JPH07315962A - High strength color finishing method for concrete floor - Google Patents

Abstract

(57) [Summary] [Purpose] A high-strength color finish for a concrete floor that meets the durability requirements for the use of floors in food factories, has a beautiful appearance without peeling or color unevenness, and is inexpensive. Provide a construction method. [Structure] A pure acrylic emulsion is sprinkled on the surface of the cast concrete, and is uniformly stirred and kneaded by a leveling tool to form a thick resin mortar layer. Next, a color powder of a cement mortar-based hydraulic inorganic material containing a coloring material is sprinkled and uniformly mixed by a leveling tool. Next, by finishing the surface into a fine plane and curing the vinyl sheet or the like, a desired concrete floor for a food factory which is beautiful and has various durability conditions can be formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for finishing a concrete floor in a place where water, oils and fats and chemicals are likely to be spilled, such as a food factory.
The present invention relates to a high-strength finishing method for concrete floors that can satisfy durability conditions such as oil resistance, chemical resistance, and heat resistance.

[0002]

2. Description of the Related Art Generally, concrete floors in food factories and the like must be finished so as to satisfy durability conditions such as water resistance, heat resistance, oil resistance, chemical resistance, and abrasion resistance for floor applications. More desirably, anti-slip property, load bearing property, easy cleaning,
It is required to have some aesthetics and be extremely inexpensive if possible. That is, the concrete floor is always in a wet state, washed with hot water of 90 [° C.] and steam, spilled meat oil, fried vegetable oil, sodium dichlorite, salt,
This is because sugar, sauce, soy sauce, ethyl alcohol, milk, etc. come into contact with each other, and it is necessary to withstand such conditions under conditions such as operation of a forklift of about 3.5 [ton]. As a finishing method that has been generally used in order to satisfy the durability condition, there is a method of directly finishing the concrete surface after casting with a trowel and performing a ferrocone hard finish when the surface layer is in a dry state. Alternatively, there is a method of rubbing a coloring agent with a soldering iron. Alternatively, there is a method of applying epoxy coating after the concrete is completely hardened. Further, a known technique disclosed in Japanese Patent Laid-Open No. 3-23281 has been adopted. In the above-mentioned "concrete surface curing method" of the known art, a monomer mixture consisting of 1 to 1 part by weight of α, β monoethylenically unsaturated carboxylic acid and the balance acrylic acid ester is emulsion polymerized using a protective colloid. After the concrete emulsion is cast, the copolymer emulsion obtained by (1) is sprinkled on the surface of the concrete before it hardens, and the surface is finished.

[0003]

The conventional finishing method of applying the epoxy coating or the like does not satisfy all the durability conditions described above, and there is a problem that peeling occurs on the finished surface. That is, since the water resistance and the chemical resistance are insufficient, they penetrate into the finishing layer and the adhesion between the concrete surface and the finishing layer becomes insufficient. In addition, since the coating film is thin, scratches are likely to occur, and water may penetrate from that part, or moisture generated from the concrete side of the foundation may be disturbed by the permeation-resistant finishing layer and cause a layer separation between layers. is there. On the other hand, in the case of the above-mentioned known technique, a finishing layer satisfying the durability condition is obtained more than the above-mentioned one, but in the case of this finishing method, the finishing layer of concrete and emulsion is defined and formed, and the finishing layer of emulsion is formed. Is composed of a thin layer (1 [mm] to 2 [mm]), peeling easily occurs between them, and as a result, there is a problem that the above-mentioned durability condition as a floor cannot be satisfied. In addition, the method of simply rubbing the coloring agent with a trowel has a problem that uneven color and white flower phenomenon occur on the surface.

The present invention solves the above problems, and is water resistant, heat resistant, oil resistant, anti-slip, and chemical resistant (sodium dichlorite, sugar, sauce, soy sauce, ethyl alcohol, milk, etc.). Protection against load), load resistance, abrasion resistance, etc., and satisfying the durability conditions for use on the floor, peeling and color unevenness do not occur, stains on the surface are easy to wash, and it has an aesthetic appearance. Moreover, it is an object of the present invention to provide a high-strength color finishing method for a concrete floor, which is inexpensive.

[0005]

In order to achieve the above object, the present invention is a high-strength color finishing method for forming the surface of a concrete floor so as to satisfy the durability conditions related to the purpose of the floor. After pouring concrete and smoothing the surface, sprinkle pure acrylic emulsion on the concrete surface when the surface is not sufficiently drained, and then stir the concrete and pure acrylic emulsion without causing color unevenness. Form a resin mortar layer on the leveling concrete surface, and evenly spread the powder of cement mortar-based hydraulic color inorganic material containing a colorant on the surface, and wait until the powder becomes a wet color And a high-strength color finishing method for a concrete floor in which the resin mortar layer is kneaded and the surface is flattened with a trowel. Further, after the powder is sprinkled and evenly kneaded, the surface is finely finished with fine thread lines by a fine registration mark leveling tool, and then a vinyl sheet is cured when the concrete surface becomes a walkable state. To do.

[0006]

The pure acrylic emulsion mixes uniformly with concrete to form a relatively thick resin mortar layer. Therefore, no trouble due to peeling or water immersion occurs. Further, a color powder is sprinkled thereon, and the mortar is evenly kneaded and mixed in advance to obtain a finished surface having a uniform color tone without uneven color. Pure acrylic emulsion is particularly excellent in chemical resistance, heat resistance, and abrasion resistance, and the color powder also satisfies the above-mentioned durability conditions and can form any colored pattern on the concrete surface in a stable state. Can solve technical problems.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a flow chart for explaining the finishing method of this embodiment, and FIG. 2 is a sectional view showing concrete and a resin mortar layer formed on the surface thereof.

First, the pure acrylic emulsion (referred to as the former) and the cement mortar-based hydraulic color inorganic material (referred to as the latter) used in this embodiment will be described. The former has the appearance of a milky white liquid and has a solid content of 30 ± 2 [%], clay (25 [° C.]) 40 to 120 [cps], pH (25
[° C.]) 7.0 to 8.5, specific gravity 1.03 ± 0.02. When the former is mixed with concrete, the pure acrylic resin and the mortar content in the concrete are mixed to form a resin mortar layer of the polymer cement mortar layer. The water permeability of this layer is about 1/60 that of normal mortar. Further, since the acrylic resin has chemical resistance, this resin mortar layer has excellent durability against chemicals. Also,
This layer is polymer cement mortar so 2
It withstands temperatures of about 00 to 300 degrees for a long period of time. Further, this resin mortar layer has a wear resistance that is three times or more that of ordinary concrete, and hardly wears during running of ordinary tires. Therefore, no dust is generated. On the other hand, the latter is a cement mortar-based inorganic material containing a coloring material such as a pigment, and a mixture of this and concrete is called a product name “color cleat”. This product has abrasion resistance four times or more that of ordinary mortar, is excellent in impact resistance, slip resistance, oil resistance, water resistance, and is nonflammable.

Next, the finishing method of this embodiment will be described with reference to the flow chart of FIG. First, concrete is poured (step 100). The surface of the concrete after pouring is observed and it is observed whether or not there is insufficient drainage (step 101). If the answer is no, it is left and waits until yes (step 102). In the case of yes, a pure acrylic emulsion is sprinkled on the concrete surface (step 103). Using the T-shaped leveling tool 2 shown in FIG. 2, concrete and pure acrylic emulsion are stirred and kneaded (step 104). This is tentatively called "dragonfly leveling". Color unevenness occurs because concrete mortar mixes with pure acrylic emulsion, but stir until there is no color unevenness. Check for color unevenness (step 10
5) In some cases (yes), continue stirring, and in the case of no, stop stirring. Here, as shown in FIG. 2, about 5 [mm]
The resin mortar layer 1 having a thickness of 10 [mm] is formed (step 106). Next, a color powder of a cement mortar-based hydraulic inorganic material containing a coloring material is spread on the surface of the resin mortar layer 1 (step 107). Next, it is observed whether the color powder becomes a wet color (step 108),
If not (in the case of no), leave it as it is (step 1
09), wait for the color to become wet. In the case of yes, the color powder and the resin mortar layer 1 are uniformly kneaded by the leveling tool 2 and stirred (step 110). Next, the surface is flat and finely brush-finished by using a flat iron and a fine-leveling tool (not shown) (step 111). Next, the degree of hardening of the surface is confirmed (step 112), and if the material is not hardened to a walkable state (in the case of no), it is left standing (step 113),
Wait until you are able to walk. If yes, the surface is covered with a vinyl sheet to cure the vinyl sheet (step 114). As described above, the desired high-strength color finished surface is formed on the surface of the concrete, and the process is completed (step 115). Vinyl sheet curing is not always necessary, but by doing this it is possible to form harder, better quality concrete floors with strips. The compressive strength of the above concrete was according to JISA1108, but it showed a high strength of about 1.8 times that of the conventional simple iron finishing. The abrasion resistance test was conducted according to JIS K7204, but the result was about half that of the conventional one.

As described above, it is possible to produce a colored concrete floor having durability conditions relating to the use of the floor of a food factory or the like. The resin mortar layer 1 is a hardened layer and can have a thickness of 5 [mm] to 10 [mm], which is thicker than that of the prior art, due to the buoyancy of the pure acrylic emulsion.

[0011]

According to the present invention, the following remarkable effects are obtained. 1) By uniformly mixing a pure acrylic emulsion and concrete, a hardened layer of a resin mortar layer having an appropriate thickness is formed on the surface of the concrete. The resin mortar layer has high strength and satisfies each of the durability conditions such as load resistance, wear resistance, water resistance, and heat resistance, and can be sufficiently used as a floor in food factories. 2) The resin mortar layer is a uniform mixture of mortar and pure acrylic and does not peel or separate. 3) Since it uses a resin mortar layer, it has oil and grease resistance and chemical resistance. 4) Since the resin mortar layer is formed by stirring until color unevenness does not occur, color concrete having an appearance is formed. That is, since it is strong against acid and alkali, it can be completely washed with various detergents and can be kept clean. 5) Since the color cleat is used, it is possible to form a concrete floor that further improves the durability condition. 6) It is a simple processing method that only repeats spraying and registering marks, is relatively easy to perform, and has a non-slip property due to the fine brush finish.

[Brief description of drawings]

FIG. 1 is a flowchart for explaining a finishing method according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a resin mortar layer formed on the surface of concrete.

[Explanation of symbols]

 1 Resin mortar layer 2 Leveling tool

Claims (2)

[Claims] 1. A high-strength color finishing method for forming the surface of a concrete floor so as to satisfy the durability condition related to the purpose of the floor, which comprises pouring concrete to smooth the surface and then watering the surface. Sprinkle pure acrylic emulsion on the concrete surface when the injury is not enough, stir the concrete and pure acrylic emulsion to a state where color unevenness does not occur, and form a resin mortar layer on the concrete surface, and further color the surface Evenly spread the powder of the cement mortar-based hydraulic color inorganic material containing, wait until the powder becomes a wet color, and knead the powder and the resin mortar layer, and level the surface with a trowel. A high-strength color finishing method for concrete floors. 2. The concrete floor according to claim 1, wherein the powder is sprinkled and uniformly kneaded, fine brush finish is performed, and then vinyl sheet is cured when the concrete surface becomes a walkable state. High strength color finishing method.