120 results about "Cement mortar" patented technology

This utility model discloses a prefabricated drainage ditch installation device with a guiding and positioning structure, comprising: a base layer, a bottom plate at the bottom of the base layer, and a support plate for supporting the whole; the inner surface of the base layer is filled with a layer of cement mortar, and the inner end of the upper surface of the base layer is provided with a plurality of positioning holes at equal intervals from front to back; the bottom end of the cement mortar layer is provided with a bottom plate, and the upper surface of the bottom plate is provided with adjustment grooves on both the left and right ends; the upper surface of the bottom plate is provided with side plates on both the left and right ends; the bottom outer end of the side plate is fixedly connected with a connecting protrusion, and the bottom upper surface of the side plate is provided with a connecting groove; the inside of the connecting groove is engaged with the bottom end of the support plate. This prefabricated drainage ditch installation device with a guiding and positioning structure can guide and position the drainage ditch before pouring cement into it, avoiding installation failure and material waste.

The utility model belongs to the technical field of building engineering, specifically discloses a heavy nonferrous metal smelting engineering existing pool anticorrosive and anti -infiltration structure. The reinforced concrete bottom plate and lateral wall of structure are closed into pool, the surface of reinforced concrete bottom plate is equipped with waterproof coating, geotextile I, high density polyethylene geomembrane, geotextile II, fine stone concrete layer, epoxy glass steel isolation layer and anticorrosive surface layer in proper order, the surface of reinforced concrete lateral wall is equipped with waterproof coating, geotextile I, high density polyethylene geomembrane, geotextile II, polymer cement mortar layer, epoxy glass steel isolation layer and anticorrosive surface layer in proper order, the layer of aforementioned same name of reinforced concrete bottom plate and lateral wall surface, geotextile and geomembrane correspond to head -tail link, and fine stone concrete layer and polymer cement mortar layer correspond to head -tail link. The utility model has the characteristics of simple structure, convenient construction, good anticorrosive and anti -infiltration performance and low cost.

This is a PVP and agar-based hydrogel that can be chemically synthesized using a radical initiator and added to the preparation of hydraulic mineral binders to improve drying, reducing premature cracking and autogenous cracking of Portland cement mortars and improving mechanical properties and non-evaporable water content in cement mortars.

This utility model relates to the technical field of cement mortar specimen curing equipment, and more specifically, to a cement mortar specimen curing cabinet, comprising a cabinet body, wherein multiple drawers are movably arranged inside the cabinet, and each drawer has multiple positioning holes for cement mortar specimens to pass through, with intervals between the positioning holes. Each drawer has a drain outlet and a water inlet, and the cabinet body is equipped with an air conditioner for controlling the temperature inside the cabinet. The cement mortar specimens are placed in the positioning holes, thereby ensuring sufficient spacing between the cement mortar specimens.

This utility model discloses a concrete pipe pile for recycling and reusing excess slurry, relating to the field of excess slurry recycling technology. The concrete pipe pile for recycling and reusing excess slurry includes a main pipe, a diversion mechanism, and a collection mechanism. The diversion mechanism includes a slot and a diversion pipe disposed within the main pipe. The slot is formed on the inner wall of the main pipe. The collection mechanism includes a base plate disposed on the main pipe and a fixing ring disposed within the base plate. The fixing ring is fixedly connected to the bottom inner side of the base plate. This mechanism stores excess cement mortar between the base plate and the fixing ring. When excess cement mortar needs to be recycled, it can be removed by pulling out the plug. This design effectively reduces cement mortar waste and avoids the need for workers to shovel away excess cement mortar. Furthermore, the detachable design facilitates the recycling and reuse of this device.

This application relates to a sawtooth-shaped post-cast strip structure in the field of reinforced concrete structures. It includes a foundation, multiple concrete slabs, and a post-cast strip. The concrete slabs are cast on the foundation, with gaps between adjacent slabs. Cement mortar is poured into these gaps to form the post-cast strip. Multiple protruding strips (first type) are provided on the sidewalls of the concrete slabs, with their length direction horizontal and spaced vertically. Multiple protruding strips (second type) are provided on the sidewalls of the post-cast strip, with their length direction horizontal and spaced vertically. The protruding strips (first type) and (second type) interlock with each other. This application improves the tightness of the connection between the concrete slabs and the post-cast strip.

This invention discloses an insulated wall structure, comprising a wall body with an exterior decorative layer on its outer surface. The key feature is that, on the inner side of the wall body, between upper and lower floor slabs, an inner cement mortar layer, an insulation board, an outer cement mortar layer, and an interior decorative layer are sequentially arranged outwards. A fixing frame, extending vertically along the entire inner wall surface, is embedded in the inner cement mortar layer, and the insulation board is fixed to the fixing frame. This invention achieves wall insulation without adding additional thermal bridges, and better prevents hollow areas, detachment, and cracking. The wall structure exhibits higher forming strength and quality, resulting in better insulation performance.

This invention discloses a method for predicting the air content of hardened cement mortar, comprising: obtaining the mix proportion of cement mortar, wherein the raw materials of the cement mortar include cement-based cementitious materials, water, sand, and admixtures, and the mix proportion is 1:w:x:y, where w is the amount of water, x is the amount of sand, and y is the amount of admixtures; obtaining the density of the raw materials of the cement mortar; obtaining the trend of the cumulative water absorption of sand over time; testing the apparent density of the cement mortar mixture; testing the setting time of the cement mortar; calculating the first water absorption rate and the second water absorption rate of sand; calculating the hysteretic water absorption of sand; and calculating the air content of the hardened cement mortar. This invention solves the problem of inaccurate or untimely detection of the air content of cement mortar by introducing the hysteretic water absorption of sand.

This invention discloses a construction method for a thin-layer rubber-reinforced structure for a tunnel invert arch, comprising the following steps: Step 1, spraying concrete onto the initial support of the invert arch and leveling it to form a cement mortar leveling layer; Step 2, laying multiple rings of rubber-reinforced layers sequentially along the tunnel direction from the end onto the cement mortar leveling layer to form a rubber-reinforced layer structure. Each ring of the rubber-reinforced layer includes multiple polyurethane foam boards connected sequentially in the ring direction. A rectangular hole is formed in the center of each polyurethane foam board, and a rubber vibration damping pad is nested within each rectangular hole; Step 3, laying a waterproof sheet on top of the rubber-reinforced layer structure from Step 2; Step 4, pouring invert arch concrete onto the waterproof sheet. This method utilizes a rubber-reinforced layer structure, integrating vibration damping and load-bearing functions, which can absorb a large amount of energy from seismic dynamic loads and reduce the risk of structural resonance.

The utility model discloses a kind of outer wall waterproof structures, including wall, first waterproof component, drainage component and second waterproof component, first waterproof component is arranged on the outer surface of wall, drainage component is arranged at first waterproof component, and second waterproof component is arranged on the surface of drainage component;Drainage component includes cement mortar layer, drainage module and drainage module, the cement mortar layer is laid on the surface of first waterproof component, drainage module is embedded in cement mortar layer, and drainage module is arranged on the surface of cement mortar layer;The outer wall waterproof structure of the application forms double-layer waterproof structure on the surface of wall by first waterproof component and second waterproof component, reduces the possibility of wall water seepage, and water splashed to the surface of wall can be gathered and guided to discharge by drainage module, water seeped into cement mortar layer can be drained by drainage module, thereby greatly reducing the possibility of moisture penetrating wall into indoor, effectively improving the waterproof performance of wall.

The application discloses a repairing device and process for repairing concrete bulges, burst points and corrosion, and belongs to the technical field of repairing concrete members. The process comprises the following steps: removing the putty layer on the surface of the concrete member to be repaired; checking the bulge points of the concrete base layer, removing the loose concrete by chiseling, and cleaning the loose concrete; chiseling the surface of the concrete base layer, washing the surface of the concrete base layer by using a high-pressure water jet, spraying or smearing polymer modified cement mortar, repairing the chiseled pits, pressing alkali-resistant glass fiber mesh cloth, and smearing the surface flat. The repairing process can completely remove the hidden troubles of the bulges and burst points, clean the loose concrete by chiseling, and make the polymer modified cement mortar better adhere to the surface. The alkali-resistant glass fiber mesh cloth further enhances the surface crack resistance, and greatly enhances the surface structure stability of the repaired concrete member.

The application discloses a modified basalt fiber reinforced self-leveling mortar and a preparation method thereof, and relates to the technical field of cement mortar. The modified basalt fiber reinforced self-leveling mortar comprises the following raw materials in parts by weight: 18-22 parts of ordinary Portland cement, 6-10 parts of fast-hardening sulphoaluminate cement, 4-8 parts of gypsum, 35-45 parts of quartz sand, 15-20 parts of calcium carbonate, 0.5-1 part of modified basalt fiber, 2-4 parts of redispersible latex powder, 0.05-0.1 part of cellulose ether, 0.05-0.2 part of defoaming agent, 0.1-0.2 part of retarder and 0.1-0.3 part of water reducing agent. The modified basalt fiber reinforced self-leveling mortar prepared by the application has excellent fluidity, fluidity retention rate, tensile bonding strength, 28d compressive strength, 28d flexural strength and dimensional stability.

The utility model discloses a kind of connection structure of ALC board and prefabricated square steel column, including concrete beam, prefabricated square steel column, prefabricated ALC board;The concrete beam is equipped with reinforced cage, steel plate embedded part and vertical steel plate, steel plate embedded part is connected with reinforced cage using welding, vertical steel plate is connected with steel plate embedded part using welding;High-strength bolt connection is used in the upper portion of the prefabricated square steel column and vertical steel plate, lower portion is connected with steel plate embedded part using welding, and outer wall is equipped with angle steel, angle steel is connected with prefabricated square steel column using welding;The outside of the prefabricated ALC board is equipped with reserved hole, angle steel is connected using hook bolt, foam agent is filled between plates, fireproof type is connected with prefabricated square steel column using self-tapping bolt, rock wool and fireproof sealant are filled between plates, reserved hole is filled using cement mortar.The utility model has the advantages of convenient construction, fast speed, excellent fireproof performance, environmental protection and durability, which is beneficial to the guarantee of construction quality.

The present application relates to a kind of reinforcing methods of concrete large slab beam, belong to industrial building concrete structure reinforcing technical field, mainly is applied in steel mill blast furnace iron discharge platform structure, disclose a kind of beam bottom opening, cut off the reinforcing method of concrete large slab beam before main reinforcement, this method includes the following steps: in the concrete column and beam of large slab beam both ends predetermined position drilling, install joint plate, joint plate is fixed on the concrete column and beam by tie bolt, after installing joint plate, install steel tie rod, steel tie rod is connected with joint plate by welding method, the gap between steel tie rod and drilling is filled with cement mortar, after installing steel tie rod, install intermediate strut and tensioning device in predetermined position, after all installation is completed, using tensioning device to tension steel tie rod.The reinforcing method of the present application is easy to install, simple to operate, can guarantee that original structure and newly added steel tie rod are under common stress, so as to reach the bearing capacity before beam bottom of large slab beam is not opened hole.

The utility model belongs to the field of aggregate intensification, specifically is a kind of recycled concrete aggregate intensification equipment, including base;The top of base is fixedly connected with agitator tank, the top of agitator tank is provided with pulverizer box, the inboard of pulverizer box is rotatably connected with pulverizing shaft, the bottom of pulverizer box is communicated with agitator tank, the top of agitator tank is fixedly connected with motor, the output of motor is fixedly connected with grinding column, and the agitator tank is rotatably connected with grinding column;By pulverizer box and pulverizing shaft, concrete aggregate can be first pulverized, so that aggregate is more easily ground, by grinding column driving second grinding rod to rotate, cooperate with the first grinding rod of agitator tank inboard, aggregate rotary extrusion is ground, realize aggregate grinding intensification, by screen plate screening aggregate, remove old cement mortar in aggregate, increase the quality of aggregate grinding and discharge.

The application discloses a cement flow tester, which comprises a jump table disc and a blocking ring. The jump table disc has a testing area. The blocking ring is configured to rotate relative to the jump table disc to form a testing state of being stacked on the jump table disc and a waiting state of being arranged at an angle with the jump table disc. The blocking ring has an inner space to arrange the testing area coaxially in the inner space in the testing state. The blocking ring comprises an inner side wall formed in the inner space, and a replaceable water absorption part is arranged around the inner side wall. The water absorption part is configured to absorb water and form a dark water stain on the surface after contacting the cement. The application solves the technical problems of cement mortar body overflow of the conventional tester and inability to trace and quantify the severity of eccentricity or side slip.

This invention discloses a method for treating the joints of GRC decorative panels, belonging to the field of building construction technology. The method includes base layer pretreatment, integrated sealing and buffering joint filling, interface construction, and composite reinforcement layer construction. Specifically, an XPS extruded polystyrene strip is placed and retained at the bottom of the joint to form a buffer layer, while M15 cement mortar mixed with a micro-expansion agent is filled in. After the joint filling layer dries, alloy joint adhesive is alternately applied and woven geotextile is pasted to form a three-adhesive, two-textile composite reinforcement layer, with each layer extending at least 5cm to both sides. This invention constructs a gradient deformation coordination structure combining a rigid joint filling layer, an elastic buffer layer, and a flexible reinforcement layer, effectively solving the problems of cracking and detachment in traditional joints. It has advantages such as excellent crack resistance, simple construction, and good durability, and is suitable for joint treatment of GRC decorative panels in prefabricated buildings.

The application discloses a processing and construction method of airport runway stone recycled decorative plate, which comprises runway stone raw material debarking and cutting, runway stone standard plate front surface glue coating, hole filling glue used for glue coating contains heat-sensitive microcapsule hole filling agent, on-site paving construction of the runway stone recycled decorative plate is carried out by using cement mortar, expansion joint is opened and filled, and the decorative plate is mechanically polished and polished, etc. In the application, the heat-sensitive microcapsule hole filling agent is added into the hole filling glue, the microcapsule releases the hole filling agent in the mechanical polishing process after the recycled decorative plate is installed, the gap is filled again, the water absorption of the runway stone recycled decorative plate is reduced under the premise of not increasing the processing and construction procedures, and meanwhile, the polishing gloss is ensured.

The utility model belongs to pipeline construction technical field, concretely is a kind of pipeline laying grouting device, including grouting machine body, the grouting machine body is connected with storage hopper, the grouting machine body is fixedly connected with a pair of support column, the grouting machine body is fixedly connected with a pair of support plate, the support column and support plate are fixedly connected, the support plate is fixedly connected with agitator tank, multiple stirring rods are fixedly connected on rotating shaft, can directly mix and put into storage hopper inside raw materials such as cement mortar in use process, reduce the case that it is more troublesome to manually mix or mix after using other instruments again, transfer to storage hopper inside, simultaneously, the control box set on grouting machine body can quantitatively control the dosing outlet to put into storage hopper inside mortar cement, so that the mortar cement not being put continues to be stored in agitator tank and is stirred, reduce the case that mortar cement solidification occurs when the mortar cement in storage hopper is more when putting once.

The utility model relates to the technical field of hydraulic engineering, and disclose a river slope reinforcing device for hydraulic engineering, including dam body, the one side of dam body near river course is provided with a series of equidistance and is provided with several prefabricated baffle, two adjacent prefabricated baffles are fixed through connecting assembly and dam body, the one side of dam body near river course is provided with several planting module, the planting module of vertical one is fixed with dam body through fixed component, the watering assembly of watering to the inside planting module is all provided on each fixed component, passes through the installation hole and the geotextile that lays on the soil of two connecting rods, and inserts to the backfill soil, the connecting block is located in two adjacent rectangular holes at this moment, and two adjacent rectangular holes are sealed, the gap between new prefabricated baffle and old prefabricated baffle and the gap between connecting block and new and old prefabricated baffle are all blocked through cement mortar, only need to replace the damaged prefabricated baffle to reduce the repair cost.

The application discloses a kind of high corrosion-resistant flue modular intelligent installation method, belong to flue installation technical field, its technical scheme key points are as follows: a, at floor flue installation port, by preformed part installs a connecting frame, with building cement mortar connecting frame and floor gap filling seal;‌B, the entire flue is designed into multiple flue modules, then is transported to the installation port of each flue and is installed;C, the bottom end of each flue module is placed to the connecting frame in the flue installation port close to lower floor, and the vertical degree of flue is adjusted by the positioning of connecting frame to flue module;D, after the vertical of flue module, the top end of flue module is abutted with the connecting frame in the flue installation port close to upper floor;E, using building cement mortar respectively fills the gap between flue module and two connecting frames, completes the installation of flue.The kind of scheme simple operation and intelligent convenient, improve the installation efficiency of corrosion-resistant flue.

The utility model relates to the technical field of building engineering provides an indoor wall building cement mortar uniform smearing robot, lift motor unit, lifting frame unit and mobile electric box unit are installed on carrier part and limit wheel group unit and gyro wheel group unit are installed on mobile electric box unit unit, are used for realizing the rise and fall of smearing part and guniting part, positioning part includes installing vertical positioning unit on the top of elevator part, installing horizontal positioning unit on mobile electric box unit, guniting part includes mobile guniting unit installed on mobile electric box unit top, flatness scanning unit is installed on the upper portion of mobile guniting unit, is used for marking crack position and carrying out horizontal guniting operation, smearing part includes the magnetic attraction rotary circular knife unit connected with guniting part and mobile sliding rail unit is installed on mobile electric box unit. The utility model can make cement mortar smearing more uniform, and the smearing disc can be replaced, and the application range is expanded.

The utility model discloses a weak current dark box for comprehensive wiring engineering relates to weak current dark box field, including the dark box main part, two limit components are fixed and installed on the top wall of dark box main part symmetry, and limit component is composed of fixed base plate and contraction spring, and the inner end of fixed base plate is fixedly installed with contraction spring, and two support components are slidably installed in the dark box main part, and support component is slidably installed on limit component, through setting limit component, support component and fixed component in the dark box main part, through setting limit component, support component and fixed component in the dark box main part, through fixed component can push support component outward to make support component rest on the inner wall of the recess of dark box main part, and then the dark box main part is pre -fixed, and the design effectively solves the dark box main part displacement problem caused by cement mortar uneven filling, solidification time is long and the shrinkage deformation in traditional craft.

This invention relates to a nanocrystalline cellulose-modified cement mortar composite material and its preparation method, comprising the following steps: (1) purifying and oxidizing commercial microcrystalline cellulose to obtain nanocrystalline cellulose; (2) dispersing the nanocrystalline cellulose in an aqueous solution; and (3) mixing the nanocrystalline cellulose dispersion with cement and standard sand to obtain the nanocrystalline cellulose-modified cement mortar composite material. The composite material prepared by this invention uses hydrogen peroxide to oxidize and modify the nanocrystalline cellulose, increasing the hydroxyl content to improve mechanical properties and to a certain extent solving the problem of nanocrystalline cellulose agglomeration. An appropriate amount of nanocrystalline cellulose can improve the hydration degree of cement paste through hydroxyl water absorption and complexation reactions, optimize the composition of hydration products, reduce the porosity of cement mortar, reduce damage cracks, and improve the mechanical properties of cement mortar.

The utility model discloses a prestressed steel strand tensioning construction quick butt joint device, solves the problem of bad clamping force between steel strand and clamping piece in the prior art. The device comprises an outer shell, a locking piece, a compression block and a gasket, the middle section of the outer shell is a conical cylinder gradually flared from the lower section to the upper section; the locking piece is located in the inner cavity of the upper section, and the needle-shaped body in the locking piece faces the small end of the conical cylinder, the compression block is mechanically fastened to the outer shell and axially fixed to the locking piece through the gasket arranged therebetween. By dispersing at the end of the steel strand and fixing the end under the action of the cement mortar and the locking piece and the compression block, after fixing, the dispersed steel wires are evenly distributed inside the outer shell and form a conical body, the tensile strength reaches and exceeds 100% of the ultimate strength of the steel strand itself, and the construction qualification rate is close to 100%.

The utility model relates to a cement mortar bagging machine, when bagging is completed, the packaging bag inlet is sealed through the packaging machine body, then the pushing mechanism is operated, the pushing mechanism pushes the packaging bag to the discharge mechanism direction, then the lower plate rotates under the pressure of the packaging bag, the lower plate drives the reset elastic member to rotate, makes the upper plate and lower plate synchronous rotation 90 DEG, and parallel with the material support, then continues operating the pushing mechanism, makes the pushing mechanism push the packaging bag to the conveying mechanism, then operates the conveying mechanism, makes the conveying mechanism convey the packaged cement mortar to the outside of the device, when needing to discharge the packaged cement better, can operate the first linear drive part, makes the first linear drive part drive the upper plate to remove, makes the upper plate remove to the chute inside, then operates the pushing mechanism to push out the packaging bag again, thereby reduces the stroke of the pushing mechanism.

This utility model discloses a molding device for preparing ultra-high performance concrete using continuous fibers, including a fixed frame, a arranging component, a laying component, a spraying component, and a compaction component. The arranging component is disposed on the fixed frame and is used to arrange multiple strands of continuous fibers into an array structure with consistent spacing and uniform direction. The laying component is disposed on the fixed frame, with its feed end facing the discharge end of the arranging component, and is used to lay the arranged multiple strands of continuous fibers into a concrete mold. The spraying component is disposed on the fixed frame and is located on both sides of the laying component, and is used to spray cement mortar onto the multiple strands of continuous fibers laid into the concrete mold. The compaction component is disposed between the laying component and the spraying component and is used to compact the continuous fibers sprayed with cement mortar.