638results about How to "Short maintenance time" patented technology

The invention discloses a water permeable brick and a preparation method thereof. The water permeable brick comprises two parts, namely a surface layer and a base layer, wherein the material of the surface layer is prepared from the following components in percentage by mass: 60-70% of ceramic sand, 15-20% of sand and 15-20% of cement, and in addition to the solid components with the sum of 100% in percentage by mass, water accounting for 50-60% by mass of cement is further added; and the material of the base layer is prepared from the following components in percentage by mass: 45-65% of building silt unburned ceramsite, 10-15% of cement, 5-10% of fly ash, 10-15% of melon seed-shaped drug slices and 10-15% of sand, and in addition to the solid components with the sum of 100% in percentage by mass, the water accounting for 30-40% and a water reducer accounting for 1-1.5% relative to total mass of the cement and the fly ash are further added. The water permeable brick disclosed by the invention is prepared by using the building silt unburned ceramsite to replace natural aggregate or calcined ceramsite, on one hand, the using ways of the building silt unburned ceramsite can be expanded, the utilization rate of solid wastes is improved, and negative effects on an environment are reduced, and on the other hand, the obtained water permeable brick has excellent performance.

A storage/buffering system for the stocking and/or buffering of substrate and/or substrate carriers in a process environment includes a 6-axis robot. An end-effector is connected with the robot providing an additional one degree of freedom and a mechanism for grabbing and moving of substrate and/or substrate carriers. The robot is mounted in an inverted orientation to a removable service cart for easy removal of the robot to a service area in the event of breakdown. The robot receives commands from a programmable controller connected to control the robot and configured to direct the arm of the robot through a set of movements. Product is loaded in and out of the system through I/O load ports. Product is stored inside the storage/buffering system on a plurality of storage locations, each with product presence/absence detect sensor. The robot can alternatively be mounted directly to the storage system enclosure structure.

The invention provides a cement-based composite material for powder-bonding three-dimensional (3D) printing. The material is prepared from the following components in parts by weight: 1 part of cement, 0-5 parts of sand, 0-5 parts of a mineral admixture, 0-0.2 part of an expanding agent, 0-0.2 part of a toughening agent, 0-0.2 part of mineral pigment, 0.1-0.5 part of water, 0-0.25 part of polymer emulsion, 0.001-0.05 part of an additive and 0-0.03 part of fibers, wherein the cement is selected from one or a mixture of more in silicate cements, sulphoaluminate cement, high belite sulphoaluminate cement, aluminate cement, fluoroaluminate cement, aluminosilicate cement, phosphate cement or magnesium oxide cement; the additive is selected from one or a mixture of more in a water reducing agent, an early strength agent or a coagulating regulating agent. After being contacted with water, the cement-based composite material can be hardened, thus not needing a great deal of polymer adhesive; the cement-based composite material is rapid and controllable in hardening speed; the cement-based composite material is small in deformation in the hardening process, thus being suitable for a powder-bonding 3D printing technology. The invention also provides a method for carrying out powder-bonding 3D printing by using the cement-based composite material.

The invention discloses a high-performance epoxy bitumen mixture easy to construct and maintain, comprising four components of A, B, C and D. The high-performance epoxy bitumen mixture easy to construct and maintain is characterized in that the component A mainly comprises epoxy resin, a toughening agent, an accelerating agent and a diluent agent; the component B mainly comprises a curing agent, an accelerating agent, a compatilizer and a diluent agent; the component C comprises bitumen; the component D comprises aggregates and mineral powder, wherein the ratio of the component A to the component B is 100:50 to 100:100; the ratio of the sum of the component A and the component B to the component C is 100:100 to 100:160; and the ratio of the sum of the component A, the component B and the component C to the component D is 6:94 to 7:93. The high-performance epoxy bitumen mixture easy to construct and maintain has the characteristics of excellent mechanical property, temperature resistance, water resistance, solvent corrosion resistance, fatigue durability, simple construction process and short maintenance time. The high-performance epoxy bitumen mixture easy to construct and maintain is suitable for paving and maintenance of road surfaces, such as steel bridge floors, cement concrete bridge floors, tunnels, expressways and the like. The invention also discloses a preparation method of the high-performance epoxy bitumen mixture easy to construct and maintain.

An inorganic water paint rich in Zn for steel contains the component A prepared from Zn powder, thickening agent and filler and the component B prepared from mixed silicon sol, deposition resistant, emulsion, surfactant and assistant. Its advantages are high resistance to salt fog and ageing, low cost and no environmental pollution.

The invention belongs to a treatment method of solid waste in environmental engineering, and particularly relates to a method for curing lake dredged sediment containing heavy metal. The method is characterized by comprising the steps of adding a curing agent prepared from waste gypsum, coal ash and cement in a mixing manner to lake dredged sediment containing heavy metal, evenly stirring, and covering a plastic film on the surface for molding for 1-3 days; and maintaining for 2-10 days under the conditions that the temperature is 20+/-(3-6) DEG C and the relative humidity is 70-100% to obtain a solidified clod of which the unconfined compression strength is greater than or equal to 170.6kpa, wherein the weight ratio of the waste gypsum to the coal ash to the cement is 1 to (0.5-10) to (1-15); and the adding amount of the curing agent is 3-20% of mass of the lake dredged sediment containing the heavy metal. Industrial wastes such as the coal ash, the waste gypsum and the like are taken as curing agent materials of heavy metal polluted sediment; and resource utilization of the wastes such as the polluted sediment, the coal ash and the waste gypsum is achieved, so as to achieve the target of treatment of wastes with processes of wastes against one another.

The invention discloses a steam-curing-free early-strength steel fiber concrete pipe segment comprising ordinary Portland cement, early-strength sulphoaluminate cement, fly ash, slag, fine aggregate, coarse aggregate, water, a polycarboxylic acid type water reducer and end hook type steel fibers. The invention also discloses a preparation method of the steam-curing-free early-strength steel fiber concrete pipe segment. The steam-curing-free early-strength steel fiber concrete pipe segment is quick in coagulation and hardening and high in early strength, can reach the strength of 15MPa required by pipe segment demolding in 6-8 hours, and can be prepared into a concrete pipe segment for an underground structure by performing water curing in a 20 DEG C saturated calcium hydroxide solution for 24 hours and then performing natural curing for 28 days. The steam-curing-free early-strength steel fiber concrete pipe segment does not need steam curing, so that the curing mode of the pipe segment can be simplified, the curing time is shortened, a lot of manpower and resources are saved, and the popularization and application values are high.

Techniques disclosed herein include an electro-chemical deposition apparatus that provides an efficient circulation system, chemical management that provides reliable and uniform plating, and a configuration that provides short maintenance times and greater tool availability. Techniques include a processing tank containing an anolyte fluid, and one or more plating cells each having a catholyte fluid compartment with a circulation path that connects to a separate or remote catholyte reservoir. Thus, with such a configuration, a single pump can be used to flow catholyte (via manifolds) through one or more plating cells. Thus, with the catholyte reservoir maintained off board, instead of dumping catholyte over a weir into a reservoir, catholyte fluid—after flowing through a plating cell—is returned to the catholyte reservoir.

The present invention provides a secondarily-curable polyurethane modified epoxy asphalt mixture which is prepared by mixing 2-8 parts by mass of polyurethane modified epoxy asphalt with 92-98 parts by mass of mineral aggregates; the polyurethane modified epoxy asphalt consists of a component A, a component B, and a component C, wherein the component A is 100 parts of polyurethane modified epoxy resin; the component B consists of the following substances in parts by mass: 70-150 parts of a curing agent and 0-0.02 parts of an accelerator; and the component C is 50-200 parts of asphalt. The secondarily-curable polyurethane modified epoxy asphalt mixture provided by the present invention is suitable for paving a steel bridge deck and a cement concrete bridge deck and paving and repairing an asphalt pavement, and is used for special road sections such as an intersection and a bus stop.

The invention relates to a cold mixed epoxy resin material, which comprises components A and B, wherein the component A mainly consists of epoxy resin and a reactive diluent, and the component B mainly consists of a flexible curing agent, an accelerating agent, a defoamer, a thinner, a thixotropic agent and a toughening agent; and the mass ratio of component A to component B is (100:200)-(100:350), and the components are mixed with an aggregate and mineral powder to obtain a cold mixed epoxy resin mixture, wherein the mass ratio of the sum of components A and B to component C is (6:94)-(7:93). The cold mixed epoxy resin material has excellent mechanical property, temperature resistance, water resistance, solvent resistance and fatigue resistance, and in addition also has the characteristics of being environment-friendly, low-carbon, simple in construction process, and short in curing time. The cold mixed epoxy resin material is mainly applicable to patching of epoxy asphalt road surfaces, and at the same time is also applicable to paving of road surfaces of high-grade highways, tunnels, airfield runways, cement concrete bridge floors and the like. The invention discloses a preparation method of the cold mixed epoxy resin material.

An electrochemical deposition system having two or more electrochemical deposition modules arranged on a common platform and configured for depositing one or more metals on a substrate is described. Each electrochemical deposition module includes an anode compartment configured to contain a volume of anolyte fluid, a cathode compartment configured to contain a volume of catholyte fluid, and a membrane separating the anode compartment from the cathode compartment. Each electrochemical deposition module further includes a workpiece holder configured to hold opposing edges of a flexible workpiece between first and second leg members via a clamping mechanism, and a loader module configured to position the flexible workpiece in the workpiece holder while holding the flexible workpiece using an air cushion on each opposing planar surface of the flexible workpiece.

The invention discloses a method for source modification treatment of fluoro-gypsum which comprises the steps of, (1) raw material selection, charging composite active triggering agent and alkaline material into the fluoro-gypsum, wherein the mass fraction of each components are, fluoro-gypsum 93-97, composite active triggering agent 1-2, alkaline material 2-5, (2) agitating and mixing, transferring to rainproof yard, stewing, (3) stacking, trickling and maintaining. The modified fluoro-gypsum is applied to cement production.

The invention relates to a treatment method of dehydrated sludge in a domestic sewage treatment plant. The treatment method comprises the following steps: evenly mixing limestone, magnesia and bauxite which are weighed in a ratio of (40%-60%):(20%-30%):(20%-30%) by weight percent and then firing for 1-2 hours at the temperature of 900 DEG C-1200 DEG C so as to obtain a sludge solidifying agent; adding the sludge solidifying agent in the dehydrated sludge in the ratio of dehydrated sludge to sludge solidifying agent of (90%-95%):(5%-10%) by weight percent, and then stirring; after evenly mixing, paving the mixture obtained in the former step to the thickness of 20-30 cm in the open air, and placing for 48 hours so as to obtain a sludge solidifying body; and finally, performing landfill treatment. According to the invention, the solidifying time is short, and the adding amount of the sludge solidifying agent is less; by using the treatment method, sludge can be modified, and the stabilization of sludge is promoted; the bulking of the sludge solidifying body is small, the stability and mechanical strength of the sludge solidifying body are high, and secondary pollution can not be caused; and the solidifying technological process is simple and convenient for operation, and the investment and treatment costs are low, thus the treatment method in the invention can be widely applied to stabilization, reduction and innocent treatments of dehydrated sludge in a sewage plant.

The invention discloses an improved solvent cold laid asphalt as well as a preparation process and using method thereof. The improved solvent cold laid asphalt is at a liquid state under normal temperature or low temperature; cold oil and cold materials can be directly blended for construction on the spot without heating, and the construction can be carried out at high/low temperature seasons and rain/snow weather, and a large number of machinery and labor are not required in the construction process, the construction is simple and convenient and the repair effect is good; traffic can be immediately opened after repair without affecting the travel of people; the improved solvent cold laid asphalt is usually used for daily maintenance, such as pot slot repair and emergency repair; meanwhile, the improved solvent cold laid asphalt has the advantages of no deterioration, no layering and the like after being stored for a long time.

The invention discloses a steel platform tower crane foundation and a construction method thereof. The steel platform tower crane foundation comprises bored piles, steel latticework columns and a steel bearing platform. The steel latticework columns are fixed on the bored piles, and the steel bearing platform comprises four steel beams, wherein two of the four steel beams are lower steel beams, and the other two steel beams are upper steel beams. The upper steel beams are fixed on the lower steel beams to form a #-shaped structure, the lower steel beams are fixed on the steel latticework columns, and a tower crane is fixed on the upper steel beams. The steel platform tower crane foundation has the advantages that the tower crane foundation steel beams are machined in a factory, preformed bolt holes are drilled in a lofting mode according to the sizes of tower crane standard section bolts, and accuracy of the bolt holes is high; on-site assembling and disassembling are convenient, the tower crane can be installed as long as the foundation is installed, and maintenance time of concrete is eliminated; in the foundation disassembling process, only the bots need to be detached for hoisting, concrete does not need to be crushed, and disassembling is convenient; disassembled steel beams can be repeatedly used, and construction cost is saved.

The invention relates to a low-shrinkage creep wet joint ultrahigh-strength concrete material and a preparation method thereof. The material comprises the following raw materials in proportion: 550kg/m<3> to 650kg/m<3> of cement, 150kg/m<3> to 250kg/m<3> of a mineral admixture, 675kg/m<3> to 825kg/m<3> of fine aggregate, 575kg/m<3>-725kg/m<3> of coarse aggregate, 10.3kg/m<3>-12.2kg/m<3> of a waterreducing agent, 78kg/m<3> to 156kg/m<3> of steel fibers, and 152kg/m<3> to 172kg/m<3> of water, wherein the mineral admixture is composed of an expanding agent and at least two of silica fume, superfine mineral powder, limestone powder, rice hull ash, metakaolin and fly ash microspheres, the coarse aggregate is any one or more of basalt, granite and diabase, the particle size is 5-10mm, and the needle sheet shape content is smaller than or equal to 1%. The low-shrinkage creep wet joint ultrahigh-strength concrete material prepared from the raw materials has the advantages of low shrinkage creep, good working performance, excellent mechanical properties, excellent durability and the like, is used for bridge wet joints, and can reduce the influence of shrinkage creep, guarantee the later durability and prolong the service life of bridges.

The invention belongs to the technical field of building materials, and in particular relates to a low negative temperature post-tensioned beam prestress pipeline mudjacking material. The material disclosed by the invention is prepared from cement, a poly-carboxylate water reducer, an anti-freezing component, a retardant component, a harness promoting component, mineral admixtures and an expanding agent through mixing and stirring; the material can be used for the construction of pipe mudjacking of a post-tensioned prestressing T beam and a continuous beam in the construction condition not lower than minus 10 DEG C; and the effect of the material is more obvious in the environment condition of shifts between positive and negative temperatures day and night. The strength of hardened mortarcan develop continuously in the conditions of low temperature and negative temperature, the maintenance time can be shortened greatly, the construction efficiency can be improved, and large energy consumption required by low and negative temperature construction can be reduced.

The present invention provides a microwave radiating device which treats a radiated material by microwave irradiation; and further provides a method of producing a sugar ingredient from a plant material.

The microwave radiating device of the present invention is equipped with an irradiating means which has a microwave radiating source, and containers which accept radiated material inside. Further, the container of the device has supply means which provides radiated material to the container, and discharge means which discharges radiated material from the container, and a microwave receiving section which makes microwaves that irradiate from radiating means, penetrate into the container through the medium of dielectric material. Further, there is provided at least one layer that is composed of non-dielectric material, between the atmosphere of the inner side and the outer side of the container. Yet, irradiating means and the above container are connected in a removable mode.