CN110712270A - Production process of foam concrete prefabricated part - Google Patents
Production process of foam concrete prefabricated part Download PDFInfo
- Publication number
- CN110712270A CN110712270A CN201910996995.4A CN201910996995A CN110712270A CN 110712270 A CN110712270 A CN 110712270A CN 201910996995 A CN201910996995 A CN 201910996995A CN 110712270 A CN110712270 A CN 110712270A
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- CN
- China
- Prior art keywords
- ceramsite
- foam concrete
- mold container
- foaming
- production process
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 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
- B28B1/50—Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete
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- 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
- B28B1/50—Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete
- B28B1/503—Moulds therefor
Abstract
A process for producing a foam concrete preform, comprising: (1) pre-wetting the ceramsite; (2) uniformly mixing the ingredients in proportion to prepare a dry mixed material; (3) adding water into the mixed dry material, stirring and mixing; (4) uniformly stirring a foaming agent and water to obtain a foaming liquid; (5) pouring the foaming liquid into a stirrer to prepare ceramsite foamed concrete slurry; (6) pouring ceramsite foaming concrete slurry into a mold container to prepare and form a first intermediate prefabricated part (7), demoulding the first intermediate prefabricated part, and pouring the first intermediate prefabricated part into the mold container (8) to pour the ceramsite foaming concrete slurry into the mold container; (9) and curing to form the prefabricated member after molding and demolding. The foam concrete prefabricated part prepared by the method has good heat preservation and insulation performance of 3.
Description
Technical Field
The invention relates to a production process of a concrete prefabricated member, in particular to a production process of a ceramsite foam concrete prefabricated member.
Background
The housing industrialization is a premise of the housing industrialization development, and the concrete prefabrication technology is one of the ways for realizing the housing industrialization. With the development of housing industrialization, the application of precast concrete technology is wider and wider, more and more high-precision precast concrete component products emerge, and the precast concrete components are developing towards standardization and automation.
Because the production of the concrete prefabricated part is carried out under the conditions of standard operation and strict monitoring and necessary auxiliary facilities are cooperatively completed, the produced product has better quality stability and superiority than a cast-in-place structure. The high efficiency, high quality, low resource consumption and low environmental impact of the residential building are realized through the concrete prefabrication technology, and the concrete prefabricated building has remarkable economic benefit and social benefit and is the development trend of the current residential building.
The ceramsite foam concrete takes ceramsite or (and) ceramic sand as aggregate, bubbles prepared by a physical or chemical foaming mode are introduced into a mixture, and then the mixture is cast, molded and maintained at normal temperature to form the porous material with higher strength and heat preservation performance. Because the inside of the ceramsite foam concrete contains a large number of pores, the dry density of the ceramsite foam concrete is low, and the ceramsite foam concrete can effectively reduce the self weight of a building when being used as a concrete prefabricated part material.
The conventional preparation process of the ceramsite foam concrete comprises two steps: in the first step, ceramsite, cement and water are stirred into a uniform mixture with certain fluidity, and in the second step, the mixture is mixed with foam and then poured into a mold, and the ceramsite foam concrete is formed after maintenance. The method is easy to cause the floating of the ceramsite, so that the compressive strength and the heat insulation effect of the ceramsite foam concrete are not uniform and are adversely affected.
In order to solve the above problems, the invention patent of CN201610621812.7 in the prior art proposes a production process of ceramsite foam concrete prefabricated member, which directly places the unmixed ceramsite in the mold, realizes mixing while grouting the bottom, and prevents the ceramsite from floating upwards through the pre-compacting method and the resisting action of the top cover, thereby making the ceramsite distributed uniformly and improving the performance of the concrete prefabricated member. However, the method does not fully stir and mix the ceramsite and other ingredients, and the ceramsite floats upwards while being mixed, and the problem that the ceramsite is not uniform at the upper part and the lower part still exists.
Disclosure of Invention
The invention provides a production process of a ceramsite foam concrete prefabricated part, which can fully stir and mix ceramsite and other ingredients, so that the average ceramsite distribution at the upper part of the produced prefabricated part is the same as that at the lower part of the produced prefabricated part, and the prefabricated part has uniform heat insulation performance.
The invention provides a production process of a ceramsite foam concrete prefabricated part, which comprises the following steps: (1) pretreatment: carrying out water soaking and pre-wetting treatment on the ceramsite, and naturally accumulating; (2) mixing: uniformly mixing the tailings, the cement, the fly ash and the pretreated ceramsite according to a proportion to prepare a mixed dry material; (3) stirring: putting the dry mixed materials into a stirrer, adding water, and stirring to mix uniformly; (4) foaming: uniformly stirring a foaming agent and water to obtain a foaming liquid; (5) pouring the foaming liquid into a stirrer, and uniformly stirring and mixing to prepare ceramsite foamed concrete slurry; (6) injecting ceramsite foam concrete slurry into a mold container by adopting a top grouting mode to prepare and form a first intermediate prefabricated part, wherein the first intermediate prefabricated part comprises a plurality of vertical parts with intervals and a connecting part for connecting all the vertical parts; (7) demolding the first intermediate prefabricated member to enable the connecting portion of the first intermediate prefabricated member to be located above, enabling the vertical portion to be located below and placed in the mold container, and enabling the vertical portion to be spaced from the bottom of the mold container; (8) injecting ceramsite foaming concrete slurry into the mold container in a bottom grouting mode, and filling the interval between the vertical parts and the bottom of the mold container; (9) and forming a prefabricated part after forming and demolding.
Preferably, the concrete prefabricated member is a heat-insulating brick.
Preferably, the concrete prefabricated member is in a strip shape or a square shape.
Preferably, the pre-wet treatment time of the step (1) is 2 ~ 3 h.
Preferably, the connecting part is positioned at the bottom, and the vertical parts are uniformly distributed on the connecting part.
Preferably, the volume of the upright portions is equal to the volume of the space between the upright portions.
Preferably, the width of the vertical portions is equal to the width of the space between the vertical portions.
Preferably, the average ceramsite distribution on the upper part of the produced prefabricated member is the same as that on the lower part.
Preferably, the preform produced has uniform thermal insulation properties.
Drawings
FIG. 1 is a schematic diagram of the steps of a ceramsite foam concrete prefabricated part production process according to an embodiment of the invention.
FIG. 2 is a schematic representation of the first intermediate preform preparation in step (6) of an embodiment of the present invention.
FIG. 3 is a schematic view of a first intermediate preform being placed in a mold container in step (7) of an embodiment of the present invention.
FIG. 4 is a schematic representation of a preform completed by an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the technical solutions of the present invention, the present invention will be briefly described below by using embodiments, and it is obvious that the following description is only one embodiment of the present invention, and for those skilled in the art, other technical solutions can be obtained according to the embodiments without inventive labor, and also fall within the disclosure of the present invention.
The ceramsite foam concrete prefabricated part production process provided by the embodiment of the invention can be a square or strip-shaped insulating brick for example, and comprises the following steps of: (1) pretreatment: carrying out water soaking and pre-wetting treatment on the ceramsite, and naturally accumulating; (2) mixing: uniformly mixing the tailings, the cement, the fly ash and the pretreated ceramsite according to a proportion to prepare a mixed dry material; (3) stirring: putting the dry mixed materials into a stirrer, adding water, and stirring to mix uniformly; (4) foaming: uniformly stirring a foaming agent and water to obtain a foaming liquid; (5) pouring the foaming liquid into a stirrer, and uniformly stirring and mixing to prepare ceramsite foamed concrete slurry; (6) injecting ceramsite foam concrete slurry into a mold container by adopting a top grouting mode to prepare and form a first intermediate prefabricated part, wherein the first intermediate prefabricated part comprises a plurality of vertical parts with intervals and a connecting part for connecting all the vertical parts; (7) demolding the first intermediate prefabricated member to enable the connecting portion of the first intermediate prefabricated member to be located above, enabling the vertical portion to be located below and placed in the mold container, and enabling the vertical portion to be spaced from the bottom of the mold container; (8) injecting ceramsite foaming concrete slurry into the mold container in a bottom grouting mode, and filling the interval between the vertical parts and the bottom of the mold container; (9) and forming a prefabricated part after forming and demolding.
In the step (1), tap water is taken to carry out water saturation pre-wetting treatment on the ceramsite, the treatment time can be 2 ~ 3h, and the ceramsite is naturally accumulated after the pre-wetting treatment.
In the step (2), uniformly mixing the tailings, the cement, the fly ash and the pretreated ceramsite according to a proportion to prepare a mixed dry material; wherein the cement is portland cement or aluminate cement. In order to improve the structural uniformity, the nano zeolite powder can be added into the mixed dry material.
In the step (3), the dry mixed materials are put into a stirrer, added with water and stirred to be uniformly mixed, and the stirring time is 2 ~ 5 minutes.
In the step (4), the foaming agent and water are uniformly stirred to obtain the foaming liquid, wherein the foaming agent can be a composite foaming agent. And (5) pouring the foaming liquid into a stirrer, and uniformly stirring and mixing to prepare the ceramsite foamed concrete slurry.
In the step (6), referring to fig. 2, ceramsite foam concrete slurry is injected into the mold container 10 by means of top grouting to prepare and form a first intermediate prefabricated member 20, wherein the first intermediate prefabricated member 20 comprises a plurality of vertical portions 22 with intervals 21 and a connecting portion 23 for connecting all the vertical portions 22. Wherein, connecting portion 23 is the bar bottom, and vertical portion 22 evenly distributed is on connecting portion 23. The width of the upright portions 22 is equal to the width of the spaces 21 between the upright portions 22, so that the volume of the upright portions 22 is equal to the volume of the spaces 21 between the upright portions 22. In the first intermediate preform 20, the distribution of the ceramic grains at the upper portion of the vertical portion 22 is greater than that at the lower portion.
In step (7), referring to fig. 3, the first intermediate preform 20 is demolded such that its connecting portion 23 is located above and the upright portion 22 is located below and placed in the mold container 10 upside down, wherein the bottom of the upright portion 22 is spaced 24 from the bottom of the mold container 10. In the step (8), a bottom grouting mode is adopted, ceramsite foam concrete slurry is injected into the mold container 10, and the space 21 between the vertical parts 22 and the space 24 between the vertical parts 22 and the bottom of the mold container 10 are filled, so that the prepared ceramsite foam concrete prefabricated part in the graph 4 is formed. In the interval 21 between the filled vertical parts 22, the distribution of the ceramic grains at the upper part is larger than that at the lower part, and the distribution of the ceramic grains at the lower part of the inverted vertical part 22 is larger than that at the upper part, so that the average distribution of the ceramic grains at the upper part of the whole prefabricated part after production is the same as that at the lower part, and the prefabricated part has uniform heat insulation performance. In the step (9), the prefabricated member in the mold container 10 is formed into a ceramsite foam concrete prefabricated member after being molded and demoulded. The subsequent curing step can be included after the forming and demolding.
The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (6)
1. A production process of a ceramsite foam concrete prefabricated part comprises the following steps: (1) pretreatment: carrying out water soaking and pre-wetting treatment on the ceramsite, and naturally accumulating; (2) mixing: uniformly mixing the tailings, the cement, the fly ash and the pretreated ceramsite according to a proportion to prepare a mixed dry material; (3) stirring: putting the dry mixed materials into a stirrer, adding water, and stirring to mix uniformly; (4) foaming: uniformly stirring a foaming agent and water to obtain a foaming liquid; (5) pouring the foaming liquid into a stirrer, and uniformly stirring and mixing to prepare ceramsite foamed concrete slurry; (6) injecting ceramsite foam concrete slurry into a mold container by adopting a top grouting mode to prepare and form a first intermediate prefabricated part, wherein the first intermediate prefabricated part comprises a plurality of vertical parts with intervals and a connecting part for connecting all the vertical parts; (7) demolding the first intermediate prefabricated member to enable the connecting portion of the first intermediate prefabricated member to be located above, enabling the vertical portion to be located below and placed in the mold container, and enabling the vertical portion to be spaced from the bottom of the mold container; (8) injecting ceramsite foaming concrete slurry into the mold container in a bottom grouting mode, and filling the interval between the vertical parts and the bottom of the mold container; (9) and forming a prefabricated part after forming and demolding.
2. The ceramsite foam concrete prefabricated member production process according to claim 1, which is characterized by comprising the following steps of: the concrete prefabricated part is a heat-insulating brick.
3. The ceramsite foam concrete prefabricated member production process according to claim 1, which is characterized by comprising the following steps of: the concrete prefabricated member is strip-shaped or square.
4. The process for producing a ceramsite foam concrete preform according to claim 1, wherein the pre-wetting treatment time in step (2) is 2 ~ 3 hours.
5. The ceramsite foam concrete prefabricated member production process according to claim 1, which is characterized by comprising the following steps of: the connecting part is positioned at the bottom, and the vertical parts are uniformly distributed on the connecting part.
6. The ceramsite foam concrete prefabricated member production process according to claim 1, which is characterized by comprising the following steps of: the produced prefabricated member has uniform heat preservation and insulation performance.
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| CN201910996995.4A CN110712270B (en) | 2019-10-20 | 2019-10-20 | Production process of foam concrete prefabricated part |
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| CN201910996995.4A CN110712270B (en) | 2019-10-20 | 2019-10-20 | Production process of foam concrete prefabricated part |
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| CN110712270B CN110712270B (en) | 2021-08-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111605035A (en) * | 2020-04-13 | 2020-09-01 | 江苏鑫康新型墙体材料有限公司 | Production process of ceramsite composite type heat-insulation brick |
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| KR101314741B1 (en) * | 2011-10-13 | 2013-10-08 | 이동희 | Manufacture method of inorganic foam using magnesia and its hardner at room temperature |
| CN104446603A (en) * | 2014-11-07 | 2015-03-25 | 中冶武汉冶金建筑研究院有限公司 | High-volume coal ash ceramsite foam concrete and preparation method thereof |
| CN104478369A (en) * | 2014-12-28 | 2015-04-01 | 上海隧道工程股份有限公司 | Synchronous grouting method for rectangular shield construction and grouting slurries |
| CN105773833A (en) * | 2016-03-25 | 2016-07-20 | 陈芳斌 | T-shaped sheet pile forming die and production of T-shaped sheet piles |
| CN205572665U (en) * | 2016-03-04 | 2016-09-14 | 深圳市前海绿色材料科技有限公司 | Mould of precast concrete post structure |
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2019
- 2019-10-20 CN CN201910996995.4A patent/CN110712270B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211350A (en) * | 2010-04-07 | 2011-10-12 | 方可成 | Artificial stone manufacturing equipment and method |
| KR101314741B1 (en) * | 2011-10-13 | 2013-10-08 | 이동희 | Manufacture method of inorganic foam using magnesia and its hardner at room temperature |
| CN104446603A (en) * | 2014-11-07 | 2015-03-25 | 中冶武汉冶金建筑研究院有限公司 | High-volume coal ash ceramsite foam concrete and preparation method thereof |
| CN104478369A (en) * | 2014-12-28 | 2015-04-01 | 上海隧道工程股份有限公司 | Synchronous grouting method for rectangular shield construction and grouting slurries |
| CN205572665U (en) * | 2016-03-04 | 2016-09-14 | 深圳市前海绿色材料科技有限公司 | Mould of precast concrete post structure |
| CN105773833A (en) * | 2016-03-25 | 2016-07-20 | 陈芳斌 | T-shaped sheet pile forming die and production of T-shaped sheet piles |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111605035A (en) * | 2020-04-13 | 2020-09-01 | 江苏鑫康新型墙体材料有限公司 | Production process of ceramsite composite type heat-insulation brick |
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Effective date of registration: 20211222 Address after: 261000 No. 11667, Baotong West Street, Weicheng District, Weifang City, Shandong Province Patentee after: SHANDONG DAYUAN INDUSTRIAL Co.,Ltd. Address before: No.38 Haotian North Street, Fangshan District, Beijing, 102445 Patentee before: Jiang Long |
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Denomination of invention: A production process of foam concrete precast parts Effective date of registration: 20220526 Granted publication date: 20210820 Pledgee: Bank of Weifang Limited by Share Ltd. Weifang hope branch Pledgor: SHANDONG DAYUAN INDUSTRIAL Co.,Ltd. Registration number: Y2022980006426 |