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131 results about "Wall material" patented technology

The construction materials of the Great Wall were mainly earth, stone, brick, lime, and wood. The materials used depended on the local resources available. When building the Great Wall on mountains, stones were used from the mountains; when building it across the plains, the materials used were earth, bricks, and lime.

Novel automatic cutting equipment for building wall materials

The utility model relates to the technical field of automatic cutting equipment, in particular to novel automatic cutting equipment for building wall materials, which comprises a frame body, Y-axis guide rails are fixedly arranged on two sides of the frame body, a movable inverted U-shaped seat is arranged outside the frame body, and a Y-axis slider is arranged on the inner side of the inverted U-shaped seat. A Y-axis motor is fixedly arranged on the inverted U-shaped seat; z-axis guide rails and tool rests in sliding fit with the Z-axis guide rails are arranged on two side plates of the inverted-U-shaped base respectively, and the tool rests are driven by a Z-axis motor to move along the Z-axis guide rails; a forming tool used for machining a V-shaped groove along a to-be-cut line of a wall material and a cutting tool used for cutting the wall material along the V-shaped groove are arranged on the portions, on the two sides of the inverted-U-shaped base, of the tool rest correspondingly, and the cutting center of the forming tool and the cutting center of the cutting tool are located on the same straight line. The cutting device is convenient and practical, low in operation difficulty and high in automation degree, meets the requirement of a continuous production process, firstly forms and then cuts, and greatly improves the cutting yield.
Owner:LUOYANG NORTH GLASS SINEST TECH CO LTD

Design and construction method for deep covering layer high gravelly soil core wall rock-fill dam

The invention discloses a design and construction method for a deep covering layer high gravelly soil core wall rock-fill dam, and belongs to the technical field of design and construction of water conservancy and hydropower engineering structures. According to the design and construction method for the deep and thick covering layer high gravel soil core wall rock-fill dam, the contradiction between settlement deformation space-time evolution of upstream rock-fill materials and gravel soil core wall materials can be well solved, and the longitudinal crack risk of the dam crest is reduced. According to the design and construction method, a fissure type weathered sand slate stock ground, an alteration zone dominant granite stock ground and an engineering area excavation material are used as dam body rockfill material sources, zoning control over the fine particle content of rockfill materials is used as a main line, and humidification deformation of upstream rockfill materials is dispersed into the dam filling process; the unloading effect of humidification deformation and the loading effect of dam filling are overlapped to achieve self-adaptive adjustment of dam body stress deformation, and finally the high gravelly soil core wall rockfill dam built on the deep covering layer is obtained, wherein the upstream rockfill material adapts to settlement deformation of the gravelly soil core wall material, and the longitudinal fission trend of the dam crest meets the requirement.
Owner:CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE

Green building wall structure

The utility model relates to the technical field of green buildings, in particular to a green building wall structure. According to the technical scheme, the structure comprises two outer walls, an inner wall is arranged between the two outer walls and comprises inner wall surface layers arranged on the two sides, heat insulation layers are arranged on the sides, close to each other, of the two inner wall surface layers, and damp-proof layers are arranged on the portions, between the two inner wall surface layers, of the two sides of the heat insulation layers; multiple sets of reinforcing rods are arranged on the sides, close to each other, of the two sets of outer walls, reinforcing rib frames are arranged in each set of outer walls, assembling clamping strips are arranged on the two sides, away from the assembling grooves, of the inner walls, and multiple sets of pipeline cavities are formed in the outer walls and the inner walls. The wall body has excellent heat insulation and heat preservation performance through the arrangement that the outer wall and the inner wall are matched with each other, energy consumption of a building can be greatly reduced, wall body materials can be recycled, generation of building waste is reduced, and reduction of resource waste is facilitated.
Owner:GUANGDONG CHENGXIN CONSTR ENG CO LTD

Accessory mounting member, building, and construction method of building

To provide an accessory mounting member capable of improving the strength of attachment of an accessory, a building, and a construction method of the building.SOLUTION: The building includes: an outer wall 11 that has a structural member 12 and an exterior wall material 13 installed outside of the structural member 12; and an accessory mounting member 15 for attaching accessories to the outdoor side of outer wall 11. The accessory mounting member 15 includes: a fixed portion 51 that is fixed to the structural member 12; a mounting portion 52 that is located outside the exterior wall material 13 to which accessories are attached; and a connecting portion 53 that connects the fixed portion 51 and the mounting portion 52. In the portion outside the exterior wall material 13 that is located on the outer side of the connecting portion 53, a flange 54 is provided that protrudes in a direction intersecting the direction in which the connecting portion 53 extends. A sealant 16 is provided between the flange 54 and the exterior wall material 13.SELECTED DRAWING: Figure 7
Owner:SEKISUI HOUSE KK

Water seepage testing device for building wall

The invention relates to the technical field of water seepage testing of building wall materials, in particular to a building wall water seepage testing device which comprises a box, side frames are arranged on the two sides of the interior of the box, front frames are arranged on the two sides, away from the side frames, of the interior of the box, and electric control telescopic rods are fixedly installed on the opposite sides of the side frames and the front frames. The opposite sides of the side frames and the front frame are each fixedly provided with four positioning telescopic sleeves, and the opposite sides of the side frames and the front frame are each provided with a sliding groove. Measurement force is increased by applying air pressure, positive pressure and negative pressure are switched as required so as to obtain a better test effect, and a negative pressure and positive pressure switching test can be carried out on the interior of a rectangular frame of a tested plate by switching opening and closing of a valve and a pipeline during test, so that test modes of the plate are increased, and the test efficiency is improved. And the test effect of the structure is improved.
Owner:平邑县建设安全工程质量服务中心

Recycled micro-powder improved soil-bentonite vertical anti-fouling isolation wall and construction method thereof

The present invention discloses a regenerated micro-powder improved soil-bentonite vertical anti-fouling isolation wall and a construction method thereof, including an isolation wall body, a guide wall and a steel pipe frame, wherein the steel pipe is arranged at the bottom of the isolation wall body. The method comprises: a, preparation of bentonite slurry; b, preparation of regenerated micro-powder of construction waste; c, construction of the guide wall; d, digging and grooving; e, preparation of the wall material of the isolation wall; f, making a bottom support plate and an inner insert plate; g, making a steel pipe frame; h, welding a bottom support plate; i, welding an inner insert plate; j, hanging and placing the steel pipe frame; k, hot-melt connection of the anti-seepage plate; l, backfilling of the wall material of the isolation wall; m, forming of the vertical anti-fouling isolation wall. The present invention can enhance the stability of the groove during the construction of the vertical anti-fouling isolation wall, that is, ensure the integrity of the wall body after the wall is formed, enhance the anti-seepage and anti-fouling performance of the vertical anti-fouling isolation wall, and at the same time, utilize the regenerated micro-powder of construction waste as the wall improvement material, which can optimize the mechanical properties and anti-seepage and anti-fouling performance of the wall body.
Owner:ZHEJIANG UNIV OF WATER RESOURCES & ELECTRIC POWER +1

Inorganic nanofiber reinforced concrete composite material for light building material

The invention discloses an inorganic nanofiber reinforced concrete composite material for a lightweight building material, and relates to the technical field of advanced inorganic non-metallic materials, the composite material is prepared from cement, lightweight aggregate, fine aggregate, modified inorganic nanofiber, a mineral admixture, a water reducer, a dispersant and water, the modified inorganic nanofibers are subjected to surface activation treatment through a silane coupling agent, the interface bonding strength with a cement matrix is improved, the preparation method comprises the steps of nanofiber surface modification, ultrasonic dispersion, dry material mixing, wet material stirring, aggregate adding and forming and curing, the dry apparent density of the prepared composite material is 1400-1600 kg / m < 3 >, the 28-day compressive strength reaches 35-45 MPa, and the composite material is suitable for being used as a cement-based composite material. The light-weight high-strength light-weight building material has the characteristics of light weight, high strength, good crack resistance and excellent durability, and is suitable for the fields of novel wall materials and light-weight building materials.
Owner:SHANXI HENGGU NEW MATERIALS CO LTD

Full-dimensional environment online monitoring device based on multi-sensor fusion

The utility model provides a full-dimension environment on-line monitoring device based on multi-sensor fusion, which relates to the technical field of monitoring devices and comprises a monitoring main body, fixing bolts and a mounting plate, an outer plate is fixed on the back of the monitoring main body through the fixing bolts, a mounting sliding block is fixed on the back of the outer plate, and a mounting groove is formed in the front of the mounting plate. The inner wall of the mounting groove is slidably connected with the surface of the mounting slider. According to the utility model, the monitoring main body is slidably connected with the mounting groove of the mounting plate through the mounting slide block of the outer plate, so that a worker can conveniently insert the monitoring main body into the mounting plate, and meanwhile, the mounting groove and the mounting slide block are trapezoidal, so that the sliding paths of the mounting groove and the mounting slide block are well limited and prevented from deviating; the effects of being convenient for workers to disassemble and assemble and reducing the disassembly and assembly time are achieved; through fixed cooperation of the inner plate and the outer plate, the monitoring main body is far away from the wall after being installed on the monitoring main body, and local temperature difference caused by thermal inertia of wall materials such as concrete and masonry is prevented.
Owner:HENAN JINGHONG TECHNOLOGY CO LTD

A wall assembly type dry hanging construction device and method

The present invention relates to a wall assembly type dry hanging construction device and method, including a hanging groove keel, a hanging beam, an embedded plate, an L-shaped hanging piece, a movable bolt, a supporting piece, and a brick hanging piece. The embedded plate is fixedly connected to a concrete beam, a column or a load-bearing wall, the hanging groove keel is welded to the embedded plate, and the two sides of the hanging groove keel are perpendicular to the embedded plate, the hanging groove keel is welded to the L-shaped hanging piece, the hanging beam is connected to a plurality of L-shaped hanging pieces, the movable bolt is used to connect the hanging groove keel and the L-shaped hanging piece, and the end of the supporting piece is plugged into the hanging beam; the movable bolt includes a screw rod and a movable rod, the screw rod passes through the hanging groove keel and is fixed to the hanging groove keel by a nut, one end of the screw rod is a bolt head, and the other end has a thread, and the part of the screw rod near the bolt head is a cuboid; one end of the movable rod is sleeved with the screw rod, and the other end is fixedly connected to the bottom plate of the L-shaped hanging piece; the brick hanging piece is slidably connected to the hanging beam. The advantages are: the present invention adopts a strip top plate support hanging method, which can safely and effectively support wall materials for a long time.
Owner:陈华

Vibration control structure

To provide a vibration control structure that can be adopted as a medium to large timber construction and facilitates maintenance management and exchange work for a vibration control device.SOLUTION: A vibration control structure can be constructed in each floor of a building with multiple floors, the structure comprising a wall material 30 attached to a first structural material of the floor, a first flat plate 31 provided so as to project from a second structural material facing the first structural material toward the first structural material, a second flat plate 32 provided so as to project from the wall material 30 to the second structural material, and a vibration control device 33 that is fastened to each of the first flat plate 31 and the second flat plate 32 by using fastening means and includes a viscoelastic member.SELECTED DRAWING: Figure 4
Owner:NISHIMATSU CONSTR CO LTD

Reinforced soil wall construction method

To provide a reinforced soil wall construction method eliminating dripping of a filler such as sediment from a front face of a retaining wall while securing stability of a wall face material.SOLUTION: A wall face material comprises geo-cells 2 having restraining parts 7 where a plurality of approximately strip-like strip members 5 are formed by being joined at each predetermined interval and which restrain a filler by separating non-connected parts between the strip members 5 from each other, wherein the geo-cell 2 includes a specific geo-cell 92 provided with a plurality of normal strip members 5 with the approximately same height dimension to each other, and specific strip members 50 larger than the normal strip members 5 arranged on a forefront line. In a process of forming a wall part 3 by stacking the plurality of specific geo-cells 92 vertically, the specific strip members 50 are arranged on the forefront line. When vertically stacking other specific geo-cells 92 on the upper stage of the specific geo-cells 92, lower end parts of the specific strip members 50 of the upper specific geo-cells 92 on the upper stage are stacked so as to be overlapped on a rear part of upper end parts of the specific strip members 50 of the specific geo-cells 92 on the lower stage.SELECTED DRAWING: Figure 7
Owner:GEOVECTOR CORP

Preparation process of unfired building block containing stone powder

The invention discloses a preparation process of an unfired building block containing stone powder, and belongs to the field of building solid waste recycling. The process comprises the following steps: performing graded crushing to obtain four-stage construction waste aggregate, modifying the four-stage construction waste aggregate with a silane coupling agent-cement composite coating agent, mixing the modified four-stage construction waste aggregate with superfine stone powder according to gradient grading, and performing layered vibration pressure forming and baking-free curing to obtain the building block. According to the invention, three-stage process synergy is adopted: graded crushing is adopted to optimize particle size distribution, surface coating is adopted to enhance interface bonding, gradient grading is adopted to improve structural compactness, 28d compressive strength of the obtained building block is greater than or equal to 15MPa, solid waste mixing amount is greater than or equal to 90%, energy consumption is reduced by 80% compared with that of a traditional process, and carbon emission is reduced by more than 60%. The process is suitable for large-scale production of high-performance unfired wall materials, and has remarkable environmental protection and economic benefits.
Owner:QUANZHOU NORMAL UNIV

Mounting bracket for exterior wall material and mounting structure for exterior wall material

Increases fastening strength to the underlying steel material and prevents it from falling off. [Solution] A mounting bracket 1 for an exterior wall material comprises a main body 2 having an elongated hole 23, and an engaging portion 3 provided at one end of the main body 2. The engaging portion 3 is bent in a mountain shape relative to a first surface 21 of the main body 2, forming an engaging recess 30 in a width direction X perpendicular to the extension direction Y of the elongated hole 23, and is provided with a plurality of claws 4 extending toward the inside of the engaging recess 30. The claws 4 extend in directions that intersect with each other, and are arranged to clamp the clamped portion of the underlying steel material.
Owner:SEKISUI HOUSE KK +1

Construction structure for exterior wall material and starter

To provide a construction structure for an exterior wall material that prevents rainwater from accumulating.SOLUTION: A construction structure for an exterior wall material 1 comprises the exterior wall material 1 and a starter 2 for attaching the exterior wall material 1 to a wall foundation 3. The exterior wall material 1 comprises a plate-shaped body portion 11, a clamping portion 13 provided opposite the rear of a lower portion 12 of the body portion 11, and a covering portion 14 disposed between the lower portion 12 of the body portion 11 and the clamping portion 13. The starter 2 is positioned between the lower portion 12 of the body portion 11 and the clamping portion 13, and comprises an insertion portion 21 located above the covering portion 14.SELECTED DRAWING: Figure 1
Owner:NIPPON STEEL COATED SHEET CORP

Door wall partition structure capable of being quickly assembled and disassembled

The utility model relates to the technical field of door wall structures, in particular to a door wall partition structure capable of being quickly assembled and disassembled. A slot is formed in the wall profile; a wall material pressing strip is arranged on the inner wall of one side of the inserting groove. The other side of the slot is detachably connected with a decorative profile; and the decorative profile and the wall material pressing strip are respectively pressed on the front side surface and the rear side surface of the plate. When the door wall structure is used, the door wall structure is convenient to disassemble and assemble, and the construction difficulty of the door wall is reduced.
Owner:ZHONGSHAN LENS HOME CO LTD

Baking-free brick and preparation method thereof

PendingCN120271276ABrickProcess engineering
The invention provides a baking-free brick and a preparation method thereof. The baking-free brick is prepared from the following raw materials in parts by weight: 850-1700 parts of recycled fine aggregate, 125-250 parts of cement, 25-50 parts of waste concrete recycled micro powder, 100-200 parts of water and 6-12 parts of a water reducing agent, and the recycled fine aggregate is waste concrete recycled fine aggregate or / and steel slag recycled fine aggregate. The preparation method comprises the steps of mixture preparation and baking-free brick preparation. The baking-free brick is generally used as a novel wall material to be applied to buildings or paved on road surface layers, the problem of recycling of waste concrete can be solved, and the application direction of the waste concrete is expanded.
Owner:MCC ENERGY SAVING & ENVIRONMENTAL PROTECTION +1

Novel wall material production slot milling machine

The invention discloses a novel wall material production slot milling machine, and belongs to the technical field of building wall material manufacturing, the novel wall material production slot milling machine comprises a machine body, a shielding part is arranged on the outer side of a slot milling piece, the shielding part comprises a movable frame slidably arranged on the outer side of the slot milling piece in a sleeving mode, a moving groove is formed in the upper end of the movable frame in a penetrating mode, and the slot milling piece is slidably connected into the moving groove; the movable frame and the groove milling piece move synchronously, the groove milling piece and a stone machining area are wrapped all the time, the position of the movable frame can be correspondingly adjusted when the groove milling position of stone is replaced by the groove milling piece, the stone machining area can be adjusted, and the stone machining efficiency is improved. The movable frame, the main baffle and the side baffles cover the stone groove milling position all the time, stone splashing caused by edge breakage in the stone groove milling process is avoided, the safety of a groove milling piece in the working process is improved, and other structures above a machine body are prevented from being damaged due to stone splashing.
Owner:YANGZHOU ZESHUN NEW TECH BUILDING MATERIALS CO LTD

Decorative strip for covering seams in building walls and its use and installation method

The present invention discloses a decorative strip for covering seams in building walls and a method for using and installing the same. The decorative strip comprises a covering plate a and a tongue strip b, wherein the tongue strip b is fixedly mounted on the covering plate a. The tongue strip is provided with a tensioning structure c, wherein the tensioning structure c is a single tensioning structure or a composite tensioning structure. The decorative strip also comprises a decorative panel d, wherein both ends of the decorative panel d are provided with clamps d1, and the decorative panel d is clamped to both ends of the covering plate a via the clamps d1 to achieve connection between the decorative panel d and the covering plate a. The decorative strip and the building wall are connected by a physical connection using an adhesive slurry or a grouting slurry that is more compatible with the building wall material and more environmentally friendly. The decorative strip comprises an L-shaped internal corner decorative strip 1, a flat decorative strip 2, an L-shaped internal corner decorative strip 3, and an L-shaped external corner decorative strip 4. The ends of the four decorative strips are connected by three connection methods: 45-degree bevel joint, 90-degree plug-in joint, or 45-degree bevel joint on three sides.
Owner:INNER MONGOLIA LOCK TYPE NEW BUILDING MATERIALS TECH CO LTD

Evaluation method for vertical difference of pollutant blocking performance of clay separating wall

The invention relates to the technical field of underground environmental pollution prevention and control of refuse landfills, in particular to a method for evaluating vertical difference of performance of blocking pollutants by a clay separating wall, which comprises the following steps: S1, measuring physical characteristic parameters of a separating wall material and migration parameters of the pollutants in the separating wall material; s2, performing stress distribution analysis on the isolation wall, and establishing a relational expression based on the physical characteristic parameters of the isolation wall material, the effective stress of the isolation wall and the depth of the wall body; s3, on the basis of the relational expression and the pollutant transport law, constructing a pollutant transport model in the depth direction of the wall body of the isolation wall; and S4, predicting the migration time of the pollutants in the clay separating wall through the pollutant migration model, and evaluating the vertical difference of the blocking performance of the separating wall to the pollutants based on the migration time difference at different depths. According to the evaluation method, accurate evaluation of the vertical difference of the antifouling performance of the isolation wall is realized, and the reliability of the evaluation result and the engineering guidance value are improved.
Owner:ZHEJIANG HUADONG CONSTR ENG

Wall plastering machine for indoor and outdoor decoration engineering

The utility model relates to the technical field of indoor and outdoor decoration, in particular to a wall plastering machine used for indoor and outdoor decoration engineering, which comprises a bottom plate, a lifting device is arranged at the top of the bottom plate, a reinforcing plate, a gear strip and a hydraulic piston cylinder are respectively and fixedly connected to the top of the bottom plate, and a fixing ring is fixedly connected to the side face of the reinforcing plate. A gear rod is slidably connected into the fixing ring, a gear base is fixedly connected to the top of a piston rod of the hydraulic piston cylinder, a rotating gear is rotatably connected to the side face of the gear base, and an adjusting device is arranged on the side face of the storage box. According to the wall scraping device, the direction of the scraping plate is adjusted by arranging the adjusting device, wall materials are extracted by arranging the pump machine, the hose and the discharging opening, and the wall materials falling in the wall scraping process are recycled by arranging the recycling box and the recycling groove below the material storage box.
Owner:HUBEI DISCO CONSTRUCTION CO LTD

Multi-stage grinding device for light microcrystalline plate surface

The utility model relates to a multi-stage polishing device for building wall material plate surfaces, which comprises a belt conveyor, a camera, a control system and a door frame arranged above the belt conveyor, and knife rests are respectively arranged on two sides of a cross beam of the door frame along the conveying direction; the knife rest comprises a sliding plate and a lifting plate, the sliding plate is connected with the cross beam through a sliding rail, and the sliding plate is connected with the lifting plate through a sliding rail; each lifting plate is provided with a lifting system used for controlling the lifting plate to move up and down and a grinding system used for grinding plates. A swing system is arranged on the cross beam and comprises a third motor arranged above the cross beam, a gear coaxially connected with the output end of the third motor and racks arranged on the two sides of the gear, and the racks are fixedly connected with the sliding plates of the adjacent tool rests respectively. The control system collects data transmitted by the camera to control the rotating speeds of the belt conveyor motor, the swing system motor, the grinding system motor and the lifting system motor. The multi-stage polishing device achieves multi-stage polishing and is better in polishing effect.
Owner:LUOYANG NORTH GLASS SINEST TECH CO LTD

An automated hydroelectric trenching system and method

This invention discloses an automated hydropower trenching system and method. The system includes a mobile support mechanism, a hydraulic device, a control box, a dust collector, a rotating mechanism, and a front-end construction trenching device. The front-end construction trenching device includes a dust cover, a trenching machine, and a sensing probe. The control box includes a setting unit, a speed control unit, a positioning and scanning unit, and a posture control unit. The positioning and scanning unit is communicatively connected to the sensing probe. The setting unit calculates the trenching depth and width by transmitting commands. The positioning and scanning unit determines the wall material and construction position, and feeds back the scanned wall material to the speed control unit. Simultaneously, the positioning result is fed back to the posture control unit. The speed control unit regulates the motor speed of the trenching machine, and the posture control unit controls the position of the mobile support mechanism, the height of the hydraulic device, and the rotation angle of the rotating mechanism, respectively, to achieve automated and high-precision hydropower trenching operations.
Owner:CHINA FIRST METALLURGICAL GROUP

Novel all-round wall brick

PendingCN121497033AWallsBrickAdhesive
The invention relates to the technical field of building wall materials, and discloses a novel all-round wall brick which comprises a brick body. At least one longitudinal through round hole and at least one transverse semicircular hole are formed in the brick body, and the semicircular holes, close to each other, of the brick bodies which are stacked up and down form a round hole; the novel all-round wall brick has the remarkable advantages that the inner surface and the outer surface of the novel all-round wall brick are provided with matte or customized textures, the novel all-round wall brick can be directly decorated, and extra decoration is omitted; the internal round hole has the functions of pipeline hiding and structural column formwork frame, grooving is not needed, and construction is simplified. The tenon-and-mortise structure is matched with the binder for reinforcement, the integrity of the wall is improved, brick connection is tight and seamless, and cooperation with a building main body is achieved. The modular design is accurate in positioning and efficient in masonry, the dead weight of the brick body is reduced, and the comprehensive cost of the building is greatly reduced.
Owner:GUANGXI HENGSHENG NEW MATERIAL TECHNOLOGY CO LTD

A method for preparing sintered bricks using recycled fine aggregate from construction waste.

ActiveCN122127130BAggregate (composite)Brick
This invention belongs to the technical field of solid waste resource utilization and novel wall materials, and discloses a method for preparing sintered bricks using recycled fine aggregate from construction waste. The invention involves removing impurities, crushing, and screening construction waste to separate recycled fine aggregate components with different material properties. Each component undergoes adaptive modification treatment based on its material properties. The modified multi-component aggregates are then mixed to obtain composite recycled fine aggregate, which is then combined with flux and binder to prepare the slurry. The finished sintered bricks are obtained through aging, pressing, gradient drying, and sintering cooling processes. This invention effectively solves the problems of insufficient raw material compatibility, poor batch performance stability, and difficulty in balancing performance and environmental emissions under high-content recycled aggregate conditions in existing technologies. It improves the resource utilization rate of all components of construction waste, has strong industrial adaptability, and possesses good environmental benefits and application promotion value.
Owner:HUAIAN CONSTR ENG QUALITY TESTING CENT CO LTD

Method for preparing sintered bricks from heavy metal contaminated soil

PendingCN121850596AClaywaresBrickCoal gangue
The invention relates to the technical field of soil remediation, and particularly discloses a method for preparing sintered bricks from heavy metal contaminated soil, and the method comprises the following steps: mixing the heavy metal contaminated soil with coal gangue, fly ash and desulfurized gypsum, and carrying out crushing, aging, compression molding and high-temperature sintering to prepare the sintered bricks. Through single factor and orthogonal test optimization, the optimal process parameters are determined as follows: the additive amount of the polluted soil is 40%, the sintering temperature is 800 DEG C, and the heat preservation time is 10 h. The sintered brick prepared by the invention can effectively fix heavy metals such as Cd, As, Pb and the like in soil, the leaching concentration of the sintered brick is far lower than the GB / T 35605-2017 limit value of Wall Materials for Evaluation of Green Products, and safe disposal and resource utilization of the heavy metal contaminated soil are realized.
Owner:XUZHOU ZHENFENG NEW TYPE WALL MATERIAL CO LTD +1

Hole punching tool

The present article relates to a hole drilling tool used when attached to a hand-held electric drill to drill holes in wall materials made of wood, gypsum board, etc. Referring to the reference diagram of the usage state, the present article includes a cylindrical main body having a contact portion that contacts the wall material to be drilled, and a drilling blade that transmits the drive of the hand-held electric drill and drills holes in the wall material. The main body has an adjusting portion for adjusting the protruding amount of the drilling blade, and the protruding amount of the drilling blade can be adjusted according to the thickness of the wall material by the adjusting portion and then used.
Owner:MIRAI KOGYO KK