CN110981351A - Hybrid fiber ultra-high performance concrete UHPC electric pole and manufacturing method thereof - Google Patents
Hybrid fiber ultra-high performance concrete UHPC electric pole and manufacturing method thereof Download PDFInfo
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- CN110981351A CN110981351A CN201911317857.5A CN201911317857A CN110981351A CN 110981351 A CN110981351 A CN 110981351A CN 201911317857 A CN201911317857 A CN 201911317857A CN 110981351 A CN110981351 A CN 110981351A
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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
- 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
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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
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/68—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts and applying centrifugal forces
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0263—Hardening promoted by a rise in temperature
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/24—Sea water resistance
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
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Abstract
The invention belongs to the field of electric power engineering, and particularly relates to a hybrid fiber ultra-high performance concrete (UHPC) electric pole and a manufacturing method thereof. The cement is 42.5 grade ordinary silicate, the water reducing agent is novel non-naphthalene high-performance water reducing agent AN4000, and the slurry is uniform and dense. Because the basalt fiber and the polypropylene fiber are added, the crack resistance and the durability of the ultra-high performance concrete pole are greatly improved. The electric pole is very suitable for the severe corrosion environment of coastal areas, and the steel fiber corrosion phenomenon after the steel fiber is added is avoided while the strength is improved. The raw materials used in the invention are common industrial raw materials, so that the production cost is greatly reduced, the preparation method is simple, and the cast-in-place concrete pole has wide application value in the fields of concrete pole cast-in-place and corrosion resistance.
Description
Technical Field
The invention relates to a hybrid fiber ultra-high performance concrete pole forming method in the field of electric power engineering, in particular to a high-durability hybrid fiber ultra-high performance concrete (UHPC) pole suitable for severe corrosion environments in coastal regions.
Background
The concrete pole is widely applied to the fields of power transmission and transformation engineering, railway electrification engineering and communication due to the advantages of convenient operation and maintenance, steel saving and the like, and is particularly widely applied to areas with good plains and transportation conditions in China. The total electric pole production of the electric pole enterprises in the whole country in the last half of 2017 is 823 ten thousand, the synchronous increase is 17.2% compared with 2016, and the concrete electric pole has a very wide market space. The ultra-high strength concrete and the ultra-high performance concrete (UHPC) as a novel high performance concrete have ultrahigh mechanical property and excellent durability in China since the 70 th century. The steel fiber is mixed in the UHPC to improve the ductility of concrete to a great extent, so that the UHPC has a very wide development prospect. However, the steel fiber can corrode in coastal areas and in severely polluted environments, so that the corrosion of steel bars inside the concrete pole can be further caused, and the service life and the bearing capacity of the concrete pole are seriously influenced. The basalt fiber and the polypropylene fiber effectively avoid the defect that the steel fiber is easy to corrode, simultaneously keep the ultrahigh mechanical property of the UHPC, and improve the toughening and crack resistance of the UHPC. The broken stones are added in a certain proportion on the basis of the UHPC proportion, so that the strength of concrete is improved, the electric pole is not easy to collapse and deform after centrifugal forming, and the quality of the electric pole is ensured.
Disclosure of Invention
The invention aims to provide a high-durability hybrid fiber ultra-high performance concrete (UHPC) electric pole for harsh corrosive environment in coastal areas, which solves the problems that the common concrete electric pole has poor bearing capacity and the steel fiber ultra-high performance concrete is easy to corrode.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high durability hybrid fiber Ultra High Performance Concrete (UHPC) pole for harsh corrosive environments in coastal areas, said concrete pole consisting of hybrid fiber ultra high performance concrete, prestressed reinforcement and non-prestressed reinforcement; wherein the concrete raw materials comprise the following components in parts by mass: 100 parts of cement, 22-30 parts of silica fume, 89-107 parts of quartz sand, 71-89 parts of broken stone, 0.001-0.002 part of basalt fiber, 0.0003-0.0004 part of polypropylene fiber, 7-8 parts of high-efficiency water reducing agent and 14-17 parts of water.
Wherein the prestressed steel bars are 30Si2Mn steel bars; the non-prestressed steel bars are HRB400 or HRB 500-grade hot rolled steel bars, and the prestressed steel bars and the non-prestressed steel bars are arranged at intervals
Further, the cement is 42.5-grade ordinary silicate or silicateCement; the specific surface area of the silica fume is 11500-15000 m2/kg；
Further, the water reducing agent is a novel non-naphthalene high-performance water reducing agent AN 4000;
further, the quartz sand is divided into fine sand, medium sand and coarse sand, the particle sizes are 0.16-0.315mm, 0.315-0.63mm and 0.63-1.25mm respectively, and the mass ratio is 1: 4: 2;
furthermore, the crushed stone is graded crushed stone which is obtained by crushing and screening mountain-opening rocks, and the particle size range is 5-15 mm;
further, the basalt fiber and the polypropylene fiber are long fibers having a length of 12 mm.
The preparation method of the hybrid fiber UHPC electric pole comprises the following steps:
step S1, binding steel bars and tensioning the prestressed tendons;
step S2, preparing the hybrid fiber reactive powder concrete with high durability;
step S3, loading the concrete mixture into a test mold, and carrying out centrifugal molding on the electric pole;
and step S4, performing high-temperature and high-pressure curing on the molded hybrid fiber UHPC electric pole.
Further, the step S2 is specifically:
step S21, adding the quartz sand and the broken stone into a stirrer to be dry-stirred for 2-3min, and then adding the cement and the silica fume to be dry-stirred for 2-3 min;
step S22, adding the pretreated basalt fiber and polypropylene fiber, and stirring for 5-8min until all components are uniformly dispersed;
and step S23, mixing half of the water with the water reducing agent, pouring the mixture into a stirrer for stirring, adding the rest half of the water after 3min, and stirring for 5-8 min.
Further, the centrifugal molding process of the pole in step S3 is divided into three stages, from a slow speed to a medium speed, and finally to a high speed. Wherein the rotating speed of the slow stage is between 300 and 400r/min, and the time duration is between 1 and 1.5 min; the rotating speed of the medium-speed stage is between 800 and 900r/min, and the time duration is between 0.5 and 1 min; the rotating speed of the high-speed stage is 1200-1300r/min, and the time duration is 10-20 min.
Further, the high-temperature and high-pressure curing in step S4 is divided into a temperature rising period, a constant temperature period, and a temperature lowering period. Wherein in the heating period, the heating speed is stabilized at 15 ℃ per hour, the heating reaches 90 ℃, and the pressure reaches 1.3 MPa; the constant temperature period is stabilized at 90 ℃, the pressure is 1.3MPa, and the constant temperature period needs to be maintained for 27 hours; the cooling rate in the cooling period is 30 ℃/h until the temperature is recovered to the room temperature, and the high-temperature and high-pressure maintenance is completed after the pressure is reduced to 0.1 MPa.
The invention has the following remarkable advantages:
according to the invention, the basalt fiber and the polypropylene fiber are added into the raw materials for preparing the concrete pole, so that the crack resistance and the durability of the ultra-high performance concrete pole are greatly improved. The electric pole is very suitable for the severe corrosion environment of coastal areas, and the steel fiber corrosion phenomenon after the steel fiber is added is avoided while the strength is improved. The raw materials used in the invention are common industrial raw materials, so that the production cost is greatly reduced, the preparation method is simple, and the cast-in-place concrete pole has wide application value in the fields of concrete pole cast-in-place and corrosion resistance.
Detailed Description
For further disclosure, but not limitation, the present invention is described in further detail below with reference to examples.
Example 1
A high-durability hybrid fiber ultra-high performance concrete (UHPC) electric pole for harsh corrosive environment in coastal areas is made of high-durability hybrid fiber reactive powder concrete and reinforcing steel bars, wherein the raw materials comprise the following components in parts by mass: 100 parts of cement, 27 parts of silica fume, 107 parts of quartz sand, 71 parts of crushed stone, 0.001 part of basalt fiber, 0.0004 part of polypropylene fiber, 8 parts of high-efficiency water reducing agent and 14 parts of water.
The preparation method comprises the following specific steps:
step 1: binding reinforcing steel bars, tensioning the prestressed reinforcing steel bars, and then putting the prestressed reinforcing steel bars into a test mold.
Step 2: preparing the high-durability hybrid fiber reactive powder concrete: weighing the materials of all the components according to the proportion, wherein the mass of the fiber is volume mixing percentage multiplied by volume multiplied by fiber density; adding quartz sand and broken stone into a stirrer, stirring for 2-3min, adding cement and silica fume, and stirring for 2-3 min; adding the pretreated basalt fiber and polypropylene fiber, and stirring for 5-8min until the components are uniformly dispersed; and mixing half of the water with the water reducing agent, pouring the mixture into a stirrer, stirring, adding the rest half of the water after 3min, and stirring for 5-8min to finish the preparation of the high-durability hybrid fiber reactive powder concrete.
And step 3: pouring the high-durability hybrid fiber reactive powder concrete into a test mold, and starting to carry out centrifugal molding. The centrifugal molding is firstly a slow speed stage, the rotating speed is between 300 and 400r/min, and the time duration is between 1 and 1.5 min; then, the rotating speed is between 800 and 900r/min in the middle-speed stage, and the time duration is between 0.5 and 1 min; and finally, the rotating speed is between 1200 and 1300r/min in the high-speed stage, and the time duration is between 10 and 20 min.
And 4, step 4: and (3) placing the test mold into a steam curing kettle for high-temperature high-pressure curing: firstly, stabilizing the temperature rise speed at 15 ℃ per hour in the temperature rise period, finally raising the temperature to 90 ℃, and synchronously pressurizing in the temperature rise process to reach the working pressure of 1.3 MPa; then entering a constant temperature period, wherein the temperature is stabilized at 90 ℃, the pressure is stabilized at 1.3MPa, and the temperature needs to be kept for 6 hours; and finally, in the cooling period, the cooling rate is 30 ℃/h, the pressure is synchronously reduced in the cooling process until the temperature is reduced to the room temperature, and the pressure is reduced to 0.1 MPa, so that the high-temperature and high-pressure maintenance is completed.
And 5: and removing the mold of the electric pole, and naturally maintaining the electric pole after the mold is removed, wherein the maintenance time is 28 days.
Example 2
A high-durability hybrid fiber ultra-high performance concrete (UHPC) electric pole for harsh corrosive environment in coastal areas is made of high-durability hybrid fiber reactive powder concrete and reinforcing steel bars, wherein the raw materials comprise the following components in parts by mass: 100 parts of cement, 30 parts of silica fume, 107 parts of quartz sand, 71 parts of broken stone, 0.0015 part of basalt fiber, 0.00033 part of polypropylene fiber, 8 parts of high-efficiency water reducing agent and 14 parts of water.
Example 3
A high-durability hybrid fiber ultra-high performance concrete (UHPC) electric pole for harsh corrosive environment in coastal areas is made of high-durability hybrid fiber reactive powder concrete and reinforcing steel bars, wherein the raw materials comprise the following components in parts by mass: 100 parts of cement, 30 parts of silica fume, 89 parts of quartz sand, 89 parts of broken stone, 0.0015 part of basalt fiber, 0.0003 part of polypropylene fiber, 7 parts of a high-efficiency water reducing agent and 17 parts of water.
Comparative example 1
The concrete pole comprises the following raw materials in parts by mass: 100 parts of cement, 200 parts of quartz sand, 276 parts of broken stone, 1 part of high-efficiency water reducing agent and 36 parts of water.
The preparation method is a preparation method of a common concrete pole.
The 150/8000-specification electric pole is prepared in the embodiment, and a mechanical property test and a seawater corrosion test are carried out, wherein the compressive strength in the mechanical property test is 28 days compressive strength; the cracking load is actually measured under the test of the bending resistance bearing capacity of the electric pole. The seawater corrosion test is the compressive strength and the chloride ion penetration depth under the condition of 30 days of dry-wet circulation of the high-concentration seawater solution, wherein the chloride ion penetration depth is the depth from the surface of the concrete to the corresponding point when the chloride ion concentration is reduced to be below 0.05 mol/L. The specific test results are as follows:
as can be seen from the above table, the high durability hybrid fiber ultra-high performance concrete (UHPC) pole has ultra-high mechanical properties and durability compared with the ordinary concrete pole, and particularly, the chloride ion permeation resistance under the corrosive environment is improved by 4 to 5 times, and the cracking bending moment is improved by 37% compared with the ordinary concrete pole due to the crack resistance of the hybrid fiber to the pole.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (10)
1. The hybrid fiber ultrahigh-performance concrete pole is characterized by consisting of hybrid fiber ultrahigh-performance concrete, prestressed steel bars and non-prestressed steel bars; wherein the concrete raw materials comprise the following components in parts by mass: 100 parts of cement, 22-30 parts of silica fume, 89-107 parts of quartz sand, 71-89 parts of broken stone, 0.001-0.002 part of basalt fiber, 0.0003-0.0004 part of polypropylene fiber, 7-8 parts of high-efficiency water reducing agent and 14-17 parts of water.
2. The hybrid fiber ultra high performance concrete pole as claimed in claim 1, wherein the cement is No. 42.5 ordinary portland cement or portland cement, and the silica fume has a specific surface area of 11500-15000 m2And/kg, wherein the water reducing agent is a non-naphthalene high-performance water reducing agent AN 4000.
3. The hybrid fiber ultra-high performance concrete pole according to claim 1, wherein the quartz sand is divided into fine sand, medium sand and coarse sand, the fine sand has a particle size of 0.16-0.315mm, the medium sand has a particle size of 0.315-0.63mm and the coarse sand has a particle size of 0.63-1.25mm, and the mass ratio of the fine sand to the medium sand to the coarse sand is 1: 4: 2.
4. the hybrid fiber ultra-high performance concrete pole according to claim 1, wherein the crushed stone is graded crushed and screened through mountain rock, and the grain size is 5-15 mm.
5. The hybrid fiber ultra high performance concrete pole of claim 1, wherein the basalt fibers and the polypropylene fibers are each 10-13mm in length.
6. The hybrid fiber ultra high performance concrete electric pole of claim 1, wherein said prestressed reinforcement is a 30Si2Mn steel reinforcement; the non-prestressed steel bars are HRB400 or HRB500 grade hot rolled steel bars, and the prestressed steel bars and the non-prestressed steel bars are arranged at intervals.
7. A method of making a hybrid fiber ultra high performance concrete pole as claimed in claim 1, wherein: the preparation method comprises the following specific steps:
step S1, binding steel bars and tensioning the prestressed tendons;
step S2, preparing the hybrid fiber reactive powder concrete with high durability;
step S3, loading the concrete mixture into a test mold, and carrying out centrifugal molding on the electric pole;
and step S4, performing high-temperature and high-pressure curing on the molded hybrid fiber UHPC electric pole.
8. The method for manufacturing a hybrid fiber ultra-high performance concrete pole according to claim 7, wherein the step S2 specifically comprises:
step S21, adding the quartz sand and the broken stone into a stirrer to be dry-stirred for 2-3min, and then adding the cement and the silica fume to be dry-stirred for 2-3 min;
step S22, adding the pretreated basalt fiber and polypropylene fiber, and stirring for 5-8min until all components are uniformly dispersed;
and step S23, mixing half of the water with the water reducing agent, pouring the mixture into a stirrer for stirring, adding the rest half of the water after 3min, and stirring for 5-8 min.
9. The method as claimed in claim 7, wherein the centrifugal forming process of the electric pole in step S3 is divided into three stages, from a slow speed to a medium speed and a high speed. Wherein the rotating speed of the slow stage is between 300 and 400r/min, and the time duration is between 1 and 1.5 min; the rotating speed of the medium-speed stage is between 800 and 900r/min, and the time duration is between 0.5 and 1 min; the rotating speed of the high-speed stage is 1200-1300r/min, and the time duration is 10-20 min.
10. The method for manufacturing a hybrid fiber ultra-high performance concrete pole according to claim 7, wherein the step S4 of high-temperature and high-pressure curing is divided into a temperature rising period, a constant temperature period and a temperature lowering period; wherein in the heating period, the heating speed is stabilized at 15 ℃ per hour, the heating reaches 90 ℃, and the pressure reaches 1.3 MPa; the constant temperature period is stabilized at 90 ℃, the pressure is 1.3MPa, and the constant temperature period needs to be maintained for 27 hours; the cooling rate in the cooling period is 30 ℃/h until the temperature is recovered to the room temperature, and the high-temperature and high-pressure maintenance is completed after the pressure is reduced to 0.1 MPa.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111533513A (en) * | 2020-05-08 | 2020-08-14 | 广东德泽建设工程有限公司 | Ultrahigh-performance concrete, electric pole and preparation method thereof |
| CN111978035A (en) * | 2020-07-23 | 2020-11-24 | 湖南雄烽电力设备有限公司 | Ultra-high performance concrete centrifugal pole |
| CN112047692A (en) * | 2020-09-14 | 2020-12-08 | 江西龙正科技发展有限公司 | Material suitable for preparing UHPC electric pole and electric pole prepared based on material |
| CN112047691A (en) * | 2020-09-14 | 2020-12-08 | 江西龙正科技发展有限公司 | Novel UHPC material and electric pole made of same |
| CN112876173A (en) * | 2021-03-11 | 2021-06-01 | 广西电力线路器材厂有限责任公司 | Ultrahigh-performance concrete pole and production method thereof |
| CN113045266A (en) * | 2021-02-05 | 2021-06-29 | 广东恒业水泥制品有限公司 | Self-repairing fiber reinforced ultra-high performance concrete pole and processing method thereof |
| CN113664981A (en) * | 2021-08-26 | 2021-11-19 | 苏州市兴邦化学建材有限公司 | Preparation method of ultra-high performance concrete thin-wall rod piece |
| CN114683407A (en) * | 2022-04-28 | 2022-07-01 | 四川华构住宅工业有限公司 | Preparation system and preparation method of C120 decorative concrete |
| CN115368078A (en) * | 2022-08-30 | 2022-11-22 | 河南鼎力杆塔股份有限公司 | Concrete containing basalt fibers and preparation method and application thereof |
| CN116041009A (en) * | 2022-12-20 | 2023-05-02 | 福建瑞森新材料股份有限公司 | Concrete for light anti-corrosion electric pole and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111533513A (en) * | 2020-05-08 | 2020-08-14 | 广东德泽建设工程有限公司 | Ultrahigh-performance concrete, electric pole and preparation method thereof |
| CN111978035A (en) * | 2020-07-23 | 2020-11-24 | 湖南雄烽电力设备有限公司 | Ultra-high performance concrete centrifugal pole |
| CN112047692A (en) * | 2020-09-14 | 2020-12-08 | 江西龙正科技发展有限公司 | Material suitable for preparing UHPC electric pole and electric pole prepared based on material |
| CN112047691A (en) * | 2020-09-14 | 2020-12-08 | 江西龙正科技发展有限公司 | Novel UHPC material and electric pole made of same |
| CN113045266A (en) * | 2021-02-05 | 2021-06-29 | 广东恒业水泥制品有限公司 | Self-repairing fiber reinforced ultra-high performance concrete pole and processing method thereof |
| CN112876173A (en) * | 2021-03-11 | 2021-06-01 | 广西电力线路器材厂有限责任公司 | Ultrahigh-performance concrete pole and production method thereof |
| CN113664981A (en) * | 2021-08-26 | 2021-11-19 | 苏州市兴邦化学建材有限公司 | Preparation method of ultra-high performance concrete thin-wall rod piece |
| CN114683407A (en) * | 2022-04-28 | 2022-07-01 | 四川华构住宅工业有限公司 | Preparation system and preparation method of C120 decorative concrete |
| CN115368078A (en) * | 2022-08-30 | 2022-11-22 | 河南鼎力杆塔股份有限公司 | Concrete containing basalt fibers and preparation method and application thereof |
| CN116041009A (en) * | 2022-12-20 | 2023-05-02 | 福建瑞森新材料股份有限公司 | Concrete for light anti-corrosion electric pole and preparation method thereof |
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