69 results about "Alkali activated slag" patented technology

The invention discloses a cementing material for a solid waste-based road of a coal-fired power plant and a preparation method of the cementing material. The cementing material mainly comprises a cementing component, an alkali-activated component and a reinforcing component, the gelling component is a mixture of coal-fired power plant fly ash and furnace slag; the alkali-activated component is a mixture of alkali residues, red mud, blast furnace slag and coal-fired power plant desulfurized gypsum; the reinforcing component is rice hull ash or peanut hull ash. The mass ratio of the gelling component to the alkali-activated component is (4 / 1)-(10 / 1); and the addition amount of the reinforcing component is 1-3% of that of the main body material. The coal-fired power plant solid waste fly ash, the furnace slag and the desulfurized gypsum are used as main bodies, a small amount of other industrial solid waste is added, and the cementing material belongs to a full-solid-waste low-carbon cementing material and can be applied to a road base, a subbase or a base layer. The invention has the characteristics of low carbon emission, high solid waste consumption, simple production process and strong pavement performance, and in addition, the invention has a good stabilization effect on the problem that part of solid waste heavy metals and sulfate ions in a coal-fired power plant exceed the standard.

The invention relates to the field of resource recycling, and discloses an iron slag ash and waste soil composite curing agent as well as a preparation method and application thereof. The composite curing agent comprises the following components in parts by weight: 30-50 parts of iron slag ash; 20 to 40 parts of waste soil; 10-20 parts of industrial alkaline residues; 5-10 parts of a functional auxiliary agent; 3-5 parts of a curing synergist; the curing synergist is composed of an inner core and a coating layer, the inner core material comprises a porous carrier and an exciting agent, and the film forming material of the coating layer is one or more of stearic acid, paraffin and polyethylene wax; the weight ratio of the core material to the coating layer material is (8-9): 1. According to the composite curing agent, resource utilization of waste is achieved, the material cost is remarkably reduced, and the composite curing agent is particularly suitable for flow-state backfilling, light filling and sludge in-situ curing and has remarkable environmental protection and economic benefits.

The invention discloses a method for increasing the recovery rate of lead fire refining alkaline residues. The temperature of the roasting furnace is set to be 580-650 DEG C, after the actual temperature reaches the set temperature, the refined alkaline residues are conveyed into the roasting furnace, the rotating speed of the roasting furnace is controlled to be 0.5-1 circle / min, the amount of blown air is 2-5 m < 3 > / min, the materials are subjected to oxidizing roasting in the roasting furnace for 30-60 min, the temperature is reduced to 30-50 DEG C, and roasted sand materials are obtained; detecting the roasted product material to obtain the content of the S element; the roasted sand materials and corresponding auxiliary materials are put into a smelting furnace in batches, the temperature in the furnace is controlled to be 900-1100 DEG C, the smelting time is 2-3 h, and produced lead bullion is discharged after the smelting time is up; the auxiliary materials are prepared according to the input amount of a single-batch roasted product material and the content of the S element. The recovery rate of lead, tin, antimony and copper in the pyrorefining alkaline residues can be effectively increased, and the cost of smelting auxiliary materials is reduced.

The invention discloses a mixing design-based ratio optimization method for a multi-source solid waste cementing material containing alkaline residues, which is used for optimizing to obtain an optimal ratio of five solid waste components according to a preset cementing material performance target, the alkaline residues are used as an alkaline excitation component, a D optimal mixing design method is adopted to determine a test point, a three-order normative polynomial model is established, and the optimal ratio of the five solid waste components is obtained. Setting constraint conditions of each solid waste component, testing the three-day compressive strength and 28-day compressive strength of the neat paste for each test point, obtaining a first fitting model based on compressive strength response and a second fitting model based on response according to test data, and according to a preset performance target, the first fitting model and the second fitting model, calculating the compressive strength of the neat paste according to the first fitting model and the second fitting model. Solving through a multi-objective optimization algorithm to obtain an optimal proportion of five solid waste components; according to the method, the problems of low efficiency and high cost of a traditional trial and error method are solved, and scientization and standardization of the proportion design of the multi-source solid waste cementing material are realized.

The invention provides homologous and isomeric alkaline residue-based fluidized stabilized soil as well as a preparation method and application thereof, and belongs to the technical field of solid waste resource utilization. The alkali residue-based curing agent is prepared from the alkali residue after filter pressing, the slag, the desulfurized fly ash, the fly ash and the cement. According to the method, high-water-content pasty raw alkali residues, alkali residues obtained after desalination and salt fixation and furnace slag are used as the alkali residue-based matrix soil. The homologous and isomeric alkaline residues are different in structure and form, so that the homologous and isomeric alkaline residues can be used as matrix soil on one hand, and can be used for preparing the curing agent on the other hand, and physical and chemical reaction and particle size matching among different components are promoted and improved, so that the mechanical property of the homologous and isomeric alkaline residue-based fluid-state solidified soil is improved. By adding a proper amount of water and water reducing agent, the fluidity of the homologous isomeric alkaline residue-based fluid-state solidified soil can be adjusted, the construction requirement can be met, and excellent dense pouring performance is achieved.

The application discloses high-performance desert sand foam concrete and a preparation method thereof. The concrete comprises the following components in parts by weight: 70 parts of Portland cement, 30 parts of fly ash, 20-100 parts of desert sand, 25-35 parts of salt water, 0.2-0.5 parts of a foaming agent, 5-12 parts of a composite activator, 5-15 parts of alkali-activated metakaolin composite microbeads and 0.5-2 parts of a roughened PET polymer fiber. The composite activator is composed of calcined phosphogypsum, alkali residue, nano silicon dioxide, silica fume and 5% mass concentration polyvinyl alcohol in a weight ratio of (40-50):(30-40):(10-15):(5-10):(10-15). The alkali-activated metakaolin composite microbeads are composed of fly ash floating beads, metakaolin, water glass, sodium hydroxide and deionized water in a weight ratio of 100:(20-30):(15-25):(3-5):(20-30). The application is particularly suitable for a buffer pressure relief filling layer between primary support and secondary lining in a tunnel engineering, thereby effectively reducing high ground stress and stratum load acting on a tunnel lining structure.

The invention relates to a curing agent for high-flow-state solidified soil applied to underwater structure scour pit protection, the high-flow-state solidified soil and application of the high-flow-state solidified soil, and relates to the field of hydraulic engineering materials. The curing agent comprises a powder curing agent and a liquid curing agent, and the mass ratio of the powder curing agent to the liquid curing agent is (5-15): (0.1-0.6); the powder curing agent comprises sulphoaluminate cement, superfine slag powder, fly ash, gypsum powder, plant ash, silica powder, alkaline residues, hydroxypropyl methyl cellulose, polyvinyl alcohol, an exciting agent and a water reducing agent; the liquid curing agent comprises deionized water, sodium methyl silicate, potassium methyl silicate and polydimethylsiloxane. The raw materials of the high-flow-state solidified soil comprise slurry, fine sand and a curing agent. The application refers to the application in underwater structure scour pit protection. The construction method has the advantages in the aspects of underwater construction, scouring resistance, compact filling, bearing and the like, and the constructability, adaptability, durability and safety of the solidified soil in the aspect of underwater structure protection are improved.

The invention discloses a seawater-mixed high-pressure salt corrosion-resistant all-solid-waste anti-seepage grouting material and a preparation method thereof. The high-pressure salt corrosion-resistant all-solid-waste anti-seepage grouting material can adapt to a high-salt and high-pressure environment. In addition, the adopted raw materials are almost zero in cost, solid raw materials are all taken from solid wastes, and solid waste recycling is achieved; strong alkaline leachate of an alkaline residue field is used as an alkali activator, and waste is treated by waste; finally, seawater is adopted for mixing according to local conditions, so that fresh water resources are greatly saved, and the anti-seepage performance can be improved.

The invention relates to the technical field of building material admixtures, and particularly discloses nano calcium carbonate, an alkaline residue-based solid waste cementing material early strength agent, a preparation method and application. The preparation method of the nano calcium carbonate comprises the following steps: carrying out reaction on alkaline residues and a chlorine-containing solution, and carrying out solid-liquid separation to obtain filtrate; and adding an alcohol solvent into the filtrate, introducing carbon dioxide and nitrogen to carry out carbonization reaction, and crystallizing to obtain the nano calcium carbonate. The growth process of the nano calcium carbonate crystals is controlled by controlling the carbonization reaction conditions and the flow of nitrogen and carbon dioxide, the method has the advantage of being easy to operate, and the prepared nano calcium carbonate is applied to the alkaline residue-based solid waste cementing material early strength agent; the strength, the initial setting time and the final setting time of the solid waste cementing material at each age can be improved, and a new idea is provided for preparation of the alkaline residue-based solid waste cementing material early strength agent.

The application provides a homologous heterogeneous alkali residue-based fluid-state solidified soil and a preparation method and application thereof, and belongs to the technical field of solid waste resource utilization. The alkali residue-based solidified agent is prepared by using the pressure-filtered alkali residue, slag, desulfurization ash, fly ash and cement. The high-water-content paste-shaped original alkali residue, desalted solid salt alkali residue and slag are used as the alkali residue-based matrix soil. The homologous heterogeneous alkali residue has different structures and forms, which can be used as the matrix soil and can be used to prepare the solidified agent, promotes and improves the physicochemical reaction and particle size matching among different components, and thus improves the mechanical properties of the homologous heterogeneous alkali residue-based fluid-state solidified soil. The flowability of the homologous heterogeneous alkali residue-based fluid-state solidified soil can be adjusted by adding a proper amount of water and water reducing agent, the construction demand can be met, and the homologous heterogeneous alkali residue-based fluid-state solidified soil has excellent compacting performance.

This invention discloses a high-pressure salt-erosion resistant solid waste seepage-proof grouting material mixed with seawater and its preparation method. This high-pressure salt-erosion resistant solid waste seepage-proof grouting material can adapt to high-salt and high-pressure environments. Furthermore, the raw materials used are almost "zero-cost": the solid raw materials are all taken from solid waste, realizing the resource utilization of solid waste; the strongly alkaline leachate from the alkali slag field is used as an alkali activator, treating waste with waste; finally, seawater is used for mixing according to local conditions, which not only saves a large amount of freshwater resources but also improves seepage-proof performance.

The application belongs to the technical field of reusing industrial solid wastes, and discloses a waste-reusing low-carbon cementing material and a preparation and use method thereof. The cementing material comprises the following components in mass fraction: 40-97 parts of steel slag, 0-50 parts of mineral slag, 0-10 parts of alkali slag, 0-6 parts of lithium slag, 3-15 parts of a solid reinforcing agent, and 0-0.2 parts of a liquid modifier. The solid reinforcing agent comprises the following components in mass fraction: 0-30 parts of carbide slag, 0-30 parts of sodium carbonate, and 10-80 parts of layer silicon. The liquid modifier comprises the following components in mass fraction: 5-20 parts of acrylamide, 5-20 parts of N-methyl diethanolamine, and 60-90 parts of water. The cementing material has relatively optimal hydration and hardening performance, and improves the resource utilization of steel slag.

The application discloses a kind of based on mix design's containing alkali residue multi-source solid waste cementing material proportioning optimization method, for obtaining the best five kinds of solid waste component proportion according to preset cementing material performance target, wherein alkali residue is used as alkaline excitation component, determines test point using D optimal mix design method, establishes three-order standard polynomial model, sets the constraint condition of each solid waste component, carries out net paste 3 days compressive strength and 28 days compressive strength test to each test point, obtains the first fitting model based on compressive strength response and the second fitting model based on response according to test data, according to preset performance target, according to the first fitting model and the second fitting model, the optimal five kinds of solid waste component proportion are obtained by solving using multi-objective optimization algorithm;The method solves the problems of low efficiency and high cost of traditional trial-and-error method, realizes the scientization and standardization of multi-source solid waste cementing material proportioning design.

The present application relates to solid waste resource utilization technical field, specifically to a kind of three-source solid waste flow state solidified soil and preparation method thereof, by weight fraction, the three-source solid waste flow state solidified soil includes the following components: alkali residue slurry 60~70 parts, tertiary fly ash 10~20 parts, waste mud residue 3~10 parts, cement 10~20 parts and water reducing agent.According to application scene requirement, select control parameter, carry out scheme design, establish prediction model, realize performance prediction, and carry out mix proportion verification, response application scene requirement, form closed loop;And the correlation between microstructure and macro strength is established.The three-source solid waste flow state solidified soil provided by the present application realizes the high-mixing use of solid waste resources, and the solid waste content can reach 80~90%, the fluidity and compressive strength thereof are 160~420mm and 0.47~1.10MPa respectively, which are controllable and adjustable, and can be applied to different application scenarios.

This invention relates to a process and system for the resource-based treatment of refinery alkali slag. The process includes: (1) firstly, the alkali slag enters the desulfurization unit and is desulfurized using copper oxide as a precipitant; (2) after desulfurization, the alkali slag enters the neutralization unit and is neutralized using CO2 gas as a neutralizing agent; (3) after neutralization, the alkali slag enters the refining unit and is oxidized using ozone and hydrogen peroxide as oxidants; (4) after refining, the alkali slag enters the alkali recovery unit for causticization reaction to recover sodium hydroxide and calcium carbonate; (5) the waste gas generated by the desulfurization unit, neutralization unit, refining unit, and alkali recovery unit enters the tail gas treatment unit, is absorbed by an absorbent, and is discharged into the atmosphere. The saturated absorbent is sent back to the desulfurization unit for recycling treatment together with the alkali slag. The alkali slag resource-based treatment process of this invention has wide applicability, high organic matter degradation rate, high resource utilization degree, and can achieve zero discharge of waste liquid.

The utility model discloses a lye tank for aluminum alloy low-power erosion, belongs to the technical field of aluminum alloy erosion, and solves the problems that an existing aluminum alloy low-power erosion lye tank is poor in heating effect and cleaning is difficult due to the fact that alkali residues adhere to the inner wall of the lye tank. The inner groove plates of the inner groove are fixedly connected to the inner side of the top of the outer groove, the four inner groove plates incline inwards and downwards, every two opposite inner groove plates are in a V shape, the bottom of the inner groove is suspended and not connected with the outer groove, lining plates matched with the inner groove plates are clamped on the inner groove plates, a waste discharge hole is formed in the lower portion of one inner groove plate and connected with a waste discharge pipe, the waste discharge pipe extends out of the outer groove, and the waste discharge pipe is connected with the waste discharge hole. A water injection hole and a water outlet hole are formed in the outer tank, a rectangular box body is arranged at the bottom of the outer tank, and a heating pipe is arranged in the rectangular box body. According to the utility model, the problem that alkaline residues are firmly adhered and are difficult to clean is solved, the concentration of alkaline liquor is effectively ensured, the standardization and accuracy of tests in any season are ensured, and the safety is also remarkably improved.

The present application belongs to the field of building materials and solid waste resource utilization, and relates to a red mud-based cementing material and a preparation method based on efficient drying-component homogenization-activity promotion. A filter aid is added to the red mud for sedimentation, and then pressure filtration is performed to obtain a solid material with a moisture content of 14-16%, which is then dried to a moisture content of less than 4%, and finally ground to obtain the red mud-based cementing material. The filter aid comprises the following raw materials: 10-30 parts of polyaluminum chloride, 5-15 parts of polyaluminum sulfate, 1000-1200 parts of blast furnace slag or fly ash, 700-900 parts of steel slag, 400-600 parts of carbide slag or alkali slag, and 300-400 parts of desulfurization gypsum or phosphogypsum or fluorogypsum. The present application not only improves the dewatering efficiency of the red mud, but also simplifies the preparation process of the red mud-based cementing material by preparing the red mud-based cementing material in one step, and the prepared red mud-based cementing material has the advantages of high mechanical strength, high durability and erosion resistance.

The invention discloses a water-resistant all-solid-waste ardealite road building material and a preparation method thereof. A production raw material formula comprises the following components in parts by mass: 100 parts of ardealite, 3-18 parts of functional solid waste, 0.06-0.15 part of a dispersing agent and 0.12-0.28 part of an adsorbent, the functional solid waste is prepared from the following components in parts by weight: 78 parts of blast furnace mineral powder, 0.1-12 parts of waste concrete powder, 3-8 parts of alkaline residue powder and 5-16 parts of magnesium residue powder; the dispersing agent comprises potassium sodium tartrate; the adsorbent is prepared from polyaluminum sulfate and activated aluminum oxide according to the mass ratio of 1: (0.8-1.3). The method has the advantages that 1) the water resistance of the phosphogypsum road building material is obviously improved; the phosphogypsum road building material has the advantages of simple preparation process, realization of curing and sealing of phosphogypsum pollutants, realization of dual effects of physical sealing and chemical bonding, safe and reliable environmental protection performance, substantial reduction of carbon emission and material cost, and solving of the contradiction between a high phosphogypsum use amount and a low comprehensive cost performance of a large-dosage phosphogypsum road building material.

This invention discloses a multi-source solid waste-based cementitious material and its preparation method, relating to the technical field of cementitious materials for solidified organic soft soil. The raw materials for the cementitious material include: carbide slag, desulfurization ash, yellow phosphorus slag, highly active and stable steel slag, modified red mud, alkaline slag, desulfurized gypsum, slag, and calcium sulfoaluminate; the highly active and stable steel slag is obtained from liquid steel slag after preliminary stabilization treatment and activation; the steel slag activation is achieved by preparing stabilized steel slag, modified ettringite microparticles, aluminum sulfate, polycarboxylate superplasticizer, hexadecyltriethylammonium bromide, and potassium hydroxide; the modified red mud is prepared from red mud, magnesium hydroxide, N-methyldiethanolamine, desulfurization ash, calcium oxide, and ferric chloride solution; the modified ettringite microparticles are modified with polyvinyl alcohol and N-β-aminoethyl-γ-aminopropyltrimethoxysilane. The multi-source solid waste-based cementitious material of this invention effectively improves the compressive strength and water stability coefficient of solidified organic soft soil.

The invention provides a road alkali residue engineering soil curing agent and an alkali residue engineering soil material cured by the curing agent, and belongs to the technical field of comprehensive utilization of alkali residue engineering soil. The curing agent provided by the invention comprises a gelling component and an alkali excitation component, the curing agent is used for curing the alkaline residue engineering soil, the mechanical strength of the alkaline residue engineering soil is remarkably improved, and the leaching concentration of chloride ions and sulfate ions is reduced. The curing agent can effectively improve the pavement performance and environmental safety performance of the alkaline residue engineering soil, and solves the problem that the alkaline residue engineering soil is difficult to be used as a road filler.

The invention discloses high-crack-resistance fly ash-based all-solid-waste foam concrete and a preparation method thereof, and belongs to the technical field of solid waste resource utilization and building materials. The all-solid waste foam concrete is prepared from pretreated fly ash, S95-grade slag powder, semi-hydrated phosphogypsum, an organic-inorganic composite anti-cracking agent, a foaming component sodium peroxide and mixing water. The crack resistance and the mechanical property of the material are remarkably improved through the processes of synergistic activation pretreatment of the fly ash and the alkaline residues, in-situ synthesis of the organic-inorganic composite anti-cracking agent and the like. The bleeding rate of the obtained product is lower than 5%, the 28-day compressive strength is larger than 0.5 MPa, the crack area is smaller than 100 mu m < 2 >, all the raw materials are industrial solid waste, and high-value utilization of the solid waste is achieved. The composite material has the characteristics of low energy consumption, high crack resistance and environmental protection, and is suitable for building thermal insulation and filling engineering.

The present application relates to the field of solidifying agent and solidifying soil stirring technology, multi-source waste mud solidifying agent and mobile temperature control stirring device, the multi-source waste mud solidifying agent includes industrial solid waste, cement-based material, fiber, composite activator, active material and auxiliary agent. Industrial solid waste is made by mixing one or more of steel slag, fly ash, slag, desulfurization gypsum and alkali residue, the composite activator includes one or more combinations of sodium sulfate, sodium silicate, sodium hydroxide and calcium hydroxide. The mobile temperature control stirring device includes a mobile car, a soil stirring chamber, a solidified soil stirring chamber, a solidifying agent stirring chamber, a fiber treatment chamber, a temperature control water tank, a pumping pipeline and a PLC control system. The solidified soil in the application has the advantages of high strength, strong crack resistance and stable performance. The invented mixer is more fully stirred and has more complete functions, is mobile, covers all portable application scenarios, can mix different requirements of flow state solidified soil, and has the advantages of convenient construction and mobility.

The invention discloses a light-emitting geopolymer with low alkali damage and sunlight energy storage and a preparation method thereof.The geopolymer is prepared by taking industrial solid waste blast furnace slag and iron tailings as solid powder raw materials, doping green fluorescent powder and reacting through a composite alkali activator composed of alkaline white mud, sodium silicate and alkaline residue cement; the luminescent intensity and compressive strength of the geopolymer can be improved at the same time by utilizing the synergistic effect of the solid powder, the sodium silicate, the alkaline white mud and the alkaline residue cement, and the compound alkali activator can weaken the alkali quenching effect of the luminescent material in an alkali environment, so that the luminescent geopolymer can still keep higher brightness in the alkali environment, and the service life of the luminescent material is prolonged. And the light-emitting cement can be used as a substitute of light-emitting cement, so that the accident occurrence probability of a dark road can be reduced, the cost of raw materials can be greatly reduced, the light-emitting property of the geopolymer can be improved while the compressive strength of the geopolymer is ensured, and the light-emitting cement has economic benefits and environmental friendliness.

The application discloses a kind of anti-shrinkage alkali-activated cementitious material based on multiple solid wastes and a preparation method thereof, and relates to the technical field of cementitious material.The raw materials of the anti-shrinkage alkali-activated cementitious material include activated steel slag micro-powder, desulfurization ash, desulfurization gypsum, composite alkali activator, auxiliary anti-shrinkage agent and cement.The activated steel slag micro-powder is prepared by hot stewing, crushing, magnetic separation and grinding of steel slag.The composite alkali activator is prepared by compounding alkali residue, carbide slag and sodium silicate.The auxiliary anti-shrinkage agent is prepared by metakaolin and polyacrylonitrile fiber.The preparation method of the anti-shrinkage alkali-activated cementitious material includes the steps of preparing the composite alkali activator, pretreating polyacrylonitrile fiber, synthesizing the auxiliary anti-shrinkage agent, pretreating steel slag and preparing the anti-shrinkage alkali-activated cementitious material.The anti-shrinkage alkali-activated cementitious material prepared by the application has excellent anti-shrinkage performance, high compressive strength and flexural strength, and excellent impermeability.

The invention belongs to the technical field of goaf grouting and filling, and discloses an alkali residue and fly ash based grouting and filling material and a preparation method thereof, carbide slag and water glass are used for synergistically exciting an alkali residue and fly ash based cementing material, and gold tailing gravel is used for replacing natural aggregate. The grouting material comprises the following components in parts by weight: aggregate: 120-300 parts of gold tailing sand and 200-420 parts of gold tailing ore; a cementing material: 10-30 parts of alkaline residues and 70-90 parts of fly ash; an exciting agent: 18-26 parts of carbide slag, 10.5-14.4 parts of sodium silicate powder and 3.8-5.3 parts of alkali metal hydroxide; and 117 to 209 parts of water. According to the alkaline residue fly ash-based grouting filling material and the preparation method thereof provided by the invention, a novel grouting filling material is prepared by selecting various solid wastes, the flowing property of slurry and the strength of a filling body both meet the filling requirements of a goaf, and the material sources are wide, the cost is low, the energy consumption is low, and the preparation process is simple.

The invention discloses a heavy metal remover for landfill leachate as well as a preparation method and application of the heavy metal remover, and the preparation method comprises the following steps: (1) carrying out flotation on gasified ash to obtain refined carbon; mixing the refined carbon with calcium carbide alkaline residues, crushing, and screening to obtain a mixture; (2) roasting the mixture for 60 to 180 minutes at the temperature of 700 to 850 DEG C, so as to obtain an activated product; and (3) crushing and screening calcium carbide alkaline residues, and mixing the calcium carbide alkaline residues with the activated product. According to the method, two kinds of industrial waste residues which are difficult to treat are converted into high-value environment-friendly materials, on one hand, solid waste of coal chemical enterprises is recycled, and environmental pollution is reduced; on one hand, an activating agent does not need to be additionally added in the production process of the remover, and investment is reduced;

The invention discloses a masonry hole rapid layering repairing composite material and method based on solid waste, and belongs to the technical field of building material repairing and solid waste recycling. The composite material is composed of 10-30 parts of alpha-ethyl cyanoacrylate (ECA) and 1-30 parts of alkaline solid waste powder, such as combustion ash powder CAP and alkaline residue powder SRP. The repairing method comprises the steps that after holes are cleaned, a layering process is adopted, an alkaline powder layer with the thickness of 2-3 mm is firstly filled, then ECA is poured to infiltrate the holes and initiate second-level curing, and operation is cycled till the holes are filled. According to the invention, high alkalinity of industrial solid waste is utilized to initiate rapid polymerization of ECA, and the solid waste is used as a reinforcing filler; by optimizing the layering thickness, the technical problems of incomplete internal curing, concentrated heat release, generation of pores and layering and the like during large-volume repair are effectively solved, and ultra-rapid forming, high early strength, excellent interface bonding performance and overall compactness of the prosthesis are realized. The method is simple in process, green, economical, high in field adaptability and particularly suitable for rapid in-situ repair of cement-based materials and red brick masonry.

The invention belongs to the technical field of industrial solid waste resource utilization and building materials, and particularly discloses an all-solid waste cementing material and application of the all-solid waste cementing material in preparation of a high-performance cementitious body by consolidating molybdenum slag. The all-solid-waste cementing material provided by the invention does not need cement, almost all components are industrial wastes, the cost is extremely low, the molybdenum slag provides a silicon-aluminum matrix and a part of alkali library, the slag powder provides high activity, the carbide slag-alkali residue is subjected to'mild-continuous' excitation, and the gypsum provides sulfate, so that a basic cementing system is formed; meanwhile, an active silica-alumina regulator is added to accurately regulate and control the Si / Al ratio, hydration products containing iron C-S-H, hydrodradite and the like are generated, a naphthalene water reducer and a cellulose ether water-retaining agent are added, the cost is reduced, and the volume stability and homogeneity are improved. The all-solid waste cementing material can efficiently consolidate the molybdenum slag to form a high-strength and high-stability consolidated body, the unconfined compressive strength within 28 days reaches 3-25 MPa, and high-value utilization of bulk industrial waste is achieved.

This invention belongs to the technical field of industrial solid waste resource utilization and novel inorganic cementitious materials. It discloses an alkaline slag-based geopolymer and its preparation method, with the core being the synthesis and application of a special composite activator. The special composite activator uses industrial by-products as the main raw material and is synthesized through modification, compounding, and low-temperature calcination processes. This overcomes the technical defects of traditional activators, such as low activation efficiency, slow strength development of geopolymers, high brittleness, and high cost. It can efficiently activate the activity of silicon-aluminum components in alkaline slag, promoting the full progress of the geopolymerization reaction. The alkaline slag-based geopolymer of this invention uses alkaline slag as the main raw material (with a dosage of up to 60%-85%), supplemented with appropriate amounts of silicon-aluminum admixtures, a special composite activator, and a modifier. It is prepared through pretreatment, batching, stirring, molding, and curing steps. Its 28-day compressive strength can reach 40-85 MPa, and its flexural strength can reach 5-12 MPa. It also possesses excellent water resistance, corrosion resistance, and freeze resistance. Furthermore, the preparation process has low energy consumption and no harmful gas emissions, realizing the large-scale resource utilization of alkaline slag. This invention also discloses in detail the synthesis process of special composite activators, which is simple, highly controllable, and has low production costs. It is easy to scale up industrial production and solves the problems of imperfect and limited application of existing alkaline residue base polymer activation systems. It has environmental, economic and social benefits.

The invention provides high-fluidity solid waste-based solidified soil and a preparation method thereof, and belongs to the technical field of civil engineering. Based on a method for preparing the high-fluidity solid-waste-based solidified soil by using a grading mechanism as a main mechanism, an excitation mechanism as an auxiliary mechanism and a hydration mechanism as a background mechanism and adopting linkage synergy of the alkaline residues, the steel slag and the furnace slag and combining three forms of the alkaline residues, namely a solid state, a flow state and a mixed state, original-state utilization and high-doping utilization of the solid wastes are realized, and the doping amount of the dry solid wastes reaches 80-90%; a systematic construction method for applying the high-fluidity solid waste-based solidified soil to a foundation pit slope building and bottom protecting project is established, and standardized and large-scale construction of the foundation pit slope building and bottom protecting project of the foundation pit project is achieved. The high-fluidity solid waste-based solidified soil has high fluidity and high strength, can effectively fill various spaces, is suitable for various construction environments, and is high in construction speed and high in construction efficiency.