CN115073088A

CN115073088A - UHPC decorative board

Info

Publication number: CN115073088A
Application number: CN202210664205.4A
Authority: CN
Inventors: 史俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-13
Filing date: 2022-06-13
Publication date: 2022-09-20

Abstract

The application provides a UHPC decorative board, which comprises a structural layer and a surface layer; the structural layer comprises n layers of white cement, specially-made white silicon micro powder, micro beads, texture quartz sand, a high-efficiency water reducing agent, a defoaming agent, organic fibers and the balance of water; the surface layer comprises white cement, special white silica micropowder, microbeads, texture quartz sand, a high-efficiency water reducing agent, a defoaming agent, acrylic emulsion, organic fibers and the balance of water; the manufacturing steps of the structural layer comprise: quantitatively releasing the structural layer manufacturing material into a stirrer after metering; spreading the structural layer material on a structural layer template, then laying mesh cloth, and then rolling and forming to obtain a first UHPC structural plate; and repeating the steps of spreading out the structural layer material, paving the gridding cloth and rolling and forming on the basis of the UHPC structural plate to finally obtain the UHPC structural plate comprising a plurality of layers of gridding cloth. The UHPC decorative board manufactured by the method has the characteristics of bending resistance, tensile strength, material density, flatness, stable surface effect and the like.

Description

UHPC decorative board

Technical Field

The invention relates to the technical field of building assembly, in particular to a manufacturing method of a UHPC decorative plate.

Background

Concrete is used as a building material with the largest consumption and the widest use, and is closely related to the daily life of people. With the increasing demand for concrete performance, a new Ultra High Performance Concrete (UHPC) has been developed, which has ultra high strength and excellent durability. By virtue of the excellent performance of the concrete, the ultra-high performance concrete has been widely applied to projects with harsh construction service environments such as oceans and nuclear power in recent 20 years. UHPC decorative boards are gaining wide attention and application in the building assembly technology field.

At present, in order to achieve a surface effect, a spraying process is generally adopted to spray the surface of the UHPC decorative plate. However, the ultra-high performance concrete is mainly characterized in that the gel material is large in dosage, the silica fume mixing amount is high, the water-to-gel ratio is extremely low, the viscosity is large, the fluidity is reduced, the injection processing difficulty is high, and the surface effect cannot be guaranteed. In addition, the UHPC assembled decorative plate mainly adopts a pouring process, but the cost for producing a special-shaped structure mould by the pouring process is very high, the surface effect cannot be ensured, and the specifications of embedded parts are limited.

Disclosure of Invention

In order to solve the technical problem, an embodiment of the invention provides a UHPC decorative board, which comprises a structural layer and a surface layer;

the structural layer manufacturing material comprises: white cement 30-40 wt.%; 5-10 wt.% of specially-made white silica micropowder, 5-10 wt.% of microbeads, 40-45 wt.% of texture quartz sand, 0.2-0.5 wt.% of high-efficiency water reducing agent, 0.02-0.5 wt.% of defoaming agent, 0.1-0.4 wt.% of organic fibers and the balance of water, and a mesh cloth n layer;

the surface layer manufacturing material comprises: white cement 30-40 wt.%; 5-10 wt.% of specially-made white silica micropowder, 5-10 wt.% of microbeads, 40-45 wt.% of texture quartz sand, 0.1-0.5 wt.% of high-efficiency water reducing agent, 0.02-0.5 wt.% of defoaming agent, 0.2-0.6 wt.% of acrylic emulsion, 0.1-0.4 wt.% of organic fiber and the balance of water;

the manufacturing method of the structural layer comprises the following steps:

quantitatively releasing the structural layer manufacturing material into a stirrer after metering;

stirring the structural layer materials by a stirrer, and spreading the uniformly mixed structural layer materials on a structural layer template to obtain a layer of material plate;

laying mesh cloth on the layer of material plate to obtain a layer of mesh cloth plate;

the grid cloth plate layer is formed by rolling through a forming roller to obtain a first UHPC structural plate, and the thickness of the first UHPC structural plate is 5-10 mm;

repeatedly, the stirring machine spreads the structural layer material on the first UHPC structural plate, then the gridding cloth is laid, then the forming roller is used for rolling and forming, and finally the UHPC structural plate is obtained, wherein the UHPC structural plate comprises n layers of gridding cloth.

In some embodiments of the invention, a UHPC trim panel is made by:

quantitatively releasing the surface layer manufacturing material into a surface layer stirrer after metering;

coating a release agent on a surface layer template, wherein the surface layer template comprises a surface layer flat template and a surface layer special-shaped template;

releasing surface layer materials in the surface layer stirrer to the surface of the surface layer template to obtain a surface layer, wherein the surface layer comprises a flat surface layer and a special-shaped surface layer;

the UHPC decorative plate comprises a UHPC embedded part decorative plate and a UHPC non-embedded part decorative plate;

when the UHPC embedded part decorative plate is manufactured, the UHPC structural plate is paved on the surface layer twice, and an embedded part is placed between the two layers of UHPC structural plates to obtain a UHPC embedded part decorative plate;

and when the UHPC non-embedded part decorative plate is manufactured, the UHPC structural plate is laid on the surface layer to obtain the UHPC non-embedded part decorative plate.

In some embodiments of the invention, n is 2, 3, 4, 5.

In some embodiments of the invention, the scrim comprises a fiberglass veil, a fiberglass scrim, a basalt fiber scrim, a polypropylene fiber scrim, a nylon fiber scrim.

In some embodiments of the present invention, the,

the structural layer manufacturing material comprises: 800kg of cement, 200kg of special white silica micropowder, 200kg of microbeads, 1100kg of texture quartz sand, 10kg of high-efficiency water reducing agent, 1kg of defoaming agent, 5kg of organic fiber and 155kg of water;

the surface layer manufacturing material comprises: 800kg of cement, 200kg of special white silica micropowder, 200kg of microbeads, 1100kg of texture quartz sand, 3kg of a high-efficiency water reducing agent, 0.8kg of a defoaming agent, 10kg of polypropylene emulsion and 190kg of water.

In some embodiments of the invention, the specially-made white silicon micro powder is silicon micro powder which is subjected to high-temperature burning screening, and the particle size is 0.1-10 μm.

In some embodiments of the present invention, the particle size of the microbeads is 30 to 60 μm.

In some embodiments of the invention, the texture quartz sand comprises two particle sizes, the two particle sizes of the texture quartz sand are 20-40 meshes and 40-80 meshes respectively, and the mass ratio of the 20-40 meshes texture quartz sand to the 40-80 meshes texture quartz sand is 1: 1.

In some embodiments of the invention, the organic fibers have a diameter of 45 μm to 0.18mm and a length of 6mm to 15 mm.

In some embodiments of the invention, the mesh diameter of the mesh cloth is 8mm, and the national standard 130g mesh cloth is 10 mm. According to the technical scheme, the invention at least comprises the following beneficial effects:

according to the invention, through the spherical shapes of specially-made white silicon micro powder, micro beads and textured quartz sand, relative sliding among particles can be generated more easily, faster fluidity and larger expansion degree can be ensured under the condition of low water-binder ratio, the particles are not easy to generate bubbles in the process of stirring without edges and corners, the generated large bubbles can be discharged to the surface in a short time, the compactness of a product material structure system is increased, and the strength of the product material structure system is further increased; the addition of the organic fiber can effectively prevent the generation of micro cracks and the bursting of the structural layer at high temperature (above 600 ℃); the multilayer grid cloth is easier to approach the surface during construction, so that a toughening effect can be better achieved, and in addition, the addition of organic fibers and the like can be reduced due to the addition of the grid cloth, so that the stirring difficulty is reduced; the density and the flatness of the UHPC structural plate can be obviously improved by a layered rolling forming mode, and further the surface effect is stable.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

Fig. 1 is a flow chart of a method for manufacturing a UHPC decorative board according to an embodiment of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention is clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a UHPC decorative plate with low viscosity, which comprises a structural layer and a surface layer.

Specifically, the material for manufacturing the structural layer comprises: white cement 30-40 wt.%; 5-10 wt.% of specially-made white silicon micropowder, 5-10 wt.% of microbeads, 40-45 wt.% of texture quartz sand, 0.2-0.5 wt.% of high-efficiency water reducing agent, 0.02-0.5 wt.% of defoaming agent, 0.1-0.4 wt.% of organic fibers and the balance of water, and n layers of grid cloth, wherein n can be 1, 2, 3, 4 or 5; the surface layer manufacturing material comprises: white cement 30-40 wt.%; 5-10 wt.% of specially-made white silica micropowder, 5-10 wt.% of microbeads, 40-45 wt.% of texture quartz sand, 0.1-0.5 wt.% of high-efficiency water reducing agent, 0.02-0.5 wt.% of defoaming agent, 0.2-0.6 wt.% of acrylic emulsion, 0.1-0.4 wt.% of organic fiber and the balance of water.

The specially-made white silicon micro powder is prepared by high-temperature burning and screening of silicon micro powder, wherein micro cracks generated during surface ball milling of the silicon micro powder are reduced by high-temperature burning, and edges and corners are rounded. The particle size of the special white silicon micro powder can be 0.1-10 μm. Preferably, the particle size of the specially-made white silicon micro powder can be 2 micrometers and D50, and the particles with the particle size can fill gaps among cement and micro-bead particles, so that the water consumption is reduced. The addition of the specially-made white silicon micro powder enables relative sliding to be easily generated among raw material particles, faster fluidity and larger expansion degree can be guaranteed under the condition of low water-to-gel ratio, the particles are not provided with edges and corners and are not easy to generate bubbles in the stirring process, the generated large bubbles can be discharged to the surface in a short time, the compactness of a product material structure system is increased, and the strength of the product material structure system is further increased; in addition, the micro-beads can replace cement, reduce hydration heat and increase dimensional stability.

The addition of the micro-beads can block a flocculation structure formed by cement quickly and prolong the surface skinning time, generally, UHPC (ultra high performance concrete) can lose water on the surface to form a layer of hard skin after being exposed in the air for about 10min at the temperature of more than 25 ℃, and the skinning time is prolonged to 30min after the micro-beads are added. Moreover, the spherical form of the microbeads can enable particles to slide relatively easily, faster fluidity and larger expansion degree can be guaranteed under the condition of low water-to-gel ratio, the particles are not easy to generate bubbles in the process of stirring without edges and corners, and the generated large bubbles can be discharged to the surface in a short time, so that the compactness of a product material structure system is increased, and the strength of the product material structure system is further increased; in addition, the micro-beads can replace cement, reduce hydration heat and increase dimensional stability. In some embodiments of the present invention, the particle size of the microbeads may be 30 to 60 μm, and preferably, the particle size of the microbeads may be 45 μm.

The texture quartz sand is spherical, so that relative sliding can be easily generated between particles, the addition of the texture quartz sand ensures that quick flowing and large expansion degree can be ensured under the condition of low water-gel ratio, the particles are not provided with edges and corners and are not easy to generate bubbles in the stirring process, the generated bubbles can be discharged to the surface in a short time, the compactness of a product material structure system is increased, and the strength of the product material structure system is further increased. In some embodiments of the invention, the texture quartz sand comprises two particle sizes, the two particle sizes of the texture quartz sand are 20-40 meshes and 40-80 meshes respectively, the mass ratio of the texture quartz sand of 20-40 meshes to the texture quartz sand of 40-80 meshes is 1:1, and the minimum compactness of the texture quartz sand with different particle sizes under the condition of 1:1 mass mixing is determined to be the highest under the condition of the same mass and volume through the closest packing test.

The high-efficiency water reducing agent can be a polycarboxylic acid liquid water reducing agent, and the concentration can be 45%. The high-efficiency water reducing agent has high water reducing rate, the high-efficiency water reducing agent is selected from water reducing agents which are easy to generate bleeding and bottom grabbing in common concrete, the water film thickness of the coated particles can be reduced in UHPC, the water consumption is reduced, the slurry compactness is improved, and the strength is increased. The defoaming agent can be a modified organic silicon defoaming agent, the defoaming agent can effectively reduce the formation of bubbles during stirring, particularly, the bubbles with larger diameters are broken to form beneficial bubbles with diameters less than 10 mu m, the bubbles are easier to discharge to the surface and break, a small amount of water is taken out, and the surface skinning time is slowed down. The low viscosity is realized through material property optimization and the combination of a water reducing agent and a defoaming agent.

The organic fiber comprises polypropylene fiber, polyacrylonitrile fiber, polyformaldehyde fiber and polyvinyl alcohol fiber. The addition of the organic fiber mainly prevents the generation of micro cracks and prevents the structural layer from bursting at high temperature (above 600 ℃). In some embodiments of the present invention, the diameter of the organic fiber may be 45 μm to 0.18mm, the length may be 6mm to 15mm, the selection of the organic fiber is determined according to the thickness of the structural layer formed by single casting and the decorative effect, the selection of the fiber with the diameter of 0.1mm and the length of 6mm can make the crack resistance and explosion resistance meet the requirement of high temperature for 3h, and the flowability of the material is not affected.

And n layers of the mesh cloth, wherein n can be 1, 2, 3, 4 and 5. Preferably, the laid mesh is 5 layers. The amount of the 5 layers of the grid cloth which is laid is 15 percent of the fiber content, and the 5 layers of the grid cloth can be more easily close to the surface during construction to better play a toughening role. In some embodiments of the invention, the mesh diameter of the mesh cloth is 8mm, the national standard 130g of mesh cloth is 10mm, the crack spacing is increased when the mesh cloth is too large, the breaking strength is reduced by 10% when the same mass and the same number of layers are adopted, large particles in UHPC with too small mesh cloth are difficult to pass through, and the layering damage phenomenon can be generated when the UHPC is damaged.

In some embodiments of the invention, 0-3% of ferric oxide toner and 0-50% of coarse aggregate can be added into the surface layer according to the decoration requirement.

In some embodiments of the invention, the structural layer making material comprises: 800kg of cement, 200kg of special white silica micropowder, 200kg of microbeads, 1100kg of texture quartz sand, 10kg of high-efficiency water reducing agent, 1kg of defoaming agent, 5kg of organic fibers and 155kg of water.

In some embodiments of the invention, the facing material comprises: 800kg of cement, 200kg of special white silica micropowder, 200kg of microbeads, 1100kg of texture quartz sand, 3kg of a high-efficiency water reducing agent, 0.8kg of a defoaming agent, 10kg of polypropylene emulsion, 190kg of water and 5kg of organic fibers.

As shown in fig. 1, the method for manufacturing a UHPC decorative board provided by the invention comprises the following steps:

the manufacturing steps of the structural layer comprise:

and S1, quantitatively releasing the structural layer manufacturing material into a stirrer after metering.

The screw conveyer conveys the UHPC decorative board structural layer materials to a metering scale for metering, and the metered materials are quantitatively released into a stirrer. The mixer is one at least, and a plurality of mixers are arranged along the conveyer belt in proper order, and a plurality of mixers are in order to satisfy the demand of reinforced many times. For convenience of description, the plurality of mixers are respectively named as a first mixer, a second mixer, a third mixer, and the like.

And S2, coating a release agent on the structural layer template.

And the structural layer template is adsorbed and conveyed to the position of an oiling machine by the plate feeding machine, and the structural layer template is coated with a release agent by the oiling machine. Further, in some embodiments of the present application, when the structural layer template coated with the release agent is a structural layer flat template, the structural layer flat template is moved forward into the forming unit by the conveyor belt. It should be noted that, when the structural layer template is the structural layer special-shaped template, the structural layer template does not enter the assembly line forming unit, and in the roll forming step, the structural layer template is formed by manual roll forming, and can not enter the forming unit.

S3, stirring the structural layer materials by a stirrer, and spreading the uniformly mixed structural layer materials on a structural layer template to obtain a layer of material plate.

In order to distinguish a stirrer used later, the stirrer can be called a first stirrer, namely, the first stirrer stirs the structural layer materials, the uniformly mixed structural layer materials are released into a hopper of a forming machine, and the structural layer materials are released into a forming unit by opening a valve of the hopper. And (4) spreading the structural layer material on the structural layer template in the forming unit to obtain a layer of material plate.

And S4, laying mesh cloth on the layer of material plate to obtain a layer of mesh cloth plate.

In order to distinguish between the layers of scrim, the scrim laid here may be referred to as a first layer of scrim, i.e. a first layer of scrim is laid on a layer of material sheet, resulting in a layer of scrim sheet. The grid cloth comprises a glass fiber surface felt, a glass fiber grid cloth, a basalt fiber grid cloth, a polypropylene fiber grid cloth and a nylon fiber grid cloth. The mesh diameter of the mesh cloth is 5mm, the national standard 80g mesh cloth is 10mm, the crack spacing of the overlarge mesh cloth is increased when the mesh cloth is stressed, the breaking strength is reduced by 10% when the same mass is used, large particles in UHPC with the undersized mesh cloth are difficult to pass through, and the layering damage phenomenon can be generated when the UHPC is damaged.

S5, rolling and forming the grid cloth plate layer by a forming roller to obtain a first UHPC structural plate, wherein the thickness of the first UHPC structural plate is 5-10 mm.

The roll forming may be performed on a line in the forming unit, or may be performed manually. Specifically, when the grid cloth plate is a flat plate, the grid cloth plate can be rolled and molded in a forming machine set on an assembly line, and when the grid cloth plate is a special-shaped plate, the grid cloth plate can be rolled and molded manually.

And S6, repeatedly, spreading the structural layer material on the first UHPC structural plate by a stirrer, then paving the gridding cloth, and then rolling and molding by a molding pair roller to finally obtain the UHPC structural plate, wherein the UHPC structural plate comprises n layers of gridding cloth.

Specifically, a structural layer material is spread on the first UHPC structural plate by a second stirrer to obtain a two-layer material plate; laying a second layer of grid cloth on the second layer of material plate to obtain a second layer of grid cloth plate; and rolling and forming the two layers of grid cloth plates by a forming roller to obtain a second UHPC structural plate, wherein the thickness of the second UHPC structural plate is 10-20 mm, namely the thickness of the second UHPC structural plate is 5-10 mm thicker than that of the first UHPC structural plate. Repeatedly, the structural layer material is spread by a stirrer to the UHPC structural plate, then a layer of gridding cloth is laid, and then the UHPC structural plate is formed by rolling and pressing by a forming roller, so that the UHPC structural plate is finally obtained, wherein the UHPC structural plate comprises n layers of gridding cloth, n can be 2, 3, 4 and 5, and preferably n is 5. In some embodiments of the present application, UHPC structural panels may also be subjected to slitting, curing, demolding and surface treatment.

The manufacturing steps of the UHPC decorative plate are as follows:

and S7, quantitatively releasing the surface layer manufacturing material into a surface layer stirrer after metering.

S8, coating a release agent on the surface layer template, wherein the surface layer template comprises a surface layer flat template and a surface layer special-shaped template.

S9, releasing the surface layer material in the surface layer stirrer to the surface of the surface layer template to obtain a surface layer, wherein the surface layer comprises a flat plate surface layer and a special-shaped surface layer.

Specifically, the surface course material in the surface course agitator releases the surface course template surface, include, the surface course material in the surface course agitator sprays the surface course template surface through the spray gun, or the surface course material in the surface course agitator pours the surface course template surface. It should be noted that if the spraying process is used to make the surface layer, a proper amount of glass fiber is also added, for example, 800kg of cement, 200kg of special white silica powder, 200kg of micro-beads, 1100kg of texture quartz sand, 3kg of high-efficiency water reducing agent, 0.8kg of defoaming agent, 10kg of polypropylene emulsion, and 112kg of glass fiber is added when 190kg of water is used. If a pouring process is adopted, a proper amount of organic fibers, such as polypropylene fibers, are also required to be added, for example, the mixture ratio is 800kg of cement, 200kg of special white silica micropowder, 200kg of microbeads, 1100kg of texture quartz sand, 3kg of high-efficiency water reducing agent, 0.8kg of defoaming agent, 10kg of polypropylene emulsion and 190kg of water, and 10kg of glass fibers are required to be added.

The UHPC decorative plate comprises a UHPC embedded part decorative plate and a UHPC non-embedded part decorative plate, and the method for manufacturing the UHPC embedded part decorative plate and the UHPC non-embedded part decorative plate is different, such as step S10 and step S11.

S10, when manufacturing the UHPC embedded part decorative plate, paving the UHPC structural plate on the surface layer twice, and placing the embedded part between the two UHPC structural plates to obtain the UHPC embedded part decorative plate.

After a single UHPC structural plate is formed (a single layer or multiple layers of UHPC structural plates can be formed), coating a UHPC structural layer material between two UHPC structural plates by about 2-3mm, placing an embedded part between the two UHPC structural plates, and rolling and compacting the two layers by using a press roll after the two layers are laid to obtain the UHPC embedded part decorative plate. The built-in fitting is for fixing to the outer wall or installation back of the body fossil fragments in the future, and the purpose is for making things convenient for the later stage installation.

S11, when the UHPC non-embedded part decorative plate is manufactured, the UHPC structural plate is laid on the surface layer and rolled to be compact, and the UHPC non-embedded part decorative plate is obtained.

It should be noted that, when the UHPC decorative plate is manufactured using the surface layer flat template, the "roll compacting" step in the steps S10 and S11 is performed by automatic rolling using a press roll on the molding line. However, when the UHPC decorative profile sheet is manufactured using the surface layer profile sheet, the "roll compaction" step in steps S10 and S11 is performed by manual rolling using a press roll.

Example 1

1. Purpose of the experiment: comparing the influence of different micro silicon powders on the performance of the UHPC decorative sheet

2. And (3) test operation:

a. manufacture of structural layer

Mixing and stirring white cement, special white silica micro powder or white silica micro powder with different particle sizes, texture quartz sand, water, a high-efficiency water reducing agent and a defoaming agent according to a proportion to obtain mixed slurry.

b. Manufacture of surface layer

The above experimental operations were all the same except for the use of the white silica powder.

3. And (3) performance testing:

TABLE 1 comparison of different white silicas

It should be noted that the fluidity test and the compressive strength test were conducted on the mixed slurry prepared before the line forming, and therefore the plate body was not prepared in the test operation part. In addition, the fluidity is determined according to the fluidity of the mortar, and the jumping table does not jump; the compressive strength test is also in accordance with the mortar strength test standard.

As is clear from Table 1, the UHPC decorative sheet obtained when the special white silica powder was used was characterized by good fluidity and high strength.

Example 2

1. The purpose of the experiment is as follows: comparing the influence of different special white silicon micro powder mixing amounts on the performance of the UHPC decorative plate

2. And (3) test operation: compared with the operation steps of the example 1, the other operations are the same except that the mixing amount of the special white silicon micro powder is different.

3. And (3) performance testing:

TABLE 2 comparison of different amounts of fine white silica powder

It should be noted that the fluidity test and the compressive strength test were conducted on the mixed slurry prepared before the line forming, and therefore, the plate body was not prepared in the test operation part. In addition, the fluidity is determined according to the fluidity of the mortar, and the jumping table does not jump; the compressive strength test is also in accordance with the mortar strength test standard.

As is clear from Table 2, the UHPC decorative sheet obtained with the white silica fine powder added in an amount of 200kg had high strength and good fluidity.

Example 3

1. Purpose of the experiment: comparing the influence of different micro-bead mixing amounts on the performance of UHPC decorative plate

2. And (3) test operation: compared with the operation steps of the example 1, the operation is the same except that the mixing amount of the micro-beads or the first-grade fly ash is different.

3. And (3) performance testing:

TABLE 3 comparison of different microbead contents

As is clear from Table 3, the UHPC decorative sheet obtained with the addition of 200kg of microbeads had high strength and good fluidity, and the strength and fluidity of the UHPC decorative sheet were significantly inferior to those of the microbeads when the same 200kg of first-class fly ash was used.

Example 4

1. Purpose of the experiment: comparing the influence of different layers of grid cloth on the performance of the UHPC decorative board

2. And (3) test operation:

a. manufacture of structural layer

Mixing and stirring white cement, special white silicon micro powder, micro beads, texture quartz sand, water, a high-efficiency water reducing agent and a defoaming agent according to a proportion; and spreading the materials, paving a grid cloth, and rolling and forming to obtain a structural layer.

b. Manufacture of surface layer

Mixing and stirring white cement, special white silicon micro powder, micro beads, texture quartz sand, water, a high-efficiency water reducing agent and a defoaming agent according to a proportion; and obtaining the surface layer.

Manufacture of UHPC decorative board

Spraying or pouring a surface layer on the surface of the shaping mold; uniformly laying a structural layer on a surface layer of the shaping mold, and placing the embedded part; and (5) curing and demolding.

It should be noted that the above experimental operations are briefly described, and the specific operation steps are the same as steps S1 to S11 of making UHPC decorative board, and are not described repeatedly here.

The experimental operations are all the same except for the different number of layers of the mesh cloth.

3. And (3) performance testing:

table 4 comparison of the number of layers of the mesh cloth

As can be seen from Table 4, the UHPC decorative sheet obtained when the number of layers of the mesh cloth was 5 was the greatest in flexural strength.

Example 5

1. Purpose of the experiment: comparing the influence of different mesh cloth holes on the performance of UHPC decorative plate

2. And (3) test operation: the procedure was identical except for the use of scrim holes, as compared to the procedure of example 4.

3. And (4) performance testing:

TABLE 5 different scrim perforation comparison

As can be seen from Table 5, the UHPC decorative sheet obtained when the mesh size of the mesh cloth was 8mm had the smallest crack spacing and the largest flexural strength.

Example 6

1. Purpose of the experiment: comparing the influence of different organic fiber mixing amounts on the performance of the UHPC decorative board

2. And (3) test operation: the procedure was identical to that of example 4 except that the amount of organic fibers was different.

3. And (3) performance testing:

TABLE 6 comparison of different organic fiber contents

As can be seen from Table 6, the UHPC decorative sheet obtained when the organic fiber content is 5kg has the advantages of cost saving and anti-explosion effect.

It should be noted that the test methods described in the above embodiments are conventional methods unless otherwise specified, and the test reagents and materials are commercially available without otherwise specified.

The foregoing summary, as well as the included examples, of preferred embodiments of the present invention will be more readily understood by reference to the following detailed description of the preferred embodiments of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.

The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, this phrase shall render the claim closed except for the materials described except for those materials normally associated therewith. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.

When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.

The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.

Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.

In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

Claims

1. A UHPC decorative plate is characterized in that the UHPC decorative plate comprises a structural layer and a surface layer;

the manufacturing method of the structural layer comprises the following steps:

repeatedly, the structural layer material is spread on the first UHPC structural plate by the stirrer, then the gridding cloth is laid, and then the UHPC structural plate is formed by forming and rolling a roller, and finally the UHPC structural plate is obtained, wherein the UHPC structural plate comprises n layers of gridding cloth.

2. The UHPC trim panel of claim 1, wherein the UHPC trim panel comprises a UHPC pre-embedded part trim panel and a UHPC non-pre-embedded part trim panel, and the manufacturing method of the UHPC trim panel comprises the following steps:

releasing the surface layer material in the surface layer stirrer to the surface of the surface layer template to obtain a surface layer;

when the UHPC embedded part decorative plate is manufactured, the UHPC structural plate is paved on the surface layer twice, and an embedded part is placed between the two layers of UHPC structural plates to obtain the UHPC embedded part decorative plate;

3. A UHPC decorative panel according to claim 1 or 2, characterised in that n is 2, 3, 4, 5.

4. A UHPC decorative panel according to claim 1 or 2 wherein the scrim comprises a fiberglass veil, a fiberglass scrim, a basalt fiber scrim, a polypropylene fiber scrim, a nylon fiber scrim.

5. A UHPC trim panel according to claim 1,

6. A UHPC decorative sheet according to claim 1 or 5, wherein the purpose-made white silica micropowder is silica micropowder which is subjected to high temperature burning screening, and the particle size is 0.1-10 μm.

7. A UHPC decorative sheet according to claim 1 or 5 wherein the particle size of the beads is 30 to 60 μm.

8. A UHPC decorative plate according to claim 1 or 5, wherein the texture quartz sand comprises two particle sizes, the two particle sizes of the texture quartz sand are 20-40 meshes and 40-80 meshes respectively, and the mass ratio of the texture quartz sand of 20-40 meshes to the texture quartz sand of 40-80 meshes is 1: 1.

9. A UHPC decorative board according to claim 1 or 5, characterized in that the organic fibres have a diameter of 45 μm-0.18mm and a length of 6mm-15 mm.

10. A UHPC decorative panel according to claim 1 or 5, wherein the mesh diameter of the mesh cloth is 8mm, the national standard 130g mesh cloth is 10 mm.