38results about How to "Long maintenance time" patented technology

A plasma processing apparatus has a vacuum container having a processing chamber in which a wafer is processed by plasma and at least one member constituting the vacuum container movable and detachable in a horizontal direction with respect to a base plate. The plasma processing apparatus includes a lifter arranged at a side of the vacuum container across the vacuum container on the base plate, coupled to an end portion on the opposite side of a vacuum transfer chamber on which the wafer is transferred in a decompressed interior, and having a vertical shaft to move the detachable member vertically. The lifter includes: a coupling portion coupled to the vertical shaft and the detachable member and moved along the vertical shaft; and a turning shaft being a joint portion arranged at the coupling portion and having a vertical rotational shaft, the detachable member being horizontally turned around the turning shaft.

The invention relates to a light steel keel and plasterboard vitrified tile decoration wall and a method for constructing the same. The light steel keel and plasterboard vitrified tile decoration wall comprises a base layer and a veneer; the base layer is formed by adhering plasterboards to at least one side of a light steel keel; level-up battens are transversely arranged on the outer surfaces of the plasterboards at intervals; the level-up battens are fixed on the light steel keel by self-tapping screws to form into a whole body with the light steel keel; and the veneer is a vitrified tile which is adhered to adjacent two level-up battens by AB adhesive which is applied to the back surface of the vitrified tile. The level-up battens arranged at intervals play a role of further leveling up and reinforcing the base surface and dispersing the influence of the wall deformation stress to the wall tiles. The adhering force of the basal body and the wall tiles is improved through the AB adhesive. The light steel keel and plasterboard vitrified tile decoration wall can be easily, conveniently and rapidly constructed. The traditional wet process work for the adhesion of the wall tiles is changed into the dry process work, thus the material is greatly saved, the high work efficiency is ensured, the labor cost efficiency is reduced, the energy is saved, and the environment can not be polluted.

The invention discloses an environment-friendly nonslip ultrathin seal material and a preparation method thereof and solves the problems that the asphalt pavement has water penetration, poor slip resistance, slightly pitted surface and small cracks. A stable durable seal is provided to protect the asphalt pavement, aggregate of an original asphalt pavement can be locked, oil shortage can be repaired, post-construction traffic opening time is short, little influence is caused to transportation, and the material herein has great technical significance and social significance; the preventive maintenance process used herein helps maintain pavement service level and retard maintenance time of extensive and medium repair, and save lifecycle maintenance cost.

The invention discloses anti-freeze and anti-cracking concrete. The anti-freeze and anti-cracking concrete comprises Portland cement, limestone powder, steel slag powder, sand, fine stones, modified rubber powder, potassium water glass, expanded perlite, natural zeolite ultrafine powder, polypropylene fibers, glass fibers, water reducing agents and water. The anti-freeze and anti-cracking concretehas the advantages of high workability, frost resistance and crack resistance, and effectively prolonged service life in a harsh environment.

The invention relates to normal temperature curing type ultrahigh-performance concrete and an application thereof. The concrete per cubic meter comprises, by weight, 600-1200kg of cement, 50-200kg of mineral additives, 800-1200kg of fine aggregate, 78-300kg of steel fiber, 3-15kg of a water reducing agent (solid content), 0.6-5kg of a defoaming agent, 60-129kg of an expanding agent and 100-250kg of water. Compared with the prior art, the normal temperature curing type ultrahigh-performance concrete has the advantages of good ductility, less proneness to cracking, coordination deformation with construction panels and improvement of structural tension performance; the normal temperature curing type ultrahigh-performance concrete is short in curing time, 3 hours is enough for completion of curing, construction time can be effectively reduced, compressive strength is not less than 120Mpa, and service life of the ultrasonic-performance concrete is prolonged.

The invention relates to a reinforced concrete structure containing early-strength ultra-high-performance concrete, which includes a construction panel and a reinforced concrete structure body. The reinforced concrete structure body includes a steel skeleton and early-strength ultra-high-performance concrete poured into the steel skeleton , the upper part of the reinforced concrete structure body is provided with a wear layer, and the early-strength ultra-high performance concrete is composed of cement, fine admixtures, aggregates, admixtures, fibers and water, and has the following properties: 3h compressive strength is less than Less than 30MPa, 28d ultimate tensile strain not less than 3000με. Compared with the prior art, the early-strength ultra-high-performance concrete of the present invention has good ductility and is not easy to crack. It can coordinate deformation with the construction panel and improve the mechanical performance of the structure; the steel skeleton is a steel mesh shear structure, reducing The stress range in the construction panel under the action of the vehicle is reduced, and its durability is improved; the reinforced concrete structure is suitable for rapid maintenance of the bridge deck structure, and the impact of construction on traffic is minimized.

The invention provides a solid spray containing a nano inclusion as well as a preparation method and application thereof. The solid spray containing the nano inclusion comprises solid water and the nano inclusion dispersed in the solid water; and the solid water comprises a thixotropic agent, a thickening agent and a humectant. The preparation method of the solid spray containing the nano inclusion comprises the step of mixing the thixotropic agent, the thickening agent, the humectant, the nano inclusion, an optional type of preservative and the water. According to the solid spray containing the nano inclusion, the nano inclusion wrapped with active ingredients is combined with the solid water, so that the stability of the active ingredients in a system and the infiltration capacity of the active ingredients to skin are improved, the residence time of the active ingredients in the skin is prolonged, the skin care effect is better, the bioavailability is better, a product does not irritate the skin, and the texture is fresh and cool; and the preparation method is scientific, efficient, simple to operate and extremely high in application value.

The invention provides a concrete curing compound. The concrete curing compound is prepared from the following raw materials in parts by weight: 8-12 parts of paraffin, 5-20 parts of nano-sized calcium carbonate, 1-7 parts of a coalescing agent, 1-3 parts of sorbitan fatty acid ester, 1-3 parts of triethanolamine, 0.2-1 part of a dispersing agent and 85-100 parts of water. The concrete curing compound has the beneficial effects that the concrete curing compound provided by the invention is high in film-forming speed, high in water-retention rate, long in curing time and convenient to construct, can be normally used under the condition of relatively low external environment temperature; the water-retention rate can reach over 90%; and the concrete curing compound can be directly used without dilution, can be sprayed, brushed and rolled, and is high in compressive strength rate, non-toxic, tasteless, non-inflammable, and free of corrosivity on concrete.

The invention discloses a novel assembly type water plank road structure. The water plank road structure comprises a plurality of prefabricated plank road units arranged side by side in the plank roadextending direction, each prefabricated plank road unit comprises a plurality of prefabricated pile foundations and a prefabricated beamless plate, and the prefabricated pile foundations are arrangedon a river bank at intervals in a driving mode. A circle of lower steel plate is embedded in the position, except the pile top face, of the outer circumferential face of the pile top of each prefabricated pile foundation, the prefabricated beamless plate is arranged on the pile tops of the multiple prefabricated pile foundations, and an upper steel plate is embedded in the position, making contact with the pile top of each prefabricated pile foundation, of the lower plate face of the prefabricated beamless plate. During assembly, the lower steel plate on each prefabricated pile foundation iswelded and fixed with the upper steel plate corresponding to the precast beamless plate. The invention further discloses a construction method of the novel assembly type water plank road structure. The water plank road structure and the method have the advantages of short construction period, simple installation, good landscape effect, low temporary cost, reliable construction quality, small environmental pollution and the like.

The invention relates to an automatic monitoring method and system for concrete temperature and humidity curing, and relates to the technical field of intelligent monitoring. The method comprises the steps that: an actual concrete type is obtained; a preset concrete type corresponding to the actual concrete type is queried from a preset database; according to the preset concrete type, preset curing information corresponding to the preset concrete type is called, wherein the preset curing information comprises preset curing duration, preset curing temperature and preset curing humidity; and according to the preset curing information, a temperature and humidity maintenance instruction is generated and executed, wherein the temperature and humidity curing instruction is used for controlling a curing device to cure the concrete according to the preset curing information. With the automatic monitoring method and system adopted, the concrete curing mode of the curing device can be automatically adjusted according to the current curing concrete type.

The invention relates to a movable arm type tower crane underframe ballasting foundation and a construction method. The foundation is arranged at the upper portion of a basement and comprises a cross-shaped steel beam used for installing a tower crane underframe, and a tower crane support cushioned at the lower portion of the cross-shaped steel beam, the tower crane support comprises a reinforcedconcrete beam used for placing the cross-shaped steel beam and supporting columns used for supporting the reinforced concrete beam, the supporting columns are frame columns arranged at the crossed positions of transverse frame beams and longitudinal frame beams of the basement in a supported mode, the frame columns extend out of the ground elevation and then are fixed to the bottom of the reinforced concrete beam, and a plurality of concrete column piers used for fixing the reinforced concrete beam to a basement roof are fixed to the bottom of the reinforced concrete beam at intervals. According to the foundation and the method, a basement structure is used for fixing and supporting the tower crane support, meanwhile, a traditional concrete bearing platform is replaced with the reinforcedconcrete beam, on the premise that the bearing capacity of the tower crane foundation is not reduced, raw materials are saved, construction waste is reduced, and the cross-shaped steel beam is placedon the tower crane support, so that a tower crane is more convenient and quicker to disassemble and assemble, and the foundation is suitable for the installation of tower cranes of various models.

The invention discloses low-viscosity high-durability rapid curing duct piece concrete suitable for machine plastering. Each square of concrete comprises the following components by mass: 250-350kg ofcement, 40-120kg of mineral powder, 60-120kg of fly ash, 670-700kg of fine aggregate, 1050-1150kg of coarse aggregate, and a water reducing agent accounting for 0.5%-1% of the mass of a cementing material; the water-binder ratio is 0.31-0.36; the concrete is subjected to early steam curing at the temperature of 35 DEG C or above; the 12-hour steam curing strength is larger than 50% of the 28-daystandard curing strength; the 3-day steam curing strength is larger than 80% of the 28-day strength; the inverted cone time of the prepared slump cone is shorter than 10 s, the impermeability grade islarger than or equal to P12, freeze-thaw cycles are 500 times, the electric flux is lower than 1200c, and flexural strength is larger than 9MPa. The concrete prepared by the invention can effectivelyimprove the segment production efficiency. After the working performance of the concrete is improved, a trowelling robot is introduced for trowelling work, and therefore, the mechanization degree isgreatly improved, and the concrete plays a very important role in promoting building industrialization.