CN102828589B - Construction method for making replica of paint on fair-faced concrete surface - Google Patents

Abstract

The invention discloses a construction method for making old paint on the surface of clear water concrete, which comprises the following steps: cleaning the base layer, brushing the first coat of paint, brushing the second coat of paint and brushing a water-repellent agent, according to the above construction method, the color and luster of the new concrete surface Consistent with the original concrete components, it achieves a very good old-fashioned effect.

Description

A construction method for making old paint on the surface of fair-faced concrete

technical field

The invention relates to a construction method for making old paint on the surface of fair-faced concrete.

Background technique

my country is an ancient civilization with a history of more than 5,000 years. Many precious cultural heritages have been completely preserved and passed down through historical screening, such as ancient buildings, murals, paintings, sculptures, cliff carvings, metal and ceramic products, etc. But after years of baptism, these precious cultural relics have been damaged to a certain extent. With the development of science and technology, coatings have also been applied in the protection of cultural relics. Coatings not only have a repairing effect on cultural relics, but also can produce certain decorative effects. The main means of cultural relics protection is to isolate cultural relics from the original corrosive environment. For the protection of cultural relics.

Conventional coatings for the protection and restoration of cultural relics include the following:

1. Raw lacquer (natural lacquer), abbreviated as "earth lacquer", also known as "national lacquer" or "big lacquer". It is a milky white gelatinous liquid harvested from lacquer trees. The surface dries and hardens to produce patent leather. The economic value of raw lacquer is very high. It has the characteristics of corrosion resistance, abrasion resistance, acid resistance, solvent resistance, heat resistance, good water insulation and insulation, and luster. Our ancestors have long used raw lacquer to protect and decorate ancient buildings;

2. Solvent-based resin coatings, the development of polymer synthesis technology provides coatings with better performance for the protection of cultural relics, such as acrylic resin, silicone resin and silicone acrylic resin coatings;

3. The advent of water-based resin coatings and high-performance water-based resin coatings (water-based silicone, organic fluorine resin coatings, etc.) provides a good opportunity for the protection of cultural relics. The coating formed by water-based coatings has better air permeability than solvent-based resin coatings. much more suitable for the protection of stone, pottery and brick cultural relics;

4. Weather-resistant fluorine coatings. In recent years, the development of fluororesin coatings with excellent weather resistance has attracted the attention of coating protection experts. Dalian Zhenbang Fluorine Coatings Co., Ltd. is the first company in China to develop and mass-produce fluororesin coatings, and then developed a two-component water-based fluororesin with excellent performance. After the successful pilot test and trial production, it has been used It entered the market as an exterior wall coating and was well received by users. Considering that the air permeability and environmental protection significance of water-based fluorine coatings are superior to those of solvent-based fluorine coatings, a fluorine-containing resin emulsion coating suitable for cultural relics protection has been developed on the basis of two-component water-based fluorine coatings. This cultural relic protection coating is composed of nano-scale fluororesin emulsion, silica sol and silicon acrylic emulsion. It has excellent properties such as stain resistance, water resistance, acid resistance, good air permeability, and is not easy to foam. It is suitable for cultural relic protection.

The promotion and application of cultural relic protection coatings is much more difficult than ordinary coatings, but with the rapid development of science, more new materials and new coating products will be used in cultural relic protection.

In the maintenance and construction of cultural relics buildings, after the damaged concrete components are repaired with conventional paint, their color and luster are very different from those formed by the original concrete components after many years.

Contents of the invention

In order to achieve the effect of "repairing the old as old" in the perception of cultural relic building maintenance, the invention provides a construction method for making old paint on the surface of fair-faced concrete.

The construction method of the old paint on the surface of the fair-faced concrete comprises the following steps: cleaning the base layer, brushing the first coat of paint, brushing the second coat of paint and brushing the water-repellent agent.

a. Mix and stir the following components according to the ratio of parts by weight to prepare the coating: varnish: putty powder: iron yellow: iron red: iron black: rosin water: thinner is 2:3:1:1:2:6:4;

b. Clean up the base: Clean up the peeling and loose parts on the concrete surface, and make up with cement slurry, shovel off the residual ash, and then sweep the concrete surface;

c. Brush the paint for the first time: the painting sequence is first up and then down. The paint should be stirred evenly before use. After the paint is dry, refill the putty, and then polish it with sandpaper after drying, and clean it;

d. Brush the paint for the second time: the painting requirements are the same as step b. After the paint is dry, use fine sandpaper to polish off the small pimples and brush hairs on the wall, and clean it after smoothing;

e. Brush water-repellent agent: After the paint is dry, brush water-repellent agent together.

After the coating is applied according to the above-mentioned construction method, the surface color of the new concrete is consistent with that of the original concrete components, achieving a very good old-fashioned effect.

Detailed ways

The following ingredients: varnish, putty powder, iron yellow, iron red, iron black, rosin water and thinner are mixed and stirred according to the following parts by weight: varnish: putty powder: iron yellow: iron red: iron black: rosin water: The diluent is 2:3:1:1:2:6:4, and it is stirred with a paint mixing gun. It should be stirred evenly, the consistency should be controlled, and it is ready for use.

Follow the steps below to carry out construction with the above-mentioned prepared paint:

a. Clean up the base: Clean up the peeling and loose parts on the concrete surface, and make up with cement slurry, shovel off the residual ash, and then sweep the concrete surface;

b. Brush the paint for the first time: the brushing sequence is first up and then down. The paint can be used with a brush. When using a new brush, remove the floating hair and loose hair on the brush. The paint should be stirred evenly before use. To prevent the first coat of paint from being blocked, refill the putty after drying, then polish it with sandpaper after drying, and clean it;

c. Apply the second coat of paint: the operation requirements are the same as the first coat. Stir fully before use. If it is not very thick, it is not suitable to add water to prevent the bottom from showing through. After the paint is dry, use fine sandpaper to polish the small bumps on the wall and the brush hair Fall off, clean after grinding;

d. Brushing with water-repellent agent: After the paint is dry, apply a layer of water-repellent agent after brushing to prevent moisture and mildew, so that the paint layer has good color retention and durability.

After the coating is applied according to the above-mentioned construction method, the surface color of the new concrete is consistent with that of the original concrete components, achieving a very good old-fashioned effect.

Claims (1)

1. a construction method for old coating is done on clear-water concrete surface, it is characterized in that, comprises the following steps:

A, by following composition according to parts by weight ratio mix and blend preparation coating: varnish: powder of lacquer putty for use on: iron oxide yellow: iron oxide red: iron oxide black: rosin: thinner is 2: 3: 1: 1: 2: 6: 4;

B, cleaning basic unit: concrete surface peeling and loosening place are removed totally, and mended and smear with cement paste, by clean residual ash shovel, then concrete surface is swept only;

C, brush first pass coating: brushing is sequentially first up and then down, and coating should stir before using, mend again putty after coating is dry, then use coated abrasive working after dry, and cleaning is clean;

D, second time coating of brush: brushing requires with step b, after coating is dry, polish off metope goose pimples and spread pen hair with fine sandpaper, and after wear smooth, cleaning is clean;

E, brush hydrophober: after coating is dry, brush hydrophober together.