JP3002736B2 - Surface finishing method for concrete retaining wall - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface finishing method for a concrete retaining wall for finishing a surface of a concrete retaining wall constructed on a slope such as a seawall of a river, a slope of a landslide, or a slope of an embankment.

[0002]

2. Description of the Related Art In general, concrete blocks manufactured in a factory are pasted or stacked on one side of a concrete retaining wall on a slope, or a concrete reinforcing net is placed on the slope, and mortar is sprayed onto the concrete retaining wall. There is one where the layer is cast in place.

[0003]

The surface of the above-mentioned conventional concrete retaining wall has a color peculiar to concrete.
Moreover, it has an artificial landscape, its properties do not change over time, and it is not greened. There was a problem of being damaged over time.

[0004] In view of such a situation, the present invention provides a natural scenery even during construction, and is easy to be covered with moss over time.
It is an object of the present invention to provide a method of forming a concrete retaining wall surface on which algae and underwater microorganisms can propagate in water.

[0005]

SUMMARY OF THE INVENTION In order to solve the conventional problems as described above and to achieve the intended object, the gist of the present invention is to provide an anchor on a surface of a concrete retaining wall constructed on a slope. A concrete reinforcing mesh is attached to the retaining wall surface, and a concrete material obtained by mixing bean gravel with mortar using quick-setting cement is sprayed on the surface of the retaining wall to apply a sprayed concrete layer. A method of finishing the surface of a concrete retaining wall, characterized in that the surface of the concrete retaining wall is partially washed out to give a laminar cross-sectional pattern.

[0006]

According to the method for finishing the surface of a concrete retaining wall of the present invention, by using a concrete material in which bean gravel is mixed with mortar using quick-setting cement, the pebble rebounds during spraying and the surface of the sprayed concrete layer is reduced. Compared to the normal mortar finish surface, it becomes a rougher surface with large irregularities, and due to quick setting, the mortar component sags and solidifies in the state where it has progressed halfway, which will give an appearance similar to the natural stone surface . Further, by washing out the surface, the mortar component on the surface is washed out and the pea gravel floats. By forming an appropriate pattern by this washing out, the appearance of the cross section of the deposited layer can be given. In addition, the degree of unevenness of the surface increases as the washed pea falls off with time.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

As shown in FIG. 1, for example, concrete blocks 1, 1... Are stacked on the front surface of a slope, and anchors 3 are attached to the surface of a concrete block retaining wall A constructed by integrating the concrete blocks 1 with filling concrete 2. ,
3 are projected, and a steel concrete reinforcing net member 4 is stretched while being supported by this. Spacers 5, 5... Having different heights are appropriately inserted under the mesh member 4 to form a shape in which the mesh member 4 is wavy with respect to the surface of the retaining wall.

Next, as shown in FIG. 2, a sprayed concrete layer 6 is applied to the surface of the retaining wall A. This concrete material is obtained by mixing bean gravel (diameter of 10 mm or less) and a coloring material with cement and sand, adding water, and stiffening the mixture. Use quick-setting cement. The sprayed concrete layer 6 is applied to the undulations of the net material 4 and is applied to a thickness such that a substantially uniform covering can be obtained over the entire area, thereby forming a wavy surface.

After the sprayed concrete layer 6 is constructed in this way, fine jet water is partially sprayed to wash out. As a result, as shown in FIG. 3, the washed-out portion 8 exposing a large amount of the pebble 7 is formed into an appropriate shape, and has an appearance similar to a laminated stratum section.

As shown in FIG. 4, the surface of the sprayed concrete layer 6 constructed in this manner has a large amount of sag 9 at a portion where the inclination is steep due to its wavy shape, and the surface is shown in FIG. As described above, the pebbles are struck by the rebound at the time of spraying, so that a large number of recessed portions 10 are formed, and a large number of hemispherical recesses are formed in addition to the rough surface shape by spraying. Further, as shown in FIG. 6, the mortar component on the surface of the washing portion 8 is washed away, so that a large amount of pea gravel is exposed, so that the washing part 8 has a color greatly influenced by the color of the pea gravel 7 to be used.

On the surface of the sprayed concrete layer formed in this way, in addition to the rough surface peculiar to the shotcrete, large and small irregularities due to pea gravel are formed, so that sediment components and water easily accumulate on the surface. On land, moss and grasses are easy to breed. In addition, when constructed on the surface of a submerged revetment, the growth conditions of microorganisms are favorable and algae are more likely to adhere, which promotes natural purification of water quality.

[0013]

As described above, the surface finishing method for a concrete retaining wall according to the present invention has the following effects. You can create a porous surface.

By forming a complicated surface such as a hole or a sag that cannot be removed with a mold, the surface temperature can be suppressed and a habitat of microorganisms can be prepared. You can create textures in the texture.

By mixing bean gravel, many natural tones can be incorporated into a porous surface, and a fine-grained expression can be created even from a distance. You can add dynamic patterns.

It is easy to increase the thickness of one pattern, and a large pattern can be formed. In the case of the on-site spraying method, a completely integrated wall surface can be formed, and a more natural form can be obtained. It is not an imitation of masonry, but rather an object expressed by the stratum and bedrock itself. A variety of patterns can be created.

The pattern itself is free. For example, even if the pattern is repeated, it is impossible to form the exact same pattern, which is suitable for expressing diversity. Surface material that tastes over time.

From the beginning, it is expected that the surface strength will be slightly lowered and weathering will occur over time, so that it can be expected that soiling, weathering, and the attachment of plants such as geological species will gradually give rise to a personality. Landscape renovation of existing parts is possible In the on-site spraying method, it can be applied when the scenery of existing parts that are not good in landscape is rehabilitated. At that time, construction can be performed in a short period of time. Can be adapted to local characteristics.

By adjusting the material, amount, pigment and the like of the aggregate, a texture and a pattern suitable for the land can be set, and each characteristic can be expressed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an example of a net material extending state according to the present invention.

FIG. 2 is a cross-sectional view of an example of a sprayed concrete layer applied state according to the present invention.

FIG. 3 is a front view showing a state after washing out according to the present invention.

FIG. 4 is a cross-sectional view showing a drooping state of a surface after construction according to the present invention.

FIG. 5 is an enlarged sectional view showing a state of a sprayed concrete construction surface according to the present invention.

FIG. 6 is an enlarged sectional view showing a state of a washing section construction surface according to the present invention.

[Explanation of symbols]

 A Concrete retaining wall 1 Concrete block 2 Filling concrete 3 Anchor 4 Concrete reinforcing mesh material 5 Spacer 6 Shotcrete layer 7 Bean gravel 8 Washing out part 9 Drip 10 Recess

Claims (1)

(57) [Claims] 1. A concrete reinforcing net material is attached via an anchor to the surface of a concrete retaining wall constructed on a slope, and a concrete material obtained by mixing bean gravel with mortar using quick-setting cement is provided on the surface of the retaining wall. A method of finishing a surface of a concrete retaining wall, comprising spraying a sprayed concrete layer and then partially washing out the surface of the sprayed concrete layer to apply a lamination cross-sectional pattern.