1455 results about "Aluminate" patented technology

The invention discloses solid-waste-based fluid-state solidified soil and a preparation method thereof, and belongs to the technical field of solid waste resource utilization. Raw soil is used as a base material, a curing agent composed of steel slag, granulated blast-furnace slag, gypsum, fly ash, aluminate and other industrial solid waste, a flocculating agent, a conditioning agent, a modifying agent, a stabilizing agent and a soil modifying agent are doped, and then the solid-waste-based fluid-state solidified soil is prepared. Adding water and stirring to form premixed flow-state solidified soil; comprising dry powder and water, and the mass ratio of the water to the dry powder is 0.65-0.75; the dry powder comprises the following components in parts by mass: 80-85 parts of raw soil, 10-15 parts of a curing agent, 2-5 parts of a flocculating agent, 0.5-1.5 parts of a conditioning agent, 1-3 parts of a modifying agent, 0.2-0.4 part of a stabilizing agent and 3-5 parts of a soil modifying agent. The solid-waste-based fluid-state solidified soil prepared by the method has the characteristics of high fluidity, high strength, relatively good water stability, low cost and the like, is beneficial to actual production, and conforms to a green development mode.

The invention discloses a sulfur-manganese composite autotrophic denitrification filler as well as a preparation method and application thereof, and belongs to the technical field of environmental functional materials and polluted water treatment. The sulfur-manganese composite autotrophic denitrification filler contains manganese salt, a sulfur-based component and a cement-based component, the manganese salt comprises one or more of manganese carbonate, calcium manganese ore and rhodochrosite; the sulfur-based component comprises sulfur and sulfur manganese ore; the cement-based component comprises cement, fly ash pottery sand, silica fume, blast furnace slag and metakaolin; the cement comprises one or more of Portland cement, iron aluminate cement and sulphoaluminate cement. The nitrogen removal efficiency of the sulfur-manganese composite autotrophic denitrification filler is superior to that of a sulfur autotrophic denitrification system, the sulfate concentration and nitrite nitrogen accumulation in effluent are remarkably reduced, the service life of the filler is prolonged, and the efficient utilization rate of the material is improved.

The invention discloses sound-insulation and heat-insulation building mortar and a preparation method thereof, and relates to the technical field of building materials, the sound-insulation and heat-insulation building mortar comprises, by weight, 42-48 parts of a cementing material, 15-25 parts of an auxiliary material, 17-22 parts of lightweight aggregate, 30-35 parts of a functional filler, and 1-2 parts of an additive; the cementing material is a mixture of sulphoaluminate cement and Portland cement; the auxiliary material is a mixture of fly ash and quartz sand, the lightweight aggregate is a mixture of 20-40-mesh hollow vitrified microbeads and 70-90-mesh hollow vitrified microbeads, and the mass ratio of the hollow vitrified microbeads to the hollow vitrified microbeads is 1: (2-3); the functional filler is a mixture of modified waste rubber particles and modified fibers; the additive is a mixture of a polycarboxylate superplasticizer and hydroxypropyl methyl cellulose ether. The mortar disclosed by the invention is good in thermal insulation performance and excellent in mechanical property, the method disclosed by the invention is simple to operate and low in cost, and the prepared mortar is excellent in performance.

The invention discloses a phosphorus removal filler and a preparation method and application thereof, and belongs to the technical field of fillers. Sulphoaluminate cement, chitosan, sodium alginate and calcium peroxide are uniformly mixed in a nitric acid solution in an amino-containing coupling agent, then foaming and pore forming are performed under steam, and the phosphorus removal filler is prepared. And finally, uniformly mixing with titanium dioxide, sodium silicate, a ferrous sulfate solution and sodium borohydride to obtain the phosphorus removal filler with an excellent phosphorus removal effect, and the phosphorus removal filler has a rich pore structure and adsorption activity, can sufficiently perform physical adsorption on phosphorus elements, and has a good phosphorus removal effect. Meanwhile, the phosphorus removal filler further has excellent surface complexing activity and photocatalysis, insoluble salt precipitates can be generated through reaction of iron elements and calcium elements and phosphate in water, so that total phosphorus is removed, the material is ground after adsorption saturation and put into a fish pond to serve as a phosphorus supplementing material, resource recycling can be achieved, and the cost is reduced. Wide application prospects are realized.

The invention relates to the technical field of cement-based repair mortar, and particularly discloses a preparation method of an early-strength quick-hardening anti-carbonization cement-based repair mortar material, which comprises the following steps: (1) uniformly mixing calcium silicate or pseudo-wollastonite and saturated lime water, adding basalt fiber, and carrying out heating reaction, and uniformly mixing the fiber with sodium silicate powder, calcining in a protective atmosphere, uniformly mixing the obtained fiber with saturated lime water, and drying to obtain the anti-carbon modified fiber. And (2) uniformly mixing red mud, silica fume, sodium silicate powder and water, curing, grinding, and calcining the powder to obtain the anti-carbonization additive. And (3) mixing sulphoaluminate cement, fine aggregate, solid waste-based filler, the anti-carbon modified fiber, the anti-carbonization additive, a water reducing agent and a defoaming agent, adding mixing water, and uniformly stirring to obtain the cement-based repairing mortar material. According to the invention, the carbonization resistance of the sulphoaluminate cement-based repair mortar is effectively improved, the durability is improved, and the problem of strength shrinkage in the later period is prevented.

The invention provides an early-strength rapid-repair grouting material and a preparation method thereof, and the early-strength rapid-repair grouting material is mainly prepared from the following raw materials: 50 to 150 parts of sulphoaluminate cement, 10 to 150 parts of aluminate cement, 200 to 350 parts of a regenerated gelling powder material, 1200 to 1400 parts of quartz sand, 50 to 100 parts of silica fume, 10 to 150 parts of mineral powder, 10 to 100 parts of fly ash, 15 to 50 parts of a composite retarder, 0.1 to 2 parts of a water reducing agent and 1 to 10 parts of an early strength agent. 0.01 to 1 part of a water-retaining agent and 200 to 300 parts of water. The early-strength quick-repair grouting material is characterized in that activated low-cementitious active mineral solid waste is adopted as a main cementitious material, and the product has excellent construction stability, low-carbon weather resistance, corrosion resistance, micro-expansion quick-hardening early strength and economical efficiency.

The invention belongs to the technical field of rare earth functional materials, and particularly relates to a rare earth aluminate low-temperature magnetic refrigeration material and a preparation method and application thereof.The preparation method comprises the following steps that 1, rare earth metal nitrate and aluminum nitrate are added into water to be mixed, and a mixed solution is prepared; adding ammonia water into the mixed solution to prepare a precipitate; (2) carrying out annealing treatment on the precipitate to prepare a metal oxide; and (3) calcining the metal oxide to obtain the rare earth aluminate low-temperature magnetic refrigeration material. The rare earth aluminate which has the characteristics of stable structure, low preparation cost, strong mechanical property, high magnetic density and the like and is prepared by adopting a coprecipitation method and combining a high-temperature sintering technology has more excellent magnetocaloric properties in a low-temperature region.

The invention provides a modified coal gangue-based large-flow-state grouting and water plugging material and a preparation method thereof. Comprising 80-90 parts of a coal gangue sample, 1-5 parts of Portland cement, 1-5 parts of sulphoaluminate cement, 0.51-3 parts of a polycarboxylic acid water reducing agent, 1-4 parts of cellulose ether with the viscosity of 200w, 0.1-5 parts of a calcium oxide expanding agent, 0.5-5 parts of a plastic expanding agent, 0.5-1 part of redispersible latex powder, 0.5-5 parts of polyacrylamide with the molecular weight of 1000 and water, and the water-material ratio is 0.4. According to the modified coal gangue-based large-flow-state grouting and water plugging material and the preparation method thereof, the cement consumption can be remarkably reduced, the cost is reduced, the utilization rate of solid wastes (such as coal gangue) is increased, and the material has good flow-state performance and adjustable setting time; the method is suitable for deep and large shaft surrounding rock water seepage treatment in coal mining and other mine engineering.

The invention discloses shrinkage-free aluminoferrite cement-based ultra-high performance concrete and a preparation method thereof, and belongs to the technical field of novel wall materials, and the shrinkage-free aluminoferrite cement-based ultra-high performance concrete comprises the following components: an activated cementing material, mineralized aggregate, an additive, reinforced fibers and mixing water. Due to the slow release effect of the methyl cellulose coating on the composite expanding agent, precise compensation of self-constriction is achieved, and contraction deformation in the curing and using process is effectively inhibited. Due to the unique mineral composition of the aluminoferrite cement, the early strength of the concrete is sharply improved, and the production cycle of prefabricated parts is greatly shortened. The steel fibers subjected to sand blasting and pre-wrapping modification can effectively bridge microcracks in the concrete and limit crack propagation; the polycarboxylate superplasticizer disperses the modified carbon nanofibers, crack initiation is inhibited from the microscopic level, and mechanical properties such as fracture resistance and impact resistance of the joint part and the prefabricated part are remarkably improved through cooperation of the polycarboxylate superplasticizer and the modified carbon nanofibers.

The invention relates to the technical field of cement materials, in particular to a red-mud-containing steel slag composite cementing material and a preparation method thereof.The method comprises the steps that red mud, slag, steel slag, desulfurized gypsum and sulphoaluminate cement clinker are subjected to dry mixing to obtain an initial mixture; determining whether the excitation capability of the potential hydration activity reaches the standard or not based on the alkaline matching index, and adjusting the weight part of the sulphoaluminate cement clinker; adding a composite exciting agent to obtain activated slurry; determining whether the dispersion effect of the flocculation structure of the initial mixture is qualified or not based on the dispersion index of the flocculation structure, and adjusting the ball milling rotating speed; adding a polymer emulsion to obtain an initial composite cementing material; determining whether the synergistic enhancement effect of the polymer emulsion and the activated slurry is qualified or not based on the synergistic enhancement index, and adjusting the dripping rate of the polymer emulsion; the steel slag composite cementing material containing the red mud is obtained. The preparation stability of the red mud-containing steel slag composite cementing material is improved.

The invention discloses a high belite sulphoaluminate cement-based two-component grouting material and a preparation method thereof. The grouting material comprises a gelling component and a coagulating reinforcing component, wherein the gelling component is prepared from a high belite sulphoaluminate cement clinker and an additive A; the admixture A comprises a water reducing agent, a retarder and slow-release minerals; the coagulating and reinforcing component comprises ordinary Portland cement clinker, calcium hydroxide, gypsum and an additive B; the admixture B comprises a water reducing agent and an early strength agent. According to the high belite sulphoaluminate cement-based grouting material, the formula composition of the high belite sulphoaluminate cement-based grouting material is optimized, so that the hydration process of the high belite sulphoaluminate cement is more continuous and lasting, and the compressive strength of the obtained high belite sulphoaluminate cement-based grouting material can be continuously improved.

The invention discloses high-strength concrete and a preparation method thereof in the field of concrete. The high-strength concrete is prepared from the following raw materials in parts by weight: superfine sulphoaluminate cement; coarse aggregate; quartz sand; silica fume; coal ash; nano metakaolin; silicon carbide whiskers; a graphene oxide; a pH responsive microcapsule; coating the steel fibers with liquid metal; a carbon nanotube; and a polycarboxylic acid water reducer. Release of the repairing agent is accurately regulated and controlled by adopting the pH response microcapsule, the interface performance is enhanced by combining with the liquid metal coating steel fiber, and the composite dispersion process of the nano material is optimized. Wherein the environment response efficiency of the microcapsule is remarkably improved through the collaborative design of a calcium oxide-slow release agent system and a methyl methacrylate / acrylic acid copolymerization shell layer; according to the gallium-based liquid metal coating, metallurgical bonding of fibers and a matrix is achieved through the low-melting-point characteristic, and traditional physical bonding limitation is broken through.

The invention belongs to the field of grouting materials, and discloses a composite grouting material as well as a preparation method, a construction method and application thereof. The composite grouting material comprises the following components: sulphoaluminate cement clinker powder, Portland cement clinker powder, a reinforcing agent, a coagulant and a modifier, the reinforcing agent comprises superfine mineral powder, superfine fly ash, silica fume and calcium sulfate whiskers; the coagulant comprises alumina clinker powder, calcium hydroxide, lithium carbonate and aluminum hydroxide; the modifier comprises a shrinkage reducing agent, a thickening agent, a water reducing agent and a retarder. The composite grouting material has the advantages of being good in pumpability, short in gelation time, free of plastic shrinkage, high in early strength, good in volume stability, high in durability, appropriate in price, environmentally friendly, free of toxicity and the like, and the requirement for rapid grouting maintenance is met in the subway operation window period.

The invention discloses coating type preformed brazing filler metal and a preparation method and application thereof, and belongs to the technical field of brazing, the coating type preformed brazing filler metal comprises brazing filler metal and brazing flux wrapping the periphery of the brazing filler metal, the brazing filler metal comprises aluminum-silicon alloy, and the brazing flux comprises fluoroaluminate; the mass ratio of the aluminum-silicon alloy to the fluoroaluminate is (75-96): (4-25). According to the method, the outer surface of the aluminum-silicon alloy is coated with the fluoroaluminate, the brazing flux can effectively remove an oxidation film on the surface of brazing filler metal and an oxidation film on a welding interface, the welding quality is improved, and then the product yield is improved.

The invention provides a sintered hollow batten for buildings and a preparation method, and belongs to the technical field of novel wall materials, the sintered hollow batten for buildings comprises the following raw materials: high-calcium fly ash, construction waste recycled aggregate, clay, sulphoaluminate cement, a foaming agent, reinforced fibers and an additive; wherein the particle size of the construction waste recycled aggregate is 0.5-5mm, and the construction waste recycled aggregate is subjected to plasma activation treatment; a nano TiO2 photocatalytic coating is loaded on the surface of the construction waste recycled aggregate; the reinforced fibers are composite fibers of basalt fibers and polypropylene fibers, and the mass ratio of the basalt fibers to the polypropylene fibers is (1: 1)-(1: 2). According to the sintered hollow batten for the building, the building waste recycled aggregate subjected to plasma activation treatment is adopted, and the nano titanium dioxide photocatalytic coating is loaded, so that the bonding strength of the aggregate is greatly improved, and the hollow batten is endowed with the function of degrading pollutants such as formaldehyde.

The invention discloses quick-hardening cement mortar and an application method thereof, and relates to the technical field of building materials, the quick-hardening cement mortar is composed of the following components: quick-hardening sulphoaluminate cement, common Portland cement, aggregate, an additive and a fiber composition; the fiber composition comprises galvanized steel fibers and polymer fibers, and the polymer fibers comprise PVA fibers; a film layer modified by a silane coupling agent is formed on the surfaces of the galvanized steel fiber and the polymer fiber, and the silane coupling agent is selected from at least one of aminopropyltriethoxysilane and diamino type functional group silane. The galvanized steel fibers and the polymer fibers are adopted in the cement mortar, the polymer fibers generate pressure stress in a cement block by utilizing an environment that the cement is severely hydrated in a short time, and the polymer fibers and the galvanized steel fibers generate a synergistic effect, so that the overall anti-dry-crack effect of the cement block is achieved; through a silane coupling agent surface modification scheme, the anti-cracking effect is enhanced, and the effect of common long fibers is achieved through short fibers.

The microbial remediation ceramsite comprises microorganisms, nutrient substances, modified porous slow-release Ca < 2 + > ceramsite and a cement-based protective shell, the microorganisms and the nutrient substances are loaded in the modified porous slow-release Ca < 2 + > ceramsite, and the cement-based protective shell wraps the outer surface of the modified porous slow-release Ca < 2 + > ceramsite. The surface of the ceramsite is modified by an aggregation-crosslinking method, and the modified microbial ceramsite carrier has higher microbial loading capacity and better stability under the dual actions of physical adsorption and valence bond combination, so that the repair effect of the ceramsite on cracks is further ensured; the cement-based protective shell adopts epoxy resin, so that the cylinder compressive strength of the ceramsite is improved, and microorganisms and nutrient substances are protected from being damaged by a high-alkalinity environment; the cement-based mixed powder is selected to enhance the interface adhesive force between the ceramsite and cement concrete, the sulphoaluminate cement in the mixed powder ensures the strength of the ceramsite in the early stage, and the fly ash, the silica fume, the nano-silica and other materials enable the later strength of the ceramsite to be continuously increased.

The present invention relates to a flexible iron aluminate cement-based supercapacitor and a preparation method thereof. The flexible iron aluminate cement-based supercapacitor is assembled with rGO / Ni as the positive electrode, rGO@α-Fe2O3 spindle / Ni as the negative electrode, and polyacrylamide-cement-emulsion-latex powder-water-KOH as the flexible cement-based solid electrolyte. Compared with the prior art, the flexible energy storage cement-based material, as a new type of building material integrating structure / function, realizes the integration of flexible lightweight design and functional technology. Its flexible characteristics can closely fit complex-shaped buildings and have good adaptability to special-shaped curved building structures. At the same time, a non-destructive construction process can also be adopted, and the energy storage function can be imparted to the existing structure by an external pasting method, so that the energy storage function can be imparted without structural reconstruction.

The invention discloses multi-scale toughened concrete and a preparation method thereof, and belongs to the technical field of high leakage, and the multi-scale toughened concrete comprises aluminoferrite cement, a low-shrinkage auxiliary cementing material, a water reducing agent, multi-scale composite fibers, a shrinkage compensation agent, fine aggregate, coarse aggregate and water. A traditional toughening mode is broken through, a physical-chemical composite connection interface is established through a magnetron sputtering metal gradient coating of crude fibers and a laser-induced dendritic crystal structure, a strain hysteresis effect is triggered under an impact load, impact energy is converted into interface phase change energy, and a high-efficiency energy dissipation channel is formed; an amino functional group and free radical cross-linked network is introduced into the fine fibers, and the fibers are endowed with microcosmic dynamic enhancement capability in combination with directional arrangement of the carbon nanotubes, so that the concrete forms cooperative interaction between macroscopic crack bridging and microcosmic crack inhibition, the crack resistance under complex stress is remarkably improved, and microcrack propagation is effectively inhibited.

The invention relates to the technical field of expansive soil treatment, and particularly discloses an expansive soil rapid hardening material as well as a preparation method and application thereof. The invention discloses an expansive type rapid hardening material for soil. The expansive type rapid hardening material is prepared from the following components: high belite sulphoaluminate cement clinker, ordinary Portland cement, gypsum, solid waste high-activity superfine powder, a nano crystal nucleus induction activating agent, a nano modified complexing agent and a modified early strength agent, the nano crystal nucleus induction activating agent is prepared from nano Al2O3, sodium dodecyl benzene sulfonate, NaOH and Na2SiO3; the nano modified complexing agent is prepared from nano SiO2, lauryl sodium sulfate and silane; the modified early strength agent is prepared from modified graphene oxide, Na2SiO3 and water. According to the technical scheme, the solid waste can be recycled, the expansive soil treated by the hardening material can achieve the effects of high hour strength and good water stability, and the curing speed and the production efficiency are greatly improved.

The invention provides weather-resistant anti-freezing road concrete and a preparation method thereof, and belongs to the technical field of concrete. The concrete comprises the following components: sulphoaluminate cement, Portland cement, silica fume, fly ash, modified granite gravel coarse aggregate, medium sand fine aggregate, silica fume blended fiber, silica fume blended polyacrylonitrile fiber, a composite air entraining agent, a functional modifier, a composite antifreeze agent, pre-absorbent zeolite powder and the like. The preparation method comprises the following steps: modifying granite macadam with Al (H2PO4) 3, SiO2 and methoxypolyethylene glycol triethoxysilane, and modifying with a lithium silicate aqueous solution to obtain the modified granite macadam coarse aggregate. The composite air entraining agent comprises a JRY-Q air entraining agent and sodium alpha-olefin sulfonate. The functional modifier is prepared from gas phase method spherical nano silicon dioxide and nano alpha-Al2O3. The composite antifreeze agent comprises ethylene glycol butyl ether acetate and modified calcium carbonate. The modified calcium carbonate is obtained by sequentially modifying nano calcium carbonate with calcium chloride, a KH-550 silane coupling agent and stearic acid.

The invention discloses a mine filling cementing material and a preparation method thereof. The mine filling cementing material comprises the following components in percentage by mass: 3-8 wt% of high belite sulphoaluminate cement clinker; 1-3 wt% of high free calcium silicate cement clinker; 74 to 85 wt% of granulated blast furnace slag powder or granulated blast furnace slag; and 10 to 18 wt% of gypsum. Compared with other paste filling materials with the same strength, the cementing material solves the problems that in the prior art, a mine filling cementing material is poor in excitation effect and poor in mechanical property, so that the mine filling effect is affected, and the cost is high due to the fact that the using amount of the cementing material is large, and meanwhile the using proportion is reduced; and the use of mine backfill engineering is fully met.

The invention discloses a high-early-strength quick-hardening cement-based material for a low-temperature environment and a preparation method of the high-early-strength quick-hardening cement-based material. The cement-based material is prepared from the following components in parts by weight: 400 parts of sulphate aluminium cement, 100 parts of coal ash, 150 parts of water, 0.05-10 parts of lithium carbonate and 2 parts of a water reducing agent. According to the invention, high-purity lithium carbonate (gt; the early-stage hydration activity of the sulphoaluminate cement in a low-temperature (-5 DEG C) environment is remarkably improved, and good workability and compactness of slurry are ensured by combining an optimized mixing ratio and a polycarboxylic acid high-efficiency water reducing agent, so that a foundation is laid for early-stage strength development; the preparation method of the cement-based material provided by the invention is simple to operate, does not need complex pretreatment, and does not affect the construction period. Meanwhile, the industrial by-product fly ash is utilized, the resource utilization trend is met, energy is remarkably saved through the simplified maintenance process, and carbon emission is reduced.

The invention discloses a high-performance composite material for repairing high plateau airport pavement cracks, which is a mixture composed of the following raw materials in parts by weight: 750 to 1000 parts of sulphoaluminate cement, 0 to 10 parts of AEA expanding agent, 100 to 150 parts of silica fume, 100 to 150 parts of slag, 100 to 300 parts of fly ash, 200 to 400 parts of ceramic microbead, 100 to 120 parts of steel fiber, 180 to 240 parts of water, and 0 to 15 parts of defoaming agent. 0-15 parts of an early strength agent, 300-600 parts of quartz sand, 0-10 parts of polyester fibers, 0-10 parts of nano cellulose and 15-30 parts of a high-efficiency water reducing agent. According to the high-performance composite material for repairing the pavement cracks of the high plateau airport and the preparation method, the high-performance composite material has ultrahigh mechanical properties, high durability and good construction performance, and the problems that an existing repairing material is poor in durability, poor in frost resistance and high in maintenance frequency are solved.

The invention relates to the technical field of concrete materials, and discloses rapidly-reinforced high-performance sprayed concrete for an existing tunnel lining and a preparation method of the rapidly-reinforced high-performance sprayed concrete. The sprayed concrete is prepared from the following raw materials in parts by weight: 300 to 350 parts of low-calcium high belite sulphoaluminate cement, 80 to 100 parts of superfine slag powder, 3 to 8 parts of a trigger type activating agent, 5 to 15 parts of slow-release particles, 2 to 5 parts of nanogel, 800 to 900 parts of fine aggregate, 800 to 900 parts of coarse aggregate, 30 to 50 parts of copper-plated steel fiber, 0.8 to 1.2 parts of polypropylene fiber, 30 to 40 parts of a viscosity-adjusting accelerator, 10 to 20 parts of a water reducing agent and 160 to 180 parts of water. The sprayed concrete is high in compressive strength and good in durability, the double threats of chemical corrosion and chloride ion permeation / steel bar corrosion are cooperatively solved, and the requirement for rapid reinforcement of tunnels and underground engineering is met.

The invention discloses a high belite iron aluminate cement clinker, which is prepared from the following raw materials in parts by weight: 39 to 73 parts of carbide slag, 8 to 37 parts of low-grade bauxite, 10 to 16 parts of ardealite, 1 to 31 parts of fly ash and 3 to 9 parts of steel slag. According to the cement clinker, the resource utilization rate of industrial solid waste in cement preparation can be remarkably increased, and dependence on natural raw materials and high-grade raw materials is reduced; impurities in various solid wastes can be used as in-situ mineralizing agents and activating agents, and on the basis of realizing high-added-value resource utilization of various industrial solid wastes and low-grade bauxite, efficient synthesis of target minerals at a relatively low temperature is promoted; and gradient temperature control calcination and gradient cooling processes are further combined, so that sufficient crystallization and development of a target mineral phase can be effectively promoted, a clinker microstructure is optimized, excellent early strength and continuously increased later strength of the cement are ensured, and the common problems of strength shrinkage and the like of the traditional solid waste-based cement can be effectively avoided.

The invention belongs to the technical field of bottom plate mudstone treatment, and particularly relates to a rapid reinforcing material and method for bottom plate mudstone. The rapid reinforcing material for the bottom plate mudstone comprises the following components in parts by mass: a material A: 40-60 parts of sulphoaluminate cement, 15-40 parts of Portland cement and 1-2 parts of a naphthalene water reducer, and further comprises an initiator, a cross-linking agent and a redox agent; and a material B: 80-100 parts of gypsum, 10-30 parts of acrylamide and 2-4 parts of an aluminate coupling agent. According to the rapid reinforcing material for the bottom plate mudstone, the on-site argillization bottom plate can be hardened on site, a bottom plate hardening layer meeting the bearing condition is formed, the labor cost and the time cost caused by cleaning of bottom plate argillization substances are reduced, the passing smoothness is guaranteed, the project progress is accelerated, and the project benefits and the economic benefits are improved.

The invention discloses a high-crack-resistance self-repairing sprayed concrete composition as well as a preparation method and application thereof. The composition comprises the following components in percentage by mass: 40%-50% of cement, 50%-60% of aggregate, 1%-2% of composite microfibers, 3%-5% of modified polymer emulsion, 1%-2% of an additive, 0.5%-1.5% of a nano reinforced phase and 2%-3% of a self-repairing microcapsule, and also comprises an anti-corrosion additive. The composite microfiber is a mixture of polypropylene and basalt microfiber, and the nano reinforced phase is a compound system of nano calcium carbonate and silicon dioxide. The preparation method comprises the steps of aggregate pretreatment, dry material mixing, wet material preparation, microcapsule introduction and injection molding, the aggregate is pretreated through a silane coupling agent, the cement is formed by compounding ordinary Portland cement and aluminate cement, and the modified polymer emulsion is modified through a siloxane monomer. According to the composition, through the synergistic effect of the composite microfibers, the self-repairing microcapsules and the nano reinforced phase, the crack resistance and the self-repairing capacity are improved, the composition is particularly suitable for a corrosive environment, and the service life of a structure can be prolonged.

The invention relates to the technical field of cement-based material preparation, and particularly discloses a preparation method of an anti-carbonization all-solid waste slag-sulphoaluminate cementing material, which comprises the following steps: (1) putting a wet material formed by lead-zinc tailing powder and water into a reaction container, sealing, and heating; and mixing the obtained product with iron powder and / or iron oxide powder and water, stirring, separating out a solid product, and heating and drying in an air atmosphere to obtain the anti-carbonization tailing powder. And (2) mixing the anti-carbonization tailing powder with sulphoaluminate cement powder, and carrying out mechanical grinding treatment to obtain the modified sulphoaluminate cement. And (3) uniformly mixing blast furnace slag powder, the modified sulphoaluminate cement, fly ash, waste gypsum powder, an alkali activator, gypsum and a water reducing agent serving as raw materials to obtain the cementing material. According to the invention, the resource utilization of industrial solid waste is realized, the carbonization resistance of the cementing material is effectively improved, and the service durability of the cementing material is improved.

The invention belongs to the technical field of building materials, and discloses an early-strength polymer modified cement-based grouting material and a preparation method thereof. The grouting material disclosed by the invention is prepared from the following raw materials in parts by weight: 100 to 115 parts of a cementing material, 100 to 115 parts of river sand, 20 to 23 parts of water, 2 to 2.5 parts of a water reducing agent, 0.02 to 0.04 part of an expanding agent, 0.22 to 1.76 parts of an acrylic emulsion and 0.04 to 0.08 part of a de-foaming agent, wherein the cementing material comprises 71-81 parts of Portland cement, 9-19 parts of sulphoaluminate cement, 6-8 parts of silica fume and 11-15 parts of fly ash microbeads. The early-strength, high-strength and high-fluidity cement-based grouting material can be obtained under the conventional curing condition by adopting the combined action of the acrylic emulsion polymer, the Portland cement and the sulphoaluminate cement, the plastic expanding agent, the polycarboxylate superplasticizer and the defoaming agent, and has good economic benefits and practical values.