3992results about "Ceramic shaping apparatus" patented technology

A waterfront soft soil area landscape pier precast pile comprises a concrete precast pile, the concrete precast pile comprises a pile top, a pile body and a pile tip, a steel reinforcement framework is arranged in the concrete precast pile, a drainage system and a grouting reinforcement system are arranged in the concrete precast pile, and the waterfront soft soil area landscape pier precast pile comprises a grouting pipe which longitudinally penetrates through the pile body from the pile top to the position above the pile tip. The top end of the grouting pipe extends out of the surface of the pile top to facilitate later grouting, the surface of the grouting pipe is connected with a grouting pipe branch pipe, the grouting pipe branch pipe extends out of the surface of the pile body in the radial direction, an included angle of 10-20 degrees is downwards formed between the grouting pipe branch pipe and the surface of the grouting pipe, and grout is sprayed along the inclined angle to form a mushroom-shaped reinforcing area to completely wrap the lower middle portion of the pile body. And the reinforcing area and the pile body form an integral collaborative stress body, so that the pile end resistance is further improved, and meanwhile, continuous consolidation settlement caused by excess pore water pressure is inhibited.

The invention provides a concrete 3D printing self-adaptive deviation correction method and system, and relates to the technical field of intelligent construction and additive manufacturing, the method comprises the following steps: determining a deviation field matrix based on three-dimensional point cloud data, a two-dimensional texture image and printing parameters of a printed concrete layer; and extracting a two-dimensional texture image based on a convolutional neural network model, determining a defect feature data set, inputting the deviation field matrix, the defect feature data set and the printing parameters into a deformation trend prediction model to obtain a deformation trend set, adjusting the printing parameters of the to-be-printed concrete layer, and generating a target concrete member. The technical problems that traditional concrete 3D printing depends on a preset program, dynamic changes of material rheological characteristics cannot be sensed in real time, the extrusion shape deviates from a design target, interlayer dislocation and deformation can be accumulated layer by layer, and structural instability is caused are solved, and the effect of improving the stability of a printed and formed concrete member is achieved.

The invention relates to the technical field of magnesia-alumina-carbon brick processing, in particular to a processing and forming device of an anti-stripping unfired magnesia-alumina-carbon brick for a steel ladle wall, which comprises a pressing machine table, a hydraulic rod piece is fixedly mounted on the pressing machine table, and a movable bearing table is fixedly mounted on the hydraulic rod piece; the mold bearing platform is mounted on the pressing machine platform and is used for supporting the pressing mold; the oil feeding assembly is fixedly mounted on the mold bearing platform; the movable oil injection assembly is mounted on the oil feeding assembly, and is driven by a movable bearing platform to move so as to carry out oil injection treatment on the mold; when oil injection of a mold needs to be carried out, the movable bearing platform drives the stepped rack to move upwards, the oil injection pipe is driven to move under the action of the stepped rack, a spray head reaches the mold, oil injection treatment is conveniently carried out on the mold, manual operation is not needed, great convenience is achieved, the oil injection pipe moves to one side during pressing, and pressing cannot be hindered.

The invention discloses spatial free distribution micro-scale cage-shaped unit interlocking confined concrete and a preparation method thereof.The preparation method of the spatial free distribution micro-scale cage-shaped unit interlocking confined concrete comprises the steps that a concrete premix, a pouring formwork and a plurality of micro-scale cage-shaped units are prepared; the concrete premix and the multiple micro-scale cage-shaped constraint units are mixed, and pouring is completed in the formwork; and curing and hardening the concrete premix in the pouring template and a concrete reinforcing framework formed by interlocking the plurality of cage-shaped constraint units to obtain the spatial free distribution micro-scale cage-shaped unit interlocking constraint concrete. The cage-shaped constraint units with multiple concrete component scales are doped in the concrete premix, the spatial free distribution micro-scale cage-shaped unit interlocking constraint concrete is prepared, and the mechanical property of a concrete member can be improved.

The invention discloses a superconducting magnetic levitation U-shaped track beam and a preparation method thereof, and belongs to the technical field of bridge engineering.The superconducting magnetic levitation U-shaped track beam is used for running of a magnetic levitation train with superconducting coils arranged on the two sides of a train body, and the track beam comprises a plurality of track beam sections which are sequentially spliced in the longitudinal direction; each track beam section comprises a main beam body and two side plates arranged on the two transverse sides of the main beam body respectively, the two side plates and the main beam body are integrally formed to form a U-shaped beam body structure, a maglev train can run in the U-shaped beam body, mounting grooves are formed in the inner side wall faces of the two side plates and used for mounting ground coils, and the invention further provides a preparation method of the superconducting maglev U-shaped track beam. The superconducting magnetic levitation U-shaped track beam is formed by splicing the multiple track beam sections, the main beam body and the two side plates in the track beam sections are integrally formed, the number of joints of the track beam is greatly reduced, the smooth performance of the track beam is guaranteed, and the overall stability of a magnetic levitation track system is improved.

The invention discloses ceramic cup firing forming equipment, and relates to the technical field of firing forming equipment, the ceramic cup firing forming equipment comprises a kiln and a base, the base penetrates through the kiln, a rotatable ceramic roller bar is installed on the base, a supporting frame is placed at the top end of the ceramic roller bar, the ceramic roller bar is used for driving the supporting frame to be conveyed from a kiln head to a kiln tail, and the ceramic roller bar is used for driving the supporting frame to rotate. The supporting frame is composed of a bottom plate and a supporting plate and comprises a connecting mechanism and a limiting mechanism. By arranging a connecting mechanism and a limiting mechanism, a cup body is placed at the top end of a grid plate, a supporting plate is assembled above a bottom plate, at the moment, a transverse rod moves, a sliding rod slides in an inclined groove to drive a vertical rod to move upwards, the vertical rod drives a limiting frame to move, and the limiting frame moves to drive a limiting groove to move to the outer side of the bottom of the cup body; and the limiting groove is used for limiting the cup body, so that the ceramic cup can be conveniently limited in the firing process, and the cup body is prevented from shifting in the firing process.

The invention provides box girder bottom and web reinforcement cage framework streamlined production equipment, and belongs to the technical field of box girder prefabrication processing. The box girder bottom and web reinforcement cage framework streamlined production equipment comprises a moving seat which is linearly and slidably mounted on the ground, and a longitudinal bar fixing assembly is arranged at one end of a first rail; an automatic welding machine, a tidying mechanism and a stock bin are sequentially arranged on the moving seat in the direction that the moving seat slides away from the longitudinal bar fixing assembly, the stock bin is used for horizontally arranging and placing the combined stirrups, shifting assemblies are further arranged on the moving seat and located on the two sides of the stock bin, and the tidying mechanism is used for fixing the combined stirrups and positioning longitudinal bars; the automatic welding machine is used for welding the joints of the combined stirrups and the longitudinal bars on the arranging mechanism, and a supporting assembly is arranged below the moving seat. The combined stirrups can be taken out of the stock bin through actions of the arranging mechanism and the material stirring machine, then the automatic welding machine is used for welding, the moving seat moves backwards by a certain distance after one round of welding, the next round of welding of the combined stirrups is carried out, and the welding and manufacturing efficiency of a reinforcement cage framework is improved.

The invention relates to the technical field of 3D printing, and discloses a slurry scraper device and 3D printing device.The slurry scraper device comprises a mounting structure, a rotation driving structure, a first adjusting structure and a second adjusting structure, by arranging the rotation driving structure, the mounting structure can rotate in the Z-axis direction, so that macroscopic adjustment can be conveniently conducted on the overall posture of a scraper, and the overall posture of the scraper is adjusted; the requirements of blade coating paths or angles in different working scenes can be met, and the applicability and the flexibility of the device are improved; the first adjusting structure is arranged on the mounting structure, so that the scraper slides back and forth in the Z-axis direction, the gap between the scraper and the surface of the base material is accurately adjusted, the blade coating thickness is effectively controlled, and the uniformity of a blade coating layer is improved; and due to the arrangement of the second adjusting structure, the scraper can rotate around the Y-axis direction, and fine adjustment control over the angle of the scraper is achieved, so that the blade coating angle is optimized, the slurry accumulation and trailing phenomena are reduced, and the smoothness of the blade coating surface is improved.

A method for providing one or more sides or edges of a ceramic unit with decor may include the step of providing the ceramic unit. The ceramic unit may be made of a ceramic material and may include decor disposed on a main surface of the ceramic unit. The method may also include the step of acquiring an image of at least a portion of the decor disposed on the main surface of the ceramic unit. The method may also include the step of deriving decor for a side of the ceramic unit from the image. The method may also include the step of providing the decor on the side of the ceramic unit.

A powder for additive manufacturing which is an inorganic oxide powder, wherein D10 is 1.0 to 4.0 μm, D50 is 5.5 to 9.0 μm, D90 is 20.0 to 40.0 μm, and the volume ratio of particles having a particle size of 16.8 to 60.0 μm is 15.0 to 22.0 vol %.

The present application belongs to the technical field of ceramic alloy flywheel, and particularly relates to a liquid-liquid composite ceramic inlaid high-wear-resistance flywheel and a preparation method thereof, which is suitable for high-strength impact environment such as mines and metallurgy. The flywheel realizes metallurgical bonding of ceramic-metal by step-by-step pouring and temperature control solidification of basalt melt and high-density W-Ni-Fe alloy melt in a specific mold structure. The ceramic core is composed of multiple inorganic oxides and low-melting-point glass powder, and has excellent interface compatibility and structural stability. During the preparation process, the initial setting state of basalt and the alloy flow path are accurately controlled to improve the interface bonding strength and overall density. The finally obtained flywheel has high hardness, high toughness and excellent wear resistance, and significantly prolongs the service life.

The invention provides a fettling device and a fettling method for insulator production, and belongs to the technical field of insulator machining, the fettling device for insulator production comprises a workbench and an insulator placed in the workbench, the workbench is internally provided with a clamping assembly used for placing and clamping the insulator, and the clamping assembly is used for clamping the insulator; a fettling assembly used for fettling the insulator is arranged on one side of the clamping assembly, and a supporting assembly is arranged in the workbench; the supporting assembly comprises two sets of supporting frames arranged in the workbench in a sliding mode. By arranging the supporting assembly, it is guaranteed that all the umbrella skirts are supported, angle adjustment is carried out through the pin rollers, the supporting assembly is conveniently inserted into the bottoms of the umbrella skirts and fits the angles and shapes of the bottoms of the umbrella skirts, and the problem that a hard support makes direct contact with the machining surface and is scratched is avoided; the inclination angle of the roller can be adjusted to ensure that the roller can adapt to the inclination angle of the bottom of the umbrella skirt so as to adapt to the supporting requirements of the bottoms of different insulator umbrella skirts.

The invention belongs to the technical field of ceramic materials, and particularly discloses whisker toughened zirconium oxide-aluminum oxide composite ceramic and an additive manufacturing method thereof, the composite ceramic comprises the following components by mass: 94 parts of zirconium oxide toughened aluminum oxide ceramic and 5 parts of silicon carbide whisker; the zirconium oxide toughened aluminum oxide ceramic is prepared from the following components in parts by mass: 76 parts of aluminum oxide and 24 parts of zirconium oxide, and 3mol% of yttrium oxide is added into the zirconium oxide. According to the whisker toughened zirconium oxide-aluminum oxide composite ceramic and the additive manufacturing method thereof, the preparation method has unique design of components and process, and the preparation of a high-density and high-performance ceramic-based composite material part based on a fused deposition modeling technology is successfully realized. Further, the prepared silicon carbide whisker toughened zirconium oxide-aluminum oxide-based composite ceramic has relatively high density and excellent obdurability.

The utility model discloses a durable refractory brick forming device which comprises a box body, a forming mechanism is installed at the bottom of the inner side of the box body, the forming mechanism comprises a reinforcing frame, a mold frame is installed on the inner side of the reinforcing frame, and the mold frame can be inserted into the inner side of the reinforcing frame in a sliding mode and can be fixed through bolts. The die frame is installed on the inner side of the reinforcing frame, certain protection and reinforcing effects can be achieved in the extrusion forming process of refractory bricks, the durability of the die frame is improved, meanwhile, due to the fact that the die frame can be detached from the reinforcing frame, the die frame can be conveniently and regularly cleaned and maintained, and the service life of the die frame is prolonged. And the mold frame is kept in a good use state, is not easy to damage and is more durable, so that the durability of the refractory brick forming equipment is improved.

It is described a process for producing transparent ceramic bodies with at least two zones having different garnet composition, in particular in which one of said zones has composition Y3AI5O12. The invention is especially useful for the production of transparent ceramic bodies having preset complex shapes and / or a controlled complex distribution of doping ions.

According to the 3D printing concrete truss girder structure based on three-dimensional steel bar reinforcement and the construction method, through space welding connection of the three-dimensional conical steel bars and the top plane steel bars, the interlayer bonding performance and the overall stress performance of a 3D printing concrete truss girder are remarkably improved. The three-dimensional conical steel bars comprise plane steel bars matched with the truss girder in length and width and a plurality of three-dimensional conical steel bar units, the three-dimensional conical steel bar units are arranged in the mode that the height of a three-dimensional space component formed by bending metal steel bars crosses over at least one or more concrete printing layers, and the plane steel bars are buried in the lower layer concrete. And the upper ends of the three-dimensional conical steel bar units are fixedly connected with the top vertical rod section steel bars of the top plane steel bars on the upper layer or the higher layer or the vertical bars of the next plane steel bars, so that an integral space steel bar framework is formed. The steel plate has higher shear bearing capacity, better ductility and a better failure mode, and is suitable for load-bearing components in various building and bridge engineering.

Methods and apparatus for a composite bicycle front sprocket are disclosed herein. One embodiment discloses a composite bicycle front sprocket assembly having an outer assembly of a first material. The bicycle front sprocket assembly also has a center assembly of a second material. The center assembly is disposed at least partially within the outer assembly. The center assembly is irremovably coupled with the outer assembly. The center assembly is irremovably coupled with the outer assembly without an external fastening device to irremovably couple the center assembly with the outer assembly.

The clay 3D printer comprises a water supply mechanism, when water needs to be supplied to an extrusion mechanism, a first one-way valve is opened, a piston rod moves in the direction away from a conduction valve, water in a water supply bin flows into a water injection cavity, then the first one-way valve is closed, a second one-way valve is opened, and the water outlet amount is controlled. A piston rod moves in the direction close to a communicating valve, so that water in a water injection cavity flows into a water outlet pipeline through a water outlet channel, a clay raw material in an extrusion assembly and the water are mixed and stirred to form a clay material for 3D printing, and water can be conveniently supplied to the extrusion assembly; and the water storage amount in the water injection cavity each time is controlled through the driving air cylinder with the adjustable stroke, so that the quality of the clay 3D printing product is more stable.

The invention belongs to the field of protective materials, and particularly relates to a 3D printing high-performance porous silicon carbide ceramic wave-absorbing material and a preparation method and application thereof. The extrusion type 3D printing technology is combined with the reaction sintering and impregnation technology, the complex structure forming and the high-performance wave absorbing effect are achieved, the material prepared through the method has excellent mechanical performance and wave absorbing performance at the same time (the bending strength is larger than 15 MPa, the reflection loss minimum value at the frequency band of 2-18 GHz is larger than-25 dB, and the absorption bandwidth is larger than 3 GHz), and the material has the good application prospect. The method is suitable for military stealth engineering and other fields.

A de-powdering system includes one or more sidewalls defining a support chamber configured to contain an additive manufacturing build where the additive manufacturing build includes one or more objects disposed within a powder build material. A fluidization mechanism is fluidically couplable to a fluid source and includes one or more flow channels fluidically coupled to the support chamber. The fluid source is actuatable to provide a fluid from the fluid source to the support chamber and inject the fluid into the support chamber via the one or more flow channels. The one or more flow channels are oriented to introduce a swirling flow of the fluid into the support chamber to fluidize at least a portion of the powder build material within the support chamber.

This invention discloses a railway sleeper surface roughness treatment device and method, relating to the field of railway sleeper surface treatment technology. Key technical features include an installation area, with a traction component installed on one side of the upper end of the installation area, and a railway sleeper conveying component installed on the other side of the upper end of the installation area. A water spraying component is installed at the upper end of the installation area, outside the railway sleeper conveying component. The water spraying component includes two symmetrically installed installation boxes at the top of the installation area, with a protective cover between the two installation boxes. Two hydraulic rotating heads are installed inside the installation boxes, with a rotating disk at one end of each hydraulic rotating head and multiple nozzles installed at the other end of the rotating disk. The technical advantage of this design is that it uses a continuous conveying and processing method to treat the surface roughness of the railway sleeper body, improving overall production efficiency.

The application relates to the technical field of decorative plates, and particularly relates to an outer wall stone-imitating decorative plate, which comprises a bearing component, a polyurethane foaming layer, a stone-imitating layer, a light-weight concrete layer and a rubber protection layer. The bearing component comprises an aluminum plate, the outer side of the aluminum plate is provided with a copper cladding layer, one side of the aluminum plate is provided with a first support frame, the other side of the aluminum plate is provided with a second support frame, and the one side of the aluminum plate is provided with a weight-reducing hole. The bearing component is used for enhancing the firmness and strength of the decorative plate, the first support frame is used for connecting the polyurethane foaming layer, the second support frame is used for connecting the light-weight concrete layer, the adhesion of the materials is improved, the assembly rods and assembly holes are used for connecting adjacent decorative plates, the convenience of assembly is improved, the polyurethane foaming layer is used for shaping the decorative surface of the decorative plate, the shaping convenience is high, the stone-imitating layer is used for reinforcing the outer side of the polyurethane foaming layer, the hardness of the outer side of the polyurethane foaming layer is improved, and the simulation effect is improved.

The utility model discloses a precast beam maintenance device with a spraying maintenance function, which belongs to the technical field of precast beam maintenance and comprises mounting seats, the mounting seats are positioned on two sides of a precast beam, a water tank is arranged at the tops of the mounting seats, a U-shaped frame is fixedly connected to the tops of the two mounting seats, a U-shaped pipe is mounted in the U-shaped frame, and the U-shaped pipe is fixedly connected with the mounting seats. A U-shaped pipe is arranged on the upper portion of the mounting base, a plurality of spray heads are arranged on the side wall of the U-shaped pipe, an adjustable spraying mechanism is arranged on the top of the mounting base, and a filtering mechanism is arranged between the water tank and the U-shaped pipe. The position and angle of water mist sprayed by the atomizing nozzles are adjusted, spraying maintenance can be conducted on precast beams of different shapes and sizes, the two sides of each precast beam are evenly sprayed, and the uniformity of spraying maintenance on the precast beams is improved.

The invention discloses a variable-temperature curing method for curing a high-ground-temperature tunnel sprayed concrete test piece, and relates to the technical field of concrete construction. Comprising the following steps: acquiring concrete test piece samples with different water-binder ratios, aggregate types and additive contents, recording hydration heat data of the concrete test piece samples, and performing normalization processing to generate a training sample data set; and establishing a neural network prediction model based on the data set, inputting concrete characteristics, and outputting a hydration heat prediction value. Thirdly, calculating a hydration heat influence index in combination with the thickness and the surface roughness, and meanwhile obtaining environmental parameters in the tunnel, including temperature, humidity and wind speed to calculate an environmental influence index; and finally, dynamically correcting the curing temperature of the to-be-detected concrete test piece by utilizing the heat conductivity of the tunnel surface structure and the comprehensive environment and hydration heat influence index, so that the accuracy and effectiveness of temperature control are ensured, and the overall efficiency and quality of construction are remarkably improved.

The invention discloses a bionic cross plate tubular pile with the outer wall imitating snake scales, the inner wall imitating tree roots and the bottom end imitating tooth roots and a manufacturing method of the bionic cross plate tubular pile. The bionic cross plate tubular pile comprises a cylindrical tubular pile body, cross plates and tooth root imitating structures. The outer wall of the cylindrical pipe pile is provided with a plurality of snake-scale-imitated protruding structures, and the inner wall of the cylindrical pipe pile is provided with a plurality of tree-root-imitated protruding structures. The cross plate is arranged in the cylindrical pipe pile and divides a circular cavity in the cylindrical pipe pile into four first fan-shaped cavities; the tooth root imitating structure is arranged at the bottom end of the cylindrical pipe pile. According to the invention, the inertia moment of the pile body, the pile end resistance, the pile side friction resistance and the pulling resistance are synergistically enhanced through multiple bionic designs, so that the comprehensive bearing capacity of the tubular pile under the combined action of vertical and horizontal loads is remarkably improved, and a novel solution is provided for pile foundation engineering under complex load and geological conditions.

A method for manufacturing a ceramic ball material according to an embodiment, includes: a step of producing a ceramic green compact; a step of performing a plurality of times of a CIP process on the ceramic green compact to produce a CIP (cold isostatic pressing) green compact; and a step of sintering a CIP green compact produced by a final CIP process among the plurality of times of the CIP process to produce a ceramic sintered compact. In the step of producing the CIP green compact, after a former CIP process among the plurality of times of the CIP process is performed, an orientation of a CIP green compact produced by the former CIP process is changed, and a latter CIP process is performed.

The present invention relates to the technical field of bridge engineering. Particularly disclosed are a steel shell-concrete composite orthotropic bridge deck structure and a fabrication method and device. The steel housing-concrete composite orthotropic bridge deck structure comprises a steel shell structure, infilled concrete, longitudinal and transverse stiffening ribs arranged at the bottom of the steel shell structure, and a deck-end connecting structure, wherein the steel shell structure comprises an upper steel plate and a lower steel plate that are arranged in parallel, and a plurality of perforated T-shaped ribs arranged in parallel in a longitudinal direction. Webs of the perforated T-shaped ribs are welded to the upper steel plate, flanges are riveted to the lower steel plate, the upper steel plate and the lower steel plate are connected into the steel shell structure, and reinforced concrete tenons formed by the perforated T-shaped ribs and core bar reinforcements and shear bolts anchor the upper steel plate and the lower steel plate in the infilled concrete to form a steel shell-concrete composite deck that bears loads jointly. The present invention provides high bending stiffness, solves the problem of fatigue at welds between the stiffening ribs and a steel top plate, fully utilizes the properties of a steel shell and concrete, and solves the problems of the crackability under a negative bending moment and excessive weight of a traditional composite bridge deck.

The invention discloses a multi-ceramic-material 3D printing nozzle, device and method. The 3D printing nozzle designed by the invention can be adaptive to simultaneous extrusion and intermittent extrusion of one or more different biological ceramic slurries; the printing device comprises a 3D printing platform with an FDM printer as a main body, a discharging module combined with a printing nozzle and a pneumatic system, and a curing module composed of follow-up ultraviolet laser. Through a pulse strategy and relative pressure control and in combination with a laser-assisted curing technology, a runner invasion behavior (backflow) is overcome, construction of a biological ceramic scaffold with spatial heterogeneous material distribution is realized, and a new idea is provided for preparation of a multi-ceramic material bone repair scaffold.

The utility model discloses mold release agent spraying equipment and a prefabricated part production line. The mold release agent spraying equipment is used for spraying a mold release agent to a mold for prefabricated part production. Comprising a bearing structure, a bearing seat, a walking driving unit, an industrial mechanical arm and a spraying device, and a walking guide rail extending in the length direction of a bearing beam is arranged on the bearing beam of the bearing structure; the bearing seat is connected with the walking guide rail and can move along the walking guide rail; the walking driving unit is in transmission connection with the bearing seat, and the walking driving unit is configured to drive the bearing seat to walk along the walking guide rail; the mounting end of the industrial mechanical arm is fixedly connected with the lower part of the bearing seat, and a mold spraying area is arranged below the industrial mechanical arm; the spraying device comprises spraying guns and a release agent supply unit, at least one spraying gun is installed at the cantilever end of the industrial mechanical arm, and the release agent supply unit is connected with the spraying guns through pipelines and can provide release agents for the spraying guns. The mold spraying device can meet spraying of molds with high spraying difficulty, and has the beneficial effects of being good in universality and the like.

The invention discloses a preparation device and process of hydrophobic lightweight concrete, and relates to the technical field of concrete processing, the preparation device comprises a base, a pedestal, a die holder, a vibration mechanism, a pressing plate, a hydraulic cylinder, a height adjusting mechanism and a one-way valve structure; the height adjusting mechanism communicates with the exhaust channel and is configured to drive the pressing plate to descend relative to the hydraulic cylinder through the pressure of gas entering the exhaust channel so as to reduce the distance between the pressing plate and the upper surface of the raw material. According to the invention, the special one-way valve structure is arranged on the pressing plate and matched with the up-and-down reciprocating motion of the die holder, so that air extruded from raw materials can be actively exhausted to the exhaust channel in the vibration process, and most of air can be effectively exhausted even if the vibration time is relatively short, so that the tap density of the raw materials is ensured, and the production efficiency is improved. And the layering phenomenon of light and heavy materials caused by long-time vibration is avoided, so that the overall quality and the yield of the lightweight concrete are remarkably improved.