149 results about "Cement based composites" patented technology

The invention relates to an ionic redox couple thermoelectric cement-based composite material, the composite material comprises a cement matrix and redox couples, and the redox couples exist in pores of the cement matrix; wherein the redox pairs are K4 [Fe (CN) 6] and K3 [Fe (CN) 6], and the porosity of the cement matrix is 25%-50%. According to the invention, the migration of ions in a cement matrix is regulated and controlled by introducing the redox couple, so that a relatively high Seebeck coefficient, conductivity and power factor are achieved while good mechanical properties are maintained, and the thermoelectric conversion efficiency is remarkably improved. Besides, the composite material can drive electrode reaction through temperature difference to generate a closed current loop, stable current output is achieved, and the problem of current output of a traditional ionic thermoelectric material is solved.

The invention belongs to the technical field of building materials, and provides a cement-based composite material with an organic-inorganic interpenetrating structure and a preparation method of the cement-based composite material. According to the preparation method disclosed by the invention, the monomer and the polymer containing the active group are introduced, the in-situ polymer formed by the monomer through in-situ polymerization and the polymer containing the active group form a double-network polymer, a single-network structure is refined, and the single-network structure and a cement hydration reaction product which is synchronously performed form an organic-inorganic interpenetrating structure; the interaction between double networks and the cement-based material is enhanced, meanwhile, the microstructure is optimized, the mechanical property of the single polymer modified cement-based material can be improved, the compressive strength is improved, and the breaking strength is further enhanced; the prepared cement-based composite material with the organic-inorganic interpenetrating structure has excellent breaking strength and compressive strength.

The invention discloses an interface enhanced composite shear wall based on a high-ductility cement-based material. The high-ductility cement-based composite materials are formed in edge constraint areas on the two sides of the shear wall, and the common concrete is formed in a core area in the middle of the shear wall. The interface separation net is a high-strength ribbed non-dismantling formwork net and is vertically arranged at the junction of the edge constraint area and the core area, the section of the interface separation net is in a periodic concave-convex wave shape or a stepped shape, and a macroscopic mechanical meshing interface is formed. The interface seaming ribs are U-shaped ribs and are horizontally arranged at the positions of the inter-rib slurry penetrating nets of the interface separation net in a penetrating mode, one ends of the interface seaming ribs are anchored to the edge constraint area common steel bars, and the other ends of the interface seaming ribs extend into the core area and are connected with longitudinal and transverse rib cross joints of the composite material grid ribs in a hooked mode; the problems of rigidity mutation and slippage of the heterogeneous material interface are solved by utilizing the geometric occlusion effect of the interface separation net and the anchoring effect of the deep bolt pins and joints of the interface sewing ribs, cooperative work of a high-ductility material and common concrete is achieved, and good anti-seismic performance is achieved.

The invention discloses a microcapsule phase change cement material, which is prepared by compounding a microcapsule with phase change performance and a cement matrix, the microcapsule is of a core-shell structure, the raw materials of the shell are melamine, urea and formaldehyde, the raw material of the core material is octadecane, and Tween 80 and lauryl sodium sulfate are used as emulsifiers. The preparation method comprises the following steps: 1, preparing an MUF resin prepolymer; 2, preparing a core material O / W emulsion; 3, polymerization reaction of the microcapsules; and 4, preparing the microcapsule phase change cement material. When the composite material is used as a cement-based composite material, the melting temperature ranges from 25 DEG C to 29 DEG C, the crystallization temperature ranges from 19 DEG C to 23 DEG C, the melting enthalpy ranges from 13.47 J / g to 29.78 J / g when the mixing amount is 10%-30%, the crystallization enthalpy ranges from 12.94 J / g to 28.41 J / g, and the coating efficiency is 67.5%. The initial decomposition temperature ranges from 386.13 DEG C to 390.96 DEG C, the finishing temperature ranges from 399.49 DEG C to 406.42 DEG C, and the maximum degradation temperature ranges from 438.78 DEG C to 443.64 DEG C; the heat conductivity coefficient is 0.3216 to 0.3949, and is improved by 39.4 percent compared with that of standard cement.

The invention discloses a lightweight heat-insulation cement-based composite material, and relates to the technical field of cement-based composite materials, the lightweight heat-insulation cement-based composite material comprises the following material components by weight: 40-60 parts of a cement matrix, 20-35 parts of a lightweight aggregate, 5-12 parts of a polymer modifier, and 0.5-0.3 part of a functional additive, the cement matrix is sulphoaluminate cement or Portland cement, and the functional additive is a water-based composite material. The lightweight aggregate comprises hollow glass beads with the particle size of 0.1-0.5 mm, expanded perlite with the particle size of 0.5-2 mm and surface modified aerogel particles, the aerogel particles are silicon dioxide aerogel or silicon carbide aerogel, the surface area of the aerogel particles is 700-600 m / g, the pore diameter of the aerogel particles is 40-50 nm, the polymer modifier is acrylate-styrene copolymer emulsion, and the particle size of the polymer modifier is 1-10 m / g. The solid content of the acrylate-styrene copolymer emulsion is 50-45%, the glass transition temperature of the acrylate-styrene copolymer emulsion is-10 DEG C to 15 DEG C, and the functional additive comprises a cellulose ether thickener, a polycarboxylate superplasticizer and a nano aluminum oxide dispersion liquid.

The invention discloses a high-elastic-modulus and high-ductility cement-based composite material for assembly type component joint connection and a preparation method thereof.According to the scheme, the composite material is prepared from, by mass, 500-700 parts of cement, 360-504 parts of granulated blast furnace slag, 120-168 parts of fly ash, 120-168 parts of silica fume, 323-462 parts of quartz sand and 377-539 parts of iron ore sand. The concrete is prepared from the following components in parts by weight: 176 to 246 parts of water, 14 to 18 parts of composite fiber, 5.5 to 7.5 parts of a water reducing agent, 30 to 42 parts of an expanding agent, 5 to 7 parts of a binder, 0.5 to 0.7 part of a retarder, 1 to 1.4 parts of a deflocculating agent, 0.15 to 0.21 part of a defoaming agent and 0.5 to 0.7 part of a rheological agent. Furthermore, a corresponding step-by-step stirring preparation process is matched, so that the accurate regulation and control of the material performance are effectively realized. According to the invention, the problems of poor working performance, low tensile strength, insufficient elastic modulus and the like of the traditional high-ductility concrete (ECC) in assembly type component node connection can be solved, and the strict requirements of assembly type nodes on strength, construction and deformation performance can be met.

The invention discloses a microorganism-nano synergistically reinforced cement-based composite material for self-repairing concrete cracks, which realizes the self-repairing and performance improvement of the cracks through the synergistic effect of bacillus pseudofirmus, carbon nanotubes, nano magnesium oxide and red mud. The material has the following characteristics: bacillus pseudofirmus is used as a microbial remediation agent, and dormant spores are activated when meeting water and oxygen and then are subjected to a series of biochemical reactions to induce calcium carbonate precipitation products so as to effectively fill microcracks; the carbon nano tube network structure not only enhances the mechanical property of the concrete, but also can provide a channel for directional deposition of a repairing substance; the nano magnesium oxide compensates shrinkage stress through hydration reaction, and meanwhile, a proper alkaline environment is maintained to guarantee microbial activity; the industrial waste red mud is used for replacing part of cement, so that carbon emission is reduced, and microorganisms are fixed by utilizing the porous characteristic of the red mud.

The invention discloses a lightweight high-strength high-toughness cement-based composite material and a preparation method thereof. The composite material is prepared from the following components in parts by mass: 1000 parts of a cementing material, 200-400 parts of fine aggregate, 150-250 parts of water, 10-30 parts of a water reducing agent, 14-23 parts of synthetic fiber and 10-30 parts of silicon dioxide aerogel. The preparation method comprises the following steps: mixing and stirring 1000 parts of the cementing material, 200-400 parts of the fine aggregate and 10-30 parts of the silicon dioxide aerogel to obtain a dry material, then adding 10-30 parts of the water reducing agent and 150-250 parts of the water into the dry material, mixing and stirring to obtain neat paste, and finally adding 14-23 parts of the synthetic fiber into the neat paste while stirring, and mixing and stirring to obtain slurry. The light-weight, high-strength and high-toughness cement-based composite material is few in component variety, simple in preparation method, low in volume weight, high in strength and large in ultimate tensile strain, and the problems that a traditional light-weight and high-toughness cement-based material is large in light-weight aggregate mixing amount, low in strength, poor in ductility and stability and the like are solved; and the method has a wide application prospect in infrastructures such as high-rise building structure facades and large-span bridge structure pavement layers.

The invention discloses an artificial biological reef for naturally repairing coral, a system and a preparation method. The artificial biological reef body comprises a main body structure made of a cement-based composite material, and at least one hollow cavity is formed in the main body structure; the ecological through holes penetrate through the wall thickness of the main body structure and are used for promoting water flow exchange and marine organism channels; the biological affinity surface layer is arranged on the surface of the main body structure, is made of cement-based materials mixed with seaweed extracts and has rough textures so as to promote attachment of coral larvae; and a reinforcing framework formed by a corrosion-resistant fiber reinforced material embedded in the main body structure improves the overall structural strength and impact resistance. The system comprises a plurality of reefs, special connecting pieces and a foundation stabilizing platform, and can be combined into an array for simulating a natural reef space structure. The preparation method comprises the steps of seaweed extract preparation, bioactive slurry preparation, assembly prefabrication, integrated pouring forming, maintenance and function integration, and preparation of the eco-friendly, stable-structure and multifunctional artificial reef is achieved.

The invention provides a high-strength and high-ductility damage self-repairing cement-based composite material based on spiral memory alloy fibers and a preparation method of the high-strength and high-ductility damage self-repairing cement-based composite material, and belongs to the technical field of underwater engineering concrete structures. According to the invention, the matrix mix proportion of the cement-based composite material and the hybrid reinforcement effect of the three fibers on the matrix are redesigned, so that the tensile strain capacity is also remarkably improved while the strength of the UHPSC is improved, and the deformation ductility and the cumulative energy dissipation capacity of the cement-based composite material are further remarkably enhanced; as the spiral superelastic SMA fibers have self-resetting capacity, restoring force can be provided for the unloaded cement-based composite material, tensile cracks of the cement-based composite material are promoted to be automatically closed or the width of residual cracks of the cement-based composite material is obviously reduced, and on the basis, the self-healing capacity of an incompletely hydrated cementing material in the cement-based composite material is matched, so that the self-healing performance of the cement-based composite material is improved. And the UHPSC material can present a good damage self-repairing effect.

The invention relates to a nanofiber cement-based composite material suitable for 3D printing. The nanofiber cement-based composite material comprises the following raw materials in parts by weight: 45-50 parts of cement, 8-12 parts of silica fume, 6-10 parts of fly ash, 5-8 parts of sand, 3-5 parts of PVA, 3-5 parts of a polycarboxylate superplasticizer, 3-5 parts of floating beads and 30-35 parts of water. According to the cement-based composite material disclosed by the invention, the cement, the silica fume, the fly ash and other raw materials are matched with the modifier doped with the crystal whiskers and the effect supplement based on nano SiO modification, and the prepared cement-based composite material has excellent mechanical properties and coordinated improvement of fluidity through blending, coordination and common synergism of the raw materials.

The application provides a cement-based composite material and a preparation method thereof, and belongs to the technical field of composite material preparation.The application comprises the following steps: step one, preparing heat-conducting and enhanced phase change energy storage microcapsules with uniform and controllable particle sizes; step two, preparing heat-conducting and enhanced phase change energy storage microcapsules with controllable wall thicknesses; and step three, preparing a phase change energy storage cement-based composite material test piece.The application prepares heat-conducting and enhanced phase change energy storage microcapsules with uniform and controllable particle sizes through a microfluidic chip, controls the wall thicknesses of the microcapsules through a layer-by-layer self-assembly method, and finally adds the heat-conducting and enhanced phase change energy storage microcapsules with controllable wall thicknesses into a cement paste, so that the microcapsules are dispersed in the cement paste, and a phase change energy storage cement-based composite material with good heat regulation capacity is prepared.

This invention relates to the field of cement technology, specifically to a fiber-reinforced high-strength cement pole and its preparation method. The pole comprises a steel wire skeleton and a conical annular pole body covering its outer circumference. The pole body is formed by centrifugal molding and curing of a cement-based composite material containing interfacially pre-complexed basalt chopped fibers. The interfacially pre-complexed basalt chopped fibers are obtained sequentially through alkaline activation, silane-nano silica treatment, polycarboxylate segment grafting, and calcium ion pre-complexation, and are added to the slurry after the cementitious material is initially moistened and before the aggregate is added. This method improves the dispersibility and interfacial bonding stability of the basalt chopped fibers in a low water-cement ratio cement matrix, thereby enhancing the pole's compressive, tensile, crack, shrinkage, and freeze-thaw resistance.

This invention provides an ultra-high ductility cement-based composite material for marine engineering and its preparation method. The ultra-high ductility cement-based composite material comprises, by weight, the following raw materials: 250-500 parts cement clinker, 400-600 parts fly ash, 200-300 parts mineral powder, 100-150 parts silica fume, 160-240 parts metakaolin, 600-900 parts quartz sand, 10-20 parts organic synthetic fiber, 20-30 parts organic rust inhibitor, 180-240 parts water, and 1-8 parts water-reducing agent. The organic rust inhibitor provided by this invention can inhibit steel corrosion and chloride ion intrusion into concrete through the dual effects of binding chloride ions and forming a passivation film, thereby improving concrete durability. By controlling the mix proportions of the four mineral admixtures and the dosage of the synthetic fiber component, the concrete can better balance high strength, high ductility, high durability, high flowability, and excellent resistance to deformation.

This invention discloses a testing device and method for tensile deformation of fiber-reinforced cementitious materials, belonging to the field of engineering material testing technology. The testing device mainly includes three parts: a support frame, a lever system, and a specimen mounting system. The main steps of the testing method include: lifting the lever to unload; installing the specimen mounting system, slowly releasing the lever and finely adjusting the position of the tensile specimen to reduce eccentricity and achieve preloading; repeatedly lifting and unloading the lever, and finely adjusting the centering tensile clamp and the tensile specimen; installing the displacement sensor and zeroing it in the unloaded state; adjusting the weight of the lever according to the real-time display value of the force sensor to complete the suspension and precise loading of the tensile specimen. This method applies tensile force to the cement-based composite material through the lever mechanism and performs arbitrary crack propagation evaluation based on the micro-cracks in the cement-based material using digital image processing, which can quantitatively characterize the creep deformation and crack propagation process of cement-based composite materials under continuous tensile load.

The invention relates to the technical field of cement-based composite materials, in particular to a basalt fiber reinforced cement-based composite material and a preparation method thereof. The basalt fiber reinforced cement-based composite material is prepared from the following raw materials in parts by weight: 300 to 400 parts of fine aggregate, 200 to 300 parts of sulphoaluminate cement, 80 to 120 parts of water, 40 to 60 parts of filler, 30 to 40 parts of powder, 30 to 40 parts of silica fume and 1 to 3 parts of water reducing agent. According to the preparation method, nano-cellulose is prepared after corbicula fluminea is treated, the nano-cellulose can be filled in the material to play a role in enhancing toughness, and meanwhile, the porosity of a material interface transition area can be reduced by mixing and adding the phytic acid modified starch and utilizing the complexing effect of phosphate groups of the phytic acid modified starch; further, all the component materials are combined more uniformly, stress transfer among all the component materials is smoother, and the effect of improving the strength performance of the cement-based composite material is achieved.

The invention relates to the field of bridge damping, in particular to a near-fault bridge anti-seismic toughness improving device and a test method thereof.The bridge comprises T-beams, a cover beam, a diaphragm plate between every two adjacent T-beams and an ECC column located between the two T-beams; two pairs of SMA disc spring devices are arranged on the ECC column body, one pair of SMA disc spring devices are arranged towards the T beam, and the other pair of SMA disc spring devices are arranged towards the transverse partition plate; the SMA disc spring devices are used for enabling the T beams to recover to the initial positions through the recovery characteristic of the SMA disc spring devices after relative displacement of the bridge in the transverse bridge direction occurs, and the ECC column is arranged between the two T beams of the bridge, so that the T beams can be recovered to the initial positions. The limit tensile strain of the ECC (fiber cement-based composite material) material can reach more than 200 times that of the traditional concrete, and the ECC material is accompanied by the multi-crack cracking phenomenon of fine cracks, so that the strain hardening characteristic of a similar metal material under the tensile effect is formed, and the structural deformation caused by earthquakes can be effectively dealt with.

The application discloses a kind of unbound post-tensioned prestressed fabricated column foot and post-earthquake rapid repair method, belong to building structure seismic and fabricated steel structure technical field.The column foot includes base plate, steel column, friction layer, strain hardening cement-based composite sleeve, vertical prestressed steel bar and cover plate;The friction layer uses block type structure, and is spliced by several friction layer monomers;Vertical prestressed steel bar is threaded through strain hardening cement-based composite sleeve and cover plate, and is fixed cover plate and applies prestress to vertical prestressed steel bar by disc spring group and anchor nut being set to its top end, realizes the unification of " high seismic, easy construction, fast repair ".The application also discloses the post-earthquake rapid repair method of the column foot, including post-earthquake evaluation, elastic self-resetting, installing temporary support, in-situ jacking, lateral replacement, resetting tensioning and the like steps, using unbound characteristics, without lifting off steel column can be completed in 3-4 hours friction layer replacement.

The invention discloses a cement-based composite material and a preparation method thereof, and relates to the technical field of composite materials, and the cement-based composite material comprises the following components in parts by mass: 400-500 parts of cement, 150-200 parts of water, 0.5-1.0 part of a water reducing agent and 0.12-1.2 parts of magnetic graphene; the invention also provides a preparation method of the cement-based composite material. The preparation method comprises the following steps: S1, preparing the components according to the amount; s2, uniformly mixing water, a water reducing agent and the magnetic graphene, and performing ultrasonic dispersion for 10-30 minutes to form a magnetic graphene dispersion liquid; and S3, uniformly mixing and stirring the magnetic graphene dispersion liquid obtained in S2 and cement, putting the mixture into a standard mold, and then putting the standard mold into a uniform magnetic field generator for directional treatment to obtain the cement-based composite material.

The invention relates to the technical field of bridge pier repair, and particularly discloses a high-toughness corrosion-resistant ultrathin cement-based composite material for bridge pier reinforcement and a prefabricated assembled pile casing prepared from the high-toughness corrosion-resistant ultrathin cement-based composite material. The cement-based composite material is prepared from the following components in parts by weight: 20 to 30 parts of ordinary Portland cement, 10 to 20 parts of fly ash, 10 to 20 parts of mineral powder, 5 to 10 parts of silica fume, 25 to 45 parts of quartz sand, 1 to 2 parts of copper-plated steel fiber, 0.1 to 0.5 part of POM fiber, 10 to 15 parts of styrene-butadiene emulsion, 3 to 8 parts of phosphorus and aluminum co-doped nano silicon dioxide, 1 to 5 parts of modified rubber particles, 1 to 2 parts of polycarboxylic acid high-performance water reducing agent and 16 to 20 parts of water. On the basis of phosphorus and aluminum co-doped nano silicon dioxide and modified rubber particles, a high-toughness and corrosion-resistant cement-based composite material suitable for the ultrathin prefabricated pile casing is developed, so that the pile casing has the characteristics of small dead weight, good toughness and large design freedom degree, and has a better reinforcing effect on a concrete bridge lower structure with durability damage.

The application discloses an ultra-early-strength high-anti-cracking cement-based composite material and a preparation method thereof, and belongs to the technical field of building materials. The cement-based composite material comprises cement, aggregate, fiber, water reducing agent, early-strength agent, composite expansion agent, admixture and retarder. The composite expansion agent comprises expansion agent A and coated expansion agent B. The tensile strength of the coating layer of the coated expansion agent B is 1.5-2.0 MPa, and the elongation at break is 5-10%. The cement-based composite material effectively solves the problem of early cracking of ultra-early-strength cement and has high anti-cracking performance.

The application relates to the technical field of fiber reinforced cement-based composite materials, and discloses a PVA fiber oil coating method oriented by fiber-gel material adhesion, which comprises the following steps: determining a target interface adhesion performance grade between polyvinyl alcohol fibers and gel materials; according to the target interface adhesion performance grade, an oil coating liquid is prepared; dry polyvinyl alcohol fibers are immersed in the prepared oil coating liquid, and the polyvinyl alcohol fibers absorb the prepared oil coating liquid; the polyvinyl alcohol fibers absorbing the oil coating liquid are subjected to spin-drying treatment; and the spin-dried polyvinyl alcohol fibers are subjected to heat curing treatment, so that a continuous, uniform and non-peeling coating film layer is formed on the surface of the polyvinyl alcohol fibers. By establishing a five-grade adhesion performance grading system based on a single fiber tensile test and correlating the five-grade adhesion performance grading system with macroscopic tensile performance and crack behavior of concrete, the problem that adhesion performance regulation lacks systematicness and quantitative basis in the prior art is solved.

The invention discloses an ultra-light high-toughness aerogel reinforced foam concrete composite material as well as a preparation method and application thereof. The directional freezing technology is applied to bionic structure construction of the cement-based composite material for the first time, rigid-flexible compounding of a foam concrete framework and PVA aerogel is successfully achieved, and a new material with a pearl layered ordered porous structure is created. The material subverts the inherent properties of weight and brittleness of a traditional cement-based material, unification of ultra-low density (-200 kg / m), high compressive strength (gt and 7 MPa at 80% strain) and high toughness is achieved, and the toughness of the material is far better than that of traditional foam concrete.

The invention relates to the technical field of cement-based composite materials, and discloses a composition for preparing a cement-based composite material, the cement-based composite material as well as a preparation method and application of the cement-based composite material. The composition contains amorphous hydrated calcium silicate and a thermal response organic monomer in a weight ratio of 1: (0.1-1), the thermal response organic monomer is selected from lipoic acid and derivatives thereof; wherein the average particle size of the amorphous hydrated calcium silicate is 10 to 100 nm. The compressive strength of the cement-based composite material prepared from the composition for preparing the cement-based composite material reaches 100 MPa or above, and the peak strain exceeds 6%; in addition, in a crushing and pressing cycle experiment, the compressive strength retention rate of the cement-based composite material after five cycles is still higher than 60%.

The application discloses a conductive cement-based composite material and a preparation method and application thereof. The conductive cement-based composite material comprises the following components in mass parts: cementing material: 100 parts; fine aggregate: 150-450 parts; conductive hydrogel dry powder: 0.1-2 parts; water reducing agent: 0.5-5 parts. The preparation method of the conductive cement-based composite material comprises the following steps: 1) uniformly mixing the conductive hydrogel dry powder and the cementing material to prepare a mixture, and dissolving the water reducing agent in water to prepare a water reducing agent solution; 2) uniformly mixing the water reducing agent solution into the mixture, then uniformly mixing the fine aggregate, then injecting a mold for forming, then demolding and curing, so that the conductive cement-based composite material is obtained. The conductive cement-based composite material has excellent conductive performance and excellent mechanical performance, and the preparation method is simple, the production cost is low, and the conductive cement-based composite material is suitable for large-scale popularization and application.

The invention discloses a super-early-strength spraying ultrahigh-toughness cement-based composite material and a preparation method thereof. The super-early-strength spraying ultrahigh-toughness cement-based composite material is prepared from the following components in parts by mass: 1305 parts of a cementing material, 225 to 435 parts of water, 213 to 412 parts of fine aggregate, 1 to 2 parts of a water reducing agent, 83 to 158 parts of a rapid hardening agent, 1.5 to 3 parts of a retarder and 6 to 26 parts of synthetic fiber. The cementing material is formed by mixing a cement component, a fly ash component and a silica fume component according to the mass ratio of (30: 16: 1)-(20: 26: 1). The super-early-strength jet high-ductility cement-based composite material has super-early-strength performance, tensile ductility and jettable performance, the preparation method is simple and efficient, a special process is not needed, and the composite material is particularly suitable for rapidly repairing structures with high requirements on construction time after being combined with a jet technology, and has good application prospects. The structure can be a bridge tunnel structure with traffic open time requirement or a maritime work structure with tidal range time requirement.

The present application relates to the field of new wall material preparation, in particular to a new wall material based on coal gangue and cement sintering and a preparation method thereof. The present application provides an innovative preparation method of coal gangue cement-based composite material. By introducing a new expanding agent and a mineral additive into the traditional cement-based composite material, the present application breaks through the limitations of the prior art and obtains a wall material with higher comprehensive performance and lower cost. The material is not only suitable for the construction industry, but also can be widely used in other fields, such as environmental protection and infrastructure construction.

The invention provides a multi-scale micro-nano powder composite rheological toughness double-effect modified composition and application thereof, and the double-effect modified composition is prepared from the following components in parts by weight: 20 to 30 parts of super-active mineral powder, 10 to 15 parts of super-fine beads, 10 to 15 parts of super-fine fly ash, 20 to 25 parts of super-fine limestone powder, 6 to 15 parts of high-activity rice hull ash, 0.4 to 0.8 part of nano material and 5 to 10 parts of inorganic crystallization inducer. And 11-15 parts of a toughness reinforcing agent. The multi-scale micro-nano powder composite rheological toughness double-effect modified composition provided by the invention can synergistically improve the rheological property and toughness of an ultrahigh-toughness cement-based composite material, and the components influence each other in collocation and have a synergistic effect, so that popularization and application of the high-performance cement-based composite material are facilitated, and the application prospect is wide. And the application scene and field are expanded.

The invention belongs to the technical field of thermal insulation materials, and relates to a cement aerogel-doped lightweight high-strength cement-based composite material and a preparation method thereof, and the material comprises the following components: cement aerogel powder, hollow glass beads, Portland cement, aluminate cement, silica fume, organic fibers, water and a water reducer in a mass ratio of (6-8): (20-30): (45-65): (2-4): (4-6): (2-3): (8-10): (0.5-1). The preparation method comprises the following steps: (1) preparing raw materials; (2) mixing and stirring; (3) molding by a hot-pressing method; and (4) curing and molding. According to the lightweight high-strength cement-based composite material doped with the cement aerogel prepared by the method, the cement aerogel powder and the lightweight cement-based matrix are cooperated, the performance advantages of the cement aerogel powder and the lightweight cement-based matrix are exerted, the specification requirements of diversified products can be met, and the application prospect is wide.

The invention discloses a method for co-processing waste incineration fly ash based on ultrafast carbon thermal reduction, organic solid wastes such as waste rubber and plastic are converted into graphene by utilizing high-voltage instantaneous current, and ultrafast carbon thermal reduction processing of the waste incineration fly ash is realized by utilizing excellent conductivity and reducibility of the graphene. According to the present invention, the waste incineration fly ash is subjected to detoxification so as to ensure the efficient and synchronous removal of the heavy metal and the dioxin in the waste incineration fly ash, the detoxified product is applied to the cement-based composite material so as to optimize the pore structure of the cement binder system and improve the hydration process, and the mechanical property of the building material product is improved, such that the harmless treatment and the resource utilization of the waste incineration fly ash are achieved. The material can be heated to over 3000 DEG C within an extremely short time, internal chemical bonds of the material in a non-equilibrium state are initiated to break and recombine, and evaporation removal of non-carbon elements such as heavy metal and thermal degradation of dioxin are promoted. And the environmental risk of the waste incineration fly ash is remarkably reduced, and co-treatment of the waste incineration fly ash, waste rubber and plastic and other high-carbon organic solid waste can be achieved.