34results about How to "Improve repair strength" patented technology

The invention discloses a concrete repair material, which is composed of the following raw materials in percentage by weight: 30-35 parts of sulphoaluminate cement, 8-10 parts of quartz sand, 6-8 parts of river sand, epoxy-polyurethane composite material 20-25 parts, 2-4 parts of exothermic material, 2-3 parts of heat-changing material, 2-3 parts of water reducing agent, 0.5-0.6 parts of anionic surfactant, 1-2 parts of retarder. After the initial cracks are added, the thermally variable material will leave enough space to allow other polymer materials and base materials to flow into the gaps after being heated and shrink, so that more base materials and polymers can be accommodated in the gaps, and when the heat dissipates Afterwards, the thermally variable material expands, allowing the base material and polymer to fully fill the crack and achieve high repair strength.

The invention discloses a method for repairing concrete after a fire. The damaged concrete is repaired through a PCM by determining PCM repair parameters of the to-be-repaired damaged concrete, wherein the PCM can penetrate into pores of the concrete and thus can fuse with the damaged concrete, and therefore, when the PCM is utilized to repair the concrete after the fire, the durability and repairstrength of the PCM are higher than those in the prior art; and secondly, when the PCM is utilized to repair the damaged concrete, the requirement for the levelness of the damaged concrete is avoided, and thus the repair limitation of the PCM is small. In addition, the invention further discloses a device for repairing the concrete after the fire, and a storage medium, and the effects are achieved.

The invention relates to a tool for repairing a composite laminated sheet structural member. The tool for repairing the composite laminated sheet structural member comprises a pair of male grinding wheel and a female grinding wheel which have the same overall dimension and are matched with each other, wherein the male grinding wheel consists of a cam body and a convex surface diamond particle plated layer; a cylindrical boss and three first elongated slots are formed on an outer convex surface cone of the cam body; the three first elongated slots are distributed radially and uniformly; the female grinding wheel consists of a concave wheel body and a concave surface diamond particle plated layer; a second central bottom hole and three second elongated slots are formed on an inner concave surface cone of the concave wheel body; the three second elongated slots are distributed radially and uniformly; and the outer diameter of the cylindrical boss of the male grinding wheel is equal to the inner diameter of the second central bottom hole of the female grinding wheel. A repairing method comprises the following steps of: processing inner concave surface conical holes in the damaged holes, needing to be repaired, of the male grinding wheel which is arranged into an electric drill; cutting outer convex surface conical solidified patches by using the female grinding wheel which is arranged into the electric drill; placing the outer convex surface conical solidified patches on the inner concave surface conical holes which are covered by glue films; and heating, pressurizing and solidifying an assembled glue-jointed composite member. In the tool and the method, the traditional hand grinding mode is replaced by a machining mode, so the grinding quality and the work efficiency are improved and labor intensity is reduced.

The invention discloses a corrosion-resistant aluminum alloy profile, which belongs to the technical field of metal material manufacturing. A corrosion-resistant aluminum alloy profile can improve the raw materials of the aluminum alloy matrix on the one hand, and optimize the ratio and combination of different components. , enhance the strength and corrosion resistance of the aluminum alloy matrix as a whole, and further protect the aluminum alloy matrix by covering the surface of the aluminum alloy matrix with a nano-ceramic coating. The embedded repair rod can improve the strength of the aluminum alloy matrix and eliminate part of the internal stress, and when the nano-ceramic coating is corroded or damaged, the repair action of the embedded repair rod is triggered by the set easy-to-corrosion parts, based on the magnetic attraction. The repair magnetic ball is actively adsorbed to the corrosion or damage to repair, avoid further corrosion or damage, and is suitable for self-repair under various corrosion conditions, effectively improving the corrosion resistance of the aluminum alloy substrate and prolonging its service life.

The embodiment of the invention discloses a data repairing method and adevice. The method comprises the following steps: firstly, acquiring a first abnormal data vector set with at least one abnormaldata; further acquiring a set of z first reference data vectors having vectors of the same type as the set of first abnormal data vectors; then determining an abnormal data bit corresponding to each abnormal data in the first abnormal data vector set; repairing the first set of abnormal data vectors based on the z sets of first reference data vectors according to the determined abnormal data bits.