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43 results about "Mixture designs" patented technology
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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.
Bituminous mixture proportion design method based on tightest state
The invention proposes a bituminous mixture proportion design method based on tightest state. The method includes that: (1) three parameters for evaluating the tightness of mixture mineral aggregate are determined, including the voidage of mineral aggregate , the voidage of coarse mineral aggregate and the mixture mineral aggregate dry density; (2) the relevance of the three parameters are demonstrated, the secondary curvature model is adopted for analysis to determine the extreme values of the corresponding parameter curvatures as the tightest state of the mixture; (3) the oilstone ratios corresponding to the extreme values of the parameters are selected, namely the oilstone ratios corresponding to the maximums of the voidage of mineral aggregate VMA and the voidage of coarse mineral aggregate VCA, and the oilstone ratio corresponding to the maximum of mineral aggregate dry density, and the oilstone ratios correspond to the tightest state of the mixture; (4) for reducing error, the average value of the three oilstone ratios is used as the design oilstone ratio. The invention is applicable to coarse aggregate gap-graded bituminous mixture and ensures the bituminous mixture designed by the invention to have good road performance.
Owner:交通部公路科学研究院
Vibration-molding-based cement stabilized macadam mixing ratio design method
InactiveCN102019645AImprove compactionImprove road performanceMixing operation control apparatusMaterial DesignCrack resistance
The invention relates to a vibration-molding-based cement stabilized macadam mixing ratio design method, which comprises the following steps: (1) preparing optimized dense skeleton type graded aggregate; (2) adding cement into the graded aggregate to prepare cement stabilized macadam mixture; (3) vibrating and compacting the cement stabilized macadam mixture, and determining the optimal water content and the maximum dry density of the cement stabilized macadam mixture in mode of a vibration and compaction test; (4), preparing cement stabilized macadam cylindrical test pieces by using a vibration molding test process at a compactness of 98 percent under the determined maximum dry density and the optimal water content; and (5) perform an unconfined compression test on the prepared cement stabilized macadam cylindrical test pieces and determining the dose of the cement according to the result of the unconfined compression test. The cement stabilized macadam mixture designed by the invention has the characteristics of high strength, high crack resistance, convenience for construction and low cost, and an innovation is made in semi-rigid material design on the basis of a material design guiding ideology.
Owner:天津市市政工程研究院
Curing or sealing compositions for concrete and cement formulations and processes for using the same
ActiveUS20110005431A1Efficient executionFibreboardAntifouling/underwater paintsMoistureMixture designs
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.
Owner:HEXION INC
Method for wax-sealed measurement of asphalt mixture bulk density
ActiveCN101477012AEasy to controlNot easy to immersePreparing sample for investigationMaterial weighingWaxMixture designs
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.
Owner:RES INST OF HIGHWAY MINIST OF TRANSPORT +1
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
Modifier for concrete and cement formulations and methods of preparing the same
Disclosed are wax emulsion modifiers for concrete and cement formulations and methods for preparing same. The modifiers are applicable to pervious concrete, used in residential areas, parking lots and parks to more effectively manage storm waters and improve environmental practices. This invention also relates to conventional Portland cement concrete mix designs with little to no sand, which provide improved workability, low hydration rates without sacrificing strength while achieving high levels of porosity for water transmission.
Owner:MOMENTIVE SPECIALTY CHEMICALS
Stable type finished warm-mixing rubber modified asphalt and preparation method thereof
ActiveCN103709771AEvenly dispersedImproved high temperature storage stabilityClimate change adaptationBuilding insulationsHigh temperature storageWaste rubber
The invention discloses stable type finished warm-mixing rubber modified asphalt and a preparation method thereof. The modified asphalt comprises the following components in percentage by mass: 76-84% of matrix asphalt, 0.5-5% of modifier, 16-22% of waste rubber powder, 0.5-3% of stabilizer, 1-8% of toughener and 0.1-10% of warm mixing agent. According to the stable type finished warm-mixing rubber modified asphalt, the storage stability (especially high-temperature storage stability) of the modified rubber asphalt is improved through the mixture design, so that the modified asphalt is suitable for construction at a high / low temperature and especially suitable for construction in winter, high-temperature viscosity reduction and low-temperature viscosity increase; and the preparation process of the stable type finished warm-mixing rubber modified asphalt does not need special equipment, and is simple to operate, low in manufacturing cost and suitable for large-scale construction use.
Owner:南京宁通智能交通技术研究院有限公司
Modifier for concrete and cement formulations and methods of preparing the same
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.
Owner:MOMENTIVE SPECIALTY CHEMICALS
Modifier for concrete and cement formulations and methods of preparing the same
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.
Owner:MOMENTIVE SPECIALTY CHEMICALS
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
Design method of ATB-30 asphalt mixture
The invention discloses a design method of an ATB-30 asphalt mixture, which adopts a vertical vibration design method. The method comprises the steps of raw material selection and testing, mineral gradation design, determination of optimal asphalt-aggregate ratio, property inspection and the like. The experimental verification indicates that the asphalt mixture designed by the method has the advantages of favorable road applicability and low asphalt consumption, is simple to operate, and can save the asphalt by 8-10%.
Owner:CHANGAN UNIV
Cement-stabilized-macadam mixture design method
The invention discloses a cement-stabilized-macadam mixture design method, and belongs to the field of road engineering. The cement-stabilized-macadam mixture design method is characterized in that the fractional step mixing method is adopted in the mixture mixing process, the rotating compaction forming method is combined, and a test piece is obtained. Compared with an existing design method, by means of the cement-stabilized-macadam mixture design method, the technical problem that as the actual compaction state of a pavement-base construction site cannot be reflected in the traditional design process, the performance of the mixture is uneven is solved, the using amount of cement and the using amount of water are reduced on the premise that the performance requirements can be met, the aims that the design performance of the mixture is stable, economical and environmentally friendly are achieved, and the cement-stabilized-macadam mixture design method has the quite-good popularization and application value.
Owner:SHANDONG TRANSPORTATION INST
Method for designing AC-20 asphalt mixture
The invention discloses a method for designing an AC-20 asphalt mixture, which adopts a vertical vibrating method to design and comprises the steps of selecting and testing raw materials, designing mineral aggregate gradation, determining the optimal asphalt-aggregate ratio, testing performance and the like. Experimental verification shows that the asphalt mixture designed by the method has good pavement performance and a small use quantity of asphalt and is simple and convenient to operate; and asphalt can be saved by 8 percent to 10 percent.
Owner:CHANGAN UNIV
Method for determining mineral aggregate gradation by using three control points hyperbolic structure
Owner:RES INST OF HIGHWAY MINIST OF TRANSPORT +1
Proportioning design method of asphalt mixture through construction waste
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
Curing or sealing compositions for concrete and cement formulations and processes for using the same
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.
Owner:HEXION INC
Asphalt mixture grading design method based on grading interlocking and voids in mineral aggregate
InactiveCN108280310AWith structural strengthWith structural stabilityDesign optimisation/simulationSpecial data processing applicationsAbsorption rateUltimate tensile strength
Owner:嘉兴市嘉海建设有限公司 +1
Curing or sealing compositions for concrete and cement, and methods for the preparations and use thereof
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.
Owner:MOMENTIVE SPECIALTY CHEMICALS
Method for predicting pyrolysis kinetic parameters of biomass
InactiveCN106096238AAvoid computational complexitySpecial data processing applicationsInformaticsDesign–ExpertMathematical model
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
Design method of AC-25 asphalt mixture
ActiveCN103174075AGood road performanceImprove road performanceIn situ pavingsRoads maintainenceVertical vibrationEngineering
Owner:CHANGAN UNIV
Method for preparing cattle feed from chicken manure
InactiveCN105941888ARetain nutritionGreat tasteFood processingAnimal feeding stuffBiotechnologyFodder
The invention relates to the technical field of feed, in particular to a method for preparing cattle feed from chicken manure. The method has the advantages that fermentation treatment is carried out on the chicken manure, fermentation treatment is carried out on pasture, then the chicken manure and the pasture are in mixture designs, accordingly, nutrition in the chicken manure can be reserved to a great extent, harmful germs in the chicken manure can be killed, taste of the chicken manure can be improved, the content of harmful impurities in the chicken manure can be effectively reduced under mutual effects of the fermented pasture and the fermented chicken manure, and the palatability of the cattle feed can be improved.
Owner:SONGTAO TIANNONG FARMS
Design method of ac-25 asphalt mixture
ActiveCN103174075BImprove road performanceIn situ pavingsRoads maintainenceVertical vibrationEngineering
The invention discloses a design method of an AC-25 asphalt mixture. The design method adopts a vertical vibration method and comprises the steps of raw material selection and testing, design of mineral aggregate gradation, determination of the optimal asphalt-aggregate ratio, detection of performances and the like. Experimental verification indicates that the asphalt mixture designed by the method has good pavement performance, is little in amount of asphalt and is simple and convenient to operate, and the asphalt can be saved by 8-10%.
Owner:CHANGAN UNIV
Stable finished warm-mix rubber-modified asphalt and preparation method thereof
ActiveCN103709771BEvenly dispersedImproved high temperature storage stabilityClimate change adaptationBuilding insulationsHigh temperature storageWaste rubber
The invention discloses stable type finished warm-mixing rubber modified asphalt and a preparation method thereof. The modified asphalt comprises the following components in percentage by mass: 76-84% of matrix asphalt, 0.5-5% of modifier, 16-22% of waste rubber powder, 0.5-3% of stabilizer, 1-8% of toughener and 0.1-10% of warm mixing agent. According to the stable type finished warm-mixing rubber modified asphalt, the storage stability (especially high-temperature storage stability) of the modified rubber asphalt is improved through the mixture design, so that the modified asphalt is suitable for construction at a high / low temperature and especially suitable for construction in winter, high-temperature viscosity reduction and low-temperature viscosity increase; and the preparation process of the stable type finished warm-mixing rubber modified asphalt does not need special equipment, and is simple to operate, low in manufacturing cost and suitable for large-scale construction use.
Owner:南京宁通智能交通技术研究院有限公司
Concrete mix designs using a plurality of reinforcement fibers systems
A concrete mix having sand, fine aggregates, binder, fibers, and various admixtures is provided. The mix has a consistency from S2 to SF3, a compressive strength in the range of 30-80 MPa and a ductility represented by fc, ffl, fR1 and fR3 values, wherein the concrete mix contains at least 390 Kg of binder, the concrete mix has a paste volume of 300-600 liters, the concrete mix contains at least two systems of fibers and a general admixture system that is composed of at least 2 sub-admixture systems.
Owner:CEMEX RES GRP AG
A Design Method of Modified Asphalt Mixture Applicable to Areas with Different Temperature Differences
ActiveCN106938899BImprove low temperature crack resistanceImprove the design levelDiseaseCrack resistance
The present invention belongs to the technical field of road engineering, and particularly relates to a design method of a modified asphalt mixture for areas having different temperature difference. The design method comprises: determining the annual temperature difference of areas, selecting the type of an asphalt mixture; selecting and testing raw materials, carrying out grading design on mineral aggregate, determining an oil-stone ratio, preparing a modified asphalt mixture, inspecting the cooling performance and the road performance, determining the thermal change point and the cold change point, and evaluating the modified asphalt mixture according to the thermal change point and the cold change point. With the design method of the present invention, the difference of the pavement temperature diseases in different areas in our country can be effectively solved, the quantitative index can be provided for the evaluation of the high temperature stability and the low temperature crack resistance, the modified asphalt mixture with characteristics of high temperature road performance improving and low temperature crack resistance enhancing can be developed, and the high engineering practice value is provided.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Toilet flushing system based on negative pressure drainage
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
A design method of atb-25 asphalt mixture
Owner:CHANGAN UNIV
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