High-performance concrete material and pole manufacturing method

Abstract

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

Description

Technical Field

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

[0002] Concrete is an artificial stone material made from a mixture of cement, water, fine aggregate, coarse aggregate, and possible additives. High-performance concrete typically achieves higher strength, better workability, and durability through optimized mix proportions and the addition of high-efficiency admixtures. Concrete with high strength and durability can be used to make electric poles.

[0003] Electric poles are vertical structures used to support wires, cables and other electrical 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 the poles, prestressed steel bars are also set in them. By applying prestress, the crack resistance and load-bearing capacity of the 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 pole is different, the prestressed steel bars need to be adjusted according to the situation, which is very manpower-consuming. Therefore, the present invention provides a high-performance concrete material and a method for preparing a pole, which can improve the compressive strength of the pole by improving the compressive strength of the concrete material. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is 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, oleic acid is added, and the mixture is stirred. Subsequently, mesoporous activated carbon is added while the mixture is stirred, 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 an oleic acid / activated carbon composite material are mixed to obtain a mixed organic matter; Span-80, Tween-80, and ammonium persulfate are added to deionized water and stirred uniformly to obtain a mixed solution; the obtained mixed organic matter is mixed with the mixed solution and stirred until an emulsion is formed; the emulsion is transferred to a blender, heated and stirred, and the filtrate is subsequently filtered to remove, 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. The mud blocks are formed in a molding machine to form spherical particles to obtain raw material balls. After the raw material balls are put into a kiln, the temperature is increased for preheating, and then the temperature is continued to increase, and the reaction is carried out at the temperature. Finally, the kiln is sealed and cooled naturally 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 of preparing 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 200-300 rpm for 10-15 minutes. Then, add 4-8 parts by weight of mesoporous activated carbon while continuing to stir, and stir for 3-3.5 hours.

[0019] S1.2: The mixture was then dried in an oven at 80-85°C for 72-75 hours, allowed to cool to 24-26°C, and ground 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 an 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, and stir to 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 continuously stirred at a speed of 300-350 r / min for 6-7 hours. The filtrate is then filtered to remove the filtrate, 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 weight of boron mud, 15-25 parts by weight of oil shale slag, 10-15 parts by weight of fly ash, 1-3 parts by weight of binder, and 2-4 parts by weight of pore-forming agent to a ball mill. Then, add 50-60 parts by weight of purified water and ball mill. After ball milling for 40-60 minutes, transfer to a mud press, 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 20-25 minutes. Then the temperature is further raised to 1100-1250℃ and kept at this temperature for 15-20 minutes. The heating is stopped, the kiln is sealed, and the balls are naturally cooled to room temperature of 20℃ to obtain shale ceramsite.

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

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

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

[0031] S4.3: Transfer to a vacuum drying oven and soak in an environment maintained at 60-70°C 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 preparation method of 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 a carbon-based material, mesoporous activated carbon, 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 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 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 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 an oleic acid / activated carbon composite material. 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 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 resolidify after cooling, thereby giving the concrete material a certain self-repair 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, while 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 the concrete material is improved. In addition, the porous structure of shale ceramsite also helps 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 one skilled in the relevant art to make and use the present disclosure.

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

[0043] The following describes in detail the method for preparing the high-performance concrete material provided by the present invention, with reference to the accompanying drawings and specific examples. It should also be noted that, for the sake of completeness, the following examples are best and preferred embodiments, and those skilled in the art may employ alternative methods for implementing known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0044] Example 1:

[0045] Preparation methods of high performance concrete materials, 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 200 r / min for 10 minutes. Then, add 4 parts by mass of mesoporous activated carbon while continuing to stir, and stir for 3 hours.

[0048] S1.2: The mixture was then dried in an oven at 80°C for 72 h, 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 an oleic acid / activated carbon composite material to obtain a mixed organic matter;

[0051] S2.2: 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 were added into 85 parts by mass of deionized water, and stirred uniformly to obtain a mixed solution;

[0052] S2.3: The obtained mixed organic matter was mixed with the mixed solution, and stirred by a high-speed homogenizer at a speed of 8000 r / min for 5 min to form an emulsion, then the emulsion was transferred to a stirrer, heated to 85°C, and continuously stirred at a speed of 300 r / min for 6 h, then the filtrate was removed by filtration, the residue was washed with deionized water for 2 times, then dried in an oven at 45°C for 24 h to obtain a composite phase change material.

[0053] S3: Preparation of shale ceramsite

[0054] S3.1: 2 parts by mass of boron mud, 15 parts by mass of oil shale residue, 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 were added into a ball mill together, and then 50 parts by mass of pure water was added for ball milling, and after ball milling for 40 min, it was transferred to a mud squeezing machine, and after squeezing dry, it was dried to obtain a mud block;

[0055] S3.2: The mud block was crushed into powder and then molded in a molding machine to form spherical particles with a diameter of 2 mm to obtain green balls;

[0056] S3.3: After the green balls were put into a kiln, the temperature was raised to 400°C, and the temperature was kept constant for 20 min, then the temperature was continuously raised to 1100°C, and the temperature was kept constant for 15 min, the heating was stopped, and the kiln was naturally cooled to room temperature 20°C to obtain shale ceramsite.

[0057] S4: Preparation of phase change aggregate

[0058] S4.1: The shale ceramsite was dried in an oven at 105°C to constant weight to obtain dried shale ceramsite;

[0059] S4.2: The composite phase change material was heated to a molten state, and then 5 parts by mass of dried shale ceramsite was added into the molten composite phase change material and stirred for 5 min;

[0060] S4.3: It was transferred to a vacuum drying box and soaked at 60°C for 2 h, then filtered at the same temperature, and the filtrate was removed, and the mixture was left to stand at room temperature 20°C for 16 h to obtain a phase change aggregate.

[0061] S5: Preparation of high-performance concrete material

[0062] Pre-mix 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 for 30 seconds, then add 10 parts by mass of pure water and stir for 60 seconds, and then add 10 parts by mass of pure water and stir for 120 seconds to obtain a high-performance concrete material.

[0063] Example 2:

[0064] A method for preparing a high-performance concrete material, as shown in Figure 1 includes the following steps:

[0065] S1: Oleic acid composite mesoporous activated carbon

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

[0067] S1.2: Then dry in an 80°C oven for 72 h, let cool to 24°C, and grind through a 200-mesh sieve to obtain an oleic acid / activated carbon composite material.

[0068] S2: Preparation of composite phase change material

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

[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 to 85 parts by mass of deionized water, and stir until uniform to obtain a mixed solution;

[0071] S2.3: Mix the obtained mixed organic substance with the mixed solution, and stir at a speed of 8000 r / min for 5 min using a high-speed homogenizer to form an emulsion, then transfer the emulsion to a stirrer, heat to 85°C, and continue stirring at a speed of 300 r / min for 6 h, then filter to remove the filtrate, wash the residue with deionized water twice, then dry in a 45°C oven for 24 h 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 residue, 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, the oil shale residue being a solid waste produced after oil shale mining, to a ball mill, and then add 60 parts by mass of pure water to perform ball milling, after ball milling for 40 min, transfer to a mud squeezing machine, squeeze out the water, and then dry to obtain a mud block;

[0074] S3.2: The mud block is crushed into powder and then molded in a molding machine to form spherical particles with a diameter of 2 mm, thereby obtaining green balls;

[0075] S3.3: The green balls are put into a kiln, heated to 400°C, and kept at this temperature for 20 min, then heated to 1100°C and kept at this temperature for 15 min, then heating is stopped and the kiln is naturally cooled to room temperature 20°C, thereby obtaining shale ceramsite.

[0076] S4: Preparation of phase change aggregate

[0077] S4.1: The shale ceramsite is dried in an oven at 105°C to constant weight, thereby obtaining dried shale ceramsite;

[0078] S4.2: The composite phase change material is heated to a molten state, then 8 parts by mass of dried shale ceramsite is added to the molten composite phase change material, and stirred for 5 min;

[0079] S4.3: Transfer to a vacuum drying box, soak in an environment of 60°C for 2 h, then filter without changing the temperature, remove the filtrate, and stand at room temperature 20°C for 16 h, thereby obtaining the phase change aggregate.

[0080] S5: Preparation of high-performance concrete material

[0081] Pre-mix 64 parts by mass of sand, 120 parts by mass of stone, 44 parts by mass of cement, and 90 parts by mass of phase change aggregate for 30 s, then add 15 parts by mass of pure water and stir for 60 s, then add 15 parts by mass of pure water and stir for 120 s, thereby obtaining the high-performance concrete material.

[0082] Example 3:

[0083] The preparation method of the high-performance concrete material, as shown in Figure 1 , comprises the following steps:

[0084] S1: Oleic acid composite mesoporous activated carbon

[0085] S1.1: 40 parts by mass of anhydrous ethanol is heated to 80°C, then 10 parts by mass of oleic acid is added and stirred at a speed of 300 r / min for 15 min, then 4 parts by mass of mesoporous activated carbon is added while stirring is maintained, and stirred for 3.5 h;

[0086] S1.2: Then placed in an oven at 85°C 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 material

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

[0089] S2.2: 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 were added to 85 parts by mass of deionized water, and stirred uniformly to obtain a mixed solution;

[0090] S2.3: The obtained mixed organic substance was mixed with the mixed solution, and stirred by a high-speed homogenizer at a speed of 8200 r / min for 10 min until an emulsion was formed, and then the emulsion was transferred to a stirrer, heated to 90°C, and continuously stirred at a speed of 350 r / min for 7 h, and then the filtrate was removed by filtration, the residue was washed with deionized water for 2 times, and then dried in a 50°C oven for 25 h to obtain a composite phase change material.

[0091] S3: Preparation of shale ceramsite

[0092] S3.1: 2 parts by mass of boron mud, 15 parts by mass of oil shale residue, 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 were added into a ball mill, and 50 parts by mass of pure water was added for ball milling, and after ball milling for 60 min, the mixture was transferred to a mud squeezing machine, and after squeezing dry, the mud was dried to obtain a mud block;

[0093] S3.2: The mud block was crushed into powder and then molded in a molding machine to form spherical particles with a diameter of 2 mm to obtain green balls;

[0094] S3.3: The green balls were put into a kiln, heated to 500°C, and preheated for 25 min, then continuously heated to 1250°C and kept for 20 min, stopped heating, and naturally cooled to room temperature 20°C in a closed kiln to obtain shale ceramsite.

[0095] S4: Preparation of phase change aggregate

[0096] S4.1: The shale ceramsite was dried in an oven at 110°C to constant weight to obtain dried shale ceramsite;

[0097] S4.2: The composite phase change material was heated to a molten state, and then 5 parts by mass of dried shale ceramsite was added to the molten composite phase change material and stirred for 5 min;

[0098] S4.3: The mixture was transferred to a vacuum drying box and soaked at 70°C for 6 h, then filtered at the same temperature, and the filtrate was removed, and the mixture was left to stand at room temperature 20°C for 18 h to obtain a phase change aggregate.

[0099] S5: Preparation of high-performance concrete material

[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, and then 10 parts by mass of pure water was added and stirred for 70 seconds, and then 10 parts by mass of pure water was 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, Comparative Example 2 is different in that step S1 is not performed, oleic acid is used instead of the oleic acid / activated carbon composite material in step S2.1, and the other steps remain unchanged. The high-performance concrete material prepared 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 remaining steps remain unchanged. The high-performance concrete material prepared is recorded as Comparative Example 3.

[0107] Comparative Example 4:

[0108] Compared with Example 1, Comparative Example 4 is different in that methyl erucate is not added in step S2.1, and the other steps remain unchanged. The high-performance concrete material prepared 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, followed by the addition of 10 parts by mass of purified water and stirring for 60 seconds, and then the addition of 10 parts by mass of purified water and stirring for 120 seconds to obtain a high-performance concrete material. The remaining steps remained unchanged, and the high-performance concrete material prepared was recorded as Comparative Example 5.

[0112] The compressive strength of the examples 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 embodiments and comparative examples were subjected to rapid freeze-thaw cycle tests using a programmed ultra-low temperature testing machine. After 200 freeze-thaw cycle tests, the strength values ​​were calculated 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 the results were tabulated below together with those of Comparative Examples 1-5.

[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] As can be seen from the table, 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. Moreover, 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, while the strength of the commercially available product of Comparative Example 1 decreases more significantly. It can be seen that the high and low temperature stability of the embodiments is better.

[0118] The compressive strength of Comparative 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 Comparative 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 skilled in 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 one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to 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, stirred, and then mesoporous activated carbon is added while stirring, stirred, 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 an oleic acid / activated carbon composite material are mixed to obtain a mixed organic matter; Span-80, Tween-80, and ammonium persulfate are added to deionized water and stirred uniformly to obtain a mixed solution; the obtained mixed organic matter is mixed with the mixed solution and stirred until an emulsion is formed; the emulsion is transferred to a blender, heated and stirred, and the filtrate is subsequently filtered to remove, 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. The mud blocks are formed in a molding machine to form spherical particles to obtain raw material balls. After the raw material balls are put into a kiln, the temperature is increased for preheating, and then the temperature is continued to increase, and the reaction is carried out at the temperature. Finally, the kiln is sealed and cooled naturally 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 200-300 rpm for 10-15 minutes. Then, add 4-8 parts by weight of mesoporous activated carbon while continuing to stir, and stir for 3-3.5 hours. S1.2: The mixture was then dried in an oven at 80-85°C for 72-75 hours, allowed to cool to 24-26°C, and ground 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 an 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, and stir to 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 continuously stirred at a speed of 300-350 r / min for 6-7 hours. The filtrate is then filtered to remove the filtrate, 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 weight of boron mud, 15-25 parts by weight of oil shale slag, 10-15 parts by weight of fly ash, 1-3 parts by weight of binder, and 2-4 parts by weight of pore-forming agent to a ball mill. Then, add 50-60 parts by weight of purified water and ball mill. After ball milling for 40-60 minutes, transfer to a mud press, 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 20-25 minutes. Then the temperature is further raised to 1100-1250℃ and kept at this temperature for 15-20 minutes. The heating is stopped, the kiln is sealed, and the balls are naturally cooled to room temperature of 20℃ to obtain shale ceramsite.

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: Dry the shale ceramsite in an oven at 105-110°C to constant weight to obtain dry shale ceramsite; S4.2: Heat the composite phase change material to a molten state, then add 5-8 parts by mass of dry shale ceramsite to the molten composite phase change material and stir for 5-10 minutes; S4.3: Transfer to a vacuum drying oven and soak in an environment maintained at 60-70°C 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 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 preparation method of 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 according to claim 9 onto a steel mesh.

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