CN112476710A - Light ultra-high performance concrete prefabricated part formed by winding fibers and preparation method thereof - Google Patents
Light ultra-high performance concrete prefabricated part formed by winding fibers and preparation method thereof Download PDFInfo
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- CN112476710A CN112476710A CN202011447837.2A CN202011447837A CN112476710A CN 112476710 A CN112476710 A CN 112476710A CN 202011447837 A CN202011447837 A CN 202011447837A CN 112476710 A CN112476710 A CN 112476710A
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- performance concrete
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- prefabricated part
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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
- B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
- B28B1/525—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement containing organic fibres, e.g. wood fibres
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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
- B28B1/04—Producing shaped prefabricated articles from the material by tamping or ramming
- B28B1/045—Producing shaped prefabricated articles from the material by tamping or ramming combined with vibrating or jolting
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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
- B28B1/30—Producing shaped prefabricated articles from the material by applying the material on to a core or other moulding surface to form a layer thereon
- B28B1/40—Producing shaped prefabricated articles from the material by applying the material on to a core or other moulding surface to form a layer thereon by wrapping, e.g. winding
- B28B1/42—Producing shaped prefabricated articles from the material by applying the material on to a core or other moulding surface to form a layer thereon by wrapping, e.g. winding using mixtures containing fibres, e.g. for making sheets by slitting the wound layer
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention relates to a light ultra-high performance concrete prefabricated part formed by winding fibers and a preparation method thereof, wherein the method comprises the following steps: 1. preparing lightweight ultrahigh-performance concrete; 2. forming the concrete into a lightweight ultra-high performance concrete member; 3. winding continuous fibers impregnated with resin glue solution on the outer side of the lightweight ultrahigh-performance concrete member to form a fiber-resin composite material layer, and obtaining the lightweight ultrahigh-performance concrete pre-formed by winding fibersAnd (5) manufacturing a component. The invention uses light ultra-high performance concrete (the density is less than or equal to 2000 kg/m)3) The method is characterized in that a prefabricated part is prepared, after the strength and the shrinkage of the concrete are stable, continuous fibers impregnated with resin glue are wound on the outer side of the prefabricated part, and the method is equivalent to forming a seamless composite material reinforcing layer on the outer side of the prefabricated part, so that the method not only plays a role in tightening the internal concrete, but also can block the erosion of external corrosive media to the concrete, and can effectively improve the mechanical property and the durability of the concrete prefabricated part.
Description
Technical Field
The invention relates to the field of construction of building materials, in particular to a fiber winding molded light-weight ultrahigh-performance concrete prefabricated part and a preparation method thereof.
Background
The prefabrication and assembly construction process for bridges and houses adopts factory-like centralized prefabricated and molded components, and the components are transported to a construction site for assembly and combination, so that the construction period can be effectively shortened, the construction quality can be better controlled, the pressure on road traffic is reduced, the dust and noise pollution of the construction site can be reduced, and the method is a main development direction of future engineering construction.
The components such as the high-performance concrete prefabricated main beam, the column and the plate are assembled on site, so that the construction progress is accelerated, and the construction quality is improved. However, the high-performance concrete has high density and low strength, so that the section size of the prefabricated part is large, the transportation and hoisting construction of the prefabricated part are difficult, and the popularization and application of the prefabricated assembly construction technology are restricted.
Compared with high-performance concrete, the ultra-high-performance concrete (UHPC) has ultra-high mechanical property and excellent durability, is used for prefabricating the spliced bridge, can improve the bearing capacity of the bridge, reduce the section size of bridge members, reduce the self weight of the members and prolong the service life. However, due to the density of UHPC (2600-3) The self-weight of the prefabricated member prepared by the concrete is still larger than that of common concrete.
In order to further reduce the dead weight of the prefabricated part, the invention uses light super high performance concrete (the density is less than or equal to 2000 kg/m)3) Preparing prefabricated member, after the strength and shrinkage of concrete are stabilized, winding continuous fibre impregnated with resin adhesive on the external side of the member, and forming seamless composite material reinforced layer on the external side of the prefabricated memberThe internal concrete is tightened, so that the mechanical property of the reinforced concrete member under the condition of the same concrete mixing proportion can be achieved or exceeded without reinforcing bars or a small amount of reinforcing bars, and the erosion of external corrosive media to the concrete can be blocked, thereby effectively improving the mechanical property and durability of the lightweight ultrahigh-performance concrete prefabricated member.
Disclosure of Invention
The invention aims to provide a fiber winding-molded light-weight ultrahigh-performance concrete prefabricated part with low self weight, high bearing capacity and good anti-seismic performance and a preparation method thereof, which can reduce the self weight of the prefabricated part and improve the bearing capacity and the anti-seismic performance of the part.
The technical scheme for solving the technical problems is as follows:
the preparation method of the light ultra-high performance concrete prefabricated part formed by winding the fibers comprises the following steps:
step 1, preparing lightweight ultra-high performance concrete, wherein the density of the lightweight ultra-high performance concrete is less than or equal to 2000kg/m3The compressive strength is more than or equal to 100MPa, and the flexural strength is more than or equal to 15 MPa;
step 2, forming the lightweight ultrahigh-performance concrete into a concrete member with a required size, covering a plastic film on the surface of the concrete member after forming to prevent water evaporation, and placing the concrete member in a standard curing or autoclaved curing environment for continuous curing to a specified age after removing a mold to obtain the lightweight ultrahigh-performance concrete member;
and 3, after the strength and the shrinkage strain of the lightweight ultra-high performance concrete member obtained in the step 2 tend to be stable, winding continuous fibers impregnated with resin glue solution on the outer side of the lightweight ultra-high performance concrete member to form a fiber-resin composite material layer, and obtaining the lightweight ultra-high performance concrete prefabricated member formed by winding the fibers.
Further, the lightweight ultra-high performance concrete comprises 600-730kg/m3130-180kg/m3130-class fly ash micro-bead and 180kg/m3700-900kg/m silica fume3140-180kg/m of fine light aggregate320-30kg/m of steel fiber3Is reducedAqueous solution and 170-190kg/m3The water-cement ratio of the water is 0.15-0.18;
further, the specific surface area of the fly ash micro-beads is more than or equal to 1300m2The 28d activity index is more than or equal to 90 percent per kg, the loss on ignition is less than or equal to 5.0 percent, the water demand ratio is less than or equal to 90 percent, and the SiO of the silica fume2The mass content is more than or equal to 90 percent, and the specific surface area is more than or equal to 19500m2The activity index of/kg, 28d is more than or equal to 105 percent.
Furthermore, the fine light aggregate is shale ceramic sand, and the apparent density is less than or equal to 1500kg/m3The particle size range is 1-5 mm.
Furthermore, the nominal length of the steel fiber is 10-16mm, the equivalent diameter is 0.18-0.32mm, the yield strength is not less than 2000MPa, the breaking strength is not less than 3000MPa, and the elastic modulus is 200-220 GPa.
Further, the water reducing agent is a high-efficiency water reducing agent, the solid content is more than or equal to 30%, and the water reducing rate is more than or equal to 30%.
Further, the continuous fiber is any one of carbon fiber, aramid fiber, basalt fiber and glass fiber.
Further, the resin glue solution is any one or more of epoxy resin, phenolic resin, unsaturated polyester resin, vinyl ester resin, bismaleimide resin, thermosetting polyimide resin and cyanate resin.
Further, the thickness of the fiber resin composite material layer is 1-10 mm.
The light ultra-high performance concrete prefabricated part formed by winding the fibers is prepared by the method.
The invention has the beneficial effects that: the invention uses light ultra-high performance concrete (the density is less than or equal to 2000 kg/m)3) The method not only plays a role in hooping the internal concrete, but also can prevent the erosion of external corrosive media to the concrete, thereby effectively improving the mechanical property and durability of the lightweight ultrahigh-performance concrete prefabricated component.
Detailed Description
The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
The preparation method of the light ultra-high performance concrete prefabricated part formed by winding the fibers comprises the following steps:
1) weighing the raw materials according to the proportion, wherein the components and the content thereof comprise: cement 600-730kg/m3130-class fly ash micro-bead 180kg/m3130 kg/m of silica fume3700 kg/m of fine light aggregate3140-180kg/m steel fiber320-30kg/m of water reducing agent3150 kg/m of water3；
2) Pre-absorbing water into a saturated state by the fine light aggregate, and drying the surface water to obtain pre-wetted fine light aggregate for later use;
3) adding cement, fly ash microbeads and silica fume into a concrete mixer, uniformly mixing, adding pre-wet fine lightweight aggregate, uniformly mixing, then pouring water and a water reducing agent, uniformly mixing, uniformly adding copper-plated steel fibers, and uniformly mixing;
4) after the stirred concrete is subjected to die filling, vibrating and forming, a plastic film is covered on the surface of the stirred concrete to prevent water from evaporating, and after the die is removed, the stirred concrete is placed in a standard curing or autoclaved curing environment to be continuously cured to a specified age, so that a lightweight ultra-high performance concrete member is obtained, wherein the section of the member is rectangular or circular;
5) fixing the lightweight ultrahigh-performance concrete member on a composite material winding forming frame along an axis, driving the lightweight ultrahigh-performance concrete member to rotate around the axis through a driving motor, winding continuous fibers soaked in resin glue solution on the periphery of the concrete member, and curing the resin glue solution to obtain the lightweight ultrahigh-performance concrete prefabricated member formed by winding the fibers.
The blending ratios of the lightweight ultrahigh-performance concrete were changed to obtain examples 1 to 6, examples 1 to 6 and the blending ratios of the lightweight ultrahigh-performance concrete used are shown in Table 1.
TABLE 1 blending ratio (kg/m) of lightweight ultra-high performance concrete described in examples 1-63)
Table 2 properties of lightweight ultra high performance concrete as described in examples 1-6
TABLE 3 light ultra high Performance concrete Member size
TABLE 4 selection of winding fibers, resins and winding process used in examples 1-6
TABLE 5 mechanical Property test results of the Components in examples 1-4
| Examples | Component type | Bearing capacity/kN | Peak strain/. mu.epsilon |
| 1 | Short column | 15867 | 3806 |
| 2 | Short column | 12783 | 3511 |
| 3 | Column | 7650 | 4034 |
| 4 | Column | 9475 | 3912 |
TABLE 6 mechanical Property test results of the Components in examples 5-6
Comparative examples 7 to 12
In order to research the performance improvement effect of fiber winding forming on light ultra-high-strength concrete, the mechanical properties of a light ultra-high-performance concrete member which does not adopt fiber winding are contrastively analyzed. The structural members used in comparative examples 7 to 12 were lightweight ultra-high performance concrete structural members obtained by the methods of examples 1 to 6, respectively, without filament winding molding (see table 3), and the structural members were subjected to corresponding performance tests, the results of which are shown in tables 7 and 8.
TABLE 7 mechanical Property test results of the members in comparative examples 7-10
| Comparative example | Component type | Bearing capacity/kN | Peak strain/. mu.epsilon |
| 7 | Short column | 8350 | 3100 |
| 8 | Short column | 8586 | 3005 |
| 9 | Column | 1969 | 3254 |
| 10 | Column | 2173 | 3603 |
TABLE 8 mechanical Property test results of the members in comparative examples 11 to 12
According to the mechanical property test results of the prefabricated parts in the embodiment and the comparative example, the mechanical property of the light-weight ultrahigh-performance concrete formed by winding the fibers is greatly improved, compared with a concrete part which is not wound by fibers and has the same mixing proportion, the prefabricated concrete column formed by winding the fibers has higher bearing capacity and peak strain, and the prefabricated concrete beam formed by winding the fibers has higher peak load, peak deflection, ultimate deflection and ductility coefficient. Therefore, the bearing capacity and the deformation capacity of the lightweight ultrahigh-performance concrete member can be improved by the tightening effect under the fiber winding action.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The preparation method of the light ultra-high performance concrete prefabricated part formed by winding the fibers is characterized by comprising the following steps of:
step 1, preparing lightweight ultra-high performance concrete, wherein the density of the lightweight ultra-high performance concrete is less than or equal to 2000kg/m3The compressive strength is more than or equal to 100MPa, and the flexural strength is more than or equal to 15 MPa;
step 2, forming the lightweight ultrahigh-performance concrete into a lightweight ultrahigh-performance concrete member with a required size;
and 3, after the strength and the shrinkage strain of the lightweight ultra-high performance concrete member obtained in the step 2 tend to be stable, winding continuous fibers impregnated with resin glue solution on the outer side of the lightweight ultra-high performance concrete member to form a fiber-resin composite material layer, and obtaining the lightweight ultra-high performance concrete prefabricated member formed by winding the fibers.
2. The method for preparing a prefabricated light-weight ultrahigh-performance concrete member formed by winding fibers as claimed in claim 1, wherein the light-weight ultrahigh-performance concrete comprises 600-730kg/m3130-180kg/m3130-class fly ash micro-bead and 180kg/m3700-900kg/m silica fume3140-180kg/m of fine light aggregate320-30kg/m of steel fiber3170-190kg/m water reducing agent3The water-cement ratio of the water is 0.15-0.18;
3. the method for preparing the light ultra-high performance concrete prefabricated part formed by winding the fibers according to claim 2, wherein the cement is P.O52.5 ordinary portland cement, and the specific surface area of the fly ash micro-beads is not less than 1300m2The 28d activity index is more than or equal to 90 percent per kg, the loss on ignition is less than or equal to 5.0 percent, the water demand ratio is less than or equal to 90 percent, and the SiO of the silica fume2The mass content is more than or equal to 90 percent, and the specific surface area is more than or equal to 19500m2The activity index of/kg, 28d is more than or equal to 105 percent.
4. The method for preparing the fiber winding-molded lightweight ultrahigh-performance concrete prefabricated part according to claim 2, wherein the nominal length of the steel fiber is 8-16mm, the equivalent diameter is 0.18-0.32mm, the yield strength is not less than 2000MPa, the breaking strength is not less than 3000MPa, and the elastic modulus is 200-220 GPa.
5. The method for preparing the fiber winding-molded light ultra-high performance concrete prefabricated part according to claim 2, characterized in that the water reducing agent is a high efficiency water reducing agent, the solid content is more than or equal to 30%, and the water reducing rate is more than or equal to 30%.
6. The method for preparing the light ultra-high performance concrete prefabricated part formed by winding the fibers according to claim 2, wherein the fine light aggregate is shale ceramic sand with apparent density less than or equal to 1500kg/m3The particle size range is 1-5 mm.
7. The method for preparing the fiber winding-molded lightweight ultrahigh-performance concrete prefabricated part according to claim 1, characterized in that the continuous fiber is any one or more of carbon fiber, aramid fiber, basalt fiber and glass fiber.
8. The method for preparing the fiber winding-molded light-weight ultrahigh-performance concrete prefabricated part according to claim 1, wherein the resin glue solution is any one or more of epoxy resin, phenolic resin, unsaturated polyester resin, vinyl ester resin, bismaleimide resin, thermosetting polyimide resin and cyanate resin.
9. The method for preparing the fiber winding-molded lightweight ultrahigh-performance concrete prefabricated part according to claim 1, wherein the thickness of the fiber resin composite material layer is 1-10 mm.
10. The light ultra-high performance concrete prefabricated part formed by winding the fibers is characterized by being prepared by any one method of the methods 1-9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114524662A (en) * | 2022-03-11 | 2022-05-24 | 筑邦建筑科技投资(深圳)有限公司 | High-temperature-resistant fiber toughened light-weight silicon spar wallboard and preparation method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003104768A (en) * | 2001-09-27 | 2003-04-09 | Hiroshi Hatayama | Concrete formed body and its production method |
| CN103707519A (en) * | 2013-12-26 | 2014-04-09 | 武汉理工大学 | Preparation method of organic-inorganic composite multipurpose protective lining film |
| CN105113405A (en) * | 2015-08-21 | 2015-12-02 | 同济大学 | Composite bridge deck based on steel and UHPC (Ultra High Performance Concrete) |
| CN106193026A (en) * | 2016-07-25 | 2016-12-07 | 合肥工业大学 | A kind of fiber reinforced precast concrete tubular stake and processing method thereof |
| CN107935505A (en) * | 2017-11-30 | 2018-04-20 | 武汉理工大学 | A kind of lightweight lower shrinkage ultra-high performance concrete and preparation method thereof |
| CN109184117A (en) * | 2018-10-23 | 2019-01-11 | 广东盖特奇新材料科技有限公司 | A kind of superhigh tenacity concrete finishing slab and preparation method thereof |
| CN110054457A (en) * | 2019-04-29 | 2019-07-26 | 安徽建筑大学 | Non-evaporating feeding lightweight ultra-high performance concrete of one kind and preparation method thereof |
| CN110862247A (en) * | 2019-11-07 | 2020-03-06 | 启东霓辉新材料科技有限公司 | Concrete for producing prefabricated member and preparation method thereof |
| CN111170697A (en) * | 2020-01-20 | 2020-05-19 | 中建商品混凝土有限公司 | Modified rubber particle light-weight ultrahigh-performance concrete and preparation method thereof |
| KR20200126851A (en) * | 2019-04-30 | 2020-11-09 | 주식회사 자연 | Type B centrifugal concrete pipe with improved socket part quality and, method of manufacturing the same |
-
2020
- 2020-12-09 CN CN202011447837.2A patent/CN112476710A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003104768A (en) * | 2001-09-27 | 2003-04-09 | Hiroshi Hatayama | Concrete formed body and its production method |
| CN103707519A (en) * | 2013-12-26 | 2014-04-09 | 武汉理工大学 | Preparation method of organic-inorganic composite multipurpose protective lining film |
| CN105113405A (en) * | 2015-08-21 | 2015-12-02 | 同济大学 | Composite bridge deck based on steel and UHPC (Ultra High Performance Concrete) |
| CN106193026A (en) * | 2016-07-25 | 2016-12-07 | 合肥工业大学 | A kind of fiber reinforced precast concrete tubular stake and processing method thereof |
| CN107935505A (en) * | 2017-11-30 | 2018-04-20 | 武汉理工大学 | A kind of lightweight lower shrinkage ultra-high performance concrete and preparation method thereof |
| CN109184117A (en) * | 2018-10-23 | 2019-01-11 | 广东盖特奇新材料科技有限公司 | A kind of superhigh tenacity concrete finishing slab and preparation method thereof |
| CN110054457A (en) * | 2019-04-29 | 2019-07-26 | 安徽建筑大学 | Non-evaporating feeding lightweight ultra-high performance concrete of one kind and preparation method thereof |
| KR20200126851A (en) * | 2019-04-30 | 2020-11-09 | 주식회사 자연 | Type B centrifugal concrete pipe with improved socket part quality and, method of manufacturing the same |
| CN110862247A (en) * | 2019-11-07 | 2020-03-06 | 启东霓辉新材料科技有限公司 | Concrete for producing prefabricated member and preparation method thereof |
| CN111170697A (en) * | 2020-01-20 | 2020-05-19 | 中建商品混凝土有限公司 | Modified rubber particle light-weight ultrahigh-performance concrete and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114524662A (en) * | 2022-03-11 | 2022-05-24 | 筑邦建筑科技投资(深圳)有限公司 | High-temperature-resistant fiber toughened light-weight silicon spar wallboard and preparation method thereof |
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