339 results about "Expanded clay aggregate" patented technology

The invention discloses ceramsite lightweight aggregate structural concrete and a preparation method thereof, and belongs to the technical field of concrete. The ceramsite lightweight aggregate structural concrete is prepared from the following raw materials in parts by mass: 240 to 270 parts of cement, 25 to 35 parts of mineral powder, 80 to 95 parts of fly ash, 210 to 250 parts of coal gangue crushed materials, 725 to 805 parts of modified coal gangue ceramsite, 10 to 30 parts of waste rubber materials, 3.5 to 5 parts of water reducing agents and 165 to 180 parts of water. The modified coal gangue ceramsite is obtained by coating the surface of a coal gangue ceramsite matrix with an epoxy resin layer and then grafting a hydrophilic polymer, the porosity of the coal gangue ceramsite matrix is 40-60%, and the aperture ratio is 1.5-6%. The epoxy resin layer on the surface of the modified coal gangue ceramsite provides an anti-permeability barrier, the hydrophilic polymer on the surface adjusts the wettability of the ceramsite, the binding force with other components of the concrete is improved, and the concrete has excellent shrinkage and dry crack resistance.

The invention relates to the technical field of concrete, and particularly discloses high-strength low-heat-conductivity self-compacting concrete and a preparation method thereof. The high-strength low-heat-conductivity self-compacting concrete can maintain ideal strength performance while improving the heat insulation performance, so that the high-strength low-heat-conductivity self-compacting concrete is more suitable for being applied to occasions sensitive to temperature, such as underground spaces and external walls in severe cold areas. In addition, the ceramsite provided by the invention also provides a new consumption way for the vanadium slag, and can effectively realize recycling of wastes.

The invention discloses quick-hardening high-strength lightweight aggregate concrete, which is prepared from the following raw materials: ordinary Portland cement, quick-hardening sulphoaluminate cement, a mineral admixture, silica fume, ceramsite, river sand, water and an additive, and the additive is a mixture of a water reducing agent, a slump retaining agent, a retarder, a thickening agent and an air entraining agent; after the ceramsite absorbs water and is saturated, the surface of the ceramsite is coated with a cementing material, and the cementing material is hydrated to form a slurry shell; ordinary Portland cement and quick-hardening sulphoaluminate cement are compounded, mineral admixtures and silica fume are doped, the early strength of the lightweight aggregate concrete can be improved, meanwhile, the development of later strength is guaranteed, a layer of slurry'shell 'is formed on the surface of ceramsite through the hydration effect of the cementing material, and the surface of the ceramsite is wrapped by the composite cementing material. According to the ceramsite wrapped with the ash, firstly, the strength of the ceramsite can be improved, and then the strength of the concrete is improved; 2, the water absorption and water return phenomena of the ceramsite can be avoided; and thirdly, the floating phenomenon of the ceramsite can be improved.

The invention discloses a lightweight concrete safety energy storage cabinet and a preparation method thereof, and the lightweight concrete safety energy storage cabinet is obtained by injecting lightweight concrete into a mold and performing steam curing; the lightweight concrete is prepared from the following raw materials in parts by weight: 20 to 40 parts of cement, 8 to 20 parts of silica fume, 8 to 25 parts of slag powder, 0 to 10 parts of fine sand, 15 to 35 parts of lightweight fine ceramsite sand, 0 to 21 parts of coarse ceramsite sand with the particle size of 5 to 10 mm, 0 to 3 parts of steel fiber, 0 to 1.5 parts of PP fiber, 0.5 to 2.0 parts of polycarboxylic acid type water reducing agent, 0 to 14 parts of hollow glass beads, 0.1 to 0.5 part of release agent and water. Wherein the water-binder ratio is 0.15 to 0.22; the use amounts of the steel fibers and the PP fibers are not 0 at the same time; the light ceramsite sand and the coarse ceramsite sand are subjected to pre-wetting treatment before being used; the fireproof, explosion-proof and heat-insulating material has the characteristics of light weight, safety and impermeability, and has excellent fireproof, explosion-proof and heat-insulating properties.

This invention discloses a heat-insulating and heat-resistant shotcrete and its preparation method. This heat-insulating and heat-resistant shotcrete is composed of cement, modified silica mortar, modified heat-insulating ceramsite, fine aggregate, water, admixtures, and accelerators. In this invention, high-strength shale ceramsite with surface modification using hydrogel is introduced as a heat-insulating filler, significantly improving the dispersion and stability of lightweight aggregate in the mortar. It also possesses strong water absorption and slow-release capabilities and surface sealing functions, enabling it to provide pore insulation and internal curing through water storage and release in high-temperature environments. The addition of modified silica mortar, which effectively improves the high-temperature stability and density of the mortar hydration products, comprehensively enhances the homogeneity of the shotcrete mixture, the heat insulation performance of the hardened body, and the strength development and durability under high-temperature conditions. This effectively improves tunnel chamber temperature and extends the service life of the shotcrete under high-temperature conditions. The heat-insulating and heat-resistant shotcrete technology has a clear working mechanism, simple production process, and excellent performance. It is suitable for large-scale production and is of great significance for the high-quality construction of underground projects such as tunnels and mines in high-temperature and high-temperature water inrush environments.

The invention belongs to the technical field of concrete, and particularly relates to high-water-permeability recycled concrete. The concrete is prepared from 170 to 190 parts of water, 300 to 320 parts of cement, 90 to 120 parts of fly ash, 80 to 120 parts of silica fume, 90 to 110 parts of rice hull ash, 580 to 620 parts of medium sand, 430 to 470 parts of recycled fine aggregate, 1000 to 1100 parts of recycled coarse aggregate, 70 to 100 parts of ceramsite, 6 to 8 parts of a water reducing agent, 2 to 4 parts of an air entraining agent, 1 to 3 parts of a retarder, 110 to 130 parts of fly ash hollow microspheres, 70 to 90 parts of steel slag powder, 30 to 40 parts of silica sol, 20 to 30 parts of cellulosic fibers and 40 to 50 parts of an alkaline activator. 50-60 parts of an organic porous waste material; the composite material has abundant pore structures, strong water permeability, moderate strength, high resource utilization rate, outstanding environmental protection property and the like, improves the utilization rate of rainwater resources, and promotes continuous improvement of ecological environment.

The invention relates to the technical field of concrete, and particularly discloses a process for preparing high-performance concrete from artificial aggregate, which comprises the following steps: mixing sintered steel slag aggregate with the particle size of 5-20mm and regenerated fly ash ceramsite according to the mass ratio of 3: 1, carrying out infiltration treatment by using a silane coupling agent solution with the mass concentration of 8%, and drying in a vacuum environment at 60 DEG C until the water content is less than or equal to 0.5%; the preparation method comprises the following steps: mixing 42.5 R ordinary Portland cement, S95-grade superfine slag powder and silica fume according to a mass ratio of 6: 3: 1, and doping a polycarboxylate superplasticizer accounting for 0.8-1.2% of the mass of the cement and a graphene oxide nanosheet accounting for 0.05% of the mass of the cement; adding the pretreated artificial aggregate, the cementing material and the graded quartz sand into a planetary mixer according to the mass ratio of 1: 0.35: 0.6, adding the ice crumb phase change material modified water in three times, and controlling the discharge temperature of the freshly mixed concrete to be 5-8 DEG C; through the temperature control characteristic of the ice crumb phase change material and the multi-scale structural design of the artificial aggregate, the compactness of an interface transition area is enhanced, and microcrack initiation and propagation in freezing and thawing circulation are inhibited.

The invention provides straw fiber lightweight concrete and a preparation method thereof, and belongs to the field of building materials. The invention provides straw fiber lightweight concrete, which is prepared from the following preparation raw materials in parts by mass: 360 to 400 parts of cement; 40 to 60 parts of fly ash; 600 to 650 parts of a ceramsite filter material; 600 to 650 parts of sand; 150 to 170 parts of water; 1-3 parts of straw fiber; and 4-5 parts of a water reducing agent. The ceramsite filter material which is hard in surface and internally provided with a large number of micropores is used as the coarse aggregate, so that the lightweight effect is achieved; straw fibers are doped, agricultural waste is utilized, the production cost is reduced, and environmental pollution is reduced. The straw fiber lightweight concrete disclosed by the invention has relatively good compressive property and splitting tensile property, and the preparation method has a wide prospect.

The invention provides lightweight non-sintered ceramsite prepared from machine-made sand tailing mud as well as a preparation method and application of the lightweight non-sintered ceramsite, and relates to the field of lightweight building materials. The preparation method comprises the following steps: weighing the following raw materials in parts by weight: 50-65 parts of machine-made sand tailing mud, 35-50 parts of fly ash, 10-25 parts of cement, 16-19 parts of quick lime, 1-4 parts of ammonium carbonate and 12-18 parts of water; the method comprises the following steps: dehydrating and crushing the machine-made sand tailing mud, and stirring and mixing the materials in a round pot granulator to obtain an unfired ceramsite mixture; spraying the sodium silicate solution into a granulator at a constant speed to obtain spherical particles; and curing to obtain the light non-sintered ceramsite. The quick lime is used for pretreating the machine-made sand tailing mud, the water content of the machine-made sand tailing mud can be reduced, the machine-made sand tailing mud is successfully granulated, the strength of the ceramsite can be effectively improved, meanwhile, the ceramsite is combined with sodium silicate for alkali excitation, ammonium carbonate is used for foaming, preparation is simple, energy consumption is low, the solid waste utilization rate is high, and economic benefits are remarkable.

The invention provides solid-waste-based phase-change energy-storage lightweight aggregate applied to marine concrete and a preparation method of the solid-waste-based phase-change energy-storage lightweight aggregate, and belongs to the technical field of building materials. According to the invention, solid wastes such as coal gangue and fly ash are adopted as raw materials to prepare the ceramsite, and the ratio and firing conditions of the raw materials such as coal gangue and fly ash are adjusted to improve the mechanical properties such as mechanical strength and adhesive property of the ceramsite, so that the ceramsite is more suitable for marine concrete; and then liquid paraffin is injected into the ceramsite in a vacuum impregnation manner, so that the frost heaving resistance, temperature stress resistance and impact resistance of the marine concrete can be remarkably improved. Through three core innovations of solid waste resource utilization, lightweight high-strength aggregate preparation and phase change energy storage function integration, the problems of single material performance, high process consumption, low efficiency, insufficient function integration and the like in the prior art are systematically solved.

The invention relates to the technical field of concrete, in particular to environment-friendly lightweight aggregate concrete and a preparation method thereof. The environment-friendly lightweight aggregate concrete provided by the invention comprises the following raw materials in parts by weight: 60-70 parts of cement; 15 to 25 parts of modified glass micro powder; 15 to 25 parts of fly ash; 80 to 120 parts of waste brick recycled aggregate; 20 to 40 parts of ceramsite; 0.18 to 0.54 part of waste polypropylene fiber; 25-35 parts of water and 0.9-2.1 parts of a water reducing agent. According to the environment-friendly lightweight aggregate concrete provided by the invention, the modified glass micropowder and the waste polypropylene fiber are added into an original concrete formula, so that the strength and durability of the concrete are improved, and efficient synergistic utilization of three types of construction wastes (waste bricks, glass and polypropylene) can be realized.

The present invention provides a composite gasification device based on a filtration combustion mode, belonging to the technical field of solid fuel gasification for producing synthesis gas. It solves the problems of low carbon conversion efficiency, high tar content, and low synthesis gas yield. It includes a gasifying agent inlet, a preheating section, a reaction section, a reforming section, a synthesis gas outlet, and a discharging section. The gasifying agent inlet is communicated with the preheating section. Both ends of the reaction section are respectively communicated with the preheating section and the reforming section. The synthesis gas outlet is communicated with the reforming section. The discharging section is communicated with the reaction section. Both the preheating section and the reforming section are composed of various forms of inert porous medium fillers. The internal of the porous medium packed bed has complex pore channels, which is beneficial to mass transfer and heat transfer. The porous medium can be composed of inert particles such as ceramsite or glass microspheres and similar substances, wire meshes, and foam ceramics, etc. It is mainly used for the efficient gasification of various solid fuels.

The invention provides a ceramsite proppant as well as a preparation method and application thereof. The method comprises the following steps: grinding a coal gangue raw material, pre-sintering, cooling and then grinding again; grinding the tungsten tailing sand, the low-grade bauxite, the carbide slag and the clay; grinding after mixing the raw materials; the raw materials comprise 45-60 parts of low-grade bauxite, 20-35 parts of pre-sintered coal gangue, 15-20 parts of tungsten tailing sand, 1-5 parts of carbide slag and 7-14 parts of clay; the total amount of the low-grade bauxite, the pre-sintered coal gangue and the tungsten tailing sand is 100 parts; granulating and drying; carrying out first sintering at 800-950 DEG C; second sintering is conducted at the temperature of 1050-1200 DEG C; and naturally cooling to obtain the ceramsite proppant. The technical problem to be solved is how to realize high-valued utilization of mine solid waste and low-grade bauxite, reduce dependence on high-quality bauxite and production cost, reduce sintering energy consumption and carbon emission, reduce product body density and improve key performance such as strength and sphericity of the proppant by optimizing raw material combination and a preparation process. And the requirements of oil and gas field fracturing operation are met.

The invention relates to high-strength lightweight concrete and a preparation method thereof, and belongs to the technical field of concrete. The lightweight high-strength concrete is prepared from the following components: 300 to 340 parts of slag cement, 250 to 280 parts of expanded perlite micro powder, 10 to 15 parts of modified ceramsite, 20 to 30 parts of polypropylene fiber, 60 to 100 parts of silica fume, 10 to 15 parts of a water reducing agent, 3 to 7 parts of a foaming agent and 220 to 300 parts of water. The lightweight high-strength concrete prepared in the invention ensures the lightweight of the concrete, and the mechanical strength of the lightweight concrete is significantly improved at the same time.

The invention relates to the technical field of oil and gas exploitation, discloses a low-density high-strength ceramsite proppant as well as a preparation process and application thereof, and aims to solve the technical problem that the density and the strength of an existing ceramsite proppant are mutually restricted. The proppant has a core-shell structure with an inner core and an outer shell. The inner core is formed by sintering a first material containing bauxite, clay, a composite pore-forming agent and a carbon-silicon precursor and is used for forming a loose and porous low-density structure, and silicon carbide whiskers are generated in situ in the loose and porous low-density structure for reinforcement. The shell is formed by sintering a second material containing bauxite, clay and zircon sand and is used for forming a compact and high-strength protective layer and generating zirconium oxide particles in situ in the protective layer for toughening. The preparation process comprises the following steps: preparing core-shell structure green pellets by a two-step method, and adopting a double-atmosphere program temperature control sintering process of medium-temperature reduction and high-temperature oxidation. According to the invention, through the combination of the structure zoning and the zoning in-situ enhancement technology, the prepared proppant has ultralow density and excellent crushing resistance.

The invention relates to the field of building materials, in particular to a preparation method of high-strength ceramsite, which comprises the following steps: uniformly mixing brick powder, Bayer process red mud, ardealite and titanium gypsum to obtain mixed powder, adding a binder, uniformly mixing to prepare raw nodules, sequentially forming a transition layer and a shell layer on the surfaces of the raw nodules, drying, sintering and cooling to obtain the high-strength ceramsite. The prepared ceramsite is low in water absorption rate and excellent in mechanical strength, the core-shell structure can effectively inhibit release of chloride ions, solid waste is fully utilized, environmental pressure is relieved, waste is turned into wealth, two purposes are achieved, and the ceramsite has certain social, economic and ecological benefits.

The invention relates to an assembly type fused salt storage tank foundation and a construction method thereof. The foundation comprises a gravel layer, a ceramsite soil filling layer, a composite heat preservation layer, a leakproof steel plate assembly, a quartz sand cushion layer and a heat-resistant concrete ring wall surrounding the gravel layer, the ceramsite soil filling layer, the composite heat preservation layer, the leakproof steel plate assembly and the quartz sand cushion layer from bottom to top in sequence. Wherein the heat-resistant concrete ring wall is formed by splicing a plurality of prefabricated modules and is arranged on the gravel layer; a temperature measuring thermocouple assembly is further arranged in the leakage-proof steel plate assembly and used for detecting temperature changes. A steel fiber concrete layer and a refractory brick layer are sequentially arranged above the anti-leakage steel plate assembly and correspond to the lower portion of the molten salt storage tank wall plate. According to the heat-resistant concrete ring wall, the adopted prefabricated modules are rapid in installation and short in maintenance period, so that the construction period is short, the construction efficiency is greatly improved, the leakage detection system is arranged, leakage can be found in time, the accident treatment cost is effectively reduced, and the annual maintenance cost is reduced by 20-30%; therefore, the installation cost and the maintenance cost are greatly reduced.

The present invention relates to the technical field of attapulgite refractory ceramsite, specifically a attapulgite refractory ceramsite: comprising the following raw materials by weight: 60 to 80 parts of blast furnace slag powder, 60 to 80 parts of kaolin, 40 to 60 parts of attapulgite clay powder, 30 to 40 parts of filler, 20 to 30 parts of coal gangue powder, 10 to 20 parts of feldspar powder, and 4 to 6 parts of binder. In the present invention, the porous and lightweight material of expanded perlite powder is utilized, and after surface treatment with sodium hydroxide, its specific surface area is increased, and subsequent reaction activity is enhanced. By adding 3-aminopropyltriethoxysilane and methyltrimethoxysilane, a hybrid layer can be formed on the surface of the expanded perlite, improving the interface bonding force with other components. The addition of nano-silica can fill the pores for structural reinforcement, improve the density and bonding tightness of the material, and effectively improve the high temperature resistance and strength performance of the attapulgite refractory ceramsite.

The utility model belongs to the field of sponge city construction, and particularly relates to a rainwater garden system for sponge city construction, a permeation area in a foundation pit of the rainwater garden system sequentially comprises a water storage layer, a covering layer, a planting soil layer, an artificial filler layer, a sand layer and a gravel layer from top to bottom, and the high porosity of water storage ceramsite is utilized, so that the water purification and storage performance is good; through mutual cooperation of all the layers, rainwater is effectively purified and stored, and the water quality and the water storage amount of the rainwater garden system are improved. In addition, the rainwater garden system is simple in structure and convenient to construct and maintain in the later period.

The invention discloses a lightweight high-strength concrete thermal insulation wallboard for a high-rise building and a preparation method of the lightweight high-strength concrete thermal insulation wallboard. The lightweight high-strength concrete thermal insulation wallboard comprises the following raw materials in parts by weight: 300-500 parts of cement, 60-90 parts of slag powder, 60-100 parts of silica fume, 60-90 parts of microbeads, 100-200 parts of floating beads, 500-900 parts of modified lightweight aggregate, 15-20 parts of alkali-resistant glass fibers, 25-40 parts of a water reducing agent and 180-220 parts of water. According to the invention, a layer of'hard shell 'is formed on the surface after the shale ceramsite is wrapped and reinforced by the light cement paste, the problem of high water absorption rate of the shale ceramsite is improved, meanwhile, the mechanical property of the shale ceramsite is improved, secondly, the self-made lightweight aggregate is low in water absorption rate and high in strength, the density of the self-made lightweight aggregate is close to that of a gelling matrix of the thermal insulation wallboard, and the aggregate can be prevented from floating or sinking; the floating beads are added into the modified lightweight aggregate, so that the prepared lightweight wallboard is good in homogeneity, low in water absorption and good in mechanical property, the weight of the wallboard can be reduced through cooperation of the floating beads in the thermal insulation wallboard and the modified lightweight aggregate, meanwhile, the floating beads have excellent fire resistance and heat insulation performance, and the heat insulation and fire resistance of the lightweight wallboard can be improved through cooperation of the floating beads and the alkali-resistant glass fibers with the high melting temperature.

The application discloses a kind of regenerated spherical ceramsite sand and its preparation process, sand blasting process, and relates to the field of metal surface treatment.It includes the following steps: the recyclable abrasive is prepared by sintering process to regenerate spherical ceramsite sand;The recyclable abrasive is obtained by sorting method from sandblasting abrasive.Through multi-stage sand blasting method to workpiece sand blasting treatment, including the following contents: first stage, 0.6~0.8MPa pressure, 60~75° incident angle is carried out rough spraying;Second stage, 0.3~0.5MPa pressure, 75~85° incident angle is carried out fine spraying;Third stage 0.1~0.2MPa pressure, 85~90° incident angle is carried out fine adjustment.The application realizes the efficient resource utilization of waste abrasive by efficient recovery sorting and internal regeneration cycle, solves the environmental pollution problem caused by waste abrasive stockpiling and disposal;Multi-stage sand blasting process avoids excessive treatment and repeated operation, and the optimized abrasive combination and dynamic sand blasting parameters ensure the high uniformity and controllability of workpiece surface cleanliness and roughness.

The application provides a kind of stack type light weight high strength concrete material and its preparation method.The application is filled in the mold by stacking ceramsite, and the ceramsite fills the mold in a close-packed manner;Then, according to the preset weight fraction, the cement, silica fume, saw mud, fly ash floating bead, hollow glass microsphere, fly ash, water reducing agent and water are weighed, and the high fluid light weight high strength mortar is obtained after fully mixing, and it is poured into the mold filled with ceramsite, so that the high fluid light weight high strength mortar fills the gap between the ceramsite, and the light weight high strength concrete material is obtained after curing. Through the above-mentioned manner, the application can prepare the high fluid light weight high strength mortar with slightly lower density than the ceramsite, to ensure that the pouring process will not appear the phenomenon of ceramsite floating, and effectively utilize the space skeleton formed by the mutual lap of ceramsite in the stacking process to effectively improve the strength of the concrete, so that the prepared stack type light weight high strength concrete material has low bulk density and high strength.

The utility model discloses a heat-insulating hollow block brick, which relates to building materials and is characterized by comprising a block, an agent injection cavity communicated with the top surface and the bottom surface of the block is arranged in the block, and a foaming adhesive layer formed by expansion and solidification of a foaming agent is filled in the agent injection cavity. Tangent planes which are respectively flush with the top surface and the bottom surface of the building block are arranged on the top surface and the bottom surface of the polystyrene foam layer. The connection strength between the polystyrene foam layer and the building block is sufficient, the production cost is low, the building block is a light aggregate concrete building block and is prepared from light coarse aggregate (ceramsite), common sand, cement and water, the light aggregate concrete has the characteristics of light dead weight, high strength, heat preservation, heat insulation, shock resistance, permeability resistance and the like, and compared with common concrete with the same grade, the building block has the advantages of being light in weight, high in strength, good in heat preservation and heat insulation performance and the like. The self weight can be reduced by more than 20-30%, so that the building block has the characteristics of light self weight, heat preservation, heat insulation, good fire resistance and the like.

The application provides a water-permeable asphalt composition and a preparation method thereof, and the composition comprises the following components and mass fractions: 22-28 parts of base asphalt, 65-75 parts of modified composite aggregate, 3-4 parts of interface reinforcing agent, 1-2 parts of nano anti-aging agent, and 0.3-0.5 parts of antioxidant dibutyl hydroxytoluene, wherein the modified composite aggregate is compounded by basalt coarse aggregate, ceramsite fine aggregate and recycled glass microbeads at a mass ratio of 5-7:3-5:1. Through the synergistic effect of the multistage aggregate compounding system, the bio-based interface reinforcing technology and the nano drug-loaded anti-aging process, the mechanical strength and durability are significantly improved while the high water permeability is maintained, and the low-temperature modification and solid waste recycling technology are used to realize the environment-friendly and low-consumption production.

A fair-faced concrete for a power plant chimney and its preparation method belong to the technical field of concrete materials. The present invention aims to provide a fair-faced concrete for a power plant chimney and its preparation method that can meet special performance requirements such as high temperature resistance and corrosion resistance, and at the same time have good appearance quality and self-cleaning ability. Each cubic meter of the fair-faced concrete for a power plant chimney in the present invention includes the following components: cement: 285 - 305 kg, fly ash: 40 - 50 kg, metakaolin: 25 - 35 kg, coarse aggregate: 931 - 961 kg, manufactured sand: 740 - 780 kg, shale ceramsite: 40 - 60 kg, polydimethylsiloxane emulsion: 3.7 - 5.6 kg, water reducer: 4.1 - 4.5 kg, mixing water: 152 - 155 kg. The preparation method includes: soaking the shale ceramsite in a TiO2 suspension with a concentration of 9 g / L for 24 h and then taking it out and draining; first adding the cementitious material, metakaolin and part of the mixing water and stirring; then adding the shale ceramsite and the coarse aggregate and stirring; finally adding the manufactured sand, the remaining mixing water, the polydimethylsiloxane emulsion and the water reducer, and fully stirring to obtain a concrete mixture.

The invention relates to the field of building materials, in particular to SAP functional aggregate for concrete, a preparation method of the SAP functional aggregate and a preparation method of the concrete. The SAP functional aggregate for concrete comprises coal gangue ceramsite, the coal gangue ceramsite comprises a ceramsite core with a porous structure, SAP particles are adsorbed on the ceramsite core, the periphery of the coal gangue ceramsite is coated with a packaging film, and a composite polymer is formed by mixing polyvinyl alcohol and epoxy resin. The coal gangue ceramsite with a porous structure is used as a core for absorbing SAP particles, and then the water absorption rate is limited through a packaging film; when the functional aggregate is used in concrete, the packaging film realizes slow and controllable release of water, the hydration process is physically regulated and controlled, and a heat release curve is slowed down; the problems that in the prior art, the SAP is directly added into the concrete, so that the SAP rapidly absorbs a large amount of water, and consequently the workability of the concrete is lost, and the mechanical property is degraded are solved.

The invention discloses silica fume reinforced unfired solid sulfur ash ceramsite and a preparation method thereof. The silica fume enhanced unfired fluidized bed combustion ash ceramsite is prepared from the following raw materials in percentage by mass: 55 to 65 percent of fluidized bed combustion ash, 2 to 8 percent of lime, 2 to 5 percent of desulfurized gypsum, 5 to 10 percent of silica fume, 16 to 25 percent of cement clinker and 8 to 12 percent of water. The preparation method of the silica fume enhanced unfired solid sulfur ash ceramsite comprises the following steps: pretreating the raw materials, metering the raw materials, mixing and homogenizing, granulating and balling with a balling disc, standing, curing with steam and screening. The cylinder compressive strength of the prepared silica fume reinforced unfired solid sulfur ash ceramsite can reach 11.7-16.1 MPa, and the 1h water absorption rate is 3%-8%. According to the silica fume enhanced unfired solid sulfur ash ceramsite, the silica fume and the cement clinker are used for synergistically improving the early strength, the problem that the ceramsite is broken due to insufficient cylinder compressive strength caused by unstable activity of the solid sulfur ash is solved, meanwhile, the reaction process is accelerated by adopting a steam curing method, and the production period is shortened. The ceramsite can realize large-scale resource utilization of the fluidized bed combustion ash, the production period is short, and the prepared ceramsite has the characteristics of light weight, high strength and low water absorption and has good economic and social benefits.

The invention relates to an airport pavement autoclaved ceramsite lightweight aggregate concrete mix proportion design method, and belongs to the technical field of road engineering materials. Comprising the following steps: preparing and pretreating test raw materials; designing a mix proportion; carrying out laboratory preparation; curing the concrete member; and measuring the original performance. Multi-source data are analyzed through intelligent means in combination with conditions such as environment, load and application, the material component proportion is dynamically optimized, and the composite mix proportion design method is formed. The problems that an existing airport pavement is large in thickness, large in resource consumption, low in field construction efficiency, poor in quality, single in pavement material design optimization and the like are solved.

The utility model discloses integrated mould pressing assembly type graded filtration sewage purification tank, including the sedimentation tank, ecological purification tank and filter tank that are connected in proper order through splicing component, the sedimentation tank, ecological purification tank and filter tank are connected in proper order through the pipeline and are led on between, ecological purification tank inside swing joint has the filler box, and the filler box is filled with coarse sand, ceramic granule and gravel from top to bottom in proper order inside, the filter tank inside swing joint has the hollow fiber membrane and reverse osmosis membrane, the utility model discloses structure design is reasonable, and the convenient nature of assembly of the tank body structure of splicing type has been effectively improved to sewage purification tank, has also reduced the use and maintenance cost of purification tank simultaneously, and further improved sewage filtration processing efficiency.