31results about How to "Long construction time" patented technology

The invention discloses calcination-free functional desulphurization gypsum putty powder for interior and exterior walls, which comprises the following components in percentage by weight: 65 to 80 percent of desulphurization gypsum, 5 percent of other aggregate, 10 to 25 percent of excitation material, 4 to 7 percent of functional material and 2.8 to 3.3 percent of admixture, wherein the functional material may be one or the mixture of two of SI90-0 type mineral powder releasing elements which a human body needs, far-infrared ray releasing fibrous rock flour and crystal-equivalent rock flour with the fineness of 2,000 meshes; the excitation material comprises steel slag, calcination alums and sodium silicates; and the admixture comprises dispersible polymer powder, methyl hydroxyethyl cellulose and a 3060 type seaweed additive. The invention also discloses a preparation method for the calcination-free functional desulphurization gypsum putty powder for the interior and exterior walls. The calcination-free functional desulphurization gypsum putty powder for the interior and exterior walls has the advantages of releasing far-infrared rays, keeping healthy the human body, invigorating the health of the human body, decomposing a plurality of toxic gases and eliminating unusual smell, along with a good waterproof effect, the effect of adjusting the ionic equilibrium of the human body, a plurality of trace elements beneficial to the human body, and the like.

The invention belongs to the technical field of ultra-high-performance concrete, and particularly relates to a low-temperature ultra-high-performance concrete and a preparation method and application thereof. The low-temperature ultra-high performance concrete provided by the present invention includes concrete matrix raw materials and water; in parts by mass, the concrete matrix raw materials include 100 parts of cementitious materials, 100-120 parts of aggregates, 20-30 parts of mineral admixtures, 0.4-0.6 part of water reducing agent, 0.08-0.12 part of defoamer, 0.1-0.3 part of early strength agent, 0.15-0.25 part of retarder, 0.1-0.5 part of antifreeze and 13-20 part of steel fiber; the water and The mass ratio of concrete matrix raw materials is (0.08-0.115):1. The invention adopts a variety of preparation raw materials to composite, and synergistically improves the low-temperature performance of the low-temperature ultra-high-performance concrete, so that it has good fluidity, compressive strength, durability and construction quality.

The invention relates to an intercity light rail fly train which is characterized by being formed by the end-to-end connection of three airplane-shaped streamlined fuselages, the two sides of the first fuselage (1) are respectively provided with a canard (2), the two sides of the middle fuselage (3) are respectively provided with a large sweepback wing (7) and a slant wing (8) being pendent downward obliquely, the position on the slant wing positioned at the lower surface of the large sweepback wing is respectively provided with two turbofan engines (9), the upper part of the tail end of the last fuselage (4) is provided with an empennage (5), and the lower part of the empennage is provided with a turbofan engine (6). The invention has the advantages that: the fuselages and an elevated railway (10) are combined by monorails to implement intercity extremely low-altitude high-speed flying (with the speed per hour being 800 kilometers), the passenger capacity is much larger than that of the airplane, and short-haul stopping sites can be conveniently arranged along the way. The production of the body of the light rail fly train is not as strict as that of the airplane, and the cost isestimated to be less than a half of that of the airplane; and as the extremely low-altitude rail fly is adopted, the train can stop at any time for handling, and the safety is much higher than that in the upper air.

The invention discloses a mineral-powder-based admixture for dry-mixed plaster mortar, which comprises the following components in percentage by weight: 60 to 70 percent of mineral slag micro powder, 3 to 6 percent of desulfurized gypsum, 5 to 10 percent of heavy calcium carbonate powder, 1.5 to 2.5 percent of cellulose ether, 5 to 10 percent of redispersible polymer powder (ethylene-vinyl acetate EVA) and the balance of fly ash. The mineral-powder-based admixture for the dry-mixed plaster mortar has the density of more than or equal to 2.5kg / m<3>, the specific surface area of more than or equal to 350m<2> / kg, and the water content of less than or equal to 1.0 percent. The dry-mixed plaster mortar can be prepared by mixing the mineral-powder-based admixture, cement and medium sand in a certain ratio uniformly. The mineral-powder-based admixture has high construction property, high physical and mechanical properties, long construction operable time, a good construction effect and high construction efficiency, and can be used for preparing the plaster mortar of a building wall external thermal insulation system and a building wall internal thermal insulation system.

The invention discloses a thin coating type impregnating paint with high corrosion resistance, which comprises components A and B, and component A comprises the following components in weight percentage: 15-25% of modified epoxy resin solution; 2-22% of phenolic resin %; Pigment and filler 25-35%; Auxiliary I 2-10%; Solvent I 28-38%; B component contains the following components in weight percentage: Auxiliary II 1-8%; Solvent II 92-99%; The component and the component B are mixed according to the weight ratio of 1:1 to 12:1 and stirred evenly. The preparation method, construction method and application of the above coating are also disclosed. After the coating of the present invention is coated on the surface of metal components, the thickness of the paint film is small, and it has excellent processability, adhesion, mechanical properties, acid resistance and alkali resistance; it also has excellent neutral salt spray resistance and copper resistance. Ion-accelerated salt spray performance; also has a long construction time limit, simple and convenient construction process, energy saving, and low cost.

The invention discloses a tailing powder wet-mixed plastering mortar which is prepared from the following raw materials in mass percent via wet mixing: 5-10% of tailing powder, 60-75% of tailing manufactured sand,10-15% of cement, 0.5-1.5% of a plastic stabilizer, 0.1-0.5% of a retarder and the balance of water. The tailing powder wet-mixed plastering mortar can be used for effectively improving the resource recycling rate of the tailings so as to turn the tailings into wealth; tests show that the tailing powder can be used for improving the peaceability of mortar, improving the bonding strength of the mortar, reducing the shrinking percentage of the mortar, effectively preventing the mortar from cracking and hollowing, effectively reducing the consistency loss of the mortar and prolonging the construction operation time of the mortar. The mortar is low in production cost, stable in quality and long in construction operation time; by adopting a wet mixing technology, the fine aggregates such as the tailing manufactured sand and the like do not need to be dried, so that the energy-saving and environment-friendly green concept is met.