Solid waste concrete admixture and preparation method thereof

Abstract

The invention discloses a solid waste concrete admixture and a preparation method thereof, and belongs to the technical field of concrete admixtures. The solid waste concrete admixture is prepared from the following raw materials in parts by mass: 10 to 12 parts of humic acid modified water reducing agent, 5 to 10 parts of complex liposome, 5 to 10 parts of layered dihydroxide coated triazabicyclo-decene and 1 to 3 parts of air entraining agent. The invention also discloses a preparation method of the solid waste concrete admixture. The solid waste concrete admixture can effectively reduce the leaching amount of heavy metal and dioxin in solid waste concrete, meanwhile, the working performance and durability of the solid waste concrete are guaranteed, the environmental protection value of treating waste with waste is achieved, and the solid waste concrete admixture has good application prospects.

Description

Technical Field

[0001] This invention belongs to the field of concrete admixture technology, specifically relating to a solid waste concrete admixture and its preparation method. Background Technology

[0002] With the acceleration of urbanization and the advancement of zero-waste city construction, the resource utilization of solid waste has become a core issue in the environmental protection field. Among them, fly ash from waste incineration is classified as hazardous waste due to its huge annual output and rich content of heavy metals, dioxins, and other harmful substances. Its safe disposal is one of the key challenges in the resource utilization of solid waste. Using such solid waste, which is rich in silicon and aluminum oxides, as an admixture in the preparation of concrete is an important way to achieve its large-scale disposal. However, relying solely on the physical encapsulation of cement hydration products is insufficient to completely prevent the leaching of heavy metal ions under long-term environmental conditions, posing a risk of secondary pollution. Solid waste admixtures often have characteristics such as high specific surface area, high alkalinity, and irregular morphology. Direct addition can lead to a significant increase in the water demand of concrete and a decrease in workability, as well as weakening the interfacial transition zone between cement paste and aggregate, ultimately affecting the strength and durability of concrete.

[0003] Therefore, effectively reducing the leaching of heavy metals and harmful substances from solid waste admixtures and improving concrete performance are the main challenges in the resource utilization of solid waste. Summary of the Invention

[0004] The problem to be solved by this invention is to provide a solid waste concrete admixture and its preparation method, so as to solve the problems of heavy metal and harmful substances leaching out in large quantities and low strength and durability of solid waste concrete when solid waste is used as an admixture in concrete.

[0005] The technical solution adopted to solve its technical problems is a solid waste concrete admixture, comprising the following raw materials in parts by weight: 10-12 parts of humic acid modified water-reducing agent, 5-10 parts of complexed liposomes, 5-10 parts of layered dihydroxyl-coated triazabicyclodecene, and 1-3 parts of air-entraining agent.

[0006] Preferably, the solid waste concrete admixture comprises the following raw materials in parts by weight: 10 parts of humic acid modified water-reducing agent, 5 parts of complexed liposomes, 7 parts of layered dihydroxylene-coated triazabicyclodecene, and 2 parts of air-entraining agent.

[0007] More preferably, the humic acid modified water-reducing agent is prepared by the following steps: humic acid, 2-acrylamido-2-methylpropanesulfonic acid, polyethylene glycol monomethyl ether acrylate, acrylic compounds and vinyl polyethylene glycol ether are mixed and polymerized under the action of an initiator and a chain transfer agent to obtain the humic acid modified water-reducing agent.

[0008] More preferably, the mass ratio of humic acid, 2-acrylamido-2-methylpropanesulfonic acid, polyethylene glycol monomethyl ether acrylate, acrylic acid compound, vinyl polyethylene glycol ether, initiator and chain transfer agent is (1~5):(0.5~3):(1~4):(3~8):(40~60):(0.1~0.5):(0.1~0.3); the polymerization temperature is 20~30℃ and the time is 1~3h.

[0009] More preferably, the mass ratio of humic acid, 2-acrylamido-2-methylpropanesulfonic acid, polyethylene glycol monomethyl ether acrylate, acrylic acid compound, vinyl polyethylene glycol ether, initiator and chain transfer agent is 1:1:1:4:48:0.3:0.15; the polymerization reaction temperature is 20°C and the time is 1.8h.

[0010] More preferably, the humic acid-modified water-reducing agent is prepared through the following steps: (1) Dissolve vinyl polyethylene glycol ether and humic acid in water to obtain the reaction substrate; (2) Dissolve acrylic compounds, polyethylene glycol monomethyl ether acrylate and 2-acrylamido-2-methylpropanesulfonic acid in water to obtain mixture A; (3) Dissolve the thio compound and the mercapto compound in water to obtain mixture B; (4) Add tert-butyl hydrogen peroxide to the reaction substrate, and then simultaneously add mixture A and mixture B. Dilute with water to a solid content of 50% to obtain humic acid modified water-reducing agent.

[0011] More preferably, step (4) includes the following steps: at 20°C and under stirring, tert-butyl hydrogen peroxide is added to the reaction substrate, and then mixed solution A and mixed solution B are added dropwise simultaneously. Mixed solution A is added dropwise for 50 minutes, and mixed solution B is added dropwise for 80 minutes. After the addition is completed, the temperature is maintained for 30 minutes, and water is added to dilute to a solid content of 50%, thus obtaining the humic acid modified water-reducing agent.

[0012] More preferably, the initiator includes tert-butyl hydrogen peroxide and a thio compound, wherein the mass ratio of tert-butyl hydrogen peroxide to the thio compound is (1~2):(0.5~3); the chain transfer agent is a mercapto compound; and the acrylic compound is at least one selected from acrylic acid, maleic acid, maleic anhydride, itaconic acid, crotonic acid, and citraconic acid.

[0013] More preferably, the mass ratio of tert-butyl hydrogen peroxide to the thio compound is 1:2.

[0014] More preferably, the thiolated compound is at least one of sodium thiosulfate, potassium thiosulfate, ammonium thiosulfate, dithiothreitol, and 1-thioglycerol; and the thiol compound is at least one of mercaptopropionate, trimethylolpropane tris(3-mercaptopropionate), and pentaerythritol tetra(3-mercaptopropionate).

[0015] More preferably, the complexed liposomes are prepared by the following steps: (1) Porphyrin compounds, N,N,N',N'-tetra(2-pyridinemethyl)ethylenediamine, soybean lecithin, cholesterol, sodium 1,2-dimyristic-sn-glycerol-3-phosphate and polyethylene glycol were dispersed in an organic solvent to obtain a pretreatment solution; (2) The pretreatment solution was injected into PBS buffer and stirred. The organic solvent was removed by rotary evaporation to obtain complexed liposomes.

[0016] More preferably, in step (1), the mass ratio of porphyrin compound, N,N,N',N'-tetra(2-pyridylmethyl)ethylenediamine, soybean lecithin, cholesterol, sodium 1,2-dimyristic-sn-glycerol-3-phosphate and polyethylene glycol is (5~8):(4~6):(30~40):(10~15):(2~4):(5~10); the organic solvent is ethanol; in step (2), the injection time is 30~60s, the stirring temperature is 50~70℃, and the stirring time is 10~30min; the porphyrin compound is at least one of in-situ porphyrin, tetraphenylporphyrin, tetra(4-sulfonic acid phenyl)porphyrin and tetra(4-N-methylpyridyl)porphyrin.

[0017] More preferably, in step (1), the mass ratio of porphyrin compound, N,N,N',N'-tetra(2-pyridinemethyl)ethylenediamine, soybean lecithin, cholesterol, sodium 1,2-dimyristic-sn-glycerol-3-phosphate and polyethylene glycol is 5:5:30:10:2:6; in step (2), the injection time is 30s, the stirring temperature is 60℃, and the stirring time is 20min.

[0018] More preferably, the polyethylene glycol is polyethylene glycol 400.

[0019] Preferably, the air-entraining agent is at least one of fatty amine polyoxyethylene ether, fatty alcohol polyoxyethylene ether sodium sulfate, sodium dodecyl sulfate, disproportionated rosin acid sodium, triterpenoid saponins, and sodium α-olefin sulfonate.

[0020] More preferably, the air-entraining agent is sodium dismutate rosinate.

[0021] The present invention also provides a method for preparing the above-mentioned solid waste concrete admixture, comprising the following steps: Humic acid-modified water-reducing agent, air-entraining agent and complexed liposomes are added to water in sequence and stirred evenly. Then, layered dihydroxylene is added to coat triazabicyclodecene to obtain solid waste concrete admixture.

[0022] The present invention has the following beneficial effects: (1) Since solid waste such as fly ash requires a large amount of water, the branched structure and alkaline hydrolysis groups in the humic acid modified water-reducing agent can effectively form a continuous repulsion and steric hindrance effect, enhancing the long-term dispersion ability of fly ash particles and cement particles; the mercapto compounds and thio compounds in the water-reducing agent can chelate with heavy metal ions such as Pb, Cd and Cr in solid waste, reducing the spillover of heavy metals.

[0023] (2) Complexed liposomes will continuously hydrolyze in an alkaline environment, and the released porphyrin compounds and N,N,N',N'-tetra(2-pyridinemethyl)ethylenediamine can improve the stability and solidification effect of heavy metal ions; the carboxyl and hydroxyl groups formed after the hydrolysis of liposomes will be adsorbed on the surface of cement and solid waste particles, which can enhance the dispersion ability of admixtures on solid waste concrete; the released phosphoric acid substances can adjust the charge distribution on the surface of cement particles and the concrete dispersion effect, while increasing the chelation of heavy metal ions.

[0024] (3) During use, the layered double hydroxyl coating triazabicyclodecene is continuously released in the cement slurry system of solid waste concrete. At the same time, porphyrin compounds come into contact with Fe in the concrete to form iron porphyrin compounds, which promotes the dechlorination, detoxification and gradual quenching of dioxins by triazabicyclodecene. The polyethylene glycol and phosphate released by the complexed liposomes further increase the solubility and contact effect of nucleophiles such as triazabicyclodecene and dioxins. The double hydroxyl interlayer structure effectively adsorbs dioxins and seals them inside the concrete, reducing the toxicity to the environment. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are only a part of the embodiments of this invention, and not all of them.

[0026] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0028] Example 1 A solid waste concrete admixture comprises the following raw materials in parts by weight: 10 parts of humic acid modified water-reducing agent, 5 parts of complexed liposomes, 7 parts of layered dihydroxyl-coated triazabicyclodecene, and 2 parts of disproportionated rosinate. The humic acid-modified water-reducing agent is prepared through the following steps: (1) Add 480 parts of vinyl polyethylene glycol ether with a molecular weight of 2400, 10 parts of humic acid and 420 parts of deionized water to the reaction vessel and stir until fully dissolved to obtain the reaction substrate. (2) Mix 40 parts of acrylic acid, 10 parts of polyethylene glycol monomethyl ether acrylate, 10 parts of 2-acrylamido-2-methylpropanesulfonic acid and 40 parts of deionized water evenly to obtain mixture A; (3) Dissolve 1.5 parts mercaptopropionate and 2 parts sodium thiosulfate in 30 parts deionized water to obtain mixture B; (4) At 20°C and under stirring, add 1 part of tert-butyl hydrogen peroxide to the reaction substrate, and then add mixture A and mixture B dropwise at the same time. Mixture A is added dropwise for 50 min, and mixture B is added dropwise for 80 min. After the addition is completed, keep warm for 30 min, and dilute with water to a solid content of 50% to obtain humic acid modified water-reducing agent. Complexed liposomes are prepared through the following steps: (1) Disperse 5 parts of in-situ porphyrin, 5 parts of N,N,N',N'-tetra(2-pyridinemethyl)ethylenediamine, 30 parts of soybean lecithin, 10 parts of cholesterol, 2 parts of sodium 1,2-dimyristic-sn-glycerol-3-phosphate and 6 parts of polyethylene glycol 400 in 60 parts of ethanol to obtain a pretreatment solution; (2) The pretreatment solution was injected into PBS buffer at 60°C and stirred for 20 min. The injection time was 30 s. Then, the ethanol was removed by rotary evaporation in a water bath at 150 mbar and 40°C to obtain complexed liposomes.

[0029] This embodiment also provides a method for preparing the above-mentioned solid waste concrete admixture, including the following steps: Humic acid-modified water-reducing agent, sodium disproportionated rosinate and complexed liposomes were added to water in sequence and stirred at 150 r / min for 20 min. Then, layered dihydroxide-coated triazabicyclodecene was added and mixed evenly to obtain a solid waste concrete admixture with a solid content of 18%.

[0030] Example 2 A solid waste concrete admixture comprises the following raw materials in parts by weight: 10 parts of humic acid modified water-reducing agent, 5 parts of complexed liposomes, 5 parts of layered dihydroxyl-coated triazabicyclodecene, and 1 part of sodium dodecyl sulfate. The humic acid-modified water-reducing agent is prepared through the following steps: (1) Add 400 parts of vinyl polyethylene glycol ether with a molecular weight of 2400, 10 parts of humic acid and 420 parts of deionized water to the reaction vessel and stir until fully dissolved to obtain the reaction substrate. (2) Mix 30 parts of maleic acid, 10 parts of polyethylene glycol monomethyl ether acrylate, 5 parts of 2-acrylamido-2-methylpropanesulfonic acid and 40 parts of deionized water evenly to obtain mixture A; (3) Dissolve 1 part pentaerythritol tetra(3-mercaptopropionate) and 0.5 parts potassium thiosulfate in 30 parts deionized water to obtain mixture B; (4) At 20°C and under stirring, add 1 part of tert-butyl hydrogen peroxide to the reaction substrate, and then add mixture A and mixture B dropwise at the same time. Mixture A is added dropwise for 50 min, and mixture B is added dropwise for 80 min. After the addition is completed, keep warm for 30 min, and dilute with water to a solid content of 50% to obtain humic acid modified water-reducing agent. Complexed liposomes are prepared through the following steps: (1) Disperse 5 parts of tetraphenylporphyrin, 4 parts of N,N,N',N'-tetra(2-pyridinemethyl)ethylenediamine, 30 parts of soybean lecithin, 10 parts of cholesterol, 2 parts of sodium 1,2-dimyristic-sn-glycerol-3-phosphate and 5 parts of polyethylene glycol 400 in 60 parts of ethanol to obtain a pretreatment solution; (2) The pretreatment solution was injected into PBS buffer at 50°C and stirred for 10 min. The injection time was 30 s. Then, the ethanol was removed by rotary evaporation in a water bath at 150 mbar and 40°C to obtain complexed liposomes.

[0031] This embodiment also provides a method for preparing the above-mentioned solid waste concrete admixture, including the following steps: Humic acid-modified water-reducing agent, sodium dodecyl sulfate and complexed liposomes were added to water in sequence and stirred at 150 r / min for 20 min. Then, layered dihydroxide-coated triazabicyclodecene was added and mixed evenly to obtain a solid waste concrete admixture with a solid content of 18%.

[0032] Example 3 A solid waste concrete admixture comprises the following raw materials in parts by weight: 12 parts of humic acid modified water-reducing agent, 10 parts of complexed liposomes, 10 parts of layered dihydroxyl-coated triazabicyclodecene, and 3 parts of triterpenoid saponins. The humic acid-modified water-reducing agent is prepared through the following steps: (1) Add 600 parts of vinyl polyethylene glycol ether with a molecular weight of 2400, 50 parts of humic acid and 420 parts of deionized water to the reaction vessel and stir until fully dissolved to obtain the reaction substrate. (2) Mix 80 parts maleic anhydride, 40 parts polyethylene glycol monomethyl ether acrylate, 30 parts 2-acrylamido-2-methylpropanesulfonic acid and 40 parts deionized water evenly to obtain mixture A; (3) Dissolve 3 parts of trimethylolpropane tris(3-mercaptopropionate) and 3 parts of dithiothreitol in 30 parts of deionized water to obtain mixture B; (4) At 20°C and under stirring, add 2 parts of tert-butyl hydrogen peroxide to the reaction substrate, and then add mixture A and mixture B dropwise at the same time. Mixture A is added dropwise for 50 minutes and mixture B is added dropwise for 80 minutes. After the addition is completed, keep warm for 30 minutes, and dilute with water to a solid content of 50% to obtain humic acid modified water-reducing agent. Complexed liposomes are prepared through the following steps: (1) Disperse 8 parts of tetrakis(4-sulfonic acid phenyl)porphyrin, 6 parts of N,N,N',N'-tetra(2-pyridinemethyl)ethylenediamine, 40 parts of soybean lecithin, 15 parts of cholesterol, 4 parts of sodium 1,2-dimyristic-sn-glycerol-3-phosphate and 10 parts of polyethylene glycol 400 in 60 parts of ethanol to obtain a pretreatment solution; (2) The pretreatment solution was injected into PBS buffer at 70°C and stirred for 30 min. The injection time was 30 s. Then, the ethanol was removed by rotary evaporation in a water bath at 150 mbar and 40°C to obtain complexed liposomes.

[0033] This embodiment also provides a method for preparing the above-mentioned solid waste concrete admixture, including the following steps: Humic acid-modified water-reducing agent, triterpenoid saponins and complexed liposomes were added to water in sequence and stirred at 150 r / min for 20 min. Then, layered dihydroxylene coated with triazabicyclodecene was added and mixed evenly to obtain a solid waste concrete admixture with a solid content of 18%.

[0034] Comparative Example 1 A solid waste concrete admixture comprises the following raw materials in parts by weight: 10 parts of humic acid modified water-reducing agent, 7 parts of layered dihydroxyl-coated triazabicyclodecene, and 2 parts of disproportionated rosinate sodium. The preparation method of the humic acid modified water-reducing agent is the same as that in Example 1.

[0035] This comparative example also provides a method for preparing the above-mentioned solid waste concrete admixture, including the following steps: Humic acid-modified water-reducing agent and disproportionated rosinate sodium are added to water in sequence and stirred at 150 r / min for 20 min. Then, layered dihydroxide-coated triazabicyclodecene is added and mixed evenly to obtain a solid waste concrete admixture with a solid content of 18%.

[0036] Comparative Example 2 A solid waste concrete admixture comprises the following raw materials in parts by weight: 10 parts of humic acid modified water-reducing agent, 5 parts of complexed liposomes, and 2 parts of disproportionated rosinate. The preparation methods of the humic acid-modified water-reducing agent and the complexed liposomes are the same as in Example 1.

[0037] This comparative example also provides a method for preparing the above-mentioned solid waste concrete admixture, including the following steps: Humic acid-modified water-reducing agent, sodium disproportionated rosinate and complexed liposomes were added to water in sequence and stirred at 150 r / min for 20 min to obtain a solid waste concrete admixture with a solid content of 18%.

[0038] Comparative Example 3 A solid waste concrete admixture comprises the following raw materials in parts by weight: 5 parts complexed liposomes, 7 parts layered dihydroxyl-coated triazabicyclodecene and 2 parts disproportionated sodium rosinate. The preparation method of the complexed liposomes is the same as that in Example 1.

[0039] This comparative example also provides a method for preparing the above-mentioned solid waste concrete admixture, including the following steps: Complexed liposomes and disproportionated sodium rosinate were added to water in sequence and stirred at 150 r / min for 20 min. Then, layered dihydroxide-coated triazabicyclodecene was added and mixed thoroughly to obtain a solid waste concrete admixture with a solid content of 18%.

[0040] Comparative Example 4 The commercially available concrete admixture has a solid content of 18% and is sourced from China Construction Western Construction New Materials Technology Co., Ltd.

[0041] Experimental Example The materials used are PO 42.5 Esheng cement, S95 mineral powder, manufactured sand with a fineness modulus of 2.6, 5~20mm continuously graded crushed stone, and a density of 2300kg / m³. 3 The fly ash from waste incineration was mixed with the admixtures of Example 1 and Comparative Examples 1-3 to prepare concrete. The concrete mix proportions are shown in Table 1. Table 1. Mix proportions of C30 concrete (kg / m³) 3 ) The workability, mechanical properties, and heavy metal leaching of concrete were compared and analyzed. The test methods were based on GB / T 50080-2016 "Standard for Test Methods of Performance of Ordinary Concrete Mixtures", GB / T 50081-2019 "Standard for Test Methods of Physical and Mechanical Properties of Concrete", GB 5085.3-2007 "Identification Standard for Hazardous Waste - Leaching Toxicity Identification" and HJ 77.3-2008 "Determination of Dioxins in Solid Waste - Isotope Dilution High-Resolution Gas Chromatography-High-Resolution Mass Spectrometry". The test results are shown in Tables 2 and 3.

[0042] Table 2 Workability of C30 Concrete Table 3 Heavy metal leaching and dioxin content in C30 concrete As can be seen from Tables 2 and 3, the admixtures prepared in Examples 1-3 significantly improve the initial and long-term fluidity of concrete, enhance the structural strength of concrete, and effectively reduce the leaching of heavy metals from solid waste concrete. The complexed liposomes in the admixtures continuously hydrolyze under alkaline conditions to form hydroxyl and carboxyl compounds, prolonging the dispersion performance of the admixtures on cement and waste incineration fly ash particles. This releases N,N,N',N'-tetra(2-pyridinemethyl)ethylenediamine, in-situ porphyrin, and sodium 1,2-dimyristoyl-sn-glycerol-3-phosphate, improving the dispersion of heavy metals such as Cr and Pb. In terms of chelation properties, polyethylene glycol enhances the affinity and encapsulation of metal chelates and the internal enrichment of dioxin organic matter, thereby improving the sealing effect of cement hydration products on heavy metals. At the same time, the layered double hydroxides gradually release triazabicyclodecene in the alkaline cement solution. Under the catalysis of the in-situ complexation of porphyrin with Fe metal and other metals to form metal complexes, the nucleophilic substance of triazabicyclodecene attacks dioxins, promoting the dechlorination and gradual quenching of dioxins. In the system, polyethylene glycol and lecithin carry the remaining layered double hydroxides into the layered double hydroxide intercalation structure, and hydrate and seal them in the double hydroxide intercalation. Compared to Example 1, which did not use complexed liposomes, Comparative Example 1 showed a slight decrease in the slump, spread, and compressive strength of the concrete after 2 hours, while the concentration of heavy metal leaching increased. Comparative Example 2, which did not use layered dihydroxyl-coated triazabicyclodecene, showed a decrease in the compressive strength of the concrete, while the concentration of heavy metal leaching and the detected content of dioxins increased. Comparative Example 3, which did not use humic acid-modified water-reducing agent, showed a decrease in concrete fluidity, a decrease in concrete strength, a decrease in the overall encapsulation performance of the concrete, and a slight decrease in the curing effect on heavy metals and dioxins. Traditional commercially available concrete admixtures cannot effectively fix heavy metals and dioxins.

[0043] The present invention has been described according to the above embodiments. It should be understood that the above embodiments do not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent transformation fall within the scope of the present invention.

Claims

1. A solid waste concrete admixture characterized by, The humic acid modified water reducing agent, the complex liposome, the layered double hydroxide coated triazabicyclodecene and the air entraining agent are mixed to obtain the air-entraining admixture.

2. The solid waste concrete admixture of claim 1, wherein The humic acid modified water reducing agent, the complex liposome, the layered double hydroxide coated triazabicyclodecene and the air entraining agent are mixed to obtain the air-entraining admixture.

3. The solid waste concrete admixture according to claim 1 or 2, characterized in that, The humic acid modified water reducing agent is prepared by mixing humic acid, 2-acrylamido-2-methylpropanesulfonic acid, polyethylene glycol monomethyl ether acrylate, an acrylic compound and a vinyl polyethylene glycol ether, and then performing polymerization under the action of an initiator and a chain transfer agent.

4. The solid waste concrete admixture of claim 3, wherein The mass ratio of the humic acid, the 2-acrylamido-2-methylpropanesulfonic acid, the polyethylene glycol monomethyl ether acrylate, the acrylic compound, the vinyl polyethylene glycol ether, the initiator and the chain transfer agent is (1-5):(0.5-3):(1-4):(3-8):(40-60):(0.1-0.5):(0.1-0.3); the temperature of the polymerization is 20-30℃, and the time is 1-3h.

5. The solid waste concrete admixture as claimed in claim 4, wherein, The initiator comprises tert-butyl hydroperoxide and a thio compound, and the mass ratio of the tert-butyl hydroperoxide and the thio compound is (1-2):(0.5-3); the chain transfer agent is a mercapto compound; and the acrylic compound is at least one of acrylic acid, maleic acid, fumaric anhydride, itaconic acid, crotonic acid and citraconic acid.

6. The solid waste concrete admixture as claimed in claim 5, wherein, The thio compound is at least one of sodium thiosulfate, potassium thiosulfate, ammonium thiosulfate, dithiothreitol and 1-thioglycerol; and the mercapto compound is at least one of mercaptopropionate, trimethylolpropane tris(3-mercaptopropionate) and pentaerythritol tetra(3-mercaptopropionate).

7. The solid waste concrete admixture as claimed in claim 1 or 2, wherein, The complex liposome is prepared by the following steps: (1) dispersing porphyrin compounds, N,N,N',N'-tetra(2-pyridylmethyl)ethylenediamine, soybean lecithin, cholesterol, 1,2-dimyristoyl-sn-glycerol-3-phosphate sodium and polyethylene glycol in an organic solvent to obtain a pretreatment solution; (2) injecting the pretreatment solution into PBS buffer and stirring, and removing the organic solvent by rotary evaporation to obtain the complex liposome.

8. The solid waste concrete admixture of claim 7, wherein The mass ratio of the porphyrin compounds, the N,N,N',N'-tetra(2-pyridylmethyl)ethylenediamine, the soybean lecithin, the cholesterol, the 1,2-dimyristoyl-sn-glycerol-3-phosphate sodium and the polyethylene glycol in the step (1) is (5-8):(4-6):(30-40):(10-15):(2-4):(5-10); the organic solvent is ethanol; the injection time in the step (2) is 30-60s, the stirring temperature is 50-70℃, and the stirring time is 10-30min; and the porphyrin compounds are at least one of in situ porphyrin, tetraphenylporphyrin, tetra(4-sulfonatophenyl)porphyrin and tetra(4-N-methylpyridyl)porphyrin.

9. The solid waste concrete admixture as claimed in claim 1 or 2, wherein, The air-entraining agent is at least one of fatty amine polyoxyethylene ether, fatty alcohol polyoxyethylene ether sodium sulfate, sodium dodecyl sulfate, disproportionated rosin acid sodium, triterpenoid saponins, and sodium α-olefin sulfonate.

10. The method of producing a solid waste concrete admixture according to any one of claims 1 to 9, characterized by, Includes the following steps: Humic acid-modified water-reducing agent, air-entraining agent and complexed liposomes are added to water in sequence and stirred evenly. Then, layered dihydroxylene is added to coat triazabicyclodecene to obtain solid waste concrete admixture.

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