JP2002106179A - Concrete repairing/finishing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete repairing/finishing method which unifies first half of repairing/finishing work conventionally carried out by plasterers and latter half of the same conventionally carried out by painters or spraying workers, simplifies safety management and construction schedule control, reduces number of steps, shortens a construction period, cuts costs, and enables repairing/finishing work of existing painted concrete. SOLUTION: According to the method, preliminary spraying of a first special- purpose finish paint is carried out onto a surface of newly places concrete or the existing painted concrete or mortar to be renovated, and a sprayed portion is smoothly pressed by a trowel immediately after the spraying (at a step 15). Thereafter, finish spraying of a second special-purpose finish paint is carried out in the same manner as the preliminary spraying (at a step 16). Then, a third special-purpose finish paint in an arbitrary color is coated on the second special-purpose finish paint by means of a roller or the trowel, or sprayed on the same by means of a gas compressor, and immediately thereafter, pattern spraying for producing a pattern on a painted portion or a sprayed portion is carried out (at a step 17). These steps of work can be performed by a team of all round skilled workers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing and finishing concrete, and more particularly to a method for repairing and finishing concrete by plastering and painting.

[0002]

2. Description of the Related Art FIG. 2 is a flowchart showing an example of a conventional concrete repair finishing method. As shown in the figure,
Conventionally, first, a plasterer performs a base treatment on concrete that is to be repair-finished on a portion other than the floor, such as a wall, a ceiling, a column, and a beam (step 21). In this base treatment, after filling the wooden concrete with a material such as mortar, a partially large bulge such as a protruding portion or a misaligned portion of a formwork is carefully removed by sanding over the entire surface.

[0003] Next, a water absorption adjusting material is applied to the entire surface of the concrete foundation by means of a brush or the like (step 22). continue,
A base adjustment is performed (step 23). In this ground adjustment, the plasterer fills and repairs a misaligned portion of the formwork, a deep (for example, 5 mm or more) dent portion such as a junka, and a cutout around an outside corner or an inside corner with a mortar material.

[0004] Next, plasterer irons a mortar material or a cement filler material to a thickness of about 1 to 3 mm on the entire surface of the concrete base with a metal iron (step 24), and then uses a metal iron to make a mortar material or a cement filler material. Is applied with a thickness of about 1 to 3 mm (step 2).
5).

After the above-mentioned finish coating, drying takes about 1 to 2 weeks, and then the following work is performed by a painter or a sprayer. That is, after completely removing adhering matter such as mortar droplets and oils and fats on the concrete surface, the surroundings are cured with a vinyl sheet or the like (step 26), and the undercoat is performed using a roller or an airless spray (step 27). After drying, the main material is applied by spraying or using a roller (step 28). After the main material is dried, the upper wall material is finally coated with a colorless finish using an airless spray or a roller to finish the concrete repair finish (step 29).

[0006]

However, in the above-mentioned conventional concrete repair finishing method, the plasterer engages in steps 21 to 25, and then the painter or sprayer performs steps 26 to 29. This is a task between two industries, and there is a problem that safety management and process management are complicated.

There is also a problem that the number of steps is large and the construction period is prolonged, resulting in an increase in cost. Furthermore, in the conventional concrete repairing / finishing method, in the main material coating in step 28, a roller pattern by a roller and a spray pattern by spraying are common, and there is a problem that the design is poor.

On the surface of renovated concrete or mortar or the like of the existing coating, the deteriorated coating film is generally washed with a sander or the like, and then the entire surface is washed with water, and the base is adjusted by spraying or using a roller. It is the current situation that finish coating is applied, and it is not finished after securing a smooth surface like new concrete, it is free due to the uneven pattern of the existing painted surface and the step of partial keren The finished pattern could not be obtained.

[0009] The present invention has been made in view of the above points,
A multi-skilled team, centered on plasterers, can quickly and inexpensively provide high-quality concrete repair work on newly-adjusted concrete or under-painted renovated concrete or mortar surfaces. The purpose is to provide a finishing method.

Still another object of the present invention is to provide a concrete repairing and finishing method capable of providing a free design and further applying a material such as glazing and high weather resistance.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method for preparing a new concrete whose foundation has been adjusted, or a surface of an existing painted renovated concrete or mortar.
A first resin-based finish of any color, such as a synthetic resin emulsion, siliceous or polymer cement, applied with a roller or iron, or sprayed with a pumping machine, and immediately thereafter applied or sprayed. After pressing down with a pressing tool and drying the first exclusive finish coating material, on the first exclusive finish coating material, a synthetic resin emulsion-based, siliceous-based or polymer cement-based, 2. A finishing spraying step in which the exclusive finishing coating material of No. 2 is applied with a roller or a trowel or sprayed by a pumping machine, and immediately after that, a coating or spraying portion is pressed by a pressing tool, and after the second exclusive finishing coating material is dried. , On the second exclusive finishing material
Synthetic resin emulsion system, siliceous system or polymer cement system, applying a third exclusive finishing coating material of any color with a roller or iron, or spraying with a pumping machine, and immediately after that, on the portion applied or sprayed And a pattern blowing step of performing arbitrary patterning.

In the present invention, by using the first to third special finishing coating materials which can also serve as the base adjustment coating material, the repair can be performed in a smaller number of steps than in the past, and further, the coating or the pressure feeding can be performed with a roller or a trowel. By spraying with a machine and pressing the portion that has been painted or sprayed immediately afterward with a holding tool such as a metal iron, it is possible to achieve a work efficiency of about 2 to 4 times. In addition, it is possible to freely design patterns on the uneven surface of the existing concrete, such as renovated concrete or mortar, to ensure a smooth surface like new concrete.

In order to achieve the above object, the present invention provides a patterning process in a pattern blowing step, wherein a convex part presser for pressing only the convex part of the painted third exclusive finishing coating material and a corrugated roller are used. It is characterized in that it is a roller press for applying a pattern, an iron press for applying a pattern by pressing smoothly or randomly with an iron, or a pressing process by a combination of these. According to the present invention, concrete repair finishing can be performed in various designs.

Further, in order to achieve the above object, the present invention is characterized in that the method further comprises, after completion of the pattern blowing step, a recoating step of applying another coating material for polishing or high weather resistance. According to the present invention, by applying another paint having high gloss and high weather resistance, it is possible to perform repair finishing with higher flexibility.

[0015]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a flowchart for explaining an embodiment of the concrete repair finishing method according to the present invention. In this embodiment, all the operations described below are performed by a multi-skilled team centered on plasterers.

First, a base treatment is performed on concrete for repairing and finishing parts other than the floor surface such as walls, beams and columns (step 11). In this base treatment,
After burying concrete in wooden concrete with a material such as mortar, partially bulges such as protruding portions and misaligned portions of the formwork are carefully removed by sanding over the entire surface.

Subsequently, after applying a water-absorbing adjuster to the entire surface of the concrete substrate with a brush or the like (step 12), the substrate is adjusted (step 13). In this groundwork adjustment, plasterer works with deep misalignment of formwork,
A mortar material or a cement filler material (for example, product name “Moltop 20 #” manufactured by Onoda Co., Ltd.)
Or "Moltop 30 #"). Steps 11 to 13 described above are performed in steps 21 to 2 in FIG.
This is the same as the work of the conventional method described in 3.

Next, the following work steps are performed on the surface of the newly-constructed concrete or the deteriorated coating film that has been subjected to the above-described work steps, or the deteriorated coating film is sanded with a sander or the like. Will be implemented.

That is, after the area where the curing is required is covered with a vinyl sheet or the like, the surrounding is cured (step 1).
4) After the surface of the newly-constructed concrete or mortar, etc., whose surface has been adjusted, the surface of the newly-constructed concrete or the deteriorated coating film has been washed with a sander, etc., and the entire surface has been washed with water. The undercoating of a cement-based first dedicated finishing coating material (for example, "Itop" manufactured by Tsuneka Kagaku Kogyo Co., Ltd.) is applied with a roller or an iron, or a pumping machine (for example, Shin Meiwa Co., Ltd.) Spraying with a mortar pump (trade name of "DM Series" manufactured by Toshiba Co., Ltd.), and immediately afterwards, a lower spraying is performed in which the painted or sprayed portion is pressed smoothly by a pressing tool such as a metal iron (Step 15).

As the first exclusive finish coating material, an arbitrary color having an arbitrary pattern in a pattern blowing step in step 17 described later is used (the second and third exclusive finish coating materials described later are also used). Similar).

In this under-spraying operation, three or four plasterers are used by using the first exclusive finishing material as the base adjustment coating material and using a finishing material capable of spraying and ironing. The core multi-skilled engineering team paints the surface of the new concrete to be repaired, or the renovated concrete or mortar of the existing paint with a roller or iron, or sprays it with a pump, and immediately afterwards It is performed by one or two plasterers pressing down with a metal iron.

After the first exclusive finishing material sprayed by the above-mentioned under-blowing operation is dried, a second exclusive finishing material of synthetic resin emulsion type, siliceous type or polymer cement type is subjected to the under-blowing operation. Similarly, a multi-skilled team consisting mainly of three or four plasterers will apply a roller or iron to the surface of new concrete to be repaired, or the surface of existing renovated concrete or mortar, or pump it. Immediately after that, one or two plasterers perform finishing spraying in which the painted or sprayed portion is pressed smoothly by a metal iron (step 16). In the above-described step 15 of the lower-blow operation and the step 16 of the finish-blow operation, only the finish coating material is applied with a roller or a trowel or sprayed with a pressure feeder. Therefore, it can be easily done by a multi-skilled engineering team centered on plasterers.

Finally, pattern blowing is performed (step 1).
7). This pattern blow is applied by a multi-functional team consisting of three to four plasterers using a roller or iron to apply a third exclusive finishing coating material of synthetic resin emulsion type, siliceous type or polymer cement type. This is an operation to obtain various patterns on the surface of new concrete to be repaired, renovated concrete or mortar, which is to be repaired, using a pumping machine.

The pattern can be sprayed with a third exclusive finishing material of any color by spraying with a pumping machine to finish the process, or by pressing with a roller or iron, or pressing immediately after spraying with a pumping machine. There are any patterns by. As the pattern by the latter pressing process, there are a convex pressing pattern for pressing only the convex portion sprayed with the third exclusive finishing coating material, a roller pattern for forming a wavy pattern with a roller, a iron pattern for finishing smoothly or randomly with a iron. , Or a combination thereof. In this way, a repair finish with a free design pattern can be applied to the surface of new concrete or renovated concrete or mortar that has already been painted.

The first, second and third exclusive finishing materials are all synthetic resin emulsion-based, siliceous-based or polymer cement-based materials, but they may all be of the same material. Alternatively, the materials of all the special finish coating materials may be different. The first, second, and third exclusive finish coating materials that are applied or sprayed on the same location are usually all the same color. This is because if the pattern-blown coating material is damaged, if it is different from the color of the finish-blown coating material below, the damaged portion becomes noticeable.

Usually, the concrete repair finishing is completed by the pattern blowing work in step 17 described above. However, if the design requires glazing or unusual colors, or if functionally high weather resistance is desired, the finishing is carried out. After drying the sprayed coating material, the coating material of these desired materials is overcoated. As a coating material for polishing, there is a product name "GP Paint" or the like.

As described above, in the present embodiment, the concrete repair finishing, which has conventionally been performed in nine steps from two types of business from the base treatment to the overcoating, has been changed from the base treatment to the pattern blowing. By using the first to third exclusive finishing coating materials that the team can also use as the base adjustment, it can be performed in seven steps less than before, and furthermore, it is painted with a roller or iron, or sprayed with a pumping machine, By pressing the painted or sprayed portion with a pressing tool such as a metal iron immediately afterwards, it is possible to realize about 2 to 4 times the work efficiency. In addition, even on the surface of renovated concrete or mortar that has already been painted, it is possible to freely design the surface to ensure a smooth surface like new concrete.

In the above embodiment, all the work is described as being performed by a multi-skilled team centered on plasterers, but the present invention is not limited to this. It is also possible to work in a completely new occupation consisting of two workers, one painter and one sprayer. In this case, the painter and sprayer are responsible for curing, spraying with a pump, and roller work, and the plasterer is responsible for ironing and smoothing the iron, making full use of each other's expertise. it can.

[0029]

As described above, according to the present invention,
By using the first to third exclusive finishing materials that can also be used by the multi-skilled engineering team to adjust the groundwork, it is possible to perform concrete repair finishing from groundwork treatment to pattern blowing with a smaller number of processes than before, and moreover, By coating with a trowel or spraying with a pumping machine, and immediately after that, by pressing the painted or sprayed portion with a holding tool such as a metal trowel, the work efficiency of about 2 to 4 times is realized. In addition, the construction period can be shortened and costs can be reduced, and safety management and process management can be simplified.

Further, according to the present invention, by using the first to third exclusive finishing coating materials, repair finishing can be performed not only on newly-constructed concrete, but also on the uneven surface of the existing-painted renovated concrete or mortar. .

Further, according to the present invention, it is possible to perform repair finishing with various designs by using the first to third exclusive finishing coating materials of a desired color. By further including a recoating step of applying another coating material having high weather resistance or high weather resistance, a more flexible repair finish can be achieved.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating an embodiment of the method of the present invention.

FIG. 2 is a flowchart illustrating an example of a conventional method.

[Explanation of symbols]

 11 to 17 Processing steps according to an embodiment of the present invention 21 to 29 Processing steps according to a conventional example

Claims (4)

[Claims] 1. A first exclusive finish of an arbitrary color with a synthetic resin emulsion system, a siliceous system or a polymer cement system on the surface of a new concrete whose base has been adjusted, or a surface of a renovated concrete or mortar having an existing coating. An undercoating step of applying a coating material with a roller or iron, or spraying with a pumping machine, and pressing the applied or sprayed portion with a pressing tool immediately after that, after drying the first exclusive finish coating material, A second exclusive finishing material of an arbitrary color of a synthetic resin emulsion type, siliceous type or polymer cement type is applied to the exclusive finishing material of 1 with a roller or a trowel, or sprayed with a pump, and immediately thereafter. A finishing spraying step of pressing a portion applied or sprayed later by a holding tool, and after drying the second exclusive finishing coating material, on the second exclusive finishing coating material Synthetic resin emulsion system, siliceous system or polymer cement system, applying a third exclusive finishing coating material of any color with a roller or iron, or spraying with a pumping machine, and immediately after that, on the portion applied or sprayed A concrete repairing and finishing method, comprising a pattern blowing step of performing any patterning. 2. The patterning process in the pattern blowing step includes a step of pressing a convex portion of the third exclusive finishing coating material applied, a step of pressing a roller to form a wavy pattern with a roller, and a stepping iron. 2. The concrete repairing and finishing method according to claim 1, wherein the ironing is a pressing operation in which a pattern is pressed at random and a pattern is pressed, or a pressing process is performed by a combination thereof. 3. The method according to claim 1, further comprising, after completion of the pattern blowing step, a recoating step of applying another coating material for glazing or high weather resistance. 4. The first to third exclusive finish coating materials,
3. The method for repairing and finishing concrete according to claim 1, wherein the same color is used.