.

Korean Registered Patent Publication No. 10-2028734 (announced on April 4, 2019) Korean Patent Publication No. 10-2011-7020005 (published on October 26, 2011)

The present invention was conceived to solve the above problems, and it is widely applied on the surface of a reinforcement object including a filler having a self-curing characteristic in three-dimensional fibers that do not have a waterproof layer on the upper and lower surfaces, and allow breathability and moisture to pass through. As a result, the three-dimensional fiber structure that absorbs moisture inside the soil and from the outside, gradually swells and self-hardens to improve the adhesion performance with the existing soil and prevents the growth of weeds and loss of the soil through integration. We want to provide a soil reinforcement method.

In addition, the present invention inserts an aluminum wire having a diameter of 1 to 3 mm in the three-dimensional fiber to integrate the three-dimensional fiber structure in response to the shape of the road surface, the curve of the soil and the uneven surface of the incision surface, By giving the same shape to the shape and manufacturing the ends in a ring shape for connection with the three-dimensional fibers, the connection between the fibers is made original, and the three-dimensional fiber impregnating material is attached to the road surface, soil and incision surface. It is intended to provide a three-dimensional fiber structure and a soil reinforcement method that can improve performance and prevent lifting.

In order to solve the above problems, the three-dimensional fiber structure of the present invention is mounted on the surface of a reinforced object and has a back layer formed in a lattice shape in which a plurality of pores are arranged, and a back layer provided on the back layer and in which a plurality of pores are arranged. A three-dimensional fiber consisting of a surface layer formed in a lattice shape, and an intermediate layer provided between the surface layer and the back layer and knitted to sequentially connect the pores of the surface layer and the back layer, and formed to achieve a height of a predetermined size; And a filler that is filled inside the three-dimensional fiber, absorbs moisture from the surface of the reinforced object and the atmosphere, is gradually cured, and adheres to the surface of the reinforced object.

In addition, the filler usually includes at least one of Portland cement, calcium sulfo aluminate, silica fume, and converter steel slag fine aggregate, and further includes a thickener and bentonite.

At this time, the filler is usually Portland cement 10 to 30% by weight, calcium sulfo aluminate 2 to 5% by weight, silica fume 3 to 7% by weight, thickener 5 to 20% by weight, bentonite 30 to 50% by weight, and converter steel slag fine aggregate It is characterized in that 10 to 30% by weight mixed.

In addition, the three-dimensional fiber structure of the present invention is applied to at least one or more of the surface layer or the back layer, preventing the scattering of the filler, but further comprising an organic-inorganic polymer coating material made to allow moisture absorption to the outside. To do.

At this time, the organic-inorganic polymer coating material is an inorganic binder composed of 60 to 70% by weight of calcium carbonate, 15 to 25% by weight of silica powder, 3 to 7% by weight of aluminum powder, and 8 to 13% by weight of talc and 20 to 40 of water-soluble acrylic resin. It is characterized in that it comprises an organic binder consisting of 10 to 30% by weight of water-soluble ethylene vinyl acetate resin and 40 to 60% by weight of water.

Here, the organic-inorganic polymer coating material is characterized in that it is composed of 40 to 55 parts by weight of the organic binder in 100 parts by weight of the inorganic binder.

In addition, the three-dimensional fiber structure of the present invention is inserted into the three-dimensional fiber, characterized in that it further comprises an aluminum wire for guiding the shape to correspond to the surface shape of the reinforced object.

In this case, the aluminum wire is formed to penetrate the side of the three-dimensional fiber, and at least one or more ends of both ends form a curved ring shape.

In addition, the pore size (d1) of the surface layer is made to be larger than the pore size (d2) of the back layer, the connecting fiber connecting the pores of one of the surface layer and the back layer, and the other surface layer adjacent to Alternatively, the spacing (t) between the connecting fibers connecting any one of the back layers is formed to be smaller than the pore size (d1) of the surface layer, and is formed to be larger than the pore size (d2) of the back layer.

In addition, the soil reinforcement method using the three-dimensional fiber structure of the present invention includes a back layer formed in a lattice shape in which a plurality of pores are arranged and seated on the surface of a reinforced object, and a back layer provided on the top of the back layer and a plurality of pores are arranged. A three-dimensional fiber manufacturing step of producing a three-dimensional fiber consisting of a surface layer formed in a grid shape and an intermediate layer provided between the surface layer and the back layer to sequentially connect the pores of the surface layer and the back layer; A three-dimensional fiber structure for producing a three-dimensional fiber structure by filling the prepared three-dimensional fiber with a filler comprising at least one of usually Portland cement, calcium sulfo aluminate, silica fume, and converter steelmaking slag fine aggregate, but further comprising a thickener and bentonite. Manufacturing step; A three-dimensional fiber structure attaching step of seating the prepared three-dimensional fiber structure on the surface of a reinforced object; And a self-curing step in which the filler filled in the seated three-dimensional fiber structure absorbs moisture from the surface of the reinforced object and the atmosphere, and is gradually cured and adhered to the surface of the reinforced object.

At this time, the filler to be filled in the three-dimensional fiber structure manufacturing step is usually Portland cement 10 to 30% by weight, calcium sulfo aluminate 2 to 5% by weight, silica fume 3 to 7% by weight, thickener 5 to 20% by weight, bentonite 30 to It is characterized in that 50% by weight and 10 to 30% by weight of the converter steel slag fine aggregate are mixed.

In addition, the step of manufacturing the three-dimensional fiber structure further includes a coating material application step of spraying an organic-inorganic polymer coating material on at least one or more of the surface layer or the back layer of the three-dimensional fiber, wherein the organic-inorganic polymer coating material is calcium carbonate 60-70 20 to 40% by weight of inorganic binder and water-soluble acrylic resin composed of 15 to 25% by weight of silica powder, 3 to 7% by weight of aluminum powder and 8 to 13% by weight of talc, and 10 to 30% by weight of water-soluble ethylene vinyl acetate resin And an organic binder composed of 40 to 60% by weight of water, and 40 to 55 parts by weight of the organic binder in 100 parts by weight of the inorganic binder.

In addition, the step of manufacturing the three-dimensional fiber structure further comprises a steel material insertion step of inserting an aluminum wire into the three-dimensional fiber structure so as to correspond to the shape of the surface of the reinforced object, wherein the aluminum wire penetrates the side of the three-dimensional fiber. It is made, characterized in that at least one or more ends of both ends form a curved ring shape.

The present invention according to the above-described configuration is by filling the interior of the three-dimensional fiber formed in a three-dimensional structure with a filler having a self-hardening characteristic through moisture absorption and installing it on the soil surface, thereby absorbing moisture from the soil surface surface over time. Therefore, it has the effect of preventing soil loss and plant growth through integration with the soil surface while gradually hardening.

More specifically, the filler of the present invention inhibits the evaporation of the absorbed moisture and reacts with moisture by a thickener that gives viscosity to the cement mortar and a swelling effect due to moisture absorption, thereby protecting colloidal action and stabilizing between solid particles. By including, there is an effect that the adhesion between the filler and the soil surface is increased by gradually curing by absorbing moisture from the soil surface and the atmosphere.

In addition, the present invention has the effect of supporting moisture absorption and preventing scattering of the filler powder by applying the organic-inorganic polymer coating material to the outside of the three-dimensional fiber.

In addition, the present invention uses an aluminum wire that is inserted into a three-dimensional fiber to aid the shape so as to correspond to the shape of the surface of the reinforced object forming the road surface, the soil surface and the incision, improving the adhesion performance with the filler and the surface of the soil surface. It has the effect of preventing lifting in the air and smoothing the connection between fibers.

1 is an exemplary view of constructing a three-dimensional fiber structure according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of a three-dimensional fiber structure according to an embodiment of the present invention.
3A to 3C are views showing three-dimensional fibers according to an embodiment of the present invention.
4 is a plan view showing a three-dimensional fiber structure in which an aluminum wire is inserted according to an embodiment of the present invention.
Figure 5 is a cross-sectional view showing the three-dimensional fiber structure according to Figure 4;
6 is a flow chart showing a soil reinforcement method using a three-dimensional fiber structure according to an embodiment of the present invention.

In the present invention, various modifications may be made and various embodiments may be provided, and specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to a specific embodiment, it is to be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being “connected” or “connected” to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

Hereinafter, the technical idea of the present invention will be described in more detail using the accompanying drawings.

The accompanying drawings are only an example shown to describe the technical idea of the present invention in more detail, so the technical idea of the present invention is not limited to the form of the accompanying drawings.

The three-dimensional fiber structure of the present invention is constructed on a road slope or a slope that is a slope that forms a cut slope, absorbs moisture from the surface of the soil and the atmosphere, and gradually hardens, so that the loss of soil and plants through integration with the soil surface It is to prevent it from growing.

1 is an exemplary view of constructing a three-dimensional fiber structure according to an embodiment of the present invention, Figure 2 is a cross-sectional view of a three-dimensional fiber structure according to an embodiment of the present invention, and Figure 3 is an embodiment of the present invention. 3A is a plan view showing the back layer of the three-dimensional fiber of the present invention, FIG. 3B is a side view showing an intermediate layer of the three-dimensional fiber of the present invention, and FIG. 3C is a diagram showing the three-dimensional fiber of the present invention. As a surface diagram showing a surface layer, referring to FIGS. 1 to 3, the three-dimensional fiber 100 of the present invention includes a back layer 110, a surface layer 120, an intermediate layer 130, a filler 200, an organic-inorganic polymer It may be configured to include a coating material 300 and an aluminum wire 160 (shown in FIGS. 4 and 5 ).

The back layer 110 is seated on the surface of the reinforced object and functions as an attachment surface for fusion with the surface, and is formed in a grid shape in which a plurality of pores 111 and 121 are arranged, and the surface layer 120 Silver performs the function of a finishing surface to protect the intermediate layer 130, which is self-curing by absorbing external moisture, from ultraviolet rays (UV), and is provided on the back layer 110, and has a plurality of pores 121 It is formed in an arranged lattice shape. In this case, the role of the back layer 110 and the surface layer 120 is not limited, and the surface layer 120 serves as a finishing surface, and the back layer 110 serves as an attachment surface. Can be configured.

However, in the present invention, one surface in the direction for filling the filler 200 into the intermediate layer 130 provided between the back layer 110 and the surface layer 120 is defined as the surface layer 120, The other surface to be seated on the surface 20 of the reinforced object will be defined as the back layer 110.

The intermediate layer 130 is provided between the surface layer 120 and the back layer 110 and is knitted to sequentially connect the pores of the surface layer 120 and the back layer 110, so that the filler 200 is It forms a space that can be provided on the surface, and functions as a spacer that provides rigidity so that the surface layer 120 and the back layer 110 can be spaced apart from each other by a predetermined height.

At this time, the intermediate layer 130 is made of any one of nylon, polyester, acrylic fiber, PVA fiber, polypropylene fiber, polyurethane fiber, carbon fiber, glass fiber, and aramid fiber with high strength to have high hygroscopicity. It is desirable.

That is, the three-dimensional fiber 100 is constructed in a three-dimensional shape including the back layer 110, the surface layer 120, and the intermediate layer 130, and is manufactured to have higher tensile strength and increased durability.

In addition, the back layer 110 and the surface layer 120 are preferably formed to form a grid spacing of a predetermined size through the pores 111 and 121 respectively formed, in order to prevent the inflow and discharge of the filler 200, and , Here, the grid spacing means the size (inner diameter) of any one of the plurality of pores 111 and 121 formed in the back layer 110 and the surface layer 120 woven in a grid shape.

That is, the size (d2) of the pores of the surface layer 120 is made to be larger than the size (d1) of the pores of the back layer 110, but the pores of any one of the surface layer 120 and the back layer 110 The spacing of the intermediate layer 130 formed by a fiber connecting one of the pores of the other surface layer 120 or the back layer 110 adjacent to and adjacent to any one connecting fiber 130 (t ) Is formed to be smaller than the pore size d1 of the surface layer 120, and is formed to be larger than the pore size d2 of the back layer 110, so that the filler filled in the intermediate layer 130 is omitted and It can prevent internal pupillarization.

More specifically, the pore size (d2, lattice spacing) of the surface layer 120 is preferably formed at intervals of 1 to 5 mm, and at this time, when the pore size (d2) of the surface layer 120 is less than 1 mm, filling Filling of the material may be difficult to cause cavities in the three-dimensional fiber 100, and when the pore size (d2) of the surface layer 120 is larger than 5 mm, the filler material is removed after filling and the organic-inorganic polymer coating material is applied. As the organic-inorganic polymer coating material flows into the interior, the bentonite and cellulose series contained in the filler 200 may reduce the self-absorption of the powder and the expansion function due to moisture absorption.

In addition, the pore size (d1) of the back layer 110 is preferably formed at intervals of 0.1 to 1 mm, and at this time, when the pore size (d1) of the back layer 110 is less than 0.1 mm, the non-hygroscopic fiber It is difficult to absorb moisture into the interior according to the properties of, thereby reducing the self-hardening performance of the filler 200. When the pore size d1 of the back layer 110 is larger than 1 mm, the filler 200 is Due to the occurrence of the phenomenon of being removed to the outside through the pores 111 of the back layer 110, the filling material 200 provided inside the intermediate layer 130 cannot be closed.

In addition, the interval (t) of the intermediate layer 130 is preferably formed of 1 to 3 mm, at this time, when the interval (t) of the intermediate layer 130 is less than 1 mm, the elastic recovery rate due to the dense fiber gap increases However, it may be difficult to fill the filler 200 due to the tightness of the internal fibers, so that the filler 200 may be partially filled, and the gap (t) of the intermediate layer 130 may be greater than 3 mm. In this case, due to the decrease in the elastic recovery rate of the three-dimensional fiber 100 and the side-off phenomenon of the filler, the dimensional stability of the designed three-dimensional fiber 100 may be defective. Durability problems such as tearing of the material may occur.

Accordingly, the applicant of the present invention said that the surface layer 120 of the three-dimensional fiber 100 can prevent the internal filling of the filler 200 and the inflow of the organic-inorganic polymer coating material 300, while maintaining ventilation and moisture absorption smoothly. The dimensions are designed to be able to be, and the back layer 110 is designed to prevent the filler 200 from falling out and to be closed, and the gap for filling the filler 200 into the intermediate layer 130 (t ) Is designed to increase the dimensional stability by securing stable tensile strength and preventing fiber tearing even during long-term installation, improving the durability of the three-dimensional fiber, smoothing the filling of the filler, and improving the elastic recovery rate at the same time.

The filler 200 is filled in the inner intermediate layer 130 of the three-dimensional fiber 100, absorbs moisture from the surface and atmosphere of the reinforced material, is gradually cured, and adheres to the surface of the reinforced material. It is a configuration for forming a stable compressive strength and adhesion strength after hardening while being integrally combined.The filler 200 usually contains Portland cement, calcium sulfo aluminate, silica fume, converter steel slag fine aggregate, thickener and bentonite. It consists of a mixture.

At this time, it is possible to maintain moisture for an increase in hygroscopicity and curing by the enhancer and bentonite contained in the filler 200 for a long time in the state that the filler 200 sufficiently contains, and accordingly, the filler 200 And by absorbing moisture from the surface of the reinforced object and gradually hardening, high adhesive strength with the surface of the reinforced object can be formed.

At this time, in the case of rapid hardening of the filler by supplying separate high-temperature steam or water for curing, the surfaces of the filler 200 and the reinforced material cannot be integrally combined, and different layers are formed on the surface of the reinforced material. A defect occurs in which the seated back layer 110 and the surface of the reinforced object are lifted.

More specifically, the filler 200 is usually Portland cement 10 to 30% by weight, calcium sulfo aluminate 2 to 5% by weight, silica fume 3 to 7% by weight, thickener 5 to 20% by weight, bentonite 30 to 50% by weight And 10 to 30% by weight of a converter steel slag fine aggregate.

At this time, the usual Portland cement is the most widely used cement, and a clay material containing silica (SiO ₂ ), aluminum (Al ₂ O ₃ ), iron oxide (Fe ₂ O ₃ ) and lime as the main components is used as a raw material in an appropriate ratio. It is made by adding 3 to 5% by weight of gypsum to the clinker obtained by sintering in a rotary kiln at about 1,450°C until a part of the mixture is melted and pulverizing the powder to about 3,200 to 3,400 ㎠/g, and the filler of the present invention ( 130), it is preferable to use a mixture of 10 to 30% by weight of the usual Portland cement.

When the amount of the normal Portland cement is less than 10% by weight, there is a problem of condensation and curing due to moisture absorption, and the formation of a solidified body is reduced.When it exceeds 30% by weight, the swelling performance through moisture absorption in the filler is exhibited by accelerating curing due to moisture absorption There may be a problem that interferes with the absorption of moisture from bentonite.

In addition, when the calcium sulfur aluminate is mixed with cement and water, it mainly generates ettringite or calcium hydroxide [Ca(OH) ₂ ] by a hydration reaction to expand and hydrate the cement mortar. To promote the initial strength.

In addition, by creating fine acicular crystals of ethrinzite, the micropores are filled and expanded to prevent shrinkage of the cement mortar, and furthermore, it is possible to prevent cracking of the cement mortar and improve the tensile properties. In the filler 200 of the above calcium sulfa aluminate It is preferable to use a mixture of 2 to 5% by weight.

At this time, if the amount of calcium sulfa aluminate is less than 2% by weight, there is a problem that solids formation of three-dimensional fibers is reduced due to initial coagulation and delayed curing, and when it exceeds 5% by weight, rapid setting due to rapid hydration and normal hydration There may be a problem of false setting in which only the surface hardens lightly without pouring.

In addition, the silica fume is a micro silica particle obtained by collecting and filtering silica (SiO ₂₎ contained in waste gas generated when manufacturing silicon (Si), ferrosilicon (FeSi), silicon alloy, etc. with a dust collector. It is applied in various fields such as replacement of concrete products, refractory materials, and other asbestos, and the silica fume is known as an essential material for the manufacture of modern underwater concrete or concrete that requires durability, especially high-strength concrete, and the admixture is cement particles. It is known to improve the strength of concrete through the fine filling effect of high density by filling the voids and discontinuous areas between the pores and the pozzolanic reaction with calcium hydroxide generated during cement hydration.It has the property of latent hydraulic property to fill the micropores of cement mortar. have.

Therefore, it is preferable to use a mixture of 3 to 7% by weight of silica fume in the filler 200 of the present invention. This is when the silica fume is less than 3% by weight, the inside of the gel pores in the cement curing and curing process Due to the inability to densify, the resistance to external chemicals and freeze-thaw is low, resulting in a decrease in durability, and if it exceeds 7% by weight, a pozzolanic reaction does not occur, and a problem such as formation of a solidified body may occur.

In addition, the thickener has a large amount of hydroxy in the polymer structure and binds with water to form a strong hydrogen bond, thereby inhibiting the evaporation of moisture, enabling condensation and hardening of the inorganic binder inside the filler, and is viscous to cement mortar. It increases the separation resistance of each material, and when excessive use, it is possible to reduce the initial strength expression due to the delay of setting of cement mortar and the hydration reaction of the three-dimensional fiber filler due to high viscosity.

At this time, the thickeners include celluloses such as methyl cellulose, ethyl cellulose, hydroxy ethyl cellulose, hydro propylene cellulose, hydro ethyl methylene cellulose, hydro propyl methyl cellulose, hydro bentonite methyl cellulose, and polyacrylamide, soda acrylic acid, polyethylene oxide, There are acrylic-based copolymers of polyacrylamide and soda acrylic acid, and any one of them may be used, or a cellulose-based and acrylic-based mixture may be used.

It is preferable to use a mixture of 5 to 20% by weight of such a thickener in the filler 200 of the present invention, which has a problem of reducing the effect on the separation resistance of each material when the thickener is less than 5% by weight. If it exceeds the weight %, the film is formed due to moisture absorption, and thus moisture absorption into the interior is hindered, and thus the self-curing effect of the filler may be hindered.

In addition, the bentonite powder has a high swelling effect due to moisture absorption, a protective colloidal action by reacting with moisture to form an agar-like gel, and is used to prevent bleeding and a protective colloid action, a solid stabilization action between solid particles, and the filler of the present invention. It is preferable to use a mixture of 30 to 50% by weight of such bentonite powder.

If the bentonite powder is less than 30% by weight, the swelling effect is reduced due to the decrease in the moisture absorption rate, there is no effect of stabilizing the solid between solid particles, and if it exceeds 50% by weight, it is combined with moisture and the filler is self-hardening due to excessive expansion. After deterioration and hardening, there may be a problem of lowering the compressive strength.

<Physical properties of bentonite> Test Items unit Test Methods standard Test result Remark Moisture % 105℃, 3h 15 or less 12 pH (pH Value) - pH meter 12 or less 11.2 Particle size % 100 mesh pass through over 90 93 Swelling Volume Ml/2g - Over 20 28 Viscosity (Marsh Viscosity) Sec. - Over 40 45 Filtration Quantity (Fluid Loss) Ml 45kg/㎥ 20 or less 11

In addition, converter steel slag fine aggregate occurs when steel is manufactured by refining pig iron and scrap iron in an electric furnace, and fine pores are formed in the slag generation process, so that the constricting action with the binder is strong, the specific gravity (d=3.16) is high, and the wear rate This is low so that when filling with three-dimensional fibers, it has excellent bonding properties with organic-inorganic binders, and loss of three-dimensional fibers due to high specific gravity can be prevented.

Therefore, it is preferable to use a mixture of 10 to 30% by weight of the fine converter steel slag aggregate in the filler 200 of the present invention, and at this time, when the fine converter steel slag aggregate is less than 10% by weight, the loss of three-dimensional fibers due to high specific gravity, etc. There is no effect of, and if it exceeds 30% by weight, problems such as decrease in workability due to an increase in the weight of the three-dimensional fiber may occur.

<Physical properties of converter steel slag fine aggregate and heavy metal dissolution test> Test Items unit Test Methods standard Test result Remark Particle size (10 mm) % KS F 2502 100 100 Particle size (5 mm) % KS F 2502 90~100 100 Particle size (2.5 mm) % KS F 2502 80-100 91 Particle size (1.2 mm) % KS F 2502 50~90 54 Particle size (0.6 mm) % KS F 2502 25~65 25 Particle size (0.3 mm) % KS F 2502 10-35 11 Particle size (0.15 mm) % KS F 2502 2~15 2 Assembly rate - KS F 2527 3.2±0.20 3.14 Surface dry saturation density g/cm3 KS F 2504 3.10 or higher 3.16 Absorption rate % KS F 2504 2.0 or less 0.4 Unit dimensional weight (compact rod test) kg/L KS F 2505 1.80 or higher 1.92 Elution
exam Oil component mg/L waste
Process test method - Not detected lead Within 1.0 Not detected cadmium Within 0.10 Not detected Copper Within 1.0 Not detected arsenic Within 0.50 Not detected Hexavalent chromium Within 0.10 Not detected Mercury Within 0.0030 Not detected Cyanide compounds Within 0.20 Not detected Trichloroethylene Within 250.0 Not detected Tetrachloroethylene Within 250.0 Not detected Organophosphorus compounds - Not detected

<Physical property test according to self-hardening of filler containing thickener and bentonite> Test Items unit Comparative Example 1 Example 1 Example 2 Test Methods Plain portland cement Thickener 10
+ Bentonite 40 Thickener 20
+ Bentonite 30 Compressive strength (28 days) N/㎟ 11.2 15.1 15.8 KS L ISO 679 Flexural strength (28 days) N/㎟ 2.51 3.58 3.67 KS L ISO 679 Adhesion strength (28 days) N/㎟ 0.12 0.63 0.76 KS F 4936 Length change rate (28 days) % -0.85 4.62 4.28 KS F 2424

In the following, the filler 200 of the present invention will be described in more detail based on each embodiment with reference to Table 3 above. However, the following examples are only one example for describing the present invention in more detail, and the present invention is not limited by the following examples.

<Example 1>

The filler according to the first embodiment is usually 20% by weight of Portland cement, 5% by weight of calcium sulfa aluminate, 5% by weight of silica fume, 10% by weight of a thickener, 40% by weight of bentonite, and 20% by weight of the fine aggregate of steelmaking slag in a converter. The filler was prepared by mixing, and the physical properties of the prepared filler were measured according to self-curing for 28 days in a thermo-hygrostat capable of maintaining a humidity of 20°C and 95% or more.

<Example 2>

The filler according to the second embodiment is usually Portland cement 20% by weight, calcium sulfa aluminate 5% by weight, silica fume 5% by weight, thickener 20% by weight, bentonite 30% by weight and converter steel slag fine aggregate 20% by weight The filler was prepared by mixing, and the physical properties of the prepared filler were measured according to self-curing for 28 days in a thermo-hygrostat capable of maintaining a humidity of 20°C and 95% or more.

<Comparative Example 1>

The filler according to the comparative example was usually prepared with 100% by weight of Portland cement alone, and the prepared filler was measured for 28 days in a thermo-hygrostat capable of maintaining a humidity of 20°C and 95% or more according to self-hardening.

That is, as can be seen in Table 3, the compressive strength, flexural strength, and adhesion strength of Example 1 in which 10% by weight of a thickener and 40% by weight of bentonite are applied, and in Example 2 in which 20% by weight of a thickener and 30% by weight of bentonite are applied, are It can be seen that it has a higher value than that of Comparative Example 1, which usually uses 100% by weight of Portland cement.

In more detail, in the results of Example 1 and Example 2, the compressive strength was 15.1N/mm2, 15.8N/mm2, and the whip strength was 3.58N/mm2, 3.67N/mm2. The higher the content of the thickener, the more moisturizing, Due to the effect of moisture absorption and viscosity, it induces the hydration stability of inorganic binders such as ordinary Portland cement and calcium sulfoaluminate in the filler, so that the compressive strength of 100% by weight of the ordinary Portland cement of Comparative Example 1 is about 5.25~ It can be seen that it can improve the self-hardening performance of about 1.4 to 1.5 times higher than 6.33 times and flexural strength of 2.51N/㎟.

In addition, in the results of Example 1 and Example 2, the adhesion strength was 0.63N/mm2 and 0.76N/mm2. The higher the content of the thickener, the higher the adhesion strength, and 100% by weight of the normal Portland cement of Comparative Example 1. It can be seen that the self-curing performance can be improved according to the moisturizing effect, which is about 5.25~6.33 times higher than 0.12N/㎟.

In addition, as in the results of Example 1 and Example 2, the results were 4.62% and 4.28% in the length change rate, and the swelling effect decreased as the content of bentonite decreased, and the normal Portland cement 100% by weight of Comparative Example 1- It can be seen that the effect of dimensional stability due to hydration can be improved than 0.85%.

In addition, in Comparative Example 1, when 100% by weight of Portland cement was used as the filler, the cause of reduction in dimensional stability effect due to increase in shrinkage due to false setting of inorganic binder, reduction in compressive strength, flexural strength and adhesion strength, etc. Accordingly, the filler 200 of the present invention used a thickener having excellent moisture absorption and moisturizing effect in order to induce adhesion and stable hydration of the inorganic binder in the filler, and induce dimensional stability of the three-dimensional fibers after curing. To do this, bentonite was used to have improved physical properties and dimensional stability effects.

As described above, the present invention has been described by specific matters and limited embodiments and drawings, but this is provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments, and the present invention is Those of ordinary skill in the relevant field can make various modifications and variations from this description.

Therefore, the spirit of the present invention is limited to the described embodiments and should not be defined, and all things that are equivalent or equivalent to the claims as well as the claims to be described later fall within the scope of the spirit of the present invention. .

In addition, the three-dimensional fiber structure (1) of the present invention is applied to at least one or more of the surface layer 120 or the back layer 110 of the three-dimensional fiber 100 to prevent scattering of the filler 200, but It may be configured to further include an organic-inorganic polymer coating material 300 made to enable moisture absorption into the furnace.

The organic-inorganic polymer coating material 300 is preferably spray-coated thinly on the surface layer 120 of the three-dimensional fiber 100 in order to prevent the problem that the filler 200 is scattered from the inside of the three-dimensional fiber 100.

At this time, the organic-inorganic polymer coating material 300 is an inorganic binder and water-soluble acrylic resin composed of 60 to 70% by weight of calcium carbonate, 15 to 25% by weight of silica powder, 3 to 7% by weight of aluminum powder, and 8 to 13% by weight of talc It is composed of an organic binder comprising 20 to 40% by weight, 10 to 30% by weight of water-soluble ethylene vinyl acetate resin and 40 to 60% by weight of water.

The organic-inorganic polymer coating material 300 is preferably mixed in a blending ratio of 40 to 55 parts by weight of the organic binder with respect to 100 parts by weight of the inorganic binder, and the three-dimensional fiber 130 filled with the filler 200 will absorb moisture. It is desirable to apply a thin spray on the surface to have the function that can be used.

Here, if less than 40 parts by weight of the organic binder is included with respect to 100 parts by weight of the inorganic binder, gastric condensation of the inorganic binder may occur due to moisture penetration into the three-dimensional fiber 100, and if more than 55 parts by weight, the three-dimensional Since the surface of the fiber 100 is coated, it is difficult to infiltrate moisture to the outside, and the adhesion performance to the road surface, soil and incision surface, etc. decreases, so that integration may be difficult.

<Physical properties of organic-inorganic polymer coating material> Test Items unit standard
(KS F 4042) Test result Test Methods Remark Compressive strength Age 3 days N/㎟ - 22.3 KS F 4042 7 days of age - 29.4 Age 28 Over 20 34.7 Flexural strength Age 3 days N/㎟ - 8.8 7 days of age - 10.8 Age 28 6.0 or higher 11.7 Adhesion strength After standard curing N/㎟ 1.0 or higher 3.4 KS F 4936 After accelerated weathering N/㎟ 1.0 or higher 3.2 After repeated hot and cold test N/㎟ 1.0 or higher 3.1 After alkali resistance test N/㎟ 1.0 or higher 3.2 After salt water resistance test N/㎟ 1.0 or higher 3.4 Freeze and thaw
Resistance Relative dynamic modulus % 80 or more 82.2 KS F 2456 Neutralization depth mm 2.0 or less 0.8 KS F 4042 Water permeability g 20.0 or less 0.3 KS F 4916 Water absorption coefficient kg/㎡·h ^0.5 0.5 or less 0.04 KS F 2609 Moisture permeation resistance (S _d ) m 2 or less 1.1 KS F 4716 Chloride ion penetration resistance Coulombs 1 000 or less 801 KS F 2711
ASTM C 1202 Length change rate % Within ±0.15 -0.020 KS F 2424 Reference
(SGS report number
: CMT2019-1556) ※ Mixing ratio (mass ratio) [Powder: liquid (SC=50%) = 100: 45]
※ Estimation of durability according to neutralization resistance
-Kishitani K. formula applied
. Standard: W/B 40% or less, cover thickness 40mm, no damage when carbonation depth is 10mm or less.
. Test: W/B=28%, Specimen size: 100×100×100mm Carbonation depth is 0.8 mm, so no damage according to the above criteria .
※ Estimation of durability according to chloride ion penetration resistance
. Criteria: The amount of charge passed through the diffusion cell (Coulombs) (ASTM C 1202)
〈100 Negligible, 100~1,000 Very low, 1,000~2,000 Low 〉4,000 High
. Test: The higher the passing charge, the less chloride penetration resistance, so our product shows the result of 801 Coulmobs, so the chloride ion penetration is very low.

4 is a plan view showing a three-dimensional fiber structure 1 in which an aluminum wire 160 is inserted according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view showing the three-dimensional fiber structure 1 according to FIG. 4, 4 and 5, the three-dimensional fiber structure 1 of the present invention further includes an aluminum wire 160 inserted into the three-dimensional fiber 100 to guide the shape to correspond to the surface shape of the reinforced object. It can be configured to include.

At this time, the aluminum wire 160 is the three-dimensional fiber structure on the surface of the reinforced object 20 shown in FIG. 1 on the shape of the road surface, the bend of the soil surface, and the uneven surface of the cut surface, such as the cutting point 21 (1) In order to integrate the three-dimensional fiber 100, an aluminum wire 160 having a diameter of 1 to 3 mm is inserted to give the same shape to the surface shape of the reinforced object during construction, and the three-dimensional fiber 100 The three-dimensional fiber 100 is made to pass through the side surface of the three-dimensional fiber 100 for connection with, but at least one or more ends of both ends are made to form a curved ring shape, thereby smoothly connecting the fibers to each other, as shown in FIG. By fixing the bent end 161 to the surface 20 of the reinforced object, it is possible to improve the adhesion performance with the road surface, the soil surface, and the cut surface, thereby preventing the three-dimensional fiber structure 1 from being lifted.

Figure 6 is a flow chart showing a soil reinforcement method using a three-dimensional fiber structure (1) according to an embodiment of the present invention, referring to Figure 6, the soil surface reinforcement method using the three-dimensional fiber structure (1) of the present invention Silver, three-dimensional fiber manufacturing step (S100), three-dimensional fiber structure manufacturing step (S200), three-dimensional fiber structure attachment step (S300) and self-curing step (S400) may be configured.

The three-dimensional fiber manufacturing step (S100) is a step of manufacturing a three-dimensional fiber 100 having a three-dimensional shape composed of a back layer 110, a surface layer 120, and an intermediate layer 130.

The three-dimensional fiber 100 is seated on the surface of the reinforced object and formed in a lattice shape in which a plurality of pores are arranged, and a lattice shape in which a plurality of pores are arranged on an upper portion of the back layer 110 An intermediate layer formed between the surface layer 120, the surface layer 120, and the back layer 110, and is knitted to sequentially connect the pores of the surface layer 120 and the back layer 110, but formed to achieve a height of a predetermined size. It includes (130).

In the three-dimensional fiber structure manufacturing step (S200), the three-dimensional fiber (1) manufactured in the three-dimensional fiber manufacturing step (S100) is filled with a filler 200, and the organic-inorganic polymer filler 300 is applied and the aluminum wire 160 is applied. As a step of inserting, since the construction of the surface of the reinforced object and the three-dimensional fiber structure (1) are independently performed, there is an advantage of shortening the construction time.

At this time, the three-dimensional fiber structure setting step (S200) may include a filler filling step (S210), a coating material applying step (S220) and a steel material insertion step (S230), and the filler filling step (S111) is a three-dimensional fiber The three-dimensional fiber (1) prepared in the manufacturing step (S100) usually includes at least one or more of Portland cement, calcium sulfo aluminate, silica fume, and converter steel slag fine aggregate, but further includes a thickener and bentonite, and a mixed filler 130 ) Is impregnated to flow into the interior of the three-dimensional fiber 130 through the pores 121 of the surface layer 120, and the three-dimensional fiber before the filler 200 and the material of the filler 200 are filled ( 100) is transported separately to the site, so that the filling material 200 can be mixed and filled at the site, so that the material can be easily transported.

In addition, the coating material application step (S120) prevents scattering of the filler material on at least one or more of the surface layer 120 or the back layer 110 of the three-dimensional fiber 100 filled with the filler material 130, As an operation of applying the organic-inorganic polymer coating material 300 made to absorb moisture, it is preferable to spray spray so that the organic-inorganic polymer 300 can be applied thinly.

At this time, the surface layer 120 of the three-dimensional fiber 100 is coated with the organic-inorganic polymer 300 to block UV rays and prevent scattering, and the back layer 110 to improve water absorption performance from the surface, By including only the water-soluble polymer, it can be modified to achieve the purpose of the three-dimensional fiber structure (1) of the present invention.

At this time, the configuration of the three-dimensional fiber structure (1) according to the application of the organic-inorganic polymer 300 is not limited to the above-described embodiment without departing from the gist of the present invention, and the scope of application is of course various Implementation will be possible.

In addition, in the steel material insertion step (S130), an aluminum wire 160 is inserted into the three-dimensional fiber 100 so as to correspond to the shape of the surface of the reinforced object, thereby assisting the shape corresponding to the surface shape of the reinforced object. As a configuration for, as shown in FIG. 1, a point where the surface 20 is bent so that the surface 20 forms a slope and a flat surface occurs, and the three-dimensional fiber 100 of the present invention corresponds to the shape of the surface. , By inserting the aluminum wire 160 in the portion corresponding to the bending point 21, by supporting the shape of the three-dimensional fiber 100 filled with the filler 200, increasing the contact with the surface, and the bending There is an advantage of preventing the phenomenon that the three-dimensional fiber structure 1 is lifted at the point 21.

The three-dimensional fiber structure attaching step (S200) is a configuration in which the prepared three-dimensional fiber structure (1) is seated on the surface of the reinforced object, and the seated three-dimensional fiber structure (1) is then subjected to the self-curing step (S300). , The filler 200 filled in the three-dimensional fiber 100 is gradually cured while absorbing moisture from the surface and the atmosphere of the reinforced material, and bonded to the surface of the reinforced material to form an integral body.

In more detail, the filler 200 absorbs external moisture by the thickener and bentonite contained in the filler 200 and maintains a gel-like colloidal phase during the curing period, thereby maintaining the surface of the reinforced material and It has the advantage of being able to form high bonding strength and compressive strength.

The present invention is not limited to the above-described embodiments, and of course, various modifications can be made without departing from the gist of the present invention as claimed in the claims.

1: three-dimensional fiber structure 20: soil
21: bending point 100: three-dimensional fiber
111: back layer 120: surface layer
130: intermediate layer 160: aluminum wire
200: filler 300: organic-inorganic polymer coating material
111, 121: pore 160: aluminum wire

Claims (16)

A back layer that is seated on the surface of the reinforced object and formed in a lattice shape in which a plurality of pores are arranged,
A surface layer provided on the back layer and formed in a lattice shape in which a plurality of pores are arranged,
A three-dimensional fiber comprising an intermediate layer provided between the surface layer and the back layer and knitted to sequentially connect the pores of the surface layer and the back layer, and formed to achieve a height of a predetermined size;
A filler that is filled inside the three-dimensional fiber, absorbs moisture from the surface of the reinforced object and the atmosphere, is gradually cured, and adheres to the surface of the reinforced object; And
Including; an organic-inorganic polymer coating material that is applied to at least one or more of the surface layer or the back layer to prevent scattering of the filler material and to allow moisture absorption to the outside,
The organic-inorganic polymer coating material,
Inorganic binder consisting of 60 to 70% by weight of calcium carbonate, 15 to 25% by weight of silica powder, 3 to 7% by weight of aluminum powder, and 8 to 13% by weight of talc, and
A three-dimensional fiber structure comprising an organic binder consisting of 20 to 40% by weight of a water-soluble acrylic resin, 10 to 30% by weight of a water-soluble ethylene vinyl acetate resin, and 40 to 60% by weight of water.
The method of claim 1,
The filler,
Usually includes at least one or more of Portland cement, calcium sulfo aluminate, silica fume, and converter steel slag fine aggregate,
A three-dimensional fiber structure, characterized in that it further comprises a thickener and bentonite.
The method of claim 2,
The filler,
Usually Portland cement 10-30 wt%, calcium sulfo aluminate 2-5 wt%, silica fume 3-7 wt%, thickener 5-20 wt%, bentonite 30-50 wt%, and converter steel slag fine aggregate 10-30 wt% Three-dimensional fiber structure, characterized in that mixed.
delete delete The method of claim 1,
The organic-inorganic polymer coating material,
Three-dimensional fiber structure, characterized in that consisting of 40 to 55 parts by weight of the organic binder in 100 parts by weight of the inorganic binder.
The method of claim 2,
The three-dimensional fiber structure further comprising an aluminum wire inserted into the three-dimensional fiber to guide the shape to correspond to the surface shape of the reinforced object.
The method of claim 7,
The aluminum wire,
The three-dimensional fiber structure, characterized in that it is made to penetrate the side of the three-dimensional fiber, at least one or more ends of both ends to form a curved ring shape.
The method of claim 2,
The pore size (d1) of the surface layer is made to be larger than the pore size (d2) of the back layer,
The spacing (t) between the connecting fibers connecting the pores of any one of the surface layers and the back layer and the connecting fibers adjacent to one of the pores of the other surface layer or the rear layer is the pore size of the surface layer (d1 ) And is formed to be larger than the pore size (d2) of the back layer.
A rear layer seated on the surface of the reinforced object and formed in a lattice shape in which a plurality of pores are arranged, a surface layer formed in a lattice shape in which a plurality of pores are arranged on an upper portion of the back layer, and between the surface layer and the rear layer A three-dimensional fiber manufacturing step of producing a three-dimensional fiber consisting of an intermediate layer which is knitted to sequentially connect the pores of the surface layer and the back layer, and has a height of a predetermined size;
The three-dimensional fiber structure is formed through a filler filling step of filling the prepared three-dimensional fiber with a filler composed of at least one of portland cement, calcium sulfo aluminate, silica fume, and converter steelmaking slag fine aggregate, but further comprising a thickener and bentonite. 3D fiber structure manufacturing step to be prepared;
A three-dimensional fiber structure attaching step of seating the prepared three-dimensional fiber structure on the surface of a reinforced object; And
A self-curing step in which a filler filled in the seated three-dimensional fiber structure absorbs moisture from the surface and atmosphere of the reinforced material, is gradually cured, and adheres to the surface of the reinforcement; Including,
The three-dimensional fiber structure manufacturing step further comprises a coating material application step of spray-coating an organic-inorganic polymer coating material on at least one or more of the surface layer or the back layer of the three-dimensional fiber,
The organic-inorganic polymer coating material,
An inorganic binder composed of 60 to 70% by weight of calcium carbonate, 15 to 25% by weight of silica powder, 3 to 7% by weight of aluminum powder, and 8 to 13% by weight of talc, and
Soil reinforcement method using a three-dimensional fiber structure, characterized in that it comprises an organic binder consisting of 20 to 40% by weight of water-soluble acrylic resin, 10 to 30% by weight of water-soluble ethylene vinyl acetate resin and 40 to 60% by weight of water.
The method of claim 10,
The filler to be filled in the three-dimensional fiber structure manufacturing step,
Usually Portland cement 10-30 wt%, calcium sulfo aluminate 2-5 wt%, silica fume 3-7 wt%, thickener 5-20 wt%, bentonite 30-50 wt%, and converter steel slag fine aggregate 10-30 wt% Soil reinforcement method using a three-dimensional fiber structure, characterized in that by mixing.
delete delete The method of claim 10,
The organic-inorganic polymer coating material,
Soil reinforcement method using a three-dimensional fiber structure, characterized in that consisting of 40 to 55 parts by weight of the organic binder in 100 parts by weight of the inorganic binder.
The method of claim 10,
The three-dimensional fiber structure manufacturing step,
A soil reinforcement method using a three-dimensional fiber structure, characterized in that it further comprises a steel material inserting step of inserting an aluminum wire into the three-dimensional fiber structure so as to correspond to the shape of the surface of the reinforced object.
The method of claim 15,
The aluminum wire,
A soil reinforcement method using a three-dimensional fiber structure, characterized in that the three-dimensional fiber penetrates through a side surface, and at least one or more ends of both ends form a curved ring shape.

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