JPH0790808A - Concrete repair material and repair construction method using this - Google Patents

Abstract

PURPOSE:To provide an inexpensive concrete reinforcing material excellent in adhesiveness and durability and to facilitate construction work by mixing a vinyl fine particle mixture-to an epoxy resin pavement paint at a specific ratio of part by weight. CONSTITUTION:A curing agent is mixed into an epoxy two-liquid type resin pavement paint having high viscosity as a main ingredient at a ratio of 1:0.5-2.0 parts by weight. Vinyl fine particle mixture composed of vinyl resin, particle, stabilizer. filler, lubricant is charged into this mixture. By sufficient agaitation, a concrete reinforcing material 3 is obtained. On the other side, in a concrete floor 1 a groove 2 is formed, and the inside thereof is sufficiently cleaned and dried. The concrete reinforcing material 3 previously prepared is charged in the groove 2 and a surface thereof is leveled by a construction trowel 4 for flat finishing. At this time, work is conducted while applying xylene solvent to a surface of the trowel 4 in order to improve sliding.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete repairing material for repairing a concrete structure by burying a groove or the like formed in a floor or a wall, and a construction method when using the concrete repairing material. It is about.

[0002]

2. Description of the Related Art In a concrete building or the like, for repairing work such as making holes or grooves in floors or walls for piping such as piping for electricity or water, and then filling back on it flatly Well done. Conventionally, as a concrete repair material used for such repair work, a commercially available concrete repair material made of the same material as concrete has been mainly used because it is inexpensive. In addition, an expensive resin mortar-based concrete repair material is sometimes used.

[0003]

However, in the repair work using the former conventional repair material made of the same material as the conventional concrete, adhesion and durability are poor, and peeling often occurs in about one month after construction. It was Further, the latter resin mortar type having excellent performance as a concrete repair material is not satisfactory because not only the material is expensive but also the workability and workability thereof are difficult.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a concrete repair material excellent in adhesion, durability, workability and price.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a vinyl-based powder admixture is added to an epoxy resin paving paint in a ratio of 0.5 to 0.5.
It is a concrete repair material that is mixed at a ratio of 2.0 parts by weight and used for concrete repair. Further, it is a concrete repair construction method in which a xylene-based solvent is applied to the iron surface in order to improve the slippage of the iron when the above-mentioned concrete repair material is used for the repair.

[0006]

[Function] By filling a vinyl-based powder admixture into an epoxy-based resin pavement material having high viscosity, the viscosity can be appropriately suppressed, and adhesion and durability can be improved.
The price can be reduced. Moreover, in the construction method, by working while applying a xylene-based solvent to the iron surface, a concrete repair material excellent in workability and workability is obtained.

[0007]

EXAMPLES Examples of the concrete repair material of the present invention will be described below. A curing agent is put in a container in a ratio of 1: 0.5 parts by weight to a high-viscosity epoxy two-component resin paving paint as a main component, and this is mixed well. 0.5 to 2.0 parts by weight of vinyl powder compound consisting of vinyl resin, plasticizer, stabilizer, filler, lubricant, etc. is added to this, and this is stirred well to make a concrete repair material. It is a thing. As the plasticizer, dioctyl phthalate,
Tribasic sulfate is used as a stabilizer, calcium carbonate is used as a filler, and barium stearate is used as a lubricant.

The addition of a vinyl-based powder admixture to the epoxy-based two-component type resin paving coating material as the concrete repair material is because the epoxy-based two-component type resin paving coating material has a high viscosity.
This is because the finished repairing agent is still muddy and sticky, resulting in poor workability and workability.

Next, an example of construction using the concrete repair material will be described with reference to the drawings. As shown in FIG. 1 (A), a concrete floor 1 has a width of 100 mm and a length of 100.
A groove 2 having a depth of 0 mm and a depth of 30 mm is formed. And this groove 2
Clean the inside and dry it. This state is shown in FIG. Next, as shown in FIG. 1 (C), the concrete repair material 3 is put into the groove 2, and the surface is leveled with the construction iron 4 to finish it flat as shown in FIG. 1 (D). At this time, the work is performed while applying a xylene-based solvent to the trowel surface of the construction trowel 4 to improve sliding. The finished state of the repair section 5 is shown in FIG.

Next, concrete examples of concrete repair materials will be described. In Examples 1 to 4, two epoxy-based two-component resin paving paints were mixed together, and immediately after that, 0.5 part of the vinyl-based powder admixture was added to 1 part by weight of the epoxy two-component resin paving paint. , 1.0, 1.5, and 2.0 parts by weight, respectively, were added and mixed to obtain a concrete repair material sample. Further, as Comparative Examples 1 and 2, after mixing two liquids of epoxy-based two-pack type resin paving paint in the same manner,
Immediately, 2.5 parts by weight of the vinyl powder mixture was added to 1 part by weight of the epoxy two-component resin paving coating material in a ratio of 2.5 parts by weight and mixed to obtain a concrete repair material sample. Furthermore, as a conventional concrete repair material, Tuffton (commercial name: Denka Manufactured) was used as a reference example.

Examples 1 to 4 and Comparative Example 1,
In order to evaluate No. 2, as shown in FIGS. 1 (A) to 1 (E), the concrete floor 1 has a width of 100 mm and a length of 1000 m.
A groove 2 having a depth of m and a depth of 30 mm is formed, and the concrete repair material samples of Examples 1 to 4 and Comparative Examples 1 to 2 are added to finish, durability, adhesion and workability. Workability was evaluated.

The durability is evaluated by running a reach lift (Nissan: 2060 kg of own weight) on the repair section 5 and determining how many times the repair section 5 is cracked at 20 times / day. Similarly, the adhesion is evaluated by running a reach lift on the repair section 5 and determining how many days the concrete repair material peels from the repair section 5 at 20 times / day.
In the table, ○ indicates that the durability and adhesion are better than those of the reference example, Δ indicates that the durability and adhesion are equivalent to those of the reference example, and x indicates that it is inferior to that of the reference example. is there.

The workability and workability are evaluated based on the standard setup time of 30 minutes. In addition, construction time is groove (10
00 × 100 × 30) was used as a standard for finishing in 2 minutes. Incidentally, in the table, both of the above-mentioned and those in the table are superior to the reference example, those of Δ are inferior to either of the above and the reference example, and x are both inferior to the reference example. The evaluation results are summarized in Table 1.

[0014]

[Table 1]

As shown in Table 1 above, the concrete repair materials of the examples were good in both durability, adhesion and floor slip. This is because the epoxy two-component resin paving paint is liquid and highly viscous, so if the filling amount of the vinyl powder compound is 0.5 parts by weight or less, the finished repair agent will still be muddy and sticky. Workability and workability will deteriorate. Further, when the filling amount of the vinyl-based powder compound is 2.0 parts by weight or more, the durability and adhesion of the concrete repair material are deteriorated,
Moreover, the viscosity is too low, which makes the work difficult.

[0016]

As described above, the concrete repair material of the present invention is superior in durability and adhesion to those of the conventional reference example, and is formed by filling an inexpensive vinyl-based powder admixture. Therefore, the unit price can be reduced. In addition, since it has an appropriate viscosity and is excellent in workability, the construction surface can be easily finished flat and smooth with a construction iron coated with a solvent, xylene-based thinner. Further, even if a repair portion is formed on the floor surface, slip does not occur even if the reach lift travels on the surface, and it becomes an extremely excellent concrete repair material.

[Brief description of drawings]

1A to 1E are explanatory diagrams for explaining a case of evaluating a concrete repair material of the present invention and a construction state.

[Explanation of symbols]

 1 Concrete floor 2 Groove 3 Concrete repair material 4 Construction iron 5 Repair part

Claims (2)

[Claims] 1. A concrete repair material in which a vinyl-based powder admixture is mixed with an epoxy resin paving coating material at a ratio of 0.5 to 2.0 parts by weight. 2. A concrete repair construction method, wherein when the above concrete repair material is used for repair, a xylene-based solvent is applied to the iron surface in order to improve the slip of the iron.