CN109053106B - Light baking-free building block and preparation method thereof - Google Patents
Light baking-free building block and preparation method thereof Download PDFInfo
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- CN109053106B CN109053106B CN201810811114.2A CN201810811114A CN109053106B CN 109053106 B CN109053106 B CN 109053106B CN 201810811114 A CN201810811114 A CN 201810811114A CN 109053106 B CN109053106 B CN 109053106B
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- building block
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- metakaolin
- free building
- light baking
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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
- C04B28/14—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 calcium sulfate cements
- C04B28/142—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/143—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 calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a light baking-free building block which comprises 20-30% of metakaolin, 5-10% of industrial byproduct gypsum, 60-70% of light aggregate and 0-5% of fiber. The preparation method comprises the following steps of (1) raw material preparation, (2) mold entering shaping and maintenance, (3) demolding molding and secondary maintenance, the method adopts metakaolin and industrial by-product gypsum as raw materials to prepare the novel light baking-free building block, the preparation process is simple, and the novel light baking-free building block is a novel wall material which is light in weight, high in strength, heat-insulating, nailable, sawable and planeable, has certain shock resistance, low cost, environment-friendly, low carbon and convenient to construct.
Description
Technical Field
The invention relates to a light baking-free building block and a preparation method thereof, in particular to a metakaolin-gypsum-based light baking-free building block and a preparation method thereof, belonging to the field of building materials.
Background
The light building block is a novel, light, high-strength and environment-friendly wall material, and can effectively reduce the dead weight of a wall body and improve the heat preservation, heat insulation and sound insulation functions of the wall body when being used for building a non-bearing wall body. At present, concrete light building blocks, gypsum-based light building blocks and the like are widely applied to building systems such as public building markets, schools, high-rise buildings, large-span buildings and the like.
However, the main stream of the light building block at present is that foamed concrete is used as a cementing material and is prepared by adding light aggregate, and no document report is found for preparing the light building block by using metakaolin as the cementing material. Metakaolin is an artificial high-activity mineral admixture, can generate geopolymer reaction under the action of a proper excitant, and has higher mechanical strength.
Disclosure of Invention
The invention provides a light baking-free building block and a preparation method thereof, which adopt metakaolin and industrial by-product gypsum as cementing materials.
The light building block is prepared from the following components in percentage by weight: 20-30% of metakaolin, 5-10% of industrial byproduct gypsum, 60-80% of lightweight aggregate and 0-5% of fiber.
Wherein the gypsum is an industrial byproduct, and can be one or more of phosphogypsum, desulfurized gypsum and fluorgypsum.
The fiber can be alkali-resistant fiber materials such as basalt fiber and glass fiber, and the length of the fiber can be 6-12 mm.
The lightweight aggregate can be one or more of ceramsite, vitrified microsphere and expanded perlite.
The process for preparing the light baking-free building block comprises the following steps:
(1) preparing the raw materials according to the proportion;
(2) moulding and maintaining: adding the raw materials prepared in the step (1) into a stirrer, and mixing according to a water-cement ratio of 1: 0.7, adding the excitant solution, stirring and mixing uniformly, and pouring the slurry into a template. Then sending the mixture into a constant temperature and humidity oven for curing.
(3) Demolding and secondary curing: and (3) removing the mould after the building block curing time in the step (2) reaches the specified time, thus obtaining the molded metakaolin-industrial byproduct gypsum-based light baking-free building block. Then the mixture is sent into a curing room for secondary curing.
The excitant solution in the step (2) is a water glass solution with the modulus of 1.2-1.5 and the solid content of 20-30%, and the water-cement ratio is 1: 0.7. the curing conditions comprise humidity of 80-95%, temperature of 60-70 ℃ and curing time of 2-4 h.
The secondary curing conditions in the step (3) are standard curing conditions: the temperature is 20 +/-2 ℃, the humidity is not less than 95 percent, and the curing time is 3 d.
The invention has the beneficial effects that:
the method is environment-friendly and simple, firing is not needed, the cost is low, the adopted main cementing material is an industrial byproduct, and the prepared building block has the characteristics of light weight, high strength, heat preservation and insulation, nailability, sawability, planeability, certain shock resistance, low cost, environment friendliness, low carbon and the like, and is a novel building material with convenient construction.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the following examples, but the scope of the present invention is not limited thereto.
Example 1:
the metakaolin-industrial byproduct gypsum-based light baking-free building block and the preparation method thereof are as follows:
(1) preparing raw materials: the main raw materials are prepared according to the following weight percentage.
25% of metakaolin, 8% of phosphogypsum, 64% of expanded perlite and 3% of basalt fiber.
(2) Moulding and maintaining: adding the raw materials prepared in the step (1) into a stirrer, and mixing according to a water-cement ratio of 1: 0.7, adding a water glass solution with the modulus of 1.2 and the solid content of 30 percent as an excitant, stirring and mixing uniformly, and pouring the slurry into a template. Then the mixture is sent into a constant temperature and humidity oven, the humidity is 90 percent, the temperature is 70 ℃, and the mixture is maintained for 3 hours.
(3) Demolding and secondary curing: and (3) removing the mould from the building block in the step (2) after the curing time reaches 3 hours to obtain the formed metakaolin-industrial byproduct gypsum-based light baking-free building block. Then the mixture is sent into a curing room, the temperature is 20 ℃, the humidity is 98 percent, secondary curing is carried out, and the curing time is 3 d.
The finally prepared metakaolin-industrial byproduct gypsum-based light baking-free building block has the specification of 600mm x 500mm x 100mm and the apparent density of 845kg/m3The breaking load is 3100N, and all indexes meet the requirements of GB/T15229-2002.
Example 2:
the metakaolin-industrial byproduct gypsum-based light baking-free building block and the preparation method thereof are as follows:
(1) preparing raw materials: the main raw materials are prepared according to the following weight percentage.
20% of metakaolin, 5% of phosphogypsum, 70% of ceramsite and 5% of alkali-resistant glass fiber.
(2) Moulding and maintaining: adding the raw materials prepared in the step (1) into a stirrer, and mixing according to a water-cement ratio of 1: 0.7, adding a water glass solution with the modulus of 1.5 and the solid content of 25 percent as an excitant, stirring and mixing uniformly, and pouring the slurry into a template. Then the mixture is sent into a constant temperature and humidity oven, the humidity is 90 percent, the temperature is 60 ℃, and the mixture is maintained for 2 hours.
(3) Demolding and secondary curing: and (3) after the curing time reaches 2h, removing the mould from the building block in the step (2) to obtain the formed metakaolin-industrial byproduct gypsum-based light baking-free building block. Then the mixture is sent into a curing room, the temperature is 20 ℃, the humidity is 98 percent, secondary curing is carried out, and the curing time is 3 d.
The finally prepared metakaolin-industrial byproduct gypsum-based light baking-free building block has the specification of 600mm x 500mm x 120mm and the apparent density of 790kg/m3The breaking load is 2700N, and all indexes meet the requirements of GB/T15229-.
Example 3:
the metakaolin-industrial byproduct gypsum-based light baking-free building block and the preparation method thereof are as follows:
(1) preparing raw materials: the main raw materials are prepared according to the following weight percentage.
30% of metakaolin, 10% of phosphogypsum and 60% of ceramsite.
(2) Moulding and maintaining: adding the raw materials prepared in the step (1) into a stirrer, and mixing according to a water-cement ratio of 1: 0.7, adding water glass solution with the modulus of 1.5 and the solid content of 20 percent as an excitant, stirring and mixing uniformly, and pouring the slurry into a template. Then the mixture is sent into a constant temperature and humidity oven, the humidity is 90 percent, the temperature is 60 ℃, and the mixture is maintained for 4 hours.
(3) Demolding and secondary curing: and (3) after the curing time reaches 4 hours, removing the mould from the building block in the step (2) to obtain the formed metakaolin-industrial byproduct gypsum-based light baking-free building block. Then the mixture is sent into a curing room, the temperature is 20 ℃, the humidity is 98 percent, secondary curing is carried out, and the curing time is 3 d.
The finally prepared metakaolin-industrial byproduct gypsum-based light baking-free building block has the specification of 600mm x 500mm x 120mm and the apparent density of 970kg/m3The breaking load is 3000N, and all indexes meet the requirements of GB/T15229-2002.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (1)
1. The preparation method of the light baking-free building block is characterized by comprising the following steps:
(1) preparing raw materials: preparing main raw materials according to the following weight percentage; 25 percent of metakaolin, 8 percent of phosphogypsum, 64 percent of expanded perlite, 3 percent of basalt fiber,
(2) moulding and maintaining: adding the raw materials prepared in the step (1) into a stirrer, and mixing according to a water-cement ratio of 1: 0.7, adding a water glass solution with the modulus of 1.2 and the solid content of 30 percent as an excitant, uniformly stirring and mixing, pouring the slurry into a template, then sending the template into a constant-temperature constant-humidity oven, keeping the template at the temperature of 70 ℃ and the humidity of 90 ℃ for 3 hours;
(3) demolding and secondary curing: after the curing time reaches 3 hours, removing the mould from the building block in the step (2) to obtain the formed metakaolin-industrial byproduct gypsum-based light baking-free building block; then, the mixture is conveyed into a curing room, the temperature is 20 ℃, the humidity is 98 percent, and secondary curing is carried out, wherein the curing time is 3 d; the finally prepared metakaolin-industrial byproduct gypsum-based light baking-free building block has the specification of 600mm x 500mm x 100mm and the apparent density of 845kg/m3The breaking load is 3100N, and all indexes meet the requirements of GB/T15229-2002.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810811114.2A CN109053106B (en) | 2018-07-23 | 2018-07-23 | Light baking-free building block and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810811114.2A CN109053106B (en) | 2018-07-23 | 2018-07-23 | Light baking-free building block and preparation method thereof |
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| CN109053106A CN109053106A (en) | 2018-12-21 |
| CN109053106B true CN109053106B (en) | 2021-11-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054283A (en) * | 2007-03-30 | 2007-10-17 | 巢启 | Construction heat preservation foam plate connecting element and use thereof |
| CN101597158A (en) * | 2008-06-03 | 2009-12-09 | 周慧堂 | A kind of lagging material and preparation method thereof |
| CN105236853A (en) * | 2015-09-02 | 2016-01-13 | 广州市建筑科学研究院有限公司 | Composite stone material and preparation method of same |
| CN106396596A (en) * | 2016-08-30 | 2017-02-15 | 江苏爱富希新型建材股份有限公司 | Inorganic fireproof sheets and production method therefor |
| JP6276029B2 (en) * | 2013-12-28 | 2018-02-07 | 太平洋マテリアル株式会社 | Plasterer mortar |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2200948A4 (en) * | 2008-09-30 | 2014-09-03 | Calera Corp | Co2-sequestering formed building materials |
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- 2018-07-23 CN CN201810811114.2A patent/CN109053106B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054283A (en) * | 2007-03-30 | 2007-10-17 | 巢启 | Construction heat preservation foam plate connecting element and use thereof |
| CN101597158A (en) * | 2008-06-03 | 2009-12-09 | 周慧堂 | A kind of lagging material and preparation method thereof |
| JP6276029B2 (en) * | 2013-12-28 | 2018-02-07 | 太平洋マテリアル株式会社 | Plasterer mortar |
| CN105236853A (en) * | 2015-09-02 | 2016-01-13 | 广州市建筑科学研究院有限公司 | Composite stone material and preparation method of same |
| CN106396596A (en) * | 2016-08-30 | 2017-02-15 | 江苏爱富希新型建材股份有限公司 | Inorganic fireproof sheets and production method therefor |
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| CN109053106A (en) | 2018-12-21 |
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Inventor after: Liao Shixiong Inventor after: Wu Lei Inventor after: Quan Sichen Inventor after: Zhao Zhiman Inventor after: Zhang Yi Inventor after: Li Dan Inventor after: Zhao Binyu Inventor before: Wu Lei Inventor before: Zhao Zhiman Inventor before: Quan Sichen Inventor before: Zhang Yi Inventor before: Li Dan Inventor before: Zhao Binyu |
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