Toning and repairing material for brick and tile cultural relics and application thereof

Abstract

The invention discloses a toning and repairing material for brick and tile cultural relics and application of the toning and repairing material, and relates to the technical field of brick and tile material repairing. According to the property and color change of bricks and tiles, the sintering material ginger nut, quartz sand, attapulgite, yellow pottery clay, arenosol, leytorite powder, tourmaline powder and green volcanic stone powder are adopted as natural mineral raw materials, and the obtained cultural relic color-mixing repairing material is stable in color and is not prone to discoloring after being repaired in an outdoor environment for a long time; and the natural mineral raw material and the repairing and shaping material or the natural raw stone have good binding force, so that the cultural relic toning and repairing material is relatively good in connection stability and not easy to fall off, and the risk that the cultural relics are damaged due to repeated repairing is reduced. Besides, by controlling the proportion of all the raw materials, multiple colors similar to the color of the tile material can be obtained through rapid modulation, the difficulty of toning and repairing of the tile material is lowered, a rapid compounding basis is provided for toning of the tile material, and the color of the repaired area is harmonious and unified with the color of surrounding raw stone.

Description

Technical Field

[0001] The invention relates to the technical field of brick and tile material restoration, and in particular to a coloring restoration material for brick and tile cultural relics and application thereof. Background Art

[0002] Bricks and tiles are a common material in ancient buildings. They are found in many surviving ancient architectural relics. Bricks and tiles are prone to cracking, weathering, and damage when they are placed outdoors for a long time. This not only affects the safety and stability of the cultural relics, but also causes immeasurable losses to the various values ​​​​endowed by the cultural relics themselves.

[0003] At the same time, due to the variety of bricks and tiles, the specifications of brick materials are also relatively chaotic and there is no unified standard, resulting in different brick colors from different brick kilns. Therefore, in the process of repairing brick and tile materials, for different repair areas of the same stone material, repair materials with similar colors must be allocated to achieve a coordinated and unified overall restoration effect of the cultural relics.

[0004] The current restoration method includes reshaping, shaping and coloring the area to be restored to ensure the overall restoration effect of the cultural relics is coordinated and unified. The existing coloring process mainly uses chemical synthetic pigments such as Chinese painting pigments and watercolor pigments for coloring. These materials have poor aging resistance under outdoor natural climate conditions. After a period of restoration, they are prone to discoloration or falling off, which is inconsistent with the color of the surrounding original stones, affecting the appreciation and protection of cultural relics. The area to be restored needs to be repaired repeatedly, which not only increases the cost of restoration, but also may cause irreversible damage to the cultural relics during each restoration process, which is not conducive to the protection of cultural relics.

[0005] In view of this, the present invention is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a color-adjusting and repairing material for brick and tile cultural relics and application thereof.

[0007] The present invention is achieved in that:

[0008] In a first aspect, the present invention provides a coloring and restoration material for brick and tile cultural relics, which includes, by mass percentage, burned granite: 5% to 50%, quartz sand: 15% to 50%, attapulgite: 0% to 37.5%, yellow clay: 0% to 45%, red sand: 0% to 25%, retrostone powder: 0% to 20%, tourmaline powder: 0% to 50% and green volcanic stone powder: 0% to 5%.

[0009] The color value parameters of the burned gravel include: L=74~75, a=4~5, b=14~15.

[0010] The color value parameters of quartz sand include: L=88~90, a=0.1~0.2, b=2.5~3.5.

[0011] The color value parameters of attapulgite include: L=85-86, a=1.3-2.3, b=0-1.

[0012] The color value parameters of yellow clay include: L=60~61, a=12~13, b=32~33.

[0013] The color value parameters of red sandy soil include: L=50~51, a=22~23, b=32~33.

[0014] The color parameters of retostone powder include: L=68.3-69.3, a=0.1-1, b=1-2.

[0015] The color parameters of tourmaline powder include: L=33.5-34.5, a=1-2, b=3-4.

[0016] The color value parameters of green volcanic stone powder include: L=77.3~78.3, a=-4~-5, b=12~13.

[0017] In a second aspect, the present invention provides an application of a material according to any one of the aforementioned embodiments in the repair of brick and tile-like stone.

[0018] Preferably, the material application method includes mixing the raw materials of the material with water in proportion and then applying the mixture to the surface of the brick and tile-like stone.

[0019] Preferably, the mass ratio of the raw material to water is 1:0.35-0.4.

[0020] The present invention has the following beneficial effects:

[0021] The present invention provides a color-adjusting and repairing material for brick and tile cultural relics and its application. According to the properties and color changes of brick and tile, the color-adjusting and repairing material for brick and tile cultural relics is obtained by mixing natural mineral raw materials. The cultural relic color-adjusting and repairing material is natural, stable in color, and not easy to change color even in an open-air environment for a long time after repair, and has good color stability; and the natural mineral raw materials have good bonding force with the repairing and patching materials or natural raw stones, so that the connection stability of the cultural relic color-adjusting and repairing material is better, not easy to fall off, and the risk of damage to the cultural relic by repeated repair of the cultural relic is reduced. In addition, by controlling the proportion of each raw material, a variety of colors similar to the color of the brick and tile material can be quickly modulated, which reduces the difficulty of color-adjusting and repairing the brick and tile material, provides a basis for rapid compounding for the color-adjusting of the brick and tile material, realizes the color-adjusting and repairing of brick and tile materials of different colors, and the color of the repaired area is harmonious and unified with the surrounding raw stones. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a color difference diagram of bricks and tiles at different positions;

[0024] Figure 2 A color comparison diagram of the color-adjusting restoration material for brick and tile cultural relics provided in Example 2 of the present invention and the corresponding brick and tile original stone;

[0025] Figure 3 A color comparison diagram of the color-adjusting restoration material for brick and tile cultural relics provided in Example 3 of the present invention and the corresponding brick and tile original stone;

[0026] Figure 4 A color comparison diagram of the color-adjusting restoration material for brick and tile cultural relics provided in Example 4 of the present invention and the corresponding brick and tile original stone;

[0027] Figure 5 A color comparison diagram of the color-adjusting restoration material for brick and tile cultural relics provided in Example 5 of the present invention and the corresponding brick and tile original stone;

[0028] Figure 6 A color comparison diagram of the color-adjusting restoration material for brick and tile cultural relics provided in Example 6 of the present invention and the corresponding brick and tile original stone;

[0029] Figure 7 A color comparison diagram of the color-adjusting restoration material for brick and tile cultural relics provided in Example 7 of the present invention and the corresponding brick and tile original stone;

[0030] Figure 8 This is a color comparison diagram of the color-adjusting restoration material for brick and tile cultural relics provided in Example 8 of the present invention and the corresponding brick and tile original stone. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be described clearly and completely below. If the specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or conditions recommended by the manufacturer. If the manufacturer of the reagents or instruments used is not specified, they are all conventional products that can be purchased commercially.

[0032] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0033] First of all, it should be noted that the color value parameters L, a and b mentioned in the present invention are color representation parameters in the CIELAB color space, which is a device-independent color space and is widely used in color theory and color difference calculation.

[0034] L stands for lightness, which indicates how light or dark a color is. L values ​​usually range from 0 (black) to 100 (white), with lower values ​​representing darker colors and higher values ​​representing lighter colors.

[0035] a represents the range from green to red, with positive values ​​indicating a reddish color and negative values ​​indicating a greenish color.

[0036] b represents the range from blue to yellow, with positive values ​​indicating yellowish color and negative values ​​indicating bluish color.

[0037] By controlling the values ​​of L, a and b of each substance (raw materials or coloring and restoration materials for brick and tile cultural relics), the color uniformity of each substance can be ensured; and the L, a and b parameters can be directly detected by equipment, such as using a spectrophotometer, and the detection method is simple and easy to obtain.

[0038] In a first aspect, the present invention provides a coloring and restoration material for brick and tile cultural relics, which includes, by mass percentage, burned granite: 5% to 50%, quartz sand: 15% to 50%, attapulgite: 0% to 37.5%, yellow clay: 0% to 45%, red sand: 0% to 25%, retrostone powder: 0% to 20%, tourmaline powder: 0% to 50% and green volcanic stone powder: 0% to 5%.

[0039] By compounding with natural mineral raw materials such as burnt gravel, quartz sand, attapulgite, yellow clay, red sand, reto stone powder, tourmaline powder and green volcanic stone powder, the color stability of the cultural relic coloring and restoration materials is better, and it is not easy to change color even if it is placed in an open-air environment for a long time after restoration; and the natural mineral raw materials have good bonding with the repair materials or natural raw stones, so that the connection stability of the cultural relic coloring and restoration materials is better and it is not easy to fall off, reducing the risk of damage to the cultural relics caused by repeated restoration of cultural relics. In addition, by controlling the proportion of each raw material, a variety of colors similar to the color of brick and tile materials can be quickly adjusted, which reduces the difficulty of coloring and restoration of brick and tile materials, provides a basis for rapid compounding of brick and tile materials, realizes the coloring and restoration of brick and tile materials of different colors, and the color of the repaired area is harmonious and unified with the surrounding raw stones.

[0040] Among them, burnt gravel is the main cementing material of the repair material, which plays a bonding role. In addition, the color of burnt gravel is light gray with a white tint, and it can be used as a raw material to reduce the saturation of the color-tuning repair material of cultural relics. The content of burnt gravel can be, for example, any value among 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45% or 50%, or a range value between any two values.

[0041] In order to ensure the overall uniformity of the color of the brick and tile cultural relics restoration materials, the color value parameters of the burned gravel include: L=74~75, a=4~5, b=14~15.

[0042] Quartz sand is a filling material for restoration materials, which can reduce the shrinkage of restoration materials. In addition, the color of quartz sand is close to white, which can adjust the color depth of cultural relics restoration materials. The content of quartz sand can be, for example, any value among 15%, 20%, 25%, 30%, 35%, 40%, 45% or 50%, or a range between any two values.

[0043] In order to ensure the overall uniformity of the color of the brick and tile cultural relics restoration materials, the color value parameters of quartz sand include: L = 88 ~ 90, a = 0.1 ~ 0.2, b = 2.5 ~ 3.5.

[0044] The function of attapulgite is to increase the plasticity of the repair material. The content of attapulgite can be, for example, any value among 0%, 5%, 10%, 15%, 20%, 25%, 30% or 37.5%, or a range value between any two values.

[0045] In order to ensure the overall uniformity of the color of the brick and tile cultural relics restoration materials, the color value parameters of attapulgite include: L=85~86, a=1.3~2.3, b=0~1.

[0046] Bricks and tiles come in a variety of colors, including gray or yellow. In addition, there are some brick and tile raw stones that are reddish, white, or bluish. Therefore, in order to meet the color matching needs of brick and tile raw stones of different colors, it is necessary to use colorful natural mineral raw materials such as yellow clay, red sand, reto stone powder, tourmaline powder, and green volcanic stone powder for color matching to ensure that the color of the cultural relics color restoration materials is coordinated and unified with the surrounding brick and tile raw stones.

[0047] Yellow clay is used as a yellow rock color to adjust the color of cultural relics coloring and restoration materials, and is particularly suitable for complementing the color of yellowish brick and tile raw stones. The amount of yellow clay added determines the yellowness of the overall color of the cultural relics coloring and restoration materials, so the amount of yellow clay added can be adjusted according to the color of the brick and tile raw stones. For example, the content of yellow clay can be any value among 0%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45% or 50%, or a range value between any two values.

[0048] Specifically, in order to ensure that the yellow clay is controlled within the above range to obtain a color that is coordinated and unified with the surrounding raw stones, the color value parameters of the yellow clay include: L=60~61, a=12~13, b=32~33.

[0049] Red sand is used as red rock color to adjust the color of cultural relics color restoration materials, especially for yellowish and reddish brick and tile raw stones. According to the color of the brick and tile raw stone, the content of red sand can be adjusted to any value of 0%, 5%, 10%, 15%, 20% or 25%, or a range between any two values.

[0050] Specifically, in order to ensure that the red sandy soil is controlled within the above range to obtain a color that is coordinated and unified with the surrounding raw stones, the color value parameters of the red sandy soil include: L=50~51, a=22~23, b=32~33.

[0051] As a gray rock color, retosite powder is used to adjust the color of cultural relic coloring and restoration materials, and can reduce the saturation of cultural relic coloring and restoration materials. By changing the content of retosite powder, the grayscale of cultural relic coloring and restoration materials can be adjusted. For example, the content of retosite powder can be any value among 0%, 2%, 4%, 6%, 8%, 10%, 12%, 14%, 16%, 18% or 20%, or a range value between any two values.

[0052] The higher the grayness of the surrounding brick and tile raw stones, the more the content of reto stone powder can be increased; the lower the grayness of the surrounding brick and tile raw stones, for example, when they are white or yellowish, the content of reto stone powder can be reduced.

[0053] Specifically, in order to ensure that the retosite powder is controlled within the above range to obtain a color that is coordinated and unified with the surrounding raw stones, the color value parameters of the retosite powder include: L=68.3~69.3, a=0.1~1, b=1~2.

[0054] Tourmaline powder is used as black rock color to adjust the color of cultural relic coloring and restoration materials. For example, the darkness of the cultural relic coloring and restoration materials can be reduced to match the color of the surrounding bricks and tiles. The content of tourmaline powder can be any value among 0%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45% or 50%, or a range between any two values.

[0055] Specifically, in order to ensure that the tourmaline powder is controlled within the above range to obtain a color that is coordinated and unified with the surrounding raw stones, the color value parameters of the tourmaline powder include: L=33.5~34.5, a=1~2, b=3~4.

[0056] Green volcanic stone powder is used as green rock color to adjust the color of cultural relics coloring and restoration materials. When the color of the original brick and tile stone is green or blue, the content of green volcanic stone powder can be increased, otherwise the content of green volcanic stone powder can be reduced. The content of green volcanic stone powder can be any value of 0%, 1%, 2%, 3%, 4% or 5%, or a range between any two values.

[0057] Specifically, in order to ensure that the green volcanic stone powder is controlled within the above range to obtain a color that is coordinated and unified with the surrounding raw stones, the color value parameters of the green volcanic stone powder include: L=77.3~78.3, a=-4~-5, b=12~13.

[0058] like Figure 1 As shown in the figure, due to the fact that the sedimentation process of rocks during diagenesis is not completely consistent, the colors of bricks and tiles in different locations are different, and the cultural relics will also have certain color changes after being affected by long-term outdoor open-air environments (such as rain, snow, and sunlight); at the same time, the colors of bricks and tiles also include two main colors: gray and yellow. Therefore, for bricks and tiles of different colors, the present invention provides the following formula of cultural relics coloring and restoration materials.

[0059] Since the coloring process is relatively complicated, the way the color changes after adding raw materials of different colors is not uniquely determined. The original brick and tile stones mainly appear gray or yellow, and then present other colors besides gray according to the deposition method in different locations and the influence of the external environment. For example, the color of the original brick and tile stone can be gray of different brightness, such as dark gray and light gray; or different degrees of yellow, such as dark yellow and light yellow, or reddish; the original brick and tile stones in some areas are white; and the color of the original brick and tile stones in some areas is cyan, etc. The following is the formula of the coloring restoration materials for brick and tile cultural relics of different colors and the color value parameters of their corresponding colors.

[0060] In an optional embodiment, when the cultural relics coloring and restoration material is dark gray, the composition of the material, calculated by mass percentage, includes burned gravel: 5% to 10%, yellow clay: 40% to 45% and tourmaline powder: 45% to 50%; when the material is dark gray, the color value parameters of the material include L=37 to 40, a=2 to 3, b=6 to 7.

[0061] Preferably, when the cultural relics coloring and restoration material presents a dark gray, the composition of the material, by mass percentage, includes burnt gravel: 5%, yellow clay: 45% and tourmaline powder: 50%; when the material presents a dark gray, the color value parameters of the material include L=38~39, a=2.5~3, b=6.2~7.

[0062] In an optional embodiment, when the cultural relics coloring and restoration material presents a medium gray color, the composition of the material, by mass percentage, includes burned gravel: 10% to 15%, attapulgite: 35% to 37.5%, retrostone powder: 15% to 20%, tourmaline powder: 22% to 28% and green volcanic stone powder: 3% to 5%; when the material presents a medium gray color, the color value parameters of the material include L = 59 to 61, a = 0.5 to 1.5, b = 3 to 4.

[0063] Preferably, when the cultural relics coloring and restoration material presents a medium gray color, the composition of the material, by mass percentage, includes burned gravel: 12.5%, attapulgite: 37.5%, retrostone powder: 20%, tourmaline powder: 25% and green volcanic stone powder: 5%; when the material presents a medium gray color, the color value parameters of the material include L=59~60.5, a=0.8~1.2, b=3.2~3.8.

[0064] In an optional embodiment, when the cultural relics coloring and restoration material appears light gray, the composition of the material, calculated by mass percentage, includes burned gravel: 42% to 48%, quartz sand: 18% to 22%, attapulgite: 2% to 8%, retrostone powder: 8% to 12% and tourmaline powder: 18% to 22%; when the material appears light gray, the color value parameters of the material include L=53 to 55, a=2 to 3, b=6 to 7.

[0065] Preferably, when the cultural relics coloring and restoration material presents a light gray color, the composition of the material, by mass percentage, includes burned gravel: 45%, quartz sand: 20%, attapulgite: 5%, retrostone powder: 10% and tourmaline powder: 20%; when the material presents a light gray color, the color value parameters of the material include L=53.5~54.5, a=2.2~2.8, b=6~6.8.

[0066] In an optional embodiment, when the cultural relics coloring and restoration material presents a brown-gray color, the composition of the material, calculated by mass percentage, includes burned gravel: 45% to 50%, quartz sand: 15% to 20%, retrostone powder: 8% to 12% and tourmaline powder: 22% to 28%; when the material presents a brown-gray color, the color value parameters of the material include L=54 to 56, a=1 to 2, b=5 to 6.

[0067] Preferably, when the cultural relics coloring and restoration material presents a brown-gray color, the composition of the material, by mass percentage, includes burned gravel: 50%, quartz sand: 15%, retrostone powder: 10% and tourmaline powder: 25%; when the material presents a brown-gray color, the color value parameters of the material include L=54.5~55.5, a=1.2~2, b=5.5~6.

[0068] In an optional embodiment, when the cultural relics coloring and restoration material presents a dark brown color, the composition of the material, calculated by mass percentage, includes burned gravel: 10% to 15%, yellow clay: 35% to 40% and tourmaline powder: 45% to 50%; when the material presents a dark brown color, the color value parameters of the material include L=42 to 45, a=1 to 3, and b=6 to 7.

[0069] Preferably, when the cultural relics coloring and restoration material presents a dark brown color, the composition of the material, by mass percentage, includes burnt gravel: 12.5%, yellow clay: 37.5% and tourmaline powder: 50%; when the material presents a dark brown color, the color value parameters of the material include L=42~45, a=1.5~2.6, b=6.2~6.8.

[0070] In an optional embodiment, when the cultural relics coloring and restoration material presents a light brown color, the composition of the material, by mass percentage, includes burned gravel: 5% to 10%, quartz sand: 38% to 42%, yellow clay: 40% to 45% and tourmaline powder: 8% to 12%; when the material presents a light brown color, the color value parameters of the material include L = 48 to 51, a = 3 to 4, b = 10 to 11.5.

[0071] Preferably, when the cultural relics coloring and restoration material presents a light brownish yellow color, the composition of the material, by mass percentage, includes burnt gravel: 5%, quartz sand: 40%, yellow clay: 45% and tourmaline powder: 10%; when the material presents a light brownish yellow color, the color value parameters of the material include L=49~50, a=3.5~4, b=10.2~11.2.

[0072] In an optional embodiment, when the cultural relic coloring and restoration material appears reddish yellow, the composition of the material, calculated by mass percentage, includes burned gravel: 10% to 15%, yellow clay: 35% to 40% and tourmaline powder: 45% to 50%; when the material appears reddish yellow, the color value parameters of the material include L=64 to 66, a=6 to 7, b=16.5 to 17.5.

[0073] Preferably, when the cultural relic coloring and restoration material appears reddish yellow, the composition of the material, calculated by mass percentage, includes burned gravel: 12.5%, yellow clay: 37.5% and tourmaline powder: 50%; when the material appears reddish yellow, the color value parameters of the material include L=64.5~65.8, a=6.2~6.8, b=16.8~17.4.

[0074] In an optional embodiment, when the cultural relics coloring and restoration material presents a yellowish khaki color, the composition of the material, calculated by mass percentage, includes burned gravel: 5% to 10%, quartz sand: 42% to 48%, yellow clay: 40% to 45% and retrostone powder: 2% to 8%; when the material presents a yellowish khaki color, the color value parameters of the material include L=55 to 58, a=6.5 to 8, and b=16 to 17.

[0075] Preferably, when the cultural relics coloring and restoration material presents a yellowish-khaki color, the composition of the material, by mass percentage, includes burned gravel: 5%, quartz sand: 45%, yellow clay: 45% and retrostone powder: 5%; when the material presents a yellowish-khaki color, the color value parameters of the material include L=56-57, a=6.5-7.5, and b=16-16.5.

[0076] In an optional embodiment, when the cultural relics coloring and restoration material appears red, the composition of the material, calculated by mass percentage, includes burned gravel: 22% to 28%, quartz sand: 38% to 42%, red sand soil: 20% to 25% and retrostone powder: 8% to 12%; when the material appears red, the color value parameters of the material include L=57 to 59, a=9 to 10, b=12 to 13.

[0077] Preferably, when the cultural relics coloring and restoration material appears red, the composition of the material, by mass percentage, includes burned gravel: 25%, quartz sand: 40%, red sand soil: 25% and retostone powder: 10%; when the material appears red, the color value parameters of the material include L=57.5~58.5, a=9.5~10, b=12.2~12.8.

[0078] In an optional embodiment, when the cultural relics coloring and restoration material presents a light bluish gray color, the composition of the material, calculated by mass percentage, includes burned gravel: 22% to 28%, red sand: 20% to 25% and tourmaline powder: 45% to 50%; when the material presents a light bluish gray color, the color value parameters of the material include L=43 to 46, a=4 to 5, and b=5.5 to 7.

[0079] Preferably, when the cultural relics coloring and restoration material presents a light bluish gray color, the composition of the material, by mass percentage, includes burnt gravel: 25%, red sand: 25% and tourmaline powder: 50%; when the material presents a light bluish gray color, the color value parameters of the material include L=44~45, a=4~4.5, b=5.8~6.8.

[0080] In an optional embodiment, the particle size of the quartz sand is 80 to 120 meshes. By controlling the particle size of the quartz sand within the above range, the overall fineness of the material and the surrounding bricks and tiles can be coordinated and unified, and the tightness of the connection between the material and the repair material and / or the bricks and tiles can be ensured to avoid material falling off.

[0081] In a second aspect, the present invention provides an application of a material according to any one of the aforementioned embodiments in the repair of brick and tile-like stone.

[0082] Preferably, the application method of the cultural relic coloring and restoration material includes mixing the raw materials of the material with water in proportion and then applying the mixture to the surface of the brick and tile stone material.

[0083] Preferably, the mass ratio of the total mass of the raw materials of the cultural relics coloring and restoration material to water is 1:0.9-1.1.

[0084] The cultural relic coloring and restoration material provided by the present invention has natural raw materials and does not require any chemical additives. It only uses water as a mixing medium for the various raw materials and does not require high-temperature heating for consolidation and molding. It does not cause any physical or chemical damage to the cultural relic itself, and the material has strong compatibility and reversibility.

[0085] In some preferred embodiments, when the materials provided by the present invention are applied to the restoration of brick and tile-like stones, it is only necessary to detect the color value parameters of the area to be restored, and then mix them according to the formula corresponding to the color value parameters provided by the present invention, so that a cultural relic coloring restoration material with uniform color can be quickly obtained, which reduces the difficulty of coloring, reduces the number of repeated color tests, and reduces the requirements for the restoration experience or professional knowledge of the restoration personnel, thereby ensuring the accuracy of the color restoration of cultural relics, while avoiding the increase in costs and the possibility of damage to cultural relics caused by repeated repairs.

[0086] Example 1

[0087] The present embodiment provides a coloring and repairing material for brick and tile cultural relics, which comprises, by mass percentage, 5% burnt grit, 45% yellow clay and 50% tourmaline powder, and can be used to repair dark grey brick and tile raw stones.

[0088] Example 2

[0089] This embodiment provides a coloring and repairing material for brick and tile cultural relics, which includes, by mass percentage, 12.5% ​​of burnt granite, 37.5% of attapulgite, 20% of retortite powder, 25% of tourmaline powder and 5% of green volcanic stone powder, and can be used to repair medium-gray brick and tile raw stones, for example Figure 2 The picture shows a medium gray plain tile from the Beijing area.

[0090] Example 3

[0091] This embodiment provides a coloring and repairing material for brick and tile cultural relics, which includes, by mass percentage, 45% of burnt granite, 20% of quartz sand, 5% of attapulgite, 10% of retortite powder and 20% of tourmaline powder, and can be used to repair light gray brick and tile raw stones, such as Figure 3 The light grey wall bricks of the Jinshanling Great Wall are shown.

[0092] Example 4

[0093] This embodiment provides a coloring and repairing material for brick and tile cultural relics, which includes, by mass percentage, 50% of burnt granite, 15% of quartz sand, 10% of retortite powder and 25% of tourmaline powder, and can be used to repair brown-gray brick and tile raw stones, for example Figure 4 The brown-gray animal head bricks of Chengde Mountain Resort are shown.

[0094] Example 5

[0095] This embodiment provides a coloring and repairing material for brick and tile cultural relics, which includes, by mass percentage, 12.5% ​​of burnt grit, 37.5% of yellow clay, and 50% of tourmaline powder, and can be used to repair dark brown brick and tile raw stones, such as Figure 5 The brown-yellow dripping eaves of Chengde Mountain Resort are shown.

[0096] Example 6

[0097] This embodiment provides a coloring and repairing material for brick and tile cultural relics, which includes, by mass percentage, 5% burnt grit, 40% quartz sand, 45% yellow clay and 10% tourmaline powder, and can be used to repair light brown brick and tile raw stones, such as Figure 6 The light brown bricks from the Beijing area are shown.

[0098] Example 7

[0099] This embodiment provides a coloring and repairing material for brick and tile cultural relics, which includes, by mass percentage, 12.5% ​​of burnt gravel, 37.5% of yellow clay, and 50% of tourmaline powder, and can be used to repair reddish-yellow brick and tile raw stones, such as Figure 7 The reddish-yellow bricks from the Beijing area are shown.

[0100] Example 8

[0101] This embodiment provides a coloring and repairing material for brick and tile cultural relics, which includes, by mass percentage, 5% burnt gravel, 45% quartz sand, 45% yellow clay and 5% reto stone powder, and can be used to repair khaki brick and tile raw stones, such as Figure 8 The picture shows the khaki plain tiles from Beijing.

[0102] Example 9

[0103] The present embodiment provides a coloring and repairing material for brick and tile cultural relics, which includes, by mass percentage, 25% of burnt gravel, 40% of quartz sand, 25% of red sand soil and 10% of reto stone powder, and can be used to repair red brick and tile raw stones.

[0104] Example 10

[0105] The present embodiment provides a coloring and repairing material for brick and tile cultural relics, which includes, by mass percentage, 25% of burnt grit, 25% of red sand soil and 50% of tourmaline powder, and can be used to repair light blue-grey brick and tile raw stones.

[0106] Test Example 1

[0107] The color-adjusting restoration material for brick and tile cultural relics provided in the above embodiment is applied to the restoration of brick and tile original stones of corresponding colors, and the color value parameters of the brick and tile original stones of corresponding colors are detected and recorded in Table 1.

[0108] The color restoration materials for the brick and tile cultural relics of each embodiment were prepared into a cake-shaped sample block with a diameter of 2.5 cm and a thickness of 1 cm, and then the color value parameters of the sample block were detected and recorded in Table 1.

[0109] The sample block preparation method is: after mixing the raw materials of the coloring and restoration materials of brick and tile cultural relics in proportion, add an equal mass of deionized water, stir thoroughly, and then prepare it into a cake-shaped sample block, and place the sample block in a cool and dry place to stand until it is fully dried.

[0110] The color value parameters are tested by a spectrophotometer, and the color value parameters of the brick and tile raw stone and the sample obtained by the test are compared, and the total color difference △E between the two is calculated according to the color space color difference calculation formula in the National Standard of the People's Republic of China - Uniform Color Space and Color Difference Formula "GB / T 7921-1997".

[0111] According to the color difference tolerance range of CIELAB color space:

[0112] ΔE<1: Imperceptible color difference, that is, it is difficult for the naked eye to distinguish the difference between the two colors.

[0113] 1≤ΔE<2: Slight color difference, which can only be detected by careful observation.

[0114] 2≤ΔE<3.5: General color difference, which can be clearly seen by the naked eye.

[0115] ΔE ≥ 3.5: Significant color difference, very easy to detect, may have a significant impact on the appearance quality of the product.

[0116] Table 1 Color parameters of samples and brick and tile raw stones

[0117]

[0118]

[0119] As can be seen from Table 1, the samples prepared by the color adjustment and restoration materials for brick and tile cultural relics provided in Examples 1 to 10 of the present invention have a color difference of less than 1 with the original brick and tile stones, and there is no color difference when observed with the naked eye. They are very coordinated with the color of the cultural relics themselves, have good compatibility, and are suitable for the restoration of cultural relics.

[0120] The samples prepared in Examples 2 to 8 were placed together with the corresponding raw bricks and tiles and photographed and observed. Figures 2 to 8 The results are shown. Figures 2 to 8It can be seen that the sample blocks made by using the cultural relic coloring and restoration material provided by the embodiment of the present invention have almost no difference in color from the original brick and tile stones, and are suitable for cultural relic restoration.

[0121] Comparative Example 1

[0122] This comparative example provides a coloring and restoration material for brick and tile cultural relics, which includes, by mass percentage, 50% burned grit, 40% quartz sand, 4.5% ochre and 5.5% carbon black, and can be used to repair dark grey brick and tile raw stones.

[0123] Comparative Example 2

[0124] This comparative example provides a coloring and restoration material for brick and tile cultural relics, which includes, by mass percentage, 50% burned gravel, 40% quartz sand, 1% titanium dioxide, 5% light gray, 3% carbon black and 1% light green, and can be used to repair medium-gray brick and tile raw stones.

[0125] Comparative Example 3

[0126] This comparative example provides a coloring and restoration material for brick and tile cultural relics, which includes, by mass percentage, 50% burned gravel, 40% quartz sand, 3% titanium dioxide, 6% light gray and 1% carbon black, and can be used to repair light gray brick and tile raw stones.

[0127] Test Example 2

[0128] The cultural relic coloring and restoration materials provided in Comparative Examples 1 to 3 were prepared into cake-shaped samples of the same size according to the method of Experimental Example 1, and their color value parameters were tested, and the results shown in Table 2 were obtained.

[0129] Then, the samples of Comparative Examples 1 to 3 and Examples 1 to 3 were placed in a natural environment with high temperature and high humidity and abundant rainfall in summer, and low temperature and low humidity and snowfall in winter, and aged naturally for 365 days. The color value parameters of the samples after the 365th day were tested and recorded in Table 2. The color value parameters detected on the first day (the first day is the day for testing the color after the repair material is naturally dried) and after the 365th day were compared, and the ΔE color difference values ​​of the Examples and Comparative Examples after 365 days of outdoor natural cycle aging were calculated.

[0130] Table 2 Chromaticity parameters of samples of the embodiment and comparative example before and after natural aging

[0131]

[0132] It can be seen from Table 2 that the cultural relic coloring and restoration material provided by the embodiment of the present invention has better durability, and has good color stability after long-term placement. Comparative Examples 1 to 3 use chemical synthetic pigments. Although the color difference in the initial stage is small compared with the original brick and tile stone, after long-term placement, the color changes significantly and the color difference increases. It is not suitable as a coloring restoration material for cultural relic restoration, and it is easy to need repeated restoration, which increases the time and labor cost of restoring the cultural relic body and increases the risk of damage to the cultural relic.

[0133] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coloring and repairing material for brick and tile cultural relics, characterized in that: Calculated by mass percentage, it includes burnt rock: 5% to 50%, quartz sand: 15% to 50%, attapulgite: 0% to 37.5%, yellow clay: 0% to 45%, red sand: 0% to 25%, retrostone powder: 0% to 20%, tourmaline powder: 0% to 50% and green volcanic stone powder: 0% to 5%; The color value parameters of the burnt granite include: L=74-75, a=4-5, b=14-15; The color value parameters of the quartz sand include: L=88-90, a=0.1-0.2, b=2.5-3.5; The color value parameters of the attapulgite include: L=85-86, a=1.3-2.3, b=0-1; The color value parameters of the yellow clay include: L=60-61, a=12-13, b=32-33; The color value parameters of the red sandy soil include: L=50-51, a=22-23, b=32-33; The color parameters of the retostone powder include: L=68.3-69.3, a=0.1-1, b=1-2; The color parameters of the tourmaline powder include: L=33.5-34.5, a=1-2, b=3-4; The color value parameters of the green volcanic stone powder include: L=77.3-78.3, a=-4--5, b=12-13.

2. The material according to claim 1, characterized in that When the material is dark gray, the composition of the material, by mass percentage, includes burnt granite: 5% to 10%, yellow clay: 40% to 45% and tourmaline powder: 45% to 50%; when the material is dark gray, the color value parameters of the material include L=37 to 40, a=2 to 3, and b=6 to 7; Preferably, when the material is medium gray, the composition of the material, by mass percentage, includes burnt granite: 10% to 15%, attapulgite: 35% to 37.5%, retrostone powder: 15% to 20%, tourmaline powder: 22% to 28% and green volcanic stone powder: 3% to 5%; when the material is medium gray, the color value parameters of the material include L=59 to 61, a=0.5 to 1.5, b=3 to 4; Preferably, when the material is light gray, the composition of the material, by mass percentage, includes burnt gravel: 42% to 48%, quartz sand: 18% to 22%, attapulgite: 2% to 8%, retrostone powder: 8% to 12% and tourmaline powder: 18% to 22%; when the material is light gray, the color value parameters of the material include L=53 to 55, a=2 to 3, b=6 to 7.

3. The material according to claim 2, characterized in that When the material is dark gray, the composition of the material, by mass percentage, includes burnt granite: 5%, yellow clay: 45% and tourmaline powder: 50%; when the material is dark gray, the color value parameters of the material include L=38-39, a=2.5-3, b=6.2-7; Preferably, when the material is medium gray, the composition of the material, by mass percentage, includes burnt granite: 12.5%, attapulgite: 37.5%, retrostone powder: 20%, tourmaline powder: 25% and green volcanic stone powder: 5%; when the material is medium gray, the color value parameters of the material include L=59-60.5, a=0.8-1.2, b=3.2-3.8; Preferably, when the material is light gray, the composition of the material, by mass percentage, includes burnt granite: 45%, quartz sand: 20%, attapulgite: 5%, retrostone powder: 10% and tourmaline powder: 20%; when the material is light gray, the color value parameters of the material include L=53.5~54.5, a=2.2~2.8, b=6~6.

8.

4. The material according to claim 1, characterized in that When the material is brownish gray, the composition of the material, by mass percentage, includes burnt granite: 45% to 50%, quartz sand: 15% to 20%, retrostone powder: 8% to 12% and tourmaline powder: 22% to 28%; when the material is brownish gray, the color value parameters of the material include L=54 to 56, a=1 to 2, and b=5 to 6; Preferably, when the material is dark brown, the composition of the material, by mass percentage, includes burnt gravel: 10% to 15%, yellow clay: 35% to 40% and tourmaline powder: 45% to 50%; when the material is dark brown, the color value parameters of the material include L=42 to 45, a=1 to 3, and b=6 to 7; Preferably, when the material is light brown, the composition of the material, by mass percentage, includes burnt gravel: 5% to 10%, quartz sand: 38% to 42%, yellow clay: 40% to 45% and tourmaline powder: 8% to 12%; when the material is light brown, the color value parameters of the material include L=48 to 51, a=3 to 4, b=10 to 11.

5.

5. The material according to claim 4, characterized in that When the material is brownish gray, the composition of the material, by mass percentage, includes burnt granite: 50%, quartz sand: 15%, retrostone powder: 10% and tourmaline powder: 25%; when the material is brownish gray, the color value parameters of the material include L=54.5-55.5, a=1.2-2, b=5.5-6; Preferably, when the material is dark brown, the composition of the material, by mass percentage, includes burnt granite: 12.5%, yellow clay: 37.5% and tourmaline powder: 50%; when the material is dark brown, the color value parameters of the material include L=42-45, a=1.5-2.6, b=6.2-6.8; Preferably, when the material is light brown, the composition of the material, by mass percentage, includes burnt gravel: 5%, quartz sand: 40%, yellow clay: 45% and tourmaline powder: 10%; when the material is light brown, the color value parameters of the material include L=49~50, a=3.5~4, b=10.2~11.

2.

6. The material according to claim 1, characterized in that When the material is reddish yellow, the composition of the material, by mass percentage, includes burnt gravel: 10% to 15%, yellow clay: 35% to 40% and tourmaline powder: 45% to 50%; when the material is reddish yellow, the color value parameters of the material include L=64 to 66, a=6 to 7, and b=16.5 to 17.5; Preferably, when the material is khaki, the composition of the material, by mass percentage, includes burnt granite: 5% to 10%, quartz sand: 42% to 48%, yellow clay: 40% to 45% and retrostone powder: 2% to 8%; when the material is khaki, the color value parameters of the material include L=55 to 58, a=6.5 to 8, and b=16 to 17; Preferably, when the material appears red, the composition of the material, by mass percentage, includes burnt gravel: 22% to 28%, quartz sand: 38% to 42%, red sand soil: 20% to 25% and retrostone powder: 8% to 12%; when the material appears red, the color value parameters of the material include L=57 to 59, a=9 to 10, and b=12 to 13.

7. The material according to claim 6, characterized in that When the material is reddish yellow, the composition of the material, by mass percentage, includes burnt gravel: 12.5%, yellow clay: 37.5% and tourmaline powder: 50%; when the material is reddish yellow, the color value parameters of the material include L=64.5-65.8, a=6.2-6.8, b=16.8-17.4; Preferably, when the material is khaki, the composition of the material, by mass percentage, includes burnt gravel: 5%, quartz sand: 45%, yellow clay: 45% and retrostone powder: 5%; when the material is khaki, the color value parameters of the material include L=56-57, a=6.5-7.5, b=16-16.5; Preferably, when the material appears red, the composition of the material, by mass percentage, includes burnt gravel: 25%, quartz sand: 40%, red sand soil: 25% and retrostone powder: 10%; when the material appears red, the color value parameters of the material include L=57.5~58.5, a=9.5~10, b=12.2~12.

8.

8. The material according to claim 1, characterized in that When the material is light blue-gray, the composition of the material, by mass percentage, includes burnt granite: 22% to 28%, red sand: 20% to 25% and tourmaline powder: 45% to 50%; when the material is light blue-gray, the color value parameters of the material include L=43 to 46, a=4 to 5, and b=5.5 to 7; Preferably, when the material is light bluish gray, the composition of the material, by mass percentage, includes burnt gravel: 25%, red sand: 25% and tourmaline powder: 50%; when the material is light bluish gray, the color value parameters of the material include L=44~45, a=4~4.5, b=5.8~6.

8.

9. The material according to any one of claims 2 to 8, characterized in that The particle size of the quartz sand is 80-120 meshes.

10. Use of the material according to any one of claims 1 to 9 in the repair of brick and tile-like stone; Preferably, the application method of the material comprises mixing the raw materials of the material with water in proportion and then applying the mixture to the surface of the brick-like stone; Preferably, the mass ratio of the raw material of the material to water is 1:0.35-0.4.

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