CN220318947U - Basalt fiber reinforced concrete prefabricated laminated beam - Google Patents
Basalt fiber reinforced concrete prefabricated laminated beam Download PDFInfo
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- CN220318947U CN220318947U CN202320996868.6U CN202320996868U CN220318947U CN 220318947 U CN220318947 U CN 220318947U CN 202320996868 U CN202320996868 U CN 202320996868U CN 220318947 U CN220318947 U CN 220318947U
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- basalt fiber
- reinforced concrete
- fiber reinforced
- grid
- grids
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- 229920002748 Basalt fiber Polymers 0.000 title claims abstract description 141
- 239000011210 fiber-reinforced concrete Substances 0.000 title claims abstract description 51
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229910052742 iron Inorganic materials 0.000 claims abstract description 25
- 230000002787 reinforcement Effects 0.000 claims abstract description 21
- 238000005266 casting Methods 0.000 claims abstract description 16
- 239000004567 concrete Substances 0.000 claims description 22
- 210000003205 muscle Anatomy 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 4
- 238000009941 weaving Methods 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 230000006378 damage Effects 0.000 abstract description 6
- 239000003643 water by type Substances 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 238000010008 shearing Methods 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 238000009417 prefabrication Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 10
- 239000000835 fiber Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 239000011241 protective layer Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910000629 Rh alloy Inorganic materials 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- PXXKQOPKNFECSZ-UHFFFAOYSA-N platinum rhodium Chemical compound [Rh].[Pt] PXXKQOPKNFECSZ-UHFFFAOYSA-N 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Abstract
The utility model provides a basalt fiber reinforced concrete prefabrication assembly formula pile waters roof beam, relates to pile waters roof beam technical field, including chopped basalt fiber reinforced concrete, basalt fiber net, connect iron wire, steel reinforcement cage bottom be connected with basalt fiber net through connecting the iron wire, basalt fiber reinforced concrete pour in the lower part of steel reinforcement cage and with connect iron wire and basalt fiber net pre-buried including, basalt fiber reinforced concrete top pre-buried have anti-skidding subassembly. The novel anti-cracking performance is stronger, the possibility of damage in the transportation and assembly processes can be remarkably reduced, and meanwhile, the horizontal shearing capacity of the stacked casting surface is improved, so that horizontal sliding between the cast-in-situ piece and the prefabricated member at the stacked casting surface is avoided.
Description
Technical Field
The utility model relates to a pile and water the roof beam technical field, concretely relates to basalt fiber reinforced concrete prefabrication assembly pile waters roof beam.
Background
With the development of the age, the fabricated building is increasingly applied to practical engineering, and in the field of precast beams, most precast beams are precast in factories and then transported to building sites, but because the general precast height is low, the initial strength is not high, the beam is easy to flex downwards, or initial crack damage is generated in the transportation process, and the strength is influenced.
Basalt fiber: continuous fibers drawn from natural basalt. Is a continuous fiber formed by high-speed drawing of basalt stone through a platinum-rhodium alloy wire-drawing bushing after melting at 1450-1500 ℃. The color of the pure natural basalt fiber is generally brown. Basalt fiber is a novel inorganic environment-friendly green high-performance fiber material, and is composed of oxides such as silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, ferric oxide, titanium dioxide and the like. The basalt continuous fiber has high strength and various excellent performances such as electric insulation, corrosion resistance, high temperature resistance and the like. In addition, the production process of basalt fiber determines that less waste is produced, the environmental pollution is small, and the product can be directly degraded in the environment after being abandoned without any harm, so the basalt fiber is a real environment-friendly and environment-friendly material. The basalt fiber is one of four major fibers (carbon fiber, aramid fiber, ultra-high molecular weight polyethylene and basalt fiber) which are developed mainly in China, so that the industrial production is realized. Basalt continuous fiber has been widely used in various fields such as fiber reinforced composite materials, friction materials, shipbuilding materials, heat insulation materials, automobile industry, high temperature filter fabrics, and protection fields. If it can be applied to the laminated beam, the strength and the cracking resistance of the laminated beam are obviously enhanced.
In addition, when manufacturing a concrete pile casting beam, the pile casting surface often slides due to horizontal shearing, so that the normal use of the pile casting beam is affected, and even structural damage is generated. The existing method is generally to perform surface treatment methods such as manual roughening, high-pressure water jet and the like on the pile casting surface of the beam so as to increase the roughness of the pile casting surface. However, the method for processing the stacked casting beam has the advantages of large workload, long working period and poor effect.
Disclosure of Invention
The utility model provides a basalt fiber reinforced concrete prefabricated pile waters the roof beam, this prefabricated pile waters roof beam crack resistance stronger, can show to reduce transportation and the in-process possibility that produces the damage, simultaneously, has improved the horizontal shearing ability of pile watering face, avoids pile watering face department to take place the horizontal slip.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the basalt fiber reinforced concrete prefabricated laminated beam comprises chopped basalt fiber reinforced concrete, basalt fiber grids, connecting iron wires and a reinforcement cage, wherein the basalt fiber grids are connected to the bottom of the reinforcement cage through the connecting iron wires, the basalt fiber reinforced concrete is poured on the lower portion of the reinforcement cage and embedded into the connecting iron wires and the basalt fiber grids, and an anti-slip assembly is embedded into the top end of the basalt fiber reinforced concrete.
Preferably, the reinforcement cage include ligature or welded stirrup and indulge the muscle each other, indulge the muscle including locating the first of stirrup four corners department indulge the muscle and locate in the second of stirrup avris indulge the muscle.
Preferably, the basalt fiber reinforced concrete is prepared by mixing chopped basalt fibers with the length of 9mm into common concrete, wherein basalt fiber grids are paved in a concrete protection layer at the bottom of the pile-casting beam, and reserved holes for binding and fixing concrete protection layer cushion blocks are reserved on the basalt fiber grids.
Preferably, the height of the basalt fiber reinforced concrete after being molded is 1/4-1/3 of the height of the beam after being integrally molded on the site of the stacked casting beam.
Preferably, the diameter of the chopped basalt fiber monofilaments of 9mm is 13um-17um, the basalt fiber grids are woven by basalt fiber bundles with single bundle diameter of about 1mm, the aperture size of the basalt fiber grids is 5mm multiplied by 5mm, and the basalt fiber grids are coated with a layer of epoxy resin glue and are stained with dry sand.
Preferably, the basalt fiber grid is connected with the bottom longitudinal ribs through connecting iron wires.
Preferably, the anti-slip assembly comprises a plurality of basalt fiber longitudinal pre-buried grids, wherein the basalt fiber longitudinal pre-buried grids are longitudinally pre-buried at the top end of basalt fiber reinforced concrete, and a part of the basalt fiber longitudinal pre-buried grids extend out of the upper surface of the basalt fiber reinforced concrete.
Preferably, the structure of the basalt fiber longitudinal pre-buried grid is the same as that of the basalt fiber grid, a plurality of basalt fiber longitudinal pre-buried grids are in one-to-one correspondence with a plurality of stirrups, and the basalt fiber longitudinal pre-buried grid is pre-buried in basalt fiber reinforced concrete at the inner side of the stirrups.
Preferably, the two ends of the basalt fiber longitudinal pre-buried grid are bound and fixed with stirrups through iron wires.
The beneficial effects of the utility model relates to a basalt fiber reinforced concrete prefabricated pile-casting beam are: the novel anti-cracking performance is stronger, the possibility of damage in the transportation and assembly processes can be remarkably reduced, and meanwhile, the horizontal shearing capacity of the stacked casting surface is improved, so that horizontal sliding between the cast-in-situ piece and the prefabricated member at the stacked casting surface is avoided.
Description of the drawings:
FIG. 1 is a schematic side view of the present novel structure;
FIG. 2 is a schematic diagram of the front structure of the present novel;
fig. 3 is a schematic structural diagram of the mesh connection of the novel reinforcement cage and basalt fiber;
FIG. 4 is a schematic top view of the novel basalt fiber grid;
FIG. 5 is a schematic side view of the present novel anti-slip assembly;
FIG. 6 is a top view of the mating relationship of the novel anti-slip assembly and stirrups;
1. basalt fiber reinforced concrete; 2. basalt fiber grids; 3. connecting iron wires; 4. a reinforcement cage; 5. chopped basalt fiber of 9 mm; 6. a preformed hole; 7. basalt fiber longitudinal pre-buried grid.
The specific embodiment is as follows:
the following detailed description of the embodiments of the present utility model in a stepwise manner is merely a preferred embodiment of the present utility model, and is not intended to limit the scope of the present utility model, but any modifications, equivalents, improvements, etc. within the spirit and principles of the present utility model should be included in the scope of the present utility model.
In the description of the present utility model, it should be noted that, the azimuth or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, and specific azimuth configuration and operation, and thus should not be construed as limiting the present utility model.
Example 1
The basalt fiber reinforced concrete prefabricated laminated beam comprises a chopped basalt fiber reinforced concrete 1, basalt fiber grids 2, connecting iron wires 3 and a reinforcement cage 4, wherein the basalt fiber grids 2 are connected to the bottom of the reinforcement cage 4 through the connecting iron wires 3, the basalt fiber reinforced concrete 1 is poured on the lower portion of the reinforcement cage 4 and embedded with the connecting iron wires 3 and the basalt fiber grids 2, and an anti-slip assembly is embedded at the top end of the basalt fiber reinforced concrete 1.
Example 2
Based on example 1, this example discloses:
as shown in fig. 1 and 2, the reinforcement cage 4 includes stirrups (not labeled in the drawing) and longitudinal ribs (not labeled in the drawing) that are bound or welded to each other, and the longitudinal ribs include a first longitudinal rib disposed at four corners of the stirrups and a second longitudinal rib disposed at an edge of the stirrups.
As shown in fig. 1-4, the basalt fiber reinforced concrete 1 is prepared by mixing chopped basalt fibers with the length of 9mm into common concrete, wherein basalt fiber grids 2 are paved in a concrete protection layer at the bottom of a pile casting beam, and reserved holes 6 for binding and fixing concrete protection layer cushion blocks are reserved on the basalt fiber grids 2. The concrete protective layer cushion block passes through the preformed hole and is connected with the bottom of the reinforcement cage. The arrangement of the reserved holes can prevent the basalt fiber grid 2 from being extruded and deformed by the concrete protective layer cushion block.
As shown in figures 1-4, the height of the basalt fiber reinforced concrete 1 after molding is 1/4-1/3 of the height of the beam after integrally molding in the stacked beam site.
As shown in fig. 1-4, the diameter of the chopped basalt fiber monofilament with the diameter of 9mm is 13um-17um, the basalt fiber grid 2 is formed by weaving basalt fiber bundles with the single bundle diameter of about 1mm, the aperture size of the basalt fiber grid 2 is 5mm multiplied by 5mm, and a layer of epoxy resin glue is coated outside the basalt fiber grid 2 and is stained with dry sand.
As shown in fig. 1-3, the basalt fiber grid 2 is connected with the longitudinal ribs at the bottom through connecting iron wires 3.
Example 3
Based on example 2, this example discloses:
as shown in fig. 4, 5 and 6, the anti-slip assembly comprises a plurality of basalt fiber longitudinal pre-buried grids 7, wherein the basalt fiber longitudinal pre-buried grids 7 are longitudinally pre-buried at the top end of the basalt fiber reinforced concrete 1, and a part of the basalt fiber longitudinal pre-buried grids extends out of the upper surface of the basalt fiber reinforced concrete 1.
As shown in fig. 4, 5 and 6, the structure of the basalt fiber vertical embedded grid 7 is the same as that of the basalt fiber grid 2, a plurality of basalt fiber vertical embedded grids 7 are in one-to-one correspondence with a plurality of stirrups, and the basalt fiber vertical embedded grid 7 is embedded in basalt fiber reinforced concrete 1 at the inner side of the stirrups.
As shown in fig. 4, 5 and 6, two ends of the basalt fiber longitudinal embedded grid 7 are bound and fixed with stirrups through iron wires.
Example 4
The basalt fiber reinforced concrete 1 is prepared by mixing chopped basalt fibers with the length of 9mm into common concrete, the standard number of the common concrete is C30 or more, the chopped basalt fibers 5 with the volume mixing amount of 9mm, which is 0.2 percent, are added into the common concrete, and the chopped basalt fibers reinforced concrete 1 with better crack resistance is prepared by uniformly mixing.
Before the basalt fiber grid 2 is used, a layer of epoxy resin glue is coated on the surface, the rigidity of the basalt fiber grid 2 is increased preliminarily, the initial buckling is avoided, the bonding performance with the chopped basalt fiber reinforced concrete 1 is avoided, and before the epoxy resin glue is dried, a layer of dry sand is scattered on the two sides of the basalt fiber grid 2, so that the bonding performance between the basalt fiber grid and the chopped basalt fiber reinforced concrete 1 is further improved. And secondly, after the epoxy resin is dried, a preformed hole is formed in the corresponding position where the concrete protective layer cushion block needs to be placed, so that the initial buckling of the concrete protective layer cushion block due to the influence of the concrete cushion block is avoided.
In this embodiment, the basalt fiber mesh 2 is woven from basalt fibers with a monofilament diameter of 13um into a fiber bundle of 1mm, and then bonded into a mesh with a mesh aperture of 5mm×5mm, and the overall size can be adjusted according to the size and span of the beam. The size of the opening is slightly larger than that of the concrete protective layer cushion block.
The reinforcement cage 4 is rolled according to the requirements in the actual engineering calculation book. In this example, the bottom longitudinal bars are three HRB400 bars of 14mm diameter, and the stirrups and top stand bars are HPB335 bars of 8mm diameter.
The basalt fiber grid 2 is connected with a rolled steel reinforcement cage 4 by a connecting iron wire 3 after being processed, so that the basalt fiber grid is integrated. In this embodiment, the thickness of the concrete protection layer is 30mm, and the distance between the basalt fiber grid 2 and the beam bottom is 15mm, so that the distance between the wushu fiber grid 2 and the reinforcement cage is ensured to be 15mm. The concrete connection mode is as follows: the bottom longitudinal bars are respectively connected by a connecting iron wire 3 under the corresponding positions, the distance is controlled to be 15mm, namely, three connecting iron wires 3 are arranged in a row along the width direction of the beam section (if two or four or more longitudinal bars are arranged on the beam, the middle connecting iron wires 3 can be connected on the stirrups, the middle connecting iron wires 3 are ensured to be at the middle positions along the width direction of the beam section), and the distance between the adjacent basalt fiber grids 2 along the span direction of the beam is controlled to be about 200 mm.
When the integral pouring of the wushu fiber reinforced concrete prefabricated laminated pouring beam is carried out, firstly, the chopped basalt fiber reinforced concrete 1 with the length of 15mm is poured at the bottom of a template, then, the basalt fiber grids 2 and the steel reinforcement cages 4 which are connected by the connecting iron wires 3 are put into the integral structure, the concrete protection layer cushion block is aligned with the reserved holes on the basalt fiber grids 2 when the integral structure is put into the integral structure, the effect that the fiber nets play by the basalt fiber grids 2 is reduced due to initial buckling is avoided, finally, the chopped basalt fiber reinforced concrete 1 with the remaining height is poured, and the lower part of the basalt fiber longitudinal pre-embedded grids 7 is pre-embedded at the top end part of the basalt fiber reinforced concrete 1.
Claims (9)
1. A basalt fiber reinforced concrete prefabricated laminated beam is characterized in that: the concrete comprises chopped basalt fiber reinforced concrete, basalt fiber grids, connecting iron wires and a reinforcement cage, wherein the basalt fiber grids are connected to the bottom of the reinforcement cage through the connecting iron wires, the basalt fiber reinforced concrete is poured on the lower portion of the reinforcement cage and embedded into the connecting iron wires and the basalt fiber grids, and an anti-slip assembly is embedded into the top end of the basalt fiber reinforced concrete.
2. A basalt fiber reinforced concrete precast fabricated laminated beam as defined in claim 1, wherein: the reinforcement cage include ligature or welded stirrup and indulge the muscle each other, indulge the muscle including locating the first of stirrup four corners department indulge the muscle and locate the second of stirrup avris and indulge the muscle.
3. A basalt fiber reinforced concrete prefabricated composite girder as defined in claim 2, wherein: the basalt fiber grid is paved in the concrete protection layer at the bottom of the pile-casting beam, and reserved holes for binding and fixing the concrete protection layer cushion blocks are reserved on the basalt fiber grid.
4. A basalt fiber reinforced concrete precast fabricated laminated beam as defined in claim 3, wherein: the height of the basalt fiber reinforced concrete after being molded is 1/4-1/3 of the height of the beam after being integrally molded on the site of the pile-casting beam.
5. A basalt fiber reinforced concrete precast fabricated laminated beam as defined in claim 4, wherein: the basalt fiber grid is formed by weaving basalt fiber bundles with single bundle diameter of about 1mm, the aperture size of the basalt fiber grid is 5mm multiplied by 5mm, and the basalt fiber grid is externally coated with a layer of epoxy resin glue and is stained with dry sand.
6. A basalt fiber reinforced concrete precast fabricated laminated beam as defined in claim 5, wherein: the basalt fiber grid is connected with the bottom longitudinal ribs through connecting iron wires.
7. The basalt fiber reinforced concrete prefabricated laminated beam of claim 6, wherein: the anti-slip assembly comprises a plurality of basalt fiber longitudinal embedded grids, wherein the basalt fiber longitudinal embedded grids are longitudinally embedded at the top end of basalt fiber reinforced concrete, and a part of the basalt fiber longitudinal embedded grids extend out of the upper surface of the basalt fiber reinforced concrete.
8. The basalt fiber reinforced concrete prefabricated laminated beam of claim 7, wherein: the structure of the basalt fiber longitudinal embedded grid is the same as that of the basalt fiber grid, a plurality of basalt fiber longitudinal embedded grids are in one-to-one correspondence with a plurality of stirrups, and the basalt fiber longitudinal embedded grid is embedded in basalt fiber reinforced concrete at the inner side of the stirrups.
9. The basalt fiber reinforced concrete prefabricated laminated beam of claim 8, wherein: the two ends of the basalt fiber longitudinal embedded grid are fixed with stirrups through iron wire binding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320996868.6U CN220318947U (en) | 2023-04-27 | 2023-04-27 | Basalt fiber reinforced concrete prefabricated laminated beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320996868.6U CN220318947U (en) | 2023-04-27 | 2023-04-27 | Basalt fiber reinforced concrete prefabricated laminated beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220318947U true CN220318947U (en) | 2024-01-09 |
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ID=89423087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320996868.6U Active CN220318947U (en) | 2023-04-27 | 2023-04-27 | Basalt fiber reinforced concrete prefabricated laminated beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220318947U (en) |
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- 2023-04-27 CN CN202320996868.6U patent/CN220318947U/en active Active
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