CN111747703A - Ultrahigh-performance concrete river fence and manufacturing method thereof - Google Patents
Ultrahigh-performance concrete river fence and manufacturing method thereof Download PDFInfo
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- CN111747703A CN111747703A CN202010510220.4A CN202010510220A CN111747703A CN 111747703 A CN111747703 A CN 111747703A CN 202010510220 A CN202010510220 A CN 202010510220A CN 111747703 A CN111747703 A CN 111747703A
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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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- 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
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
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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
-
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses an ultrahigh-performance concrete river fence and a manufacturing method thereof, belonging to the technical field of resource utilization of building materials and solid wastes. The ultrahigh-performance concrete river fence is prepared from an ultrahigh-performance concrete material consisting of cement, silica fume, concrete ash, steel slag powder, desulfurized gypsum, reclaimed sand, a water reducing agent, a defoaming agent, steel fibers and the like. The construction material has high strength, can realize that the strength of the small-sized railing component meets the requirements of safety and structure, is beautiful, firm, durable, high in strength, environment-friendly, energy-saving, corrosion-resistant, aging-resistant, non-deformable, simple to manufacture and install, low in price and rich in shape of the railing component, and meets the requirements of personalized river course fence design and construction. The invention uses a large amount of steel slag powder, concrete ash, desulfurized gypsum and waste concrete solid waste, reduces the pollution of the discharge of the solid waste to the environment, realizes the purpose of changing waste into valuable and can reduce the production cost of the ultra-high performance concrete river fence.
Description
Technical Field
The invention relates to a river fence and a construction method thereof, in particular to an ultrahigh-performance concrete river fence and a construction method thereof, belonging to the technical field of resource utilization of building materials and solid wastes.
Background
The traditional river course fence has various varieties, such as a wood bamboo fence, a cement concrete fence, a profile steel fence, an iron art fence, a plastic wood fence and the like, different fences can adopt different structures according to different materials, guardrails made of different materials also have different characteristics, and simultaneously have respective defects, and have different adaptive ranges according to material sources and material characteristics. For example, wood and bamboo fences have low strength and are easy to corrode; although the strength of the cement concrete fence is improved, the structure of the cement concrete fence is fat beam and fat column which is not beautiful and increases the weight of the railing due to the requirement of strength; the plastic fence has low strength, must be used by combining with a steel lining and is not aging-resistant; the plastic-wood fence is easy to deform; steel and iron art fences are strong, but are costly, prone to corrosion, and require frequent maintenance. Therefore, according to the requirements of the river fence, especially the characteristics and factors such as cost, beauty and high use strength should be comprehensively considered, the river fence product meeting the requirements of all aspects needs to be developed, which becomes a technical problem to be solved urgently.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to overcome the defects in the prior art and provide the ultra-high performance concrete river fence and the manufacturing method thereof.
In order to achieve the purpose of the invention, the invention adopts the following technical scheme:
an ultrahigh-performance concrete river fence is made of ultrahigh-performance concrete and mainly comprises upright posts, crosspieces and vertical shelves;
the ultra-high performance concrete comprises the following materials in percentage by weight:
as the preferable technical scheme of the invention, the material composition and the weight percentage content of the ultra-high performance concrete are as follows:
as a preferable technical scheme of the invention, the cement is not less than 52.5-grade ordinary portland cement.
As a preferable technical scheme of the invention, the silicon ash is an ultrafine silicon powder material generated in the process of smelting ferrosilicon and industrial silicon, the particle size of the silicon ash is less than or equal to 1 mu m and is not less than 80% of the total mass of the silicon ash, the average particle size of the silicon ash particles is 0.1-0.3 mu m, and the specific surface area of the silicon ash is 20000-28000 square meters per kg.
As a preferred technical scheme of the invention, the concrete ash is powder with the particle size not larger than 0.15mm left after waste concrete is crushed, classified and processed into recycled coarse aggregate and recycled fine aggregate; the powder is prepared into powder with the grain diameter not more than 5 mu m, namely concrete ash, by adopting a circulating grinding and primary closed-circuit powder selection process consisting of a high-fine mill and a K-type powder selector.
As a preferable technical scheme of the invention, the steel slag powder adopts steel slag micro powder, converter or electric furnace steel slag is utilized, a pre-grinding closed-loop circulating system and a final grinding closed-loop circulating system are adopted, and the steel slag is processed into the steel slag powder with the particle size of not more than 30 mu m through grinding and repeated iron removal processes. Preferably, the steel slag powder is steel slag micro powder prepared by using converter or electric furnace steel slag meeting the YB/TO22 standard.
As a preferable technical scheme of the invention, the desulfurized gypsum is beta-type semi-hydrated desulfurized gypsum which is obtained by drying, calcining, grinding and the like of waste residues generated by flue gas desulfurization of a coal-fired power plant, wherein the beta-type semi-hydrated desulfurized gypsum: and (3) grinding the beta-CaSO 4 and 1/2H2O to be more than or equal to 85 percent until the specific surface area is more than or equal to 500 square meters per kilogram.
As the preferable technical scheme of the invention, the reclaimed sand is prepared from waste concrete, and the preparation method of the reclaimed sand comprises the following steps: crushing and processing the waste concrete into recycled coarse aggregate with the grain diameter of 5-40mm and recycled fine aggregate with the grain diameter of 0.15-5mm, namely recycled sand; cleaning and screening the reclaimed sand to obtain reclaimed sand with different meshes and grades: 20-40 meshes, 40-80 meshes and 80-120 meshes.
As a preferable technical scheme of the invention, the water reducing agent is a powdery high-efficiency polycarboxylic acid water reducing agent, and the water reducing rate is not lower than 30%.
As a preferable technical scheme of the invention, the defoaming agent is a powder defoaming agent.
As a preferable technical scheme of the invention, the steel fiber adopts copper-plated steel fiber, the diameter is 0.12-0.25mm, and the length is 10-14 mm.
As the preferred technical scheme of the invention, the length and width of the section of the upright post of the ultra-high performance concrete river fence are not higher than 16cm, and the height of the upright post is not lower than 120 cm; the length and width of the cross section of the crosspiece are not higher than 10cm and 6cm correspondingly; the length and width of the cross section of the vertical rail are not higher than 5 cm.
The invention relates to a manufacturing method of an ultrahigh-performance concrete river fence, which is used for preparing ultrahigh-performance concrete slurry and comprises the following steps:
putting the ultra-high performance concrete material into a vertical shaft planetary mixer, adding water for stirring, controlling the water-cement ratio to be 0.15-0.25, and stirring for 5-10 minutes to obtain ultra-high performance concrete slurry; then pouring the ultra-high performance concrete slurry into molds of the upright posts, the crosspieces and the vertical shelves, and pouring so as to prepare the ultra-high performance concrete river fence; and after pouring, maintaining at normal temperature, removing the formwork the next day, and installing and constructing the river fence seven days later.
As the preferable technical scheme of the invention, the water cement ratio is controlled to be 0.18-0.20, and the mixture is stirred for 8-10 minutes to obtain the ultra-high performance concrete slurry.
As a preferable technical scheme of the invention, the manufacturing method of the ultra-high performance concrete comprises the following steps:
the method comprises the following steps of weighing and proportioning the materials according to the material composition and weight percentage content of the ultra-high performance concrete, sequentially putting cement, silica fume, concrete ash, steel slag powder, desulfurized gypsum, reclaimed sand, a water reducing agent and a defoaming agent into a mixer, stirring for 8-10 minutes, stirring uniformly, then adding steel fibers, stirring for 10-12 minutes, and fully and uniformly mixing to obtain the ultra-high performance concrete material.
Compared with the prior art, the invention has the following obvious and prominent substantive characteristics and remarkable advantages:
1. according to the invention, a large amount of solid wastes such as steel slag powder, concrete ash, desulfurized gypsum, waste concrete and the like are used, so that the pollution of the discharge of the solid wastes to the environment is reduced, the aim of changing waste into valuable is realized, and the production cost of the ultra-high performance concrete river fence can be reduced;
2. according to the invention, the ultrafine steel slag powder and the desulfurized gypsum are added into the ultra-high performance concrete, so that the activity of the cement, the silica fume and the ultrafine concrete ash can be excited after the ultra-high performance concrete meets water, the synergistic effect of multiple components is exerted, and meanwhile, the addition of the desulfurized gypsum plays a role in micro-expansion and reduces the contraction;
3. the reclaimed sand has a good particle grading mode, a large amount of silica fume, concrete ash and superfine steel slag powder are also doped, and the prepared ultra-high performance concrete river fence has the outstanding advantages of high strength, high toughness, high compactness and high durability by adding the high-efficiency water reducing agent and the steel fibers;
4. the ultrahigh-performance concrete riverway fence has the advantages of being free from steam curing in conventional curing, simple in structure and convenient to assemble; compared with other river channel fences, the fence has good durability, can reduce the subsequent maintenance cost, prolongs the service life, and has good application prospect;
5. the river course fence construction and construction method is simple and easy to implement, low in cost and suitable for popularization and application.
Drawings
Fig. 1 is a schematic structural diagram of an ultra-high performance concrete river fence according to various embodiments of the present invention.
Detailed Description
The above-described scheme is further illustrated below with reference to specific embodiments, which are detailed below:
the first embodiment is as follows:
in this embodiment, referring to fig. 1, an ultra-high performance concrete riverway fence is made of ultra-high performance concrete, and the ultra-high performance concrete riverway fence is composed of a vertical column 1, a crosspiece 2 and a vertical crosspiece 3; taking 100kg of ultra-high performance concrete material as an example, the material composition of the ultra-high performance concrete is as follows: 35kg of cement, 5kg of silica fume, 3kg of concrete ash, 8kg of steel slag powder, 3.5kg of desulfurized gypsum, 43.8kg of reclaimed sand, 0.35kg of water reducing agent, 0.15kg of defoaming agent and 1.2kg of steel fiber.
The cement is 52.5-grade ordinary portland cement;
the silicon ash is an ultrafine silicon powder material generated in the process of smelting ferrosilicon and industrial silicon, the particles with the fineness less than or equal to 1 mu m of the silicon ash are not less than 80 percent of the total mass of the silicon ash, the average particle size of the silicon ash particles is 0.3 mu m, and the specific surface area of the silicon ash is 20000 square meters per kg;
the concrete ash is powder with the particle size of 0.15mm left after waste concrete is crushed, classified and processed into recycled coarse aggregate and recycled fine aggregate; the 0.15mm powder is prepared into powder with the particle size of 5 mu m, namely concrete ash, by adopting a circulating grinding and primary closed-circuit powder selection process consisting of a high-fine mill and a K-type powder selector;
the steel slag powder is steel slag micro powder, converter or electric furnace steel slag is utilized, a pre-grinding closed circulation system and a final grinding closed circulation system are adopted, and the steel slag is processed into the steel slag powder with the particle size of 30 mu m through grinding and repeated iron removal processes;
the desulfurized gypsum adopts waste residue generated by flue gas desulfurization of a coal-fired power plant, and is beta-type semi-hydrated desulfurized gypsum after treatment of drying, calcining, grinding and the like, wherein the beta-type semi-hydrated desulfurized gypsum comprises the following components in percentage by weight: the beta-CaSO 4 and 1/2H2O are not less than 85 percent and are levigated until the specific surface area is not less than 500 square meters per kilogram;
the reclaimed sand is prepared from waste concrete, and the preparation method of the reclaimed sand comprises the following steps: crushing and processing the waste concrete into recycled coarse aggregate with the grain diameter of 5-40mm and recycled fine aggregate with the grain diameter of 0.15-5mm, namely recycled sand; cleaning and screening the reclaimed sand to obtain reclaimed sand with different meshes and grades: 20-40 meshes, 40-80 meshes and 80-120 meshes;
the water reducing agent is a powdery high-efficiency polycarboxylic acid water reducing agent, and the water reducing rate is 30%;
the defoaming agent is a powder defoaming agent;
the steel fiber is copper-plated steel fiber, the diameter is 0.25mm, and the length is 14 mm.
In the present embodiment, referring to fig. 1, the length and width of the cross section of the upright post 1 of the ultrahigh-performance concrete river fence are both 16cm, and the height of the upright post 1 is 120 cm; the length and width of the cross section of the crosspiece 2 correspond to 10cm and 6 cm; the length and width of the cross section of the vertical rail 3 are both 5 cm.
In this embodiment, referring to fig. 1, a method for manufacturing an ultra-high performance concrete riverway fence, which is to prepare an ultra-high performance concrete slurry, includes the following steps:
(1) preparing the ultra-high performance concrete:
respectively weighing 35kg of cement, 5kg of silica fume, 3kg of concrete fume, 8kg of steel slag powder, 3.5kg of desulfurized gypsum, 43.8kg of reclaimed sand, 0.35kg of water reducing agent and 0.15kg of defoaming agent, then sequentially putting the cement, the silica fume, the concrete fume, the steel slag powder, the desulfurized gypsum, the reclaimed sand, the water reducing agent and the defoaming agent into a mixer, stirring for 8 minutes, stirring uniformly, then adding 1.2kg of steel fiber, stirring for 10 minutes again, and fully and uniformly mixing to obtain the ultra-high performance concrete material;
(2) preparing the ultra-high performance concrete slurry:
putting the ultra-high performance concrete material into a vertical shaft planetary mixer, adding water for stirring, controlling the water-cement ratio to be 0.2, and stirring for 8 minutes to obtain ultra-high performance concrete slurry;
(3) the construction of the fence of the ultra-high performance concrete river channel comprises the following steps:
pouring the ultra-high performance concrete slurry into molds of the upright posts, the transverse bars and the vertical bars, and pouring to prepare the ultra-high performance concrete river fence; and after pouring, maintaining at normal temperature, removing the formwork the next day, and installing and constructing the river fence seven days later. When pouring, assembling grooves are reserved at the proper positions of the upright posts 1 and the crosspieces 2; the size of the upright column 1 is 16 multiplied by 16cm, and the height is 120 cm; the cross section of the crosspiece 2 is 6 multiplied by 10cm in size, and the length is selected to be suitable for construction according to design requirements; the size of the section of the vertical rail 3 is 5 multiplied by 5cm, and the length is selected according to the design requirement for suitable construction.
In this embodiment, after the ultrahigh performance concrete river fence is assembled, the fence can be coated with exterior wall paint, preferably silicone acrylic emulsion paint, and the color can be arbitrary, so that the ultrahigh performance concrete river fence can be decorated in an elegant appearance.
The ultrahigh-performance concrete river fence constructed in the embodiment is tested, the initial slump expansion is 710mm, the 1h slump expansion is 675mm, and the 28d shrinkage is 2.33 × 10-4The 28d compressive strength is 132MPa, the ultimate tensile strength is 9.8MPa, and the ultimate tensile strain is 0.3 percent.
Example two:
this embodiment is substantially the same as the first embodiment, and is characterized in that:
in this embodiment, referring to fig. 1, an ultra-high performance concrete riverway fence is made of ultra-high performance concrete, and the ultra-high performance concrete riverway fence is composed of a vertical column 1, a crosspiece 2 and a vertical crosspiece 3; taking 100kg of ultra-high performance concrete material as an example, the material composition of the ultra-high performance concrete is as follows: 32kg of cement, 4kg of silica fume, 4kg of concrete ash, 6kg of steel slag powder, 3kg of desulfurized gypsum, 49kg of reclaimed sand, 0.4kg of water reducing agent, 0.1kg of defoaming agent and 1.5kg of steel fiber.
The cement is 52.5-grade ordinary portland cement;
the silicon ash is an ultrafine silicon powder material generated in the process of smelting ferrosilicon and industrial silicon, the particles with the fineness of less than or equal to 1 mu m of the silicon ash are not less than 80 percent of the total mass of the silicon ash, the average particle size of the silicon ash particles is 0.1 mu m, and the specific surface area of the silicon ash is 28000 square meters per kg;
the concrete ash is powder with the particle size of 0.15mm left after waste concrete is crushed, classified and processed into recycled coarse aggregate and recycled fine aggregate; the 0.15mm powder is prepared into powder with the particle size of 5 mu m, namely concrete ash, by adopting a circulating grinding and primary closed-circuit powder selection process consisting of a high-fine mill and a K-type powder selector;
the steel slag powder is steel slag micro powder, converter or electric furnace steel slag is utilized, a pre-grinding closed circulation system and a final grinding closed circulation system are adopted, and the steel slag is processed into the steel slag powder with the particle size of 30 mu m through grinding and repeated iron removal processes;
the desulfurized gypsum adopts waste residue generated by flue gas desulfurization of a coal-fired power plant, and is beta-type semi-hydrated desulfurized gypsum after treatment of drying, calcining, grinding and the like, wherein the beta-type semi-hydrated desulfurized gypsum comprises the following components in percentage by weight: the beta-CaSO 4 and 1/2H2O are not less than 85 percent and are levigated until the specific surface area is not less than 500 square meters per kilogram;
the reclaimed sand is prepared from waste concrete, and the preparation method of the reclaimed sand comprises the following steps: crushing and processing the waste concrete into recycled coarse aggregate with the grain diameter of 5-40mm and recycled fine aggregate with the grain diameter of 0.15-5mm, namely recycled sand; cleaning and screening the reclaimed sand to obtain reclaimed sand with different meshes and grades: 20-40 meshes, 40-80 meshes and 80-120 meshes;
the water reducing agent is a powdery high-efficiency polycarboxylic acid water reducing agent, and the water reducing rate is 30%;
the defoaming agent is a powder defoaming agent;
the steel fiber is copper-plated steel fiber, the diameter of the steel fiber is 0.12mm, and the length of the steel fiber is 10 mm.
In the present embodiment, referring to fig. 1, the length and width of the cross section of the upright post 1 of the ultrahigh-performance concrete river fence are both 16cm, and the height of the upright post 1 is 120 cm; the length and width of the cross section of the crosspiece 2 correspond to 10cm and 6 cm; the length and width of the cross section of the vertical rail 3 are both 5 cm.
In this embodiment, referring to fig. 1, a method for manufacturing an ultra-high performance concrete riverway fence, which is to prepare an ultra-high performance concrete slurry, includes the following steps:
(1) preparing the ultra-high performance concrete:
weighing 32kg of cement, 4kg of silica fume, 4kg of concrete fume, 6kg of steel slag powder, 3kg of desulfurized gypsum, 49kg of reclaimed sand, 0.4kg of water reducing agent and 0.1kg of defoaming agent respectively, then sequentially putting the cement, the silica fume, the concrete fume, the steel slag powder, the desulfurized gypsum, the reclaimed sand, the water reducing agent and the defoaming agent into a mixer, stirring for 8 minutes, stirring uniformly, then adding 1.5kg of steel fiber, stirring for 10 minutes again, and fully and uniformly mixing to obtain the ultrahigh-performance concrete material;
(2) preparing the ultra-high performance concrete slurry:
putting the ultra-high performance concrete material into a vertical shaft planetary mixer, adding water for stirring, controlling the water-cement ratio to be 0.18, and stirring for 8 minutes to obtain ultra-high performance concrete slurry;
(3) the construction of the fence of the ultra-high performance concrete river channel comprises the following steps:
pouring the ultra-high performance concrete slurry into the molds of the upright posts, the transverse bars and the vertical bars, and pouring to prepare the ultra-high performance concrete river fence, curing at normal temperature after pouring, removing the mold in the next day, and using the slurry for installation and construction of the river fence after seven days. When pouring, assembling grooves are reserved at the proper positions of the upright posts 1 and the crosspieces 2; the size of the upright column 1 is 16 multiplied by 16cm, and the height is 120 cm; the cross section of the crosspiece 2 is 6 multiplied by 10cm in size, and the length is selected to be suitable for construction according to design requirements; the size of the section of the vertical rail 3 is 5 multiplied by 5cm, and the length is selected according to the design requirement for suitable construction.
In this embodiment, after the ultrahigh performance concrete river fence is assembled, the fence can be coated with exterior wall paint, preferably silicone acrylic emulsion paint, and the color can be arbitrary, so that the ultrahigh performance concrete river fence can be decorated in an elegant appearance. The ultrahigh-performance concrete river fence and the preparation method thereof realize resource utilization of solid wastes.
Tests on the ultrahigh-performance concrete river fence constructed in the embodiment show that the initial slump expansion degree is 705mm, the 1h slump expansion degree is 670mm, and the 28d shrinkage rate is 2.27 × 10-4The 28d compressive strength is 126MPa, the ultimate tensile strength is 10MPa, and the ultimate tensile strain is 0.35 percent.
The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the embodiments, and various changes and modifications can be made according to the purpose of the invention, and any changes, modifications, substitutions, combinations or simplifications made according to the spirit and principle of the technical solution of the present invention shall be equivalent substitutions, as long as the purpose of the present invention is met, and the present invention shall fall within the protection scope of the present invention as long as the technical principle and inventive concept of the ultra high performance concrete waterway barrier and the manufacturing method thereof are not departed from the technical principle and inventive concept of the present invention.
Claims (7)
1. The utility model provides an ultra high performance concrete river course fence which characterized in that: the fence is made of ultra-high performance concrete, and the ultra-high performance concrete riverway fence mainly comprises upright posts (1), crosspieces (2) and vertical crosspieces (3);
the ultra-high performance concrete comprises the following materials in percentage by weight:
2. the ultrahigh-performance concrete river fence according to claim 1, wherein the ultrahigh-performance concrete is prepared from the following materials in percentage by weight:
3. the ultra-high performance concrete waterway barrier of claim 1, wherein:
the cement is not less than 52.5-grade ordinary portland cement;
the silicon ash is made of superfine silicon powder materials generated in the process of smelting ferrosilicon and industrial silicon, the particles with the fineness less than or equal to 1 mu m of the silicon ash are not less than 80 percent of the total mass of the silicon ash, the average particle size of the silicon ash particles is 0.1-0.3 mu m, and the specific surface area of the silicon ash is 20000-28000 square meters per kg;
the concrete ash is powder with the particle size not larger than 0.15mm left after waste concrete is crushed, classified and processed into recycled coarse aggregate and recycled fine aggregate; the powder is prepared into powder with the grain diameter not more than 5 mu m, namely concrete ash, by adopting a circulating grinding and primary closed-circuit powder selection process consisting of a high-fine mill and a K-type powder selector;
the steel slag powder is steel slag micro powder, converter or electric furnace steel slag is utilized, a pre-grinding closed circulation system and a final grinding closed circulation system are adopted, and the steel slag is processed into the steel slag powder with the particle size not more than 30 mu m through grinding and repeated iron removal processes;
the desulfurized gypsum adopts waste residue generated by flue gas desulfurization of a coal-fired power plant, and is beta-type semi-hydrated desulfurized gypsum after treatment of drying, calcining, grinding and the like, wherein the beta-type semi-hydrated desulfurized gypsum comprises the following components in percentage by weight: the beta-CaSO 4 and 1/2H2O are not less than 85 percent and are levigated until the specific surface area is not less than 500 square meters per kilogram;
the reclaimed sand is prepared from waste concrete, and the preparation method of the reclaimed sand comprises the following steps: crushing and processing the waste concrete into recycled coarse aggregate with the grain diameter of 5-40mm and recycled fine aggregate with the grain diameter of 0.15-5mm, namely recycled sand; cleaning and screening the reclaimed sand to obtain reclaimed sand with different meshes and grades: 20-40 meshes, 40-80 meshes and 80-120 meshes;
the water reducing agent is a powdery high-efficiency polycarboxylic acid water reducing agent, and the water reducing rate is not lower than 30%;
the defoaming agent is a powder defoaming agent;
the steel fiber is copper-plated steel fiber, the diameter is 0.12-0.25mm, and the length is 10-14 mm.
4. The ultra-high performance concrete waterway barrier of claim 1, wherein: the length and width of the cross section of the upright post (1) are not higher than 16cm, and the height of the upright post (1) is not lower than 120 cm; the length and width of the cross section of the crosspiece (2) are not higher than 10cm and 6cm correspondingly; the length and width of the cross section of the vertical rail (3) are not higher than 5 cm.
5. The method for manufacturing the ultra-high performance concrete riverway fence according to claim 1, wherein the preparation of the ultra-high performance concrete slurry is carried out by the following steps:
putting the ultra-high performance concrete material into a vertical shaft planetary mixer, adding water for stirring, controlling the water-cement ratio to be 0.15-0.25, and stirring for 5-10 minutes to obtain ultra-high performance concrete slurry; then pouring the ultra-high performance concrete slurry into molds of the upright posts, the crosspieces and the vertical shelves, and pouring so as to prepare the ultra-high performance concrete river fence; and after pouring, maintaining at normal temperature, removing the formwork the next day, and installing and constructing the river fence seven days later.
6. The method of claim 5, wherein the method comprises the steps of: controlling the water cement ratio to be 0.18-0.20, and stirring for 8-10 minutes to obtain the ultra-high performance concrete slurry.
7. The method for manufacturing the ultra-high performance concrete waterway barrier of claim 5, wherein the method for manufacturing the ultra-high performance concrete comprises the following steps:
the method comprises the following steps of weighing and proportioning the materials according to the material composition and weight percentage content of the ultra-high performance concrete, sequentially putting cement, silica fume, concrete ash, steel slag powder, desulfurized gypsum, reclaimed sand, a water reducing agent and a defoaming agent into a mixer, stirring for 8-10 minutes, stirring uniformly, then adding steel fibers, stirring for 10-12 minutes, and fully and uniformly mixing to obtain the ultra-high performance concrete material.
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| CN202010510220.4A CN111747703A (en) | 2020-06-08 | 2020-06-08 | Ultrahigh-performance concrete river fence and manufacturing method thereof |
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| CN202010510220.4A Pending CN111747703A (en) | 2020-06-08 | 2020-06-08 | Ultrahigh-performance concrete river fence and manufacturing method thereof |
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