JP2003027573A - Joint waterproof film for concrete trough and waterproof execution method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint waterproof film for a concrete trough of a novel structure enabling joint water proofing of a concrete trough connecting part and a water proof execution method for it. SOLUTION: This joint waterproof film for a concrete trough is formed by a soft waterproof thin film layer 2 obtained by mixing inorganic penetrating waterproof coating and special acrylic admixture solution and coating the same, a primer 3 thereon, a soft reinforcing layer 4 obtained by coating hybrid mortar obtained by mixing a main material to which an inorganic binder, aggregate, and an additive are added with an admixture solution composed of an acrylic resin emulsion, water and additive, sticking a mesh 5 made of glass fiber, and coating thick the same hybrid mortar, and a soft surface waterproof layer 6 obtained by coating hybrid mortar as an upper layer.

Description

Detailed Description of the Invention

[0001]

OBJECT OF THE INVENTION The present invention relates to a waterproofing technique which can be used for concrete joints, joints, junkers, cold joints, cracks, etc.
A concrete trough joint with a new structure that can waterproof the joints of the already installed concrete trough connection and does not impair the waterproofness even if the concrete trough moves to some extent due to the deformation of the ground. The present invention aims to provide a waterproof coating for water and a novel waterproofing method for forming the coating.

[0002]

2. Description of the Related Art In Japan, there has been a long history of laying irrigation canals for the purpose of improving agricultural conditions. In modern times, multiple U-shaped concrete troughs were connected as river channels for agriculture. , A mortar or caulking agent is filled between the connection ends to form a ditch that ensures watertightness, so that an efficient and stable supply of agricultural water can be performed. However, since farmland constructed in soil suitable for agricultural products has a relatively weak ground and is easily deformed, concrete troughs that are connected to each other and form a gutter often float or sink to each other,
There is a drawback that cracks occur at the connection part due to the mortar and the caulking agent and water leaks, causing the soil and fertilizer components to be washed away.

In order to eliminate such drawbacks, various connection structures for concrete troughs have been proposed in which in addition to mortar and caulking agent, adhesives made of synthetic resin and organic substances such as synthetic rubber and natural rubber are sandwiched for waterproofing. However, although the waterproof structure using adhesives and natural rubber can obtain high waterproofness at the beginning of construction, it deteriorates in a relatively short period of time due to changes in temperature and exposure to sunlight. As a technique for solving the problem of improving durability and waterproofness, it is difficult to maintain and secure waterproofing performance over a long period of time, for example, as disclosed in Japanese Patent Laid-Open No. 9-31944. Agricultural waterways, etc. in which packing is applied to the gap between concrete troughs and a coating strip made of solventless polyurethane resin paint is formed on the joints, as shown in the official gazette Outgoing, it has been proposed.

According to the present invention, as described above, after the laying from the connection joint portion of the concrete trough forming the gutter, a crack is generated within a relatively short period of time to cause water leakage, and for repair work or new construction. The problem of increasing the cost of the dwelling has been left unattended for a long time, which necessitates a major renovation work each time a leak occurs in the gutter, resulting in high cost and great effort to maintain the irrigation canal. I doubted that I had to spend it, and even if the concrete troughs were displaced due to the ups and downs of the ground due to long-term use, it would not cause cracks in the joints. From the judgment that it is not possible to realize an irrigation canal that can maintain the continuity and watertightness of the concrete trough and prevent water leakage, the development of the irrigation candidly,
As a result of embarking on research, repeating trial and error over a long period of time, and repeating many trials and experiments, this time, finally, we realize a joint trough joint waterproof membrane with a new structure and a new waterproofing method for that. In the following, the configuration will be described in detail with reference to the embodiments representative of the present invention shown in the drawings.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As will be clearly understood from the embodiments representative of the present invention shown in the drawings, the joint waterproof membrane for concrete trough included in the present invention basically has the following constitution. There is. That is, a joint that is formed in advance on the inner wall surface of the gutter of each concrete trough end portion that forms the gutter, or is formed by joining concave connecting stepped portions for connection that are deleted to an appropriate width and depth. A joint joint part that is filled with mortar and / or caulking material in a concave groove for use and is substantially flush with the peripheral wall surface and sufficiently dried and cured, and a width that covers the joint joint part along the entire inner wall surface of the gutter. Application to form a strip of dimensions and length,
A soft waterproof thin film layer formed by mixing an inorganic permeable waterproof coating material formed by drying and a special acrylic admixture at a predetermined ratio,
On the soft waterproof thin film layer, a primer layer applied in a band shape wider than the concrete trough joint part and slightly narrower than the soft waterproof thin film layer, and having substantially the same width as the primer layer, and A fiberglass mesh formed into a tension-like embedded state, a main material with additives such as a retarder and a water reducing agent added to an inorganic binder, an aggregate, an acrylic resin emulsion, water, A soft reinforcing layer made of hybrid mortar mixed with an admixture made of an additive, and a soft surface waterproofing made of hybrid mortar formed by coating each layer up to the soft reinforcing layer in a concealed state. This is a joint waterproof membrane for concrete troughs, which has a structure in which layers are sequentially laminated and integrated.

A concrete waterproofing coating for concrete troughs having this basic structure is shown as a more specific structure. It is either preformed on the inner wall surface of the side groove of each concrete trough end forming the side groove, or The mortar and / or mortar is formed in the joining concave groove formed by joining the connecting concave step portions that are appropriately removed in width and depth.
Alternatively, a joint joint portion that is filled with caulking material, is substantially flush with the peripheral wall surface, and is sufficiently dried and cured, and a strip shape having a width dimension and a length dimension that covers the joint joint portion along the entire inner wall surface of the gutter. A soft waterproof thin film layer formed by mixing an inorganic permeable waterproof coating material and a special acrylic admixture formed by coating and drying so as to have a predetermined ratio, on the soft waterproof thin film layer, rather than a concrete trough joint A band-shaped primer layer that is wide and slightly narrower than the soft waterproof thin film layer, and has a glass fiber mesh that is approximately the same width as the primer layer and is embedded inside in a tension state. About 30-35% of inorganic binder, aggregate 60
Acrylic resin emulsion 85-95 with a main material to which about 1 to 2% of additives such as retarders and water reducing agents are added to about 70%
%, Water 9.5 to 10.5%, additive 0.5 to
A soft reinforcing layer made of hybrid mortar in which the admixture composed of about 1.5% is mixed in a weight ratio of the admixtures 16 to 20 with respect to the main materials 23 to 27, and the soft reinforcement layer on the soft reinforcement layer. It can be said that it is a joint waterproof membrane for a concrete trough in which the soft surface waterproof layer made of hybrid mortar formed by coating and forming each of the above layers so as to be concealed is sequentially laminated and integrated.

The fitting recessed groove has a function of forming a joint joint between the connecting ends of the concrete troughs, and is formed between the connecting ends of the newly installed concrete trough. Which includes the fitting recessed groove filled with mortar and / or caulking material, and the existing concrete trough which is already filled with the mortar and / or caulking material. It also includes those in the state of being reinforced, and in the case where the concave groove for fitting is not previously formed between the connecting ends of the concrete trough, the one that is formed by deleting with a grinder etc. is also targeted. 20-40 mm
It is desirable to form a rectangular, triangular or semi-circular cross section suitable for applying mortar and caulking to a depth of about 20 mm, and a width of about 140 mm and a depth of about 2 mm. It is also possible to adopt a structure in which the inorganic permeable waterproof coating material is troweled and filled as the cutout shape.

The joint joint functions to fill and close the joining recessed groove in a liquid-tight manner and to level the joining recessed groove flush with the peripheral wall surface of the joining trough. The connection between the connection end portions of, to form a basic surface to form a soft waterproof thin film layer, a soft reinforcing layer and a soft surface waterproof layer in a laminated form, mortar or It must be filled with caulking material or an inorganic permeable waterproof coating material to be approximately flush with the surrounding wall surface.

The soft waterproof thin film layer is capable of adhering and supporting the soft reinforcing layer and the soft surface waterproof layer to the joint joint portion, and also has a function of waterproofing, and uses an inorganic permeable waterproof coating material. It is desirable that the inorganic permeable waterproof coating material and the special acrylic admixture are mixed and coated at a specified ratio, and a good coating film can be obtained by spray coating to make a thin film. And
Overcoating multiple times allows the coating film to be more stably fixed.

The primer has a function of fixing the soft reinforcing layer on the soft waterproof thin film layer, and the inorganic permeable waterproof coating material of the soft waterproof thin film layer and the special acrylic admixture are mixed in a predetermined ratio. It is necessary to select a material that stably adheres to both the coating material and the hybrid mortar used for the soft reinforcing layer and that also withstands water penetration.Although it is possible to use a brush, it is possible to use spray coating. It is desirable to finish the film into a thin film.

The soft reinforcing layer reinforces the soft waterproof thin film layer and the soft surface waterproof layer, and has a function of preventing cracks generated at the joints at the ends of the concrete trough from reaching the inner wall surface of the gutter. , Even if the connected concrete troughs are misaligned with each other, the structure must be such that the joint strength can be suppressed and cracks can be prevented, and the connection strength can be secured. It is extremely convenient to sandwich the mesh with flexible hybrid mortar to form a three-layer structure.

The glass fiber mesh is stretched in a tensioned manner on the intermediate layer of the soft reinforcing layer to reinforce the relatively soft soft reinforcing layer in the direction orthogonal to the thickness direction, and in the thickness direction of the soft reinforcing layer. It has the function of flexibly connecting while maintaining a continuous state, and must have sufficient strength to prevent the concrete trough joints from easily shifting or breaking. Instead, it is desirable that the hybrid mortar is formed in a mesh shape, a woven cloth shape, or a non-woven cloth shape that enables a uniform bonding over the entire surface.

The soft surface waterproof layer covers the joint between the concave groove for joining and the joint joint, the soft waterproof thin film layer and the soft reinforcing layer to form a hermetic seal, and has a function of waterproofing without impairing flexibility. Yes, hybrid mortar must be applied, and it should be applied uniformly without uneven coating.

The hybrid mortar has a function of ensuring waterproofness and flexibility by forming a soft reinforcing layer and a soft surface waterproof layer in the form of an adhesive layer having no gaps, and the inorganic binders 30 to 35. % (Preferably 32.9%
Around 60), aggregates 60 to 70% (preferably around 65.9%), and a main material in which additives 1 to 2% (preferably around 1.0%) such as retarders and water reducing agents are added, and acrylic resin. Emulsion 85-95% (desirably around 89.2%), water 9.5-10.5% (desirably around 9.8%), additive 0.5-1.5% (desirably 1.0) %)) As the main material 23-27 (preferably around 25)
On the other hand, a mixture of admixtures 16 to 20 (preferably around 18) should be used, and if the above ratio is exceeded or below, the fixing force of the coating film is It may be weakened or the durability strength of the coating layer itself may be weakened, and sufficient flexibility and waterproofness may not be obtained.

[0015]

[Related invention] Related to the above-mentioned joint waterproof membrane for concrete trough, the present invention also includes a waterproof construction method for forming the waterproof membrane, the basic constitution of which is as follows. belongs to. That is, connecting concave recessed step portions that have been formed in advance on the inner wall surface of the gutter of each concrete trough end portion forming the gutter, or have been appropriately processed to have a width and depth, are joined to form an adjacent concrete trough. A groove for joining is formed between the end portions, and each groove for joining is filled with mortar and / or caulking material to finish the joint joint substantially flush with the peripheral wall surface and sufficiently dry and cure. After removing, remove foreign substances adhering to the vicinity of each joint of the concrete trough, wash with high pressure water, and dry it sufficiently, and then cover the joint of the concrete trough along the entire inner wall of the gutter. Inorganic penetrating waterproof coating material and a special acrylic-based admixture are mixed in a predetermined ratio so as to form a band-like width and length dimension to be hidden, and a soft waterproof thin film layer is formed by coating and dried,
On the soft waterproof thin film layer, a strip-shaped primer that is wider than the concrete trough joint and is slightly narrower than the soft waterproof thin film layer is applied, and the width is made substantially the same as the primer. , A inorganic mortar, an aggregate, a retarder, a main material to which additives such as a water reducing agent are added, and an acrylic resin emulsion, water, and a hybrid mortar prepared by mixing a mixed solution of the additives are applied. By laminating and adhering the glass fiber mesh on the top while tensioning it, and then applying the same thickness of the same hybrid mortar to form a thick coating, a soft reinforcing layer made of the mesh-containing hybrid mortar is formed, and further the upper layer thereof. As a summary, the constitution is such that a soft surface waterproof layer made of hybrid mortar in which each of the layers up to that time is hidden is formed. A waterproofing construction method for joint waterproof film forming concrete trough.

In a more specific structure, the connection recessed portion is formed in advance on the inner wall surface of the side groove of each concrete trough end portion forming the side groove, or is deleted to an appropriate width and depth. The stepped portions are joined to each other to form a joint recess groove between adjacent concrete trough ends, and each joint recess groove is filled with mortar and / or caulking material so as to be substantially flush with the peripheral wall surface. After finishing the joint joint and drying and curing it sufficiently, foreign substances adhering to the vicinity of each concrete trough joint are mechanically removed with a wire brush or grinder, and a high pressure of about 100 to 200 kg per square centimeter. After washing with water and drying it thoroughly, a strip of width and length is used to cover the concrete trough joint joint along the entire inner wall surface of the gutter. In this way, the inorganic water-permeable waterproof coating material and the special acrylic admixture are mixed in a predetermined ratio to form a soft waterproof thin film layer which is applied and dried, and a concrete trough joint joint is formed on the soft waterproof thin film layer. Band-shaped primer which is wider than the soft waterproof thin film layer and slightly narrower than the soft waterproof thin film layer, and is made to have substantially the same width as the primer.
Acrylic resin emulsion 85-95 with a main material to which about 1 to 2% of additives such as retarders and water reducing agents are added to about 70%
%, Water 9.5 to 10.5%, additive 0.5 to
A hybrid mortar obtained by mixing the admixture consisting of about 1.5% with the main material 23 to 27 at a weight ratio of the admixture 16 to about 20 is applied, and a glass fiber mesh is put on the putty. By laminating and sticking while squeezing and tensioning, the same hybrid mortar is made into a thick coating with approximately the same width to form a soft reinforcing layer made of mesh-containing hybrid mortar, and further as an upper layer thereof. It can be said that this is a waterproof construction method for a joint waterproof membrane for a concrete trough, in which a soft surface waterproof layer made of hybrid mortar in which each layer is hidden is formed.

In a more desirable aspect,
Adjacent concrete trough ends are formed by joining concave connecting stepped portions that are either preformed on the inner wall surface of the side of each concrete trough that forms the gutter, or are deleted to an appropriate width and depth. A groove for joining is formed between the grooves, and mortar and / or
Alternatively, after filling with caulking material to finish the joint joint that is approximately flush with the surrounding wall surface, sufficiently dry and cure, foreign matter adhering to the vicinity of each concrete trough joint joint is machined with a wire brush or grinder. Removed and 1
After performing high pressure water washing of about 150 kg per square centimeter and drying it sufficiently, the concrete trough joint part is covered with the entire inner wall surface of the gutter to form a band with width and length dimensions, and inorganic permeability A soft waterproof thin film layer is formed by mixing and applying a waterproof coating material and a special acrylic admixture in a predetermined ratio, and at the same time, the soft waterproof thin film layer is wider and softer than the concrete trough joints on the soft waterproof thin film layer. A band-shaped primer having a width slightly narrower than that of the waterproof thin film layer was applied, and the width was made substantially the same as that of the primer, and the inorganic binder was about 32.9% and the aggregate 65.
Around 9% of the main material with about 1.2% of additives such as retarders and water reducing agents, about 89.2% of acrylic resin emulsion, about 9.8% of water, and about 1.0% of additives. Hybrid mortar, which is obtained by mixing the admixture with the main material approximately 25 in a weight ratio of the admixture approximately 18, is applied, and a glass fiber mesh is putty and ironed to form a strained layer, and the layers are attached. After that, by making the same hybrid mortar into a thick coating with approximately the same width, a soft reinforcing layer made of mesh-containing hybrid mortar is formed, and as a layer above it, each layer up to that point is a concealed hybrid. A soft surface waterproof layer made of mortar is formed, and the total thickness of the soft waterproof thin film layer, the soft reinforcing layer and the soft surface waterproof layer is about 2 mm. A waterproofing construction method for Ritotorafu for joints waterproof coating.

As described above, the fitting recessed groove is formed between the connecting ends of the newly installed concrete trough, and the fitting recessed groove is filled with mortar and / or caulking material. And existing concrete troughs in which the fitting recessed grooves are already filled with mortar and / or caulking material, and the fitting troughs are provided between the connecting ends of the concrete troughs. In the case where the groove is not formed in advance, it also includes those that are formed by deleting with a grinder etc., and foreign matter such as dust and ray dance adhered near the concrete trough joint joint part is wire brush or grinder etc. Mechanically, or 100 to 200 kg per square centimeter, preferably economically with sufficient cleaning power. That 150kg or fully dried and subjected to high-pressure water wash before and after, after working to remove by blowing sand blasting, to fill with a filler suitable for waterproof flush shape.

The soft waterproof thin film layer and the soft surface waterproof layer can be coated by various roller coatings or brush coatings. When the soft reinforcing layer is formed, a trowel brush having a whisker or a flat pad is used. Can be applied efficiently, and when laying the glass fiber mesh when forming the soft reinforcing layer, use a trowel or the like to prevent the glass fiber mesh from becoming tense and loose. It is desirable to finish it so that it is attached while pressing it against the layer surface. In the following, in order to more clearly understand the configuration of the present invention described above, a concrete description of the structure will be given together with an embodiment representative of the present invention shown in the drawings.

[0020]

Example 1 A cross-sectional view of a waterproof coating for a concrete trough joint of FIG. 1, a perspective view of a connecting end portion of a concrete trough of FIG. 2, and a perspective view of a cross-sectional structure of a waterproof coating of a concrete trough joint of FIG. The example is a representative of the waterproofing method for concrete trough joints included in the present invention, which has a basic structure for covering and waterproofing the inner peripheral wall surface joint portion of the U-shaped concrete trough connection portion installed for agricultural water. 1 shows a specific example.

The waterproofing method for the concrete trough joint is made up of a plurality of already installed concrete troughs 1.
Connection concave recessed grooves 11 and 11 formed on the inner peripheral wall surfaces of the connection end portions of the connection members 1 and 2 with a width (w) of 40 mm and a depth of 20 (d) mm. 1
2 is sprayed with high-pressure water to remove the leitance adhering to the surface and then filled with mortar, and if there are cracks, junkers, etc., mortar and caulking are also carried out to form the concave groove 12 for joining. This is an example in which the joint joint portion 13 is formed so as to be flush with the peripheral wall surface of the above, and the agricultural water channel that has been sufficiently dried and hardened is the target of implementation.

The latencies remaining on and around the joint 13 and the dust, moss, etc. adhering to the surface after use and after installation are cleaned with a wire brush to clean the skein of 150 kg / cm 2. Blow them off with a water jet of water pressure to remove them.
After the concrete skeleton was thoroughly dried, the inorganic sealant waterproof coating material, Soloseal (trade name) 60 pounds (2
To 7.2 kg), add 8 liters of acrylic 60 (trade name) 4 times liquid, which is a special acrylic mixture, knead thoroughly until it becomes familiar, and then add an appropriate amount of acrylic 60 (trade name) 4 times liquid. Make a coating material adjusted to an appropriate degree of softness by adding 0 to 1 liter, nozzle diameter 6 mm, blowing pressure 5 per square cm
A width dimension of 45 that covers the joint 13 along the entire inner wall surface of the gutter using a spray gun for building painting of ~ 6 kg.
The soft waterproof thin-film layer 2 is formed by applying multiple coats twice so as to form a strip having a length of about 50 mm.

The soft waterproof thin film layer 2 has a width dimension which is larger than that of the joint portion 13 in the undiluted state of the Sanmor aqueous primer (trade name) as the primer 3 on the soft waterproof thin film layer 2.
Wool roller or flat seal coat is applied and dried sufficiently so as to form a belt shape of about 40 to 45 mm, which is slightly smaller than the above, and 32.9% of the inorganic binder and 65.9% of the aggregate are mixed. Acrylic resin emulsion 89.2%, water 9.8 to the main material which added 1.2% of additives such as retarder and water reducing agent.
%, And an additive of 1.0% are mixed at a weight ratio of the admixture 18 to the main material 25, and the mixture is agitated so as not to cause insufficient admixture or inclusion of air bubbles. Sanmol Y (trade name) as a hybrid mortar produced by adding an appropriate amount of 0.5 liter and adjusting clay, using a wool roller, flat seal bristles, or a flexible gun with a nozzle diameter of about 4 to 5 mm. Paint on the primer 3 so as to have a strip shape having substantially the same width and to cover substantially the entire surface of the primer 3,
On top of that, a fiberglass mesh 5 having a mesh of 2 mm in length and width is stuck in a single or double-layered state in a tension-like manner without sagging, and putty is squeezed. As a pressure-applied state, the soft reinforcing layer 4 is formed by sandwiching the glass fiber mesh 5 with Sanmol Y in a laminated form.

On the soft reinforcing layer 4, the concrete trough joint portion 13, the soft waterproof thin film layer 2 and the soft reinforcing layer 4 are provided.
The soft surface waterproof layer 6 is formed by coating Sanmol Y (trade name) as the hybrid mortar evenly and uniformly over the whole in a band-like range including and without sealing the laminated end cross section. It is assumed that the waterproof film for concrete trough joints formed of the soft waterproof thin film layer 2, the soft reinforcing layer 4 and the soft surface waterproof layer 6 is finished so that the total thickness dimension thereof is suppressed to about 2 mm.

[0025]

The waterproof film for concrete trough joints, which is formed by the waterproofing method for concrete trough joints according to the present invention, having the above-mentioned structure, has a solo seal (which is an inorganic permeable waterproof coating material) on the concrete trough joint joint portion 13 ( (Commercial name) and acrylic 60 (commercial name) as a special acrylic admixture are mixed to coat the soft waterproof thin film layer 2 to ensure the waterproof performance of the base and to strengthen the fragile base. Primer 3 made of Sanmol water-based undercoat material (trade name) applied on the waterproof thin film layer 2
However, the fixing of the soft reinforcing layer 4 is ensured.

Further, the soft reinforcing layer 4 formed in the form of a thick coat through the primer 3 has the adhesiveness and flexibility of Sanmol Y (trade name) which is a hybrid mortar, and has high waterproofness. In addition to ensuring the strength, the glass fiber mesh 5 is wrapped in the middle layer to enhance the strength in the direction orthogonal to the wall thickness direction, and further, the concrete trough joint portion 13, the soft waterproof thin film layer 2 and the soft reinforcement. The soft surface waterproof layer 6 that covers the layer 4 hermetically fixes the outer peripheral edge of the concrete trough 1 so as to reach the side wall of the concrete trough 1 and exposes the entire coating layer including end portions as a concealed state. To prevent permeation and water leakage from the edges of each coating film.

[0027]

[Effect] As described above, according to the waterproofing method for the concrete trough joint of the present invention, the installation of a new concrete trough, the existing concrete trough that is already in use, and the displacement due to the deformation of the ground,
It is also suitable for the connection joints of concrete troughs where cracks have occurred in filled mortar and caulking, and the work can be done quickly using the techniques of painting work and plastering work. Since the waterproof function will be demonstrated within the same day after construction, it is possible to prevent water leakage immediately after the work.In addition, the waterproof performance and durability are improved compared to the waterproof structure by mortar and caulking, and deterioration due to aging is suppressed. The excellent feature is that it can be used for a long period of time.

Further, according to the waterproof coating for concrete trough joints of the present invention, the soft surface waterproof layer covers the joint waterproof coating and the soft reinforcing layer with a smooth coating layer and does not hinder the flow of water in the gutter. In addition to making it flow quickly, it prevents the penetration of water into the joint waterproof film and prevents the joint waterproof film from peeling, breaking, and cracking. Even if the glass fiber mesh laid in a tension state shifts due to the influence of the ground fluctuation between consecutive concrete troughs, the concrete trough is maintained in a continuous state, and soft reinforcement made of soft and flexible hybrid mortar Layer and soft surface waterproof layer prevent the occurrence of cracks,
It is composed of multiple layers consisting of a soft waterproof thin film layer, a soft reinforcement layer and a soft surface waterproof layer, and even if a crack occurs in any one of the layers, it is possible to prevent the development of cracks in adjacent layers. Therefore, it has an excellent effect of being able to secure a remarkably excellent durability as compared with the conventional waterproof coating film.

In particular, the waterproofing method for concrete trough joints described in the embodiments has the characteristics described above, in addition to the inorganic sealable waterproof coating material Solo seal (trade name) and acrylic 60 (trade name) as a special acrylic mixed liquid. The soft waterproof thin film layer 2 is formed by a coating material obtained by mixing) and a predetermined ratio, and it is possible to prevent water that has permeated from the outside through the joint joint portion 13 from permeating into the inner side of the gutter, By mounting the soft reinforcing layer 4 on the soft waterproof thin film layer 2 via the primer 3 in a laminated manner, there is an advantage that the fixing of the soft reinforcing layer 4 can be strengthened.

Further, in the hybrid mortar layer having the flexibility and adhesiveness of the soft reinforcing layer 4, the tensioned glass fiber mesh 5 is embedded and integrated, and the concrete trough is provided. It is possible to realize a joint structure in which the connection strength between the 1 and 1 is increased, and even if the concrete trough 1 causes some deviation, it prevents the situation where cracks are easily generated. Therefore, it is possible to expect an excellent effect of preventing water leakage due to the cracks as much as possible.

As described above, the joint waterproof membrane for concrete trough of the present invention and the waterproof construction method therefor are as follows:
The new configuration makes it possible to achieve the intended purpose evenly, and because the existing painting technology and plastering technology can be used for construction and work efficiency can be greatly increased, it is possible to reduce costs and construction time. It is possible to reliably achieve shortening, and it is extremely effective not only for newly laid concrete troughs, but also for a large number of concrete troughs whose joints have already deteriorated and are connected and laid. Since it will be possible, the durable life of the irrigation canal can be extended, and it will be far more economical than the conventional large-scale repair work. Not only farmers who have been forced to bear part of the cost for completeness and maintenance, but also national and local governments that have to devote a large amount of money to maintenance and management of public facilities, In its is highly regarded by the people to bear it, use over a wide range, it is expected to be those that continue to spread.

[Brief description of drawings]

The drawings show typical examples embodying the technical idea of a joint waterproofing coating for concrete troughs and a waterproofing method therefor according to the present invention.

FIG. 1 is a cross-sectional view showing a laminated structure of a waterproof coating for a concrete trough joint.

FIG. 2 is a perspective view showing a connection structure of a concrete trough.

FIG. 3 is a perspective view showing a laminated structure of a waterproof coating for a concrete trough joint.

[Explanation of symbols]

1 concrete trough 11 Recessed stepped portion for connection 12 Concave groove for joining 13 Same joint area 2 Soft waterproof thin film layer 3 primer 4 Soft reinforcement layer 5 Fiberglass mesh 6 Soft surface waterproof layer

Claims (5)

[Claims] 1. A connection recessed stepped portion which is formed in advance on the inner wall surface of the side groove of each concrete trough end portion forming the side groove, or which has been subjected to an appropriate width and depth deletion treatment. The joint recesses for filling are filled with mortar and / or caulking material, and are sufficiently dried and cured to be substantially flush with the peripheral wall surface, and the joint joint part is formed along the entire inner wall surface of the gutter. A soft waterproof thin film layer formed by mixing an inorganic penetrating waterproof coating material formed by coating and drying in a band shape having a width dimension and a length dimension to be covered with a special acrylic admixture at a predetermined ratio, and the soft waterproof thin film. On the layer, a primer layer that is applied in a band shape that is wider than the concrete trough joint and slightly narrower than the soft waterproof thin film layer, has the same width as the primer layer, and has glass fiber inside. -Inorganic binders, aggregates, and retarders, which are formed by tensioning a mesh made of tension,
A soft reinforcing layer made of a hybrid mortar obtained by mixing a main material to which an additive such as a water reducing agent is added, an acrylic resin emulsion, water, and a mixture liquid made of the additive, and the soft reinforcing layer up to that time. A joint waterproofing film for a concrete trough, characterized in that a soft surface waterproofing layer made of hybrid mortar formed by coating and forming each layer in a concealing manner is successively laminated and integrated. 2. A connection recessed stepped portion that has been formed in advance on the inner wall surface of the side groove of each concrete trough forming the side groove or that has been appropriately removed to have a width and depth. The joint recesses for filling are filled with mortar and / or caulking material, and are sufficiently dried and cured to be substantially flush with the peripheral wall surface, and the joint joint part is formed along the entire inner wall surface of the gutter. A soft waterproof thin film layer formed by mixing an inorganic penetrating waterproof coating material formed by coating and drying in a band shape having a width dimension and a length dimension to be covered with a special acrylic admixture at a predetermined ratio, and the soft waterproof thin film. On the layer, a primer layer that is applied in a band shape that is wider than the concrete trough joint and slightly narrower than the soft waterproof thin film layer, has the same width as the primer layer, and has glass fiber inside. -Around 30-35% of inorganic binder, which is formed by tensioning the mesh made of tension,
Additives such as retarder and water reducing agent 1 to 60-70% of aggregate 1
Acrylic resin emulsion 8 with the main material added about 2%
5 to 95%, water 9.5 to 10.5%, and an admixture consisting of additives 0.5 to 1.5% as the main material 23 to
A soft reinforcing layer made of hybrid mortar mixed in a weight ratio of about 16 to 20 admixture with respect to about 27, and a hybrid mortar formed by coating each layer up to that point on the soft reinforcing layer in a concealed state. A joint waterproof membrane for concrete troughs, which is formed by sequentially laminating and integrating a soft surface waterproof layer consisting of. 3. A connecting recessed stepped portion which is formed in advance on the inner wall surface of the gutter of each concrete trough end portion forming the gutter, or is deleted to have an appropriate width and depth is joined to each other. Forming a concave groove for joining between the ends of the concrete trough, and filling each joint concave groove with mortar and / or caulking material to finish the joint joint approximately flush with the peripheral wall surface. After drying and curing, remove the foreign substances adhering to the vicinity of each joint of the concrete trough, and wash it with high pressure water before thoroughly drying it. The inorganic waterproof coating material and the special acrylic admixture are mixed in a predetermined ratio so as to form a strip of width and length along which the soft waterproof thin film layer is formed and dried. In addition, a strip-shaped primer that is wider than the concrete trough joints and slightly narrower than the soft waterproof thin-film layer is applied on the soft waterproof thin-film layer so that the width is substantially the same as the primer. Then, a hybrid mortar prepared by mixing a main material obtained by adding additives such as a retarder and a water reducing agent to an inorganic binder, an aggregate, and an acrylic resin emulsion, water, and a mixed solution of the additives is applied. , A glass fiber mesh is laminated on the mesh while being tensioned, and then the hybrid mortar is applied in a thick coating with approximately the same width to form a soft reinforcing layer made of the mesh-containing hybrid mortar. A soft surface waterproof layer made of hybrid mortar in which each layer up to that time is made to be a concealed layer is formed as an upper layer thereof, Or waterproofing construction method for a concrete trough for joints waterproof coating according to any one. 4. The connecting recessed step portions which are formed beforehand on the inner wall surface of the gutter of each concrete trough end portion forming the gutter, or which have been appropriately processed to have a width and a depth, are joined to each other and are adjacent to each other. Forming a concave groove for joining between the ends of the concrete trough, and filling each joint concave groove with mortar and / or caulking material to finish the joint joint approximately flush with the peripheral wall surface. After drying and curing, foreign substances adhering to the vicinity of each joint of the concrete troughs are mechanically removed with a wire brush or grinder, and 100 to 200k per 1 square centimeter.
g Before and after high-pressure water washing and sufficient drying, a concrete trough joint joint is covered with an inorganic permeation waterproof coating so as to form a strip of width and length that covers the entire inner wall surface of the gutter. Material and a special acrylic admixture are mixed and applied at a predetermined ratio to form a soft waterproof thin film layer, which is dried, and on the soft waterproof thin film layer, the soft waterproof thin film is wider than the concrete trough joints. A band-shaped primer that is slightly narrower than the layer is applied, and the width of the primer is made substantially the same as that of the primer.
Around 35%, 60-70% aggregate, and a main material with about 1-2% of additives such as retarder and water reducing agent, acrylic resin emulsion about 85-95%, water 9.5-10.5 %, And an admixture consisting of about 0.5 to 1.5% of an additive,
A hybrid mortar formed by mixing the main material 23 to 27 and the admixture 16 to 20 in a weight ratio is applied.
A soft reinforcing layer made of hybrid mortar with mesh is formed by laminating and adhering a glass fiber mesh on it with a putty and tensioning it, and then applying the same hybrid mortar in a thick coating with approximately the same width. 3. A joint waterproof membrane for a concrete trough according to claim 1, further comprising a soft surface waterproof layer made of hybrid mortar as an upper layer of the mortar so as to conceal each layer. Waterproof construction method for. 5. Recessed connecting stepped portions which are formed beforehand on the inner wall surface of the side groove of each concrete trough forming the side groove, or which have been appropriately processed to have a width and depth are joined to each other. Forming a concave groove for joining between the ends of the concrete trough, and filling each joint concave groove with mortar and / or caulking material to finish the joint joint approximately flush with the peripheral wall surface. After drying and curing, foreign substances adhering to the vicinity of each joint portion of the concrete trough were mechanically removed with a wire brush, grinder, etc., and high pressure water washing of about 150 kg per 1 cm 2 was applied to sufficiently dry it. Specially made of inorganic permeable waterproof coating material by forming a strip of width and length that covers the concrete trough joints along the entire inner wall of the gutter. Acrylic admixture is mixed at a predetermined ratio, applied to form a soft waterproof thin film layer, dried and
On the soft waterproof thin film layer, a strip-shaped primer that is wider than the concrete trough joint and is slightly narrower than the soft waterproof thin film layer is applied, and the width is made substantially the same as the primer. , Inorganic binder about 32.9%, aggregate about 65.9%, main agent with about 1.2% of additives such as retarder and water reducing agent, acrylic resin emulsion about 89.2%, water 9 Approximately 18% of the admixture with approximately 25% of the main material, and approximately 18%
Apply a hybrid mortar mixed in a weight ratio of, and put a glass fiber mesh on it with a putty to create a tension-like layering and sticking, then make the hybrid mortar into a thick coating with approximately the same width In this way, a soft reinforcing layer made of hybrid mortar containing mesh is formed, and a soft surface waterproof layer made of hybrid mortar is formed as an upper layer on top of that to form a soft surface waterproof layer made of hybrid mortar, and these soft waterproof thin films are formed. The total thickness of the layer, the soft reinforcing layer, and the soft surface waterproof layer is set to be about 2 mm, 3.
A waterproof construction method for a joint waterproof membrane for a concrete trough according to any one of the above.