JP2008297761A - Surface structure and surface treatment method for concrete structure of water-utilization facility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surface structure for a concrete structure of water-utilization facilities excellent in abrasion resistance, and a surface treatment method for the concrete structure of the water-utilization facilities for forming the surface structure. <P>SOLUTION: Characteristically, the surface structure 1 for the concrete structure of the water-utilization facilities comprises an abrasion-resistant resin layer 5 which is formed along a surface of a concrete substrate 2, and an anchoring portion 4 which is provided in the state of being fixed to the surface of the concrete substrate 2, so as to anchor the abrasion-resistant resin layer 5 on the concrete substrate 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a surface structure of a concrete structure and a surface treatment method in a water use facility such as a sabo dam.

Concrete structures in irrigation facilities, such as sabo dams and head works, are constantly exposed to intense water currents and large drops of water, and are in an extremely worn environment. For this reason, with the passage of time, the surface may be worn and damaged, which may lead to destruction of the structure body.
Various methods have been tried to solve this problem. For example, a method of placing polymer concrete using a liquid resin as a binder on the surface of a concrete structure, a method of covering the surface of a concrete structure with a rubber protective plate formed with a steel plate as a core, and three layers A method using a wear-resistant plate made of a rubber (see, for example, Patent Document 1) has been proposed.
Japanese Patent Publication No. 8-26581

  However, in the method using the polymer concrete described above, there are problems such as the fact that the surface cannot be constructed on the wet surface and the primer is fixed on the surface of the concrete structure with a primer, so that floating occurs when the surface is fragile. In addition, there are many problems that the polymer concrete is often cracked and expensive. Moreover, although the protection method by the rubber-made protection board of patent document 1 is excellent in abrasion resistance and impact resistance, there exists a problem that it is very expensive.

The present invention has been made in view of the above circumstances, and is intended to form the surface structure of a concrete structure (hereinafter simply referred to as “surface structure”) and the surface structure in a water use facility having excellent wear resistance. It is an object of the present invention to provide a surface treatment method for a concrete structure in a water facility (hereinafter simply referred to as “surface treatment method”).
Another object of the present invention is to provide a surface structure that can be formed at low cost and a surface treatment method for forming the surface structure.

  The surface structure according to the present invention is provided with an abrasion-resistant resin layer formed along the surface of the concrete foundation, and fixed to the surface of the concrete foundation to fix the abrasion-resistant resin layer to the concrete foundation. And a fixing unit.

  The surface structure of the present invention provides a surface structure having excellent wear resistance because the fixing portion is formed by firmly fixing the wear-resistant resin layer having high wear resistance to the concrete base. be able to

  The fixing unit may include a primer layer provided on the surface of the concrete base and a fine aggregate partly embedded in the primer layer and the remaining part embedded in the wear-resistant resin layer.

  The fixing unit may include a steel plate fixed to the surface of the concrete base, and a wire mesh fixed to the steel plate and embedded in the wear-resistant resin layer.

  Furthermore, the fixing unit has a steel plate fixed to the surface of the concrete base, and a fixing structure that protrudes on the steel plate and fixes the wear-resistant resin layer on the steel plate. May be configured. In addition, the fixing structure may be formed by stacking a plurality of strip steel plates having different widths.

  The abrasion-resistant resin layer may be formed containing a polyurethane resin or a polyurea resin. Moreover, the thickness may be 10 mm or more.

  The surface structure of the present invention may further include a surface reinforcing portion that is provided between the surface and the fixing portion, and that suppresses oozing of moisture from the surface of the concrete base.

  The wear-resistant resin layer may be provided with an abrasion degree display member formed by overlapping a plurality of resin layers having different colors.

  The surface structure of the present invention may further include a rod-shaped member having a cross section formed in an inverted T shape and arranged so as to divide the wear-resistant resin layer into a plurality of sections.

  The rod-shaped member may be formed with a core material inside. Moreover, the recessed part may be formed in the surface.

  The surface treatment method according to the present invention includes a step of providing a primer layer on the surface of a concrete base, a step of embedding a part of fine aggregate in the primer layer, and a wear-resistant resin layer on the primer layer. Forming and embedding the remainder of the fine aggregate in the wear-resistant resin layer.

  Further, the surface treatment method according to the present invention includes a step of fixing a steel plate to the surface of a concrete base, a step of fixing a wire mesh on the steel plate, and forming a wear-resistant resin layer on the wire mesh to form the wire mesh. Embedded in the wear-resistant resin layer.

  Forming a fixing portion by providing a protruding fixing structure on a steel plate; fixing the fixing portion to a surface of a concrete base; and forming a wear-resistant resin layer on the fixing portion to fix the fixing portion. And a step of burying the portion in the wear-resistant resin layer.

ADVANTAGE OF THE INVENTION According to this invention, the surface structure of the concrete structure in the water use facility excellent in abrasion resistance can be provided.
In addition, it is possible to provide a surface structure of a concrete structure in a water use facility that can be produced at low cost, does not easily cause problems such as turning over, and can easily be partially repaired.

A first embodiment according to the present invention will be described with reference to FIG.
The surface structure 1 of the concrete structure in the water use facility according to the present embodiment is provided on the surface reinforcing portion 3 formed on the concrete base 2, the fixing portion 4 provided on the surface reinforcing portion 3, and the fixing portion. The wear-resistant resin layer 5 is provided.

  The surface reinforcing portion 3 is made of an epoxy resin and prevents moisture from oozing out from the inside of the concrete base 2. The fixing unit 4 is formed of a primer layer 6 made of resin or the like and a fine aggregate 7. The fine aggregate 7 is made of stone having a height h1 of 5 to 10 mm, preferably 7 to 8 mm. A part of each fine aggregate 7 is embedded in the primer layer 6 and the remainder is the wear-resistant resin layer 5. Buried in

A surface treatment method for forming the surface structure 1 will be described below.
First, an epoxy-based resin is applied to the surface of the concrete substrate 2 and impregnated in the concrete substrate to form the surface reinforcing portion 3. Next, an epoxy primer is applied on the surface reinforcing portion 3 so that the thickness t1 is 2 to 3 mm, and a primer layer 6 is formed (primer layer forming step).

  Subsequently, before the primer layer 6 is solidified, a fine aggregate 7 is spread on the primer layer 6, and a part of each fine aggregate 7 is buried in the primer layer 6 to form the fixing portion 4 (fine aggregate). Burial process). After the primer layer 6 is solidified and the fine aggregate 7 is fixed by the primer layer 6, an ultrafast curing two-component fast-curing polyurethane resin is sprayed thereon to form the wear-resistant resin layer 5 (resistance resistance) Abrasive resin layer forming step).

  The thickness t2 of the wear-resistant resin layer 5 is at least a thickness at which the fine aggregate 7 is completely buried in the wear-resistant resin layer 5, and is 10 mm or more from the viewpoint of ensuring sufficient wear resistance. Preferably, 50 mm or less is desirable from the viewpoint of ease of maintenance and the like. The two-component fast-cure polyurethane resin is cured in about several tens of seconds after spraying, and the surface structure 1 including the abrasion-resistant resin layer 5 made of polyurethane resin is completed.

  According to the surface structure 1 of the present embodiment, since the abrasion-resistant resin layer 5 is formed of a polyurethane resin having an abrasion resistance of 5 times or more that of mortar, the surface structure 1 having excellent abrasion resistance is formed. be able to. In addition, it is superior in cost compared to the conventional surface structure.

  In addition, the fixing unit 4 has a structure in which a part of each fine aggregate 7 is embedded in the primer layer 6 so that the surface on which the wear-resistant resin layer 5 is formed has irregularities. When the conductive resin layer 5 is formed, an anchor effect is generated, the wear-resistant resin layer 5 is strongly bonded to the fixing portion 4, and water does not enter between the concrete base 2. Therefore, peeling of the surface structure 1 due to water intrusion or the like can be prevented. Furthermore, the provision of the surface reinforcing portion 3 can also prevent problems such as swelling of the surface structure 1 caused by moisture oozing from the inside of the concrete to the surface of the concrete base 2 and vaporizing.

  In addition, according to the surface treatment method of the present embodiment, it is possible to omit the process of manufacturing steel plate members and the like in advance in a factory and transporting them to the surface treatment site, thereby improving workability and a short construction period. Surface treatment can be performed with.

  Next, a second embodiment of the present invention will be described with reference to FIGS. The difference between the present embodiment and the first embodiment is the point that a bar-like member is provided and the structure of the fixing unit. In addition, the same code | symbol is attached | subjected to the component similar to 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted.

  FIG. 2 is a plan view showing the minimum unit of the surface structure 11 of the present embodiment. FIG. 2 shows the abrasion-resistant resin layer 5 removed for easy viewing. As shown in FIG. 2, the fixing unit 14 of the present embodiment includes a steel plate 12 and a wire mesh 13 welded on the steel plate 12.

  3 is a cross-sectional view taken along line AA in FIG. The steel plate 12 is a galvanized steel plate, and as shown in FIG. 3, the thickness t3 is set to 3.2 mm. Although steel plates having different thicknesses can be used, from the viewpoint of securing sufficient strength, when using a galvanized steel plate, it is preferable to use a steel plate having t3 of 2.5 mm or more. As shown in FIG. 3, fixing holes 15 are formed in the steel plate 12, and the steel plate 12 is fixed to the concrete base 2 by a fixing member 17 such as a fixing portion reinforcing plate 16 and a chemical anchor.

  The wire mesh 13 is formed by bending a wire having a diameter φ of 3.2 mm so as to have a bottom surface 18 and a convex portion 19 as shown in FIG. 3 to form a 50 mm square lattice as shown in FIG. The protrusions 19 of each wire are welded so as to be orthogonal to each other. Although it is possible to form the wire mesh 13 by using wires with different diameters φ or different sizes of the lattice, the diameter φ is 2.5 mm or more from the viewpoint of securing sufficient strength. The length of one side is preferably 80 mm or less.

Moreover, in the surface structure 11 of this embodiment, the rod-shaped member 20 is arrange | positioned so that each steel plate 12 may be divided | segmented on the surface of the concrete base 2 at arbitrary intervals, and the abrasion-resistant resin layer 5 is formed by the rod-shaped member 20. It is divided into multiple sections.
FIG. 4 is a cross-sectional view of the rod-shaped member 20. The rod-shaped member 20 is formed in a shape in which a central portion 23 protrudes from the horizontal portion 22 so that the cross section becomes an inverted T shape using a steel plate or the like as a core material 21 and a resin such as polyurethane. The height h2 of the central portion 23 is preferably substantially the same as the thickness of the entire surface structure 11 to be formed. Further, a concave portion 24 is formed on the side surface of the central portion 23 over the longitudinal direction of the rod-shaped member 20.

  As shown in FIGS. 2 and 3, the rod-shaped member 20 is fixed to the concrete foundation 2 by stoppers 25 that are provided at the four ends of the steel plate 12 so as to protrude in the horizontal direction at regular intervals. The stopper 25 is formed by welding a strip-shaped steel plate to the steel plate 12 under the welded portion between the convex portions 19 of the wire mesh 13. Therefore, as shown in FIG. 2, each stopper 25 passes under the lattice of the wire mesh 13 and covers a part of the horizontal portion 22, thereby fixing the rod-shaped member 20 to the concrete base 2.

A surface treatment method for forming the surface structure 11 will be described below.
First, the bar-shaped member 20 is installed on the surface of the concrete base 2, and the steel plate 12 is installed so that the stopper 25 fixes the horizontal portion 22 of the bar-shaped member 20. On the fixing hole 15 formed on the steel plate 12, a fixing portion reinforcing plate 16 having a hole of the same size is installed. At this time, as shown in FIG. 2, the fixed portion reinforcing plate 16 has a size that fits within the lattice of the wire mesh 13. The steel plate 12 is fixed to the concrete base 2 from above the fixing portion reinforcing plate 16 using a fixing member 17 such as a chemical anchor (steel plate fixing step).

Next, the bottom face 18 of the wire mesh 13 and the steel plate 12 are welded to fix the wire mesh 13 on the steel plate 12 (wire mesh fixing step). The wire mesh 13 may be welded at the surface treatment site, or may be preliminarily welded at a factory or the like and integrated with the steel plate 12 to be transported and installed at the surface treatment site.
Next, a primer resin is applied onto the wire mesh 13, and then a two-component fast-curing polyurethane is sprayed to approximately the same height as the central portion 23 of the rod-shaped member 20 to form the wear-resistant resin layer 5 (wear resistance). Resin layer forming step). At this time, it is preferable to set the thickness of the abrasion-resistant resin layer 5 so that the wire mesh 13 is completely embedded. When the two-component fast curing polyurethane is dried, the surface structure 11 in which the wear-resistant resin layer 5 is divided into a plurality of sections by the rod-shaped member 20 is completed.

  According to the surface structure 11 of the present embodiment, an anchor effect is generated depending on the shape of the wire mesh 13 of the fixing unit 14, so that the wear-resistant resin layer 5 is securely bonded to the fixing unit 14, and there are problems such as turning over and floating. It can be prevented from occurring. Moreover, since the concrete base 2 is covered with the fixing portion 14 in which the steel plate 12 and the wire mesh 13 are integrated, it is not necessary to form the surface strengthening portion 3 included in the first embodiment, so that the work period and cost can be further reduced. it can.

  In addition, since the wear-resistant resin layer 5 is partitioned in a lattice shape by the rod-shaped member 20, if the wear-resistant resin layer 5 is worn out or has a problem, repair work is necessary. Only the section including the part that needs to be removed can be peeled off with a high-pressure water jet or the like, and partial repair can be easily performed.

  At this time, the water flow of the water jet is interrupted by the steel plate provided as the core member 21 of the rod-like member 20, so that the abrasion-resistant resin layer 5 in the adjacent section is not damaged. Further, since the concave portion 24 provided in the rod-shaped member 20 also has an anchor effect, the wear-resistant resin layer 5 and the rod-shaped member 20 are well bonded, and the rod-shaped member 20 and the wear-resistant resin layer 5 are bonded to each other. Problems such as gaps can be prevented.

Further, in the surface treatment method of the present embodiment, the concrete substrate 2 is wet or fragile because the concrete substrate 2 is covered by the fixing unit 4 in which the steel plate 12 and the wire mesh 13 are integrated. However, the surface treatment can be performed without reducing the fixing power.
Furthermore, since the stopper 25 provided on the steel plate 12 covers and fixes the horizontal portion 22 of the rod-shaped member 20, the rod-shaped member 20 can be reliably prevented from being lifted with a simple structure.

  Next, a third embodiment of the present invention will be described with reference to FIGS. The difference between the surface structure of the present embodiment and the above-described embodiment is the structure of the fixing portion and the point that a wear degree display member is embedded in the wear-resistant resin layer. In addition, the same code | symbol is attached | subjected to the component similar to 1st Embodiment and 2nd Embodiment mentioned above, and the overlapping description is abbreviate | omitted.

  Fig.5 (a) is a top view which shows the minimum unit of the surface structure 31 of this embodiment, FIG.5 (b) is sectional drawing in the BB line of Fig.5 (a). In both figures, the wear-resistant resin layer 5 is removed for easy viewing.

  As shown in FIG. 5B, the fixing portion 32 of the surface structure 31 of the present embodiment includes a first steel plate 33 installed on the concrete base 2 and a fixing structure 34 protruding above the first steel plate 33. And a second steel plate 35 installed on the first steel plate 33.

The 1st steel plate 33 is the same steel plate as what is used for the above-mentioned 2nd Embodiment. The fixing structure 34 is formed by bending an end portion of a second steel plate 35 that is perpendicular to the water flow generated in the water use facility, and a vertical portion 34A that rises substantially vertically upward, and an upper end of the vertical portion 34A is the first steel plate. 33 and an anchor portion 34B folded back substantially in parallel. However, the fixing structure adjacent to the upstream side of the rod-shaped member 20 has a shape that does not have the anchor portion 34 </ b> B so as to be in close contact with the rod-shaped member 20.
Note that the vertical portion 34A may be formed to rise upward with an angle toward the downstream side. In this way, when the fixing structure 34 is exposed, it is difficult for the gravel and the like carried in the water flow to stay.

  As shown in FIG. 5A, the first steel plate 33 is fixed to the concrete base 2 together with the second steel plate 35 by the fixing member 17 similar to the second embodiment. An end portion of the second steel plate 35 parallel to the water flow protrudes to the outside of the first steel plate 33 and covers the horizontal portion 22 of the rod-shaped member 20 disposed between the adjacent fixing portions 32. In this way, the rod-shaped member 20 is fixed so as to partition the fixing unit 32.

  On the anchor portion 34B of the fixing structure 34, as shown in FIG. 5B, a wear degree display member 36 is provided embedded in the wear-resistant resin layer 5. As shown in FIG. 6, the wear degree display member 36 is formed by stacking plate-like resins 36a, 36b, and 36c of different colors of blue, yellow, and red as shown in FIG. It is formed by processing so that the angle formed by the side faces becomes an arbitrary angle of less than 90 degrees. In the present embodiment, the first side surface 37a, the second side surface 37b, the third side surface 37c, and the fourth side surface 37d are processed so as to form 45 degrees, 60 degrees, 60 degrees, and 80 degrees with the bottom surface, respectively. It has a structure that is difficult to come out when embedded in the wearable resin layer 5. The number and color of the plate-shaped resins to be stacked, and the side processing angle can be arbitrarily set.

A surface treatment method for forming the surface structure 31 configured as described above will be described below.
First, the bar-shaped member 20 and the first steel plate 33 are installed on the surface of the concrete base 2. Next, the second steel plate 35 is bent so as to have the vertical portion 34A and the anchor portion 34B, and the fixing structure 34 is provided. After the end parallel to the water flow of the second steel plate 35 is arranged on the first steel plate 33 so as to protrude onto the horizontal portion 22 of the rod-shaped member 20, the first steel plate 33 and the second steel plate 35 are fixed by the fixing member 17. The fixing portion 32 is formed by fixing to the concrete base 2 (fixing portion forming step and fixing portion fixing step).

  At this time, the 2nd steel plate 35 is installed so that the anchor part 34B of the fixing structure 34 may extend toward the downstream direction of a water flow, as shown to Fig.5 (a). The fixing unit 34 may be installed by transporting the first steel plate 33 and the second steel plate 35 previously integrated in the shape as described above to a surface treatment site in a factory or the like.

  Next, after applying a primer resin on the fixing portion 32 in the same manner as in the second embodiment, the wear degree display member 36 is installed on an arbitrary anchor portion 34B of the fixing structure 34. At this time, as shown in FIG. 6, it installs so that the 1st side surface 37a may oppose the water flow which arises in a water use facility.

  Finally, when the two-component fast-curing polyurethane is sprayed and dried so that the abrasion degree display member 36 is completely covered by the same method as in the second embodiment (abrasion resistant resin layer forming step), the fixing unit 32. The wear-resistant resin layer 5 is formed on the surface structure to complete the surface structure 31 of the present embodiment.

According to the surface structure 31 of the present embodiment, the anchoring effect is generated by the fixing structure 34 provided in the fixing unit 32, so that the wear-resistant resin layer 5 is securely bonded to the fixing unit 32, and problems such as turning over are caused. Occurrence can be prevented.
Further, since the anchor portion 34B of the fixing structure 34 is arranged so as to extend toward the downstream side, when the wear-resistant resin layer 5 is worn and the fixing structure 34 is exposed, the anchor portion 34B is carried to the water flow. It is possible to prevent problems such as loose stones hitting the tip of the anchor portion 34B and damaging the remaining wear-resistant resin layer 5, and making it easy to peel off from the fixing portion 32.

Further, since the fixing portion 32 is formed by the first steel plate 33 and the second steel plate 35, the surface structure 31 can be formed by the fixing portion 32 that has a simple structure and can be easily processed.
Furthermore, if a galvanium steel plate is used as the first steel plate 33, a sufficient strength can be secured with a thickness of about 0.8 mm. Therefore, even if the surface of the concrete substrate 2 is a curved surface or a wall surface, the surface along the shape A structure 31 can be formed.

  In addition, since the wear degree display member 36 is embedded in the wear resistant resin layer 5, the degree of wear of the wear resistant resin layer 5 is determined by the color of the wear degree display member 36 and the length of one side of the upper surface. Can be accurately grasped. Therefore, repair work or the like can be performed at a suitable timing.

  In the present embodiment, the example in which the fixing portion is formed from the first steel plate and the bent second steel plate has been described. Instead, the modification shown in FIGS. 7A and 7B is used. Thus, the fixing structure 43 is obtained by stacking and welding the first fixing steel plate (strip steel plate) 41 and the second fixing steel plate (strip steel plate) 42 having different width dimensions so that the cross-section is substantially T-shaped. The fixing unit 44 may be provided by fixing the first steel plate 33 with the fixing member 17.

  According to the above-described modification, since it is not necessary to bend the steel plate when forming the fixing portion, a surface structure that can be easily installed can be configured with a simpler structure.

  Further, a fixing structure may be formed by disposing a member such as a rigid foam between the first steel plate and the second steel plate and bending the second steel plate with the hard foam as a vertical portion. Alternatively, by using a thin steel plate such as a galvanium steel plate as the first steel plate, placing a hard foam or the like between the concrete base and the first steel plate, and bending the first steel plate with the hard foam or the like as a vertical portion, The entire fixing portion having the fixing structure may be integrally formed without using the second steel plate.

While the embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above embodiment, the two-component fast-curing polyurethane is used, and the abrasion-resistant resin layer is formed of the polyurethane resin, but instead of this, it is formed using a polyurea resin having ultra-fast curability. Also good. In the above embodiment, a galvanized steel plate or a galvanium steel plate is used as the steel plate of the fixing portion, but other steel plates can be used as long as sufficient strength can be secured.

It is sectional drawing of the surface structure of the concrete structure in the water use facility of 1st Embodiment of this invention. It is a figure which shows the top view of the surface structure of the concrete structure in the water use facility of 2nd Embodiment of this invention except an abrasion-resistant resin layer. It is sectional drawing in the AA of FIG. It is sectional drawing of the rod-shaped member of the embodiment. (A) is a plan view of the surface structure of the concrete structure in the water use facility according to the third embodiment of the present invention, (b) is a sectional view taken along line BB of (a), and a wear-resistant resin layer, respectively. FIG. It is a figure which shows the abrasion degree display member of the embodiment. (A) is a top view of the surface structure of the modification of 3rd Embodiment, (b) is a figure which shows sectional drawing in CC line of (a), respectively, except an abrasion-resistant resin layer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 11, 31 ... Concrete structure surface structure, 2 ... Concrete base | substrate, 3 ... Surface reinforcement | strengthening part 4, 14, 34, 44 ... Fixing part, 5 ... Abrasion-resistant resin layer, 6 ... Primer layer, 7 ... Fine Aggregate, 12, 33 ... 1st steel plate (steel plate), 13 ... wire mesh, 20 ... rod-shaped member, 21 ... core material, 24 ... recess, 34, 43 ... fixing structure, 39 ... wear level indicating member, 41 ... first Fixing steel plate (strip steel plate), 42 ... Second fixing steel plate (strip steel plate)

Claims (15)

A wear-resistant resin layer formed along the surface of the concrete substrate;
A fixing portion fixed to the surface of the concrete base and fixing the abrasion-resistant resin layer to the concrete base;
A surface structure of a concrete structure in a water use facility, characterized by comprising:   The fixing unit includes a primer layer provided on the surface of the concrete base, and a fine aggregate partly embedded in the primer layer and the remaining part embedded in the wear-resistant resin layer. The surface structure of the concrete structure in the water use facility according to claim 1.   The fixing unit includes a steel plate fixed to the surface of the concrete base, and a wire mesh fixed to the steel plate and embedded in the wear-resistant resin layer. The surface structure of a concrete structure in the water use facility according to 1. The fixing portion is a steel plate fixed to the surface of the concrete base;
The concrete in the water use facility according to claim 1, further comprising a fixing structure that protrudes on the steel plate and fixes the wear-resistant resin layer on the steel plate. The surface structure of the structure.   The surface structure of a concrete structure in a water use facility according to claim 4, wherein the fixing structure is formed by stacking a plurality of strip steel plates having different widths.   The surface structure of a concrete structure in a water use facility according to any one of claims 1 to 5, wherein the wear-resistant resin layer is formed containing a polyurethane resin or a polyurea resin.   The surface structure of a concrete structure in a water use facility according to any one of claims 1 to 6, wherein the wear-resistant resin layer has a thickness of 10 mm or more.   The surface reinforcement part which is provided between the said surface and the said fixing | fixed part, and suppresses the exudation of the water | moisture content from the surface of the said concrete foundation | substrate is further provided, The surface reinforcement part as described in any one of Claim 1 to 7 characterized by the above-mentioned. Surface structure of concrete structures in water use facilities.   9. The wear degree display member formed by overlapping a plurality of resin layers having different colors is embedded in the wear-resistant resin layer, and is provided according to claim 1. Surface structure of concrete structures in the mentioned water use facilities.   The cross section is formed in an inverted T-shape, and further comprises a rod-like member arranged and provided so as to divide the wear-resistant resin layer into a plurality of sections. The surface structure of the concrete structure in the water use facility according to claim 1.   The surface structure of a concrete structure in a water use facility according to claim 10, wherein the rod-shaped member is formed with a core material inside.   The concave structure is formed in the surface of the said rod-shaped member, The surface structure of the concrete structure in the water use facility of Claim 10 or 11 characterized by the above-mentioned. Providing a primer layer on the surface of the concrete substrate;
A step of burying a part of the fine aggregate in the primer layer;
Forming a wear-resistant resin layer on the primer layer and burying the remainder of the fine aggregate in the wear-resistant resin layer;
A surface treatment method for a concrete structure in a water use facility comprising: Fixing the steel plate to the surface of the concrete base;
Fixing a wire mesh on the steel plate;
Forming a wear-resistant resin layer on the wire mesh and embedding the wire mesh in the wear-resistant resin layer;
A surface treatment method for a concrete structure in a water use facility comprising: Forming a fixing portion by providing a protruding fixing structure on a steel plate; and
Fixing the fixing portion on the surface of the concrete base;
Forming a wear-resistant resin layer on the fixing portion and embedding the fixing portion in the wear-resistant resin layer;
A surface treatment method for a concrete structure in a water use facility comprising:

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