2032 results about "Concrete composites" patented technology

The present invention discloses a regenerated concrete compound material, which is made of the following components according to weight ratio: 37-53 percent of regenerated aggregate prepared by the building waste residue, 14-30 percent of regenerated fine aggregate prepared by the building waste residue, 6-14 percent of industrial waste sand, 14-18 percent of common cement, 6-8 percent of water, additive and glue powder of waste tyre. The preparation method for the regenerated concrete is that: (1) the waste tyre is crushed and then is dipped in the coupling agent solution, and is to be dried; (2) the building waste residue is crushed, screened to obtain the regenerated coarse or fine aggregate; (3) the additive is added into the aggregate and the waste sand for mixing and blending evenly; (4) the regenerated aggregate, waste sand, cement, water and glue powder are milled evenly and then the regenerated concrete compound material can be obtained. The present invention can solve the problems that the building waste residue is difficult to be treated and the entironment is polluted and deteriorated greatly and so on. The building waste residue is to be used for replacing the natural aggregate that can decrease the consumptions to the natural aggregate in the building industry, solve the problems that the natural aggregates are increasingly lacked and the entironment is damaged by the exploitation of the sand stone. The present invention can protect the living environment for the human, guarantee the sustainable development for the society and accord to the requirement of the sustainable development.

The invention discloses a steel-concrete composite beam adopting a corrugated steel web, which relates to a corrugated steel web composite beam capable of being applicable to highway bridges and railway bridges. The beam comprises a top flange concrete composite plate, a corrugated steel web plate, a top flange steel plate, a box beam bottom plate and male pin connecting pieces, wherein the top flange comprises a precast concrete slab and a cast-in-place concrete layer; and the top flange concrete composite plate is connected with the top flange steel plate into a whole through the male pin connecting pieces welded on the top flange steel plate. By adopting the structure, the problems that the site workload and the construction difficulty for casting a bottom flange concrete slab of a traditional corrugated steel web composite beam are large, the construction quality is difficult to guarantee and the like are overcome on the premise that the quantity of steel is hardly increased, meanwhile, the tensile property of the steel plate is fully played, the bearing capacity, the rigidity and the cracking resistance of the structure are improved, and the durability of the structure is improved, therefore, the corrugated steel web composite beam has the advantages of simple structure, reasonable stress, quick and convenient construction, and good technical and economic benefits.

The invention relates to the field of track beams, in particular to a straddle type single-track double-box rectangular steel-concrete composite track beam structure. The straddle type single-track double-box rectangular steel-concrete composite track beam structure comprises two steel-concrete track main beams parallel to each other; the two steel-concrete track main beams are connected through crossbeams below and a low plain longitudinal; each steel-concrete track main beam comprises a steel beam structure with a box-type cross section and a concrete cuboid structure with a rectangular cross section; each concrete cuboid structure is positioned above the corresponding steel beam structure and is connected with the steel beam structure through shear nails; the span of each steel-concrete track main beam is 30-80 meters; the cross beams are I beams and are in bolt connection with cross beam connecting plates of the steel-concrete track main beams; the low plain longitudinal is a diamond truss, and plain main rod piece parts are respectively connected with the steel-concrete track main beams and the cross beams. The straddle type single-track double-box rectangular steel-concrete composite track beam structure can be suitable for building double-line large-span track beams, and the double-line large-span track beams are large in span, high in transverse stiffness and high in transverse stress performance structurally.

The invention discloses a mixed steel-concrete composite frame structure, belonging to the technical field of engineering structure. The frame structure comprises a composite column of reinforced special shaped steep pipe concrete, a composite beam of concrete-steel pipe partially filled lightweight aggregate concrete and a reinforced concrete floor; wherein, the composite column of reinforced special shaped steep pipe concrete comprises a steel pipe of a special shaped column, a longitudinal bar of the column, stirrup of the column, concrete outside the steel pipe of the column and core concrete inside the steel pipe of the column; the composite beam of concrete-steel pipe partially filled lightweight aggregate concrete comprises a steel pipe of the beam, an inner separator, a longitudinal bar of the beam, stirrup of the beam and concrete outside the steel pipe of the beam; the space formed by the steel pipes of the beam, which are positioned on the lower part of the steel pipe at the end of the beam and on the upper part of the steel pipe on the midspan of beam, and the inner separator is filled with the core lightweight aggregate concrete in the steel pipe of the beam. The frame structure of the invention has excellent fire and shock resistance and relatively light dead load, can be used in building structures such as residence and is convenient for effective use of building space.

The invention relates to a fiber-reinforced plaster-free dismantle-free integrated heat-preservation template and an exterior wall heat-preservation construction process. The heat-preservation template is formed by compounding an expandable polystyrene (EPS) aggregate layer on the surface on one side of a fiber concrete plate. The process comprises the following steps that: a fiber concrete template and a fiber concrete composite heat-preservation template are vertically fixed on the two sides of the position of a pre-built wall body respectively, wherein the fiber concrete template and the fiber concrete composite heat-preservation template are fixed together through pull bolts; and reinforcements are arranged and concrete is poured between the fiber concrete template and the fiber concrete composite heat-preservation template, so that a reinforced concrete bearing wall body is formed. The integrated permanent dismantle-free heat-preservation template meets the requirements on heat preservation of an exterior wall and flatness of a plaster layer in place of the exterior wall template, an outer heat-preservation layer and the plaster layer. In the process, the template is not required to be removed, the heat preservation, heat insulation and water proofing performance are good, the thickness of the wall body is reduced, a great amount of materials and labor are saved, the construction period can be shortened, and the energy conservation requirement and the requirements on adhesion between the permanent template and a basic layer and flatness of a surface layer can be met. The template is suitable for high-rise and small high-rise buildings; the dwelling environment can be improved; the building function quality is improved; the building development benefit is improved; and the template has a wide application prospect.

The invention discloses an outsourcing multi-cavity steel plate concrete composite shear wall and a construction method thereof. The outer periphery of the wall is surrounded by steel plates, and the interior of the wall is divided into several interconnected cavities filled with concrete. During the construction of the present invention, the concealed column cavities at both ends are hoisted to the poured lower shear wall and connected and fixed, and then the wall is hoisted to the poured lower shear wall and connected with the concealed column cavity and the lower shear wall. The walls are respectively connected and fixed, then the reinforcement cage/net is placed in the cavity, and finally concrete is poured in the cavity of the concealed column and the cavity of the wall. The advantages of the present invention are as follows: 1. The structure is reasonable, the performance is good, and the ductility is greatly improved. 2. Give full play to the performance advantages of steel and concrete, save materials and cost. 3. Simple connection with floor steel beams, outrigger trusses and other components, simple and convenient construction process and high efficiency. The invention is suitable for high-rise and super high-rise buildings, and has wide application range and development space.

The invention relates to a steel-concrete composite column anti-seismic anti-torsion test loading device and a manufacturing method thereof, and belongs to the technical field of structure engineering. The steel-concrete composite column anti-seismic anti-torsion test loading device comprises a loading frame, a top beam, a base, an antifriction plate, a thrust jack, and two electro-hydraulic servo actuators. The loading frame is obtained by welding steel plates. All column bases of the loading frame are provided with bolt holes and are fixedly connected to the ground by ground anchor bolts. The top beam is obtained by welding steel plates. The bottom of the top beam is provided with bolt holes and is fixedly connected to a top steel plate of a test piece by bolts. The base is obtained by welding steel plates. The top of the base is provided with bolt holes and is connected to a bottom steel plate of the test piece by bolts. An upper end of the thrust jack is connected to the loading frame by a rolling bearing. The antifriction plate is horizontally arranged in the center of the top of the top beam. The electro-hydraulic servo actuators are arranged horizontally and are fixedly connected to the top beam. The steel-concrete composite column anti-seismic anti-torsion test loading device solves the problem of the prior art, has a simple structure, is convenient for use, has strong universality, can be used for anti-seismic anti-torsion tests on various steel-concrete composite columns, and has wide application prospects.

A wood concrete composite system (100,200) has a wood construction component (110, 111, 112, 210, 211), at least single intermediate layer (140, 141, 142, 143, 230, 231, 232) and a concrete construction unit (150, 151, 152, 240, 241). The concrete construction unit (150, 151, 152, 240, 241) faces at least with one side towards the wood construction component (110, 111, 112, 210, 211). The at least single intermediate layer (140, 141, 142, 143, 230, 231, 232) creates at least a partial uncoupling between the wood and concrete.

A mold-concrete composite crossbeam includes a H-steel composed of upper and lower flanges and a web connecting them; a concrete member formed in a length direction of the H-steel to expose the upper flange out but bury the lower flange and the web partially; deck plate supports installed to both upper side edges of the concrete member to support a deck plate placed thereon; a reinforcing steel bar installed around the H-steel; a mold including a bottom detachably coupled to a lower end surface of the concrete member, and sidewalls formed in parallel to both sides of the bottom and detachably coupled to both end sides of the concrete member; a lateral reinforcing member coupled across both sidewalls; a side reinforcing member installed to an outer side of the sidewalls in a length direction; and bottom reinforcing members installed across a lower surface of the bottom.

The invention discloses a concrete composite containing silicon micro powder and a preparation method thereof. The concrete composite is mixed and prepared from gelled material, additive, coarse aggregate, fine aggregate and water, wherein the dosage range of the gelled material in the concrete is 250 kg/m3-700 kg/m3, the gelled material contains 10 kg/m3-200 kg/m3 of silicon micro powder, and the balance is the admixture of cement and mineral. By using the concrete composite and the preparation method, concrete hydration temperature rise can be obviously reduced, the possibility of concrete cracking is reduced and the durability of concrete is effectively improved. The concrete composite and the preparation method can be prepared into concrete suitable for various purposes.

The invention discloses an integral type thermal insulation building, which belongs to the technical field of building engineering. The problem to be solved is to provide the integral type thermal insulation building. The adopted scheme is that the integral type thermal insulation building at least uses one of an inorganic thermal insulation structure layer and an inorganic thermal insulation layer, wherein the inorganic thermal insulation structure layer is formed by combining one or two of inorganic thermal insulation load-bearing concrete and inorganic thermal insulation load-bearing building blocks; and the inorganic thermal insulation load-bearing concrete comprises the following components in a mixing weight ratio (kg/m<3>) of concrete composite light bone admixture to cement to sandto stone to porcelain granule to fly ash to water to concrete admixture of (6-225):(200-800):(300-700):(500-1,600):(150-650):(10-600):(80-400):(0.1-200). The integral type thermal insulation buildingcan be widely applied to the technical field of buildings.

The invention relates to a dual-way steel-laminated slab concrete composite floor, belonging to a new large span floor structure, comprising a cross steel beam, a prefabricated slab and a later pouring concrete layer, wherein the cross steel beam is an I shaped cross section or box section steel beam; the prefabricated slab, a common reinforced concrete slab or a prestressed concrete slab, is held on the cross steel beam and covered on the grids between the steel beams; the later pouring concrete layer is concrete poured on the prefabricated slab and the steel beam. The invention has the advantages of low structure height, high bearing capacity, stiffness, bilateral support effect, saved forming procedure and formwork, reduced the wet work amounts of site concrete, favorableness to the three-dimensional construction, and shortened construction period.

A segment-assembled type pier column member with a steel-concrete composite structure includes a reinforcement tube embedded in a pile cap, wherein the reinforcement tube is connected with a bottom of a lower segment of a hollow steel tube pier and is poured with concrete, and pier columns in upper and lower segments are reinforced by means of segment connecting and being embedded with local reinforcing meshes. A steel cross beam is connected with an upper segment of the hollow steel tube pier in an assembled way. A pre-stressed tensioning duct is reserved between the steel cross beam and the pier column in the upper segment.

A lightweight concrete composite is utilized to form blocks. The lightweight concrete composite includes polystyrene, cement, water, and glass. The blocks are advantageous for building retaining structures in the form of walls, enclosed areas, raised gardens, flower beds, and the like because the blocks are lightweight, easily cut and stacked, and more importantly do not introduce harmful chemicals into the environment.

The invention relates to a steel-tube concrete frame-steel frame-concrete composite shear wall and the manufacturing method, belonging to a shear wall and the manufacturing method. The shear wall comprises frame and shear wall board. Steel bar mesh made by steel bar group in transversal and longitudinal directions is made in shear wall board. Linked rib (11) is set between steel bar meshes. Between two rows of steel bar meshes concealed section steel support (2) and concealed steel bar (9) support are set. Section steel beam (4) is set in frame beam and steel tube concrete frame columns (3) are set at two ends of shear wall. The combination of section steel beam (4), steel tube concrete frame column (3), concealed section steel support (2) and concealed steel bar support (9) is set in shear wall and steel frame (1) is set in the concrete shear wall. The concealed support can be combined in BA-shape, X or V-shape. The shear wall in invention is provided with large initial rigidity, high load capacity, slow attenuation of load capacity and rigidity, good total aseismic consumed energy behavior, relative stability of later aseismic performance and lessened damage of bottom shear slip.

The invention discloses an intelligent FRP (Fiber Reinforce Plastic)-concrete composite structure and a manufacturing method of the intelligent FRP-concrete composite structure. The intelligent composite structure comprises an intelligent FRP layer, a reinforced concrete core and an anchoring device, wherein the intelligent FRP layer is formed by carbon fibers or carbon fiber mixed with other fibers and impregnated by resin, and in the composite structure, the intelligent FRP layer both serves as structural material and plays a sensing function. The intelligent FRP layer is wrapped on the stressed side of the reinforced concrete core, certain prestress is applied on the intelligent FRP layer to better play the high strength property of the FRP, and the intelligent FRP layer is connected with the reinforced concrete core through resin adhesion and mechanical connection of anchorage device. The intelligent FRP-concrete composite structure not only has high carrying capacity, self sensing function, excellent corrosion resistance and high durability, but also has strong designability of performance and structure.

The invention relates to a method for widening a steel-concrete combination, which is a technological method for widening an original concrete bridge. The method widens the original concrete bridge by adopting an integrally and jointly stressed steel-concrete composite beam comprising a concrete bridge deck and a steel beam. The method comprises the following steps: firstly roughening and reinforcing bar loading treatments are carried out on the main beam of the original bridge, a steel plate-concrete composite anchoring and connecting piece is arranged to connect the main beam with the transverse connecting steel beam of the original bridge; the main beam of the original bridge is connected with the steel-concrete composite beam into a whole body through the transverse connecting steel beam; roughening and transverse connecting reinforcing bar loading are carried out on the bridge deck of the original bridge, the bridge deck of the original bridge is extended to the upper bridge deck area of a widened beam, and the widened bridge deck is concreted to form a whole body. Compared with a traditional widening method, the method has the advantages that the structural height can be reduced, the structural dead weight can be reduced, and the lower structural cost can be reduced. Meanwhile, the composite beam is convenient to be produced, the installation quality is high, the construction is economic, convenient and fast, the influence to the normal traffic of the current bridge is small, and the deficiency of the method for widening the traditional concrete beam is overcome.

The invention discloses high strength concrete and its preparation method, and relates to the technical field of building materials. 1 m<3> of the high strength concrete comprises the following ingredients: 200-300 kg of ordinary Portland cement, 40-50 kg of mineral powder, 15-30 kg of rubber particles, 500-800 kg of fine aggregate, 600-900 kg of coarse aggregate, 20-60 kg of a concrete composite additive, 50-100 kg of polypropylene fiber, 100-200 kg of water, 45-90 kg of phosphorous slag powder, 2-3 kg of a corrosion inhibitor, 5-10 kg of a water reducing agent, and 10-20 kg of a reinforcing agent. According to the prepared concrete product, compressive strength is remarkably raised, cracks are minimized, and life of concrete structures is prolonged. In addition, the preparation method is simple, and production efficiency is high.

The invention discloses a prefabricated assembled steel-concrete composite beam connected by adopting a high-strength bolt. The composite beam main comprises a steel beam, a prefabricated reinforced concrete slab and a shearing resistant bolt connection pair, wherein reasonable structural measures are reserved on the steel beam and the prefabricated concrete slab, and the shearing resistant bolt connection pair is adopted to connect the steel beam with the prefabricated concrete slab, so that compared with a situation that the beam-slab connection part is in rigid connection and the shear capacity is not substantially reduced, strong ductility and deformability can be obtained. When a prefabricated slab needs to be replaced, by detaching the nut of the shearing resistant bolt, the prefabricated slab is separated from the steel beam, so as to realize detaching and replacement of the prefabricated slab. All components adopted in the invention are assembled and connected on site, so that field welding work and template engineering can be reduced, the industrial assembly efficiency of buildings is improved, the function of detaching, separating and replacement of the beam-slab main body structure of the assembled composite structure can be achieved, and the novel architectural concept of capability of detachment and energy conservation and environment protection of building components can be embodied.

The invention discloses a silica micropowder-containing concrete composite admixture and a preparation method thereof. The silica micropowder-containing concrete composite admixture consists of 10 to 95 weight percent of silica micropowder and 5 to 90 weight percent of mineral powder, wherein the silica micropowder is prepared from natural quartzite through crushing, grinding and other technology. The preparation technology comprises the following steps of: grinding the quartzite into superfine powder and uniformly mixing with other mineral powder according to a ratio. The prepared composite admixture can replace 5 to 80 percent of cement, the concrete cement consumption and water consumption can be greatly reduced when the composite admixture is prepared into high-performance concrete, and the composite admixture has the characteristics of resource and energy conservation and environment friendliness.

The invention discloses a C180 strength-grade concrete for a formed steel concrete composite structure, which is composed of 446 parts of cement, 828 parts of fine aggregate, 1077 parts of coarse aggregate, 94.8 parts of water, 17 parts of concrete superplasticizer, 1 part of defoaming agent, 82 parts of silicon powder, 116 parts of expanding agent, 7 parts of activator and 36 parts of expanding agent. The preparation method comprises the following steps: blending the concrete superplasticizer and activator into weighed water to obtain a mixture, sequentially adding the fine aggregate and 1/3 of the mixture into a stirrer according to parts by weight, and stirring; adding the coarse aggregate and 1/3 of the mixture, and stirring; adding the cement, expanding agent, silicon powder and fly ash, and stirring; and adding the defoaming agent and the rest of mixture, stirring and discharging. The concrete can obviously improve the bonding property between the formed steel and the concrete in a natural state, effectively displays the respective mechanical properties and the synergic working performance of the steel and concrete, greatly enhances the loading capacity, service performance and durability of the structural member, and has high volume stability and economical efficiency.

The invention discloses a processing method for building waste foamed concrete composite heat preservation building blocks. The invention provides a processing method for the building waste foamed concrete composite heat preservation building blocks. By virtue of the processing method, the performance of a recycled material can be optimized to the maximum extent, so that the compression strength, the shear strength and the heat preservation performance of a finished product can be guaranteed. Each building block comprises a base body and a heat preservation core body. A building block preparation process comprises base body forming, core body preparation, maintaining and drying working procedures; each base body comprises cement, an active mixed material, a modifier and a recycled aggregate. A processing method for the recycled aggregate comprises the steps of (1) classifying and initially sorting building waste; (2) roughly crushing building waste to prepare granular recycled coarse aggregates of which the dimension is smaller than 10mm; (3) performing mechanical enhancement on the recycled coarse aggregates, adding natural sand into the recycled coarse aggregates according to a weight ratio of 1:(0.2 to 1), and taking fine sand, which has the particle size of 0.25-0.5 mm, in the mechanically enhanced aggregates for later use. According to the method, the building blocks are high in bonding strength and uniform, the water absorption property of a single unit is reduced, the production cost is lowered, and the production technology is simple and feasible.

This invention discloses a deep soft soil reinforce method. Its construction steps includes:(1)the vacuum well point declines water (2) vacuum electricity declines a water : vertically plugs electricity tube in a vacuum tube wells inside, installs electric system for vacuum tube wells and electron system the cathode connecting, electron and electron pipe system connecting to form the anode DC circuit; (3) low-energy strong ramming; (4) vibrating roll, flat ground; (5) adding concrete-pile : machine drills hole, adapting tube pump concrete for the construction technology-concrete composite construction of the foundations; (6) lays cushion : concrete pile in the top layer structure and the site uses static compaction cushion construction. This invention by vacuum precipitation and-concrete pile combination of approaches to achieve the reinforcement of the deep soft ground, breakthroughs in the tradition of deep soft soil to use reinforced concrete piles in the traditional concept and reduces the construction cost.