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43 results about "Mixture designs" patented technology

Mixture designs are a special case of response surface designs. Under the stat menu in many tab, select design of experiments, then mixture, create mixture design. Minitab then presents you with the following dialog box: Simplex lattice option will look at the points that are extremes.

Automatic production device of environmental protection antibiotic-free fermented?feed

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.
Owner:福建龙岩金和动物饲料有限公司

Asphalt mixture mixed ratio design method based on shearing resistance performance

The invention relates to an asphalt mixture mixed ratio design method based on the shearing resistance performance, which is characterized by comprising the following steps of: (1) determining the maximum shearing stress of a structure layer of the designed asphalt mixture; (2) entering a conventional target mixed ratio design stage; (3) determining the shearing resistance intensity of the asphalt mixture designed in the second step; (4) determining the allowable shearing stress of the asphalt mixture; and (5) verifying the shearing resistance performance. The method has the advantages that in the asphalt mixture mixed ratio design, the asphalt mixture shearing resistance design index is provided, the materials and the structure adopt the integral design, and the pertinence is strong. Under the condition of the heavy load traffic, the design load of the heavy load traffic can be determined, the standard load limitation can be broken through, the structural calculation is carried out, the maximum shearing stress of the pavement structure is determined, and the allowable shearing stress of the asphalt mixture is determined through the three-axis shearing tests and the structural analysis, so the designed asphalt mixture meets the requirements of the heavy load traffic and has good shearing resistance performance.
Owner:天津市国腾公路咨询监理有限公司 +2

Method for designing mixing ratio of construction waste for asphalt mixture

InactiveCN108536956AEnsure possibilityEnsure feasibilityGeometric CADDesign optimisation/simulationRoad surfaceEngineering
The invention relates to a method for designing mixing ratio of construction waste for asphalt mixture, which comprises the following steps of: utilizing suitable waste source, establishing a buildinggarbage crushing model and a crushing process, and proposing a new crushing process; a recycled aggregate is obtained through the new crushing process, the corresponding matching ratio design is carried out, the design of the index data is detected to meet the latest specification requirement, then, the test data is used to optimize the gradation design, and RCA with different dosage is used to replace part of raw materials in road construction, and the possibility and feasibility of the construction waste for the asphalt mixture design are ensured; in this way, replacing the natural crushedstone with the construction waste generated by the waste building, which is used as the main raw material of the road construction; not only can the resources be saved, but also the influence of the construction waste on the environment can be relieved, the problem of insufficient supply of the natural aggregate in the construction process can be relieved to a certain extent, and the supply of high-quality aggregate is provided; the method has a remarkable environmental protection meaning, economic significance and social benefit.
Owner:CHANGAN UNIV

Method for determining mineral aggregate gradation by using three control points hyperbolic structure

The invention relates to a method for determining mineral aggregate gradation by using three control points hyperbolic structure. The method comprises the following steps of: (1) determining the following three control points according to the properties of a mixture: nominal maximum particle size of the mixture and pass rate thereof, nominal minimum particle size of the mixture and pass rate thereof, and coarse / fine aggregate discontinuous point nominal particle size and pass rate thereof; (2) making a coarse aggregate gradation curve and a fine aggregate gradation curve by selecting power function models, exponential function models and logarithmic function models respectively; and (3) measuring tamping density and tamped mineral aggregate clearance rate of the mixture, and adopting coarse aggregate gradation and fine aggregate gradation respectively according to construction needs. The method can select reasonable gradation forms according to the requirements for asphalt mixture design, can also selectively construct different gradation curve forms according to the characteristics of mixtures from different material sources in different areas, gives full play to performances and characteristics of mineral aggregates in the mixture, and is significant in guiding mixture design.
Owner:RES INST OF HIGHWAY MINIST OF TRANSPORT +1

Proportioning design method of asphalt mixture through construction waste

ActiveCN105421182AEnsure possibilityEnsure feasibilityIn situ pavingsBoundary valuesThree stage
The invention provides a proportioning design method of an asphalt mixture through construction waste. The construction waste asphalt mixture designed through the method is applicable to asphalt surfaces of highways and urban roads. Recycling of the construction waste is achieved, and pollution caused by urban and rural solid waste is reduced. The proportioning design of the construction waste asphalt mixture is conducted through a three-stage design method. Firstly, the mixture gradation design is conducted through a substitution method; and secondly, the best asphalt use amount of the asphalt mixture is determined through a new design method. The second step is divided into three steps that (1) feasible regions of the best asphalt use amount in different gradation schemes are determined through a Fort shellen leakage analysis test and a Cantabro raveling test; (2) according to the two end boundary values and the intermediate value of the feasible regions of the asphalt use amount, the asphalt mixture is formed through three asphalt use amounts; and (3) whether the asphalt mixture meets the basic performance requirements or not is judged. Finally, the asphalt mixture is formed under the condition of the best asphalt use amount, and pavement performance detection is conducted.
Owner:湖州南浔交通水利投资建设集团有限公司 +2

Mixture proportion design method for cold regeneration of foamed asphalt with internal friction angle and cohesive force

ActiveCN107540274ATaking into account the bending and tensile performanceEasy to useUsing mechanical meansMaterial analysisEngineeringUltimate tensile strength
The invention discloses a mixture proportion design method for the cold regeneration of foamed asphalt with an internal friction angle and cohesive force. The method includes the steps of according tothe internal friction angle measured by a direct shear test or a triaxial compression test, determining the optimum gradation of a recycled material; after determining the optimum foaming condition of asphalt, selecting 3-4 different kinds of foamed asphalt dosages, using a compaction test to determine the optimum water content; molding under the optimum water content, soaking in water to keep araw test-piece, and determining the optimum foamed asphalt dosage by using the cohesive force obtained by the triaxial compression test; according to the optimum foamed asphalt dosage and the optimumgradation of the recycled material, determining the mixture proportion design of the cold regeneration of the foamed asphalt. The method has the advantages that compared with the existing foamed asphalt mixture design method based on dry-wet splitting strength, material tensile strength is considered, and meanwhile two uppermost destructional modes in the use process of the foamed asphalt mixtureare considered more contrapuntally, wherein the modes includes water damage and permanent deformation caused by continuous accumulation of shear strain.
Owner:SOUTHEAST UNIV

Design optimization method for porous elastic pavement mixture

ActiveCN110261248ASolve the problem that there are no rules to follow in the optimization of mix ratio designEasy to useMaterial strength using repeated/pulsating forcesVolume replacementPrill
The invention discloses a design optimization method for a porous elastic pavement mixture. The design optimization method belongs to the technical field of road engineering, and comprises the steps of: selecting a plurality of groups of design gradations according to an open gradation recommendation range, replacing fine aggregate in the gradations with rubber particles of equal volume and the same particle size according to a principle of equal volume replacement, adding a certain mass fraction of polyurethane, and determining the optimal gradation of materials according to an internal friction angle measured in a shear test; selecting a plurality of groups of polyurethane dosages, forming a test piece with a desired void ratio and soaking the test piece in water for maintenance, and determining the optimal polyurethane dosage by utilizing bending stress obtained in a bending test; and determining a porous elastic mixture mixing proportion according to the optimal polyurethane dosage and the optimal aggregate gradation, and conducting a water stability detection. The design optimization method is based on the shear resistance and bending resistance of the mixture, mainly considers the water damage of the porous elastic pavement mixture so as to solve the problem that the porous elastic pavement mixture design optimization has no rules to follow, and improves the use performance of the mixture.
Owner:SOUTHEAST UNIV

Asphalt mixture grading design method based on grading interlocking and voids in mineral aggregate

The invention discloses an asphalt mixture grading design method based on grading interlocking and voids in mineral aggregate. The method comprises the steps of 1, collecting local existing mixture design grading data, and solving parameters in a prediction model for voids in mineral aggregate according to interlocking theoretical planning; 2, detecting aggregate physics of each level, wherein bulk density, dry density and grading are included; 3, according to the standard requirement, performing primary grading, or performing selection by referring to past experience; 4, according to the prediction model for voids in mineral aggregate, working out the voids in mineral aggregate of primary grading; 5, comparing whether the voids in mineral aggregate meet the standard requirement or not; 6,according to the water absorption rate and the oil absorption rate of the aggregate, calculating the asphalt amount. By considering filling and interlocking characteristics of the aggregate as a starting point, the theoretical basis is built through discrete element numerical simulation, the specific engineering project is optimized by applying a big data numerical analysis method, and the reasonable grading with the structural strength and stability is obtained.
Owner:嘉兴市嘉海建设有限公司 +1

Method for predicting pyrolysis kinetic parameters of biomass

The invention proposes a method for predicting pyrolysis kinetic parameters of biomass. The method comprises the following steps of 1) performing optimization design on a proportion of three main components of the biomass by adopting an optimal mixture design method in a Design-Expert mixture experiment method; 2) performing a thermogravimetric experiment on each mixing sample, performing reactive kinetic parameter calculation on thermogravimetric experiment data of the three components in combination with a Coats-Redfern integral method, and establishing a mathematic model used for calculating the pyrolysis kinetic parameters of the biomass by adopting a Special Cubic regression model; and 3) substituting the proportion of main components in a to-be-tested substance into the established mathematic model, and predicting the pyrolysis kinetic parameters of the biomass of the to-be-tested substance. According to the method, a large amount of thermogravimetric experiments and complicated calculation processes required to be performed for calculating the kinetic parameters in a biomass pyrolysis research process are effectively avoided and reliable experimental and theoretical bases are provided for energy utilization of the biomass, control of a biomass thermochemical conversion and utilization process and optimization of a technological process.
Owner:SOUTHEAST UNIV

Toilet flushing system based on negative pressure drainage

ActiveCN107237378AUse less flushing waterSave waterUrinalsWater closetsSiphonEngineering
The invention provides a toilet flushing system based on negative pressure drainage, the toilet flushing system includes a mechanical linkage device, a water tank, a wash basin, a wastewater treatment tank, a water inlet pipe of the water tank, a valve, a buoyancy rod, a floater, a plug, a diaphragm, a piston, a gas storage chamber, a contraction section, one one-way valve, a guide pipe, another one-way valve, a throat pipe, a siphon bend, a divergent section, a drainage pipe, and a toilet. The mechanical linkage device is connected with the water tank and a Venturi pipe, the water tank includes a tank body A and a tank body B, and the tank bodies of A and B are equipped with purified recycled water for life and tap water respectively. The throat of the Venturi pipe is connected with the siphon bend of the toilet. When the mechanical linkage device is triggered, the water of the tank body A flushes the toilet, at the same time, a jet flow is formed at the throat, and the momentum of the dirt discharged with the drainage is increased. Through the mixture design of the siphon and the Venturi pipe, the siphonage is formed when the flushing water is not large, the piston is mainly driven by the linkage device to pressurize the gas in the gas storage chamber, and a high velocity flowing fluid is formed in the throat so as to produce the adsorption effect.
Owner:JIANGSU UNIV
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