KR102271040B1 - Reinforcement mat of on-site hydration type using tufting connection thread, manufacturing method for the same, and method for reinforcing concrete structure - Google Patents

Abstract

As an on-site hydration reinforcing mat for maintenance or reinforcement of concrete structures, it uses a tufting connector according to the tufting process of a loom with the lower surface, premix binder and upper surface formed. By doing this, the lower outer shell, premix binder and upper surface can be tied and fixed in the vertical direction. Also, by using a loom equipped with a conveyor system, the on-site hydration type reinforcing mat can be automated by a collective tufting process using a tufting connecting yarn. Production is possible, and accordingly, the manufacturing cost of on-site hydration type reinforcing mat can be reduced, and also, by filling the space within the field hydration type reinforcing mat with a non-directional short-fiber mixed binder to increase the tensile strength, it can be applied to the load action. Provided are a field hydration type reinforcing mat using a tufting connecting yarn, a method of manufacturing the same, and a method of reinforcing a concrete structure using the same, which can suppress the occurrence of cracks.

Description

Field hydration reinforcing mat using tufting connecting yarn and method for manufacturing the same, and method for reinforcing concrete structure using the same

The present invention relates to an on-site hydration type reinforcement mat using a tufting connecting yarn, and more specifically, an on-site hydration type reinforcement mat for maintenance or reinforcement of a concrete structure. To a field hydration type reinforcing mat using a tufting connecting yarn according to a tufting process, a method for manufacturing the same, and a method for reinforcing a concrete structure using the same.

In general, in the case of large-scale land development, road construction, landfill adjustment work, etc., cut slopes are inevitably formed, and securing stability in the design and construction of such cut slopes is a basic requirement for smooth use of structures. In addition, most of the slope of the incision site is exposed to bedrock, and this exposure of bedrock has a problem of providing a bad view to drivers and nearby residents. Furthermore, the sloping slope formed by road construction and railroad construction includes the risk of collapse when there is severe natural conditions such as torrential rain or typhoon.

The shotcrete method is commonly used as a type of method for reinforcing such an unstable slope. This shotcrete method is a method of inducing the stabilization of the surface layer by covering the surface of the slope with the unstable surface layer with concrete. It is often used because of its advantages.

However, since this shotcrete method is an operation by spraying liquid on the excavation surface, the facility is excessively used, a lot of time is required for preliminary preparation, and also, noise may occur during operation because it is poured using a pump, Since the operator holds the tip of the nozzle and performs the operation, there is a problem in that the operator inhales particles when spraying shotcrete.

On the other hand, when the storage tank, waterway, and slope are finished, concrete is poured. At this time, a formwork is used to cure the concrete while preventing leakage, but there is a problem that concrete cannot be poured without installing such a formwork, , there are problems such as the time-consuming and excessive labor required for pre-preparation work and pouring work for concrete pouring.

On the other hand, as a prior art for solving the above-mentioned problems, the Republic of Korea Patent Registration No. 10-1812476 discloses an invention named "impregnated cloth", which will be described with reference to FIGS. 1A to 1C.

1A to 1C are views for explaining an on-site hydration type reinforcing mat using an impregnated cloth according to the prior art, and FIG. 2 is a field hydration type reinforcing mat using the impregnated cloth according to the prior art shown in FIG. 1. It is a figure for demonstrating crack generation.

1A to 1C, the in-situ hydration type reinforcing mat 10 using an impregnated cloth according to the prior art, a densely knitted bottom layer 11, a more loosely knitted upper layer 12, the lower Connecting fibers (13) extending across the space (14) between the bottom layer (11) and the upper upper layer (12) and filling the space (14) between the bottom layer (11) and the upper layer (12) and a filling material 15 that becomes

As shown in FIG. 1C , a filler material 15 , for example a cement composite, is supported in the space 14 between the upper and lower faces, and can be hardened by the addition of a liquid, for example water. have. Until this filler material 15 is cured, the impregnated fabric is flexible and can be shaped after the filler material 15 in the space 14 between the bottom layer 11 and the top layer 12 has cured. Accordingly, the field hydration type reinforcing mat 10 using the impregnated cloth according to the prior art can be used as a strong structural element in a wide range of situations.

In the case of the field hydration reinforcing mat 10 using the impregnated cloth according to the prior art, after being installed in the field as a flexible flexible reinforcing mat 10, when water is sprayed on the reinforcing mat 10, water and cement composite The filling material 15, which is a material, reacts, and the filling material 15 is hardened to form concrete. Accordingly, the field hydration type reinforcement mat 10 using the impregnated cloth according to the prior art is the shotcrete of the existing tunnel. It can be used as a work substitute, as a finishing material for storage tanks, waterways, slopes, etc., and as a drain liner.

However, when curing the filler material 15, which is a cement composite material, since the bottom layer 11 and the upper layer 12 are not fixed to each other, there may be a problem that the filling material 15 is concentrated to one side and is concentrated, In addition, since the connecting fibers 13 are installed in the vertical direction, there is a disadvantage that the tensile force in the longitudinal direction is weak, and there is a disadvantage that the breaking strength is weak.

In addition, since the bottom layer 11 of the lower part and the upper layer 12 of the upper part are formed of a knitted fabric, the filling material 15 filled in the form of particles is lost during movement and field installation, resulting in partial strength. There is a problem of degradation. In addition, when water reacting with the filling material 15 is added, water permeates only the surface portion and does not harden the inside, and also the bottom layer 11 and the upper layer on the top using the connecting fiber 13 . There is a disadvantage in that it is difficult to control the curing thickness by the amount of the filler material 15 because the space (12) is formed, that is, the space (14).

In other words, as shown in FIG. 1C, the lower layer 11 and the upper layer 12 are connected with a connecting fiber 13, and the space 14 between the lower layer 11 and the upper layer 12 is After filling the filling material 15, by solidifying the filling material 15 in the field by hydration reaction, the concrete structure on site can be reinforced, and at this time, the connecting fiber woven in the direction perpendicular to the impregnated fabric after being solidified. (13) acts as a reinforcement.

However, in the case of the field hydration reinforcing mat 10 using the impregnated cloth according to the prior art, first, the three-dimensional woven reinforcing material must be pre-fabricated and then filled with the filling material 15, at this time, the three-dimensional There is a problem in that it takes a lot of time and money to weave the connecting fiber 13 and fill the filling material 15 .

Second, it is difficult to maintain the humidity at a certain level or more after the moisture required for the hydration reaction is supplied in the filling material 15 during the construction of the field hydration reinforcing mat 10 using the impregnated cloth according to the prior art, and also , when the hydration reaction is started, as shown in FIG. 2 , there is a risk of drying shrinkage cracking due to consumption of the supplied moisture.

Third, in the case of the field hydration type reinforcing mat 10 using the impregnated cloth according to the prior art, since the thickness is thin compared to other specifications, the structure constructed with this field hydration type reinforcing mat 10 is similar to a thin plate. will move Thereafter, when a load is applied on the field hydration type reinforcing mat 10, the stress in the vertical direction is negligible, whereas when the tensile force is directly applied in the horizontal direction, a large tensile stress in the plane direction may occur. In addition, when subjected to a bending moment, a large stress may be generated in the plane direction of the upper surface or the lower surface of the concrete structure with respect to the neutral axis due to the bending stress. At this time, if the stress generated exceeds the tensile strength of the binder, there is a problem that cracks may occur in the concrete structure.

On the other hand, as another prior art, Korean Patent Registration No. 10-1884967 discloses an invention entitled "Non-woven cement composite for on-site hydration", which will be described with reference to FIGS. 3 and 4A to 4C.

3 is a view illustrating the installation of a cement composite material for on-site hydration according to the prior art to a waterway lining construction, and FIG. 4a is an exploded perspective view of a flexible non-woven cement composite as a cement composite for on-site hydration according to the prior art. , FIG. 4B is a perspective view of the rolled nonwoven cement composite, and FIG. 4C is a cross-sectional view of the nonwoven cement composite.

As shown in FIG. 3 , the cement composite material 40 for on-site hydration according to the prior art is a flexible composite material in a pre-packaged form (eg, sheet, roll, etc.) is hydrated This cement composite material for on-site hydration 40, as shown in FIG. 3, can be used when the concrete structure 30 is a waterway lining. Specifically, after installing the flexible cement composite material 40 for on-site hydration on the site, and then spraying water using the watering device 50, the water and the cement composite material 40 for on-site hydration react to the cement composite. The material is hardened to become concrete, and accordingly, the concrete structure 30 in the field can be reinforced.

4A to 4C, in the conventional cement composite material 40 for on-site hydration according to the prior art, a transmission layer 41 configured in a mesh form on one side is bonded to the structural layer 43, and the structural layer A sheet-shaped impermeable layer 44 is bonded to 43 , and cement particles 42a are filled in the pores 43b of the structural layer 43 to form the cement layer 42 . At this time, the structural layer 43 includes a plurality of discontinuous fibers shown as strands 43a, and as shown in FIG. 4C , the strands 43a are arranged in a nonwoven form. At this time, the cement composite material 40 for on-site hydration according to the prior art is composed of a flexible sheet and can be wound in the form of a roll, as shown in FIG. 4b, and the transmission layer 41, the structural layer ( 43) and the non-transmissive layer 44 are disposed adjacent to each other as a flexible material, respectively.

In the case of the cement composite material 40 for on-site hydration according to the prior art, water is easily introduced by the permeable layer 41 configured in the form of a mesh on one side, but the cement particles, which are filling materials, are easily lost, in particular, Since the cement particles are biased to one side, there is a problem that the thickness is not uniform, and there is also the inconvenience that the impermeable layer 44 must be installed to face the floor, and the permeable layer 41 , the structural layer 43 and the impermeable layer Since the bonding strength of (44) is weak, there is a problem that the quality of the product is deteriorated. In particular, there is a problem that the overall strength of the product is reduced by the structural layer 43, there is a limit that is not strong in tensile external force. In addition, excessive vertical connecting fibers have a disadvantage of causing vertical cracks.

In particular, according to the prior art, after weaving a three-dimensional reinforcing material on the upper surface of the water impermeable layer, the filling material is filled in the empty space by vibration, and then the nonwoven fabric is assembled on the upper surface to complete the reinforcement mat. There is a problem in that it is difficult to charge.

Republic of Korea Patent No. 10-1812476 (Registration Date: December 20, 2017), Title of Invention: "Impregnated Cloth" Republic of Korea Patent No. 10-1986980 (Registration Date: June 1, 2019), Title of Invention: "Non-woven cement composite for on-site hydration" Republic of Korea Patent No. 10-1884967 (Registration Date: July 27, 2018), Title of Invention: "Non-woven cement composite for on-site hydration" Republic of Korea Patent No. 10-2003415 (Registration Date: July 18, 2019), Title of Invention: "Aggregation for on-site hydration concrete and concrete mat using the aggregate" Republic of Korea Patent No. 10-1879389 (Registration Date: July 11, 2018), Title of Invention: "Site Hydrated Concrete Mat" Republic of Korea Patent No. 10-1851183 (Registration Date: April 17, 2018), Title of Invention: "Site Hydrated Concrete Mat with Reinforced Tensile Force in the Oblique Direction"

The technical problem to be achieved by the present invention for solving the above problems is an on-site hydration reinforcing mat for maintenance or reinforcement of a concrete structure, in a state in which the lower surface, the premix binder and the upper surface are formed. Field hydration type reinforcing mat using tufting connecting yarn and its manufacturing method, which can bind and fix the lower outer shell, premix binder, and upper outer shell in the vertical direction using tufting connecting yarn according to the tufting process of the loom , and to provide a method for reinforcing a concrete structure using the same.

Another technical problem to be achieved by the present invention is that, by using a loom equipped with a conveyor system, automated production of on-site hydration-type reinforcing mats is possible by a collective tufting process to which tufting connecting yarns are applied. Field using tufting connecting yarns An object of the present invention is to provide a hydration-type reinforcing mat, a method for manufacturing the same, and a method for reinforcing a concrete structure using the same.

Another technical problem to be achieved by the present invention is to increase the tensile strength by filling the space in the field hydration type reinforcement mat with a non-directional short fiber mixed binder, which can suppress the occurrence of cracks due to load action, tufting connection An object of the present invention is to provide a field hydration type reinforcing mat using a yarn, a method for manufacturing the same, and a method for reinforcing a concrete structure using the same.

As a means for achieving the above-mentioned technical problem, the field hydration type reinforcement mat using the tufting connecting yarn according to the present invention is a field hydration type reinforcement mat used by consolidating the premix binder by supplying moisture in the field, a lower surface shell formed of a water permeable or impermeable nonwoven fabric; an upper shell formed of a water-permeable nonwoven fabric; A cement-based paste or cement-based mortar in a dry powder state prepared to inhibit hydration reaction, comprising: a premix binder installed to be supported between the lower surface and the upper surface; And as a spacer and connecting fiber, a tufting connecting yarn that is woven to penetrate through the upper surface, premix binder, and lower surface according to the tufting process of the loom to fix the upper surface, premix binder, and lower surface in one batch. Concrete It is characterized in that the hydration reaction of the premix binder occurs by the moisture supplied to the premix binder at the structure reinforcement site, and is integrated with the concrete structure in contact with the lower surface shell.

Here, it is preferable that the tufting connecting yarn uses a polypropylene (PP) fiber or polyethylene (PE) fiber having high strength, and the lengthwise and widthwise intervals of the tufting connecting yarn are each 1-3 cm apart.

Here, the tufting connecting yarn is densely tufted at both ends of the upper surface along the longitudinal direction of the field hydration type reinforcing mat to prevent side leakage of the premix binder, and predetermined along the width direction of the field hydration type reinforcement mat It can be densely tufted at intervals.

Here, when the field hydration type reinforcing mat is cut and used in the field, to prevent leakage of the premix binder, the cut between the tufting connectors densely tufted at predetermined intervals along the width direction of the field hydration type reinforcing mat It can be cut along a line.

Here, when the thickness of the in-situ hydration-type reinforcing mat is less than 10 mm, a cement-based paste is applied as the premix binder, and when the thickness of the in-situ hydration type reinforcing mat is 10 mm or more, a cement-based mortar can be applied as the premix binder.

Here, when the premix binder is a cement-based paste, 100 parts by weight of cement, 0.5 to 2 parts by weight of a shrinkage reducing agent, 0.5 to 2 parts by weight of an expanding agent, 0.6 to 1.0 parts by weight of superabsorbent polymer (SAP), and 3 to 5 parts by weight of a step Including fibers, the short fibers are characterized in that 1-2% of the total volume of the premix binder is mixed.

Here, when the premix binder is a cement-based mortar, 100 parts by weight of cement, 0.5 to 2 parts by weight of a shrinkage reducing agent, 0.5 to 2 parts by weight of an expanding agent, 0.6 to 1.0 parts by weight of superabsorbent polymer (SAP), and 3 to 5 parts by weight of a step It contains fibers and 60 to 80 parts by weight of fine aggregate, wherein the short fibers are characterized in that 1-2% of the total volume of the premix binder is mixed.

Here, the short fibers may be polyvinyl alcohol (PVA) fibers, polypropylene (PP) fibers, polyethylene (PE) fibers, or aramid fibers of 5 to 10 cm.

Here, when the mixing amount of the single fibers mixed in the premix binder is large, the interval between the tufting connecting yarns is large, and when the mixing amount of the single fibers is small, the interval of the tufting connecting yarns can be formed narrowly.

Here, it is possible to reduce the shrinkage of the premix binder by maintaining the internal humidity of the premix binder at 80% or more for a certain period of time.

Here, in the supply water supplied to the premix binder, some of the surplus water is maintained in a state in which the superabsorbent polymer (SAP) and short fibers are absorbed, and when the premix binder is dried due to hydration reaction, moisture is consumed, The water present in the superabsorbent polymer (SAP) and the short fibers are released to maintain proper humidity until the hydration reaction is completed.

On the other hand, as another means for achieving the above-mentioned technical problem, the field hydration type reinforcing mat using the tufting connecting yarn according to the present invention and its manufacturing method are on-site using a loom type reinforcing mat manufacturing apparatus equipped with a conveyor system. A method of manufacturing a hydration-type reinforcing mat, comprising the steps of: a) supplying a lower surface skin wound on a lower surface skin roll on a conveyor belt; b) laying the premix binder stored in the premix binder supply hopper on the lower outer shell; c) compressing the premix binder laid on the lower surface using a compression roller; d) supplying the upper skin wound on the upper skin roll onto the pressed premix binder; e) performing a tufting process on the outer surface of the upper surface, the premix binder and the lower surface using the tufting connecting yarn wound on the connecting yarn roll; and f) winding the in-situ hydration-type reinforcing mat completed by the tufting process on a reinforcing mat winder, wherein the on-site hydration-type reinforcing mat includes: a lower surface formed of a partially water-permeable or impermeable nonwoven fabric; Outside the upper surface formed of a water-permeable nonwoven fabric; A cement-based paste or cement-based mortar in a dry powder state prepared to inhibit hydration reaction, comprising: a premix binder installed to be supported between the lower surface and the upper surface; and a tufting connecting yarn as a spacer and connecting fiber, which is woven to penetrate through the upper outer sheath, the premix binder, and the lower outer sheath according to the tufting process of the loom to secure the upper outer sheath, the premix binder, and the lower outer sheath; And the tufting process of step e) is characterized in that the upper surface, the premix binder, and the lower surface are collectively fixed with a plurality of tufting connecting threads.

Here, the tufting connecting yarn serves to maintain the premix binder in the space between the lower and upper outer shells during the production, movement, mounting, and hydration reaction of the on-site hydration-type reinforcing mat, and the premix binder is solidified in the field. Then, the tufting connecting yarn serves to resist the vertical stress and the in-plane shear stress acting on the field hydration type reinforcing mat.

Here, in order to suppress a hydration reaction from moisture in the process of storage after the production of the in-situ hydration-type reinforcing mat, it is preferable to store the outer surface of the in-situ hydration-type reinforcing mat in a plastic wrap.

On the other hand, as another means for achieving the above-mentioned technical problem, the method for reinforcing a concrete structure using an in-situ hydration type reinforcing mat using a tufting connecting yarn according to the present invention is a method of reinforcing a concrete structure using an in-situ hydration type reinforcing mat , a) removing the deteriorated section of the concrete structure in need of repair or reinforcement; b) manufacturing and preparing an on-site hydration-type reinforcing mat using a tufting connector; c) applying a primer to the part on which the in-situ hydration type reinforcing mat is to be mounted; d) attaching and fixing an on-site hydration type reinforcing mat to the position of the deteriorated cross section of the concrete structure; e) sprinkling supply water to supply moisture onto the water permeable upper surface shell 130 of the field hydration type reinforcing mat using the tufting connecting yarn; f) solidifying the premix binder in the field hydration reinforcing mat according to the hydration reaction caused by the feed water; and g) integrating the reinforcing mat with the concrete structure by the binder leaking through the partially permeable lower surface of the on-site hydration-type reinforcing mat according to the consolidation of the premix binder according to the hydration reaction, wherein the on-site hydration-type reinforcing mat is, a lower surface shell formed of a partially water-permeable or impermeable non-woven fabric; Outside the upper surface formed of a water-permeable non-woven fabric; A cement-based paste or cement-based mortar in a dry powder state prepared to inhibit hydration reaction, comprising: a premix binder installed to be supported between the lower surface and the upper surface; and a tufting connecting yarn as a spacer and connecting fiber, which is woven to penetrate through the upper outer sheath, the premix binder, and the lower outer sheath according to the tufting process of the loom to secure the upper outer sheath, the premix binder, and the lower outer sheath; And the hydration reaction of the cement-based paste or cement-based mortar occurs by the moisture supplied to the premix binder at the site for reinforcing the concrete structure, and it is characterized in that it is integrated with the concrete structure in contact with the lower surface shell.

Here, the concrete structure may be a drainage channel, a shoreline, a temporary road pavement, a road pavement for construction, or a road slope.

According to the present invention, as an on-site hydration type reinforcement mat for maintenance or reinforcement of a concrete structure, using a tufting connecting yarn according to the tufting process of a loom in a state in which the lower surface, the premix binder, and the upper surface are formed. The lower shell, the premix binder, and the upper shell can be tied and fixed in the vertical direction.

According to the present invention, by using a loom equipped with a conveyor system, automated production of on-site hydration-type reinforcing mats is possible by a collective tufting process to which tufting connecting yarns are applied, thereby reducing the manufacturing cost of on-site hydration-type reinforcing mats. can save

According to the present invention, it is possible to suppress the occurrence of cracks due to load action by increasing the tensile strength by filling the space within the field hydration type reinforcing mat with a non-directional short-fiber mixed binder.

1a to 1c is a view for explaining the field hydration type reinforcement mat using the impregnated cloth according to the prior art.
Figure 2 is a view for explaining the crack generation of the field hydration type reinforcing mat using the impregnated cloth according to the prior art shown in Figure 1.
Figure 3 is a view illustrating the installation of the cement composite material for on-site hydration according to the prior art in the waterway lining construction.
4A is an exploded perspective view of a flexible nonwoven cement composite as a cement composite for on-site hydration according to the prior art, FIG. 4B is a perspective view of a roll-type nonwoven cement composite, and FIG. 4C is a cross-sectional view of the nonwoven cement composite.
5 is a cross-sectional view showing a field hydration type reinforcing mat using a tufting connecting yarn according to an embodiment of the present invention.
6 is a perspective view showing a field hydration type reinforcing mat using a tufting connector according to an embodiment of the present invention.
7 is a perspective view illustrating a state in which a field hydration type reinforcing mat using a tufting connector according to an embodiment of the present invention is wound on a roll.
8 is a plan view showing a field hydration type reinforcing mat using a tufting connecting yarn according to an embodiment of the present invention.
9 is a cross-sectional view showing a field hydration type reinforcing mat manufacturing apparatus using a tufting connecting yarn according to an embodiment of the present invention.
10 is a view showing in detail a method of manufacturing a field hydration type reinforcing mat using a tufting connecting yarn according to an embodiment of the present invention.
11 is an operation flowchart illustrating a method for reinforcing a structure using a field hydration type reinforcing mat using a tufting connecting yarn according to an embodiment of the present invention.
12 is a view illustrating a structure reinforced by a method for reinforcing a concrete structure using an on-site hydration type reinforcing mat using a tufting connecting yarn according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art can easily implement them. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

Hereinafter, a field hydration type reinforcement mat using a tufting connecting yarn according to an embodiment of the present invention will be described with reference to FIGS. 5 to 8 , and a reinforcement mat according to an embodiment of the present invention is manufactured with reference to FIGS. 9 and 10 . An apparatus and a method of manufacturing a reinforcing mat will be described, and a method of reinforcing a concrete structure using a field hydration type reinforcing mat using a tufting connecting yarn according to an embodiment of the present invention will be described with reference to FIGS. 11 and 12 .

[Site hydration type reinforcement mat (100) using tufting connecting thread]

5 is a cross-sectional view showing an on-site hydration-type reinforcing mat using a tufting connector according to an embodiment of the present invention, and FIG. 6 is a perspective view showing an on-site hydration-type reinforcing mat using a tufting connector according to an embodiment of the present invention. to be.

5 and 6, the field hydration type reinforcement mat 100 using the tufting connecting yarn according to the embodiment of the present invention is a field hydration type reinforcement mat used by consolidating the premix binder by supplying moisture in the field. , a lower surface shell 110 , a premix binder 120 , an upper surface shell 130 , and a tufting connecting yarn 140 .

The lower shell 110 is formed of a partially water-permeable non-woven fabric or an impermeable tarpaulin, and the upper shell 130 is formed of a water-permeable non-woven fabric. For example, the upper shell 130 and the lower shell 110 may be each made of a water-permeable non-woven fabric, but depending on the characteristics of the concrete structure to be applied, the bottom shell 110 may be made of partially water-permeable or impermeable non-woven fabric. Also, in this case, the impermeable non-woven fabric may be a tarpaulin.

The premix binder (Premix Binder: 120) is a cement-based paste or cement-based mortar in a dry powder state prepared to inhibit hydration reaction, and is installed to be supported between the lower surface shell 110 and the upper surface shell 130, for example, When the reinforcing mat 100 is manufactured, the premix binder 120 is laid on the lower outer shell 110, and then the upper surface 130 is laminated on the lower surface shell 110 and the upper surface shell 130. ) is placed between

Specifically, when reinforcing the concrete structure, the hydration reaction of the cement-based paste or cement-based mortar occurs by the moisture supplied to the premix binder 120 , and is integrated with the concrete structure in contact with the lower surface shell 110 .

Tufting fiber: 140 is a spacer and connecting fiber, and is woven to penetrate the upper outer sheath 130, premix binder 120 and lower outer sheath 110 according to the tufting process of the loom. Knitting) to fix the upper shell 130, the premix binder 120, and the bottom shell 110 at once. Here, the tufting connecting yarn 140 is a polypropylene (PP) fiber or polyethylene (PE) fiber having high strength, and the lengthwise and widthwise intervals of the tufting connecting yarn 140 are 1 to 3, respectively. It is preferable that the spacing is cm.

In the case of the field hydration type reinforcing mat 100 using the tufting connector according to the embodiment of the present invention, tufting of the loom in the state in which the lower surface shell 110, the premix binder 120, and the upper surface shell 130 are formed (Tufting) Using the tufting connection yarn 140 according to the process, the lower shell 110, the premix binder 120, and the upper shell 130 can be fixed by binding in the vertical direction. Accordingly, the hydration reaction of the premix binder 120 occurs by the moisture supplied to the premix binder 120 at the concrete structure reinforcement site, so that it can be integrated with the concrete structure in contact with the lower surface shell 110 .

Specifically, the premix binder 120 is made of a cement-based paste in a dry state without fine aggregate, but when the thickness of the field hydration type reinforcing mat 100 increases, it is preferable from an economical point of view to prepare a cement-based mortar by adding fine aggregate to the paste. Do. Therefore, it is preferable to apply a cement-based paste when the thickness of the field hydration type reinforcing mat 100 is less than 10 mm, and to apply a cement-based mortar when it is 10 mm or more.

When the premix binder 120 is a cement-based paste, the mixing ratio is given as shown in Table 1 below, and when the premix binder 120 is a cement-based mortar, the mixing ratio is given as shown in Table 2 below.

Specifically, as shown in Table 1, when the premix binder 120 is a cementitious paste, 100 parts by weight of cement, 0.5 to 2 parts by weight of a shrinkage reducing agent, 0.5 to 2 parts by weight of a swelling agent, and 0.6 to 1.0 parts by weight of superabsorbent A resin (SAP; Super Absorbent Polymer) and 3 to 5 parts by weight of short fibers may be included, and 1-2% of the total volume of the premix binder 120 may be mixed with the short fibers. At this time, the content of each component may be designed to be mixed to match the characteristics of the structure to be built.

In addition, as shown in Table 2, when the premix binder 120 is a cementitious mortar, 100 parts by weight of cement, 0.5 to 2 parts by weight of a shrinkage reducing agent, 0.5 to 2 parts by weight of a swelling agent, and 0.6 to 1.0 parts by weight of a superabsorbent resin (SAP), including 3 to 5 parts by weight of short fibers and 60 to 80 parts by weight of fine aggregate, wherein the short fibers may contain 1 to 2% of the total volume of the premix binder 120 . Here, the short fibers may be polyvinyl alcohol (PVA) fibers, polypropylene (PP) fibers, polyethylene (PE) fibers, or aramid fibers of 5 to 10 cm.

In addition, when the mixing amount of short fibers mixed in the premix binder 120 is large, the distance between the tufting connecting yarns 140 is large, and when the mixing amount of the single fibers is small, the tufting connecting yarn 140 is The gap can be narrowed.

As described above, the field hydration reinforcing mat 100 according to the embodiment of the present invention provides moisture in the form of supply water to the premix binder 120 rather than the blending water, so that the moisture is evenly absorbed by the premix binder 120 . Also, in order to reduce the shrinkage of the premix binder 120 , it is important to maintain the internal humidity of the premix binder 120 to a significant degree for a certain period of time, for example, about 80% or more.

This is advantageous in securing the performance of the premix binder 120 when the internal humidity of the premix binder 120 is 80% or less, the hydration reaction is stopped and the strength expression is stopped, so that the wet state is continuously formed. In particular, since all of the supplied water cannot be utilized for the hydration reaction due to the nature of the field hydration reinforcing mat 100 according to the embodiment of the present invention, according to the embodiment of the present invention, a part of the surplus water is converted to a superabsorbent polymer (SAP). ) and short fibers are maintained in the absorbed state, and when the premix binder 120 is dried due to the consumption of moisture due to the hydration reaction, the water present in the SAP and the short fibers are released to the premix binder 120 to complete the hydration reaction. It is desirable to maintain adequate humidity until

Through this process, internal curing is possible, forming a dense internal structure of the reinforcing mat, and the effect of reducing shrinkage cracks is expressed. In particular, as described above, the premix binder 120 preferably contains 0.6 to 1.0 parts by weight of the superabsorbent polymer (SAP) based on 100 parts by weight of cement.

In addition, in the case of the premix binder 120 according to the embodiment of the present invention, 1 to 2% of short fibers are mixed with respect to the total volume ratio of the premix binder 120 . For example, the short fibers to be incorporated are polyvinyl alcohol (PVA) fibers, polypropylene (PP) fibers, polyethylene (PE) fibers, or aramid fibers, and have a length of about 5 to 10 cm. Here, the reason for mixing the short fibers in the premix binder 120 is as follows.

First, it is possible to improve the mechanical properties of the premix binder 120 in general, such as crack control, prevention of brittle fracture, improvement of tensile and flexural strength, etc., and secondly, the upper surface 130, the premix binder 120 in the form of mortar or paste. And after the fixing operation of the lower outer sheath 110, the tufting connecting yarn 140 and the short fibers work together in the space between the upper outer sheath 130 and the lower outer sheath 110 to firmly tighten the premix binder 120. It can be fixed and maintained, thirdly, the feed water can be uniformly absorbed in the premix binder 120 due to the capillary phenomenon of short fibers, and fourthly, the short fibers absorb a part of the feed water like super absorbent polymer (SAP). Then, the moisture consumed during the hydration reaction may be supplied to the premix binder 120 .

On the other hand, Figure 7 is a perspective view showing a state in which the field hydration-type reinforcing mat using the tufting connector according to an embodiment of the present invention is wound on a roll, and Figure 8 is a tufting connector using the tufting connector according to the embodiment of the present invention. It is a plan view showing the field hydration type reinforcing mat.

In the case of the field hydration type reinforcing mat 100 using the tufting connector according to the embodiment of the present invention, as shown in FIG. 7 , it may be wound in a roll form on the reinforcing mat winder 270 .

In addition, as shown in FIG. 8 , in the case of the field hydration type reinforcing mat 100 using the tufting connecting yarn according to the embodiment of the present invention, the tufting connecting yarn 140 is the premix binder 120 . It is densely tufted (140a) at both ends of the upper surface shell 130 along the longitudinal direction of the field hydration type reinforcement mat 100 to prevent side leakage of the field hydration type reinforcement mat 100, and the width direction of the field hydration type reinforcement mat 100 Accordingly, it may be densely tufted at predetermined intervals (140b).

For example, when the field hydration type reinforcing mat 100 is cut and used in the field, it is densely packed at predetermined intervals along the width direction of the field hydration type reinforcing mat 100 to prevent leakage of the premix binder 120 . It can be cut along the cutting line between the tufted tufted connecting yarns 140 .

After all, according to an embodiment of the present invention, as an on-site hydration reinforcing mat for maintenance or reinforcement of a concrete structure, tufting of the loom in a state in which the lower surface shell, the premix binder and the upper surface shell are formed ) Using the tufting connecting yarn according to the process, the lower outer shell, the premix binder, and the upper surface can be tied and fixed in the vertical direction. In addition, according to the embodiment of the present invention, it is possible to suppress the occurrence of cracks due to the load action by filling the space in the field hydration type reinforcement mat with a non-directional short fiber mixed binder to increase the tensile strength.

[Manufacturing method of field hydration type reinforcing mat using tufting connecting yarn]

9 is a cross-sectional view showing an apparatus for producing an on-site hydration type reinforcing mat using a tufting connector according to an embodiment of the present invention, and FIG. 10 is a production of an on-site hydration type reinforcing mat using a tufting connector according to an embodiment of the present invention. It is a drawing which shows the method in detail.

First, it is preferable to manufacture the field hydration type reinforcing mat 100 using a tufting connector according to an embodiment of the present invention to have a width of about 2 m in consideration of manufacturing and transportation, and a conveyor system for continuous production. The reinforcing mat manufacturing apparatus 200 according to an embodiment of the present invention is produced on a weaving machine equipped with, as shown in FIG. 9, a conveyor belt 210, a lower surface skin roll 220, a premix binder supply hopper ( 230 ), a compression roller 240 , an upper skin roll 250 , a connecting yarn roll 260 , and a reinforcing mat winder 270 , but are not limited thereto.

9 and 10, in the field hydration type reinforcement mat manufacturing method using the tufting connecting yarn according to the embodiment of the present invention, the field number using the loom type reinforcement mat manufacturing apparatus 200 equipped with a conveyor system As a method of manufacturing a fire-type reinforcing mat, first, the lower surface sheath 110 wound on the lower surface skin roll 220 is supplied on the conveyor belt 210 as shown in FIG. 10 a) (S110).

Next, the premix binder 120 stored in the premix binder supply hopper 230 is installed on the lower shell 110 (S120). Specifically, as shown in FIG. 10 b), the premix binder 120 having a height greater than the required thickness is installed on the upper surface of the lower surface shell 110 moving along the conveyor belt 210 .

Next, the premix binder 120 installed on the lower surface shell 110 is compressed using the compression roller 240 (S130). That is, the premix binder 120 is compacted using a compression roller 240 or the like, and compressed so that the premix binder 120 has a required thickness.

Next, the upper skin 130 wound on the upper skin roll 250 is supplied onto the compressed premix binder 120 as shown in FIG. 10 c) (S140).

Next, a tufting process is performed on the upper surface outer sheath 130, the premix binder 120, and the lower surface sheath 110 using the tufting connecting yarn 140 wound on the connecting yarn roll 260 (S150). ). Specifically, as shown in d) of FIG. 10, the upper shell 130, the premix binder 120, and the bottom shell 110 are collectively fixed with a plurality of tufting fibers (Tufting Fiber: 140). Proceed with the tufting process.

Next, the reinforcing mat 100 completed by the tufting process is wound on the reinforcing mat winder 270 (S160).

The in-situ hydration-type reinforcing mat 100 includes a lower surface shell 110 formed of a partially permeable or impermeable nonwoven fabric; The upper shell 130 is formed of a water-permeable non-woven fabric; A cement-based paste or cement-based mortar in a dry powder state prepared to inhibit hydration reaction, the premix binder being installed to be supported between the lower surface 110 and the upper surface 130 (Premix Binder: 120); And as a spacer and connecting fiber, it is woven so as to penetrate the upper skin 130, the premix binder 120 and the lower skin 110 according to the tufting process of the weaving machine, so that the upper skin 130, the premix binder ( 120) and a tufting connecting yarn (Tufting Fiber: 140) for collectively fixing the lower shell 110.

Here, the tufting connecting yarn 140 applies polypropylene (PP) fiber, polyethylene (PE) fiber, etc. having high strength, and the lengthwise and widthwise intervals of the tufting connecting yarn 140 are 1 to 3 A spacing of cm is appropriate. At this time, when the mixing amount of single fibers is large, the interval between the tufting connecting yarns 140 is increased, and, when the mixing amount of the single fibers is small, narrowing the interval of the tufting connecting yarns 140 is a reinforcing mat ( 100) It helps to maintain the premix binder 120 in the space.

Accordingly, the tufting connecting yarn 140 maintains the premix binder 120 in the space between the lower surface 110 and the upper surface 130 during the production, movement, mounting, and hydration reaction of the reinforcing mat 100 . In addition, after the premix binder 120 is solidified, the tufting connecting yarn 140 is subjected to the vertical stress and the in-plane shear stress acting on the reinforcing mat 100 according to the embodiment of the present invention. acts as a resistance. In addition, the tufting connecting yarn 140 is densely tuff at both ends of the upper surface shell 130 along the longitudinal direction of the field hydration type reinforcing mat 100 to prevent side leakage of the premix binder 120 . It can be tufted densely at predetermined intervals along the width direction of the field hydration-type reinforcing mat 100 . For example, when the field hydration reinforcing mat 100 is cut and used in the field, it is densely packed at predetermined intervals along the width direction of the field hydration type reinforcing mat 100 to prevent leakage of the premix binder 120 . It may be cut along the cutting line between the tufted tufting connecting yarns 140 .

In the case of the "impregnated fabric" disclosed in the aforementioned Korean Patent Registration No. 10-1812476, the vertically arranged connecting fibers are the reinforcing material, whereas in the case of the reinforcing mat 100 according to the embodiment of the present invention, the premix The short fibers mixed in the binder 120 and the tufting connecting yarn 140 serve as a reinforcing material. The principle of the reinforcing mat 100 according to the embodiment of the present invention is that after the reinforcing mat 100 is mounted at a required position, the supply water is sprayed (sprayed or press-fitted) through the upper surface shell 130 capable of permeating the premix When the binder 120 is solidified by the hydration reaction, the short fibers, the tufting connecting yarn 140 and the premix binder 120 are integrated together, thereby structurally resisting external force.

At this time, in order to suppress the hydration reaction from moisture in the process of storage after the production of the in-situ hydration-type reinforcing mat 100, it is preferable to store the outer surface of the in-situ hydration-type reinforcing mat 100 in a plastic wrap.

After all, according to the on-site hydration-type reinforcing mat manufacturing method using the tufting connector according to the embodiment of the present invention, by using a loom equipped with a conveyor system, the on-site hydration type by the collective tufting process to which the tufting connector is applied. Automated production of reinforcing mats is possible, thereby reducing the manufacturing cost of on-site hydration reinforcing mats.

[Method of reinforcing concrete structure using on-site hydration type reinforcing mat 100 using tufting connecting yarn]

11 is an operation flowchart illustrating a method for reinforcing a concrete structure using an on-site hydration type reinforcing mat using a tufting connecting yarn according to an embodiment of the present invention.

Referring to FIG. 11 , in the method of reinforcing a structure using an on-site hydration type reinforcing mat using a tufting connecting yarn according to an embodiment of the present invention, first, a deteriorated cross section of a concrete structure requiring repair or reinforcement is removed (S210).

Next, the field hydration type reinforcing mat 100 using the tufting connecting yarn is manufactured and prepared (S210). That is, the field hydration type reinforcing mat 100 using the tufting connecting yarn according to the embodiment of the present invention described above is manufactured and transported to the concrete structure construction site, and in a roll form to correspond to the size of the deteriorated cross section of the concrete structure. The field hydration type reinforcing mat 100 is cut and used.

Here, the tufting connection yarn 140 is the premix binder 120 in the space between the lower surface shell 110 and the upper surface shell 130 during the production, movement, mounting and hydration reaction of the on-site hydration type reinforcing mat 100 . ), and after the premix binder 120 is solidified in the field, the tufting connecting yarn 140 is a vertical stress and a surface direction shear stress acting on the in-situ hydration type reinforcing mat 100 . acts as a resistance to As described above, the in-situ hydration-type reinforcing mat 100 includes a lower surface shell 110 formed of a partially permeable or impermeable nonwoven fabric; The upper shell 130 is formed of a water-permeable non-woven fabric; A cement-based paste or cement-based mortar in a dry powder state prepared to inhibit hydration reaction, the premix binder being installed to be supported between the lower surface 110 and the upper surface 130 (Premix Binder: 120); And as a spacer and connecting fiber, it is woven so as to penetrate the upper skin 130, the premix binder 120, and the lower skin 110 according to the tufting process of the loom, and the upper skin 130, the premix binder 120) and a tufting connector 140 for collectively fixing the lower shell 110.

In particular, the tufting connecting yarn 140 is densely turf at both ends of the upper surface sheath 130 along the longitudinal direction of the field hydration type reinforcing mat 100 to prevent side leakage of the premix binder 120 . It can be densely tufted at predetermined intervals along the width direction of the field hydration type reinforcing mat 100 . For example, when the field hydration type reinforcing mat 100 is cut and used in the field, it is densely packed at predetermined intervals along the width direction of the field hydration type reinforcing mat 100 to prevent leakage of the premix binder 120 . It can be cut along the cutting line between the tufted tufted connecting yarns 140 .

Next, a primer is applied to the part where the field hydration type reinforcing mat 100 is to be mounted (S230).

Next, the in-situ hydration type reinforcing mat 100 is attached and fixed to the position of the deteriorated section of the concrete structure (S240).

Next, supply water is sprayed to supply moisture on the permeable upper surface shell 130 of the field hydration type reinforcing mat 100 using the tufting connecting yarn (S250).

Next, according to the hydration reaction due to the feed water, the premix binder 120 in the on-site hydration type reinforcing mat 100 is solidified (S260).

Next, the reinforcing mat is integrated with the concrete structure by the binder 120 leaking through the partially permeable lower surface shell 110 of the in-situ hydration type reinforcing mat 100 according to the consolidation of the premix binder 120 according to the hydration reaction. make it (S270).

In the case of the structure reinforcement method using the in-situ hydration type reinforcing mat using the tufting connecting yarn according to the embodiment of the present invention, the cement-based paste or cement-based cement-based paste or cement-based by moisture supplied to the premix binder 120 at the site for reinforcing concrete structures The hydration reaction of the mortar occurs, and the lower surface may be integrated with the concrete structure in contact with the outer shell 110 . Here, the concrete structure is the road shown in the drainage channel / shoreline 310 shown in Fig. 12a), the temporary road pavement or the road pavement 320 for construction shown in Fig. 12b), or the road shown in Fig. 12c). It may be a slope 330, but is not limited thereto.

Specifically, when moisture is supplied to the in-situ hydration reinforcing mat 100, the paste or mortar component inside the in-situ hydration reinforcing mat 100 is leaked through the lower surface shell 110 in contact with the existing concrete structure. It is integrated with the cross section of the concrete structure. To this end, the lower surface shell 110 in contact with the concrete structure can be partially permeable, and it is necessary to make a material having appropriate voids and density so that the premix binder 120 can leak through the lower surface shell 110 .

Accordingly, when the on-site hydration-type reinforcing mat 100 is solidified, it behaves integrally with the existing concrete structure, thereby improving load-bearing capacity and seismic performance, and also a protective layer that protects the existing concrete structure from external environments such as chloride and fire. may play a role.

On the other hand, the on-site hydration type reinforcing mat 100 according to the embodiment of the present invention can be applied to the waterway, gutter, and slope protection hole construction work, and there is no need for a separate formwork during construction, and the thickness of the structure to be built can be precisely maintained, shortening the construction period and improving construction quality.

12 is a view illustrating a structure reinforced by a method for reinforcing a concrete structure using an on-site hydration type reinforcing mat using a tufting connector according to an embodiment of the present invention. In the case of , indicates that it is applied to construction, FIG. 12 b) indicates that it is applied to a temporary, construction road pavement concrete structure, and FIG. 12 c) indicates that it is applied as a protection work when the concrete structure is a road slope.

12 a) to c), the on-site hydration-type reinforcing mat 100 according to an embodiment of the present invention is a field hydration-type reinforcing mat 100 at a site requiring rapid construction of concrete pavement, such as a road for construction. It can also be used to construct road pavement.

In addition, the reinforcing mat according to an embodiment of the present invention may be utilized for shore construction, and may be applied to repair/reinforcement work of existing structures.

In addition, by using the on-site hydration-type reinforcement mat 100 according to the embodiment of the present invention, reinforcement construction can be performed against loads and shocks acting from the outside, such as existing concrete structures and protective structures, and also on the inner surface of the old sewage pipe. The sewage pipe may be rehabilitated by construction, and the on-site hydration type reinforcement mat 100 according to the embodiment of the present invention may be constructed on the exterior surface of the building with an insulating material to construct the exterior insulation, reinforce the exterior surface of the building, or can also be constructed.

After all, according to the embodiment of the present invention, first, compared with the conventional reinforced concrete structure construction, formwork construction and rebar assembly process are omitted, so the construction period can be greatly shortened. Second, when constructing using a field hydration reinforcing mat in which short fibers and premix binder are integrated, the thickness can be kept constant, so the construction quality is excellent and precise construction is possible, thereby improving the durability and safety of the structure. . Third, it can be effectively used not only for the construction of new structures but also for the maintenance of existing structures. Fourth, since all materials required for construction, except for water, are integrated, material storage, supply and demand, and construction are easy to reduce construction costs. In addition, a textile grid may be optionally disposed as a main reinforcing material to resist tensile stress acting in the horizontal direction.

The above description of the present invention is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. do.

100: Field hydration type reinforcement mat using a tufting connector
200: reinforcing mat production device
110: lower shell 120: fiber mixed premix binder
130: upper surface shell 140: tufting (Tufting) connector
210: conveyor belt 220: lower skin roll
230: premix binder supply hopper 240: pressing roller
250: top skin roll 260: connecting yarn roll
270: reinforcing mat winder
310: Concrete structure (drainage / shoreline)
320: concrete structure (temporary / construction road pavement)
330: concrete structure (road slope)

Claims (26)

In the field hydration type reinforcing mat used by consolidating the premix binder by supplying moisture in the field,
The outer shell 110 is formed of a partially permeable or impermeable non-woven fabric;
The upper shell 130 is formed of a water-permeable non-woven fabric;
A cement-based paste or cement-based mortar in a dry powder state prepared to inhibit hydration reaction, the premix binder being installed to be supported between the lower surface 110 and the upper surface 130 (Premix Binder: 120); and
As a spacer and connecting fiber, it is woven to penetrate through the upper outer sheath 130, the premix binder 120, and the lower outer sheath 110 according to the tufting process of the loom, and the upper outer sheath 130, premix binder 120 ) and a tufting connecting yarn (Tufting Fiber: 140) for collectively fixing the lower outer shell 110,
Hydration reaction of the premix binder 120 occurs by the moisture supplied to the premix binder 120 at the concrete structure reinforcement site, and is integrated with the concrete structure in contact with the lower surface shell 110,
The tufting connecting yarn 140 is densely tufted at both ends of the upper shell 130 along the longitudinal direction of the field hydration type reinforcing mat 100 to prevent side leakage of the premix binder 120, and , Field hydration type reinforcement mat using a tufting connector, characterized in that it is densely tufted at predetermined intervals along the width direction of the field hydration type reinforcing mat 100. According to claim 1,
The tufting connecting yarn 140 applies polypropylene (PP) fiber or polyethylene (PE) fiber having high strength, and the lengthwise and widthwise intervals of the tufting connecting yarn 140 are 1 to 3 cm apart, respectively. Field hydration type reinforcement mat using tufting connecting yarn, characterized in that. delete According to claim 1,
When the field hydration reinforcing mat 100 is cut and used in the field, it is densely tufted at predetermined intervals along the width direction of the field hydration type reinforcing mat 100 to prevent leakage of the premix binder 120 . Field hydration type reinforcement mat using tufting connecting yarn, characterized in that it is cut along the cut line between the tufting connecting yarns (140). According to claim 1,
When the thickness of the in-situ hydration-type reinforcing mat 100 is less than 10 mm, the cement-based paste is applied as the premix binder 120, and when the thickness of the in-situ hydration type reinforcing mat 100 is 10 mm or more, the premix binder 120 Field hydration type reinforcing mat using tufting connecting yarn, characterized in that a cement-based mortar is applied. 6. The method of claim 5,
When the premix binder 120 is a cementitious paste, 100 parts by weight of cement, 0.5 to 2 parts by weight of a shrinkage reducing agent, 0.5 to 2 parts by weight of an expanding agent, 0.6 to 1.0 parts by weight of superabsorbent polymer (SAP), and 3 to 5 parts by weight of A field hydration type reinforcement mat using a tufting connecting yarn, characterized in that it contains short fibers, wherein 1-2% of the total volume of the premix binder 120 is mixed with the short fibers. 6. The method of claim 5,
When the premix binder 120 is a cement-based mortar, 100 parts by weight of cement, 0.5 to 2 parts by weight of a shrinkage reducing agent, 0.5 to 2 parts by weight of an expanding agent, 0.6 to 1.0 parts by weight of superabsorbent polymer (SAP), 3 to 5 parts by weight It contains short fibers and 60 to 80 parts by weight of fine aggregate, and the short fibers are field hydration type reinforcement mat using tufting connecting yarn, characterized in that 1-2% of the total volume of the premix binder 120 is mixed. 8. The method of claim 6 or 7,
The short fibers are polyvinyl alcohol (PVA) fibers, polypropylene (PP) fibers, polyethylene (PE) fibers, or aramid fibers of 5 to 10 cm. 9. The method of claim 8,
When the mixing amount of short fibers mixed in the premix binder 120 is large, the distance between the tufting connecting yarns 140 is formed large, and when the mixing amount of the single fibers is small, the spacing between the tufting connecting yarns 140 is reduced. Field hydration type reinforcement mat using tufting connecting yarn, characterized in that it is formed narrowly. 8. The method of claim 6 or 7,
Field hydration type reinforcement mat using a tufting connecting yarn, characterized in that it reduces the shrinkage of the premix binder 120 by maintaining the internal humidity of the premix binder 120 at 80% or more for a certain period of time. 8. The method of claim 6 or 7,
A portion of the surplus water in the feed water supplied to the premix binder 120 is maintained in a state in which the superabsorbent polymer (SAP) and short fibers are absorbed, and the premix binder 120 consumes moisture due to the hydration reaction. When dried, the water present in the superabsorbent polymer (SAP) and the short fibers are released and an appropriate humidity is maintained until the hydration reaction is completed. In the field hydration type reinforcement mat manufacturing method using the loom type reinforcement mat manufacturing apparatus 200 equipped with a conveyor system,
a) supplying the lower surface skin 110 wound on the lower surface skin roll 220 on the conveyor belt 210;
b) laying the premix binder 120 stored in the premix binder supply hopper 230 on the lower shell 110 ;
c) compressing the premix binder 120 installed on the lower outer shell 110 using a compression roller 240 ;
d) supplying the upper skin 130 wound on the upper skin roll 250 onto the compressed premix binder 120 ;
e) The tufting process is performed on the upper outer sheath 130, the premix binder 120, and the lower outer sheath 110 using the tufting connecting yarn (Tufting Fiber: 140) wound on the connecting yarn roll 260. step; and
f) winding the field hydration type reinforcing mat 100 completed by the tufting process on the reinforcing mat winder 270,
The in-situ hydration-type reinforcing mat 100 includes a lower surface shell 110 formed of a partially permeable or impermeable nonwoven fabric; The upper shell 130 is formed of a water-permeable non-woven fabric; A cement-based paste or cement-based mortar in a dry powder state prepared to inhibit hydration reaction, the premix binder being installed to be supported between the lower surface 110 and the upper surface 130 (Premix Binder: 120); And as a spacer and connecting fiber, it is woven to penetrate through the upper outer sheath 130, the premix binder 120, and the lower outer sheath 110 according to the tufting process of the loom, and the upper outer sheath 130, the premix binder 120, and It includes a tufting connecting yarn (Tufting Fiber: 140) for collectively fixing the lower shell (110); And
The tufting process of step e) is a tufting connecting yarn, characterized in that the upper outer sheath 130, the premix binder 120, and the lower outer sheath 110 are collectively fixed with a plurality of tufting connecting yarns 140. A method of manufacturing an on-site hydration type reinforcement mat using 13. The method of claim 12,
Site using a tufting connector, characterized in that the premix binder 120 having a height greater than the required thickness is installed on the upper surface of the lower surface shell 110 moving along the conveyor belt 210 in step b) A method of manufacturing a hydration-type reinforcing mat. 13. The method of claim 12,
The tufting connecting yarn 140 is the premix binder 120 in the space between the lower surface shell 110 and the upper surface shell 130 during the production, movement, mounting and hydration reaction of the field hydration type reinforcing mat 100 . After the premix binder 120 is solidified in the field, the tufting connector 140 resists the vertical stress and the in-plane shear stress acting on the in-situ hydration type reinforcing mat 100 . A method of manufacturing a field hydration reinforcing mat using a tufting connecting yarn, characterized in that it plays a role. 13. The method of claim 12,
The tufting connecting yarn 140 applies polypropylene (PP) fiber or polyethylene (PE) fiber having high strength, and the lengthwise and widthwise intervals of the tufting connecting yarn 140 are 1 to 3 cm apart, respectively. A method of manufacturing a field hydration type reinforcing mat using a tufting connecting yarn, characterized in that 13. The method of claim 12,
The tufting connecting yarn 140 is densely tufted at both ends of the upper shell 130 along the longitudinal direction of the field hydration type reinforcing mat 100 to prevent side leakage of the premix binder 120, and , A method of manufacturing a field hydration type reinforcing mat using a tufting connector, characterized in that it is densely tufted at predetermined intervals along the width direction of the field hydration type reinforcing mat 100 . 13. The method of claim 12,
When the field hydration reinforcing mat 100 is cut and used in the field, it is densely tufted at predetermined intervals along the width direction of the field hydration type reinforcing mat 100 to prevent leakage of the premix binder 120 . A method of manufacturing a field hydration type reinforcing mat using a tufting connecting yarn, characterized in that it is cut along the cut line between the tufting connecting yarns (140). 13. The method of claim 12,
Short fibers are mixed in the premix binder 120, but when the amount of the single fibers is large, the distance between the tufting connecting yarns 140 is formed large, and when the mixing amount of the single fibers is small, the tufting connecting yarns ( 140), a method of manufacturing a field hydration reinforcing mat using a tufting connecting yarn, characterized in that the gap is narrowed. 13. The method of claim 12,
Tufting connecting yarn, characterized in that the outer surface of the on-site hydration reinforcing mat 100 is wrapped in plastic and stored in order to suppress a hydration reaction from moisture in the process of storage after the production of the on-site hydration reinforcing mat 100 A method of manufacturing an on-site hydration type reinforcement mat using In the method of reinforcing a concrete structure using an on-site hydration type reinforcing mat,
a) removing the deteriorated section of the concrete structure in need of repair or reinforcement;
b) manufacturing and preparing a field hydration type reinforcement mat 100 using a tufting connector;
c) applying a primer to the part on which the field hydration reinforcing mat 100 is to be mounted;
d) attaching and fixing the on-site hydration type reinforcing mat 100 to the position of the deteriorated cross-section of the concrete structure;
e) spraying water supplied to the water permeable upper surface of the reinforcing mat 100 using the tufting connecting yarn to supply moisture;
f) solidifying the premix binder 120 in the field hydration reinforcing mat 100 according to the hydration reaction caused by the feed water; and
g) The reinforcing mat is integrated with the concrete structure by the binder 120 leaking through the partially permeable lower surface shell 110 of the in-situ hydration type reinforcing mat 100 according to the consolidation of the premix binder 120 according to the hydration reaction. comprising steps,
The in-situ hydration-type reinforcing mat 100 includes a lower surface shell 110 formed of a partially permeable or impermeable nonwoven fabric; The upper shell 130 is formed of a water-permeable non-woven fabric; A cement-based paste or cement-based mortar in a dry powder state prepared to inhibit hydration reaction, the premix binder being installed to be supported between the lower surface 110 and the upper surface 130 (Premix Binder: 120); And as a spacer and connecting fiber, it is woven to penetrate through the upper outer sheath 130, the premix binder 120, and the lower outer sheath 110 according to the tufting process of the loom, and the upper outer sheath 130, the premix binder 120 and It includes a tufting connecting yarn (Tufting Fiber: 140) for collectively fixing the lower shell (110); And
Hydration reaction of the cement-based paste or cement-based mortar occurs by the moisture supplied to the premix binder 120 at the site for reinforcing the concrete structure, characterized in that it is integrated with the concrete structure in contact with the lower surface shell 110 A method of reinforcing concrete structures using on-site hydration reinforcing mats using tufting connectors 21. The method of claim 20,
The concrete structure is a concrete structure reinforcement method using an on-site hydration type reinforcement mat using a tufting connecting yarn, characterized in that it is a drainage channel, a reef, a temporary road pavement, a road pavement for construction or a road slope. 21. The method of claim 20,
In step b), the field hydration type reinforcing mat 100 is manufactured and transported to the concrete structure construction site, and the field hydration type reinforcing mat 100 in a roll form is cut and used to correspond to the size of the deteriorated cross section of the concrete structure. A method of reinforcing a concrete structure using a field hydration type reinforcing mat using a tufting connecting yarn, characterized in that. 21. The method of claim 20,
The tufting connecting yarn 140 is the premix binder 120 in the space between the lower surface shell 110 and the upper surface shell 130 during the production, movement, mounting and hydration reaction of the field hydration type reinforcing mat 100 . After the premix binder 120 is solidified in the field, the tufting connector 140 resists the vertical stress and the in-plane shear stress acting on the in-situ hydration type reinforcing mat 100 . A method of reinforcing a concrete structure using an on-site hydration type reinforcement mat using a tufting connector, characterized in that it plays a role. 21. The method of claim 20,
The tufting connecting yarn 140 applies polypropylene (PP) fiber or polyethylene (PE) fiber having high strength, and the lengthwise and widthwise intervals of the tufting connecting yarn 140 are 1 to 3 cm apart, respectively. A method of reinforcing concrete structures using on-site hydration-type reinforcing mats using tufting connecting yarns, characterized in that 21. The method of claim 20,
The tufting connecting yarn 140 is densely tufted at both ends of the upper shell 130 along the longitudinal direction of the field hydration type reinforcing mat 100 to prevent side leakage of the premix binder 120, and , Concrete structure reinforcement method using on-site hydration-type reinforcing mat using tufting connecting yarn, characterized in that it is densely tufted at predetermined intervals along the width direction of the field hydration-type reinforcing mat 100. 21. The method of claim 20,
When the field hydration reinforcing mat 100 is cut and used in the field, it is densely tufted at predetermined intervals along the width direction of the field hydration type reinforcing mat 100 to prevent leakage of the premix binder 120 . A method of reinforcing a concrete structure using a field hydration type reinforcing mat using a tufting connector, characterized in that it is cut along the cut line between the tufting connectors 140.

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