CN108222532A - A kind of method for cleaning being used for the granitic plaster alien invasion of historical building - Google Patents

Abstract

The invention provides a method for cleaning the façades of the historical buildings, comprising the following steps: S1, selecting the façades of the façades with a stucco layer; S2, painting the outermost layer in S1 layer to be knocked, and make the plaster layer loose; S3, flush the loosened plaster layer in S2 through the spraying device; S4, judge whether there is a next plaster layer after cleaning the outermost plaster layer, and if so, carry out S5, if not then finish the cleaning of the façade of the water-painted stone; S5, detect the pH value of the next layer of the painted layer that has been cleaned; S6, adjust the pH value in S5, and make the next layer The pH of the first layer of paint is neutral; S7, after the next layer of paint in S6 is dry, repeat S2-S6 until all the paint layers are cleaned, and the cleaning of the façade of the waterwashed stone is completed. The method for cleaning the water-brushed stone facades of historical buildings provided by the invention can make the historical buildings have better appreciation.

Description

A cleaning method for the waterwashed stone facade of historic buildings

technical field

The invention belongs to the field of architecture and relates to a method for cleaning the water-brushed stone facades of historical buildings.

Background technique

Some historical buildings use water-brushed stone as the facade of water-brushed stone, which makes the building have a certain aesthetic feeling and unique style.

In the process of maintaining historical buildings, repairs are usually made on the façade of the water-brushed stone, that is, painting or stone-like spraying on the façade of the water-brushed stone. After more repairs, the water of the historical building will be reduced. The painted stone façade is covered by several layers of whitewash. Although this can restore the structure of the painted stone façade, it reduces the ornamental value of the historical building.

Contents of the invention

The purpose of the present invention is to provide a method for cleaning the stone facade of historical buildings, aiming to solve the problem that the stone facade is covered with several layers of plaster and reduce the ornamental value of historical buildings.

In order to solve the problems of the technologies described above, the invention provides a method for cleaning the water-brushed stone facades of historic buildings, comprising the following steps:

S1, choose the façade of water-brushed stone with a stucco layer;

S2, knocking the outermost plastering layer in S1, and loosening the plastering layer;

S3, flushing the loosened plaster layer in S2 through the spraying device;

S4, judging whether there is a next layer of plastering layer after the cleaning of the outermost plastering layer, if so, then proceed to S5, if not, complete the cleaning of the façade of the water-painted stone;

S5, detecting the pH value of the next layer of the cleaned paint layer;

S6, adjusting the pH value in S5, and making the pH of the next layer of painting layer neutral;

S7, after the next layer of plastering layer in S6 is dry, repeat S2-S6 until all the plastering layers are cleaned, and the cleaning of the façade of the water-brushed stone is completed.

The present invention is further set to, after the knocking in S2 is completed, it is judged whether all the plaster layers are knocked into a loose state, if so, proceed to S3, if not, use a steam device to steam heat the parts that cannot be loosened, Until the part is loose, then proceed to S3.

The present invention is further configured to use a steam device to perform steam heat treatment on the parts that cannot be knocked and loosened, and then use manual cleaning to clean the parts of the plaster layer that cannot be knocked and loosened.

The present invention is further configured that one or more of bamboo chips, steel chips or iron wires are used for the manual cleaning.

5. according to claim 3 or 4, a kind of cleaning method for the water brushed stone facade of historical buildings is characterized in that, the part that adopts manual cleaning also can't clean up is smeared with paint remover paste, after paint stripping After the paste is applied for a set time, the paint remover paste is removed, thereby removing the whitewash layer that cannot be cleaned by hand.

The present invention is further set to, after the paint stripping paste is applied, cover the anti-permeation film on the side of the paint stripping paste facing away from the façade of the water-brushed stone, and make the anti-penetration film completely cover the paint-removing paste on the façade of the water-brushed stone superior.

In the present invention, it is further set that the time for the anti-penetration film to cover the paint stripping paste is 8h-12h.

The present invention is further configured to judge whether there is rust on the stucco layer in S2, and if so, cover the place with rust with one of seaweed mud or white paper pulp for removing rust.

The present invention is further provided that the water pressure for flushing in S3 is adjustable.

Compared with the prior art, the present invention provides a method for cleaning the water-painted stone facades of historical buildings. The outermost layer of plaster is loosened by knocking, and then the loosened plaster is knocked by impact. The first layer is removed from the façade of the water brushed stone; and when cleaning the outermost layer of the inner stucco layer, first adjust its pH to neutral, and then knock and wash away, thus preventing the stucco The acidity and alkalinity of the layer acts on the façade of the water-brushed stone during the scouring process, and causes damage to the façade of the water-brushed stone. It plays a protective role, so when several layers of plaster are removed, not only can the façade of the water-painted stone be restored, but also protect the façade of the water-painted stone, ensuring the preservation of the historical building to the greatest extent. Appreciation; after the paint layer is removed, even if a new paint layer is painted according to actual needs, since the original layers of paint layers have been cleaned up, the ornamental value of historical buildings can also be improved to a certain extent .

Description of drawings

Fig. 1 is a flow chart of a method for cleaning the water-brushed stone facades of historical buildings according to an embodiment of the present invention.

Detailed ways

A method for cleaning the water-brushed stone facades of historical buildings proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. The same or similar reference numerals in the drawings represent the same or similar components.

A method for cleaning the water-painted stone facades of historic buildings, as shown in Figure 1, comprises the following steps:

S1, choose the façade of water-brushed stone with a stucco layer;

S2, knocking the outermost plastering layer in S1, and loosening the plastering layer;

S3, flushing the loosened plaster layer in S2 through the spraying device;

S4, judging whether there is a next layer of plastering layer after the cleaning of the outermost plastering layer, if so, then proceed to S5, if not, complete the cleaning of the façade of the water-painted stone;

S5, detecting the pH value of the next layer of the cleaned paint layer;

S6, adjusting the pH value in S5, and making the pH of the next layer of painting layer neutral;

S7, after the next layer of plastering layer in S6 is dry, repeat S2-S6 until all the plastering layers are cleaned, and the cleaning of the façade of the water-brushed stone is completed.

Wherein, after the knocking in S2 is completed, it is judged whether all the plaster layers are knocked into a loose state, if so, proceed to S3, if not, use a steam device to steam heat the part that cannot be loosened until the part becomes loose , and then proceed to S3. After using a steam device to steam heat the parts that cannot be tapped and loosened, use manual cleaning to clean the parts of the plaster layer that cannot be tapped and loosened. One or more of bamboo flakes, steel flakes or iron wires are used for the manual cleaning, preferably steel flakes in this embodiment.

Apply paint stripping paste to the parts that cannot be cleaned by manual cleaning, and remove the paint stripping paste after applying the paint stripping paste for a set time, so as to remove the whitewash layer that cannot be cleaned by hand. After smearing the paint stripping paste, cover the anti-penetration film on the side of the paint stripping paste facing away from the façade of the water-brushed stone, and make the anti-penetration film fully cover the paint-removing paste on the façade of the water-brushed stone. The time for the film to cover the paint stripping paste is 8h-12h, preferably 10h in this embodiment.

Determine whether there is rust on the painting layer in S2, and if there is rust, cover one of seaweed mud or white paper pulp on the place with rust to remove rust, and seaweed mud is preferred in this embodiment.

The water pressure for flushing in S3 is adjustable, and is used for flushing different plaster layers.

In summary, a kind of cleaning method that the present invention is used for the water-painted stone facade of historic building, when cleaning, at first be to knock the outermost layer of plastering layer by tools such as hammer, And make the outermost paint layer loose, after loosening, the loosened paint layer is washed by spraying device, wherein the spraying device can be a common water gun, and the spray impact force of the water gun can be adjusted simultaneously, so that it can better It can spray the paint layers of various heights and the paint layers of various bonding firmness. After the washing of the outermost plastering layer is completed, detect the acidity and alkalinity of the second plastering layer, and adjust the pH of the plastering layer according to the detected data, so that the pH value of this plastering layer is detected as close to neutral by pH test paper , and then wait for the layer of whitewash to dry, then perform a second knock, and then rinse after the knock is completed, and so on until all the whitewash is cleaned up, and the cleaning of the water-washed stone facade is completed.

Among them, using the method of layer-by-layer removal can be carried out more easily and reduce the difficulty of operation. At the same time, because only the outermost paint layer needs to be removed, the inner paint layer can also exert a certain force on the outermost paint layer. Bearing and dispersion, thereby reducing the adverse effects of external knocking tools on the façade of the water-painted stone, and the protection effect on the surface of the water-painted stone is better. At the same time, by adjusting the pH of the stucco layer to neutral, even if the water body contains a certain amount of stucco layer substances during the flushing process, it can better prevent this part of the water body from corroding or damaging the façade of the stucco stone. , it has a better protective effect on the façade of water-brushed stone.

When the bonding fastness of some plaster layers is too high, firstly, before flushing, high-temperature steam can be generated by the steam device to act on the plaster layers on the firmly bonded parts. The high-temperature steam can not only have a higher temperature, This makes it easy to separate the stucco layer, and at the same time, after the high-temperature steam of the steam device is pre-cooled and liquefied, the liquefied liquid acts on the stucco layer and soaks the stucco layer, so that the removal effect of the stucco layer can be better; infuriating After the device treatment is completed, manually hang and remove the firmly bonded parts of the stucco layer through the steel sheet, so that some firmly bonded stucco layers can be removed; if there are still some that cannot be removed by manual removal, then Cover the paint-removing paste on the stucco layer. After the paint-removing paste is applied, cover the anti-penetration film on the facade of the water brush stone, wherein the anti-penetration film can be an ordinary plastic film, and the paint-removing paste is sealed in the On the façade of the water brush stone, and keep it for 10 hours, so that the paint stripping paste and the painting layer can fully interact; the anti-permeable film prevents the outside world from acting on the paint stripping paste, so that the paint stripping paste can work better To the stucco layer, so through the full action between the paint remover paste and the stucco layer, the stucco layer will be separated from the façade of the water-brushed stone.

When there are microorganisms (such as moss and mold spots) on the paint layer, the local paint layer with microorganisms should be treated with low-toxic and environmentally friendly agents such as fungicides. For the parts that have rust and cannot be removed, use the mud application method, and apply one of seaweed mud or white paper pulp to the parts that need to be cleaned. In this embodiment, seaweed mud is preferred, and the parts that need to be cleaned are adsorbed and ionized. Exchange cleaning. According to the degree of rust, seaweed mud and water can be mixed at 1:1 or 1:2 or 1:3 for operation, or the seaweed mud can be sealed and attached to the wall for 2-12 hours until the rust and stains are removed. During this time, constant observation is required and should not be excessive.

It should be noted that each embodiment in this specification is described in a progressive manner, each embodiment focuses on the differences from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description is only a description of the preferred embodiments of the present invention, and does not limit the scope of the present invention. Any changes and modifications made by those of ordinary skill in the field of the present invention based on the above disclosures shall fall within the protection scope of the claims.

Claims (9)

1. a kind of method for cleaning being used for the granitic plaster alien invasion of historical building, which is characterized in that include the following steps：

S1, granitic plaster alien invasion of the selection with rendering layer；

S2 taps rendering layer outermost in S1, and the rendering layer is loosened；

S3 is rinsed the rendering layer loosened in S2 by injection apparatus；

S4, judges whether the cleaning of outermost layer rendering layer has next layer of rendering layer later, if any S5 is then carried out, is completed if not Cleaning to granitic plaster alien invasion；

S5 detects the pH value of next layer of rendering layer of the rendering layer cleaned up；

The pH value in S5 is adjusted in S6, and so that the pH of the next layer of rendering layer is neutrality；

S7 after the next layer of rendering layer drying in S6, repeats S2-S6, clears up, completed to water brush until by all rendering layers The cleaning of stone alien invasion.

2. a kind of method for cleaning being used for the granitic plaster alien invasion of historical building according to claim 1, feature exist In, after the completion of tapping in the S2, judge whether all rendering layers all tapping loosening state, if then carrying out S3, if It is not that steam heat treatment is carried out to the part that can not be loosened using steam unit, until part loosening, then carries out S3.

3. a kind of method for cleaning being used for the granitic plaster alien invasion of historical building according to claim 2, feature exist In after carrying out steam heat treatment to the part that can not tap loosening using steam unit, to nothing by the way of manual cleanup Method taps the rendering layer segment loosened and is cleared up.

4. a kind of method for cleaning being used for the granitic plaster alien invasion of historical building according to claim 3, feature exist In the manual cleanup is using one or more of bamboo chip, steel disc or iron wire.

5. a kind of method for cleaning being used for the granitic plaster alien invasion of historical building according to claim 3 or 4, feature It is, depainting cream is smeared to the part that can not be also cleared up using manual cleanup, by depainting cream after depainting cream smears setting time Removal, so as to will be unable to the removal of the rendering layer of manual cleanup part.

6. a kind of method for cleaning being used for the granitic plaster alien invasion of historical building according to claim 5, feature exist In after depainting cream is smeared, in depainting cream away from the side of granitic plaster alien invasion covering permeation-preventing film, and so that permeation-preventing film will be de- Cream all standing is painted on granitic plaster alien invasion.

7. a kind of method for cleaning being used for the granitic plaster alien invasion of historical building according to claim 6, feature exist In the time of the permeation-preventing film covering depainting cream is 8h-12h.

8. a kind of method for cleaning being used for the granitic plaster alien invasion of historical building according to claim 1, feature exist In judging on the rendering layer in the S2 whether there is iron rust, if any then in having and covering algae clay or blank sheet of paper slurry at iron rust One kind, for removing removing rust.

9. a kind of method for cleaning being used for the granitic plaster alien invasion of historical building according to claim 1, feature exist In the hydraulic pressure rinsed in the S3 is adjustable.