37 results about "Magnesium phosphate" patented technology

The present application relates to thin film magnesium battery zirconium magnesium phosphate solid electrolyte target material, preparation method and thin film magnesium battery, belong to magnesium battery technical field. Including: magnesium salt powder is mixed with diaphosphorus pentoxide and zirconium oxide powder to obtain mixed powder; the mixed powder is put into a closed ball mill tank and mixed with zirconium oxide balls, then a dispersing agent is added and mixed and ball milled; then a binder is added to the ball mill tank and ball milled; the synthesized powder after ball milling is sieved through a 500 mesh sieve, the sieved synthesized powder is poured into a vibrating mold, pressed, and a die pressed blank is formed; the blank is put into a cold isostatic pressing machine and pressed and pressure maintained, to obtain a zirconium magnesium phosphate solid electrolyte target material blank after cold isostatic pressing; the zirconium magnesium phosphate solid electrolyte target material blank is put into an atmosphere sintering furnace or a vacuum sintering furnace, after multi-stage heat preservation, the furnace is naturally cooled to room temperature, to obtain a thin film magnesium battery zirconium magnesium phosphate solid electrolyte target material. The composition of the solid electrolyte target material of the present application is uniform, facilitating thin film deposition.

This invention belongs to the field of building repair materials technology and provides a water-resistant and freeze-resistant magnesium phosphate cement repair mortar and its preparation method. The raw materials of the water-resistant and freeze-resistant magnesium phosphate cement repair mortar include: modified magnesium oxide, potassium dihydrogen phosphate, admixture, retarder, fine aggregate, water-reducing agent and water. The preparation method includes: (1) dry mixing: the modified magnesium oxide, potassium dihydrogen phosphate, admixture, fine aggregate and retarder are dry mixed to obtain a dry material system; (2) wet mixing and molding: half the mass of water is added to the dry material system, and after stirring, the remaining mass of water and water-reducing agent are added, and stirring is continued to obtain the water-resistant and freeze-resistant magnesium phosphate cement repair mortar. The repair mortar has excellent water resistance, freeze resistance and mechanical properties. The preparation method has a simplified preparation process, low production cost, and can realize the high-value utilization of solid waste, meeting the needs of rapid repair of building projects in harsh environments such as dampness and cold.

The present application relates to the field of agricultural soil improvement and orchard fertilization technology, and discloses a kind of southern red soil area orchard annual green manure covering and carbon-increasing quality improving method, including that mature livestock and poultry manure is mixed with industrial grade calcium-magnesium phosphate fertilizer and applied to surface soil before green manure sowing;Sowing Indian cowpea in spring, mixed sowing Chinese milk vetch and field radish in autumn;Green manure of leguminous plants is mowed in situ when it is in full bloom to initial pod stage to make it flat;Uniformly spray directional wood-decay fungi complex liquid to the surface of green manure;Use pyroligneous acid to wet crushed dry crop straw, cover micro-acid straw on the surface of green manure;Mechanically subsoil in the following autumn, and inject PAM composite biomass charcoal suspension into the bottom of subsoiling groove simultaneously.The present application neutralizes and intercepts ammonia gas released by green manure to block nitrogen volatilization by using micro-acid straw, accelerates the degradation of macromolecular lignocellulose by using wood-decay fungi, and constructs deep stable carbon sink by combining with deep injection of porous carbon suspension, thereby effectively improving the overall carbon pool capacity of red soil profile.

The application belongs to the technical field of cement-based grouting and provides a water-based epoxy resin mortar rapid repair material for rapid repair of high-iron tunnel water leakage disease and a preparation process, which is made of the following components: 80-110 parts of magnesium phosphate cement, 5-20 parts of water-based epoxy resin, 8-25 parts of epoxy resin curing agent, 10-25 parts of fly ash, 5-10 parts of retarder, 1-2 parts of defoaming agent and 12-25 parts of water; the magnesium phosphate cement comprises magnesium oxide and phosphate; the magnesium oxide is a mixture of dead-burned magnesium oxide and light-burned magnesium oxide, and the mass ratio of the two is 3:1-20:1. The grouting material prepared by the formula and the preparation method has the advantages of short setting time, high early strength, strong wet adhesion, good durability and good fluidity.

This invention relates to the field of ceramic materials, specifically disclosing a high water-resistant magnesium phosphate cement-based foam ceramic and its preparation method. The foam ceramic comprises the following components: 100-150 parts magnesium phosphate cement, 1-5 parts retarder, 5-20 parts foaming agent, 1-5 parts foam stabilizer, 5-15 parts lutetium ion source, 1-8 parts methylene phosphonic acid component, and 30-60 parts water. The method includes: (1) mixing the lutetium ion source, methylene phosphonic acid component, and water to obtain a complex solution. (2) mixing the magnesium phosphate cement and foam stabilizer, then adding the complex solution to the mixture and mixing to obtain a slurry. (3) adding the foaming agent to the slurry and allowing it to stand for foaming, followed by curing to obtain the foam ceramic. This invention not only effectively reduces the solubility of magnesium phosphate cement hydration products, but also combines CO2 foaming to generate a low-solubility magnesium carbonate shell, significantly improving the long-term stability of the foam ceramic in an aquatic environment while maintaining high porosity.

This invention belongs to the field of new building materials technology, specifically relating to a retarder-free magnesium phosphate repair material based on organic waste liquid and its preparation method. The retarder-free magnesium phosphate repair material based on organic waste liquid of this invention is mainly composed of the following raw materials in parts by weight: 100 parts of recalcined magnesium oxide, 130-180 parts of phosphate, 10-20 parts of fly ash, 190-300 parts of aggregate, and 43-63 parts of water; the recalcined magnesium oxide is prepared by grinding sintered magnesia under the condition of a grinding aid; the grinding aid is organic waste liquid. This invention utilizes the continuous role of organic waste liquid in both stages of the magnesium phosphate repair material's life cycle, forming a closed-loop process. Magnesium oxide treated by this grinding process can be directly used to prepare magnesium phosphate cement with excellent workability and a clear retarding effect.

This invention belongs to the field of flame retardant technology for polymer materials, specifically relating to a red phosphorus / magnesium phosphate composite flame retardant and its preparation method, as well as a flame retardant functional masterbatch and its preparation method. The composite flame retardant provided by this invention fully leverages the synergistic flame retardant effects of red phosphorus's efficient catalytic char formation and magnesium phosphate's stabilizing smoke suppression and acid neutralization. By melt-blending the composite flame retardant with a polymer matrix, a high-performance flame retardant functional masterbatch can be obtained. The composite flame retardant prepared by this invention effectively overcomes the shortcomings of traditional red phosphorus, such as easy moisture absorption, acid production, processing instability, and poor compatibility with the matrix. It can impart excellent flame retardant properties to polymer materials at relatively low addition levels, while significantly reducing the heat release rate and better maintaining the mechanical properties of the matrix material. It is safe to produce, the process is controllable, and it is suitable for the efficient flame retardant modification of various engineering plastics such as polyolefins, polyamides, and polyesters.

This invention relates to the field of building materials technology, specifically disclosing a method for improving the strength of silicate clinker by using phosphate tailings and phosphogypsum as raw material admixtures. The method includes the following steps: S1, using phosphate tailings and phosphogypsum as raw material admixtures, designing a proportion where, by mass percentage, the phosphate tailings content is 2%-15% and the phosphogypsum content is 0.4-2%; mixing and grinding the phosphate tailings and phosphogypsum with other raw materials; S2, the powder obtained in S1 is preheated, decomposed, calcined, and cooled to prepare silicate clinker. In this invention, phosphate tailings mainly replace limestone, a calcareous material in the raw material, to reduce production costs. The main function of phosphogypsum is to regulate the relative content of C3S and C2S in the clinker and the proportion of M1 type C3S, thereby optimizing and improving the 3-day and 28-day strength of the clinker. This invention not only consumes two major solid wastes—high-magnesium phosphate tailings and phosphogypsum—but also improves the strength of silicate clinker.

This invention discloses a fluorite crystal impurity leachate based on microbial metabolites and its preparation process, relating to the field of fluorite crystal impurity leachate preparation technology. The raw materials include: microbial metabolic fermentation broth, chelation solution, synergistic solution, modified glucosamine magnesium phosphate microsphere slurry, modified hydroxyapatite nanosphere slurry, modified hydroxypropyl methylcellulose ether slurry, and deionized water. In this invention, the addition of modified glucosamine magnesium phosphate microsphere slurry significantly improves the dispersibility and stability of the microspheres, enabling in-situ adsorption of free fluoride ions in the system, eliminating the inhibitory effect of fluoride ions on microbial metabolism, and simultaneously helping to stabilize the pH of the leaching system, providing a suitable environment for impurity leaching. It also synergistically enhances the solid-liquid separation effect without reducing the grade of fluorite concentrate. The addition of modified hydroxyapatite nanosphere slurry provides excellent selective adsorption capacity, preferentially adsorbing difficult-to-remove impurities such as quartz and silicates, improving the precision of deep impurity removal.

The present application relates to the technical field of light building materials, in particular to a long-acting antibacterial and mildew-proof ceramic tile adhesive and a preparation process thereof. The present application overcomes the problems of poor tensile bonding strength, poor anti-sliding property and lack of long-term antibacterial and mildew-proof property of traditional inorganic adhesives. A cross-linking network is constructed by a magnesium phosphate inorganic framework, a modified emulsion and tackifying resin, and combined with antibacterial and mildew-proof materials and hydrophobic closed-void aggregate. The adhesive not only has excellent anti-sliding property and transverse deformation property, but also blocks water penetration through a dense hydrophobic structure, realizes intelligent slow release of metal ions and heat aging resistance, has good long-acting antibacterial property, zero-level mildew-proof property and light thermal insulation property, and the adhesive meets the performance requirements of adhesive in the JC / T 547-2017 standard.

This invention proposes a passivation remediation agent for arsenic-contaminated soil and its application. The passivation remediation agent constructs a ternary synergistic remediation system of zero-valent iron, phosphate, and dithiocarbamate through multi-component synergistic action, mainly including four core mechanisms: redox-adsorption-precipitation-chelation. Simultaneously, biochar, as a carrier, can reduce the risk of zero-valent iron agglomeration and deactivation, maintaining its high reactivity and significantly improving arsenic fixation efficiency. The introduction of dithiocarbamate can fill the gap in the insufficient fixation capacity of traditional iron-based materials for As(III). The calcium phosphate and magnesium phosphate used in this invention hydrolyze in the soil, adjusting the soil pH to a neutral or slightly alkaline range, reducing the solubility of arsenic. The positively charged surface of the iron oxide further facilitates the fixation of negatively charged AsO4. 3‑ Adsorption occurs. Furthermore, the alkaline properties of biochar further enhance this effect.

The application discloses a nano BUCT-10 molecular sieve, a synthesis method thereof and application of the molecular sieve in catalyzing linear olefin skeletal isomerization. The molecular sieve has a magnesium aluminum phosphate framework composition, which can be expressed as Mg x Al y PO4, wherein 0

The application discloses a composite polymeric aluminum ferric chloride water purifying agent and a preparation method and application thereof, and belongs to the technical field of sewage treatment. The polymeric aluminum ferric chloride powder is prepared through hydrothermal reaction and alkalization polymerization after citric acid modified nano magnesium phosphate is prepared through hydrothermal reaction, then the acidized attapulgite is used as a carrier to load the polymeric aluminum ferric chloride, a composite material is obtained, and finally the composite material is compounded with the citric acid modified nano magnesium phosphate, aged and dried to obtain the water purifying agent. The stable composite structure is constructed through multi-stage assembly, the synergistic effect of electric neutralization, carrier skeleton and deep chelation is utilized, suspended solids, phosphorus, COD and heavy metal ions can be synchronously and efficiently removed, the formed floc is compact and stable and has strong impact resistance, the problems of single function and easy attenuation of synergistic effect of traditional water purifying agents are fundamentally overcome, and the water treatment scene with high requirements on stability, reliability and long-term performance consistency of the agent can be met.

The application discloses an early-strength corrosion-resistant cement-heat-shrinkable fiber three-dimensional mesh fabric composite material, which comprises a heat-shrinkable three-dimensional mesh spacer fabric matrix, iron aluminate cement modified magnesium phosphate cement filled in the matrix and a water-permeable and grout-resistant heat-shrinkable fiber non-woven fabric packaging layer arranged on the surface of the matrix; the spinning fiber of the three-dimensional mesh spacer fabric matrix comprises first temperature-shrinkage-induced anti-cracking fibers matched with the modified cement hydration heat release peak value and high modulus sheath layer temperature-shrinkage-core material phase change composite fibers; and the spinning fiber of the water-permeable and grout-resistant heat-shrinkable fiber non-woven fabric packaging layer comprises second temperature-shrinkage-induced fibers with low shrinkage rate. The application firstly combines the high hydration heat of the iron aluminate cement modified magnesium phosphate cement with the heat response characteristics of the heat-shrinkable fiber, and the two can synergistically act to simultaneously realize the improvement effects of self-regulation of stress, optimization of microstructure, regulation of interface transition zone and self-anti-cracking; and the construction method is simple, short in period and wide in applicability.

This invention discloses a method and apparatus for preparing a soil pollution remediation engineering catalyst, specifically belonging to the field of soil remediation technology. The soil pollution remediation engineering catalyst is a modified zinc-iron oxide mineral piezoelectric material, mainly composed of multilayer magnetically responsive zinc-iron oxide nanoblocks supported on brominated polyhydroxy magnesium phosphate foam. The preparation method includes the preparation of multilayer magnetically responsive zinc-iron oxide nanoblocks, the preparation of brominated polyhydroxy magnesium phosphate foam, and the preparation of the modified zinc-iron oxide mineral piezoelectric material. The application apparatus of this soil pollution remediation engineering catalyst includes an electromagnetic-piezoelectric catalytic system and a piezoelectric catalytic auxiliary system. The modified zinc-iron oxide mineral piezoelectric material is forced to deform by magnetic force and the mechanical force generated by mixing, thereby activating persulfate degradation of pollutants in the soil. This invention features high treatment efficiency, low energy consumption, and environmental friendliness, providing a novel remediation method for soil remediation.

Disclosed is a magnesium phosphate-based cement grouting material, a preparation method therefor and use thereof. Raw materials of the magnesium phosphate-based cement grouting material include a component A and a component B; the component A includes the following raw materials in parts by weight: 140-200 parts of calcined magnesium oxide, 0-30 parts of bentonite, 0.2-0.5 part of hydroxypropyl methyl cellulose, 1-10 parts of additive and 70-140 parts of water; the component B includes the following raw materials in parts by weight: 70-100 parts of first dihydric phosphate, 20-50 parts of pretreated polymer water-absorbent resin, 0.5-2 parts of sodium polyacrylate and 30-70 parts of water. The magnesium phosphate-based cement grouting material has the advantages of low shrinkage, short and adjustable setting time, high compressive strength, simple construction, low cost, environmental friendliness, good grout injectivity, good resistance to water dispersibility and good durability in a long-term soaking environment.

The application belongs to the technical field of building materials, and discloses a self-adaptive nutrient slow-release aggregate, a preparation method and application thereof. The self-adaptive nutrient slow-release aggregate has a core-shell structure, and the mass ratio of the core to the shell is (4-6):1. The core comprises raw materials in the following mass percentages: potassium-magnesium phosphate cement 45-60%, sludge 20-30%, biomass waste 10-20%, nutrient substance 2-5%, and solid waste admixture 5-10%. The shell comprises raw materials in the following mass percentages: potassium-magnesium phosphate cement 70-90%, waste thermal shrinkage particulate matter 5-20%, and solid waste admixture 5-10%. The self-adaptive nutrient slow-release aggregate is prepared by using potassium-magnesium phosphate cement and various solid wastes as main components and adding nutrient substances required by plants, and has a core-shell structure, so that the core is rich in pores for storing nutrients, and the shell can self-adaptively control mass transfer. The self-adaptive nutrient slow-release aggregate is particularly suitable for a substrate layer of a green roof.

The application relates to an annealing method of a thin-film magnesium battery zirconium magnesium phosphate solid electrolyte target material, a solid electrolyte target material and a battery, and belongs to the technical field of magnesium batteries. After four-stage heat preservation, the annealing method is adopted to cool the furnace to 110-125 DEG C for continuous heat preservation, then the furnace is naturally cooled to room temperature, and the annealed thin-film magnesium battery zirconium magnesium phosphate solid electrolyte target material is obtained; the first-stage heat preservation temperature is less than the second-stage heat preservation temperature, the second-stage heat preservation temperature is less than the third-stage heat preservation temperature, the third-stage heat preservation temperature is less than the fourth-stage heat preservation temperature, and the fourth-stage heat preservation temperature is 660-680 DEG C. The thin-film magnesium battery zirconium magnesium phosphate solid electrolyte target material treated by the annealing method is uniform in composition, free of segregation, good in grain size consistency, free of cracks, free of stratification, free of bulges, convenient to machine in subsequent machining, and convenient to thin-film deposition in the preparation of the all-solid-state thin-film magnesium battery.

This invention relates to the field of metal surface treatment technology, specifically to a low-cost, high-corrosion-resistant micro-arc oxidation film for magnesium alloys and its preparation method. First, the magnesium alloy workpiece is pretreated. Then, an electrolyte for the micro-arc oxidation process is prepared. The pretreated magnesium alloy workpiece is used as the anode, and stainless steel as the cathode, placed in the electrolyte for micro-arc oxidation, ultimately yielding a dense oxide film. This invention utilizes an externally controlled electrical parameter process of "online monitoring and regulation control + composite carrier wave," combined with a low-energy-consumption electrolyte system, to achieve the desired dense oxide film. The main components of the oxide film are magnesium silicate, magnesium phosphate, magnesium oxide, magnesium fluoride, and zirconium oxide, resulting in high film hardness and improved wear resistance. It achieves a neutral salt spray test rating of ≥480h (10μm) at level 9, meeting the performance requirements of automotive parts and suitable for large-scale industrial production, with a comprehensive energy consumption reduction of 50%~60%.

The application discloses an unmanned aerial vehicle spraying fireproof magnesium phosphate cement-based material and a fire extinguishing method thereof, and belongs to the technical field of intelligent construction, and aims to solve the core pain points of difficult fire extinguishing, high rekindling rate and inability of personnel to operate in close proximity in high-risk complex scenes such as extreme emergency, high-rise buildings and chemical industry parks. The material is a two-component composite system, and based on heavy-burning magnesium oxide, the A component powder comprises heavy-burning magnesium oxide, fly ash, borax, expanded graphite and aluminum hydroxide; and the B component comprises ammonium dihydrogen phosphate and water. The fire extinguishing unmanned aerial vehicle hovers at a distance of 2-3 m from the fire source, temperature data based on infrared thermal imaging detection is used to divide 1-5 level regions, precise spraying is realized, when the remaining amount of the material box is less than or equal to 10%, the supply unmanned aerial vehicle completes electromagnetic adsorption aerial box changing in a safe airspace of greater than or equal to 50 m in the fire field, and the limitation of traditional fire extinguishing technology that is low in material efficiency and has a short supply chain is broken, and the material can be efficiently adapted to high-risk scenes such as high-rise buildings and chemical industry parks.

This invention relates to the field of cement building materials, specifically disclosing a cement-based protective material with both ion trapping and induced passivation functions and its application. The cement-based protective material comprises the following components: 95-100 parts by weight of magnesium phosphate cement, 4-6 parts by weight of retarder, and 20-25 parts by weight of composite modifier. The composite modifier comprises modified dry powder, calcium-containing dry powder, mixing water, and a dispersant, and the modified dry powder is obtained by calcining a layered bimetallic hydroxide with an aluminum source. The cement-based protective material of this invention exhibits high Cl- content... ‑ SO4 2‑ In addition to its excellent impermeability in CO2 environments, it can also actively capture corrosive ions, promote the formation and maintenance of a stable passivation film on the steel surface, thereby providing more long-lasting and reliable protection for marine steel structures.

This invention relates to the field of repair mortar technology, specifically to a freeze-thaw resistant repair material for hydraulic engineering tunnel structures and its preparation method, comprising the following raw materials in parts by weight: 300-350 parts magnesium phosphate cement, 1100-1200 parts aggregate, 40-50 parts fly ash, 40-50 parts additive powder, 4-5 parts polycarboxylate superplasticizer, 3-5 parts polypropylene fiber (from the field of repair mortar technology), and 180-200 parts water. The C-S-H gel generated by the reaction of calcined eggshell powder and fly ash effectively fills the internal pores of the material, reducing the space for water retention. The modified material transforms the eggshell powder from hydrophilic to hydrophobic, further preventing water intrusion. The spheroidized aggregate eliminates stress concentration at the corners. These effects work together to resist the damage to the material structure caused by ice crystal expansion during freeze-thaw cycles, significantly improving the material's freeze-thaw resistance and enabling it to adapt to the complex environment of low-temperature freeze-thaw cycles and humidity in tunnels for a long time.

This invention belongs to the technical field of neutron shielding materials, and relates to a magnesium phosphate cement-based neutron shielding material containing rare earth borides, its preparation method, and its application. This invention discloses a method for preparing a magnesium phosphate cement-based neutron shielding material containing rare earth borides, comprising the following steps: weighing a solid mixture including recalcined magnesium oxide, potassium dihydrogen phosphate, boric acid, and rare earth borides, mixing it with water according to a solid-liquid ratio, filling the mixture into a mold, curing at 25±3℃ for 0.1~5h, followed by air oxygen curing for 1~6 days, to obtain the magnesium phosphate cement-based neutron shielding material containing rare earth borides; the molecular formula of the rare earth borides is RE. x B y The rare earth boride-containing magnesium phosphate cement-based neutron shielding material of this invention can achieve high strength within a short curing period and has excellent neutron shielding performance, fully meeting the requirements for use as a neutron shielding substrate for rapid repair.

The application relates to a cation-doped iron phosphate and a preparation method and application thereof, the preparation method comprising the following steps: firstly, mixing iron-containing magnesium phosphate and an extraction system to carry out extraction aluminum removal to obtain aluminum-removed phosphoric acid; secondly, mixing the aluminum-removed phosphoric acid in step (1), an iron source and an oxidizing agent to obtain iron phosphate dihydrate; and finally, calcining the iron phosphate dihydrate in step (2) to obtain Mg 2+ Doped iron phosphate; by utilizing iron ions and magnesium ions in iron-containing magnesium phosphate, magnesium ions are doped into the crystal lattice of iron phosphate to produce defects, and Mg 2+ The doped iron phosphate has a yield of preferably more than 89.89%, the utilization rate of Mg in the raw material is more than 88.16%, the utilization rate of Fe is preferably more than 98.70%, the doped iron phosphate has high electrochemical performance, the preparation process is simple, and the doped iron phosphate provides low-cost high-quality raw materials for lithium iron phosphate materials.

This invention relates to the field of cement building materials, specifically disclosing a cement-based protective material with both ion trapping and induced passivation functions and its application. The cement-based protective material comprises the following components: 95-100 parts by weight of magnesium phosphate cement, 4-6 parts by weight of retarder, and 20-25 parts by weight of composite modifier. The composite modifier comprises modified dry powder, calcium-containing dry powder, mixing water, and a dispersant, and the modified dry powder is obtained by calcining a layered bimetallic hydroxide with an aluminum source. The cement-based protective material of this invention exhibits high Cl- content... ‑ SO4 2‑ In addition to its excellent impermeability in CO2 environments, it can also actively capture corrosive ions, promote the formation and maintenance of a stable passivation film on the steel surface, thereby providing more long-lasting and reliable protection for marine steel structures.

The application relates to a sodium iron manganese magnesium phosphate positive electrode material and a preparation method thereof, and belongs to the technical field of sodium batteries. The preparation method comprises the following steps: (1) under the stirring state, magnesium sulfate solution, ferrous sulfate solution, manganous sulfate solution and sodium carbonate solution are added into a reaction kettle; (2) the slurry is filtered and washed, the filter cake after washing is added with water to prepare a slurry, then phosphoric acid, sodium bicarbonate solution and sucrose are added into the reaction kettle, and then the slurry is reacted under the action of an alternating current field and a magnetic field for 3-6 hours; (3) the slurry after reaction is filtered, washed and dried to obtain sodium iron manganese magnesium phosphate; (4) rapid sintering and mechanical crushing are carried out to obtain the sodium iron manganese magnesium phosphate positive electrode material. The material prepared by the application has higher crystallinity and better carbon coating effect, so that the synthesized material has higher capacity, more excellent rate performance and longer cycle life compared with the material synthesized without adding an electric field and a magnetic field.

The application discloses a preparation process of a marine concrete structure surface anti-erosion cement-based material, and comprises the following steps: (1) putting calcined hydrotalcite powder into a barium hydroxide hot solution for dipping treatment to obtain Ba 2+ @LDHs powder. (2) uniformly mixing serpentine powder, calcium nitrate and water, heating and keeping warm, then continuously keeping warm and aging under stirring after dropwise adding a sodium silicate solution, then separating a solid product, calcining the solid product, grinding the calcined product to obtain modified serpentine powder. 2+ (3) mixing magnesium phosphate cement, Ba @LDHs, modified serpentine powder and a retarder powder, and grinding to obtain modified magnesium phosphate cement powder. (4) uniformly mixing the modified magnesium phosphate cement powder, emulsified asphalt, inorganic fillers, fibers and water. The cement-based material has good bonding capacity with the concrete structure, reduces structure protection failure caused by falling, and simultaneously improves the anti-erosion capacity to chloride ions and sulfate ions.