CN111393115A - Press-formed colorful fair-faced concrete slab and preparation method thereof - Google Patents
Press-formed colorful fair-faced concrete slab and preparation method thereof Download PDFInfo
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- CN111393115A CN111393115A CN202010396716.3A CN202010396716A CN111393115A CN 111393115 A CN111393115 A CN 111393115A CN 202010396716 A CN202010396716 A CN 202010396716A CN 111393115 A CN111393115 A CN 111393115A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/093—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/022—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form combined with vibrating or jolting
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
- E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
- E04F13/14—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements stone or stone-like materials, e.g. ceramics concrete; of glass or with an outer layer of stone or stone-like materials or glass
- E04F13/141—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements stone or stone-like materials, e.g. ceramics concrete; of glass or with an outer layer of stone or stone-like materials or glass with an outer layer of concrete
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/80—Optical properties, e.g. transparency or reflexibility
- C04B2111/82—Coloured materials
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a press-formed colored fair-faced concrete slab and a preparation method thereof, wherein the fair-faced concrete slab comprises the following raw materials in percentage by mass: 22 to 35 percent of cement, 48 to 63 percent of quartz sand, 0.16 to 0.27 percent of rubber powder, 0 to 0.90 percent of pigment and 13.9 to 15.8 percent of water. The invention greatly improves the production efficiency by vibration pressing molding, does not need to use redundant additives, and correspondingly reduces the production cost; the clear water concrete does not need to be coated with a surface protective agent, and the polluted damaged surface can be directly polished and polished to restore the natural color; the invention not only can be used for manufacturing the plain concrete original-color plate, but also can be added with various pigments to manufacture the colorful plain concrete plates with different colors, so that the decorative effect of the plain concrete plates is better.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a press-formed colored fair-faced concrete slab and a preparation method thereof.
Background
The fair-faced concrete slab is also called as a decorative concrete slab, so the fair-faced concrete slab has a name of having a decorative effect, directly adopts the natural surface effect of concrete as a decorative surface, does not make any external decoration, has a flat and smooth surface and uniform color, and is very natural and solemn. The clear water concrete is the highest expression form in concrete materials and has simple, fruitless, natural and stable appearance lingering charm. The bare concrete slab is mainly used in the outer and inner spaces of artistic places, commercial places, office places, entertainment and leisure places, sports places, families, schools, exhibition halls and the like.
The traditional fair-faced concrete slab belongs to one-time casting molding, and only one layer or two layers of transparent protective agents are coated on the surface of the traditional fair-faced concrete slab, so that the surface of the traditional fair-faced concrete slab displays the color of concrete cement paste. In China, researches on the as-cast finish concrete plates formed by pressing are few, the protective agent on the surfaces of the common as-cast finish concrete plates is easy to age and fall off along with the time extension, the surfaces of the as-cast finish concrete plates cannot be polished and polished to restore the natural color after being damaged, and the repairing effect of various as-cast finish concrete repairing agents cannot completely achieve the original color and texture of the surfaces of the as-cast finish concrete plates.
Disclosure of Invention
The invention provides a press-formed colored fair-faced concrete slab and a preparation method thereof, and aims to solve the problems that the cast-formed fair-faced concrete slab is low in production efficiency, the plain-faced concrete slab is single in color, a surface protective agent of the plain-faced concrete slab is easy to age and fall off, the repairing effect of a fair-faced concrete repairing agent is poor after the surface of the plain-faced concrete is damaged, and the plain-faced concrete surface cannot be polished and restored to the natural color.
In order to solve the technical problems, the invention adopts the following technical scheme:
a press-formed colorful fair-faced concrete slab comprises the following raw materials in percentage by mass: 22 to 35 percent of cement, 48 to 63 percent of quartz sand, 0.16 to 0.27 percent of rubber powder, 0 to 0.90 percent of pigment and 13.9 to 15.8 percent of water;
the cement is ordinary portland cement or white portland cement;
the quartz sand is a mixture of quartz sand with three specifications of 48-80 meshes, 80-120 meshes and 120-300 meshes, and the quartz sand comprises the following components in percentage by mass: 46-62% of 40-80 mesh quartz sand, 30-44% of 80-120 mesh quartz sand and 5-14% of 300 mesh quartz sand;
the rubber powder is re-dispersible latex powder;
the pigment is an inorganic iron oxide pigment.
A preparation method of a press-formed colorful fair-faced concrete slab comprises the following steps:
firstly, placing cement, quartz sand, rubber powder and pigment in a stirrer for stirring and premixing, then adding water into the stirrer for secondary stirring, and obtaining a uniform mixture after stirring;
placing the mixture in a mould, performing vibration and pressure pressing by using a press, and discharging redundant water by using negative pressure;
directly putting the formed wool with a tray into a steam curing box, wherein the environmental temperature of the steam curing box is 40-60 ℃, and the humidity is more than or equal to 95%;
curing in a steam curing box for 24 hours, demolding, and then carrying out closed spraying curing, wherein the temperature of the curing environment is controlled to be 15-35 ℃, the humidity is controlled to be more than 95%, and the curing time is 14-28 days;
and grinding and polishing the product after maintenance is finished, and adhering a fiber net on the back surface for reinforcement to obtain a finished product.
Compared with the prior art, the invention has the following advantages:
(1) the clean water concrete slab is formed by vibration pressing, compared with pouring forming, the production efficiency is greatly improved, no extra additive is needed, and the production cost is correspondingly reduced.
(2) The clean water concrete slab does not need to be coated with a surface protective agent, and the polluted and damaged surface can be directly polished and polished to restore the natural color. The quartz sand with the maximum grain diameter of 48-80 meshes is arranged in the aggregate of the fair-faced concrete slab, and the polished surface of the fair-faced concrete slab still shows the original color of the concrete, so that the fair-faced concrete slab can be directly polished and polished to form the effect consistent with the original surface after being polluted or damaged.
(3) The fair-faced concrete slab not only can be used for manufacturing a fair-faced concrete primary color slab, but also can be added with various pigments to manufacture a colorful fair-faced concrete slab with different colors, so that the decorative effect of the fair-faced concrete slab is better, and the fair-faced concrete slab can be used for outer wall dry hanging and indoor wall surface, table surface and the like paving.
Detailed Description
In order to better understand the present invention, the following examples are further illustrative, but the present invention is not limited to the following examples.
Example 1
A press-formed colorful fair-faced concrete slab comprises the following raw materials in percentage by mass: 33.6 percent of cement, 50.4 percent of quartz sand, 0.17 percent of rubber powder, 0.67 percent of pigment and 15.1 percent of water.
In this embodiment, the cement is white portland cement; the quartz sand is a mixture of quartz sand with three specifications of 48-80 meshes, 80-120 meshes and 120-300 meshes, and the quartz sand comprises the following components in percentage by mass: 58 percent of quartz sand with 48-80 meshes, 32 percent of quartz sand with 80-120 meshes and 10 percent of quartz sand with 120-300 meshes; the rubber powder is re-dispersible latex powder; the pigment is a red iron oxide pigment.
The preparation method comprises the following steps:
firstly, placing cement, quartz sand, rubber powder and pigment in a stirrer for stirring and premixing, then adding water into the stirrer for secondary stirring, and obtaining a uniform mixture after stirring;
placing the mixture in a mould, performing vibration and pressure pressing by using a press, and discharging redundant water by using negative pressure;
directly putting the formed wool with a tray into a steam curing box, wherein the environmental temperature of the steam curing box is 40-60 ℃, and the humidity is more than or equal to 95%;
curing in a steam curing box for 24 hours, demolding, and then carrying out closed spraying curing, wherein the temperature of the curing environment is controlled to be 15-35 ℃, the humidity is controlled to be more than 95%, and the curing time is 14-28 days;
and grinding and polishing the product after the maintenance is finished, and sticking a fiber net on the back surface for reinforcement to obtain the finished red fair-faced concrete slab.
Example 2
A press-formed colorful fair-faced concrete slab comprises the following raw materials in percentage by mass: 28.3% of cement, 56.5% of quartz sand, 0.20% of rubber powder, 0.28% of pigment and 14.7% of water.
In this embodiment, the cement is white portland cement; the quartz sand is a mixture of quartz sand with three specifications of 48-80 meshes, 80-120 meshes and 120-300 meshes, and the quartz sand comprises the following components in percentage by mass: 54 percent of quartz sand with 48-80 meshes, 38 percent of quartz sand with 80-120 meshes and 8 percent of quartz sand with 120-300 meshes; the rubber powder is re-dispersible latex powder; the pigment is a blue iron oxide pigment.
The preparation method comprises the following steps:
firstly, placing cement, quartz sand, rubber powder and pigment in a stirrer for stirring and premixing, then adding water into the stirrer for secondary stirring, and obtaining a uniform mixture after stirring;
placing the mixture in a mould, performing vibration and pressure pressing by using a press, and discharging redundant water by using negative pressure;
directly putting the formed wool with a tray into a steam curing box, wherein the environmental temperature of the steam curing box is 40-60 ℃, and the humidity is more than or equal to 95%;
curing in a steam curing box for 24 hours, demolding, and then carrying out closed spraying curing, wherein the temperature of the curing environment is controlled to be 15-35 ℃, the humidity is controlled to be more than 95%, and the curing time is 14-28 days;
and grinding and polishing the product after the maintenance is finished, and sticking a fiber net on the back surface for reinforcement to obtain the finished product of the blue fair-faced concrete slab.
Example 3
A press-formed colorful fair-faced concrete slab comprises the following raw materials in percentage by mass: 28.3% of cement, 56.5% of quartz sand, 0.20% of rubber powder, 0.28% of pigment and 14.7% of water.
In the embodiment, the cement is ordinary portland cement; the quartz sand is a mixture of quartz sand with three specifications of 48-80 meshes, 80-120 meshes and 120-300 meshes, and the quartz sand comprises the following components in percentage by mass: 48 percent of 48-80 mesh quartz sand, 40 percent of 80-120 mesh quartz sand and 12 percent of 120-300 mesh quartz sand; the rubber powder is re-dispersible latex powder; the pigment is a black iron oxide pigment.
The preparation method comprises the following steps:
firstly, placing cement, quartz sand, rubber powder and pigment in a stirrer for stirring and premixing, then adding water into the stirrer for secondary stirring, and obtaining a uniform mixture after stirring;
placing the mixture in a mould, performing vibration and pressure pressing by using a press, and discharging redundant water by using negative pressure;
directly putting the formed wool with a tray into a steam curing box, wherein the environmental temperature of the steam curing box is 40-60 ℃, and the humidity is more than or equal to 95%;
curing in a steam curing box for 24 hours, demolding, and then carrying out closed spraying curing, wherein the temperature of the curing environment is controlled to be 15-35 ℃, the humidity is controlled to be more than 95%, and the curing time is 14-28 days;
and grinding and polishing the product after the maintenance is finished, and sticking a fiber net on the back surface for reinforcement to obtain the finished product of the black fair-faced concrete slab.
Example 4
A press-formed colorful fair-faced concrete slab comprises the following raw materials in percentage by mass: 29.9% of cement, 53.9% of quartz sand, 0.18% of rubber powder, 0.45% of pigment and 14.7% of water.
In this embodiment, the cement is white portland cement; the quartz sand is a mixture of quartz sand with three specifications of 48-80 meshes, 80-120 meshes and 120-300 meshes, and the quartz sand comprises the following components in percentage by mass: 54 percent of quartz sand with 48-80 meshes, 40 percent of quartz sand with 80-120 meshes and 6 percent of quartz sand with 120-300 meshes; the rubber powder is re-dispersible latex powder; the pigment is a yellow iron oxide pigment.
The preparation method comprises the following steps:
firstly, placing cement, quartz sand, rubber powder and pigment in a stirrer for stirring and premixing, then adding water into the stirrer for secondary stirring, and obtaining a uniform mixture after stirring;
placing the mixture in a mould, performing vibration and pressure pressing by using a press, and discharging redundant water by using negative pressure;
directly putting the formed wool with a tray into a steam curing box, wherein the environmental temperature of the steam curing box is 40-60 ℃, and the humidity is more than or equal to 95%;
curing in a steam curing box for 24 hours, demolding, and then carrying out closed spraying curing, wherein the temperature of the curing environment is controlled to be 15-35 ℃, the humidity is controlled to be more than 95%, and the curing time is 14-28 days;
and grinding and polishing the product after the maintenance is finished, and sticking a fiber net on the back surface for reinforcement to obtain the finished product of the yellow fair-faced concrete slab.
Example 5
A press-formed colorful fair-faced concrete slab comprises the following raw materials in percentage by mass: 31.3% of cement, 53.2% of quartz sand, 0.25% of rubber powder and 15.3% of water.
In the embodiment, the cement is ordinary portland cement; the quartz sand is a mixture of quartz sand with three specifications of 48-80 meshes, 80-120 meshes and 120-300 meshes, and the quartz sand comprises the following components in percentage by mass: 48 percent of 48-80 mesh quartz sand, 40 percent of 80-120 mesh quartz sand and 12 percent of 120-300 mesh quartz sand; the rubber powder is re-dispersible latex powder.
The preparation method comprises the following steps:
firstly, placing cement, quartz sand and rubber powder in a stirrer for stirring and premixing, then adding water into the stirrer for secondary stirring, and obtaining a uniform mixture after stirring;
placing the mixture in a mould, performing vibration and pressure pressing by using a press, and discharging redundant water by using negative pressure;
directly putting the formed wool with a tray into a steam curing box, wherein the environmental temperature of the steam curing box is 40-60 ℃, and the humidity is more than or equal to 95%;
curing in a steam curing box for 24 hours, demolding, and then carrying out closed spraying curing, wherein the temperature of the curing environment is controlled to be 15-35 ℃, the humidity is controlled to be more than 95%, and the curing time is 14-28 days;
and grinding and polishing the product after the maintenance is finished, and adhering a fiber net on the back surface for reinforcement to obtain the finished product of the gray clear water concrete slab.
Compared with a pouring forming mode, the pressing forming mode of the color fair-faced concrete slab can improve the production efficiency of the plate, the pouring forming common fair-faced concrete slab contains coarse aggregate, and the problem of pollution damage cannot be solved by directly grinding and polishing, but the plain-faced concrete slab can directly grind and polish the pollution damage part to restore the original color and luster of the plate surface and brightness as new, so that the color fair-faced concrete slab can be applied to paving and pasting of outer wall dry hanging, indoor wall surfaces, table surfaces and the like.
The above description is only a preferred embodiment of the present invention, and it will be apparent to those skilled in the art that various modifications and changes may be made without departing from the inventive concept of the present invention, and these modifications and changes are within the scope of the present invention.
Claims (6)
1. The press-formed colored fair-faced concrete slab is characterized in that the fair-faced concrete slab comprises the following raw materials in percentage by mass: 22 to 35 percent of cement, 48 to 63 percent of quartz sand, 0.16 to 0.27 percent of rubber powder, 0 to 0.90 percent of pigment and 13.9 to 15.8 percent of water.
2. The press formed fair-colored concrete panel according to claim 1, wherein the cement is ordinary portland cement or white portland cement.
3. The press-formed colorful fair-faced concrete slab as claimed in claim 1, wherein the quartz sand is a mixture of quartz sand with three specifications of 48-80 mesh, 80-120 mesh and 120-300 mesh, and the quartz sand comprises the following components in percentage by mass: 46-62% of 40-80 mesh quartz sand, 30-44% of 80-120 mesh quartz sand and 5-14% of 300 mesh quartz sand.
4. The press-formed color-faced concrete panel according to claim 1, wherein the rubber powder is a re-dispersible latex powder.
5. The press formed fair-colored concrete panel according to claim 1, wherein the pigment is an inorganic iron oxide pigment.
6. A method of making press formed coloured bare concrete panels according to any one of claims 1 to 5 comprising the steps of:
firstly, placing cement, quartz sand, rubber powder and pigment in a stirrer for stirring and premixing, then adding water into the stirrer for secondary stirring, and obtaining a uniform mixture after stirring;
placing the mixture in a mould, performing vibration and pressure pressing by using a press, and discharging redundant water by using negative pressure;
directly putting the formed wool with a tray into a steam curing box, wherein the environmental temperature of the steam curing box is 40-60 ℃, and the humidity is more than or equal to 95%;
curing in a steam curing box for 24 hours, demolding, and then carrying out closed spraying curing, wherein the temperature of the curing environment is controlled to be 15-35 ℃, the humidity is controlled to be more than 95%, and the curing time is 14-28 days;
and grinding and polishing the product after maintenance is finished, and adhering a fiber net on the back surface for reinforcement to obtain a finished product.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010396716.3A CN111393115A (en) | 2020-05-12 | 2020-05-12 | Press-formed colorful fair-faced concrete slab and preparation method thereof |
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| CN202010396716.3A CN111393115A (en) | 2020-05-12 | 2020-05-12 | Press-formed colorful fair-faced concrete slab and preparation method thereof |
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Cited By (2)
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| CN113045256A (en) * | 2021-04-23 | 2021-06-29 | 中建七局第四建筑有限公司 | Manufacturing process of clean water concrete |
| CN115108787A (en) * | 2022-07-21 | 2022-09-27 | 苏亿发 | Colored fair-faced concrete for major engineering projects and preparation method thereof |
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| CN108756225A (en) * | 2018-04-05 | 2018-11-06 | 中启胶建集团有限公司 | Decorate the seamless spiral paper matrix plate construction of fair-faced concrete cylindrical |
| CN109354952A (en) * | 2018-09-14 | 2019-02-19 | 重庆建工建材物流有限公司 | A kind of surface treating agent for clear-water concrete |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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