585 results about "Foam concrete" patented technology

The invention discloses a fiber foamed concrete and a preparation method thereof. The fiber foamed concrete comprises the following raw materials in parts by weight: 5290 parts of cement, 4965 parts of water, 1.361 part of foaming solution, 1.2964 part of fly ash and 10 parts of fiber. The preparation method comprises the following steps: proportionally weighing the components; sequentially adding the cement and fly ash into a stirrer, proportionally weighing the water, uniformly stirring the mixture by the stirrer, and adding the fiber; preparing and adding the foaming solution; gradually adding the foam into the mixture, and continuously stirring until all the components are uniformly mixed; pouring the mixture into a mold on which lubricating oil is brushed, and curing in a curing chamber; after 24 hours, removing the mold; and respectively curing for 3 days, 7 days and 28 days for experimental detection. The fiber foamed concrete has the advantages of favorable thermal insulation property, favorable compression resistance and favorable bending resistance, and is applicable to a railway bed strengthening layer.

The invention discloses a foam concrete image processing method based on sub-pixel edge reconstruction, and particularly relates to the field of foam concrete image processing.The method comprises the steps that an image of foam concrete is obtained, and a boundary response feature set containing edge direction information, edge gradient change information and local intensity comparison information is extracted; performing edge structure classification on the image region based on boundary response feature set combined threshold judgment; and aiming at the image region which is judged to be the local direction convergence mutation region, identifying a cross mutation point set by fitting a direction tensor convergence trend, and executing directionally-guided corrosion and expansion image processing. By constructing a structure judgment variable based on image boundary response characteristics and guiding a corrosion expansion path and a vein backtracking path to execute sub-pixel-level aperture boundary separation, image structure processing and contour reconstruction of a porous adhesion area are realized.

The invention discloses a multi-source data fusion foam concrete construction process monitoring method and system, and relates to the technical field of concrete construction, the method comprises the following steps: obtaining a standard response data set of foam concrete, including raw material ratio parameters and performance index parameters which are stored in an associated manner; constructing and training a hybrid hierarchical performance prediction model, wherein the model comprises a shared prediction layer based on integrated learning and a plurality of independent output layers connected with the shared prediction layer; in combination with a multi-objective optimization algorithm, by taking compressive strength and cost optimization as an objective, constructing an evaluation function for global optimization, and obtaining a target mix proportion scheme; acquiring real-time process data associated with the target mix proportion scheme, and inputting the real-time process data into the mixing layering performance prediction model to obtain a prediction result; and comparing with a preset design target, and generating an adjustment instruction for adjusting the matching parameters of the subsequent stirring batches. The problem that in the prior art, the performance fluctuation of foam concrete of different batches is large due to the fact that the construction condition cannot be dynamically adjusted in real time is solved.

The invention relates to the technical field of concrete, and particularly discloses ultralow-density foam concrete and a preparation method thereof. The ultralow-density foam concrete is prepared from the following raw materials in parts by weight: 35 to 60 parts of cement, 15 to 25 parts of steel slag, 8 to 15 parts of lightweight aggregate, 1 to 3 parts of reinforced fiber, 0.5 to 1 part of a foaming agent, 0.1 to 0.3 part of a stabilizer, 0.3 to 0.5 part of a foaming aid and 30 to 70 parts of water, the foaming aid is at least one of aluminum powder, silica fume, calcium stearate and triethanolamine, and the foaming agent is one of an animal protein foaming agent and a rosin foaming agent; the foaming agent and the foaming aid are combined, a stable foam structure is formed in a concrete system, meanwhile, the phenomena of foam merging and foam breaking are reduced, formation of communicating holes is reduced while the foam hole structure is refined, the stability of foam concrete bubbles is improved, and foam collapse is reduced.

The invention discloses thermal insulation concrete and a preparation method thereof, and relates to the technical field of lightweight concrete. The preparation method comprises the following steps: firstly, depositing a carbon nano tube through a plasma enhanced chemical vapor deposition method, and optimizing the adhesive force of the carbon nano tube on the surface of basalt fiber; meanwhile, spraying citric acid is introduced and then reacts with urea to generate carbon quantum dots in high-temperature microwaves to form an uneven interface, particles are tightly combined and are not prone to falling off, the heat transfer efficiency is improved, and the heat preservation performance and the mechanical performance are improved; secondly, by utilizing the hydrophobicity of the modified nano silicon dioxide, the foam size is refined, and pores and nodes in a foam concrete net structure are filled; then, the modified basalt fibers, phenolic resin and a foam concrete system are compounded to form a three-dimensional structure, pores are filled, communicating pores before and after hardening are reduced, and the thermal insulation performance and the mechanical performance of foam concrete are both considered. The foam concrete prepared by the invention has the effects of heat preservation, heat insulation and high mechanical property.

The invention discloses a CO2 inflation foaming preparation method of a ternary solid waste foam cement thermal insulation material, which comprises the following steps: step 1, weighing desulfurized gypsum, fly ash, mineral powder and an additive, and uniformly stirring for later use; step 2, weighing water with required weight, and uniformly stirring the uniformly mixed dry material and water to form uniform slurry; step 3, stirring the uniform slurry at a high speed, and filling CO2 gas while stirring, so as to prepare inflatable foaming slurry; step 4, pouring the inflatable foaming slurry into a mold, weighing a sample, loading the sample into a self-sealing bag, sealing, and curing in a natural environment; and step 5, after curing to the age, taking out the sample, and drying to constant weight to prepare the ternary solid waste foam cement thermal insulation material. The ternary solid waste foamed cement thermal insulation material which takes CO2 as foaming gas, the desulfurized gypsum as a main cementing material and the fly ash and the mineral powder as auxiliary cementing materials is prepared, and meets the A08 grade requirement specified by the standard of foam concrete.

The invention provides a high and steep slope reinforcing system with a slope crest adjacent to a post-built municipal pipe gallery and a construction method of the high and steep slope reinforcing system. The reinforcing system comprises an original side slope lattice anchor supporting structure, a pipe gallery structure, a foam concrete backfill structure located on the side, close to the original side slope surface, of the pipe gallery structure, a row of newly-added anchor rods / cables constructed below the first row of original anchor rods / cables below the slope top, and a row of miniature steel pipe piles constructed below the outer side, close to the side slope surface, of the pipe gallery structure. A first row of anchor rods (cables) of an original removed side slope support are replaced by newly added anchor rods or anchor cables, and the whole steel pipe piles are located in the foam concrete to form a miniature pile retaining wall structure. The overall stability of the high and steep slope with the slope crest adjacent to the pipe gallery is greatly improved, and displacement of the slope crest adjacent to the pipe gallery is effectively controlled; the settlement of the slope crest adjacent to the pipe gallery is effectively controlled in a design and standard range; meanwhile, the foam concrete structure is used for filling the pipe ditch (groove), so that filling pressure can be reduced, and compactness and strength are guaranteed.

The invention relates to solid waste-based self-excitation foam concrete which is characterized by comprising the following raw materials in parts by mass: 1-2 parts of a composite foaming agent, 40-60 parts of a composite precursor, 40-60 parts of an alkaline excitation material, 0.1-0.2 part of polypropylene fiber and water, and the mass ratio of water to glue is 0.45-0.55. The mineral activity of the waste incineration bottom slag, the fly ash and the granulated blast furnace slag powder is excited through the solid waste-based alkaline exciting agent, the compressive strength of the material is remarkably improved by adding the polypropylene fiber, the dry density and the heat conductivity coefficient meet expected requirements, the cost is saved, energy is saved, the environment is protected, and a new direction is provided for recycling application of industrial solid waste.

The invention discloses a UHPC-foam concrete composite material with a sandwich structure and a preparation method of the UHPC-foam concrete composite material. The composite material comprises two ultra-high performance concrete (UHPC) panel layers, a foam concrete sandwich layer of a negative Poisson's ratio three-dimensional framework prepared through a photocuring three-dimensional printing technology is arranged between the two ultra-high performance concrete (UHPC) panel layers, and the three-dimensional framework is of an inward-concave honeycomb topological structure and has the characteristic of transverse expansion after being pressed; impact stress can be effectively dispersed, and a dual energy dissipation path is formed through a synergistic effect with a porous energy absorption mechanism of the foam concrete. The panel layer and the sandwich layer are combined through a layered pouring process, and an interface is subjected to scabbling treatment so as to enhance the bonding strength. The composite material is superior to a traditional material in the aspects of compressive strength and energy absorption performance, is suitable for the fields of anti-explosion buildings, military protection engineering, frontier defense facilities and the like, and has a wide application prospect.

A phase-change heat-storage foamed concrete, and a preparation method and use thereof are provided. The phase-change heat-storage foamed concrete provided by the present disclosure is prepared from raw materials including, in percentages by mass: 50-70% of a cement, 2-20% of a supported phase-change material, 15-35% of water, 0.1-0.5% of a water-reducing agent, 0.5-1.5% of a foam stabilizing agent, 0.5-2% of an aqueous hydrogen peroxide solution, and 0.1-0.4% of a hydrogen peroxide decomposition catalyst. The supported phase-change material includes an acid-modified fly ash and a paraffin supported on a surface and in a pore structure of the acid-modified fly ash, and the aqueous hydrogen peroxide solution has a mass percentage concentration of 25-30%.

The invention provides a fire coal bottom ash-based low-shrinkage foam concrete material based on fluidity control as well as a preparation method and application of the fire coal bottom ash-based low-shrinkage foam concrete material. According to the invention, the proportioning water consumption under different coal-fired bottom ash mixing amounts is accurately calculated through a water consumption calculation formula, and the foam concrete material is prepared by combining aggregate grain composition regulation and control. The foam concrete material provided by the invention not only has the characteristics of low drying shrinkage, sound absorption, heat insulation, light weight, high strength, low cost, wide application range and the like, but also fully utilizes bulk solid wastes such as coal-fired bottom ash and the like, and adopts the coal-fired bottom ash to replace sand aggregate, so that the use amount of sand is greatly reduced, the exploitation of natural resources is reduced, the construction cost is reduced, and the environmental pollution is reduced. And the economic value is improved.

The invention discloses low-carbon red-mud-based alkali-activated foam concrete and a preparation method thereof, and belongs to the field of low-carbon foam concrete. Specifically, the mix proportion and the preparation method of the low-carbon red-mud-based alkali-activated foam concrete are as follows: P.O42.5 ordinary Portland cement provided by building materials in Qingdao Weidong macro, the I-grade fly ash is S95-grade granulated blast-furnace slag produced by Henan Province Platinon Casting Material Co., Ltd., and Jinshu New Material Co., Ltd., the I-grade fly ash is S95-grade granulated blast-furnace slag produced by Henan Province Platinon Casting Material Co., Ltd. The Bayer process red mud powder is produced by Hebei Province Shihozhuangfei Mine Product Co., Ltd. The exciting agent is selected from an industrial liquid sodium silicate solution produced by Henan Jinmoistening New Material Co., Ltd. And solid sodium hydroxide particles with AR analytical purity of 96%; the admixture is selected from a TR-26C type polycarboxylate superplasticizer produced by Henan Fuhua Information Science and Technology Co., Ltd. And the foaming agent is a TR-E type animal protein foaming agent produced by Henan Zhuichun Information Science and Technology Co., Ltd. Compared with existing foam concrete, the low-carbon alkali-activated foam concrete provided by the invention uses a large amount of industrial solid waste, reduces the use cost, reduces the use amount of cement under the condition of ensuring the compressive strength, and is simple and convenient to operate, reasonable in process, low-carbon, environment-friendly, rapid in cement setting and hardening, and suitable for large-scale use.

The invention relates to the technical field of building materials, in particular to alkali-activated bentonite slurry and steel slag foam concrete and a preparation method thereof. The alkali-activated bentonite slurry steel slag foam concrete is prepared from the following raw materials in parts by mass: 400 to 440 parts of cement, 25 to 60 parts of expansive soil slurry, 55 to 60 parts of mineral powder, 25 to 30 parts of steel slag powder, 0.8 to 1 part of alkali, 25 to 30 parts of manganese tailings, 260 to 265 parts of water and 30 to 32 parts of foam. The manganese tailings, the steel slag powder and the mineral powder belong to bulk industrial solid wastes, and the bulk industrial solid wastes of the prepared foam concrete account for 25-30%, so that the cement consumption is saved, and the cost is further saved.

The invention discloses a fly ash lightweight concrete material and a preparation method thereof, and belongs to the technical field of lightweight concrete materials. The concrete is prepared from the following raw materials in parts by weight: 75 to 90 parts of activated fly ash system, 15 to 20 parts of gel material, 13 to 20 parts of lightweight aggregate, 0.85 to 2.4 parts of foaming system and 0.75 to 1.6 parts of functional additive. The fly ash is effectively activated, so that the overall performance of the foam concrete is integrally improved, more importantly, the fly ash is used as industrial waste in the light foam concrete, resource recycling is achieved, dependence on natural resources is reduced, the cost of raw materials is reduced, and the utilization rate of the fly ash in the light foam concrete is increased. Carbon dioxide emission in the cement production process can be reduced, so that energy conservation and emission reduction are realized.

The utility model provides a tunnel inverted arch structure which comprises a corrugated steel plate layer, a secondary lining layer, a frame column layer and a pavement layer which are sequentially arranged from bottom to top, and the corrugated steel plate layer is provided with a grouting hole and an anchor rod hole for a system anchor rod to penetrate through. Foam concrete is injected into an interlayer space between the corrugated steel plate layer and the surrounding rock through the grouting holes to form a foam concrete layer, the system anchor rod comprises an anchoring end and a locking end which are oppositely arranged in the extending direction of the system anchor rod, the anchoring end penetrates through the anchor rod hole to be anchored into the surrounding rock, and the locking end is connected with the corrugated steel plate layer. The secondary lining layer is arranged on the inner wall of the corrugated steel plate layer, the bottom of the frame column layer is pre-buried in the secondary lining layer, and the pavement layer is laid on the top of the frame column layer. According to the novel inverted arch structure, particularly, a traditional inverted arch backfilling layer is arranged to be of a frame layer structure, the use amount of concrete can be greatly reduced, the safety and stability of a tunnel are guaranteed, meanwhile, the material cost and the construction cost are reduced, and economic benefits are improved.

A method of preparation of a foamed concrete, comprising the steps of; providing a cementitious slurry, comprising in wt% relative to the wt of the slurry, 60-70% of a cementitious material, 0.5-5% in

The invention relates to the field of construction tools, in particular to light foam concrete pouring and conveying equipment which structurally comprises a base, a horizontally-arranged discharging device is arranged at the top of the base, an upper cover plate is installed on the upper surface of the discharging device, a feeding pipe is arranged on one side of the upper cover plate, and the discharging device comprises a guide pipe and a buffer. The buffer is connected with a feeding hopper, the feeding hopper and a bottom pipe at the bottom form a groove body, a rotary feeding rod is arranged in the buffer and the bottom pipe, the feeding rod is connected with a driving motor main shaft installed outside the feeding hopper, the synchronous motor drives the middle pipe to rotate, and the synchronous motor is electrically connected with a driving motor main board. The long-distance conveying capacity of foam concrete is achieved, defoaming in the start-stop process is greatly reduced, the effective pushing torque of the feeding rod is concentrated in the axial conveying direction by means of the segmented design of the pre-conveying section and the conveying section of the feeding rod and the radial limiting effect of the buffer, radial overflow of materials is restrained, and damage to foam caused by radial shearing is reduced.

The invention relates to the technical field of concrete preparation, and particularly discloses foam concrete with good durability and a preparation method thereof. The invention discloses foam concrete with good durability. The foam concrete is prepared from the following raw materials in parts by mass: 90 to 120 parts of cement, 40 to 60 parts of fly ash, 30 to 55 parts of regenerated rubber powder, 2.7 to 3.5 parts of fiber, 2 to 4 parts of sodium carboxymethyl starch, 0.2 to 0.4 part of inulin, 0.7 to 1 part of foaming agent, 0.43 to 0.92 part of water reducing agent and 63 to 86 parts of water. The foam concrete provided by the invention has good mechanical properties, working performance and durability.

The utility model provides an air bag device for construction of a cross-fault tunnel foam concrete buffer layer. The air bag device comprises an inflatable flexible air bag, a first annular closed steel formwork and a second annular closed steel formwork. The first annular closed steel formwork and the second annular closed steel formwork are arranged at the two ends of the inflatable flexible air bag. An inflation connector is arranged at one end of the inflatable flexible air bag, and a first filling pipeline and a second filling pipeline are arranged on the first annular closed steel formwork and the second annular closed steel formwork. The construction efficiency is remarkably improved on the premise of not losing the shock absorption and isolation performance of the foam concrete, one-time forming is achieved, the construction quality is guaranteed, and the cost is saved; in addition, due to the reusable characteristic of the air bag device, the construction cost is further reduced, and the problems that in a traditional construction method, efficiency is low, the seismic mitigation and isolation performance of the expanded excavation section foam concrete buffer layer is difficult to guarantee, and cost is high are solved.

The invention provides anti-crack foam concrete as well as a preparation method and application thereof, and belongs to the technical field of building materials. The added quick lime can generate a certain micro-expansion effect when encountering water, shrinkage of the material caused by hydration can be compensated to a certain extent, an alkaline environment can be provided for the foaming agent, and smooth foaming is guaranteed; the magnesite tailing powder is added, so that dicalcium silicate, tricalcium silicate and periclase crystal phases with relatively high fire resistance can be obtained when a fire disaster occurs; the phosphogypsum is added as an activator of the coal gasification slag, so that the hydration induction period is shortened, the later strength development is promoted, and the crack resistance of the foam concrete is improved; the modified fibers are added, the fibers form an irregular supporting structure in the multi-bubble slurry to play a role in protecting the foam, meanwhile, the fibers can improve the pore structure and also have an effect of hindering microcrack propagation, and the three fibers have a synergistic effect, so that the crack resistance of the foam concrete is improved.

The invention discloses light soil with a bionic multilayer structure for water conservancy slope protection and a preparation process of the light soil, and belongs to the field of water conservancy slope protection materials. In order to solve the problems that an existing slope protection material is poor in mechanical stability and ecological vegetation compatibility and prone to interlayer stripping, the light soil is integrally formed into a high-strength framework core layer, an ecological nutrition transition layer and an anti-scouring vegetation surface layer from inside to outside, and the volume ratio of the three layers is 5: 3: 2-6: 2: 2; the core layer contains light foam concrete, fibers and nano silicon dioxide, the transition layer contains porous ceramsite and slow release fertilizer, and the surface layer contains mixed seeds and anti-erosion fibers. During preparation, interlayer meshing is realized by vibrating and embedding the transition layer before initial setting of the core layer, and demolding is performed through standard curing. The anti-scouring flow velocity of the product is larger than or equal to 2.0 m / s, the interlayer shear strength is larger than or equal to 0.2 MPa, the three-month vegetation coverage rate is larger than or equal to 60%, mechanical protection and ecological functions are considered, and the method is environmentally friendly, economical and suitable for slope protection projects of rivers, reservoirs and the like.

The invention provides self-repairing foam concrete and a preparation method thereof, and belongs to the technical field of concrete. The preparation method comprises the following steps: carrying out hydroxylation treatment on stone powder to obtain hydroxyl stone powder, modifying sodium alginate by using a silane coupling agent to obtain a grafted copolymer, compounding the hydroxyl stone powder, the grafted copolymer and nano silicon dioxide to obtain a composite carrier, and inoculating bacillus pasteurii onto the composite carrier; 300-400 parts by mass of cement, 100-150 parts by mass of the composite carrier inoculated with the bacillus pasteurii, 1 part by mass of a composite foaming agent and 10 parts by mass of urea are mixed according to the water-binder ratio of 0.35-0.45, and the self-repairing foam concrete is obtained. The self-repairing foam concrete is prepared by a one-step method through an innovative microbial carrier design and a composite repairing mechanism, and the problem that microbial inoculation and self-repairing foaming in composite concrete in the prior art need to be carried out step by step is solved.

The invention relates to the technical field of foam concrete, in particular to carbide slag-ardealite co-doped foam concrete and a preparation method thereof. The carbide slag-ardealite co-doped foam concrete is prepared from the following raw materials in parts by mass: 320 to 350 parts of ardealite, 10 to 40 parts of carbide slag, 120 to 150 parts of mineral powder, 50 to 80 parts of cement, 5 to 7 parts of water reducing agent, 2 to 5 parts of foaming agent, 0.003 to 0.005 part of sodium aluminate and 210 to 230 parts of water. According to the invention, ardealite is used as a main cementing material, and ardealite is large in stockpiling amount and wide in source, and can be consumed greatly as a roadbed material, so that environmental pollution is reduced, and a low-carbon target is realized; the carbide slag is relatively strong in alkalinity, so that an enough alkaline environment can be provided to promote mineral powder reaction, the utilization rate of solid wastes is remarkably increased, and the cost is further saved; and sodium aluminate is adopted as an exciting agent, so that the alkaline environment is increased, the Al content is increased, and a gel system is promoted to react.

The invention relates to a device and method for evaluating the uniformity of foam concrete, and belongs to the technical field of concrete.The method comprises the steps that a concrete test piece is formed through a cubic mold; uniformly dividing the upper surface of the concrete test piece into a plurality of sections, placing an ultrasonic scanning unit on each section of the concrete test piece for ultrasonic detection in sequence, recording the sound velocity of each measuring line, and calculating to obtain the average sound velocity Vk of each section; calculating a homogeneity coefficient lambda; and when the uniformity coefficient lambda is smaller than a uniformity coefficient threshold value specified by the corresponding density, determining that the uniformity of the concrete is qualified, otherwise, determining that the concrete is unqualified. According to the method, pores in the concrete are rapidly positioned by using an ultrasonic detection technology, the uniformity of the foam concrete is judged through discreteness of the acoustic velocity, and the method has the advantages of reliable detection result, simplicity and convenience in operation and the like.

The invention relates to the technical field of geotechnical engineering and slope reinforcement, and discloses a foam concrete-based expansive soil slope reinforcement structure which comprises a slope body and a foam concrete prefabricated reinforcement assembly mounted on the slope body through anchor rods, and the reinforcement assembly comprises a first reinforcement layer and a second reinforcement layer which are sequentially arranged on the slope surface of the slope body; the first reinforcing layer comprises a plurality of first reinforcing units arranged in the length direction of the slope body. By means of the double-layer design of the first reinforcing layer and the second reinforcing layer, the first prefabricated slab is longitudinally connected in an inserted mode through a dovetail or T-shaped tenon-and-mortise structure to achieve seamless attachment, the second prefabricated slab presses and covers tenon-and-mortise joints and is clamped and locked through the annular connecting piece, a latticed system of transverse restraining and longitudinal locking is formed, the structure can resist volume expansion of expansive soil by 30% or above, and the expansive soil is not prone to deformation. A soil body loss channel is effectively blocked, and the linkage problem of loosening-cavity-instability of a traditional prefabricated part is solved.

The application discloses a kind of composite gel-physical foaming synergistic carbon dioxide foam concrete preparation process, carbon dioxide foam concrete, by mass parts, consisting of following components: sulphate cement 15-45 parts, hemihydrate gypsum 10-50 parts, Portland cement 5-15 parts, mineral powder 0-30 parts, gypsum retarder 0-0.3 parts, retarder 0.2-0.4 parts, water reducing agent 0.2-0.4 parts, calcium stearate 0.2-0.6 parts, hydroxypropyl methylcellulose ether (HPMC) 0.1-0.3 parts, water-cement ratio 0.2-0.45, prefabricated foam 5-15 parts.Sulphate cement, Portland cement and hemihydrate gypsum are mixed to prepare carbon dioxide foam concrete when specific mass ratio, can play the hydration synergistic effect between three, and then can greatly improve the mechanical properties of carbon dioxide foam concrete.

The invention relates to a 3D printing foam concrete composition and slurry, and a construction method of a building structure, the 3D printing foam concrete composition comprises a powder material and a liquid material used for being mixed with the powder material; the powder material comprises the following components in parts by weight: 50-80 parts of Portland cement, 10-30 parts of phosphorus slag, 10-30 parts of carbide slag, 1-3 parts of a foaming agent, 1-2 parts of a foam stabilizer and 1-2 parts of a foaming catalyst; the liquid material is prepared from the following components in parts by weight: 20 to 40 parts of water, 0.06 to 0.12 part of a water reducing agent and 0.3 to 0.7 part of a thickening agent. The 3D printing foam concrete has the beneficial effects that after the 3D printing foam concrete is printed, the foam concrete is good in bubble stability and uniform in pore size distribution, so that the printable performance of a foam concrete material is improved.

The invention relates to the technical field of concrete mixers, in particular to concrete mixing equipment which comprises a mixing barrel, and a circulating mixing assembly is mounted in the mixing barrel; the circulating stirring assembly comprises stirring assemblies, stress lifting assemblies, an air injection box and a dust removal assembly, the two stirring assemblies are installed in the center of the stirring barrel and are opposite in stirring direction, a motor for driving the stirring assemblies to rotate is installed on one side of the stirring barrel, and the stress lifting assemblies are installed on the two sides of the inner wall of the stirring barrel; the air injection box is installed over the two stirring assemblies, a hole is formed in the bottom of the air injection box, one side of the air injection box is communicated with an air inlet pipeline, the dust removal assembly is installed at the top of the stirring barrel, the stress lifting assembly comprises a sliding plate, a baffle, an elastic plate, an inclined plate and a transverse plate, the sliding plate slides along the inner wall of the stirring barrel, and the baffle is installed at the top of the sliding plate. The technical problem that existing concrete stirring equipment is difficult to achieve the purpose of cyclic stirring of foam concrete by using an original structure in a stirring barrel is solved.

An efficient sound-absorbing lightweight aggregate cellular concrete, a method for preparing the same, and an application thereof. The concrete comprises: 85-95 parts by weight of low-carbon sulfur-aluminum-ferric cementitious materials, 5-15 parts by weight of supplementary cementitious material, 0.6-1.5 parts by weight of functional admixture, 20-60 parts by weight of non-sintered lightweight aggregate, 0.35-0.45 parts by weight of water, and 0.5-1.5 L of preformed foam. The non-sintered lightweight aggregate includes cementitious materials, byproduct gypsum, hydrogen peroxide, water, and expanded perlite. A multi-level pore structure is constructed from expanded perlite pores, hydrogen peroxide foaming pores, and physical foaming pores. The material exhibits a noise reduction coefficient ≥0.80, a bulk density≤500 kg / m3, and a flexural strength ≥1.5 MPa.

The invention discloses a foam concrete carbon sequestration rate evaluation method, foam concrete carbon sequestration rate evaluation equipment and a medium, and relates to the field of carbon neutralizer.The method comprises the steps that the apparent density of a CO2 foam concrete sample is measured; determining the theoretical matrix density of the concrete matrix; calculating the mass of CO2 in bubbles in the unit mass sample according to the apparent density and the theoretical matrix density; calculating a physical sealing rate according to the mass; based on a chemical curing amount detection method, determining the CaCO3 content measured by mu-XRD and the active calcium oxide content detected by LIBS; the chemical curing amount detection method comprises a mu-XRD method and an LIBS method. Determining a chemical curing rate according to the CaCO3 content and the active calcium oxide content; and determining the total carbon sequestration rate of the foam concrete according to the physical sequestration rate and the chemical curing rate. According to the method, the accurate carbon sequestration rate can be calculated.