33results about How to "Shear strength" patented technology

The present invention relates to fullerene, nanotube, or nanofiber filled metals and polymers. This invention stems from a cross-disciplinary combination of electromagnetic and acoustic processing and property enhancement of materials through fullerene or nanofiber additives. Containerless processing (CP) in the form of electromagnetic field enduced and / or acoustic mixing leads to controlled dispersion of fullerenes, nanotubes, or nanofibers in various matrices. The invention provides methods of mixing that highly disperse and align the fullerenes, nanotubes, or nanofibers within the matrices of metals and polymers. The invention provides new compositions of matter and multifunctional materials based on processing, composition, and degree of in situ processing.

The invention discloses a reinforced concrete plate with a shear reinforcement steel channel frame at the periphery, and belongs to the field of building materials. The reinforced concrete plate comprises concrete, a dual-layer steel mesh reinforcement, steel channel and shear reinforcements, wherein the steel channel is welded to form the frame; the shear reinforcements are spot welded on the steel channel, form angles of 45 degrees together with the plane of the plate, and are positioned at the inner side edge of a steel channel opening corresponding to the end part of a reinforcing steel bar of the upper-layer steel mesh reinforcement; the steel mesh reinforcement comprises longitudinal reinforcements and transverse reinforcements which are arranged at intervals in a uniform staggered manner; the longitudinal reinforcements and transverse reinforcements are arranged at equal intervals; the steel mesh reinforcement serves as the framework of the plate and is arranged in the thickness direction of the plate in a layering manner; the periphery of the steel mesh reinforcement is welded to the steel channel frame, and the middle is wrapped with concrete. The reinforced concrete plate disclosed by the invention is simple in structure, convenient to manufacture, and excellent in bending resistance, shear resistance, and anti-seismic property, can realize standardized and industrial production of floor slabs, and has an important significance in realizing the industrial production target of steel structure buildings.

The invention discloses a device and a construction method for the reinforcement and reconstruction of a whole-body hugging dam and an earth-rock dam body, comprising an earth-rock dam body, an implanted steel pile and a steel concrete composite layer; It is driven into the earth-rock dam body, and the other end is left on the surface of the dam body. The steel-concrete composite layer includes sand-gravel concrete and anti-cracking steel mesh. The anti-cracking steel mesh covers the surface of the dam body and is fixed with each implanted steel pile, and the sand-gravel concrete is filled and covered. Anti-cracking steel mesh; the structure of the present invention makes the original soil and rock that can maintain the stability of the dam body and can resist and prevent water pressure leakage, erosion and damage only by the friction and cohesion between the original soil sand and gravel particles and the self-weight compactness. The dam body, the implanted steel pile, and the composite layer of steel concrete form a whole-body hugging structure like "the chopsticks are united and cohesive together", forming a solid dam like a whole rock and mountain, making it shear, flexural, compressive, and impact resistant. Has been greatly enhanced and a qualitative leap, and can be seamless and less seam surface beautiful.

The invention discloses an epoxy mortar used for repairing sea oil gas pipeline and a preparation method thereof, which belongs to the technical field of polymer mortar application. The epoxy mortar is composed of a component A, a component B and a component C, the component A is prepared by bisphenol A epoxy resin E44, E51 and a certain amount of auxiliary agent, the component B is prepared by mixing a T31-3 type modified phenolic amine curing agent and a NP440 amidoamines curing agent according to a certain proportion, and the component C is an aggregate by mixing cement and quartz sand according to a certain proportion. The preparation method comprises the following steps: heating the component A to the temperature of 30-50 DEG C, stirring to homogeneous phase, then mixing the component A and the component B according to a certain proportion, uniformly mixing, adding the component C according to a certain proportion, and uniformly blending to obtain the epoxy mortar. The preparation method has simple technology, the epoxy mortar has strong cohesiveness, the epoxy mortar through solidification has excellent anti-compression, anti-punching and anti-seawater corrosion performances, and the epoxy mortar can be used for repairing and reinforcing a concrete coating on the sea oil gas pipeline and a thin layer of an underwater concrete structure.

A method for manufacturing an extra-thick steel plate, belonging to the technical field of sheet metal manufacturing technology, is used to manufacture extra-thick steel plates with a thickness of more than 100mm. The surface of the base material and composite material to be compounded is processed flat and smooth, and then sprinkled with magnesium powder with a particle size of 1250 mesh, stacked symmetrically, and welded to obtain a composite billet. The composite billet is heated in a furnace and rolled. In the hot rolling process In order to realize the metallurgical bonding between the base material and the composite material interface, the extra-thick steel plate with excellent performance can be obtained. The present invention improves the current technical means for producing extra-thick steel plates, greatly reduces the technical difficulty of making extra-thick steel plates, significantly reduces production costs, can greatly increase the output of extra-thick steel plates, and has the advantages of simple process, High efficiency, less investment, low cost, good internal product quality and so on.

The invention relates to a molding process of FRP-reinforced polymer high-pressure pipelines. The molding process uses FRP pipes as inner molds and cooperates with outer molds to form a pouring space for polymer concrete. After molding, the outer molds are removed to obtain glass-steel-reinforced polymerization For high-pressure pipelines, the molding process goes through three steps: external mold pretreatment, pouring structure construction, and pouring molding. The FRP reinforced polymer high-pressure pipelines are made of inner lining, FRP pipe, skeleton net and reinforcement from inside to outside. The polymer concrete layer, bonding reinforcement layer, fabric resin layer and gel coat resin layer of the net, the formed pipe not only has a good anti-corrosion effect on the surface, but also has a high hoop tensile strength and can withstand high water pressure. During use, it is not easy to crack, breakage and other damage phenomena, and the maintenance cost in the later period is low, which can save a lot of manpower and material resources.