CN115370063A - Based on cement base prestressing force fibre composite board - Google Patents
Based on cement base prestressing force fibre composite board Download PDFInfo
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- CN115370063A CN115370063A CN202210954339.XA CN202210954339A CN115370063A CN 115370063 A CN115370063 A CN 115370063A CN 202210954339 A CN202210954339 A CN 202210954339A CN 115370063 A CN115370063 A CN 115370063A
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- 239000000835 fiber Substances 0.000 title claims abstract description 65
- 239000004568 cement Substances 0.000 title claims abstract description 49
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 29
- 230000002787 reinforcement Effects 0.000 claims abstract description 17
- 239000002657 fibrous material Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 13
- 239000003292 glue Substances 0.000 claims abstract description 11
- 239000004567 concrete Substances 0.000 claims abstract description 10
- 238000005516 engineering process Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 48
- 239000010959 steel Substances 0.000 claims description 48
- 230000000694 effects Effects 0.000 claims description 11
- 239000011150 reinforced concrete Substances 0.000 claims description 8
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000004574 high-performance concrete Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 230000009970 fire resistant effect Effects 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 abstract description 5
- 230000010354 integration Effects 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
-
- 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
- B28B23/0006—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects the reinforcement consisting of aligned, non-metal reinforcing elements
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4114—Elements with sockets
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/044—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of concrete
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Reinforcement Elements For Buildings (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention relates to the technical field of existing building reinforcement and reconstruction, in particular to a fiber composite board based on a prestress technology, which is mainly used for reinforcing and reinforcing a concrete member and mainly comprises two parts, wherein one part is a cement-based outer wrapping material, the other part is a stretched prestress fiber woven grid, and the fiber woven grid is impregnated with inorganic glue to improve the compatibility with the outer wrapping cement-based material, so that the fiber material and the cement-based material are effectively combined into a novel composite board. During the reinforcing construction, the composite board and the concrete member are mechanically fixed by a high-performance nail gun. The composite board greatly improves the material utilization rate of fiber materials, improves the mechanical property of a reinforcing member, reduces the construction process flow and can realize the integration of reinforcement and fire prevention.
Description
Technical Field
The invention relates to the technical field of building structure reinforcement and reconstruction, in particular to a prestressed fiber composite board based on cement base.
Background
Through rapid construction and development for many years, the existing buildings in China have large areas and low fortification standards of about 260 hundred million M 2 Completed in 2000 years ago. China is one of the most serious countries of global natural disasters, and a scientific method needs to be adopted to reinforce the existing building, improve the bearing capacity and the earthquake resistance of the building structure and ensure the life and property safety of people. The construction engineering earthquake resistance management regulation issued in 7/19/2021 confirms that earthquake resistance of buildings should adhere to the principle of people-oriented construction, comprehensive fortification and key point, existing buildings are reinforced and modified, construction funds are saved, the generation of construction wastes and the influence on the environment are reduced, economic development and urban updating are promoted, and economic sustainable development is guaranteed. The fiber reinforced material is light, has little damage to the original structure and is widely applied. Traditional fiber reinforcement technique also has certain defect, and the back up coat performance is late, and the low very big waste that causes of material utilization rate continues to bear the load durability poor after the reinforcement, and the atress form is complicated, and the fiber back up coat that easily appears peels off too early with former concrete member, receives the reduction of reinforcement member ultimate strength, leads to the component to destroy in advance, influences the reinforcement effect. And the traditional fiber reinforcement construction has high requirement on the flatness of the concrete member foundation surface, and the adopted organic adhesive bonding process pollutes the environment, has complex process and needs additional fireproof treatment process. In order to fully utilize the strength of the fiber material and simplify the construction process, a cement-based prestressed fiber composite board needs to be innovated and researched to realize the aims of an assembly process and assistance to double carbon.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a cement-based prestressed fiber composite board and a preparation method thereof, and aims to solve the problems of low utilization rate of a reinforcement technology, complex process and environmental pollution in the prior art. The composite board is formed by applying prestress on the fiber mesh and combining the fiber mesh with the outer wrapping cement-based material, and then is combined with the reinforced concrete member through a nail shooting technology. The bearing capacity of the reinforced member is improved, the structure has enough reliability, and the use performance of the structure is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a cement-based prestressed fiber composite board, which comprises a fiber woven mesh and a cement base wrapping the fiber woven mesh, wherein the fiber woven mesh is made of a carbon fiber material or a glass fiber material for building reinforcement, and the cement base is made of strength mortar, superfine aggregate concrete or high-performance concrete; the fiber woven mesh adopts a pre-tensioning stress technology, and the pre-tensioning stress of the fiber material is controlled to be 20-40 MPa; the fiber mesh grid and the cement base are connected through inorganic glue and a reserved nail shooting steel sleeve, and the high-performance steel nail shooting machine is adopted to be fixed on the surface of the reinforced concrete member during reinforcement construction.
Preferably, the strength of the cement base is not lower than M30 when strength mortar is adopted, the strength of the cement base is not lower than C30 when superfine aggregate concrete is adopted, and the diameter of the aggregate is not more than 6mm.
Preferably, the fiber woven mesh is a bidirectional mesh, the distance between meshes is 60-80mm, and the fiber woven mesh is of a single-layer or multi-layer structure.
Preferably, the nail shooting steel sleeve is a thin-wall steel pipe, and steel wires are wound on the periphery of the thin-wall steel pipe so as to increase the fixing and diffusion effects of the shooting nails.
Preferably, the thickness of the cement-based material is not less than 8mm, so that the bond stress of the cement-based material to the fiber material and the fire resistance are ensured.
Preferably, the end part of the high-performance steel shooting nail is provided with a steel spare plate, and the thickness of the steel spare plate is 3-4 mm, so that the fixing range of the shooting nail is enlarged, and the mechanical anchoring effect is improved.
In a second aspect, the present invention provides a method for preparing a cement-based prestressed fiber composite panel, comprising the steps of:
s1: selecting a proper casting mold according to the size of the composite board, and arranging fiber mesh tensioning anchors at two ends of the mold;
s2: applying pretension stress to the fiber woven mesh, fixing the fiber material on tensioning facilities at two ends, tensioning, stopping tensioning after a designed stress value is reached, and keeping the anchor device stable to maintain the tensioning stress effect of the fiber mesh;
s3: impregnating the fiber woven mesh with inorganic glue, placing a nail-shooting steel sleeve before the glue is initially set, winding steel wires outside the steel sleeve, and uniformly diffusing the steel wires;
s4: and pouring cement-based materials in the mould, enhancing maintenance, removing tension forces at two ends of the fiber grids when the strength of the cement-based materials reaches 70%, removing the mould, and correcting the shape and the size of the formed composite board.
By adopting the technical scheme, the invention has the following beneficial effects:
the composite board greatly improves the utilization rate of the fiber material body, improves the mechanical property of the reinforcing member, reduces the construction process flow and can realize the integration of reinforcement and fire prevention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a top view of a composite panel provided by the present invention;
FIG. 2 is a side view of a composite panel provided by the present invention;
FIG. 3 is a schematic size diagram of a woven web of fibers provided by the present invention;
FIG. 4 is a schematic structural view of a nail shooting steel sleeve provided by the invention;
fig. 5 is a schematic structural view of the composite plate steel nail reinforced concrete provided by the invention.
Icon: 1-cement base, 2-fiber woven mesh, 3-shooting nail steel sleeve, 4-steel wire, 5-high-performance steel shooting nail, 6-steel spare plate, 7-reinforced concrete member and 8-member steel bar.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Referring to fig. 1 to 4, the present embodiment provides a cement-based prestressed fiber composite board, including a fiber woven mesh 2 and a cement-based material 1 wrapping the fiber woven mesh, wherein the fiber woven mesh 2 is made of a carbon fiber material or a glass fiber material for building reinforcement, and the cement-based material 1 is made of strength mortar, super fine aggregate concrete or high performance concrete; the fiber woven net 2 adopts a pre-tensioning stress technology, the pre-tensioning stress of the fiber material is controlled to be 20 MPa-40 MPa, and the fiber material is kept uniform and flat under the action of tensile forces at two ends; the fiber woven mesh 2 and the cement base 1 are connected through inorganic glue (the fiber woven mesh is impregnated by the inorganic glue which is fully deep into fibers to ensure that the fiber mesh is firmly combined with the outer wrapped cement base) and a reserved nail-shooting steel sleeve 3, and a high-performance steel nail 5 is mechanically fixed on the surface of a reinforced concrete member during reinforcement construction.
In the embodiment, the strength of the cement-based 1 is not lower than M30 when strength mortar is adopted, the strength of the cement-based 1 is not lower than C30 when superfine aggregate concrete is adopted, and the diameter of the aggregate is not larger than 6mm. Or other cement-based materials such as CGM grouting material and the like.
In this embodiment, the fiber woven mesh 2 is a bidirectional mesh with a mesh spacing of 60-80mm, and the fiber woven mesh 2 is a single-layer or multi-layer structure.
In the embodiment, the nail-shooting steel sleeve 3 is a thin-wall steel pipe, and the periphery of the thin-wall steel pipe is wound with the steel wire 4 to increase the nail-shooting fixing diffusion effect.
In this embodiment, the thickness of the cement-based material 1 is not less than 8mm, so as to ensure the bond strength and fire resistance of the cement-based material to the fiber material.
In the embodiment, the end part of the high-performance steel shooting nail 5 is provided with a steel plate 6, and the thickness of the steel plate 6 is 3-4 mm, so that the fixing range of the shooting nail is increased, and the mechanical anchoring effect is improved.
In a second aspect, the present invention provides a method for preparing a cement-based prestressed fiber composite panel, comprising the steps of:
s1: selecting a proper casting mold according to the size of the composite board, and arranging fiber mesh tensioning anchors at two ends of the mold;
s2: applying pretension stress to the fiber woven mesh, fixing the fiber material on tensioning facilities at two ends, tensioning, stopping tensioning after a designed stress value is reached, and keeping the anchor device stable to maintain the tensioning stress effect of the fiber mesh;
s3: impregnating the fiber woven mesh with inorganic glue, placing a nail-shooting steel sleeve before the glue is initially set, winding steel wires outside the steel sleeve, and uniformly diffusing the steel wires;
s4: and pouring cement-based materials in the mould, enhancing maintenance, removing tension forces at two ends of the fiber grids when the strength of the cement-based materials reaches 70%, removing the mould, and correcting the shape and the size of the formed composite board.
As shown in fig. 5, in use, the composite board is fixed to the reinforced concrete member 7 (provided with the member steel bars 8 inside the reinforced concrete member 7) by the high-performance steel nails 5, so as to achieve the structural reinforcement effect. The invention adopts the nail shooting technology to realize the mechanical anchoring of the composite board and the reinforced member, the original substrate surface does not need special treatment, and a thinner plastering surface layer can be reserved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. The cement-based prestressed fiber composite board is characterized by comprising a fiber woven mesh and a cement base wrapping the fiber woven mesh, wherein the fiber woven mesh is made of a carbon fiber material or a glass fiber material for building reinforcement, and the cement base is made of strength mortar, ultrafine aggregate concrete or high-performance concrete; the fiber woven mesh adopts a pre-tensioning stress technology, and the pre-tensioning stress of the fiber material is controlled to be 20-40 MPa; the fiber mesh grid and the cement base are connected through inorganic glue and a reserved nail shooting steel sleeve, and the high-performance steel nail shooting machine is adopted to be fixed on the surface of the reinforced concrete member during reinforcement construction.
2. The cement-based prestressed fiber composite board as claimed in claim 1, wherein said cement-based prestressed fiber composite board has a strength of not less than M30 when using strength mortar, a strength of not less than C30 when using ultrafine aggregate concrete, and an aggregate diameter of not more than 6mm.
3. The cement-based prestressed fiber composite board as claimed in claim 1, wherein said fiber-woven mesh is a bidirectional mesh with a mesh spacing of 60-80mm, and the fiber-woven mesh is a single-layer or multi-layer structure.
4. The cement-based prestressed fiber composite board as claimed in claim 1, wherein said nail-shooting steel sleeve is a thin-walled steel tube, and the periphery of said thin-walled steel tube is wrapped with steel wires to increase the nail-shooting fixation diffusion effect.
5. The cement-based prestressed fiber composite board as claimed in claim 1, wherein the thickness of said cement-based material is not less than 8mm to ensure the bond strength of cement-based material to fiber material and fire-resistant performance.
6. The cement-based prestressed fiber composite board as claimed in claim 1, wherein the end of said high-performance steel nail is provided with a steel plate, and the thickness of said steel plate is 3-4 mm, so as to increase the fixing range of the nail and improve the mechanical anchoring effect.
7. A method for preparing the cement-based prestressed fiber composite board as claimed in any one of claims 1 to 6, wherein said method comprises the steps of:
s1: selecting a proper casting mold according to the size of the composite board, and arranging fiber mesh tensioning anchors at two ends of the mold;
s2: applying pretension stress to the fiber woven mesh, fixing the fiber material on tensioning facilities at two ends, tensioning, stopping tensioning after a designed stress value is reached, and keeping the anchor device stable to maintain the tensioning stress effect of the fiber mesh;
s3: impregnating the fiber woven mesh with inorganic glue, placing a nail-shooting steel sleeve before the glue is initially set, winding steel wires outside the steel sleeve, and uniformly diffusing the steel wires;
s4: and pouring cement-based materials in the mould, enhancing maintenance, removing tension forces at two ends of the fiber grids when the strength of the cement-based materials reaches 70%, removing the mould, and correcting the shape and the size of the formed composite board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210954339.XA CN115370063A (en) | 2022-08-10 | 2022-08-10 | Based on cement base prestressing force fibre composite board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210954339.XA CN115370063A (en) | 2022-08-10 | 2022-08-10 | Based on cement base prestressing force fibre composite board |
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| CN115370063A true CN115370063A (en) | 2022-11-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116023102A (en) * | 2023-02-03 | 2023-04-28 | 江苏海洋大学 | High-durability permanent template applicable to high-corrosion environment and production process |
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| CN105781141A (en) * | 2016-04-21 | 2016-07-20 | 湖南大学 | Textile reinforced cement matrix composite board for reinforcement of concrete flexural members and production method thereof |
| KR102104034B1 (en) * | 2019-09-05 | 2020-04-23 | (주) 캐어콘 | Fiber-reinforced concrete and repairing method using the same |
| CN211341892U (en) * | 2019-11-19 | 2020-08-25 | 四川省建筑科学研究院有限公司 | Quick reinforced structure of reinforced concrete member |
| CN111705940A (en) * | 2020-07-17 | 2020-09-25 | 上海圣奎塑业有限公司 | Wall heat preservation system, PC prefabricated component and exempt from to tear open template |
| CN211851012U (en) * | 2019-12-30 | 2020-11-03 | 西安建筑科技大学 | Shear-resistant reinforcing device for reinforced concrete member |
| CN217027560U (en) * | 2021-12-02 | 2022-07-22 | 上海圣奎新型建材有限公司 | Composite heat-insulation plate with built-in metal net rack and heat-insulation wall structure comprising same |
-
2022
- 2022-08-10 CN CN202210954339.XA patent/CN115370063A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202899428U (en) * | 2012-07-06 | 2013-04-24 | 杭州固华复合材料科技有限公司 | Novel composite heat-preservation thin-wall outer wallboard |
| CN105781141A (en) * | 2016-04-21 | 2016-07-20 | 湖南大学 | Textile reinforced cement matrix composite board for reinforcement of concrete flexural members and production method thereof |
| KR102104034B1 (en) * | 2019-09-05 | 2020-04-23 | (주) 캐어콘 | Fiber-reinforced concrete and repairing method using the same |
| CN211341892U (en) * | 2019-11-19 | 2020-08-25 | 四川省建筑科学研究院有限公司 | Quick reinforced structure of reinforced concrete member |
| CN211851012U (en) * | 2019-12-30 | 2020-11-03 | 西安建筑科技大学 | Shear-resistant reinforcing device for reinforced concrete member |
| CN111705940A (en) * | 2020-07-17 | 2020-09-25 | 上海圣奎塑业有限公司 | Wall heat preservation system, PC prefabricated component and exempt from to tear open template |
| CN217027560U (en) * | 2021-12-02 | 2022-07-22 | 上海圣奎新型建材有限公司 | Composite heat-insulation plate with built-in metal net rack and heat-insulation wall structure comprising same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116023102A (en) * | 2023-02-03 | 2023-04-28 | 江苏海洋大学 | High-durability permanent template applicable to high-corrosion environment and production process |
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