121 results about "Mix design" patented technology

Electrically powered Vertical Takeoff and Landing (VTOL) aircraft are presented. Contemplated VTOL aircraft can include one or more electrical energy stores capable of delivering electrical power to one or more electric motors disposed within one or more rotor housings, where the motors can drive the rotors. The VTOL aircraft can also include one or more sustainer energy/power sources (e.g., batteries, engines, generators, fuel-cells, semi-cells, etc.) capable of driving the motors should the energy stores fail or deplete. Various VTOL configurations are presented including an all-battery purebred design, a light hybrid design, and a heavy hybrid design. The contemplated configurations address safety, noise, and outwash concerns to allow such designs to operate in built-up areas while retaining competitive performance relative to existing aircraft.

Design optimization methods can be used to design concrete mixtures having optimized properties, including desired strength and slump at minimal cost. The design optimization methods use a computer-implemented process that is able to design and virtually “test” millions of hypothetical concrete compositions using mathematical algorithms that interrelate a number of variables that affect strength, slump, cost and other desired features. The design optimization procedure utilizes a constant K (or K factor) within Feret's strength equation that varies (e.g., logarithmically) with concrete strength for any given set of raw material inputs and processing equipment. That means that the binding efficiency or effectiveness of hydraulic cement increases with increasing concentration so long as the concrete remains optimized. The knowledge of how the K factor varies with binding efficiency and strength is a powerful tool that can be applied in multiple circumstances. A concrete manufacturing process may include accurately measuring the raw materials to minimize variation between predicted and actual strength, as well as carefully controlling water content throughout the manufacturing and delivery process.

The present invention relates to structural organosheet-components of hybrid design composed of an organosheet which is reinforced by means of thermoplastics and which is suitable for the transmission of high mechanical loads, where particular flow aids are added to the thermoplastic in order to improve its physical properties.

Methods of preparing design-optimized concrete compositions having target compressive strengths and slumps with a minimal amount of water are disclosed. In particular, the optimized concrete compositions are produced by analyzing pre-existing mix designs from a manufacture and determining the optimum amount of water required in the mix (i.e., optimized water to cement ratio) to obtain a target slump, yet allowing for the end-produced concrete composition to have a target compressive strength.

The present invention is related to high power X-ray sources, in particular to those ones that are equipped with rotating X-ray anodes capable of delivering a much higher short time peak power than conventional rotating X-ray anodes according to the prior art. The herewith proposed design principle thereby aims at overcoming thermal limitation of peak power by allowing extremely fast rotation of the anode and by introducing a lightweight material with high thermal conductivity (2) in the region adjacent to the focal track material (4). The extremely fast rotation is enabled by providing sections of the rotary anode disk made of anisotropic high specific strength materials with high thermal stability (1, 3, 6) which will be specifically adapted to the high stresses building up when the anode is operated, as for example fiber-reinforced ceramic materials. An X-ray system equipped with a high peak power anode according to the present invention will be capable of high speed image acquisition with high resolution and high coverage. Such a high-speed rotary anode disk can advantageously be applied in X-ray tubes for material inspection or medical radiography, for X-ray imaging applications which are needed for acquiring image data of moving objects in real-time, such as e.g. in the scope of cardiac CT, or for any other X-ray imaging application that requires high-speed image data acquisition. According to a further exemplary embodiment, the invention is directed to a rotary anode disk divided into distinct anode segments (10a, 10b) with adjacent anode segments which may e.g. be limited to each other by straight radial (14a) or S-shaped slits (14b) ranging from the inner anode bulk (1) to the inner radial edge of the anode disk's outer frame section (3). Other exemplary embodiments of the present invention relate to a rotary anode disk structure design which comprises liquid metal conductors (16a) between the inner anode bulk (1) and a rotary shaft (12) needed for rotating the rotary anode disk about its rotational axis (5), said liquid metal conductors (16a) providing a liquid metal connection between the rotary anode and its rotary shaft (12), or to a rotary anode disk structure which comprises a sliding radial connection (17) and a flexible heat conductor (18) between the inner anode bulk (1) and the rotary shaft (12).

The invention relates to a road asphalt prepared by adding plant asphalt to petroleum asphalt and a production method thereof, belonging to the field of communications and transportation. The road asphalt is prepared from the following raw materials in parts by weight: 100 parts of petroleum asphalt, 20-100 parts of plant asphalt, cellulose or starch, and rosin, wherein the ratio of cellulose or starch to plant asphalt is 0.01-0.1, and the ratio of rosin to plant asphalt is 0.01-0.03. The plant asphalt and petroleum asphalt (or rubber asphalt, rubber modified asphalt) have favorable compatibility under the actions of the stabilizer and tackifier, thereby improving the service performance of the asphalt and asphalt mixture; and thus, the invention provides a new way and new method for substituting for part of petroleum asphalt. The road asphalt provided by the invention has high viscosity and high softening point; and the on the premise of good mix design, the asphalt mixture has certain high-temperature stability, and can enhance the rutting deformation resistance of an asphalt concrete pavement with high temperature and heavy-load traffic.

Disclosed are wax emulsion compositions for curing or sealing concrete and cement formulations, methods for preparing and processes for using the same. The modifiers are applicable to curing or sealing membranes, used in roadways, highways, parking lots and other freshly placed or poured concrete surfaces to retain moisture and achieve high compressive strengths. This invention also relates to materials used to coat, spray, brush, roll etc. on conventional Portland cement concrete mix designs or other applied concrete mixes in formed structural shapes and transport road mix designs, providing an effective layer that controls and minimizes moisture loss from the mix to enable proper curing and achievement of desired compressive strengths. The compositions of the invention further provide for concrete and cement formulations having lower water soluble chloride content.

The invention relates to a novel method for measuring wax-sealed bulk volume density of a wax seal measuring asphalt mixture, and belongs to the technical field of road asphalt mixture design. Through forming a wax film with definite thickness on the surface of an asphalt mixture test piece to wrap all opening apertures on the surface inside the wax film, a test piece volume comprising stone, asphalt, closed aperture and open aperture is formed, namely, a needed real volume, so that the test result is more real and reliable, and accuracy of mix design of the asphalt mixture is effectively ensured. The method can effectively unify the densities of the asphalt mixtures in different aperture ranges, and avoid inconvenience that the prior asphalt mixtures in the different aperture ranges need to adopt different density measuring methods.

The invention discloses an automatic production device of an environmental protection antibiotic-free fermented?feed. The automatic production device comprises a cleaning system, a crushing system, a feed proportioning system, a microbe?solution injection system, a mixing system and a packaging system, wherein the discharge port of the cleaning system is connected with the feed port of the crushing system, the discharge port of the crushing system is connected with the feed port of the feed proportioning system, the discharge port of the feed proportioning system is connected with the solid-material feed port of the mixing system, the discharge port of the microbe solution injection system, the discharge port of the microbe solution injection system is connected with the microbe solution feed port f the mixing system, and the discharge port of the mixing system is connected with the packaging system. The automatic production device has advantages of convenient operation, safe and reliable use, environmental protection, and no pollution. The special process design concept?is adopted, the solid and solution mixture design is utilized, the feed is packaged and then fermented, the production package mode, artificial stacking?fermentation, of the traditional production is changed, and the computer automatic control way is adopted, so as to achieve perfect automatic production of the antibiotic-free fermented?feed.

The invention relates to a method for establishing a complex product optimization design agent model based on a small sample, belonging to the technical field of complex product optimization design. The method comprises the following steps: setting a goal of the complex product optimization design; generating an original design scheme sample set, the sample capacity of which is S, for the complex product optimization design; generating a virtual design scheme sample set for the complex product optimization design; combining the original design scheme sample set with the virtual design scheme sample set so as to form a mixed design scheme sample set; determining the sensitivities of the target of the complex product optimization design corresponding to various decision variables, and sorting the sensitivities; establishing a three-layer BP neural network model having different input variables by taking the target variable as the output variable; and training various neural network models by taking the mixed sample set as the training sample set; and selecting the neural network model having the optimal performance as the final complex product optimization design agent model. By means of the method, the sample generation workload is reduced; and the precision of the complex product optimization design agent model is ensured.

A retarder used in the preparation of sulphoaluminate cement rapid hardening concrete. The preparation includes: selecting ultra-high-strength sulfoaluminate cement; designing the mix ratio and trial mixing concrete; at the mixing station, adding water reducer and retarder to the concrete according to the mass ratio of cement; when the concrete is transported to the construction site Finally, add early strength agent to concrete according to a certain mass ratio with cement. The retarder is used to manually add to the concrete in the mixing station, and its component is boric acid, and the dosage of the boric acid matched with the ambient temperature is 0.3-0.6% of the cement mass. In the preparation process of sulphoaluminate cement rapid hardening concrete, the fine control technology of adding retarder and early strength agent in stages is adopted to precisely control the setting time of concrete, which can not only meet the needs of commercial concrete production and transportation, but also Guarantee the construction operation time of the construction site and the need for the final rapid opening to traffic.

The invention discloses an air-entraining agent microcapsule. Ethyl cellulose is used as an oily microcapsule wall for wrapping sodium dodecyl benzene sulfonate so as to form the air-entraining agentmicrocapsule, wherein a mass ratio of sodium dodecyl benzene sulfonate to ethyl cellulose is 3: 1. The invention also discloses a preparation method of the air-entraining agent microcapsule. The air-entraining agent microcapsule of the invention is an air-entraining agent used for concrete; and the sustained release effect of the air-entraining agent is controlled by controlling the breaking timeof the wall of the microcapsule, so the performance indexes of anti-freezing and anti-thawing concrete can be reached. The air-entraining agent microcapsule improves the problem of loss of effective bubbles during conveying and pouring of the anti-freezing and anti-thawing concrete, enhances the working performance of the anti-freezing and anti-thawing concrete, provides a novel concept for the mix design of the anti-freezing and anti-thawing concrete, increases the core competitiveness of enterprises, and fills a blank in domestic improvement of concrete performance via microcapsule technology.

The invention discloses a composite light-weight high-strength flame-retardant weather-resistant foam heat preservation material comprising the following components: ceramsite, vermiculite, polyurethane, a flame retardant, a foaming agent, alumina silicate fibers, an anti-aging agent and an ultraviolet absorbent, wherein polyurethane is prepared from polyisocyanates, polyether polyol, a catalyst and a crosslinking agent. The composite light-weight high-strength flame-retardant weather-resistant foam heat preservation material disclosed by the invention is reasonable in raw material selection and mixing design, is used for forming a heat preservation main body material by using the ceramsite, vermiculite and polyurethane together, and integrates the excellent properties such as light weight, high strength, flame retardant property, weather resistance and the like under the combined actions of the flame retardant, the foaming agent, the alumina silicate fibers, the anti-aging agent and the ultraviolet absorbent; compared with the prior art, the foam heat preservation material disclosed by the invention is a building heat preservation material with excellent comprehensive performances, can be used for effectively reducing the energy dissipation in buildings, and is low in cost, good in durability and wide in market prospects.

The invention relates to a high-frost-resistant hydraulic concrete for high elevation regions. The concrete is characterized in that a single formula of the concrete comprises the components in percentage by weight: a gel material, which is 230-420 kg/m3, wherein the gel material comprises 80-100% of cement and 0-20% of limestone powder, or 60-100% of cement and 0-40% of coal ash, or 60-100% of cement, 0-20% of limestone powder and 0-20% of coal ash; a gravel aggregate, which is an artificial or natural gravel material, wherein the total amount of the gravels is 1800-2100 kg/m3, and the ratio of medium gravels to small gravels is 60: 40, 50: 50 or 45: 55, and the sand ratio is 30-34%; water, which is 110-125 kg/m3, wherein the water-binder ratio is not greater than 0.48; and an additive, which comprises a high-performance water reducer and an air entraining agent, wherein the doping amount of the water reducers accounts for 0.6-1.2% of the total mass of the gel material and the air entraining agent accounts for 0.005-0.02% of the total mass of the gel material. By virtue of steps of optimization of local raw materials, mix design, site operation, early maintenance and the like, the high-frost-resistant hydraulic concrete for high elevation regions is prepared. The 28-day frost resistant grade reaches over F200, so that the frost resistant durability of a concrete structure in the high elevation regions can be ensured, the project quality and safety are guaranteed, and the concrete has an important project application prospect.

Disclosed are wax emulsion modifiers for concrete and cement formulations and methods for preparing the same. The modifiers are applicable to roller compacted concrete (RCC), used for manufacturing of industrial floor slabs, dams and roads. This invention also relates to conventional Portland cement concrete mix designs or other applied concrete mixes for formed structural shapes and transport road mix designs, providing a more rapid dehydration of the aqueous phase, without sacrificing strength, yet providing a higher density that remains workable at the point of application. The modifier of the invention may be utilized for either the initial soil/cement base or for the final/finished placement.

The invention provides a method for testing the particle packing density of concrete used powder, and the tight particle packing density degree of the concrete used powder can be tested through the ratio of the absolute volume of the mixing powder and the packing volume of powder in slurry. The method provided by the invention is simple to operate, scientific, and closer to the practical application condition, and can provide better guidance for the mix design of concrete.

The invention relates to a brand-new wide-color-gamut dimming and light mixing method and an atmosphere lamp. The method comprises the steps that a user provides target brightness and chromaticity (color or color temperature) parameters, a color gamut is divided by five kinds of light of red, green, blue, cold white and warm white (RGBCW) in the light mixing design, corresponding light mixing light sources are determined according to the color separation gamut where target light color coordinates are located, and the light mixing design is finally completed according to the Grassmann color mixing law. The method has the advantages that cold white light and warm white light are added on the basis of RGB light mixing, spectrum is continuous, gaps among color bands are reduced, color mixing uniformity and color rendering are improved, and the method is closer to natural light. Based on the established dimming and light mixing model, it can be achieved that the light intensity parameter value is not changed basically when the color temperature is adjusted, the color coordinate is not changed when the light intensity is adjusted, and color distortion is not caused when the color is adjusted.