CN112339064A - Method for manufacturing pipeline integrated autoclaved aerated concrete slab - Google Patents
Method for manufacturing pipeline integrated autoclaved aerated concrete slab Download PDFInfo
- Publication number
- CN112339064A CN112339064A CN202011228786.4A CN202011228786A CN112339064A CN 112339064 A CN112339064 A CN 112339064A CN 202011228786 A CN202011228786 A CN 202011228786A CN 112339064 A CN112339064 A CN 112339064A
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- China
- Prior art keywords
- bottom box
- pipeline
- manufacturing
- integrated
- aerated concrete
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Classifications
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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
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
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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
- 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
- B28B11/245—Curing concrete articles
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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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
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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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/0025—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects with installation or service material, e.g. tubes for electricity or water
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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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
- B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
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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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
- B28B7/342—Moulds, cores, or mandrels of special material, e.g. destructible materials which are at least partially destroyed, e.g. broken, molten, before demoulding; Moulding surfaces or spaces shaped by, or in, the ground, or sand or soil, whether bound or not; Cores consisting at least mainly of sand or soil, whether bound or not
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention relates to a method for manufacturing a pipeline integrated autoclaved aerated concrete slab, which comprises the steps of material preparation, material proportioning, stirring, mold distribution, reinforcing mesh sheet arrangement, high temperature resistant pipeline pre-embedding, bottom box filling block pre-setting, pouring, autoclaved curing, bottom box filling block cleaning, demolding and the like. The high-temperature-resistant wire pipe is arranged, so that the wire pipe can be prevented from being damaged by high temperature during autoclaved curing of the concrete slab; therefore, the wire pipe is embedded in the concrete, the cable penetrates through the wire pipe through the hole of the preset bottom box when wiring is convenient, and the problem that the construction environment is affected by dust, noise, construction waste and the like caused by slotting and opening holes in a construction site is solved. Through set up end box filling block in the mould, both can reserve the space that corresponds and predetermine end box hole when the concrete shaping, can protect the pipeline tip when transportation and construction again.
Description
Technical Field
The invention relates to a technology for prefabricating a concrete slab, in particular to a method for manufacturing an autoclaved aerated concrete slab with integrated pipelines.
Background
Precast concrete panels, such as precast concrete wall panels, floor panels, roof panels, and the like, are widely used in prefabricated buildings. Because the inner partition wall does not need to bear load, an Autoclaved Lightweight Concrete (ALC) slab is generally used. The ALC board is a porous concrete forming board which is formed by curing fly ash (or silica sand), cement, lime and the like serving as main raw materials through high-pressure steam.
When wiring and installing a switch socket are arranged, a groove or a hole is usually required to be formed in the ALC board, a grooving machine or a percussion drill is required to chisel a wall body when the groove or the drilling hole is formed, and the vibration and the impact on the wall body in the process can cause the crack of a board seam at the joint of the ALC board and the main body structure and the board seam between the boards; the part which is plugged by adopting mortar backfilling after the line pipe is installed can crack due to the inconsistency of the mortar and the ALC plate material; and the construction environment is greatly influenced by dust, noise and construction waste generated in the grooving and chiseling process. On the other hand, as the ALC plate needs to be autoclaved and cured by high-temperature saturated steam in the processing process, common pipelines and bottom boxes cannot be pre-embedded in the plate in advance.
Disclosure of Invention
The invention aims to solve the technical problem that a common pipeline and a bottom box cannot be pre-buried in the manufacturing process of a pipeline integrated autoclaved aerated concrete slab in the prior art, and provides a manufacturing method of the pipeline integrated autoclaved aerated concrete slab.
The technical scheme adopted by the invention for solving the technical problems is as follows: the method for manufacturing the pipeline integrated autoclaved aerated concrete slab comprises the following steps:
s10, preparing materials, proportioning, stirring, distributing a mold, and arranging a reinforcing mesh sheet;
s30, arranging and fixing a high-temperature-resistant wire tube and a bottom box filling block in the mold according to design requirements;
s50, pouring concrete;
s70, steam pressure curing;
s90, cleaning the bottom box filling blocks in the preset bottom box holes, and demolding.
In the method for manufacturing the pipeline-integrated autoclaved aerated concrete slab, the high-temperature-resistant line pipe is a metal pipe subjected to anti-corrosion treatment, and the high-temperature-resistant line pipe is arranged as the metal pipe and subjected to anti-corrosion treatment, so that the line pipe can be prevented from being damaged in the autoclaved curing process, the service life of the line pipe can be prolonged, and the service life of the line pipe is as long as that of the concrete slab.
In the method for manufacturing the pipeline-integrated autoclaved aerated concrete slab, the metal pipe is a galvanized pipe.
In the method for manufacturing the pipeline-integrated autoclaved aerated concrete slab, the bottom box filling block is made of a low-melting-point material with the vitrification temperature higher than the normal temperature and lower than the autoclaving temperature. When the concrete slab is formed, the bottom box filling block is solid, and a space with a preset bottom box hole can be formed; when high-temperature steam is autoclaved, the bottom box filling block enters a vitrification state, so that the bottom box filling block can be conveniently separated from the hole of the preset bottom box in the later period (before leaving a factory or during construction) to install the preset bottom box.
In the above method for manufacturing a pipeline-integrated autoclaved aerated concrete panel according to the present invention, when the bottom box filler block is a vitrified material with a volume unchanged or a volume shrinkage rate less than 3%, the step S90 of cleaning the bottom box filler block in the preset bottom box hole includes the following steps:
s91, enabling an opening of a preset bottom box hole to face downwards, and locally heating the preset bottom box hole to melt a bottom box filling block;
and S93, cleaning the bottom box filling blocks in the preset bottom box holes by using a tool.
When the end box filling block is vitrified in the steaming and pressing process, when the volume shrinkage is small, the gap between the end box filling block and the preset end box hole is small, the end box filling block cannot be directly taken out from the preset end box hole, and the end box filling block can be taken out by using auxiliary tools such as a high-pressure air gun, a crowbar or a chisel and the like after being melted by locally heating the preset end box hole, so that the end box can be directly installed during installation and construction.
In the above method for manufacturing a pipeline-integrated autoclaved aerated concrete panel according to the present invention, when the bottom box filler block is made of a material having a volume shrinkage rate of 3% or more after vitrification, the step S90 of cleaning the bottom box filler block in the preset bottom box hole includes the following steps:
and S93, cleaning the bottom box filling blocks in the preset bottom box holes by using a tool.
When the bottom box filling block is vitrified in the steam-pressing process, the volume of the bottom box filling block shrinks less, the gap between the bottom box filling block and the preset bottom box hole is large, the bottom box filling block can be directly taken out from the preset bottom box hole, and the bottom box filling block is directly taken out by using auxiliary tools such as crowbars or chisels, so that the bottom box can be directly installed during installation and construction.
In the method for manufacturing the pipeline integrated autoclaved aerated concrete slab, the low-melting-point material is rigid foam plastic.
In the method for manufacturing the pipeline-integrated autoclaved aerated concrete panel according to the present invention, the high temperature resistant conduit in step S30 is fixed to the steel mesh sheet by means of binding or welding or fixing bracket connection.
In the method for manufacturing a pipeline-integrated autoclaved aerated concrete panel according to the present invention, the method further includes the following steps between steps S30 and S50:
s40, a detachable baffle is fixedly arranged between the end part of the wire pipe and the end part of the bottom box filling block to prevent the bottom box filling block from flowing into the high-temperature-resistant wire pipe after being melted in the steam-pressing process.
In the method for manufacturing the pipeline-integrated autoclaved aerated concrete slab, in the step S70, the temperature of the autoclaved saturated steam is 174 to 203 ℃, and the pressure of the saturated steam is 1.2 to 1.35 mpa.
The method for manufacturing the pipeline integrated autoclaved aerated concrete slab has the following beneficial effects: the high-temperature-resistant wire pipe is arranged, so that the wire pipe can be prevented from being damaged by high temperature during autoclaved curing of the concrete slab; therefore, the wire pipe is embedded in the concrete, the cable penetrates through the wire pipe through the hole of the preset bottom box when wiring is convenient, and the problem that the construction environment is affected by dust, noise, construction waste and the like caused by slotting and opening holes in a construction site is solved. Through set up end box filling block in the mould, both can reserve the space that corresponds and predetermine end box hole when the concrete shaping, can protect the pipeline tip when transportation and construction again.
The invention will be further explained with reference to the drawings and the embodiments.
Drawings
Fig. 1 is a flow chart showing a preferred embodiment of a method for manufacturing an autoclaved aerated concrete slab with integrated pipelines according to the present invention;
fig. 1a is a flow chart illustrating a first embodiment of a method for manufacturing an autoclaved aerated concrete panel with integrated pipeline according to the present invention;
fig. 1b is a flow chart illustrating a second embodiment of the method for manufacturing an autoclaved aerated concrete panel with integrated pipeline according to the present invention;
fig. 2 is a view showing the assembly of a mold in the method for manufacturing an autoclaved aerated concrete panel with integrated pipelines according to the present invention;
fig. 3 is a side view of a pipeline-integrated autoclaved aerated concrete slab produced by the method for manufacturing a pipeline-integrated autoclaved aerated concrete slab according to the present invention;
fig. 4 is a plan view of the pipeline-integrated autoclaved aerated concrete slab produced by the method for manufacturing the pipeline-integrated autoclaved aerated concrete slab according to the present invention.
Detailed Description
As shown in fig. 1, in a preferred embodiment of the method for manufacturing an autoclaved aerated concrete slab with an integrated pipeline according to the present invention, the method comprises the following steps:
s10, preparing materials, proportioning, stirring, distributing a mold, and arranging a reinforcing mesh sheet;
s30, arranging and fixing a high-temperature-resistant wire tube and a bottom box filling block in the mold according to design requirements;
s50, pouring concrete;
s70, steam pressure curing;
s90, cleaning the bottom box filling blocks in the preset bottom box holes, and demolding.
The high-temperature-resistant wire pipe is arranged, so that the wire pipe can be prevented from being damaged by high temperature during autoclaved curing of the concrete slab; therefore, the wire pipe is embedded in the concrete, the cable penetrates through the wire pipe through the hole of the preset bottom box when wiring is convenient, and the problem that the construction environment is affected by dust, noise, construction waste and the like caused by slotting and opening holes in a construction site is solved. Through set up end box filling block in the mould, both can reserve the space that corresponds and predetermine end box hole when the concrete shaping, can protect the pipeline tip when transportation and construction again.
Specifically, as shown in fig. 2, the high temperature-resistant conduit can be fixed on the steel mesh sheet 1a by binding or welding or connecting with a fixing bracket during the die arrangement. The high-temperature-resistant wire pipe 2 is preferably a metal pipe subjected to anticorrosion treatment, such as a galvanized pipe, and the specific anticorrosion treatment process can be processes of painting, brushing paint, soaking anticorrosion paint and the like. The mesh sheet 1a of the reinforcing bars in the formed concrete is also preferably subjected to an anticorrosive treatment. And the bottom box filling block is arranged at the position of a preset bottom box hole according to the design requirement, and the bottom box filling block is connected and arranged at the tail end of the high-temperature-resistant line pipe.
In the present preferred embodiment, the temperature of the saturated steam autoclaved in step S70 is preferably set to 174 degrees celsius to 203 degrees celsius, and the pressure of the saturated steam is preferably set to 1.2 mpa to 1.35 mpa.
The bottom case filling block 4 is preferably made of a low melting point material having a glass transition temperature higher than the normal temperature (normal temperature is generally higher than 40 ℃) and lower than the autoclaving temperature (the autoclaving temperature is the temperature of saturated steam, and is generally 174 ℃ to 203 ℃). Specifically, the low melting point material may be a rigid foam such as Polyurethane (PUR), Polystyrene (PS), polyvinyl chloride (PVC), Polyethylene (PE), phenol resin (PF), or the like. Therefore, when the concrete slab is formed, the bottom box filling block is solid, and a space with a preset bottom box hole can be formed; when high-temperature steam is autoclaved, the bottom box filling block enters a vitrification state, so that the bottom box filling block can be conveniently separated from the hole of the preset bottom box in the later period (before leaving a factory or during construction) to install the preset bottom box.
As shown in fig. 1a, in a first embodiment of the method for manufacturing an autoclaved aerated concrete slab with integrated pipelines according to the present invention, a material of a bottom box filling block is a material with a volume unchanged after vitrification or a volume shrinkage rate less than 3%, and the step S90 of cleaning the bottom box filling block in a preset bottom box hole includes the following steps:
s91, enabling an opening of a preset bottom box hole to face downwards, and locally heating the preset bottom box hole to melt a bottom box filling block;
and S93, cleaning the bottom box filling blocks in the preset bottom box holes by using a tool.
As shown in fig. 1b, in a second embodiment of the method for manufacturing an autoclaved aerated concrete panel by integrating pipelines according to the present invention, a material of a bottom box filling block is a material with a volume shrinkage rate of not less than 3% after vitrification, and the step S90 of cleaning the bottom box filling block in a preset bottom box hole includes the following steps:
and S93, cleaning the bottom box filling blocks in the preset bottom box holes by using a tool.
If the material is very large in shrinkage rate after vitrification, the bottom box filling block is greatly shrunk when autoclaved and is directly separated from the preset bottom box holes, and the preset bottom box holes can be cleaned without a later period.
As shown in fig. 3 and 4, the pipeline-integrated autoclaved aerated concrete slab manufactured by the manufacturing method comprises formed concrete 1, a high-temperature-resistant pipeline 2 and a preset bottom box hole 3. The preset bottom box hole 3 is formed by reserving a bottom box filling block 4 during concrete molding, the bottom box filling block 4 is arranged at a preset position of the preset bottom box hole 3 in the molded concrete 1 according to design requirements, and one side of the preset bottom box hole is open and used for installing a preset bottom box. The preset bottom boxes can be bottom boxes such as a switch bottom box, a socket bottom box, a wiring groove bottom box and the like which are preset in a concrete slab according to the wiring design requirement and communicated with the wire tube 2, and the position and the dimension specification of the preset bottom boxes are determined according to the design requirement. The corresponding preset bottom box hole 3 is matched with the preset bottom box in shape, and the size of the preset bottom box hole 3 in the plane of the concrete plate is preferably 10-20 mm larger than the design size of the preset bottom box. The corresponding back box filling block 4 is arranged to be of a size and shape matching the pre-set back box hole 3.
In the above embodiment, it is preferable that the following steps be provided between step S30 and step S50:
s40 a detachable end cap or a detachable baffle plate for plugging the end of the line pipe is arranged at the part of the end of the line pipe, which is positioned in the hole of the preset bottom box.
This prevents the bottom case filling block 4 from being vitrified and flowing into the conduit to block the conduit. In particular, an end cap may be provided which is screwed or snapped to the relevant end, preferably a metallic material, and which can be removed before the wiring after the back box filling block has been removed.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A manufacturing method of a pipeline integrated autoclaved aerated concrete slab is characterized by comprising the following steps:
s10, preparing materials, proportioning, stirring, distributing a mold, and arranging a reinforcing mesh sheet;
s30, arranging and fixing a high-temperature-resistant wire tube and a bottom box filling block in the mold according to design requirements;
s50, pouring concrete;
s70, steam pressure curing;
s90, cleaning the bottom box filling blocks in the preset bottom box holes, and demolding.
2. The method for manufacturing the pipeline-integrated autoclaved aerated concrete panel according to claim 1, wherein the high temperature resistant line pipe is a metal pipe subjected to corrosion prevention treatment.
3. The method for manufacturing the pipeline-integrated autoclaved aerated concrete panel according to claim 2, wherein the metal pipe is a galvanized pipe.
4. The method for manufacturing the pipeline-integrated autoclaved aerated concrete panel according to claim 1, wherein the bottom box filling block is made of a low-melting-point material with a glass transition temperature higher than normal temperature and lower than the autoclaving temperature.
5. The method for manufacturing the pipeline-integrated autoclaved aerated concrete panel according to claim 4, wherein when the material of the bottom box filling block is a material with unchanged volume or less than 3% of volume shrinkage after vitrification, the step S90 of cleaning the bottom box filling block in the preset bottom box hole comprises the following steps:
s91, enabling an opening of a preset bottom box hole to face downwards, and locally heating the preset bottom box hole to melt a bottom box filling block;
and S93, cleaning the bottom box filling blocks in the preset bottom box holes by using a tool.
6. The method for manufacturing the pipeline-integrated autoclaved aerated concrete panel according to claim 4, wherein when the material of the bottom box filling block is a material with a volume shrinkage rate after vitrification of 3% or more, the step S90 of cleaning the bottom box filling block in the preset bottom box hole comprises the following steps:
and S93, cleaning the bottom box filling blocks in the preset bottom box holes by using a tool.
7. The method for manufacturing the pipeline-integrated autoclaved aerated concrete panel according to claim 4, wherein the low-melting-point material is rigid foam.
8. The method for manufacturing a pipeline-integrated autoclaved aerated concrete panel according to any one of claims 1 to 7, wherein the high temperature resistant pipeline in the step S30 is fixed on the steel mesh sheets by means of binding or welding or fixing bracket connection.
9. The method for manufacturing a pipeline-integrated autoclaved aerated concrete panel according to any one of claims 1 to 7, further comprising the following steps between the steps S30 and S50:
s40, a detachable baffle is fixedly arranged between the end part of the line pipe and the end part of the bottom box filling block.
10. The method for manufacturing the pipeline-integrated autoclaved aerated concrete panel according to any one of claims 1 to 7, wherein in the step S70, the temperature of the autoclaved saturated steam is 174 to 203 ℃, and the pressure of the saturated steam is 1.2 to 1.35 MPa.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020111313768 | 2020-10-21 | ||
| CN202011131376 | 2020-10-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112339064A true CN112339064A (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011228786.4A Pending CN112339064A (en) | 2020-10-21 | 2020-11-06 | Method for manufacturing pipeline integrated autoclaved aerated concrete slab |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113650154A (en) * | 2021-08-17 | 2021-11-16 | 山东恒瑞新型建材有限公司 | Production method of assembled aerated concrete composite heat-insulation external wall panel |
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| CN109320182A (en) * | 2018-09-25 | 2019-02-12 | 五莲县易通新型建材科技有限公司 | Autoclaved aerated concrete slab and its manufacture craft with enclosed type cavity |
| US20190153724A1 (en) * | 2017-11-20 | 2019-05-23 | Shaanxi Nitya New Materials Technology Co., Ltd. | Fire-proof thermal-insulation board of aerated concrete of b02-level lightweight autoclaved sand and method for preparing same |
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| CN103758272A (en) * | 2014-01-08 | 2014-04-30 | 永生建设集团有限公司 | Construction method for embedding pipelines in autoclave aerated concrete block walls |
| CN105696744A (en) * | 2016-03-31 | 2016-06-22 | 山东易通建材有限公司 | Integral autoclaved aerated concrete wallboard and production process thereof |
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Cited By (1)
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| CN113650154A (en) * | 2021-08-17 | 2021-11-16 | 山东恒瑞新型建材有限公司 | Production method of assembled aerated concrete composite heat-insulation external wall panel |
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Application publication date: 20210209 |