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Geopolymers are inorganic, typically ceramic, materials that form long-range, covalently bonded, non-crystalline (amorphous) networks. Obsidian (volcanic glass) fragments are a component of some geopolymer blends. Commercially produced geopolymers may be used for fire- and heat-resistant coatings and adhesives, medicinal applications, high-temperature ceramics, new binders for fire-resistant fiber composites, toxic and radioactive waste encapsulation and new cements for concrete. The properties and uses of geopolymers are being explored in many scientific and industrial disciplines: modern inorganic chemistry, physical chemistry, colloid chemistry, mineralogy, geology, and in other types of engineering process technologies. Geopolymers are part of polymer science, chemistry and technology that forms one of the major areas of materials science. Polymers are either organic material, i.e. carbon-based, or inorganic polymer, for example silicon-based. The organic polymers comprise the classes of natural polymers (rubber, cellulose), synthetic organic polymers (textile fibers, plastics, films, elastomers, etc.) and natural biopolymers (biology, medicine, pharmacy). Raw materials used in the synthesis of silicon-based polymers are mainly rock-forming minerals of geological origin, hence the name: geopolymer. Joseph Davidovits coined the term in 1978 and created the non profit French scientific institution (Association Loi 1901) Institut Géopolymère (Geopolymer Institute).
Electromagnetic wave attenuation performance optimization control method and system for iron tailing-based geopolymer
ActiveCN120430093AData processing applicationsCement productionSilicon oxideParticle-size distribution
The invention provides an iron tailing-based geopolymer electromagnetic wave attenuation performance optimization control method and system, and relates to the technical field of electromagnetic wave attenuation, and the method comprises the steps: 1, setting a synthesis condition parameter set of an iron tailing-based geopolymer in a simulation environment, comprising virtual matching of raw materials, particle size distribution, concentration gradient of an alkali activator and curing temperature-time coupling parameters, and a forming process is deduced through an amorphous phase topological configuration and a pore network evolution rule of aluminosilicate gel in a geopolymer microstructure; and step 2, constructing an interface reaction kinetics process based on the synthesis condition parameter set, and generating an enhanced interface digital mapping system with periodically arranged aluminum oxide and silicon oxide regular tetrahedrons through virtual iteration of mineral admixture ratio and forming process parameter boundary conditions. According to the method, a strengthened interface is constructed through simulation synthesis, a loss layer database is established, and microstructure regulation and control and multi-band electromagnetic wave efficient attenuation are achieved.
Owner:FUJIAN CHUANZHENG COMM COLLEGE
Sulfuric acid erosion resistant self-repairing geopolymer system and self-repairing method thereof
The invention discloses a sulfuric acid erosion resistant self-repairing geopolymer system and a self-repairing method thereof, and relates to the technical field of composite materials and artificial intelligence. At least one self-repairing unit optimized for sulfuric acid erosion embedded within the geopolymer matrix; the in-situ multipoint pH sensing network is integrated in the geopolymer matrix and is used for monitoring spatio-temporal evolution data of a pH field in a sulfuric acid erosion process in real time; the edge calculation module is used for identifying a preliminary erosion indication according to the received spatio-temporal evolution data of the pH field; and the central AI decision module is used for evaluating an erosion state and predicting a development trend by utilizing an AI model optimized aiming at sulfuric acid erosion according to the identified preliminary erosion indication and the pH field spatio-temporal evolution data, and generating an optimal repair strategy to control the self-repair unit to perform self-repair. According to the invention, intelligent, active and refined protection and life management of the geopolymer in the sulfuric acid erosion process can be realized.
Owner:QINGDAO UNIV OF TECH
Geopolymer-based non-intumescent building fireproof coating
The invention relates to a geopolymer-based non-expansive building fireproof coating, and belongs to the field of building materials. A geopolymer prepared from fly ash, granulated blast furnace slag, coal gangue, oil shale waste residues and sodium silicate water glass is used as a binder, and expanded perlite is used as a heat insulation filler to prepare the inorganic building fireproof coating. Meanwhile, tailings and basalt fibers are added, so that the contractibility and integrity of the geopolymer-based fireproof coating are improved. Compared with an organic fireproof coating, the environment-friendly fireproof coating has high environment friendliness in the production and preparation process and the use and action process in the case of a fire disaster. Compared with a traditional Portland cement-based fireproof coating, the fireproof coating has more excellent performance in the aspects of high temperature resistance, corrosion resistance and the like. According to the invention, the way of resource utilization of solid wastes is widened, and the building fireproof coating with excellent performance is provided.
Owner:JILIN INST OF ARCHITECTURE & TECH
Geopolymer preparation and optimization method and system based on machine learning
The invention provides a geopolymer preparation and optimization method and system based on machine learning. The method is applied to the technical field of material science and machine learning. The method comprises the following steps: acquiring geopolymer preparation experimental data and preprocessing the data; performing nonlinear regression modeling on the geopolymer performance based on four machine learning regression algorithms, and constructing a geopolymer performance prediction model; calculating and distributing weights according to the mean square error of each machine learning model on the verification set, and performing weighted fusion to obtain a performance prediction result; receiving target performance parameters input by a user and an initial raw material ratio range, performing performance prediction by using the trained geopolymer performance prediction model, and reversely searching an optimal ratio combination meeting target performance constraints through an optimization algorithm; and preparing a geopolymer according to the optimal ratio combination to prepare the coal gangue-slag-fly ash geopolymer grouting material. According to the method, the prediction precision and the model generalization ability are effectively improved, and intelligent recommendation and accurate performance prediction of the raw material ratio are realized.
Owner:GUIZHOU INST OF COAL SCI
Preparation method of geopolymer composite material based on modified fibers
The invention relates to a preparation method of a geopolymer composite material based on modified fiber, which comprises the following steps: S1, fiber pretreatment: the fiber is one of basalt fiber and polyformaldehyde fiber; s2, performing surface roughening treatment on the fibers through a polyvinyl alcohol modified impregnating compound to obtain roughened fibers; s3, the roughened fibers are subjected to surface functional modification treatment through a functional modified impregnating compound, and functional modified fibers are prepared; s4, uniformly mixing the powder and an expanding agent according to a mass ratio, and adding an alkali activator solution and the functional modified fibers to prepare a geopolymer gel material; s5, the geopolymer gel material is subjected to stirring, mold filling, steam curing forming, demolding and continuous curing, and the geopolymer composite material based on the modified fiber is obtained.According to the preparation method, the geopolymer composite material with high strength and excellent crack resistance and toughness is obtained through alkali excitation, and the problems that geopolymers are low in toughness and large in brittleness are effectively solved.
Owner:JILIN UNIVERSITY
Early-strength high-fluidity geopolymer grouting material and preparation method thereof
The invention belongs to the technical field of civil engineering materials, and provides an early-strength high-fluidity geopolymer grouting material and a preparation method thereof. The method comprises the following steps: firstly, carrying out heat treatment and chemical regulation on fly ash and granulated blast furnace slag to generate a pre-reaction phase with high reaction activity, and improving the alkali excitation reaction efficiency; then, by preparing a lubricating particle dispersion liquid and utilizing the synergistic effect of a silane coupling agent and interface lubricating particles, the uniform dispersity of the particles is enhanced; by adding the ionic liquid and the functionalized acylamino polymer, the dissolution and activation of the aluminosilicate are accelerated by utilizing the high polarity, the ion shielding effect and the dissolution enhancing performance of the ionic liquid; meanwhile, the amido polymer inhibits particle aggregation and stabilizes the particle dispersion state through the adsorption effect, the amido polymer and the amido polymer cooperate to form a lubricating layer in the slurry, reduce the viscosity of the slurry and improve the fluidity, and the early strength of the material is further improved by accelerating the generation of a gel phase.
Owner:ZHEJIANG UNIV OF SCI & TECH
Hybrid fiber reinforced ultrahigh-performance geopolymer concrete as well as preparation method and application thereof
The invention relates to hybrid fiber reinforced ultrahigh-performance geopolymer concrete as well as a preparation method and application thereof. Slag, metakaolin and silica fume are used as precursor materials of geopolymer concrete, a sodium hydroxide-water glass solution is adopted to compound an alkali activator, and steel fibers, polyvinyl alcohol fibers and modified glass chopped fibers of different sizes are mixed and doped, so that the brittleness of the geopolymer concrete is remarkably improved, and the service life of the geopolymer concrete is prolonged. The early strength and the high temperature resistance are improved. The hybrid fiber reinforced ultrahigh-performance geopolymer concrete has the characteristics of low carbon emission, ultrahigh strength, high temperature resistance, high durability and the like, and can meet the use of the geopolymer concrete in actual engineering. According to the ultrahigh-performance geopolymer concrete, solid waste resources are utilized at the same time, carbon emission in the concrete production process is reduced, and the ultrahigh-performance geopolymer concrete is environmentally friendly, low in carbon, ultrahigh in strength, easy to prepare and capable of being suitable for complex environmental engineering structures such as tunnels, bridges and high-rise buildings.
Owner:TONGJI UNIV
SAP geopolymer sprayed concrete and application thereof in primary lining of high-ground-temperature tunnel
The invention belongs to the technical field of tunnel construction, and discloses SAP geopolymer sprayed concrete and application thereof in primary lining of a high-ground-temperature tunnel. The concrete is prepared from the following raw materials in parts by mass: 100 parts of a cementing material, 13-16 parts of an alkali activator, 135-150 parts of river sand, 165-185 parts of stones, 32-41 parts of water and a proper amount of SAP, in percentage by mass, the use amount of the SAP is 0.2-0.3% of the binding material; the cementing material is composed of slag and fly ash according to a mass ratio of (0.24-0.26): 1. The SAP geopolymer sprayed concrete is applied to primary lining of a high-ground-temperature tunnel. The SAP geopolymer shotcrete not only has high strength and high toughness of traditional shotcrete, but also has good heat insulation and heat resistance, has supporting and heat insulation performance, realizes environment-friendly and pollution-free construction, and is particularly suitable for high-ground-temperature tunnels and the like.
Owner:HENAN POLYTECHNIC UNIV
Bulk solid waste-based road cementing material and preparation method thereof
The invention discloses a road cementing material based on bulk solid wastes and a preparation method thereof, and belongs to the field of geopolymer cementing materials. The material is prepared from 35-38 parts of fly ash, 15-18 parts of acid-washed red mud, 22-25 parts of carbide slag, 20-23 parts of phosphogypsum, 5-8 parts of rice hull ash, 6-9 parts of a water reducing agent and water, and the water-binder ratio is (0.4-0.5): 1. Wherein the pickling red mud is treated by 5-6% dilute sulphuric acid (pH is 8-9, and heavy metal is reduced by 30%), and the rice hull ash (SiO2 is greater than or equal to 85%) and the nano silicon dioxide (10-30nm) synergistically optimize the microstructure. The 28-day compressive strength of the material is larger than or equal to 35 MPa, the load cycle strength loss rate is smaller than or equal to 5%, the CO2 emission amount is 62 kg / t, the heavy metal leaching concentration is lower than the national standard by 50%, and the cost is only 31.6% of that of traditional cement. According to the invention, efficient synergistic utilization of four solid wastes of fly ash, red mud, carbide slag and ardealite is realized, and the concrete has the characteristics of high strength, low pollution, salt corrosion resistance and the like, is suitable for heavy-duty road base and severe cold area engineering, and has remarkable environmental protection and economic values.
Owner:INNER MONGOLIA UNIVERSITY +1
Composite phase change energy storage material taking lithium slag-based geopolymer microspheres as carrier and preparation method of composite phase change energy storage material
The invention provides a composite phase change energy storage material taking geopolymer (geopolymer) microspheres prepared from spodumene lithium extraction tailings (lithium slag) as a carrier and a preparation method of the composite phase change energy storage material, the geopolymer microspheres are prepared by a dispersion suspension method, and after the geopolymer microspheres are rinsed, dried and calcined, the composite phase change energy storage material is prepared by heating and vacuum impregnation. The phase change energy storage material is stably encapsulated in the geopolymer microspheres, so that the shaped composite phase change energy storage material is obtained. The invention not only provides a phase change energy storage material with large heat storage capacity, excellent packaging performance, good chemical stability, strong leakage resistance, strong cycle stability, strong heat conduction capability and good photothermal conversion capability, but also provides a novel high-added-value utilization mode of spodumene lithium extraction tailings.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY
Layered pore structure geopolymer based on combination of multi-stage low-temperature in-situ polymerization and ice template method and preparation method thereof
The invention discloses a layered pore structure geopolymer based on combination of multi-stage low-temperature in-situ polymerization and an ice template method and a preparation method of the layered pore structure geopolymer. The preparation method comprises the following steps: preparing geopolymer slurry; performing one-way freezing on the slurry to form a frozen green body containing a directionally arranged ice crystal template; before the frozen green body is subjected to freeze drying to remove an ice crystal template, specific multi-stage low-temperature in-situ polymerization treatment is carried out, and the treatment comprises at least two different low-temperature heat preservation stages which are sequentially carried out within the temperature range of-10 DEG C to + 5 DEG C, and the temperature of the low-temperature heat preservation stages is gradually increased; and then the treated green body is subjected to freeze drying and maintenance. According to the method, the multi-stage low-temperature in-situ polymerization step aiming at the reaction characteristics of the geopolymer is introduced before the ice crystal template is removed, so that the problems of low mechanical property and unstable pore structure of the geopolymer prepared by a traditional ice template method are solved, and the mechanical strength and structural integrity of the product are remarkably improved; meanwhile, a good layered pore structure and pore channel connectivity are kept.
Owner:SOUTH CHINA UNIV OF TECH
Geopolymer-based rare earth tailing curing material and preparation method thereof
The invention relates to the technical field of industrial solid waste resource utilization, and particularly discloses a geopolymer-based rare earth tailing curing material and a preparation method thereof, the geopolymer-based rare earth tailing curing material comprises 8%-15% of mineral powder, 20%-25% of fly ash, 20%-35% of rare earth tailings, 0.5%-3% of fiber, 0.5%-1% of nano oxide, 15%-20% of an alkaline activator and 15%-36% of water. The geopolymer-based rare earth tailing curing material provided by the invention has the advantages of excellent mechanical properties, good fluidity, appropriate curing time, environmental friendliness and the like, and is suitable for ecological restoration of mines, treatment of tailings ponds and preparation of road base materials; according to the invention, industrial wastes (such as fly ash, slag and rare earth tailings) are used, so that resource recycling is realized; the carbon emission is low in the production and use process of the material, and the sustainable development requirement is met.
Owner:华能庆阳煤电有限责任公司 +2
Water-permeable concrete brick loaded with metal-organic framework material and preparation method of water-permeable concrete brick
ActiveCN119330647AImprove water purification effectPlay a protective effectCement productionCeramicwareBrickMetal-organic framework
The invention discloses a water-permeable concrete brick loaded with a metal-organic framework material and a preparation method of the water-permeable concrete brick. The method comprises the following steps: mixing a silicon-aluminum material and an alkali activator to prepare geopolymer slurry, adding an organic amine reagent, mixing, and uniformly stirring to obtain modified geopolymer slurry; aggregate is added into the modified geopolymer slurry, the mixture is uniformly stirred and then loaded into a test mold, the test mold is demolded after standing for 1-2 days, a geopolymer water-permeable concrete brick is obtained, a metal salt solution is uniformly sprayed to the geopolymer water-permeable concrete brick, and the geopolymer water-permeable concrete brick is taken out after being subjected to steam curing for 3-5 h; and uniformly spraying the organic ligand solution on the cured geopolymer water-permeable concrete brick, performing steam curing for 18-22 hours, taking out the geopolymer water-permeable concrete brick after curing, and drying the geopolymer water-permeable concrete brick in a drying oven at 80-120 DEG C for 20-30 hours to obtain the water-permeable concrete brick loaded with the metal-organic framework material. The pervious concrete brick prepared by the invention has better adsorption efficiency, and can play an excellent water purification function in practical application.
Owner:WUHAN UNIV OF TECH
All-solid waste geopolymer grouting material and preparation method thereof
The invention provides an all-solid waste geopolymer grouting material and a preparation method thereof, and relates to the technical field of solid waste resource utilization and geopolymer grouting material preparation. The all-solid waste geopolymer grouting material comprises the following raw materials in parts by weight: 100-200 parts of an all-solid waste mixture, 40-50 parts of an alkaline activator, 0.1-0.5 part of an early strength agent, 0.5-1 part of a water reducing agent, 3-7 parts of a modifier and 70-90 parts of water, the all-solid waste material comprises slag powder, steel slag powder, phosphogypsum and fly ash; the modifying agent is prepared from aluminum dihydrogen phosphate, vinyl triacetoxysilane and ethylenediamine terminated polyethyleneimine. The all-solid waste geopolymer grouting material provided by the invention has the characteristics of good working performance, high early strength, micro-expansibility and the like.
Owner:HUBEI COMM PLANNING & DESIGN INST CO LTD
Preparation device of fly ash-based geopolymer regenerated roadbed
InactiveCN119237427AEnsure particle size uniformityImprove production efficiencySievingRoadwaysCompression moldingPolymer science
The invention relates to a preparation device for a fly ash-based polymer regenerated roadbed, and aims to solve the technical problem of low preparation efficiency of the current fly ash-based polymer regenerated roadbed. The preparation device comprises a base, an impact crusher is arranged at the top end of the base, a feeding box is arranged at the top end of the impact crusher, and fly ash raw materials are fed from the feeding box; the method comprises the following steps: crushing fly ash to a required particle size range, putting the fly ash into a screening mechanism through a connecting box, screening the crushed fly ash, removing oversized or undersized particles, ensuring the particle size uniformity of the fly ash, mixing and stirring the pretreated fly ash and an exciting agent through a mixing and stirring mechanism, and enabling the fly ash and the exciting agent to fully react to form a geopolymer. Finally, the geopolymer material is made into a regenerated roadbed material through the extrusion forming mechanism, the regenerated roadbed material is output through the belt conveyor, fly ash is converted into the high-performance geopolymer material, the preparation efficiency is greatly improved, and powerful support is provided for construction of a regenerated roadbed.
Owner:北京市弘洁蓝天科技股份有限公司
Energy storage battery box based on light high-performance concrete and preparation method of energy storage battery box
The invention discloses an energy storage battery box based on light high-performance concrete and a preparation method of the energy storage battery box, and belongs to the technical field of energy storage equipment. The energy storage battery box provided by the invention comprises a light high-performance concrete base body and a metal net embedded in the light high-performance concrete base body, according to the lightweight high-performance concrete matrix, a multi-component gel system composed of ordinary Portland cement, a shrinkage reducing agent, a solid waste-based geopolymer and steel slag micro powder is adopted, and solid waste-based artificial sand, fibers and a solid waste-based filling material in a specific proportion are compounded, so that a lightweight high-strength intrinsically fireproof concrete material is successfully prepared; meanwhile, a large amount of industrial solid wastes such as the desulfurized gypsum, the red mud, the steel slag tailings and the fly ash are utilized, efficient resource utilization is achieved, the raw material cost and full-life-cycle carbon emission are remarkably reduced, and the production efficiency is high.
Owner:SHANDONG UNIV +1
Garbage incineration fly ash geopolymer composite material and preparation method thereof
The invention relates to the technical field of solid waste treatment and recycling, and discloses a waste incineration fly ash geopolymer composite material and a preparation method thereof, and the composite material is prepared from waste incineration fly ash, apatite minerals, zero-valent iron powder, persulfate and an alkali activator. The preparation method comprises the following steps: mixing the waste incineration fly ash, apatite minerals, zero-valent iron powder and persulfate to obtain composite powder; performing frequency conversion mechanochemical synergistic activation on the composite powder, wherein the activation process comprises a low-temperature activation stage and a high-energy pulse activation stage; and finally, mixing the activated powder with an alkali activator, pouring, molding and curing. According to the method, the reduction reaction and the oxidation reaction are driven step by step in the same system by regulating and controlling the mechanical energy input time sequence, the compatibility problem of a reducing agent and an oxidizing agent is solved, different types of persistent organic pollutants are synergistically degraded, meanwhile, heavy metal is stabilized, and the treatment effect is good. And the fly ash is recycled to prepare a geopolymer material with mechanical properties.
Owner:SICHUAN ENERGY SAVING & ENV PROTECTION INVEST CO LTD +1
Solid waste-based conductive recycled aggregate high-ductility concrete and preparation method thereof
The invention relates to the technical field of geopolymer building materials, in particular to solid-waste-based conductive recycled aggregate high-ductility concrete and a preparation method thereof, and belongs to special low-carbon materials. Recycled fine aggregate is adopted, hybrid fibers are added, and the high-ductility concrete with excellent conductivity is prepared; a large amount of industrial waste is adopted in the preparation process, waste utilization and environmental protection are achieved, and good conductivity and toughness are achieved.
Owner:BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
Method, device and equipment for optimizing mix proportion of dredged sediment geopolymer and medium
PendingCN120409280ADesign optimisation/simulationMulti-objective optimisationGeopolymerGenetics algorithms
The invention discloses a dredged sediment geopolymer mix proportion optimization method, device and equipment and a medium. The method comprises the following steps: acquiring dredging sediment geopolymer mix proportion key parameters and corresponding compressive strength data, and constructing a to-be-processed sample set; constructing and training a compressive strength prediction model based on the to-be-processed sample set, and determining a nonlinear mapping relation function of the dredged sediment geopolymer mix proportion key parameters and compressive strength data; constructing a target fitness function according to the nonlinear mapping relation function, the dredged sediment geopolymer production material cost and the production carbon emission; constructing constraint conditions according to the matching ratio key parameter range of the dredged sediment geopolymer, the use amount range of production materials and the volume of the dredged sediment geopolymer per cubic meter; and based on the target fitness function and the constraint condition, carrying out dredging sediment geopolymer mix proportion key parameter multi-target optimization through a genetic algorithm, and determining a dredging sediment geopolymer target mix proportion. And multi-objective optimization of the mixture ratio of the dredged sediment geopolymer is realized.
Owner:NAT ENG RES CENT OF DREDGING TECH & EQUIP
3D printing geopolymer composite material with low drying shrinkage and preparation method thereof
PendingCN119638286Aimprove performanceImprove stabilityAdditive manufacturing apparatusCement production3d printPowder mixture
The invention relates to the technical field of 3D printing building materials, in particular to a 3D printing geopolymer composite material with low drying shrinkage and a preparation method thereof.The 3D printing geopolymer composite material is prepared from, by mass, 400 parts of slag powder, 320 parts of fly ash, 80 parts of steel slag micro powder, 1200 parts of quartz sand, 5.1-25.6 parts of sodium hydroxide, 46.4-66.9 parts of sodium silicate, 8 parts of barium chloride and 296 parts of water. The preparation method comprises the following steps: fully mixing the slag powder, the fly ash, the steel slag micro-powder and the quartz sand according to a preset mass ratio to obtain a uniform basic powder mixture; adding an alkali activator and barium chloride into the basic powder mixture, and continuously mixing until the mixture is uniform to obtain a first mixture; and adding water into the first mixture according to a preset water-binder ratio, and carrying out stirring treatment according to a preset stirring method to obtain the 3D printing geopolymer composite material with low drying shrinkage. According to the invention, the drying shrinkage can be reduced.
Owner:HEBEI UNIV OF TECH
Novel concrete column fiber geopolymer formwork structure and fixing method
ActiveCN119352753AEasy to manufactureLow technical requirements for installationCement productionForms/shuttering/falseworksFiberMortise and tenon
The invention provides a novel concrete column fiber geopolymer formwork structure and a fixing method, and relates to the technical field of building structures. Comprising a fiber geopolymer template, a polyimide tenon structure is arranged on one side of the fiber geopolymer template, and a polyimide mortise structure is arranged on the other opposite side of the fiber geopolymer template; the polyimide tenon structure is suitable for being connected with the polyimide mortise structure of another fiber geopolymer template in a matched mode to form a mortise and tenon connection structure. The inner sides, close to the polyimide tenon structure and the polyimide mortise structure, of the fiber geopolymer template are each provided with a protection supporting plate connected to the surface of the fiber geopolymer template, and the two protection supporting plates are suitable for being connected in an abutting mode to form a protection baffle of the mortise and tenon connection structure. By means of the scheme, construction and installation of the building formwork are facilitated.
Owner:HUAQIAO UNIVERSITY
Method for preparing construction material for roadbed and pavement by using construction solid waste-based geopolymers
A method for preparing a construction material for a roadbed and a pavement by using construction solid waste-based geopolymers includes: preparing a construction solid waste-based geopolymer cementitious material and construction solid waste-based recycled sand by using construction solid wastes, and then preparing the construction material by batching, stirring, molding, and curing the cementitious material and the recycled sand with aggregates and water. Barium hydroxide is determined as a main activator and a high-pressure activation is performed, thereby promoting a dissolution efficiency of active silicon and aluminum in the construction solid wastes; and a compensator is added to promote polymerization to obtain the cementitious material with a compact three-dimensional network structure. The recycled sand is also obtained, and the construction material is obtained by using the recycled sand and the cementitious material, thereby fully utilizing the construction solid wastes and improving preparation efficiency of the construction material.
Owner:XIAN RES & DESIGN INST OF WALL & ROOF MATERIALS CO LTD
Ecological solidified soil integrating scouring protection and seaweed restoration and preparation method of ecological solidified soil
The invention discloses scouring protection and seaweed restoration integrated ecological solidified soil and a preparation method thereof, and belongs to the technical field of ocean engineering and ecological restoration. The material is prepared from the following components in parts by weight: 800 to 1000 parts of sea mud, 200 to 400 parts of calcined coral sand, 50 to 150 parts of a modified chitosan gelling agent, 100 to 200 parts of a silicate geopolymer, 100 to 250 parts of slow-release nutritional ceramsite, 50 to 120 parts of seaweed seeds, 80 to 160 parts of a seawater activating agent and 20 to 50 parts of a microbial carrier loaded with saline-alkaline tolerant bacteria. The material has the characteristics of underwater dispersion resistance and self-leveling, can resist scouring at the flow speed of 2.5 m / s, and realizes that the 30-day accumulative germination rate of sea grass is greater than or equal to 80%. The method breaks through the bottleneck of function splitting of traditional material engineering protection and ecological restoration, synchronously completes scouring protection and seaweed community reconstruction, and is suitable for ocean engineering scouring protection and seaweed ecological restoration engineering.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Composite system geopolymer grouting material and preparation method thereof
The invention discloses a composite system geopolymer grouting material and a preparation method thereof. The composite system geopolymer grouting material comprises the following raw materials in percentage by mass: 50-70% of coal gangue, 10-30% of fly ash and 10-30% of cement. Functional additives: 5%-20% of desulfurized gypsum and 5%-15% of bentonite; the composite exciting agent is formed by compounding carbide slag and sodium silicate according to the mass ratio of 1: 1-1: 2. The geopolymer is excellent in mechanical property, meets engineering requirements, is remarkable in environmental protection benefit, conforms to double-carbon target low-carbon process innovation: a calcination-free process: traditional high-temperature calcination is abandoned (the temperature needs to be 550-900 DEG C), carbon emission is reduced by more than 30% (compared with a contrast, the carbon emission of a traditional process is increased by 35%), and the geopolymer conforms to the green positioning of low energy consumption and low three wastes of geopolymers. The cost advantage is prominent, the economic value is remarkable, the raw material cost is reduced, specifically, the coal gangue (low-cost solid waste) is used for replacing 30%-50% of cement, and the comprehensive raw material cost is reduced by 40% (compared with a traditional cement-based grouting material).
Owner:JIANGSU INST OF GEOLOGY & MINERAL RESOURCES DESIGN
Preparation process of high-toughness anti-cracking alkali-activated geopolymer cementing material
The invention discloses a preparation process of a high-toughness anti-cracking alkali-activated geopolymer cementing material, which comprises the following steps: (1) mixing steel slag powder and a phosphoric acid solution, heating, preserving heat, reacting, drying to remove moisture, and grinding to obtain pretreated steel slag powder; and (2) uniformly mixing brucite powder, potassium silicate and water to form slurry, then adding basalt fibers into the heated slurry, standing, separating out the fibers after standing, uniformly mixing the fibers with the pretreated steel slag powder, and drying to obtain pretreated fibers. And (3) placing the pretreated fiber in a closed container containing carbon dioxide and water vapor, and carrying out heat preservation and maintenance to obtain the modified fiber. And (4) weighing the following raw materials according to the following proportion: aluminum-silicon solid waste micro powder, coarse aggregate, fine aggregate, the modified fiber, an alkali activator and a water reducing agent. The preparation method comprises the following steps: uniformly mixing the raw materials, adding water and uniformly stirring. The fiber subjected to surface treatment effectively improves the crack resistance of the geopolymer cementing material.
Owner:SICHUAN ZHANTAIJIN TECHNOLOGY CO LTD +1
Modified fiber-fly ash-based geopolymer cementing material and preparation method thereof
The invention discloses a modified fiber-fly ash-based geopolymer cementing material and a preparation method thereof. The modified fiber-fly ash-based geopolymer cementing material comprises 40-60 parts of fly ash, 15-35 parts of slag, 10-30 parts of steel slag, an exciting agent accounting for 4-20 parts of the mass of the cementing material, 30-38 parts of water accounting for the mass of the cementing material and 0-2 parts of agent modified fiber accounting for the mass of the cementing material. The modified fiber-fly ash-based geopolymer cementing material prepared by the method is a low-carbon material, the solid waste resource fly ash can be effectively utilized, meanwhile, the risk of solid waste stockpiling and discharging is reduced, and the modified fiber-fly ash-based geopolymer cementing material can be used for manufacturing various green building material products. The economical problems of solid waste resource storage and resource application can be effectively solved; part of cement is replaced to solidify soft soil; a high-performance material with condensation flow characteristics and mechanical strength characteristics is simple and economical in material taking, rapid and convenient to construct and reliable and stable in curing effect; the modified fiber is introduced, so that the mechanical property is better improved, and the curing effect is enhanced.
Owner:DONGHUA UNIV
High-strength fly ash-based geopolymer glue slurry and preparation method thereof
The invention relates to the technical field of geopolymers, and discloses a high-strength fly ash-based geopolymer glue slurry and a preparation method thereof, the high-strength fly ash-based geopolymer glue slurry comprises 62-70 parts by weight of an activated geopolymer precursor, 7-11 parts by weight of an alkali activator, 80-95 parts by weight of aggregate, 0.4-2 parts by weight of silica grafted polyester fiber, and 18-22 parts by weight of water. The preparation method comprises the following steps: carrying out ball-milling activation on fly ash and slag by using triethanolamine to obtain an activated geopolymer precursor; the surface of the polyester fiber is grafted with nano silicon dioxide, the nano silicon dioxide has a good interface compatilizer with a silicon dioxide phase and a silicate phase in the fly ash and the slag, the compatibility between the polyester fiber and a geopolymer precursor is improved, meanwhile, hydrophilic groups such as carboxyl and imino are introduced to the surface of the fiber, the dispersity in water-based slurry is better, and under the synergistic effect, the water-based slurry is better in water-based property. The compressive strength and the breaking strength of the geopolymer glue slurry test piece are improved.
Owner:TONGJI UNIV +1
Formula and preparation method of geopolymer loess curing agent based on multiple bulk solid wastes
The invention discloses a geopolymer loess curing agent formula based on multi-element bulk solid waste and a preparation method thereof, and relates to the technical field of bulk solid waste geopolymer loess curing agents, the geopolymer loess curing agent formula comprises the following components: 50-70 parts of a curing material component, 10-30 parts of a reinforcing component, and 5-25 parts of an excitation component; the curing material component is fly ash, and the particle size of the curing material component is smaller than 300 microns; the reinforcing component is rice hull ash (the main component is SiO2); the single-component geopolymer curing agent is prepared by taking the rice hull ash and bulk solid waste as main raw materials, the use amount of solid waste exceeds 80%, on one hand, various solid waste can be effectively treated through the method, and on the other hand, the use amount of the solid waste is reduced; on the one hand, the solid waste can be converted into a product with a high additional value, full utilization of resources is achieved, on the other hand, the stacking cost of the solid waste can be reduced, the negative influence of the solid waste on the environment is reduced, and meanwhile a large number of resources are saved.
Owner:LANZHOU UNIV
Fly ash-based geopolymer carbon sequestration adsorption material and preparation method thereof
The invention discloses a fly ash-based geopolymer carbon sequestration adsorption material and a preparation method thereof, and belongs to the technical field of engineering materials. The material disclosed by the invention is modified by adding 13X zeolite with a specific particle size, and the carbon sequestration adsorption performance of the material is remarkably improved through an in-situ hydrothermal conversion process. The fly ash-based geopolymer material and the preparation method disclosed by the invention are simple and easy to implement, are easy to implement in industrial production, and can overcome the defects of low mineralization efficiency and unstable reaction products caused by direct reaction of solid waste with CO2 to generate a mineralized (carbonate) filling material at present. The geopolymer carbon sequestration adsorption material has a wide application prospect, provides a new method for synergistically solving the problems of carbon sequestration, solid waste disposal and waste underground space reutilization, and has important environmental protection, social and economic benefits.
Owner:YUNLONG LAKE LAB OF DEEP UNDERGROUND SCI & ENG +1
High-performance self-compacting high-crack-resistance fiber-reinforced cement-based composite material and preparation method thereof
The invention relates to the field of cement-based composite materials, and particularly discloses a high-performance self-compacting high-crack-resistance fiber-reinforced cement-based composite material and a preparation method thereof.The cement-based composite material is prepared from cement, fly ash microspheres, silica fume, a modified geopolymer, sand, fine stone, polypropylene fibers, an expanding agent, an additive and water; wherein the additive at least comprises welan gum; the preparation method comprises the following steps: mixing and stirring the cement, the fly ash beads, the silica fume, the sand, the fine stone and the modified geopolymer, and adding the expanding agent to prepare a primary mixture; and mixing the admixture with water, adding the primary mixture, then adding the polypropylene fiber, stirring and mixing, then adding the rest admixture, and stirring to obtain the product. The cement-based composite material has the characteristics that the prepared cement-based composite material has better fluidity and better segregation resistance and crack resistance, and the cement-based composite material can be applied to the fields of non-dismantling bottom die floor support plate bottom plates, foundation support grouting reinforcement, section increasing method reinforcement, quick pavement repair and the like.
Owner:HOMOGEN NEW QUALITY (XIAN) NEW MATERIALS CO LTD