KR20210115197A - Concrete composite mat which is pattern backstitch for preventing damage of reinforcement member - Google Patents

Abstract

The present invention relates to an onsite hydration concrete mat having a cement-restricting storage space and, more specifically, to an onsite hydration concrete mat having a cement-restricting storage space which allows cement to be hardened to become a concrete body if a flexible mat is installed at a site and then water is sprayed on the mat to be used as a finishing material of a water storage tank, a waterway, a slope, etc. and a replacement of shotcrete work of a tunnel and to be also used as geosynthetic clay liners (GCLs) for engineering construction. The onsite hydration concrete mat comprises: upper fabric having a space through which cement passes, and including yarn having an elastic force; lower fabric woven in a high density to prevent cement to penetrate the same, and including yarn having an elastic force; and a restricting cell member installed between the upper fabric and the lower fabric, and having a horizontal support member and a vertical support member crossing to form a dividing space in which cement is stored. The upper fabric and the lower fabric are coupled by fixing yarn.

Description

In-situ hydration concrete mat having a storage space to bind cement {Concrete composite mat which is pattern backstitch for preventing damage of reinforcement member}

The present invention relates to an on-site hydration concrete mat having a storage space that binds cement. Specifically, after installing a flexible mat on the site, when water is sprayed on the mat, the cement hardens and becomes a concrete body. It relates to an in-situ hydrated concrete mat having a storage space that binds cement that can be used as a finishing material for waterways, slopes, etc., and can also be used as clay cladding materials (GCLs) for civil construction.

In the case of large-scale land development, road construction, reclaimed land adjustment construction, etc., filling slopes and cut slopes are inevitably formed, and various construction methods are used to protect the surface layer of the slope. it's a technique

Wet concrete manufactured in a factory in the form of ready-mixed concrete is transported by vehicle, shaped with a formwork, etc. at the location where it is intended to be placed, poured and hardened to form a concrete protective layer. The shotcrete method, which is a spraying technology, is applied on steep cut slopes, and the 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.

However, in the shotcrete method, the equipment is excessively used for the operation of spraying liquid on the excavated surface, and it requires a lot of time for preliminary preparation work, and since it is poured using a pump, noise is generated during operation and the tip of the nozzle is removed by the operator. There is a problem in that the operator inhales the particles when spraying because they hold and work.

Concrete is poured in storage tanks, waterways, and artificial lakes to finish the slope. At this time, molds are used to cure the concrete while preventing leakage. There are problems such as taking a lot of time and an excessive amount of manpower during pre-preparation work and pouring work for pouring.

To solve this problem, an on-site hydration concrete mat is applied, which is installed on the site in the form of a composite mat with dry cement mixed powder, then hydrated by simple water spraying and spraying. have the advantage that

For the in-situ hydration concrete mat, the impregnated fabric in Korean Patent Laid-Open No. 2011-0117203 is a densely knitted bottom layer 10, a more loosely knitted top layer 12, and an underlying bottom layer ( 10 ) and a knitted fabric having connecting fibers ( 14 ) extending across the space ( 16 ) between the upper upper layer ( 12 ). The above-mentioned Republic of Korea Patent Publication No. 2011-0117203 has the following disadvantages.

First, since the connecting fibers 14 are installed in the vertical direction, there is a disadvantage in that the tensile force in the longitudinal direction is weak, and the vertical connecting fibers act as a weak point against external forces and become a breaking point of the hardened concrete mat. There is a disadvantage in that the breaking strength is lowered.

Second, when the mat is cut, there is a problem in that a large amount of cement, the filling material, is lost around the cut surface, and the penetration of moisture (water) causes a time difference between the hardening of the surface part and the center part, and the physical properties change. , since the space 16 between the bottom layer 10 and the upper layer 12 is formed by using the connecting fiber 14, it is difficult to control the curing thickness with the amount of filling.

In addition, Korean Patent Laid-Open No. 2014-0109869 discloses that, as shown in the accompanying drawings, a transmission layer 20 configured in a mesh form on one side is bonded to the structural layer 40 and the structural layer 40 is formed in a sheet form. In the structure in which the impermeable layer 50 is bonded to each other, the structure layer 40 is filled with cement particles 31 .

The cement composite of Korea Patent Application Laid-Open No. 2014-0109869 having the above structure is easy to inject water by the permeable layer 20 configured in the form of a mesh on one side, but the cement particles as fillers are easily lost. The thickness of the product is not uniform because it is crowded with There is a problem in that the quality is deteriorated, and in particular, the overall strength of the product is reduced by the structural layer 40 , and there is a limit in that it is not strong in tensile external force.

In addition, there is a problem in that the size of the pores is not uniform due to the structural layer composition dependent on randomness, which causes a large deviation in the thickness of the final hydrated product, making it relatively difficult to secure uniformity in quality control. Also, the opening size and distribution are not uniform, and this causes the cement in the mat to drift due to the flow, resulting in a large variation in thickness.

Korean Patent Registration No. 1585123 includes a fast-diameter polymer cement 10, a nonwoven fabric 20, a waterproof sheet 30, a grid (GRID) 40, and a fixing means 50 as shown in the accompanying drawing 1c However, the fast-diameter polymer cement 10 is 50-60 wt% of ultra-fine cement, 10-15 wt% of blast furnace slag, 5-10 wt% of calcium carbonate, 5-10 wt% of aluminate fast-growing agent, 1 ~2% by weight, fluidizing agent 1~2% by weight, aggregate 001~20% by weight, and acrylic resin or SBR (Styrene Butadiene Rubber) resin in any one 5 to 10% by weight, the nonwoven fabric 20 is polyester , polypropylene, rayon, nylon, carbon fiber, PVC (Polyvinyl Chloride) fiber, and any one or more selected from the group consisting of acetate, and the waterproof sheet 30 is a liquid waterproofing material, ECB (Ethylene Copolymer Bitumen) Any one or more selected from the group consisting of a sheet, an Ethylene Propylene DieneMonomer (EPDM) sheet, an Ethylene Vinyl Acetate (EVA) sheet, and a High Density Polyethylene (HDPE) sheet is used, and the grid (GRID) 40 is a High Density (HDPE) sheet. Polyethylene) is used, and the fixing means 50 has a structure using polyethylene terephthalate.

The fast-diameter polymer cement-embedded waterproof solidifying mat of the Republic of Korea Patent Registration No. 1585123 has a very low loading efficiency for fixing the dry cement mixed powder layer in the central layer by connecting the upper and lower surfaces with stitched threads, so the flow of dry cement mixed powder is very low. It has the disadvantage of being easily broken by an external force after hardening due to the uneven thickness during deep sea handling and field installation.

1d is a method for manufacturing a concrete carpet composite of the above-mentioned Korean Patent Registration No. 1585123 and the concrete carpet composite manufactured thereby includes a floor layer (1); a concrete mixed powder layer (2) prepared and distributed in advance on the bottom layer (1); a fiber layer (3) covering the mixed powder layer; A structure comprising a connecting fibrous yarn in which fibers from the fibrous layer 3 are connected to the bottom layer 1 by piercing and withdrawing the needle from the outside of the fibrous layer 3 to a depth reaching the bottom layer 1 am.

The above-mentioned Republic of Korea Patent Registration No. 1585123 has a structure very similar to the attached drawing 1c, and the upper and lower surfaces are connected and fixed with stitched threads, and the loading efficiency of fixing the dry cement mixed powder layer in the central layer is very low, so dry cement mixed powder It has the disadvantage of being easily broken by an external force after hardening due to the uneven thickness during handling and site installation due to the high flow of water.

On the other hand, the attached drawing FIG. 1e shows that the fiber-reinforced in-situ hydration concrete mat of Korean Patent Application No. 2016-32357 includes a first nonwoven fabric layer and a second nonwoven fabric layer formed by spreading short fibers to a certain thickness, laminating them, needle punching, and then heating and pressing; a mixed cement layer filled between the first non-woven fabric layer and the second non-woven fabric layer; a fiber-reinforced reinforcing layer embedded in the cement layer; It has a structure formed by bonding the first nonwoven fabric layer and the second nonwoven fabric layer by needle punching.

In the Republic of Korea Patent Application No. 2016-32357, a mesh or grid-type structure is further installed in the center of the laid cement and the first non-woven fabric layer and the second non-woven fabric layer are stitched together by needle punching, which has the effect of increasing the tensile strength. In addition, the upper and lower surfaces are connected and fixed with stitched threads, so the loading efficiency of fixing the dry cement mixed powder layer in the central layer is very low, and the dry cement mixed powder flows excessively. It has the disadvantage of being easily broken.

1f is an in-situ hydration fiber-reinforced concrete mat using the foam mesh of the Republic of Korea Patent Application No. 2017-17637 in the form of a mesh and has an open cell structure with a long hole in the longitudinal direction, the number of pores is 10 to 25 ppi, and the thickness is 5 to 30 mm A woven or non-woven fabric is attached to both sides of a support formed by foaming polyurethane, and the support is filled with cement mixed powder for hydration.

The reason that the cell is formed in a long hole shape is that it is easy to fill the dry cement mixed powder up and down and has the advantage of minimizing the flow from side to side. It has the advantage of not being able to easily escape when the concrete is filled. However, the support formed by foaming polyurethane has a disadvantage in that it is not easy to manufacture, so it is difficult to mass-produce it.

Republic of Korea Patent Publication No. 2011-0117203 Republic of Korea Patent Publication No. 2014-0109869 Korean Patent Registration No. 1585123 Republic of Korea Patent Publication No. 2016-0127324 Korean Patent Application No. 2016-32357 Korean Patent Application No. 2017-17637

The present invention has been devised in view of the above-described problems in the prior art, and the object of the present invention is to install a flexible mat on site and then spray water on the mat to react with the cement mixed layer laminated inside the mat to harden the cement composite material to form a concrete body. In order to make it possible, the storage space for storing concrete is continuously formed by repeating left and right at regular intervals to stabilize the behavior of cement, and also to improve the tensile and breaking strength, etc. It is to provide an on-site hydration concrete mat having a storage space that binds cement that can stably perform performance against the tensile force induced by its own weight and external force even when used as a finishing layer, a liner for stormwater drainage, and a temporary road reinforcement layer.

Another object of the present invention is to minimize the loss of cement in the side part and also to adjust the size of the partition space installed between the spantex fabric and the spantex fabric to have the advantage that the height is constant but the width can be adjusted. To provide an in situ hydrated concrete mat having a storage space that binds cement.

It is an object of the present invention in the field hydration concrete mat, the space through the cement is formed and the upper fabric comprising a yarn having an elastic force; a lower fabric comprising yarns woven at a dense density that cement cannot penetrate and having elasticity; a constraint cell member installed between the upper fabric and the lower fabric and forming a partition space for storing cement by crossing the horizontal support member and the vertical support member; It is achieved by an in-situ hydrated concrete mat having a storage space for binding cement, characterized in that the upper fabric and the lower fabric are joined by a fixed yarn.

It is achieved by an on-site hydration concrete mat having a storage space for binding cement, characterized in that the horizontal support member and the vertical support member are made of a nonwoven fabric or foam having a certain void.

It is achieved by an in-situ hydrated concrete mat having a storage space for binding cement, characterized in that either one of the horizontal support member and the vertical support member has a mixed structure made of a nonwoven fabric or foam having certain pores.

It is achieved by an on-site hydration concrete mat having a storage space for binding cement, characterized in that the horizontal support member and the vertical support member are made of any one of a non-woven fabric or a foam having a certain void.

The horizontal support member and the vertical support member are achieved by an on-site hydration concrete mat having a storage space for binding cement, characterized in that it further comprises a void or through hole connected to an adjacent partition space.

The constraining cell member is formed by aligning the support members in the form of a band in parallel in parallel, and then forming a joint portion by welding or ultrasonic welding at regular intervals, and forming a partition space capable of constraining cement between the joint portions. This is achieved by means of an in situ hydrated concrete mat with a storage space that binds the cement.

As described above, the present invention provides a storage space for storing concrete at regular intervals so that when a flexible mat is installed on site and then water is sprayed on the mat, the cement composite material is hardened to form a concrete body by reacting with the cement mixed layer laminated inside the mat. It is formed continuously left and right to stabilize the behavior of cement, and it also improves tensile and breaking strength to substitute for shotcrete work in tunnels, as a finishing layer for storage tanks, waterways, slopes, etc., liners for rainwater drainage ditches, temporary road reinforcement layers, etc. An object of the present invention is to provide an in-situ hydrated concrete mat having a storage space that binds cement that can stably perform performance against the tensile force induced by its own weight and external force even when used as a

Another object of the present invention is to minimize the loss of cement in the side part and also to adjust the size of the partition space installed between the spantex fabric and the spantex fabric to have the advantage that the height is constant but the width can be adjusted. To provide an in situ hydrated concrete mat having a storage space that binds cement.

1a to 1f are exemplary views showing the structure of a conventional concrete mat.
Figure 2 is an exploded perspective view showing the structure of the present inventors on-site hydration concrete mat.
Figure 3 is a cross-sectional view showing the structure of the present inventors on-site hydration concrete mat.
Figure 4 is a perspective view showing another embodiment of the constraint cell member of the present invention.
Figure 5 is an exemplary view showing the width control of the present inventors on-site hydration concrete mat.

Hereinafter, preferred embodiments of the present invention will be described in detail based on the accompanying drawings.

2 is an exploded perspective view showing the structure of the in-situ hydrated concrete mat of the present invention. According to this, the in-situ hydrated concrete mat 1 having a storage space to bind the cement of the present invention is formed with a space through which the cement (T40) passes, The upper fabric (T10) made of yarns having elastic force and the lower fabric (T20), the upper fabric (T10) and the lower fabric (T10) and the lower fabric (T10), which are woven at a dense density that cannot penetrate cement and include yarns having elastic force ( T20) and the horizontal support member (T31) and the vertical support member (T32) are crossed to form a partition space (T33) for storing the cement (T40) is formed between the constraint cell member (T30) and the upper fabric (T10) And the lower fabric (T20) is a structure combined by a fixed yarn (T50).

The upper fabric (T10) is made of a woven or non-woven fabric and is provided with a space through which the cement (T40) can penetrate. Also, when water is sprayed, the sprayed water can be easily introduced into the lower part.

In addition, the upper fabric (T10) may be used by changing the nitro structure. This is because the knitted fabric is easy to form a space through which water or cement (T40) flows and to adjust the size of the space, and when the upper fabric (T10) is knitted or woven, a yarn having elasticity, such as an elastic yarn, can be used.

On the other hand, the lower fabric (T20) is made of a woven or non-woven fabric and the structure is densely formed so that the cement (T40) cannot penetrate. In addition, when water is sprayed, drainage should not be done well to the lower part. The reason is that the sprayed water must not be discharged to the outside before it reacts with the cement (T40).

The lower fabric (T20) can be used by forming a knitted structure. In this case, the weaving structure must be densely formed to prevent the cement (T40) and water from penetrating, and the lower fabric (T20) is knitted or woven using a knitted fabric. In manufacturing, a yarn having elasticity may be used.

When manufacturing the upper fabric T10 and the lower fabric T20, it is preferable to use elastic yarn for some of the yarns used in the width direction when using a yarn having elastic force for a part of the yarn forming the fabric.

The reason is that when the upper fabric T10 and the lower fabric T20 are connected by a fixed yarn T50 and the cement T40 is filled between the upper fabric T10 and the lower fabric T20, This is because if you pull and stretch it in the width direction, you can get the effect of stretching to a certain width, so when the width is slightly larger than the width of the on-site hydration concrete mat, you can get the advantage of not using other on-site hydration concrete mats.

The constraint cell member (T30) is installed between the upper fabric (T10) and the lower fabric (T20) as shown in the accompanying drawing 3, the horizontal support member (T31) and the vertical support member (T32) crossed by cement It is a structure in which a partition space (T33) for storing (T40) is formed.

In this case, the horizontal support member T31 and the vertical support member T32 have a band-shaped structure and have a structure made of any one of a woven fabric, a non-woven fabric, or a foam having a certain void, and a knitted fabric. On the other hand, it is common that the horizontal support member T31 and the vertical support member T32 have the same structure. It can be used by changing the structure so that it can be mixed and used differently.

4 is a perspective view showing another embodiment of the constraint cell member (T30), after aligning the support members (T32A) made of a band shape in parallel in parallel with a bar or ultrasonic welding at regular intervals to connect the joint (T30A-1) It can be formed and used by forming a partition space (T30A-2) capable of constraining the cement (T40) between the joint portions (T30A-1).

The horizontal support member (T31) and the vertical support member (T32) or support for forming the partition space (T33) (T30A-2) in the constraining cell member (T30) (T30A) having the structure of FIGS. 3 and 4 The member (T32A) can be used by forming a through hole or forming a mesh network,

The reason for forming the non-volume part like the through hole or mesh network is to connect the partition spaces T33 (T30A-2) and the partition spaces T33 (T30A-2) to each other. When the cement (T40) is cured, the restraining cell members (T30) (T30A) perform the same role as the reinforcing bars to increase the strength and also provide the effect of improving the bearing capacity.

The constraint cell member (T30) (T30A) as described above can not adjust the height, but the width of the partition space (T33) (T30A-2) can be adjusted so that the width in the width direction can be finely adjusted. When (T30) (T30A) is installed between the upper fabric (T10) and the lower fabric (T20) and cement (T40) is injected to complete the mat, an elastic yarn is used for each fabric, so the upper fabric (T10) and the lower fabric The fabric 20 is also initially manufactured with a length of L1 as shown in the accompanying drawings, and when the width is increased, the length is changed to L2 when the fabric 20 is pulled in one or both directions. It has the effect of being able to adjust the width of the direction.

As such, the present invention provides a storage space for storing concrete at regular intervals so that when a flexible mat is installed on site and then water is sprayed on the mat, the cement composite material is hardened to form a concrete body by reacting with the cement mixed layer laminated inside the mat. It is formed continuously left and right to stabilize the behavior of cement, and it also improves the tensile and breaking strength to substitute for shotcrete work in tunnels, as a finishing layer for storage tanks, waterways, slopes, etc., liners for storm drains, temporary road reinforcement layers, etc. It can perform stably against the tensile force caused by its own weight and external force even when used as a It is a useful invention that has the advantage of being able to adjust the height, but the width can be adjusted.

1: On-site hydration concrete mat with storage space to bind cement
T10: upper fabric T20: lower fabric
T30, T30A: Confinement cell member connection part: T30A-1
T30A-2, T33: compartment space T31: transverse support member
T32: vertical support member T32A: support member
T40 : Cement T50 : Fixed yarn

Claims (6)

In the field hydration concrete mat,
an upper fabric having a space through which cement passes and comprising yarns having elasticity;
a lower fabric comprising yarns woven at a dense density that cement cannot penetrate and having elasticity;
a constraint cell member installed between the upper fabric and the lower fabric and forming a partition space for storing cement by crossing the horizontal support member and the vertical support member;
An on-site hydration concrete mat having a storage space for binding cement, characterized in that the upper fabric and the lower fabric are joined by a fixed yarn.
The method of claim 1,
In-situ hydration concrete mat having a storage space for binding cement, characterized in that the horizontal support member and the vertical support member are made of a non-woven fabric or foam having a certain void.
The method of claim 1,
An in-situ hydration concrete mat having a storage space for binding cement, characterized in that one of the horizontal support member and the vertical support member has a mixed structure made of a nonwoven fabric or foam having a certain void.
The method of claim 1,
In-situ hydration concrete mat having a storage space for binding cement, characterized in that the horizontal support member and the vertical support member are made of any one of a non-woven fabric or a foam having a certain void.
The method of claim 1,
The constraint cell member is formed by aligning the support members made of a band shape in parallel in parallel, and then forming a joint portion by welding or ultrasonic welding at regular intervals, and forming a partition space capable of restraining cement between the joint portions. In situ hydration concrete mat with storage space to bind cement.
6. The method of claim 1 or 5,
On-site hydration concrete mat having a storage space for binding cement, characterized in that the horizontal support member and the vertical support member, or the support member further comprises a gap or through hole connected to an adjacent partition space.

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