39results about How to "Durability impact" patented technology

The invention discloses a reactive powder concrete pipe column for ocean engineering. The reactive powder concrete pipe column comprises a reactive powder concrete casing pipe (1), a stirrup (2), a longitudinal bar (3) and a concrete column (4), wherein the stirrup (2) and the longitudinal bar (3) are arranged in the reactive powder concrete casing pipe (1). The reactive powder concrete pipe column is characterized in that the stirrup (2) is a closed fiber-reinforced plastic stirrup (2), the longitudinal bar (3) is a longitudinal fiber-reinforced plastic bar (3), and corrosion-resistant short fibers are mixed into the reactive powder concrete of the casing pipe (1); and the concrete column (4) is cast in the casing pipe (1) in situ and is made of concrete prepared by mixing seawater and sea sand. The reactive powder concrete pipe column has the characteristics of excellent ocean environment corrosion resistance, prefabrication construction, high axial bearing capacity, utilization of on-site materials such as seawater and sea sand, good economical efficiency and the like, is a novel structural column capable of meeting the construction requirements of ocean engineering and particularly ocean island engineering and can also replace a steel pipe pile in ocean engineering.

The invention relates to a concrete curing device and a curing method for winter construction in a cold region. During winter construction in the cold region, a current concrete curing measure is highin energy consumption, has potential safety hazard, and is difficult to fit for concrete curing in winter in the cold region. The curing device is a rectangular frame body sequentially enclosed by four side plates, wherein concrete is filled in the rectangular frame body; a top plate and a bottom plate are horizontally arranged on the top part and the bottom part of the rectangular frame; a phase-change material layer is arranged on the outer wall of a template frame and is an electrified and heat-storage layer body; and a heat insulating layer is arranged on the outer wall of the phase-change material layer. According to the method provided by the invention, the phase-change material layer located between the template frame and the heat-insulating layer transfers heat to the concrete through the template frame, and continuously heats and cures the concrete through a repetitive heating and heat releasing way. The concrete curing device and the curing method for winter construction inthe cold region provided by the invention are used for concrete curing in winter site construction in the cold region.

The invention belongs to the technical field of bridge construction materials and relates to a novel bridge post-tensioned prestressed tunnel grouting material and a preparation method thereof. The novel bridge post-tensioned prestressed tunnel grouting material comprises 55-85% of portland cement clinker, 5-25% of ore powder and 5-25% of a grouting agent. The novel bridge post-tensioned prestressed tunnel grouting material is prepared by simple processes, does not contain gypsum, fly ash, vulcanic ash and light substances of a grouting agent, does not produce laitance at the highest point of a curve pipe under pressure in bridge post-tensioned prestressed tunnel grouting and in a voltage stabilization period and in a hardening period, has high strength, does not cause layering after secondary supplied grouting liquid hardening in grouting liquid supply treatment, effectively prevents prestressed strand corrosion and fracture, produces great influence on bridge structure safety and endurance and has a wide popularization meaning.

The invention relates to a tyre comprising a transponder, said tyre having:-a crown comprising a crown reinforcement having an axial end at each edge, at each axial end thereof, connected by a sidewall to a bead having an inner end; -a carcass reinforcement layer made up of parallel metal reinforcements anchored in each bead around the bead core, thereby forming a main portion and a bead; -said transponder comprising a dipole antenna consisting of a spring defining a pitch P and a diameter D, the length of said spring defining a longitudinal axis, characterized in that the ratio between the pitch (P1) and the diameter (D1) of the annular loop of the first region of the spring is greater than 0.8, and in that the length of the annular loop of the second region of the spring is greater than 0.8. And the transponder is positioned axially outward with respect to the inner end of the bead and radially between the upper end of the bead core and the axial end of the crown reinforcement.

The invention relates to a horizontal embedded anchorage foundation and relates to the technical field of bridge engineering. The horizontal embedded anchorage foundation comprises an anchor body, anembedded wall, a buttress, a cable-stayed beam and an anchor chamber. As the embedded wall is arranged below the bottom surface of the anchor body and is horizontally embedded in bed rock, a larger part of anti-slip bearing capacity can be provided for the anchorage foundation; and compared with a gravity type anchorage foundation, the required anchor body weight is smaller when the same; in addition, a boss is arranged at the bottom of the anchor body to meet the requirement of an anchoring system for an anchoring space, and the situation that the foundation pit excavation amount is increaseddue to overall downward moving of the anchor body base surface can be avoided; and the bottom surface of the boss is arranged on the sea level or above the underground water level line, so that underground water can be prevented from immersing into the anchor body to influence the durability of the main cable anchoring system anchored in the anchor body boss. Therefore, the anchor foundation scale can be reduced, the material consumption can be reduced, the mountain excavation amount can be reduced, and the durability of a main cable anchoring system can be ensured.

The invention belongs to the technical field of building materials and relates to a slag additive and its preparation method and use. The slag additive comprises, by weight, 5-50% of glycol, 5-30% of diglycol, 10-50% of glycerol, 10-50% of lithium sulfate, 0.1-5% of sodium sulfate, 0.1-5% of sodium sulfocyanate, 1-10% of sodium hydroxide and 15-95% of water. A use ratio of the slag additive in slag is in a range of 0.1-0.5%. The slag additive can improve slag seven-day activity by 10-15% and slag 28-day activity by 5-10%.

The invention provides a method for making a Huzhou ink brush for traditional Chinese painting. Horse's mane is treated with all natural plants, fennel decoction and small semen cassiae granules, so that firstly, grease on the horse's mane can be removed better; secondly, insects can be repelled, and insect bites can be prevented; thirdly, the horse's mane can be softened. The horse's mane is ultrasonically treated by the small semen cassiae granules, so that the grease on the horse's mane can be further removed, coloring can be realized, the dyeing effect is good, and a certain antibacterialeffect can be realized. In conclusion, with adoption of the method for making the Huzhou ink brush for traditional Chinese painting, the selected horse's mane is treated with fennel and semen cassiae,no chemical reagent is used in the whole treatment method, and the obtained Huzhou ink brush has the advantages that the defect of insufficient ink absorbing capacity of the ink brush made of the horse's mane is overcome, and the durability of the ink brush cannot be affected.

The invention belongs to the technical field of offshore pile sinking, and discloses a concrete pipe pile offshore pile sinking construction method. The method comprises the steps that firstly, a grouting rotary spraying pipe for high-pressure nozzle operation and a prefabricated concrete pipe pile are vertically placed over a pile sinking position, and the concrete pipe pile is arranged outside the grouting rotary spraying pipe in a sleeving mode and clamped and fixed through a pile holding device; then, drilling and high-pressure rotary spraying operation are carried out, after the groutingrotary spraying pipe descends by a section depth, the concrete pipe pile is downwards conveyed by the same section depth through the pile holding device, and the steps are repeated until the concretepipe pile reaches the designed elevation position; then, the grouting rotary spraying pipe is upwards lifted out of the concrete pipe pile; and finally, standing and curing are carried out until the strength of cement sand meets the requirement. According to the method, the problem that the concrete pipe pile is difficult to sink due to the strong friction resistance of the sand in the high-stressstate to the pile wall can be effectively solved, the connection strength of the sand and the pile interface can be effectively improved, the effective pile diameter of the concrete pipe pile is enlarged, the bearing capacity is improved, one-time construction of offshore pile sinking can be realized, and the construction period is saved.

The invention belongs to the technical field of cultural relic protection. The invention particularly discloses a digital full-color pen connecting method for repairing ancient calligraphy and painting. The method comprises the following steps: firstly, carrying out high-precision scanning on ancient calligraphy and painting before full color, then carrying out full-color pen connection on incomplete parts of the ancient calligraphy and painting in a computer by using digital painting software, then carrying out color correction on the whole process by using a color management system, and finally copying repaired works by using artistic micro-spraying equipment. The problems that original artistic styles of the ancient calligraphy and paintings are damaged due to the fact that no basis isprovided for pen connection during ancient calligraphy and painting restoration, and picture content cannot be comprehensively displayed during ancient calligraphy and painting exhibition due to the fact that pens cannot be connected are solved. The method is quick and safe to operate and high in reversibility, does not influence the strength, color, durability and other properties of the ancientpainting and calligraphy image layer, and conforms to the principle of minimum intervention of cultural relic protection.

A refrigeration cycle device comprises a heat pump cycle (10), a high-temperature-side heat medium circuit (21), and a low-temperature-side heat medium circuit (30). The heat pump cycle has a compressor (11), a high-temperature-side heat medium-refrigerant heat exchanger (12), a heat absorption decompression unit (14b), and a low-temperature-side heat medium-refrigerant heat exchanger (16). The high-temperature-side heat medium circuit has a heat exchanger (23) for heating that exchanges heat between a high-temperature-side heat medium and a fluid of which the temperature is to be adjusted. The low-temperature-side heat medium circuit has a plurality of heat absorption devices (31, 32, 36, 38) that causes heat to be absorbed in a low-temperature-side heat medium flowing out from the low-temperature-side heat medium-refrigerant heat exchanger; and heat absorption amount adjusting parts (33, 33a, 35a, 35b, 37) that change the heat absorption amounts of the low-temperature side heat mediums in the heat absorption devices, respectively. When the heat absorption amount adjusting parts change the heat absorption amounts of the low-temperature side heat mediums in the heat absorption devices, respectively, the refrigeration cycle device reduces the flow rate of a refrigerant flowing into the low-temperature-side heat medium-refrigerant heat exchanger.

The present invention relates to a new application of high-fine recovered dust ash of cement plant. It can be mixed into cement and can be used as cement blending material and cement reinforcing agent. The tests show that it not only can raise strength of cement, but also can raise cement endurance quality, fluidity and workability, and can reduce production cost of cement.

The invention provides a preparation method and application of a fly ash slurry material based on a wet grinding process. The fly ash slurry material is characterized in that the fly ash slurry material is prepared from, by mass, 50-60% of fly ash, 1-3% of a dispersing agent, 0.2-0.4% of a stabilizer, 5-10% of cement, and the balance of water. The fly ash slurry material is prepared through the wet grinding process. The fly ash slurry material provided by the invention can equivalently replace 20-30% of cement in a cement-based material. Compared with the original cement, the fly ash slurry material disclosed by the invention has higher hydration degree and extremely high activity, and when the cement is partially replaced, the early strength can be obviously improved, and the grading can be optimized, so that the later strength is also improved to a certain extent. The preparation process is simple, the preparation process is easy to control, the energy consumption is low, the used raw materials are environment-friendly, harmful substances are not introduced and discharged, and the preparation method is easy to popularize and apply.

The invention provides a device for heating a traction battery and a method for operating a traction battery. The invention relates to a device (5) for heating a traction battery (2) of a vehicle, comprising: at least one rechargeable battery (6); at least one heating unit (7, 8, 9) that can be arranged at a part of the traction battery (2); at least one control unit (10) for controlling electricenergy supply from the rechargeable battery (6) to the heating unit (7, 8, 9); and at least one detection unit (11) connected with the control unit (10) for detecting at least one environmental parameter, at least one parameter of the traction battery (2) and/or at least one parameter of the rechargeable battery (6), wherein the control unit (10) controls the electric energy supply according to the parameters detected by the detection unit (11).

The invention relates to a tyre comprising a transponder, said tyre having:-a crown comprising a crown reinforcement having an axial end at each edge, at each axial end thereof, connected by a sidewall to a bead having an inner end; -a carcass reinforcement consisting of adjacent first wires anchored in each bead around a helix formed by second wires; -said transponder comprising a dipole antenna consisting of a spring defining a pitch P and a diameter D, the length of said spring defining a longitudinal axis, characterized in that the ratio between the pitch (P1) and the diameter (D1) of the annular loop of the first region of the spring is greater than 0.8, and in that the length of the annular loop of the second region of the spring is greater than 0.8. And the transponder is positioned axially outward with respect to the inner end of the bead and radially between the upper end of the helix and the axial end of the crown reinforcement.