CN109162373B - Precast concrete sandwich insulation board and preparation method thereof - Google Patents
Precast concrete sandwich insulation board and preparation method thereof Download PDFInfo
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- CN109162373B CN109162373B CN201811286867.2A CN201811286867A CN109162373B CN 109162373 B CN109162373 B CN 109162373B CN 201811286867 A CN201811286867 A CN 201811286867A CN 109162373 B CN109162373 B CN 109162373B
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- grid
- net
- insulation board
- steel wire
- precast concrete
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- 238000009413 insulation Methods 0.000 title claims abstract description 43
- 239000011178 precast concrete Substances 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 239000004567 concrete Substances 0.000 claims abstract description 34
- 239000011151 fibre-reinforced plastic Substances 0.000 claims abstract description 8
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000011810 insulating material Substances 0.000 claims description 10
- 238000005336 cracking Methods 0.000 claims description 9
- 229910052755 nonmetal Inorganic materials 0.000 claims description 9
- 229910000746 Structural steel Inorganic materials 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 8
- 235000000396 iron Nutrition 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims 3
- 230000002742 anti-folding effect Effects 0.000 abstract description 2
- 230000000703 anti-shock Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 238000004321 preservation Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920002748 Basalt fiber Polymers 0.000 description 1
- 238000005267 amalgamation Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/78—Heat insulating elements
- E04B1/80—Heat insulating elements slab-shaped
-
- 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
- B28B1/16—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted for producing layered articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
- B29C2045/14237—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity
Abstract
The invention relates to the field of buildings and provides a precast concrete sandwich insulation board, which comprises a grid and connecting plates around the grid, wherein steel meshes formed by staggered steel wires are respectively arranged on the upper and lower sides of the grid, a plurality of fixed grid connecting pieces are arranged in the inner space of the grid, the grid connecting pieces are in a shape like a Chinese character 'ji', each grid connecting piece comprises fixing parts which are positioned at two ends and are connected with upper and lower steel wires, a connecting rod with a space inclined is connected between the fixing parts, and the fixing parts are vertically fixed with the steel wires; the connecting rod is positioned in the organic heat-insulating layer, and the fixing part is positioned in the concrete layers at the two sides; the periphery of the net rack is fixedly connected with a connecting plate with preset nuts. The heat-insulating layer and the concrete layers on the two sides are better in connection performance, so that the overall performance of the plate is improved; the net rack connecting piece is connected by adopting fiber reinforced plastic to form bridge-cut connection, so that the overall heat insulation performance of the plate is effectively improved; the production is more rapid and convenient; the anti-folding and shock resistance of the plate are improved; the connection is more firm and reliable.
Description
Technical Field
The invention relates to the field of buildings, in particular to a precast concrete sandwich insulation board and a preparation method thereof.
Background
The concrete precast sandwich insulation board is formed by connecting an inner leaf concrete board, an insulation layer and an outer leaf concrete board through special connecting pieces or three-dimensional light steel wire net frames, and has wide application in assembled buildings due to high integration, better production quality in factories, material saving, labor saving, construction period saving, field construction environment protection and other reasons. However, the prefabricated composite energy-saving plate is hindered from developing due to late starting of the assembled building in China. The prefabricated composite energy-saving plate adopted in China at the present stage mainly introduces a foreign sandwich technology and is improved on the basis of the foreign sandwich technology, and is not completely suitable for the residence in China due to the introduction technology, and the following defects are particularly caused: (1) The existing connecting pieces are vertically embedded in the heat insulation layer, concrete is poured on two sides, the concrete on two sides and the heat insulation layer are compounded together through the tensile force of the connecting pieces, so that the production and processing are quick and convenient, the contact surface between the connecting pieces and the concrete slab on the inner side and the outer side is low, the connecting pieces are irrelevant, the connectivity and the performance of the whole structure of the wallboard are reduced, the stability of a building structure is seriously affected, and potential safety hazards exist. (2) The net frame adopting the steel wire structure has higher heat conductivity coefficient, and influences the integral heat insulation performance. And during the later processing, steel wires are inserted into the insulation board for welding, so that the production efficiency is low and the safety coefficient is low. (3) The existing prefabricated concrete sandwich insulation board is connected in a sleeve grouting connection and a bolt connection mode; the sleeve grouting connection needs grouting material, can be disassembled after solidification, and has a speed slower than that of bolt connection; the bolt connection needs to be embedded in concrete by the bolt sleeve, and the poor connectivity of the bolt sleeve and the whole plate affects the overall performance of the plate-to-plate connection.
The problems seriously prevent the prefabricated concrete sandwich insulation board from being applied in practical scale.
Disclosure of Invention
The invention aims to solve the technical problems and provides the precast concrete sandwich insulation board which is better in connection performance, mechanical performance and insulation performance, reliable in assembly and convenient and fast to produce.
The invention is realized by the following technical scheme, the precast concrete sandwich insulation board comprises a net rack and connecting plates around the net rack, steel nets formed by staggered steel wires are respectively arranged on the upper and lower sides of the net rack, and the precast concrete sandwich insulation board is characterized in that a plurality of fixed net rack connecting pieces are arranged in the inner space of the net rack, the whole net rack connecting pieces are in a shape like a Chinese character 'ji', each net rack connecting piece comprises fixing parts which are positioned at two ends and are connected with upper and lower steel wires, a connecting rod with a space inclination is connected between the fixing parts, and the fixing parts are vertically fixed with the steel wires; the connecting rod is positioned in the organic heat-insulating layer, and the fixing part is positioned in the concrete layers at two sides; connecting plates with preset nuts are fixedly connected to the periphery of the net rack.
In order to improve the heat preservation performance, the middle part of the connecting rod is provided with a broken bridge, and the broken bridge is connected through the connecting rod made of nonmetal.
In order to enhance the connection strength, the nonmetal is fiber reinforced plastic.
Preferably, the connecting plate is angle iron, and one side of the angle iron perpendicular to the connecting surface is provided with a plurality of drilling holes, and nuts are fixed below the drilling holes.
Preferably, the angle iron is positioned in a groove formed in the concrete layer.
In order to enhance the overall strength, two sides of the net frame are respectively fixed with an anti-cracking net, and the anti-cracking net adopts a steel wire net or a glass fiber net.
A preparation method for preparing the precast concrete sandwich insulation board, which comprises the following steps,
(1) Welding the steel wires and the grid connecting pieces into a three-dimensional steel wire grid according to the design requirements of the prefabricated sandwich heat-insulating plate and the light steel wire grid building, wherein the fixing parts of the three-dimensional steel wire grid connecting pieces are respectively positioned in a vertical plane with the upper steel wires and the lower steel wires; wherein the steel wire adopts a low-carbon cold drawn steel wire with the diameter of 3-10mm;
(2) Angle irons are welded around the three-dimensional steel wire net rack, holes are drilled on the peripheries of the angle irons according to design requirements, and nuts are welded; the edge length of the angle steel is 20-100mm;
(3) Placing the welded net rack into an injection mold, and injecting an organic heat-insulating material to form a three-dimensional light steel wire net rack heat-insulating plate; the organic heat-insulating material is one of XPS, EPS or PU, and the thickness is 50-200mm;
(4) Placing an anti-cracking net at the bottom of the die, horizontally placing the three-dimensional light steel wire rack heat-insulating plate into a pouring die, and pouring fine stone concrete on one side of the three-dimensional light steel wire rack heat-insulating plate; the strength of the concrete is more than or equal to C20, and the thickness is 30-110mm;
(5) And after the concrete reaches the specified strength, paving an anti-cracking net again, pouring concrete on the other side, and then integrally curing to obtain the prefabricated sandwich insulation board.
In order to increase the connection strength of the concrete, in the step (3), the thickness of the organic heat-insulating material is smaller than that of the three-dimensional steel wire net frame.
In order to simplify the manufacturing process flow, the injection mold of the organic heat-insulating material is positioned at the joint of the fixing part and the connecting part, so that the thickness of the organic heat-insulating material is equal to the height of the connecting part.
The present invention has the advantage that,
(1) The three-dimensional steel wire net frame is adopted as a framework, so that the connection performance of the heat preservation layer and concrete layers at two sides is better, and the overall performance of the plate is improved;
(2) The net rack connecting piece is connected by adopting fiber reinforced plastic to form bridge-cut connection, so that the overall heat insulation performance of the plate is effectively improved;
(3) The three-dimensional light steel wire net rack has special shape, can realize one-step molding of the organic heat-insulating material, and is more rapid and convenient to produce;
(4) The angle irons around the precast concrete sandwich insulation board are pressed to be edges, so that the anti-folding and shock resistance of the board are improved;
(5) The connecting piece nut is connected with the whole three-dimensional steel wire net rack through welding, the whole structure stress between the plates is stronger, and the connection is more firm and reliable.
Drawings
FIG. 1 is a schematic diagram of a thermal insulation board of the present application;
FIG. 2 is a schematic diagram of the grid structure of the present application;
FIG. 3 is an enlarged schematic view of the grid structure;
FIG. 4 is a schematic diagram of a rack connector structure;
FIG. 5 is a schematic sectional view of a thermal insulation board;
FIG. 6 is a schematic view of another construction of a rack connector;
in the figure, angle iron 1, drilling 2, concrete layer 3, net frame 4, steel wire 41, heat insulating layer 5, nut 6, anti-cracking net 7, net frame 8, net frame connecting piece 9, and connecting rod.
Detailed Description
The present application is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1 to 4, the invention provides a precast concrete sandwich insulation board, which comprises a grid 4 in the middle of the insulation board and connecting plates around the grid. Wherein the upper and lower of the net rack are respectively provided with steel nets formed by interlacing steel wires 4, and the inner space of the net rack is provided with a plurality of fixed net rack connecting pieces 8. As shown in fig. 4, the net rack connecting piece is in a shape of a Chinese character 'ji', wherein the net rack connecting piece 8 comprises fixing parts which are positioned at two ends and are connected with upper and lower steel wires, as shown in the figure, the upper and lower sides of the net rack connecting piece are respectively connected with fixing parts which are perpendicular to the steel wires, the fixing parts are in a U-shaped structure, a connecting rod 9 with a space incline is connected between the upper and lower fixing parts, and the connecting rod is connected with the upper and lower fixing parts to play a supporting role. When the net rack connecting piece is fixed with the upper steel wire and the lower steel wire, the fixing parts are respectively fixed with the steel wires, and the fixing parts are all positioned in a vertical plane, so that the net rack connecting piece is connected with the lower end of the upper steel wire and the upper end of the lower steel wire to form a net rack structure which is parallel to each other.
As shown in fig. 5, the grid is located inside the frame formed by the connecting plates, the organic heat-insulating layer is cast inside, the connecting rods are located in the organic heat-insulating layer 5 when the grid is cast, the fixing parts are perpendicular to the steel wires and located in the concrete layers 3 on two sides, and therefore the connecting rods are fixed with the heat-insulating layer, and the perpendicular parts are connected with the concrete layers on two sides. As shown in figure 5, the net rack and the connecting plate are welded and fixed, and the connecting plate fixed around the net rack is internally provided with a preset nut 6. And as shown in combining fig. 1 and 5, the drill holes 2 are arranged above the connecting plates, the nuts are correspondingly arranged below the connecting plates and are welded and fixed, the structure that the adjacent connecting plates are provided with the fixing nuts is formed, when pouring is performed, the nuts are fixed on the inner sides, so that the connection strength between the heat insulation plates is greatly improved, the complicated post-processing can be omitted, and the fixing mode is performed before pouring, so that the influence of defects such as deformation and the like on the whole quality due to welding processing after post-pouring molding is avoided, and the risk is controlled before pouring.
As the preference, the connecting plate of this application is angle bar 1, is equipped with a plurality of drilling 2 in angle bar and the perpendicular one side of junction surface like this, still drilling perpendicular to heated board's side, the below fixation nut of drilling, when adjacent heated board amalgamation assembly, only need utilize the bolt to utilize the steel sheet to connect the both sides nut can realize the connection of heated board fixed. The side length of the angle steel is 20-100mm, the equal side or unequal side, and the thickness is 3-100mm.
Therefore, when the precast concrete sandwich insulation board with the structure is manufactured, the method comprises the following steps that (1) steel wires and grid connectors are welded into a three-dimensional steel wire grid according to the design requirements of the precast sandwich insulation board and a light steel wire grid building, and the fixing parts of the three-dimensional steel wire grid connectors are respectively positioned in a vertical plane with upper steel wires and lower steel wires; wherein the steel wire adopts a low-carbon cold drawn steel wire with the diameter of 3-10mm; (2) Angle irons are welded around the three-dimensional steel wire net rack, holes are drilled on the peripheries of the angle irons according to design requirements, and nuts are welded; the edge length of the angle steel is 20-100mm; (3) Placing the welded net rack into an injection mold, and injecting an organic heat-insulating material to form a three-dimensional light steel wire net rack heat-insulating plate; the organic heat-insulating material is one of XPS, EPS or PU, and the thickness is 50-200mm; (4) Placing an anti-cracking net at the bottom of the die, horizontally placing the three-dimensional light steel wire rack heat-insulating plate into a pouring die, and pouring fine stone concrete on one side of the three-dimensional light steel wire rack heat-insulating plate; the strength of the concrete is more than or equal to C20, and the thickness is 30-110mm; (5) And after the concrete reaches the specified strength, paving an anti-cracking net again, pouring the concrete on the other side by adopting a steel wire net or a glass fiber net, and then carrying out integral maintenance to obtain the prefabricated sandwich insulation board.
In the preparation process, in order to increase the bonding strength of the concrete layer and the net frame, the thickness of the organic heat-insulating material is smaller than that of the three-dimensional steel wire net frame, so that the concrete layer is contacted with the fixing part and the connecting rod, and the connection strength is increased. In order to further simplify the processing flow, the thickness control of the heat preservation layer is simpler, and the injection mold of the organic heat preservation material is positioned at the joint of the fixing part and the connecting part, so that the thickness of the organic heat preservation material is equal to the height of the connecting part. The angle iron is positioned in a groove formed by the concrete layer.
Example two
As shown in fig. 6, in order to increase the overall heat insulation performance of the heat insulation board, a bridge cut-off is arranged in the middle of the connecting rod of the net rack connecting piece, and the bridge cut-off is connected by a connecting rod made of nonmetal. Namely, the middle part of the connecting rod of the net rack connecting piece is disconnected, and is connected by utilizing a nonmetal material, and heat insulation is performed by utilizing the characteristic of poor nonmetal heat conductivity. Because the connecting rod is positioned in the organic heat-insulating layer, the connecting rod made of nonmetal and the heat-insulating layer structure form a heat-insulating structure. In this embodiment, in order to secure strength, the nonmetal uses fiber reinforced plastic. The fiber reinforced plastic is preferably one of glass fiber reinforced plastic and basalt fiber reinforced plastic, and has a diameter of 5-10mm.
In the description of the present application, the terms "configured," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly coupled, detachably coupled, or integrally coupled. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context. The terms "upper," "lower," and the like, refer to an orientation or positional relationship based on that shown in the drawings, or that is conventionally laid down when the subject application is used, merely to facilitate description of the application and to simplify the description, and do not indicate or imply that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.
Claims (8)
1. The precast concrete sandwich insulation board comprises a grid and connecting plates around the grid, steel meshes formed by staggered steel wires are respectively arranged on the upper portion and the lower portion of the grid, and the precast concrete sandwich insulation board is characterized in that a plurality of fixed grid connecting pieces are arranged in the inner space of the grid, the grid connecting pieces are in a shape like a Chinese character 'ji', each grid connecting piece comprises fixing parts which are positioned at two ends and are connected with upper steel wires and lower steel wires, a connecting rod which is inclined in space is connected between the fixing parts, and the fixing parts are vertically fixed with the steel wires; the connecting rod is positioned in the organic heat-insulating layer, and the fixing part is positioned in the concrete layers at two sides; connecting plates with preset nuts are fixedly connected to the periphery of the net rack; the middle part of the connecting rod is provided with a broken bridge, and the broken bridge is connected through a connecting rod made of nonmetal; the nonmetal is fiber reinforced plastic.
2. The precast concrete filled insulation board of claim 1, wherein the connecting plate is angle iron, a plurality of drilling holes are arranged on one side of the angle iron, which is perpendicular to the connecting surface, and nuts are fixed below the drilling holes.
3. The precast concrete filled insulation panel of claim 2 wherein the angle iron is located in a recess formed in the concrete layer.
4. The precast concrete filled insulation panel of claim 1, wherein anti-crack nets are respectively fixed at both sides of the net frame.
5. The precast concrete filled insulation panel of claim 4, wherein the anti-crack net is one of steel wire net or glass fiber net.
6. A method for preparing the precast concrete sandwich insulation board according to claim 4, which is characterized by comprising the following steps of (1) connecting net frame connecting pieces by adopting fiber reinforced plastic according to the design requirements of the precast sandwich insulation board and the light steel wire net frame building to form bridge-cut-off connection; welding the steel wires and the net frame connecting pieces into a three-dimensional steel wire net frame, wherein the fixing parts of the three-dimensional steel wire net frame connecting pieces are respectively positioned in a vertical plane with the upper steel wires and the lower steel wires;
(2) Angle irons are welded around the three-dimensional steel wire net rack, holes are drilled on the peripheries of the angle irons according to design requirements, and nuts are welded;
(3) Placing the welded net rack into an injection mold, and injecting an organic heat-insulating material to form a three-dimensional light steel wire net rack heat-insulating plate;
(4) Placing an anti-cracking net at the bottom of the die, horizontally placing the three-dimensional light steel wire rack heat-insulating plate into a pouring die, and pouring fine stone concrete on one side of the three-dimensional light steel wire rack heat-insulating plate;
(5) And after the concrete reaches the specified strength, paving an anti-cracking net again, pouring concrete on the other side, and then integrally curing to obtain the prefabricated sandwich insulation board.
7. The method for producing a precast concrete filled insulation board according to claim 6, wherein in the step (3), the thickness of the organic insulation material is smaller than the thickness of the three-dimensional wire mesh frame.
8. The method for preparing the precast concrete filled insulation board according to claim 7, wherein the injection mold of the organic insulation material is positioned at the joint of the fixing part and the connecting part, so that the thickness of the organic insulation material is equal to the height of the connecting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811286867.2A CN109162373B (en) | 2018-10-31 | 2018-10-31 | Precast concrete sandwich insulation board and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811286867.2A CN109162373B (en) | 2018-10-31 | 2018-10-31 | Precast concrete sandwich insulation board and preparation method thereof |
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| Publication Number | Publication Date |
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| CN109162373A CN109162373A (en) | 2019-01-08 |
| CN109162373B true CN109162373B (en) | 2023-12-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109693761A (en) * | 2019-01-11 | 2019-04-30 | 中山市武汉理工大学先进工程技术研究院 | A kind of environment-friendly type has the assembled load floating structure of long-acting thermal-insulating function |
| CN109950853A (en) * | 2019-04-30 | 2019-06-28 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | A kind of railway construction heat preservation weight gain cover board |
| CN114685174B (en) * | 2022-04-27 | 2023-07-14 | 长兴明天炉料有限公司 | High-strength light iron runner and preparation method thereof |
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| CN204252379U (en) * | 2014-11-17 | 2015-04-08 | 中国十七冶集团有限公司 | Super large Prefabricated exterior wall heat-insulation plate |
| CN105587073A (en) * | 2015-12-28 | 2016-05-18 | 浙江八达建设集团有限公司 | Light self-insulation composite wallboard and manufacturing method thereof |
| CN106930428A (en) * | 2017-04-25 | 2017-07-07 | 山东龙新节能科技有限公司 | Prefabricated steel wire net rack integrated board self-heat conserving structure and construction method for filling wall |
| CN106978877A (en) * | 2017-05-12 | 2017-07-25 | 保定市冀创建筑工程有限公司 | The steel wire net rack composite sand wiched wall board and its construction method of built-in three layers of warming plate |
| CN108118789A (en) * | 2018-01-15 | 2018-06-05 | 安徽建筑大学 | One kind is used for prefabricated sandwich heat preserving wall body steel core fiber composite connector and its assembly technology |
| CN209011340U (en) * | 2018-10-31 | 2019-06-21 | 山东方圆建筑材料有限公司 | Precast concrete sandwiched heat insulation board |
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