High-performance concrete material and preparation method of electric pole

Abstract

The invention relates to the technical field of concrete preparation, in particular to a high-performance concrete material and an electric pole preparation method. The preparation method of the high-performance concrete material comprises the following steps: compounding oleic acid with mesoporous activated carbon; preparing a composite phase change material; preparing shale ceramsite; preparing a phase change aggregate; and preparing the high-performance concrete material. A carbon-based material mesoporous activated carbon is introduced into oleic acid, and the oleic acid is attached to the surface of the mesoporous activated carbon and is filled in micropores of the mesoporous activated carbon by utilizing a porous structure of the mesoporous activated carbon, so that the aggregation degree of the oleic acid is improved, and a composite material structure in which the mesoporous activated carbon is wrapped by the oleic acid is formed; compared with single oleic acid, the composite material formed by oleic acid and mesoporous activated carbon has better high and low temperature stability, and the high and low temperature stability of a phase change material taking fatty acid as one of raw materials can be improved by introducing a carbon-based material into fatty acid, so that the high and low temperature stability of a concrete material is improved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete preparation, and in particular to a high-performance concrete material and a method for preparing an electric pole. Background Art

[0002] Concrete is an artificial stone material made of cement, water, fine aggregate, coarse aggregate and possible additives. Among them, high-performance concrete usually achieves higher strength, better workability and durability by optimizing the mix ratio and adding high-efficiency admixtures. Concrete materials with high strength and durability can be used to prepare electric poles.

[0003] Electric poles are vertical structures used to support wires, cables and other power equipment to ensure safe and stable power transmission. They are made of threaded steel or ordinary round steel, which are tied or welded to form a mesh structure to provide tensile strength and overall stability. They are then poured into vertical structures through concrete to ensure that the poles have sufficient compressive strength and durability.

[0004] Usually, in order to ensure the load-bearing capacity and compressive strength of electric poles, prestressed steel bars are also arranged therein. By applying prestress, the crack resistance and load-bearing capacity of the electric poles are improved, and the risk of deformation and cracking during long-term use is reduced. However, the installation and construction of prestressed steel bars are relatively complicated, requiring precise design and construction. In addition, since the position of each electric pole is different, the prestressed steel bars need to be adjusted according to the situation, which is very labor-intensive. Therefore, the present invention provides a high-performance concrete material and a method for preparing an electric pole, which achieves the effect of improving the compressive strength of the electric pole by improving the compressive strength of the concrete material. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a high-performance concrete material and a method for preparing an electric pole.

[0006] The method for preparing high performance concrete material comprises the following steps:

[0007] S1: Oleic acid composite mesoporous activated carbon

[0008] The anhydrous ethanol is heated, and oleic acid is added, and the mixture is stirred. Then, mesoporous activated carbon is added while the mixture is stirred, and the mixture is dried, ground, and sieved to obtain an oleic acid / activated carbon composite material.

[0009] S2: Preparation of composite phase change materials

[0010] Methyl methacrylate, methyl erucate and oleic acid / activated carbon composite material are mixed to obtain a mixed organic matter, Span-80, Tween-80 and ammonium persulfate are added into deionized water, stirred evenly to obtain a mixed solution, the obtained mixed organic matter is mixed with the mixed solution, stirred to form an emulsion, and then the emulsion is transferred to a stirrer, heated and stirred, and then the filtrate is removed by filtering, washed, and dried to obtain a composite phase change material;

[0011] S3: Preparation of shale ceramsite

[0012] Boron mud, oil shale slag, fly ash, binder and pore-forming agent are added to a ball mill, and then pure water is added for ball milling and drying to obtain mud blocks, which are then formed in a molding machine to form spherical particles to obtain raw material balls. After the raw material balls are put into a kiln, they are preheated by heating, and then continue to heat up, keep warm for reaction, and finally seal the kiln for natural cooling to obtain shale ceramsite.

[0013] S4: Preparation of phase change aggregate

[0014] The shale ceramsite is dried to a constant weight to obtain dry shale ceramsite, the composite phase change material is heated to a molten state, and then the dry shale ceramsite is added to the molten composite phase change material, stirred, transferred to a vacuum drying oven, soaked, then filtered, and allowed to stand to obtain a phase change aggregate;

[0015] S5: Preparation of high performance concrete materials

[0016] 60-64 parts by mass of sand, 110-120 parts by mass of gravel, 42-44 parts by mass of cement and 80-90 parts by mass of phase change aggregate are premixed for 30-60 seconds, then 10-15 parts by mass of pure water are added and stirred for 60-70 seconds, and then 10-15 parts by mass of pure water are added and stirred for 12-14 seconds to obtain a high performance concrete material.

[0017] Furthermore, step S1 oleic acid composite mesoporous activated carbon comprises the following steps:

[0018] S1.1: Heat 40-45 parts by weight of anhydrous ethanol to 75-80°C, add 10-18 parts by weight of oleic acid, and stir at a speed of 200-300 r / min for 10-15 min, then add 4-8 parts by weight of mesoporous activated carbon while maintaining stirring, and stir for 3-3.5 h;

[0019] S1.2: Then place in an oven at 80-85°C to dry for 72-75h, cool to 24-26°C, and grind through a 200-mesh sieve to obtain an oleic acid / activated carbon composite material.

[0020] Furthermore, step S2 of preparing the composite phase change material comprises the following steps:

[0021] S2.1: mixing 10-12 parts by mass of methyl methacrylate, 8-9 parts by mass of methyl erucate and 1.5-2.5 parts by mass of oleic acid / activated carbon composite material to obtain a mixed organic matter;

[0022] S2.2: Add 0.4-0.8 parts by mass of Span-80, 0.8-1 parts by mass of Tween-80 and 0.25-0.75 parts by mass of ammonium persulfate to 85-95 parts by mass of deionized water, stir well, and obtain a mixed solution;

[0023] S2.3: The obtained mixed organic matter is mixed with the mixed solution, and stirred at a speed of 8000-8200 r / min for 5-10 minutes by a high-speed homogenizer to form an emulsion, and then the emulsion is transferred to a stirrer, heated to 85-90°C, and stirred at a speed of 300-350 r / min for 6-7 hours, and then the filtrate is removed by filtering, and the filter residue is washed twice with deionized water, and then dried in an oven at 45-50°C for 24-25 hours to obtain a composite phase change material.

[0024] Furthermore, step S3 of preparing shale ceramsite comprises the following steps:

[0025] S3.1: Add 2-5 parts by mass of boron mud, 15-25 parts by mass of oil shale slag, 10-15 parts by mass of fly ash, 1-3 parts by mass of binder and 2-4 parts by mass of pore former into a ball mill, then add 50-60 parts by mass of pure water for ball milling, transfer to a mud press after ball milling for 40-60 minutes, squeeze out the water and dry to obtain mud blocks;

[0026] S3.2: crushing the mud into powder and then forming it in a molding machine to form spherical particles with a diameter of 2-8 mm to obtain raw material balls;

[0027] S3.3: After the raw material balls are put into the kiln, the temperature is raised to 400-500℃, and preheated at a constant temperature for 20-25min. Then the temperature is continued to be raised to 1100-1250℃, and kept warm for 15-20min. The heating is stopped, the kiln is sealed, and naturally cooled to room temperature of 20℃ to obtain shale expanded clay.

[0028] Furthermore, step S4 of preparing phase change aggregate comprises the following steps:

[0029] S4.1: drying the shale ceramsite in an oven at 105-110°C to constant weight to obtain dry shale ceramsite;

[0030] S4.2: heating the composite phase change material to a molten state, then adding 5-8 parts by mass of dry shale ceramsite to the molten composite phase change material, and stirring for 5-10 minutes;

[0031] S4.3: Transfer to a vacuum drying oven, maintain an environment of 60-70°C and soak for 2-6 hours, then filter while maintaining the temperature unchanged, remove the filtrate, and allow to stand at room temperature of 20°C for 16-18 hours to obtain phase change aggregate.

[0032] Furthermore, the adhesive in step S3.1 is one of polyacrylate, epoxy resin and polyurethane.

[0033] Furthermore, the pore-forming agent in step S3.1 is sodium bicarbonate.

[0034] Furthermore, the oil shale residue in step S3.1 is solid waste generated after oil shale mining.

[0035] A high-performance concrete material is prepared by the above-mentioned method for preparing the high-performance concrete material.

[0036] An electric pole is prepared by pouring the above-mentioned high-performance concrete material on a steel mesh.

[0037] Compared with the prior art, the present invention has at least the following beneficial effects:

[0038] 1. The present invention introduces mesoporous activated carbon, a carbon-based material, into oleic acid. Oleic acid is a fatty acid. The porous structure of the mesoporous activated carbon is utilized to allow the oleic acid to adhere to the surface of the mesoporous activated carbon and fill in the micropores of the mesoporous activated carbon, thereby increasing the aggregation degree of the oleic acid and forming a composite material structure of oleic acid wrapped in the mesoporous activated carbon. Such a structure allows the oleic acid to be highly aggregated, which is beneficial for the subsequent reaction in which the oleic acid contacts with methyl methacrylate and methyl erucate and reacts to form a composite phase change material. Moreover, the composite material formed by oleic acid and the mesoporous activated carbon has better high and low temperature stability than single oleic acid. Introducing carbon-based materials into fatty acids can improve the high and low temperature stability of phase change materials with fatty acids as one of the raw materials, thereby improving the high and low temperature stability of concrete materials.

[0039] 2. The present invention prepares a composite phase change material by mixing methyl methacrylate, methyl erucate and oleic acid / activated carbon composite materials. The three use methyl methacrylate as a grid matrix to form a polymer network structure. The polymer network structure can provide additional mechanical properties, thereby improving the mechanical strength of the composite phase change material, so that when it is used as an admixture to prepare concrete, the physical strength, hardness and compressive strength are improved. In addition, methyl erucate and oleic acid will undergo phase changes within a certain temperature range, from solid to liquid, and then from liquid to solid. This phase change behavior allows the material to soften and fill cracks when heated, and re-solidify after cooling, thereby giving the concrete material a certain self-repairing ability, allowing it to self-repair when slightly damaged, extending its service life.

[0040] 3. The present invention melt-blends shale aggregate and composite phase change material to obtain phase change aggregate, and adds the phase change aggregate to concrete raw materials. The phase change material can undergo phase change within a specific temperature range and absorb or release heat, and shale ceramsite has a porous structure, which can reduce heat conduction and improve thermal stability. By adding shale ceramsite and phase change aggregate, the thermal stability of concrete materials is improved. In addition, the porous structure of shale ceramsite is also helpful to fix the phase change material, prevent its migration or loss, and maintain the shape stability and compressive strength of the concrete material. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0042] Figure 1 This is a flow chart of a method for preparing a high performance concrete material used in an embodiment of the present invention. DETAILED DESCRIPTION

[0043] The preparation method of the high performance concrete material provided by the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0044] Embodiment 1:

[0045] Preparation method of high performance concrete material, such as Figure 1 As shown, the following steps are included:

[0046] S1: Oleic acid composite mesoporous activated carbon

[0047] S1.1: Heat 40 parts by mass of anhydrous ethanol to 75°C, add 10 parts by mass of oleic acid, and stir at a speed of 200 r / min for 10 min. Then, add 4 parts by mass of mesoporous activated carbon while maintaining stirring, and stir for 3 h.

[0048] S1.2: Then, the mixture was placed in an oven at 80°C for 72 hours for drying, allowed to cool to 24°C, and ground through a 200-mesh sieve to obtain an oleic acid / activated carbon composite material.

[0049] S2: Preparation of composite phase change materials

[0050] S2.1: mixing 10 parts by mass of methyl methacrylate, 8 parts by mass of methyl erucate and 1.5 parts by mass of oleic acid / activated carbon composite material to obtain a mixed organic matter;

[0051] S2.2: Add 0.4 parts by mass of Span-80, 0.8 parts by mass of Tween-80 and 0.25 parts by mass of ammonium persulfate into 85 parts by mass of deionized water, stir well, and obtain a mixed solution;

[0052] S2.3: The obtained mixed organic matter is mixed with the mixed solution, and stirred at a speed of 8000 r / min for 5 minutes by a high-speed homogenizer to form an emulsion, and then the emulsion is transferred to a stirrer, heated to 85°C, and stirred at a speed of 300 r / min for 6 hours. The filtrate is then filtered to remove the filtrate, and the residue is washed twice with deionized water, and then dried in an oven at 45°C for 24 hours to obtain a composite phase change material.

[0053] S3: Preparation of shale ceramsite

[0054] S3.1: Add 2 parts by mass of boron mud, 15 parts by mass of oil shale slag, 10 parts by mass of fly ash, 1 part by mass of binder polyacrylate and 2 parts by mass of pore-forming agent sodium bicarbonate into a ball mill, where the oil shale slag is the solid waste generated after oil shale mining, and then add 50 parts by mass of pure water for ball milling. After ball milling for 40 minutes, transfer to a mud press, squeeze out the water and dry to obtain mud blocks;

[0055] S3.2: crushing the mud into powder and then forming it in a molding machine to form spherical particles with a diameter of 2 mm to obtain raw material balls;

[0056] S3.3: After the raw material balls are put into the kiln, the temperature is raised to 400℃ and preheated at a constant temperature for 20 minutes. Then the temperature is further raised to 1100℃ and kept at this temperature for 15 minutes. The heating is stopped, the kiln is sealed and naturally cooled to room temperature of 20℃ to obtain shale expanded clay.

[0057] S4: Preparation of phase change aggregate

[0058] S4.1: drying the shale ceramsite in an oven at 105°C to constant weight to obtain dry shale ceramsite;

[0059] S4.2: heating the composite phase change material to a molten state, then adding 5 parts by mass of dry shale ceramsite to the molten composite phase change material and stirring for 5 minutes;

[0060] S4.3: Transfer to a vacuum drying oven, maintain an environment of 60°C and soak for 2 hours, then filter while maintaining the temperature unchanged, remove the filtrate, and allow to stand at room temperature of 20°C for 16 hours to obtain phase change aggregate.

[0061] S5: Preparation of high performance concrete materials

[0062] 60 parts by mass of sand, 110 parts by mass of gravel, 42 parts by mass of cement and 80 parts by mass of phase change aggregate were premixed for 30 seconds, then 10 parts by mass of pure water were added and stirred for 60 seconds, and then 10 parts by mass of pure water were added and stirred for 120 seconds to obtain a high performance concrete material.

[0063] Embodiment 2:

[0064] Preparation method of high performance concrete material, such as Figure 1 As shown, the following steps are included:

[0065] S1: Oleic acid composite mesoporous activated carbon

[0066] S1.1: Heat 45 parts by weight of anhydrous ethanol to 75°C, add 18 parts by weight of oleic acid, and stir at 200 r / min for 10 min. Then, add 8 parts by weight of mesoporous activated carbon while stirring, and stir for 3 h.

[0067] S1.2: Then, the mixture was placed in an oven at 80°C for 72 hours for drying, allowed to cool to 24°C, and ground through a 200-mesh sieve to obtain an oleic acid / activated carbon composite material.

[0068] S2: Preparation of composite phase change materials

[0069] S2.1: mixing 12 parts by mass of methyl methacrylate, 9 parts by mass of methyl erucate and 2.5 parts by mass of oleic acid / activated carbon composite material to obtain a mixed organic matter;

[0070] S2.2: Add 0.8 parts by mass of Span-80, 1 part by mass of Tween-80 and 0.75 parts by mass of ammonium persulfate into 85 parts by mass of deionized water, stir evenly to obtain a mixed solution;

[0071] S2.3: The obtained mixed organic matter is mixed with the mixed solution, and stirred at a speed of 8000 r / min for 5 minutes by a high-speed homogenizer to form an emulsion, and then the emulsion is transferred to a stirrer, heated to 85°C, and stirred at a speed of 300 r / min for 6 hours. The filtrate is then filtered to remove the filtrate, and the residue is washed twice with deionized water, and then dried in an oven at 45°C for 24 hours to obtain a composite phase change material.

[0072] S3: Preparation of shale ceramsite

[0073] S3.1: Add 5 parts by mass of boron mud, 25 parts by mass of oil shale slag, 15 parts by mass of fly ash, 3 parts by mass of binder polyacrylate and 4 parts by mass of pore-forming agent sodium bicarbonate into a ball mill, where the oil shale slag is the solid waste generated after oil shale mining, and then add 60 parts by mass of pure water for ball milling. After ball milling for 40 minutes, transfer to a mud press, squeeze out the water and dry to obtain mud blocks;

[0074] S3.2: crushing the mud into powder and then forming it in a molding machine to form spherical particles with a diameter of 2 mm to obtain raw material balls;

[0075] S3.3: After the raw material balls are put into the kiln, the temperature is raised to 400℃ and preheated at a constant temperature for 20 minutes. Then the temperature is further raised to 1100℃ and kept at this temperature for 15 minutes. The heating is stopped, the kiln is sealed and naturally cooled to room temperature of 20℃ to obtain shale expanded clay.

[0076] S4: Preparation of phase change aggregate

[0077] S4.1: drying the shale ceramsite in an oven at 105°C to constant weight to obtain dry shale ceramsite;

[0078] S4.2: heating the composite phase change material to a molten state, then adding 8 parts by mass of dry shale ceramsite to the molten composite phase change material and stirring for 5 minutes;

[0079] S4.3: Transfer to a vacuum drying oven, maintain an environment of 60°C and soak for 2 hours, then filter while maintaining the temperature unchanged, remove the filtrate, and allow to stand at room temperature of 20°C for 16 hours to obtain phase change aggregate.

[0080] S5: Preparation of high performance concrete materials

[0081] 64 parts by mass of sand, 120 parts by mass of gravel, 44 parts by mass of cement and 90 parts by mass of phase change aggregate were premixed for 30 seconds, then 15 parts by mass of pure water were added and stirred for 60 seconds, and then 15 parts by mass of pure water were added and stirred for 120 seconds to obtain a high performance concrete material.

[0082] Embodiment 3:

[0083] Preparation method of high performance concrete material, such as Figure 1 As shown, the following steps are included:

[0084] S1: Oleic acid composite mesoporous activated carbon

[0085] S1.1: Heat 40 parts by mass of anhydrous ethanol to 80°C, add 10 parts by mass of oleic acid, and stir at a speed of 300 r / min for 15 min. Then, add 4 parts by mass of mesoporous activated carbon while maintaining stirring, and stir for 3.5 h.

[0086] S1.2: Then, the mixture was placed in an oven at 85°C and dried for 75 h, cooled to 26°C, and ground through a 200-mesh sieve to obtain an oleic acid / activated carbon composite material.

[0087] S2: Preparation of composite phase change materials

[0088] S2.1: mixing 10 parts by mass of methyl methacrylate, 8 parts by mass of methyl erucate and 1.5 parts by mass of oleic acid / activated carbon composite material to obtain a mixed organic matter;

[0089] S2.2: Add 0.4 parts by mass of Span-80, 0.8 parts by mass of Tween-80 and 0.25 parts by mass of ammonium persulfate into 85 parts by mass of deionized water, stir well, and obtain a mixed solution;

[0090] S2.3: The obtained mixed organic matter is mixed with the mixed solution, and stirred at a speed of 8200 r / min for 10 minutes by a high-speed homogenizer to form an emulsion, and then the emulsion is transferred to a stirrer, heated to 90°C, and stirred at a speed of 350 r / min for 7 hours. The filtrate is then filtered to remove the filtrate, and the residue is washed twice with deionized water, and then dried in an oven at 50°C for 25 hours to obtain a composite phase change material.

[0091] S3: Preparation of shale ceramsite

[0092] S3.1: Add 2 parts by mass of boron mud, 15 parts by mass of oil shale slag, 10 parts by mass of fly ash, 1 part by mass of binder polyacrylate and 2 parts by mass of pore-forming agent sodium bicarbonate into a ball mill, where the oil shale slag is the solid waste generated after oil shale mining, and then add 50 parts by mass of pure water for ball milling. After ball milling for 60 minutes, transfer to a mud press, squeeze out the water and dry to obtain mud blocks;

[0093] S3.2: crushing the mud into powder and then forming it in a molding machine to form spherical particles with a diameter of 2 mm to obtain raw material balls;

[0094] S3.3: After the raw material balls are put into the kiln, the temperature is raised to 500℃ and preheated at a constant temperature for 25 minutes. Then the temperature is further raised to 1250℃ and kept at this temperature for 20 minutes. The heating is stopped, the kiln is sealed and naturally cooled to room temperature of 20℃ to obtain shale expanded clay.

[0095] S4: Preparation of phase change aggregate

[0096] S4.1: drying the shale ceramsite in an oven at 110°C to constant weight to obtain dry shale ceramsite;

[0097] S4.2: heating the composite phase change material to a molten state, then adding 5 parts by mass of dry shale ceramsite to the molten composite phase change material and stirring for 5 minutes;

[0098] S4.3: Transfer to a vacuum drying oven, maintain an environment of 70°C and soak for 6 hours, then filter while maintaining the temperature unchanged, remove the filtrate, and allow to stand at room temperature of 20°C for 18 hours to obtain phase change aggregate.

[0099] S5: Preparation of high performance concrete materials

[0100] 60 parts by mass of sand, 110 parts by mass of gravel, 42 parts by mass of cement and 80 parts by mass of phase change aggregate were premixed for 60 seconds, then 10 parts by mass of pure water were added and stirred for 70 seconds, and then 10 parts by mass of pure water were added and stirred for 140 seconds to obtain a high performance concrete material.

[0101] Comparative Example 1:

[0102] Compared with Example 1, Comparative Example 1 is a commercially available concrete material.

[0103] Comparative Example 2:

[0104] Compared with Example 1, the difference of Comparative Example 2 is that step S1 is not performed, and oleic acid is used instead of oleic acid / activated carbon composite material in step S2.1, specifically: "S2.1: mix 10 parts by mass of methyl methacrylate, 8 parts by mass of methyl erucate and 1.5 parts by mass of oleic acid / activated carbon composite material to obtain a mixed organic matter", and the other steps remain unchanged, and the prepared high-performance concrete material is recorded as Comparative Example 2.

[0105] Comparative Example 3:

[0106] Compared with Example 1, the difference of Comparative Example 3 is that no oleic acid / activated carbon composite material is added in step S2.1, specifically: "S2.1: mix 10 parts by mass of methyl methacrylate and 8 parts by mass of methyl erucate to obtain a mixed organic matter", and the other steps remain unchanged, and the prepared high-performance concrete material is recorded as Comparative Example 3.

[0107] Comparative Example 4:

[0108] Compared with Example 1, the difference of Comparative Example 4 is that methyl erucate is not added in step S2.1, specifically: "S2.1: mix 10 parts by mass of methyl methacrylate and 8 parts by mass of methyl erucate to obtain a mixed organic matter", and the remaining steps remain unchanged, and the prepared high-performance concrete material is recorded as Comparative Example 4.

[0109] Comparative Example 5:

[0110] Compared with Example 1, the difference of Comparative Example 5 is that step S4 is not performed, and the composite phase change material is used instead of the phase change aggregate in step S5, specifically: "S5: Preparation of high performance concrete material

[0111] 60 parts by mass of sand, 110 parts by mass of gravel, 42 parts by mass of cement and 80 parts by mass of composite phase change material were premixed for 30 seconds, then 10 parts by mass of pure water were added and stirred for 60 seconds, and then 10 parts by mass of pure water were added and stirred for 120 seconds to obtain a high performance concrete material. The other steps remained unchanged, and the high performance concrete material prepared was recorded as Comparative Example 5.

[0112] The compressive strength of the embodiments and comparative examples was tested according to the method in GB / T 17671-2021 “Test method for strength of cement mortar (ISO method)”, as shown in Table 1.

[0113] According to GB / T 50082-2009 "Standard for Test Methods for Long-term Performance and Durability of Ordinary Concrete", the embodiment and the comparative example were subjected to a rapid freeze-thaw cycle test using a programmed ultra-low temperature testing machine. After 200 freeze-thaw cycle tests, the strength values ​​of the samples were measured as a percentage of the original strength values, as shown in Table 2.

[0114] The yield and purity of the finished glycidyl methacrylate of Examples 1-3 were tested and calculated, and compared with Comparative Examples 1-5, they were tabulated as follows.

[0115] Table 1:

[0116] Compressive strength(Mpa) Strength ratio (%) Example 1 55.8 37 Example 2 56.1 35 Example 3 55.4 39 Comparative Example 1 51.3 28 Comparative Example 2 52.6 21 Comparative Example 3 51.7 24 Comparative Example 4 51.4 31 Comparative Example 5 50.1 30

[0117] It can be seen from the table that the compressive strength of Examples 1-3 is above 55.4 MPa, while the compressive strength of the commercially available product of Comparative Example 1 is 51.3 MPa. It can be seen that the concrete material of the present invention has better compressive strength than the commercially available product, and after 200 freeze-thaw cycle tests, the strength ratio of the concrete material of the present invention is higher than that of the comparative example, indicating that the strength of the concrete material of the present invention decreases less, and the strength of the commercially available product of Comparative Example 1 decreases more, which shows that the high and low temperature stability of the embodiments is better.

[0118] The compressive strength of Example 2 is 52.6 MPa, and the strength after the freeze-thaw cycle test accounts for 21%. It can be seen that the high and low temperature stability of Example 2, which does not introduce the combination of mesoporous activated carbon and oleic acid, is greatly reduced, and the compressive strength is also reduced to a certain extent.

[0119] The compressive strengths of comparative examples 3-5 are 51.7 MPa, 51.4 MPa and 50.1 MPa respectively. It can be seen that after the composite phase change material prepared by methyl methacrylate, methyl erucate and activated carbon is mixed with shale aggregate, the synergistic effect between them improves the compressive strength of the concrete material and also has a certain impact on the high and low temperature stability.

[0120] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A method for preparing a high performance concrete material, characterized in that: The steps include: S1: Oleic acid composite mesoporous activated carbon The anhydrous ethanol is heated, and oleic acid is added, and the mixture is stirred. Then, mesoporous activated carbon is added while the mixture is stirred, and the mixture is dried, ground, and sieved to obtain an oleic acid / activated carbon composite material. S2: Preparation of composite phase change materials Methyl methacrylate, methyl erucate and oleic acid / activated carbon composite material are mixed to obtain a mixed organic matter, Span-80, Tween-80 and ammonium persulfate are added into deionized water, stirred evenly to obtain a mixed solution, the obtained mixed organic matter is mixed with the mixed solution, stirred to form an emulsion, and then the emulsion is transferred to a stirrer, heated and stirred, and then the filtrate is removed by filtering, washed, and dried to obtain a composite phase change material; S3: Preparation of shale ceramsite Boron mud, oil shale slag, fly ash, binder and pore-forming agent are added to a ball mill, and then pure water is added for ball milling and drying to obtain mud blocks, which are then formed in a molding machine to form spherical particles to obtain raw material balls. After the raw material balls are put into a kiln, they are preheated by heating, and then continue to heat up, keep warm for reaction, and finally seal the kiln for natural cooling to obtain shale ceramsite. S4: Preparation of phase change aggregate The shale ceramsite is dried to a constant weight to obtain dry shale ceramsite, the composite phase change material is heated to a molten state, and then the dry shale ceramsite is added to the molten composite phase change material, stirred, transferred to a vacuum drying oven, soaked, then filtered, and allowed to stand to obtain a phase change aggregate; S5: Preparation of high performance concrete materials 60-64 parts by mass of sand, 110-120 parts by mass of gravel, 42-44 parts by mass of cement and 80-90 parts by mass of phase change aggregate are premixed for 30-60 seconds, then 10-15 parts by mass of pure water are added and stirred for 60-70 seconds, and then 10-15 parts by mass of pure water are added and stirred for 12-14 seconds to obtain a high performance concrete material.

2. The method for preparing high performance concrete material according to claim 1, characterized in that: Step S1 oleic acid composite mesoporous activated carbon comprises the following steps: S1.1: Heat 40-45 parts by weight of anhydrous ethanol to 75-80°C, add 10-18 parts by weight of oleic acid, and stir at a speed of 200-300 r / min for 10-15 min, then add 4-8 parts by weight of mesoporous activated carbon while maintaining stirring, and stir for 3-3.5 h; S1.2: Then place in an oven at 80-85°C to dry for 72-75h, cool to 24-26°C, and grind through a 200-mesh sieve to obtain an oleic acid / activated carbon composite material.

3. The method for preparing high performance concrete material according to claim 2, characterized in that: step S2 prepares the composite phase change material, comprising the following steps: S2.1: mixing 10-12 parts by mass of methyl methacrylate, 8-9 parts by mass of methyl erucate and 1.5-2.5 parts by mass of oleic acid / activated carbon composite material to obtain a mixed organic matter; S2.2: Add 0.4-0.8 parts by mass of Span-80, 0.8-1 parts by mass of Tween-80 and 0.25-0.75 parts by mass of ammonium persulfate to 85-95 parts by mass of deionized water, stir well, and obtain a mixed solution; S2.3: The obtained mixed organic matter is mixed with the mixed solution, and stirred at a speed of 8000-8200 r / min for 5-10 minutes by a high-speed homogenizer to form an emulsion, and then the emulsion is transferred to a stirrer, heated to 85-90°C, and stirred at a speed of 300-350 r / min for 6-7 hours, and then the filtrate is removed by filtering, and the filter residue is washed twice with deionized water, and then dried in an oven at 45-50°C for 24-25 hours to obtain a composite phase change material.

4. The method for preparing high performance concrete material according to claim 3, characterized in that: step S3 prepares shale ceramsite, comprising the following steps: S3.1: Add 2-5 parts by mass of boron mud, 15-25 parts by mass of oil shale slag, 10-15 parts by mass of fly ash, 1-3 parts by mass of binder and 2-4 parts by mass of pore former into a ball mill, then add 50-60 parts by mass of pure water for ball milling, transfer to a mud press after ball milling for 40-60 minutes, squeeze out the water and dry to obtain mud blocks; S3.2: crushing the mud into powder and then forming it in a molding machine to form spherical particles with a diameter of 2-8 mm to obtain raw material balls; S3.3: After the raw material balls are put into the kiln, the temperature is raised to 400-500℃, and preheated at a constant temperature for 20-25min. Then the temperature is continued to be raised to 1100-1250℃, and kept warm for 15-20min. The heating is stopped, the kiln is sealed, and naturally cooled to room temperature of 20℃ to obtain shale expanded clay.

5. The method for preparing high performance concrete material according to claim 4, characterized in that: step S4 prepares phase change aggregate, comprising the following steps: S4.1: drying the shale ceramsite in an oven at 105-110°C to constant weight to obtain dry shale ceramsite; S4.2: heating the composite phase change material to a molten state, then adding 5-8 parts by mass of dry shale ceramsite to the molten composite phase change material, and stirring for 5-10 minutes; S4.3: Transfer to a vacuum drying oven, maintain an environment of 60-70°C and soak for 2-6 hours, then filter while maintaining the temperature unchanged, remove the filtrate, and allow to stand at room temperature of 20°C for 16-18 hours to obtain phase change aggregate.

6. The method for preparing high performance concrete material according to claim 5, characterized in that: The adhesive in step S3.1 is one of polyacrylate, epoxy resin and polyurethane.

7. The method for preparing a high performance concrete material according to claim 6, characterized in that: The pore-forming agent in step S3.1 is sodium bicarbonate.

8. The method for preparing high performance concrete material according to claim 7, characterized in that: The oil shale residue in step S3.1 is solid waste generated after oil shale mining.

9. A high performance concrete material, characterized in that: The high-performance concrete material is prepared by the method for preparing the high-performance concrete material according to any one of claims 1 to 8.

10. An electric pole, characterized in that: The high-performance concrete is prepared by pouring the high-performance concrete material of claim 9 on a steel mesh.

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