CN119330656A - Concrete for tunnel anti-collision wall and preparation method and application thereof - Google Patents

Concrete for tunnel anti-collision wall and preparation method and application thereof Download PDF

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Publication number
CN119330656A
CN119330656A CN202411292714.4A CN202411292714A CN119330656A CN 119330656 A CN119330656 A CN 119330656A CN 202411292714 A CN202411292714 A CN 202411292714A CN 119330656 A CN119330656 A CN 119330656A
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concrete
parts
tunnel
carbon
mineralized
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CN119330656B (en
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王振地
何健辉
方俊
王玲
刘佳卿
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China Building Materials Academy CBMA
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China Building Materials Academy CBMA
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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
    • 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
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
    • 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
    • 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
    • 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The application relates to the technical field of concrete, and particularly discloses concrete for a tunnel anti-collision wall and a preparation method and application thereof. The concrete for the tunnel anti-collision wall comprises, by weight, 180-220 parts of cement, 70-110 parts of a carbon mineralized mineral material, 10-15 parts of hollow glass microspheres, 1-1.6 parts of a foaming agent, 0.4-0.7 part of a foam stabilizer, 3-9 parts of a water reducer, 0.6-2 parts of fibers and 130-180 parts of mixing water, wherein the preparation method of the carbon mineralized mineral material comprises the steps of taking 100-300 parts by weight of the mineral material, 10-50 parts by weight of water, injecting 20% -100% CO 2,CO2 with the flow rate of 1-3L/min, grinding for 20-60 min at 400-600 rpm, drying to constant weight, and finely grinding and sieving. The concrete for the tunnel anti-collision wall has the advantages of long-term stable collapse energy absorption, excellent impact toughness and excellent freeze thawing resistance.

Description

Concrete for tunnel anti-collision wall and preparation method and application thereof
Technical Field
The application relates to the technical field of concrete, in particular to concrete for a tunnel anti-collision wall and a preparation method and application thereof.
Background
Tunnels play a vital role in highways, railways and urban traffic networks as an important component of modern traffic infrastructure. With the increase of traffic flow and the increase of vehicle running speed, traffic safety problems in tunnels are increasingly prominent. The closed environment and space limitation of the tunnel make rescue and evacuation more difficult when traffic accidents occur. Therefore, preventing the vehicle from colliding with the tunnel wall and reducing the occurrence of traffic accidents becomes one of important considerations in tunnel design and construction.
At present, common tunnel anticollision measures mainly comprise arranging anticollision guardrails, anticollision piers, anticollision walls and the like. Conventional tunnel anti-collision walls are generally made of concrete, reinforced concrete or metal materials, and resist the impact force of a vehicle collision with high strength and durability. However, the anti-collision wall has the defects of over-strong rigidity, high construction difficulty, high maintenance cost, high material cost and the like in practical application.
Aiming at the problems, the patent CN108004986B provides a tunnel anti-collision wall template reinforcing system and a construction method, so as to solve the quality problems of poor concrete forming quality, uneven internal and external corners, slurry leakage and the like which are easy to cause in the prior art. Patent CN217440044U provides a device for installing and removing steel templates of a portable tunnel anti-collision wall. However, said invention uses the hard materials of concrete and steel structure as the base body of anti-collision wall, so that it is difficult to absorb the impact force of accident vehicle, and the tunnel structure is damaged.
Therefore, a new type of tunnel anti-collision wall and a method for manufacturing the same are needed to improve the energy absorbing capacity of the anti-collision wall, simplify the construction process, and reduce the maintenance cost and the material cost, thereby improving the overall safety and economy of the tunnel.
Disclosure of Invention
In order to overcome the defects in the prior art, the application provides concrete for a tunnel anti-collision wall, and a preparation method and application thereof.
The application provides concrete for tunnel anti-collision walls, which comprises, by weight, 180-220 parts of cement, 70-110 parts of carbon mineralized mineral materials, 10-15 parts of hollow glass microspheres, 1-1.6 parts of foaming agents, 0.4-0.7 part of foam stabilizers, 3-9 parts of water reducers, 0.6-2 parts of fibers and 130-180 parts of mixing water;
the mixing water is at least one selected from sodium bicarbonate water solution and carbonated water;
the preparation method of the carbon mineralized mineral material comprises the following steps:
Weighing 100-300 parts by weight of mineral materials, 10-50 parts by weight of water, placing the mineral materials into a grinding tank provided with ball milling beads, injecting 20-100% CO 2,CO2 at a flow rate of 1-3L/min, grinding at 400-600 rpm for 20-60 min, drying to constant weight, and mashing and sieving to obtain the mineral materials, wherein the mineral materials are one or more of carbon-mineralized yellow phosphorus slag, carbon-mineralized carbide slag, carbon-mineralized cement clinker, carbon-mineralized steel slag and carbon-mineralized magnesium slag.
According to the technical scheme, the carbon mineralized mineral material is prepared, cement, the carbon mineralized mineral material, the hollow glass beads, the foaming agent, the foam stabilizer, the water reducing agent, the fiber and the mixing water which are used as raw material components of the concrete are selected in the specific dosage, and the prepared concrete for the tunnel anti-collision wall has the advantages of long-term stable collapse energy absorption and excellent impact toughness and freeze thawing resistance.
Preferably, the particle size of the hollow glass beads is less than or equal to 60 mu m, and the true density is less than or equal to 0.6g/cm 3.
Preferably, the foaming agent is hydrogen peroxide with the mass concentration of 10-35%.
In some specific embodiments, the mass concentration of the hydrogen peroxide may be 10-20%, 20-35%.
In a specific embodiment, the mass concentration of the hydrogen peroxide may be 10%, 20% or 35%.
According to experimental analysis, the application selects the hydrogen peroxide with the mass concentration as the foaming agent, so that the performance of the concrete can be further improved.
Preferably, the foam stabilizer is selected from one or more of methyl cellulose ether (MC), hydroxyethyl cellulose ether (HEC), hydroxyethyl methyl cellulose ether (HEMC), hydroxypropyl methyl cellulose ether (HPMC), stearate series foam stabilizer, styrene-butadiene emulsion, ethylene-vinyl acetate emulsion.
Further, the foam stabilizer is formed by mixing hydroxypropyl methyl cellulose ether and butylbenzene emulsion in a weight ratio of 7:0.5-1.5.
Experimental analysis shows that the foam stabilizer prepared by mixing the hydroxypropyl methyl cellulose ether and the styrene-butadiene emulsion in the weight ratio can further improve the performance of the concrete.
Preferably, the water reducer is selected from one or more of polycarboxylic acid water reducer and naphthalene water reducer.
Preferably, the fibers are selected from one or more of polypropylene fibers, polyvinyl alcohol fibers, carbon fibers.
Preferably, the mixing water is sodium bicarbonate water solution with the molar concentration of 0.10-0.75 mol/L.
In some embodiments, the molar concentration of the aqueous sodium bicarbonate solution may be 0.10～0.25mol/L、0.10～0.4mol/L、0.10～0.55mol/L、0.25～0.4mol/L、0.25～0.55mol/L、0.25～0.75mol/L、0.4～0.55mol/L、0.4～0.75mol/L、0.55～0.75mol/L.
In a specific embodiment, the molar concentration of the aqueous sodium bicarbonate solution may also be 0.10mol/L, 0.25mol/L, 0.4mol/L, 0.55mol/L, 0.75mol/L.
As proved by experimental analysis, the application selects the sodium bicarbonate aqueous solution with the molar concentration as the mixing water, so that the performance of the concrete can be further improved.
Based on the above, the inventors of the present application found that in the formulation system for preparing concrete for tunnel anti-collision wall, the foaming agent, the foam stabilizer, the mixing water and the carbon mineralized mineral material have mutual selectivity, and the raw material types of different types of specifications have a great influence on the impact toughness and the freeze thawing resistance of the concrete.
The application provides a preparation method of the concrete for the tunnel anti-collision wall, which specifically comprises the following steps of:
Firstly, weighing cement, a carbon mineralized mineral material, hollow glass beads and fibers, and then pouring the mixture into a stirrer to mix for 10-60 s uniformly;
Mixing water, a foam stabilizer and a water reducer, stirring at a rotation speed of 200-600 rpm for 60-600 s, and stirring at a rotation speed of 1000-3000 rpm for 10-60 s;
Adding a foaming agent, and stirring at a rotating speed of 1000-3000rpm for 10-60s to obtain slurry;
pouring the slurry into a mold with a mortise and tenon structure, and standing for 0.5-2 h for foaming;
and (5) placing the mixture in a curing room for curing for 24-48 hours, and then demolding and continuously curing until 28-180 d.
In a third aspect, the application provides a tunnel anti-collision wall, which is prepared from the concrete for tunnel anti-collision wall.
The method for preparing the tunnel anti-collision wall comprises the following steps of transporting the well-maintained concrete for the tunnel anti-collision wall to a pre-paving position of the tunnel anti-collision wall, splicing and assembling a module body with a mortise and tenon structure, and installing a panel on the module body to obtain the tunnel anti-collision wall.
In summary, the technical scheme of the application has the following effects:
By adopting the technical scheme of the application, the defects of low recycling utilization efficiency of yellow phosphorus slag and carbide slag, large environmental pollution, large dust, low efficiency and high energy consumption of cement clinker, steel slag and magnesium slag in the traditional grinding process are overcome. Under the action of mechanical and chemical coupling, the particle size of yellow phosphorus slag and carbide slag is reduced, the ion dissolution rate is accelerated, calcite, aragonite and vaterite CaCO 3 are generated in the process of carbon mineralization reaction, and the products are in overlap joint mutually, and serve as reactants, nucleating agents and inert fillers with larger specific surface areas in the hydration process. The mechanical-chemical coupling effect can destroy the passivation layer on the surface of the material to form a new surface for carbon mineralization, further increases the absorption amount of carbon dioxide from the raw material end, reduces the carbon emission in the building material industry, and has important environmental protection significance. In addition, ca (OH) 2 which is not fully mineralized by carbon and is present in carbide slag can improve the further hydration of cement and stabilize the mechanical properties of the matrix.
According to the technical scheme, the sodium bicarbonate aqueous solution and the carbonated water are used as mixing water, so that the carbon dioxide absorption effect is improved, the HCO 3 -/CO3 2- rich in the aqueous solution can accelerate the hydration of the slurry, the effect of a similar accelerator is achieved, no additional coagulation accelerating component is needed, the early strength is ensured to be increased, the use efficiency of the die is improved, and the production efficiency is improved.
The concrete for the tunnel anti-collision wall, which is prepared by the technical scheme of the application, has the crushing degree of 0.5-0.6, the crushing strength of 0.30-0.40 MPa and the impact toughness of more than 6000J, can stably crush and absorb energy for a long time according to design standards, provides a buffering effect required by emergency avoidance for various accident vehicles, and ensures the safety of vehicles and personnel.
According to the technical scheme, the specific screening foaming agent, the foam stabilizer and the mixing water have a synergistic effect with the carbon mineralized mineral material, so that a more excellent technical effect is generated, and the freeze-thawing resistance of the prepared concrete is further improved.
According to the technical scheme, the blocks with the mortise and tenon structures are convenient and quick to splice and install, and can be tightly fixed together without using additional surface adhesives, so that the engineering cost is reduced, the construction efficiency and the stability of the whole structure are improved, and after the tunnel anti-collision wall is used, the blocks are directly replaced or repaired, so that the use cost is greatly reduced.
Drawings
FIG. 1 is a schematic view of a tunnel anti-collision wall of the application, and reference numerals are 1-road surface, 2-anti-collision wall, 3-side wall and 4-roof.
Detailed Description
The present application is described in further detail below in conjunction with examples, comparative examples and performance test experiments, which should not be construed as limiting the scope of the application as claimed.
Yellow phosphorus slag from Guizhou phosphating plant, carbide slag from Henan five lake environmental protection technology Co., ltd, polycarboxylate water reducer from Jiangsu Su Bote New Material Co., ltd, polyvinyl alcohol fiber from Anhui Wanwei group Co., ltd, hydroxyethyl cellulose ether from Shandong Feichun Yutian chemical Co., ltd, styrene-butadiene emulsion from Shandong Kaiki chemical Co., ltd, hydroxypropyl methyl cellulose ether from Shijia Wen wood cellulose trade Co., ltd, ethylene-vinyl acetate emulsion from Guangzhou loyal high chemical Co., ltd.
Examples
Examples 1 to 5
Examples 1-5 respectively provide concrete for tunnel anti-collision walls and a preparation method thereof.
The difference between the above examples is that the amounts of the respective components in the concrete for tunnel anti-collision wall are different, as shown in Table 1.
The preparation method of the concrete for the tunnel anti-collision wall in the embodiment comprises the following steps:
The preparation of the carbon mineralized mineral material comprises weighing 2000g (1500 g of carbon mineralized yellow phosphorus slag and 500g of carbon mineralized carbide slag) of mineral material, placing 250g of water into a grinding tank with ball milling beads, injecting 50% CO 2,CO2 at a flow rate of 2L/min, grinding at 200rpm for 40min, drying to constant weight, and grinding to 75 μm;
Firstly, weighing ordinary Portland cement, a carbon mineralized mineral material, hollow glass beads (particle size of 50 mu m, real density of 0.5g/cm 3) and polyvinyl alcohol fibers, and then pouring the mixture into a stirrer to mix for 40s until uniform;
adding 0.4mol/L sodium bicarbonate aqueous solution, mixing water, a foam stabilizer (formed by mixing hydroxypropyl methyl cellulose ether and styrene-butadiene emulsion in a weight ratio of 7:1) and a polycarboxylate water reducer, stirring at 400rpm for 360s, and stirring at 2000rpm for 30s;
Adding a hydrogen peroxide foaming agent with the mass concentration of 20%, and stirring for 30s at a rotating speed of 2000rpm to obtain slurry;
pouring the slurry into a 1500mm multiplied by 500mm multiplied by 900mm mold with a mortise and tenon structure, standing for 1h for foaming;
and (5) placing the mixture in a curing room for curing for 36 hours, and then demolding and continuing curing.
TABLE 1 amounts of the respective components in the concrete for tunnel anti-collision wall of examples 1 to 5
Examples 6 to 9
Examples 6-9 respectively provide concrete for tunnel anti-collision walls and a preparation method thereof.
The above-described embodiment differs from embodiment 1 in the kind of the mixing water, as shown below.
In example 6, an aqueous sodium hydrogencarbonate solution was mixed with water at 0.10 mol/L.
In example 7, an aqueous sodium hydrogencarbonate solution was mixed with water at 0.25 mol/L.
In example 8, an aqueous sodium hydrogencarbonate solution was mixed with water at 0.55 mol/L.
In example 9, an aqueous sodium hydrogencarbonate solution was mixed with water at 0.75 mol/L.
The remaining process parameters in the above examples are the same as in example 1.
Examples 10 to 14
Embodiments 10 to 14 respectively provide concrete for a tunnel anti-collision wall and a preparation method thereof.
The above examples differ from example 1 in particular in the type of foam stabilizer, as shown below.
In the embodiment 10, the foam stabilizer is formed by mixing hydroxyethyl cellulose ether and styrene-butadiene emulsion in a weight ratio of 7:1.
In example 11, the foam stabilizer was composed of a mixture of hydroxypropyl methylcellulose ether and an ethylene-vinyl acetate emulsion in a weight ratio of 7:1.
In example 12, the foam stabilizer is prepared by mixing hydroxypropyl methyl cellulose ether and styrene-butadiene emulsion in a weight ratio of 1:7.
In example 13, the foam stabilizer was composed of a mixture of hydroxypropyl methylcellulose ether and styrene-butadiene emulsion in a weight ratio of 7:0.5.
In example 14, the foam stabilizer is prepared by mixing hydroxypropyl methyl cellulose ether and styrene-butadiene emulsion in a weight ratio of 7:1.5.
The remaining process parameters in the above examples are the same as in example 1.
Comparative example
Comparative examples 1 to 5
Comparative examples 1 to 5 provide a concrete and a method for preparing the same, respectively.
The comparative example is different from example 1 in that the amounts of the respective components in the concrete for a tunnel impact wall are different, as shown in Table 1.
The remaining process parameters in the above comparative example were the same as in example 1.
Comparative example 6
Comparative example 6 provides a concrete and a method of preparing the same.
Comparative example 6 differs from example 1 in the method of preparing a carbonaceous mineralized mineral material, as specifically shown below.
In comparative example 6, a carbonaceous mineralized mineral material was prepared by weighing 2000g (1500 g of carbonaceous mineralized yellow phosphorus slag, 500g of carbonaceous mineralized carbide slag) in total, 250g of water, putting into a milling pot equipped with ball milling beads, starting milling at 200rpm for 40min, then drying to constant weight, and mashing and sieving with 75 μm sieve;
The remaining process parameters in comparative example 6 were the same as in example 1.
Performance test
After the concrete prepared in examples and comparative examples was cured to 28d, the degree of crushing, the crushing strength and the impact toughness were measured, respectively.
The detection method of the crushing degree comprises the steps of detecting and calculating according to the MH/T5111-2015 requirement.
The test method of the collapse strength comprises the steps of cutting a test piece with the thickness of 100mm multiplied by 100mm from a test block, baking the test piece to constant weight according to the requirements of MH/T5111-2015, placing the test piece in a square constraint frame, placing the test piece under a compression rod of a universal testing machine, enabling the center line of the test piece to coincide with the center of the compression rod, starting the universal material testing machine, recording stress and collapse depth in the compression process, and drawing a collapse curve of each age. The average value of stress data at 15-45 mm of the crushing curve platform section is taken as the crushing strength.
The impact toughness detection method comprises the steps of detecting and calculating impact energy consumption by referring to a drop hammer impact method of ACI-544-2R-89.
Freeze-thaw resistance after subjecting the concrete to 25 freeze-thaw cycles according to the MH/T5111-2015 specifications, impact toughness was measured.
The results are shown in Table 2.
Table 2 results of performance test of the concrete in examples and comparative examples
By combining the table 2 with the performance detection results of the concrete in the comparative examples, it is known that the concrete prepared by the technical scheme provided by the application has a crushing degree of 0.5-0.6, a crushing strength of 0.30-0.40 MPa, an impact toughness of more than 6100J, and a freezing resistance coefficient of more than 0.855 after a freezing and thawing test.
According to the application, by comparing the performance detection results of the concrete in examples 1 and 6-9, the impact toughness and the freeze-thawing resistance of the concrete can be further improved by selecting the sodium bicarbonate aqueous solution with the molar concentration of 0.10-0.75 mol/L as the mixing water.
According to the performance detection results of the concrete in the comparative examples 1 and 10-14, the application selects the hydroxypropyl methyl cellulose ether and the styrene-butadiene emulsion with the weight ratio of 7:0.5-1.5 to be mixed to form the foam stabilizer, so that the impact toughness and the freeze-thawing resistance of the concrete can be further improved.
While the invention has been described in detail in the foregoing general description and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.

Claims (10)

1.一种隧道防撞墙用混凝土，其特征在于，具体包括以下重量份的组分：1. A concrete for tunnel crash barriers, characterized in that it specifically comprises the following components in parts by weight: 水泥180~220份、碳矿化矿物材料70~110份、空心玻璃微珠10~15份、发泡剂1~1.6份、稳泡剂0.4~0.7份、减水剂3~9份、纤维0.6~2份、拌合水130~180份；180-220 parts of cement, 70-110 parts of carbon mineralized mineral materials, 10-15 parts of hollow glass microspheres, 1-1.6 parts of foaming agent, 0.4-0.7 parts of foam stabilizer, 3-9 parts of water reducer, 0.6-2 parts of fiber, 130-180 parts of mixing water; 所述拌和水选自碳酸氢钠水溶液、碳酸水中的至少一种；The mixing water is selected from at least one of a sodium bicarbonate aqueous solution and carbonated water; 所述碳矿化矿物材料的制备方法为：The preparation method of the carbon mineralized mineral material is: 称取矿物材料共计100~300重量份，水10~50重量份，放入配有球磨珠的研磨罐中；注入20%~100% CO2，CO2流速为1~3L/min，同时以400~600rpm开始研磨20~60min；然后烘干至恒重，捣细过筛，即得；所述矿物材料选自碳矿化黄磷渣、碳矿化电石渣、碳矿化水泥熟料、碳矿化钢渣、碳矿化镁渣中的一种或多种。Weigh a total of 100-300 parts by weight of mineral materials and 10-50 parts by weight of water, and put them into a grinding jar equipped with ball mill beads; inject 20%-100% CO 2 with a CO 2 flow rate of 1-3 L/min, and start grinding at 400-600 rpm for 20-60 min; then dry to constant weight, pound and sieve to obtain; the mineral material is selected from one or more of carbon mineralized yellow phosphorus slag, carbon mineralized carbide slag, carbon mineralized cement clinker, carbon mineralized steel slag, and carbon mineralized magnesium slag. 2.根据权利要求1所述的隧道防撞墙用混凝土，其特征在于，所述空心玻璃微珠粒径≤60μm，真实密度≤0.6g/cm3。2 . The concrete for tunnel crash barrier according to claim 1 , wherein the hollow glass microspheres have a particle size of ≤60 μm and a true density of ≤0.6 g/cm 3 . 3.根据权利要求1所述的隧道防撞墙用混凝土，其特征在于，所述发泡剂为质量浓度为10~35%的双氧水。3. The concrete for tunnel crash barriers according to claim 1 is characterized in that the foaming agent is hydrogen peroxide with a mass concentration of 10-35%. 4.根据权利要求1所述的隧道防撞墙用混凝土，其特征在于，所述稳泡剂选自甲基纤维素醚、羟乙基纤维素醚、羟乙基甲基纤维素醚、羟丙基甲基纤维素醚、硬脂酸盐系列稳泡剂、丁苯乳液、乙烯-醋酸乙烯酯乳液中的一种或多种。4. The concrete for tunnel crash barriers according to claim 1 is characterized in that the foam stabilizer is selected from one or more of methyl cellulose ether, hydroxyethyl cellulose ether, hydroxyethyl methyl cellulose ether, hydroxypropyl methyl cellulose ether, stearate series foam stabilizers, styrene-butadiene emulsion, and ethylene-vinyl acetate emulsion. 5.根据权利要求4所述的隧道防撞墙用混凝土，其特征在于，所述稳泡剂由重量比为7：0.5-1.5的羟丙基甲基纤维素醚、丁苯乳液混合组成。5. The concrete for tunnel crash barriers according to claim 4 is characterized in that the foam stabilizer is composed of a mixture of hydroxypropyl methylcellulose ether and styrene butadiene emulsion in a weight ratio of 7:0.5-1.5. 6.根据权利要求1所述的隧道防撞墙用混凝土，其特征在于，所述纤维选自聚丙烯纤维、聚乙烯醇纤维、碳纤维中的一种或多种。6. The concrete for tunnel crash barriers according to claim 1, characterized in that the fibers are selected from one or more of polypropylene fibers, polyvinyl alcohol fibers, and carbon fibers. 7.根据权利要求1所述的隧道防撞墙用混凝土，其特征在于，所述拌和水为摩尔浓度为0.10~0.75mol/L的碳酸氢钠水溶液。7. The concrete for tunnel crash barriers according to claim 1, characterized in that the mixing water is a sodium bicarbonate aqueous solution with a molar concentration of 0.10-0.75 mol/L. 8.权利要求1-7任一项所述的隧道防撞墙用混凝土制备方法，其特征在于，具体包括依次进行以下步骤：8. The method for preparing concrete for tunnel crash wall according to any one of claims 1 to 7, characterized in that it specifically comprises the following steps in sequence: 先称取水泥、碳矿化矿物材料、空心玻璃微珠及纤维，然后倒入搅拌机内混合10~60s至均匀；First, weigh cement, carbon mineralized mineral material, hollow glass microspheres and fibers, then pour them into a mixer and mix for 10 to 60 seconds until they are uniform; 加入拌和水、稳泡剂、减水剂，先以200~600rpm的转速搅拌60~600s，再以1000~3000rpm的转速搅拌10~60s；Add mixing water, foam stabilizer and water reducer, stir at 200-600rpm for 60-600s, then stir at 1000-3000rpm for 10-60s; 加入发泡剂，以1000~3000rpm的转速搅拌10~60s得到浆体；Add a foaming agent and stir at a speed of 1000-3000 rpm for 10-60 seconds to obtain a slurry; 将浆体浇筑于带有榫卯结构的模具中，静停0.5~2h发泡；Pour the slurry into a mold with a mortise and tenon structure and let it stand for 0.5-2 hours to foam; 置于养护室中养护24~48h后脱模后继续养护至28~180d，即得。Place it in a curing room for 24 to 48 hours, then demould and continue curing for 28 to 180 days. 9.一种隧道防撞墙，其特征在于，利用权利要求1-7任一项所述的隧道防撞墙用混凝土制备得到。9. A tunnel crash barrier, characterized in that it is prepared using the concrete for tunnel crash barriers according to any one of claims 1 to 7. 10.权利要求9所述隧道防撞墙的制备方法，其特征在于，具体包括依次进行以下步骤：10. The method for preparing the tunnel crash barrier according to claim 9, characterized in that it specifically comprises the following steps in sequence: 将养护好的所述隧道防撞墙用混凝土运输至隧道防撞墙预铺装位置，将一块块带有榫卯结构的模块体拼接组装，在模块体上安装面板，即得所述隧道防撞墙。The tunnel crash barrier is transported to a pre-paved position of the tunnel crash barrier with concrete after curing, and the module bodies with mortise and tenon structures are spliced and assembled one by one, and the panels are installed on the module bodies to obtain the tunnel crash barrier.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107287431A (en) * 2017-06-22 2017-10-24 河钢股份有限公司承德分公司 A kind of method for reclaiming vanadium in vanadium containing steel slag element
CN109516754A (en) * 2018-12-14 2019-03-26 北京市住宅产业化集团股份有限公司 A kind of light phase transition air entrained concrete, masonry wall and its construction method
CN115215586A (en) * 2022-05-30 2022-10-21 湖北工业大学 A method for preparing autoclaved aerated concrete bricks by wet grinding and carbon fixing of carbide slag
CN115784769A (en) * 2022-08-02 2023-03-14 华润水泥技术研发有限公司 Foam concrete based on high-activity calcium-based carbon absorption and preparation method thereof
CN116177959A (en) * 2023-03-06 2023-05-30 湖北工业大学 A preparation method of carbonized 3D printing foam concrete
CN117865588A (en) * 2023-12-06 2024-04-12 中南大学 Preparation method of low-carbon ultra-high early strength and toughness cement-based material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107287431A (en) * 2017-06-22 2017-10-24 河钢股份有限公司承德分公司 A kind of method for reclaiming vanadium in vanadium containing steel slag element
CN109516754A (en) * 2018-12-14 2019-03-26 北京市住宅产业化集团股份有限公司 A kind of light phase transition air entrained concrete, masonry wall and its construction method
CN115215586A (en) * 2022-05-30 2022-10-21 湖北工业大学 A method for preparing autoclaved aerated concrete bricks by wet grinding and carbon fixing of carbide slag
CN115784769A (en) * 2022-08-02 2023-03-14 华润水泥技术研发有限公司 Foam concrete based on high-activity calcium-based carbon absorption and preparation method thereof
CN116177959A (en) * 2023-03-06 2023-05-30 湖北工业大学 A preparation method of carbonized 3D printing foam concrete
CN117865588A (en) * 2023-12-06 2024-04-12 中南大学 Preparation method of low-carbon ultra-high early strength and toughness cement-based material

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