CN113582594A - Alkali-activated sudden thermal cracking resistant inorganic artificial stone plate and preparation method thereof - Google Patents
Alkali-activated sudden thermal cracking resistant inorganic artificial stone plate and preparation method thereof Download PDFInfo
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- CN113582594A CN113582594A CN202110907339.XA CN202110907339A CN113582594A CN 113582594 A CN113582594 A CN 113582594A CN 202110907339 A CN202110907339 A CN 202110907339A CN 113582594 A CN113582594 A CN 113582594A
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- alkali
- artificial stone
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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
- C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
-
- 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
-
- 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
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
-
- 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
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (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 an alkali-activated sudden thermal cracking resistant inorganic artificial stone plate which is prepared from an alkali-activated cementing material, inorganic powder, aggregate, an activator, a blending agent and a water reducing agent. The alkali-activated sudden thermal cracking resistant inorganic artificial stone slab prepared by the preparation method provided by the invention does not crack after being tested for more than 25 minutes on a hot table at 250 ℃, has the breaking strength higher than 12MPa and the Mohs hardness higher than 5, and has a very high application prospect in the fields of inorganic artificial stone table panels and the like. The inorganic artificial stone disclosed by the invention is simple in preparation process, low in operation difficulty, low in energy consumption, good in product performance and suitable for wide industrial popularization.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to an alkali-activated shock-thermal-cracking-resistant inorganic artificial stone plate and a preparation method thereof.
Background
The inorganic artificial stone is developed on the basis of the traditional artificial stone, adopts inorganic materials as an adhesive and uses calcium carbonate aggregate, quartz aggregate and the like as filling materials. Compared with the organic artificial stone, the inorganic artificial stone has obvious improvement in the aspects of safety, environmental protection, weather resistance, wear resistance and the like due to the use of the inorganic adhesive, has unique aesthetic feeling in texture and good decorative performance, and is gradually accepted and loved by the public in recent years.
In the production process of the inorganic artificial stone plate, cement is generally used as a cementing material, which inevitably causes the plate to have the defects of high brittleness and poor toughness, and the plate is easy to crack when being subjected to sudden heat, thereby seriously restricting the application scene of the plate. Therefore, a new inorganic artificial stone slab is needed, which has the advantages of environmental protection and the like and has good anti-thermal shock cracking performance.
Disclosure of Invention
The invention aims to solve the problems, provides an alkali-activated sudden-heat-cracking-resistant inorganic artificial stone plate and solves the problem that a common inorganic artificial stone plate is easy to crack due to sudden heat.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
an alkali-activated sudden thermal cracking resistant inorganic artificial stone plate is prepared from the following raw materials in parts by weight:
15-50 parts of alkali-activated cementing material, 1-20 parts of powder, 40-80 parts of aggregate, 1-5 parts of activator, 5-15 parts of blender and 0-2 parts of water reducer.
Preferably, the alkali-activated cementing material is one or more of slag, fly ash, silica fume, aluminum silicate, red mud, phosphorous slag and coal gangue, and the particle size of the alkali-activated cementing material is 200-10000 meshes.
Preferably, the powder material is one or a mixture of limestone, quartz sand, calcium powder, granite powder, quartz powder and cordierite powder, and the particle size of the powder material is 140-10000 meshes.
Preferably, the aggregate is one or more of quartz, granite, cordierite, mullite and fused silica sand; the particle size of the aggregate is 0.1-15 mm.
Preferably, the activator is one or more of sodium hydroxide, potassium hydroxide and sodium silicate.
Preferably, the blending agent is water and/or a polyurethane emulsion.
Preferably, the water reducing agent is a naphthalene water reducing agent and/or a polycarboxylic acid water reducing agent.
The invention also provides a preparation method of the plate, which comprises the following steps:
(1) molding: placing all the raw materials in corresponding weight parts in a stirrer, fully stirring, pouring into a mold, and performing vibration molding or press molding by using a plate pressing machine;
(2) and (5) maintenance: placing the formed plate in a steam curing box, curing for a certain time, taking out and placing to normal temperature;
(3) polishing: and polishing the maintained plate to obtain the steel plate.
Preferably, the temperature in the steam curing box in the step (2) is controlled to be 60-120 ℃, and the curing time is 12-72 h.
In conclusion, due to the adoption of the technical scheme, compared with the inorganic artificial stone plate prepared by the existing method, the method has the beneficial effects that:
(1) the alkali-activated shock thermal cracking resistant inorganic artificial stone slab prepared by the invention does not crack after being tested for more than 20 minutes on a hot table at 250 ℃, has the breaking strength higher than 12MPa and the Mohs hardness higher than 5, and has very high application prospect in the fields of inorganic artificial stone table panels and the like.
(2) According to the invention, the alkali-activated cementing material is used as the adhesive, so that the toughness of the inorganic artificial stone plate is effectively improved, and the sudden thermal cracking resistance of the plate is improved.
(3) The inorganic powder added in the raw materials can improve the grain composition of the plate, effectively improve the breaking strength of the plate and further improve the anti-flash cracking performance of the plate.
(4) The inorganic artificial stone has the advantages of simple production process, low operation difficulty, low energy consumption and good product performance, and is suitable for wide popularization of industrialization.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Example 1
An alkali-activated sudden thermal cracking resistant inorganic artificial stone plate is prepared by the following steps:
(0) preparing materials: taking 100kg of 10000-mesh mineral powder, 50kg of 8000-mesh silica fume, 200kg of 140-320-mesh quartz powder, 150kg of 0.1-0.6mm quartz aggregate, 337kg of 0.6-2.5mm mullite aggregate, 3kg of sodium hydroxide, 10kg of sodium silicate, 120kg of water, 20kg of polyurethane emulsion and 10kg of polycarboxylic acid water reducer;
(1) molding: placing all the raw materials in a stirrer, fully stirring, and then pressing and forming to obtain a plate;
(2) and (5) maintenance: curing the plate in the step (1) in a steam curing box at the temperature of 90 ℃ for 24 hours;
(3) and polishing the maintained plate to obtain the composite material.
Example 2
An alkali-activated sudden thermal cracking resistant inorganic artificial stone plate is prepared by the following steps:
(0) preparing materials: taking 250kg of 10000-mesh mineral powder, 54kg of 8000-mesh aluminum silicate, 70kg of 200-2000-mesh mullite powder, 250kg of 0.1-2.5mm cordierite aggregate, 250kg of 2.5-6.0mm granite aggregate, 1kg of sodium hydroxide, 15kg of sodium silicate, 120kg of water and 1kg of polycarboxylic acid water reducer;
(1) molding: placing all the raw materials in a stirrer, fully stirring, pouring into a mould, and performing vibration molding to obtain a plate;
(2) and (5) maintenance: curing the plate in the step (1) in a steam curing box at 100 ℃ for 36 hours;
(3) and polishing the maintained plate to obtain the composite material.
Example 3
An alkali-activated sudden thermal cracking resistant inorganic artificial stone plate is prepared by the following steps:
(0) preparing materials: 150kg10000 meshes of mineral powder, 150kg10000 meshes of silica fume, 50kg8000 meshes of aluminum silicate, 50kg8000 meshes of fly ash, 10kg of 140-3000 meshes of granite powder, 254kg of 0.1-15mm mullite aggregate, 3kg of potassium hydroxide, 3kg of sodium hydroxide, 10kg of sodium silicate, 100kg of water, 200kg of polyurethane emulsion and 20kg of naphthalene series water reducing agent;
(1) molding: placing all the raw materials in a stirrer, fully stirring, pouring into a mould, and performing vibration molding to obtain a plate;
(2) and (5) maintenance: curing the plate in the step (1) in a steam curing box at the temperature of 80 ℃ for 48 hours;
(3) and polishing the maintained plate to obtain the composite material.
The raw materials listed in the invention, the values of the upper limit and the lower limit and the interval of the raw materials, and the values of the upper limit and the lower limit and the interval of the process parameters can all realize the invention, and the examples are not listed.
Comparative example 1
30 kgP-II 42.5 silicate cement, 63kg of quartz stone aggregate with the diameter of 0.1-2.5mm, 5kg of water and 2kg of polycarboxylic acid water reducing agent are placed in a stirrer to be fully stirred and then are pressed and formed, and then maintenance and polishing are carried out.
Comparative example 2
45kgP & II 42.5 portland cement, 46kg of 0.1-2.5mm granite aggregate, 7kg of water and 2kg of polycarboxylic acid water reducing agent are placed in a stirrer to be fully stirred and then are pressed and formed, and then are maintained and polished.
To verify the thermal shock cracking resistance of the inorganic artificial stone plate prepared according to the present invention, 300mm × 300mm × 300mm plates (two sets of each sample were formed, 3 parallel samples per set, and the average value of each set was taken) were prepared according to examples 1-3 and comparative examples 1-2, respectively, and the comparative examples were cured to 28 days of age and then polished.
The cracking time was measured by a 250 ℃ hot stage, the plate was cut into samples of 100 mm. times.80 mm. times.20 mm, the breaking strength of each sample was measured by a universal press, and the Mohs hardness of the plate was measured by a rock Mohs hardness tester. The measurement results are shown in table 1:
TABLE 1 cracking time and breaking strength of the sheets
| Serial number | Cracking time min | Flexural strength MPa | Mohs hardness |
| Comparative example 1 | 1 | 13.6 | 6-7 |
| Comparative example 2 | 2 | 11.8 | 5-6 |
| Example 1 | 28 | 13.5 | 6-7 |
| Example 2 | 35 | 12.7 | 5-6 |
| Example 3 | >40 | 12.9 | 6-7 |
As can be seen from Table 1, the inorganic artificial stone slab prepared by the invention has obviously improved thermal shock cracking resistance time, breaking strength of not less than 12MPa and Mohs hardness of not less than 5, and meets the relevant requirements of DB44/T1601-2015 inorganic artificial stone slab. Therefore, the sudden thermal cracking resistant inorganic artificial stone plate prepared by the invention has the characteristics of qualified strength and good sudden thermal cracking resistance.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (9)
1. The alkali-activated sudden thermal cracking resistant inorganic artificial stone plate is characterized by being prepared from the following raw materials in parts by weight:
15-50 parts of alkali-activated cementing material, 1-20 parts of powder, 40-80 parts of aggregate, 1-5 parts of activator, 5-15 parts of blender and 0-2 parts of water reducer.
2. The alkali-activated thermal cracking resistant inorganic artificial stone slab as claimed in claim 1, wherein the alkali-activated cementitious material is one or more of slag, fly ash, silica fume, aluminum silicate, red mud, phosphorous slag and coal porphyry, and the particle size of the alkali-activated cementitious material is 200-10000 meshes.
3. The alkali-activated thermal cracking resistant inorganic artificial stone plate as claimed in claim 1, wherein the powder is one or more of limestone, quartz sand, calcium powder, granite powder, quartz powder and cordierite powder, and the particle size of the powder is 140-10000 meshes.
4. The alkali-activated sudden thermal cracking resistant inorganic artificial stone slab as claimed in claim 1, wherein the aggregate is a mixture of one or more of quartz, granite, cordierite, mullite and fused silica sand; the particle size of the aggregate is 0.1-15 mm.
5. The alkali-activated thermal cracking resistant inorganic artificial stone panel as claimed in claim 1, wherein the activator is one or a mixture of sodium hydroxide, potassium hydroxide and sodium silicate.
6. The alkali-activated thermal crack resistant inorganic artificial stone panel as claimed in claim 1, wherein the blending agent is water and/or polyurethane emulsion.
7. The alkali-activated sudden thermal cracking resistant inorganic artificial stone slab as claimed in claim 1, wherein the water reducing agent is a naphthalene based water reducing agent and/or a polycarboxylic acid based water reducing agent.
8. The alkali-activated thermal cracking resistant inorganic artificial stone slab as claimed in claim 1, wherein the preparation method comprises the steps of:
(1) molding: placing all the raw materials in corresponding weight parts in a stirrer, fully stirring, pouring into a mold, and performing vibration molding or press molding by using a plate pressing machine;
(2) and (5) maintenance: placing the formed plate in a steam curing box, curing for a certain time, taking out and placing to normal temperature;
(3) polishing: and polishing the maintained plate to obtain the steel plate.
9. The alkali-activated sudden thermal cracking resistant inorganic artificial stone sheet as claimed in claim 8, wherein the temperature in the steam curing box in step (2) is controlled to be 60-120 ℃ and the curing time is 12-72 hours.
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Cited By (4)
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| CN113955995A (en) * | 2021-11-10 | 2022-01-21 | 华润水泥技术研发有限公司 | Sudden thermal cracking resistant quartz stone patterned artificial stone plate and preparation method thereof |
| CN115583820A (en) * | 2022-10-31 | 2023-01-10 | 华润水泥技术研发有限公司 | Inorganic artificial stone prepared by curing carbon dioxide and preparation method thereof |
| CN115594453A (en) * | 2022-11-02 | 2023-01-13 | 海南大学（Cn） | Fiber geopolymer sheet and preparation method thereof |
| CN117776600A (en) * | 2023-12-20 | 2024-03-29 | 华润水泥技术研发（广西）有限公司 | Preparation method of artificial stone |
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| CN115583820A (en) * | 2022-10-31 | 2023-01-10 | 华润水泥技术研发有限公司 | Inorganic artificial stone prepared by curing carbon dioxide and preparation method thereof |
| CN115594453A (en) * | 2022-11-02 | 2023-01-13 | 海南大学（Cn） | Fiber geopolymer sheet and preparation method thereof |
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