1526 results about "Ultra high performance" patented technology

Disclosed are apparatus and corresponding methodology for providing a base support, such as including concrete, and used such as for a wind-driven generator. Precast concrete cylinders are stacked in place upon a platform that may be partially precast and partially cast in place during assembly and supported, in certain embodiments, by plural concrete legs, the other ends of which are supported on a unitary or subdivided concrete foundation. In other embodiments, the platform may be supported by ribbed concrete panels. The concrete cylinders are glued together using an epoxy and then secured by an internal vertical post tension system extending from the platform to the upper most cylinder. Different types of concrete are used between upper and lower sections of the stacked cylinders. The lower section uses reinforced concrete while the upper section used ultra high performance fiber reinforced concrete.

A geopolymer composite ultra high performance concrete (GUHPC), and methods of making the same, are provided herein, the GUHPC comprising: (a) a binder comprising one or more selected from the group consisting of reactive aluminosilicate and reactive alkali-earth aluminosilicate; (b) an alkali activator comprising an aqueous solution of metal hydroxide and metal silicate; and (c) one or more aggregate.

PCT No. PCT / FR96 / 00122 Sec. 371 Date Jul. 24, 1997 Sec. 102(e) Date Jul. 24, 1997 PCT Filed Jan. 24, 1996 PCT Pub. No. WO96 / 22953 PCT Pub. Date Aug. 1, 1996An ultra-high performance composite concrete, with low cement and fiber content and having good mechanical properties as well as good impacts, shocks and projectile protection properties, includes hydraulic binder, aggregates, an admixture of metal fibers. Particularly, the composite concrete includes 70% to 85% of particles (A) having a particle size distribution which ranges from 0.01 to 3 mm up to particle size distribution which ranges from 0.01 to 0.50 mm; 2% to 10% of particles (B) having particle size of between 0.01 and 1 mu m; 3% to 20% of hydraulic binder; 0.1 to 3% of a dispersant or plasticizer; 0.05% to 8.5% of fibers; and, mixing water, wherein the percentages being weight percentages based on the sum of the weights of constituents a) to d).

The present invention discloses an ultra-high performance concrete with compressive strength of 300MPa or more and a preparation method, and the ultra-high performance concrete comprises the following components in parts by mass: 100 parts of cement, 15 to 70 parts of an admixture, 1 to 5 parts of a nanomaterial, 1 to 20 parts of a viscosity reducer, 110 to 290 parts of sand, 20-50 parts of fibers, 2 to 5 parts of a superplasticizer, 0.1 to 0.5 part of a powder dispersing agent and 15 to 25 parts of water. The ultra-high performance concrete has ultrahigh mechanical properties, the compressive strength after heat curing at 85 DEG C-90 DEG C in standard atmospheric pressure environment can be 300MPa or more, the flexural strength is greater than 55MPa, and the ultra-high performance concrete has excellent working performance and ultrahigh durability.

The invention relates to a method for detecting unknown poison by establishing a liquid chromatography-mass spectrometry database, in particular to a method used for detecting unknown poison during food poisoning. According to the method, firstly, an ultra-high performance liquid chromatography-quadrupole-time-of-flight mass spectrometry method is used for establishing a liquid chromatography-mass spectrometry database of common poison; then, a sample is subjected to supersonic extraction with methyl alcohol or acetonitrile, liquid chromatography-mass spectrometry data of an extracting solution are measured similarly and searched and compared in the liquid chromatogram-mass spectrometry database of common poison according to the retention time of the sample and mass spectrometry fragments, and the variety of the unknown poison in the sample is judged; and the unknown poisoning sample is simply extracted and directly measured and compared, and a screening result can be acquired in one hour, so that the detecting and treating time of the sample is greatly shortened, the detecting efficiency is improved, and technical support is provided for related events such as food poisoning and the like caused by unknown reasons.

The invention concerns the use of organic fibers having a melting point lower than 300° C., an average length l more than 1 mm and a diameter Ø not more than 200 μm, in ultra high performance concrete for improving the concrete fire resistance, the amount of organic fibers being such that their volume ranges between 0.1 and 3% of the concrete volume after setting and the concrete having a compressive strength at 28 days of at least 120 Mpa, a bending strength of at least 20 Mpa, and a spread value in non-hardened state of at least 150 mm, the values being for a concrete preserved at 20° C., the concrete consisting of a particularly hardened cement matrix wherein metal fibres are dispersed.

The invention relates to a preparation technology for concrete with super high performance, and belongs to the field of concrete technology in civil engineering. The invention is characterized in that: 1 m<3> of concrete contains 380 to 420 kg of cement, 680 to 740 kg of fine aggregate, 1120 to 1190 kg of coarse aggregate, 130 to 160 kg of water, 50 to 75 kg of fly ash, 25 to 64 kg of silica fume, 6.1 to 10.4 kg of a high performance water reducer, 0.05 to 0.25 kg of multi-walled carbon nanotubes and 15 to 25 kg of nanometer silica. The preparation technology is to carry out mechanical stirring for 180 to 240 seconds. The carbon nanotubes are added in the form of dispersion liquid, and a dispersant is cetyl trimethyl ammonium bromide (C16TAB), wherein the dispersion liquid is prepared according to the following portion MWNRs : C16TAB : water = 0.48 g : 4.1 g : 40 ml. The invention enables the super high performance concrete to have an enhanced mechanical property and lasting quality, a drastically increased service life, and capacity of being used in projects where requirements for the performance of concrete are high, for example, large-scale cross-sea bridges, super high buildings, and the like. The invention has a high utility value.

The invention provides ultra-high-performance abrasion-resistant high manganese steel and the production method thereof. The chemical compositions of the steel are that: carbon of 1.00 to 1.50 percent; manganese of 10.5 to 20.0 percent; silicon of 0.30 to 0.80 percent; chromium of 1.3 to 2.8 percent; sulfur of less than or equal to 0.040 percent; phosphorus of less than or equal to 0.070 percent; titanium of 0.06 to 0.20 percent; vanadium of 0.10 to 0.40 percent; boron of 0.002 to 0.010 percent; magnesium of 0.06 to 0.3 percent; rhenium of 0.08 to 0.4 percent; nitrogen of 0.05 to 0.2 percent; the remainder is iron. The production method is that: when the molten steel temperature reaches between 1500 and 1550 DEG C, the nitrogen and the calcium are added within 5 minutes after the molten steel is reduced, the aluminum is inserted and the vanadium (2 to 5 kg / t) and the titanium (4 to 10 kg / t) are added within 10 minutes before steel tapping, the rare earth magnesium (2 to 6 kg / t) is added into a tank when one-third steel is tapped, the rare earth silicon (1 to 4 kg / t) is added into the tank when one-second steel is tapped, the boron (0.1 to 0.3 kg / t) is added into the tank when two-third steel is tapped, the casting temperature of the molten steel is controlled between 1430 and 1460 DEG C. The invention adopts new alloying process, improves the abrasion- resistant performance and the comprehensive mechanical performance of the high manganese steel.

The invention belongs to the field of building materials, and especially relates to ultra-high performance concrete with micro-expansion and compensation shrinkage and a preparation method thereof. Raw materials include, by weight, the following components: 1 part of cement, 0.05-0.2 part of fly ash, 0.2-0.5 part of silica fume, 0.1-0.25 part of mineral powder, 0.05-0.2 part of quartz powder, 0.9-1.2 parts of quartz sand, 0.04-0.2 part of an expanding agent, 0.01-0.03 part of a water reducing agent, and 0.01-0.03 part of an expansion promotion reinforcing agent. A mixing amount of super absorbent resin is 0.4%-0.8% of a cementing material; a volume mixing amount of steel fiber is 1%-3% of a total volume of the concrete; the water-to-binder ratio is 0.16-0.22; and the compressive strength is 100-160 MPa. The ultra-high performance concrete with the micro-expansion and the compensation shrinkage has the characteristics of micro-expansion, high strength, high toughness, excellent workingperformance, and the like, and solves the problem that the expanding agent is difficult to produce effective expansion in the ultra-high performance concrete with a low water-to-binder ratio, and so,the risk of early shrinkage cracking of the ultra-high performance concrete is reduced, and the ultra-high performance concrete can maintain the micro-expansion for a long time.

The invention discloses a method for controlling the quality of ginkgo leaves and an extract thereof. After the screening of a great quantity of experiments, the method adopts ultra-high performance liquid chromatography for detection; and the method can be used for detecting three types of components including flavone, terpene lactones and phenolic acid, twenty-four active compounds in total, in the ginkgo leaves and the extract of the ginkgo leaves. The results of the experiments prove that the method is high in detection sensitivity and good in stability, and can be used for objectively, comprehensively and accurately evaluating the quality of ginkgo leaf medicines, the extract of the ginkgo leaves and ginkgo leaf preparations, thus having important significance on controlling the quality and guaranteeing the clinical treatment effect.

The invention discloses a steel-super high performance concrete composite beam based on a ribbed plate type bridge deck and a construction method. The construction method includes the following steps that step1, steel beams are machined, manufactured and installed; step2, shearing force connecting parts are welded; step3, the super high performance concrete bridge deck is constructed; step4, a guardrail or an anti-collision wall is constructed; step5, bridge deck pavement is constructed, wherein the super high performance concrete bridge deck and the steel beams are fixed through the shearing force connecting parts, the cross section or / and the longitudinal section of the super high performance concrete bridge deck is / are of a ribbed plate structure, and pre-stressed reinforcements can be arranged on a longitudinal rib region or / and a transverse rib region. The composite beam is reasonable in stress, high in strength and capable of substantially reducing the structure dead weight, effectively avoiding defects at a hogging moment region of a composite continuous beam and bringing tensile strength, compressive strength and high durability of super high performance concrete into full play; the composite beam has the advantages of being small in building height, high in rigidity, small in dead weight, good in durability, crack resistance and fatigue resistance and the like, and has great practical value and good economic benefits.

The invention relates to a bridge deck structure of a steel bridge, in particular to a steel and ultra-high performance concrete combined bridge deck structure, comprising a steel bridge deck, an ultra-high performance concrete layer is coated above the steel bridge deck, a bridge deck pavement layer is coated above the ultra-high performance concrete layer, and the ultra-high performance concrete layer is internally provided with reinforced bars. The steel and ultra-high performance concrete combined bridge deck structure has the advantages of small construction height, large stiffness, good binding performance between combined layers, good durability, good fatigue resistance, little vehicle impact and the like.

The invention discloses an ultra-high performance hybrid fiber concrete shield segment and a preparation method thereof. The ultra-high performance hybrid fiber concrete shield segment is of a reinforced concrete structure which consists of a steel skeleton and concrete, wherein the reinforcement ratio of used main reinforcements is 0.5%-1.0%, the distances of the main reinforcements are 150-300mm, the grades of steel reinforcements are not less than three, the smallest steel reinforcement distance of distributed reinforcements is 400mm, the biggest steel reinforcement distance of used distributed reinforcements is 2000mm, and the grades of the steel reinforcements are not less than two. The ultra-high performance hybrid fiber concrete shield segment is made from ultra-high performance hybrid fiber concrete, and comprises cementitious materials, sands, crushed stones, steel fibers, synthetic fibers, water reducer, defoamer and water. The ultra-high performance hybrid fiber concrete shield segment is less in dosage of the steel reinforcements and concrete and high in early strength, can prevent steam preservation, reduces energy consumption, and is green, energy-saving and environmentally friendly. The ultra-high performance hybrid fiber concrete shield segment is strong in anti-burst performance when having a fire, excellent in toughness and crack resistance and excellent in durability, enables edge joints not to easily break, and overcomes the defects of traditional segments.

A concrete casting method uses a vacuum to remove air from the concrete material, and further involves pouring the cement material over three-dimensional interlocking inclusions before curing. The inclusions may be generally polyhedral structures formed by an annular or disc-shaped central structure that defines a parting plane for an injection mold, and various structures extending transversely to the central annular or disc-shaped structure to form the generally polyhedral shape. Alternatively, the inclusions may be formed by a hub and radial structures, from which extend circumferential structures that define the polyhedral shape. Other inclusion structures take the form of wires or tubes with multiple coils. The inclusions may be used in a variety of concrete structures, including earthquake or tornado proof housing structures, cylindrical supports structures, and armored structure including ships and submarines.

The invention belongs to the field of food inspection, relates to an assay determination method for endocrine disruptors in food, and particularly relates to a method for analyzing and determining a plurality of endocrine disruptors in milk powder and liquid milk. The method comprises the steps of dissolving a sample with water, adding an organic solvent mixable with water, extracting a to-be-detected material by ultrasonic, adding a sodium salt to make the organic solvent separated from a water phase to realize liquid-liquid extraction, taking an organic solvent containing quantitative to-be-detected material, purifying by extraction with a solid phase filled with C 18 materials, deriving by dansyl chloride, and analyzing and detecting four types of 26 endocrine disruptors in the food by using ultra-high performance liquid chromatography-quadrupole-time of flight-mass spectrometry at the same time. The method can overcome the disadvantages that a conventional technology cannot realize simultaneous analysis of the plurality of the endocrine disruptors in the food by once chromatographic sample injection, can increase sensitivity of the quadrupole-time of the flight-mass spectrometry, and realize accurate analysis of the endocrine disruptors in the food by using the quadrupole-time of the flight-mass spectrometry.

The invention relates to sea sand powder concrete. The sea sand powder concrete comprises, by weight, 450-750 parts of cement, 250-450 parts of active mineral admixture, 50-150 parts of inert admixture, 850-1400 parts of sea sand, 24-32 parts of high efficiency slushing agents, 145-220 parts of seawater, 2-4 parts of organic fiber and 78-250 parts of copper-bearing steel fiber with the thickness ranging from 0.08 mm to 0.35 mm. According to the sea sand powder concrete, a compact stacking structure principle is adopted, the interior of the concrete is almost seamless in communication channel through optimization of particle size gradation, and a channel of internal ion medium migration is further eliminated through secondary hydration of the active mineral additive, so that the powder concrete obtained by stirring the raw materials through the seawater and the sea sand is ultra-high performance concrete with high durability, corrosion resistance and high mechanic property.

The invention relates to a method for detecting a plurality of mycotoxins in a sesame paste, and particularly relates to a method which carries out pre-treatment by an optimized dispersive solid-phase extraction method (QuEChERS), and simultaneously detects 26 mycotoxins in sesame paste by ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS / MS). The method particularly comprises: extracting a sample twice with acid-containing acetonitrile-aqueous solutions with different concentrations, adding magnesium sulfate and sodium chloride into the sample extract for salting out, performing centrifugation, adding n-hexane into the obtained supernatant, performing vortex oscillation and degreasing, purifying the product with C18 and magnesium sulfate, performing vacuum concentration, dissolving the residues again with methanol and water in order to obtain a sample analytic solution, and detecting the solution by a multi-reaction monitoring mode of ultra-high performance liquid chromatography-tandem mass spectrometry. The method improves the detection efficiency, saves detection cost, is high in sensitivity, high in repeatability, and high in adding standard recovery rate, and can be extended to detection of other samples with a high grease content.

The invention belongs to the technical field of building materials, and particularly relates to ultra-high performance concrete mixed with hybrid fibers. The concrete is prepared from ordinary Portland cement, silica fume, floating bead fly ash, slag powder, HP-CSA, quartz sand, limonite ore, titanium alloy sand, water reducing agent, defoaming agent, steel fiber, basalt fiber, cellulosic fiber and water. The ultra-high performance concrete mixed with the hybrid fibers has the advantages that the problems that the water-binder ratio is low, the usage amount of cementing material is large, andthe incorporation of the high-performance water reducing agent increases the shrinkage of the concrete can be solved, the constraint problem caused by the shrinkage on the application of the ultra-high performance concrete fabricated precast unit can be overcome, and the toughness of products is drastically improved. The ultra-high performance concrete mixed with the hybrid fibers is applicable tovarious concrete projects with special structures such as long span and super high-rise, and is suitable for various types of fabricated buildings.

The invention provides graphene oxide ultra-high performance concrete with low cement consumption, which belongs to the technical field of building materials. The concrete comprises the following components in parts by weight: 100 parts of cement, 30-50 parts of silica fume, 60-120 parts of fly ash, 10-50 parts of slag powder, 80-120 parts of quartz sand, 30-50 parts of water, 20-50 parts of steelfiber, 2-10 parts of a water reducing agent and 1-10 parts of graphene oxide. The invention also provides a preparation method of the ultra-high performance concrete. The graphene oxide is compoundedwith the steel fiber concrete doped with the mineral fine powder, and the graphene oxide can promote cement hydration, improve the early and later strength of the concrete, improve the interface conditions of a matrix and steel fibers and improve the binding strength of the matrix and the steel fibers, so that the breaking strength of the concrete is improved. The graphene oxide can improve the pore structure of the concrete, so that the concrete is denser, the strength of the concrete is improved, concrete strength shrinkage caused by steam curing is avoided, and the durability of the concrete is further improved.

The invention discloses an ultrathin microwave antenna with ultra high performance, comprising a main reflecting surface, a secondary metal reflecting surface, a metal feed circular waveguide and a medium conical horn feed source, and all the components have the same rotary symmetry axis; the secondary metal reflecting surface is tightly connected with the metal feed circular waveguide by the medium conical horn feed source and is connected with the main reflecting surface; the bottom of the medium conical horn feed source is provided with a prolonging edge used for reflecting the surface wave energy of the medium conical horn feed source to further improve antenna gain; the sloping side of the medium conical horn feed source is provided with a plurality of outward or inward steps so as to ensure that the whole antenna has favourable matching, the whole surface antenna is convenient to process, and the yield is high.

The invention discloses an on-line analysis system for automatic pretreatment by adopting an ultra-high performance liquid chromatography / mass spectrum. The on-line analysis system has an automatic pretreatment mode and a post-column compensation mode, and comprises four chromatography pumps, two high-pressure switch valves, an automatic sample injector, an on-line diluter, an extraction column, an on-line filter, two sample rings, a miniature mixer, a chromatographic column, a tee joint, a mass spectrometry detector and the like. On-line dilution, extraction, desorption, separation, detection and post-column compensation analysis can be carried out on a target analyte in a liquid sample by combination of an on-line dilution / extraction / desorption device, a stigma focusing device, a post-column compensation device and an ultra high performance liquid chromatography / mass spectrum device, the overall analysis process is automatically controlled, and is high in accuracy and precision, and the on-line analysis system can be effectively applied to the analysis detection on trace organic compounds in a complicated liquid sample or a liquid extracting solution.

A cement dispersant (especially a dispersant for concretes with ultrahigh performance) comprising as a main component a water-soluble amphoteric copolymer obtained by copolymerizing (A) a polyamide-polyamine of an alkylene oxide adduct thereof with (B) (meth)acrylic acid or an alkali metal, ammonium, or alkanolamine salt thereof and (C) a polyalkylene glycol ester of (meth)acrylic acid in an A / B / C ratio of (10-40) / (10-40) / (50-80) (wt. %); and a concrete composition (especially an ultral high-performance concrete) containing the dispersant. The dispersant satisfies all of a water-reducing effect, slump flow retention, strength development, etc.

The invention belongs to the technical field of preparation of shape memory alloys, and discloses a 4D printing method and application of a titanium-nickel shape memory alloy. Pure titanium and pure nickel are matched and smelted, and titanium-nickel alloy bars are obtained; then alloy powder is prepared through a rotating electrode atomization method, the powder is screened, and titanium-nickel alloy powder with the grain size of 15 micrometers to 53 micrometers is obtained; and the obtained titanium-nickel alloy powder is placed in a discharge plasma assisted ball mill to be subjected to discharge treatment, the powder is subjected to surface modification, and finally the titanium-nickel shape memory alloy is formed by means of SLM forming. The phase composition of the obtained titanium-nickel shape memory alloy is composed of a B2 austenite phase of a CsC1 type structure, a B19' Martensite phase of a monocline structure and a Ti2Ni precipitated phase. The microstructure comprises nano-sized afterbirth-like crystals and micro dendrite, and the afterbirth-like crystals and the dendrite are alternately distributed in a layered manner. The advantages of being unique in organizationstructure, nearly fully dense and ultrahigh in performance are achieved.

The invention provides a method for detecting 31 common blood pressure-lowering and blood sugar-lowering drugs in blood by an ultra high performance liquid-mass spectrometry, and is characterized in that the method comprises the following steps: (1) confirmation of detected target compounds; (2) sample processing: processing a sample by an organic solvent protein-deposition method; (3) primary screening detection: carrying out primary screening detection by a multiple reaction monitoring (MRM) mode of the ultra high performance liquid chromatography-tandem mass spectrometry (UPLC-MS / MS) in different periods of time; (4) reexamining of the sample which is positive by the primary screening detection in the step (3): after treating and concentrating the sample which is positive by the screening detection, carrying out UPLC-MS / MS detection; and optionally, (5) reexamining of the sample which is positive by the reexamining detection in the step (4): reexamining by a high performance liquid chromatography-high resolution time-of-flight tandem mass spectrometry (HPLC-QTOF). According to a fact that the drugs have different retention time in the set detection conditions, a method for sectional detection is creatively completed. The required time for totally completing the detection of 31 drugs can be within 11 minutes.

The invention discloses ultra-high-performance decorative concrete and a preparation method thereof. The concrete consists of cement, industrial waste residues, fine aggregates, pigment, a defoamer, ahigh-efficiency water reducing agent, water and fibers. The prepared ultra-high-performance decorative concrete uses an active mineral additive and thus has good grain composition, the mechanical property of the ultra-high-performance decorative concrete is good, the appearance color can also be adjusted randomly, and the decorative concrete has certain decorative and artistic effect while beingused as a load-bearing structure; the prepared ultra-high-performance decorative concrete has excellent mechanical property, durability, decorative property, artistry and construction property; and plasticity of the concrete and constitutional features of the material are fully utilized, appropriate measures are taken during forming of walls and components, and therefore, the surfaces of the wallsand the components have decorative lines, patterns, textures, qualities and colors.

A method for measuring main carbonyl compounds in a main stream smoke of a cigarette through ultra high performance convergence chromatography is a method for measuring butyraldehyde, 2-butanone, propionaldehyde, crotonaldehyde, acrolein, acetone, acetaldehyde and formaldehyde in the main stream smoke. The method is characterized in that a filter leaf processed with a derivatization reagent is used to gather the main carbonyl compounds in the main stream smoke of the cigarette, the analyzing and measuring method is used to obtain the contents of the eight carbonyl compounds in the main stream smoke through ultra high performance convergence chromatography (UPC2). When the method provided by the invention is used to detect the contents of the main carbonyl compounds in the main stream smoke of the cigarette rapidly and effectively, the pretreatment is simple, the average relative standard deviation is less than 7%, and the average recovery rate of various indexes is between 75%-94%. The method has the advantages of rapidness, accuracy, high flexibility and good repeatability.

The invention discloses a low-viscosity low-shrinkage steam-curing-free ultra-high performance concrete, and relates to a novel material. The low-viscosity low-shrinkage steam-curing-free ultra-high performance concrete is prepared from the following ingredients in parts by weight: 650 to 800 parts of cement, 50 to 100 parts of fly-ash floating beads, 150 to 200 parts of silica fume, 30 to 50 parts of metakaolin, 30 to 50 parts of phosphogypsum, 50 to 100 parts of expansive agent, 1100 to 1200 parts of fine aggregate, 100 to 200 parts of fine steel fiber, 150 to 250 parts of water, and 10 to 20 parts of polycarboxylate superplasticizer; and the invention also discloses a method for preparing the low-viscosity low-shrinkage steam-curing-free ultra-high performance concrete. According to the invention, the preparation technology is simple, the low-viscosity low-shrinkage steam-curing-free ultra-high performance concrete can be prepared by a conventional process, and a hot curing system is not needed, so that a purpose of no steam-curing is achieved.

The invention provides an UPLC-MS / MS method for analyzing four categories and 29 types of restricted veterinary drug residues in animal foodstuff. The method is characterized in that an advanced QuEChERS method is adopted for conducting sample preprocessing, a sample is subjected to McIlvaine buffering liquid-acetonitrile extraction, an extracting solution is subjected to acidification and salting out, a small amount of acetonitrile phase is taken, a C18 and NH2 adsorbing agent is utilized for conducting dispersive solid-phase extraction and purification, after purification liquid is subjected to concentration and volume setting, an ultra-high performance liquid chromatography-tandem mass spectrometer (UPLC-MS / MS) is adopted to conduct detection. The problem that it is difficult for tetracycline class veterinary drug to be extracted and purified along with other types of veterinary drugs is solved, meanwhile the sample processing steps are simplified, the UPLC-MS / MS method has the advantages of being efficient, rapid, low in cost, simple and convenient to operate, good in purification effect and high in sensitivity, and the accuracy and precision both meet the requirement of a multi-residue analysis method.

A new class of ultra-high performance concrete with very high strength and very high tensile ductility (High Strength High Ductility Concrete) is provided that represents the culmination of two high performance cement-based composite systems, namely those of very high strength, and those of very high tensile ductility into a single composite system. The integration of high strength and ductility has been attained via the adoption of micromechanical analysis and design of fiber reinforced brittle matrix composites. In doing so, the new High Strength High Ductility Concrete material dramatically increases the energy absorption capabilities of structural systems employing this material, making it a very good candidate material where hurricanes, earthquake, impact and blast loads are a concern.

The invention provides a high-strength reinforcement built-in ultra high performance concrete (UHPC) beam member, which is particularly suitable for the field of beam members with high-rise, heavy load and long span structures. The member comprises UHPC and a reinforcement cage which is poured inside and is formed by high-strength reinforcement and common reinforcement. The beam member has the following advantages: the advantages of the UHPC and the high-strength reinforcement are fully utilized, thus effectively reducing the section of the member, improving the ductility of the member and enlarging the available space while saving materials and energy; and the beam member dispenses with application of prestress, has simple construction process, is suitable for prefabrication production, improves the construction speed and is beneficial to popularization and application of the two materials in the engineering and research and development of novel materials.