32results about How to "Good impact and wear resistance" patented technology

The invention discloses humidity and ultraviolet dual-cured polyurethane woodware coating and a preparation method thereof. A synthesis method includes synthesizing initial polyurethane polymer I, polyurethane pre-polymer II, polyurethane pre-polymer III, polyurethane acrylate oligomer and ultraviolet cured woodware coating. The humidity and ultraviolet dual-cured polyurethane woodware coating is mainly prepared by aliphatic diisocyanate, dihydric alcohol pre-polymer, polyhydroxy acid, epoxy resin and hydroxy acrylic ester and the like, and by adding auxiliaries such as photoinitiators, flatting agents, defoamers, substrate wetting agents and catalysts, the ultraviolet cured woodware coating is prepared. The ultraviolet cured woodware coating can form films and be cured under irradiation of ultraviolet, also can be cured by humidity in the air within 5 hours at the room temperature, and has the advantages of high solid, NCO (isocyanate) group content and adhesion force, fine resistance to chemical corrosion, high film coating hardness and fine storage stability and the like, can be used for irregular coating surfaces, hone finished UV (ultraviolet) paint and UV colored paint and the like where cannot be irradiated by the ultraviolet.

A metal ceramic anticorrosive paint mainly includes kaolin, nanometer aluminium powder, nano alumina, silicon carbide, nano quartz powder, ceramic powder, asbestos powder, graphite powder, a pigment, a filler, epoxy resin, an additive and a mixed organic solvent. The solid powders are subjected to nano ultrafine treatment to reach a granularity of 20-200 nm. The paint provided by the invention is a single-component paint, which is simple in manufacturing process, economical and environment-friendly. The coating of the paint does not require a primer and can be used alone without adding special finish. The coating has excellent wear resistance, corrosion resistance, impact resistance, stability, strong adhesion, compactness and stability, and can effectively prevent erosion by acid, alkali, salt and seawater. In addition, the paint can be widely applied to oil pipeline, oil storage tank, chemical equipment, ships, bridges, offshore platforms and other steel structure buildings.

The invention provides an impact-resistant and anti-wear agent for hydraulic concrete, which mainly comprises a nano material, slag, latex powder, rubber powder, a water reducing agent, fibers, an exciting agent and a defoaming agent. The impact-resistant anti-wear agent is suitable for places such as water conservancy projects, roads and airport pavements requiring high impact-resistant and anti-wear concrete, has the functions of resisting crack, reducing water, reinforcing and reducing elasticity, and excellent mixing and constructing properties. The impact-resistant and anti-wear agent has the advantages of increasing concrete impact-resistant and anti-wear properties, prolonging maintenance period and reducing maintenance cost.

The invention discloses a debris-flow drainage canal with energy dissipation and drainage functions and an application of the debris-flow drainage canal with energy dissipation and drainage functions. The drainage canal comprises a fully-lining drainage canal bottom plate and drainage canal side walls on two sides of the drainage canal bottom plate; the drainage canal bottom plate is in the shape of continuously-connected multiple-stage steps, the steps are provided with grooves; the width of the grooves on the top surfaces of the steps increases gradually along the flow direction of the debris flow, and the width of the grooves on the vertical surfaces of the steps decreases gradually; and the maximum width of the grooves on the top surfaces of the steps coincide with the maximum width B on the vertical surfaces of the steps. Compared wit the prior art, the step shape design is adopted to dissipate the energy of the debris flow all the way and the groove design is adopted to drain the debris flow, so the debris-flow drainage canal disclosed by the invention has high efficiency and good drainage capacity. By adjusting the height and the length of the steps and the size and the shape of grooves, the debris-flow drainagedrainage canal can be used for preventing the debris flow with any gradient and any nature.

The invention provides concrete thin-layer repairing polymer mortar and a preparation method thereof and relates to the field of mortar. The concrete thin-layer repairing polymer mortar is prepared from the following raw materials in weight ratio: two-component slow reaction type polyurea waterproof coating and a sand material, wherein the weight ratio of the two-component slow reaction type polyurea waterproof coating to the sand material is 1:(1-3). By utilizing the concrete thin-layer repairing polymer mortar, the problem that polymer mortar in the prior art cannot well repair a concrete building component can be solved, and the concrete thin-layer repairing polymer mortar has the advantages of good bonding performance, corrosion resistance and scour and wear resistance.

The invention discloses a high-strength concrete cementitious composition and high-strength concrete thereof. The cementitious composition is formed by mixing water with a cementitious material, wherein the weight ratio of water to the cementitious material is 0.23-0.25; the cementitious material is formed by mixing the following materials in parts by weight: 52.5 parts of common silicate, 445-525 parts of cement, 0-125 parts of coal ash and 30-65 parts of silica fume; the high-strength concrete is formed by mixing the following materials in parts by weight: 720-805 parts of said cementitious composition, 565-660 parts of manufactured sand, 910-1030 parts of rocklets, 4.7-10.0 parts of a super-plasticizing enhancer and 0-1.3 parts of a retarder. According to the high-strength concrete cementitious composition and the high-strength concrete thereof disclosed by the invention, silicate cement, high-quality silicon powder, high-quality coal ash, the high-performance super-plasticizing enhancer and the high-quality retarder are used, coarse and fine aggregates and water are properly cooled, and the prepared concrete has a good construction performance, a higher compressive strength, a low fluidity loss, a higher strength, and a better erosion and abrasion resistance.

The invention provides a damaged concrete pavement panel reinforcing structure and method. The structure comprises a concrete pavement panel, the concrete pavement panel is provided with a reinforcing groove, a plurality of pairs of horizontal steel bar embedding holes are formed in the two walls of the reinforcing groove, and horizontal steel bars are fixedly arranged in the horizontal steel bar embedding holes; a steel fiber reinforced concrete blanket is fixedly poured over the concrete pavement panel. The method comprises the steps of 1, conducting surface debristling; 2, making the reinforcing groove and drilling the plurality of pairs of horizontal steel bar embedding holes; 3, embedding the horizontal steel bars; 4, pouring steel fiber reinforced concrete to form the steel fiber reinforced concrete blanket. By combining the horizontal steel bars with steel fiber reinforced concrete, new cement concrete and old cement concrete cooperation work performance is improved, the bearing capacity of the concrete pavement panel reinforcing area is improved, and the service life and maintenance cycle of a road are prolonged.

The invention provides a reinforcing structure and method for a damaged concrete pavement panel. The reinforcing structure for the damaged concrete pavement panel comprises the concrete pavement panel with the planed surface, a reinforcing groove, multiple pairs of horizontal rebar embedding holes, and vertical rebar embedding holes. The horizontal rib embedding holes are formed in the two groove walls of the reinforcing groove, and the vertical rib embedding holes are formed in the concrete pavement panel. Horizontal rebars are fixedly arranged in the horizontal rebar embedding holes, vertical rebars are fixedly arranged in the vertical rebar embedding holes, and a steel fiber reinforced concrete cover is poured and fixed to the concrete pavement panel. The reinforcing method for the damaged concrete pavement panel includes the following steps that 1, surface planing is conducted; 2, the reinforcing groove is formed, and the multiple pairs of horizontal rebar embedding holes and the multiple pairs of vertical rebar embedding holes are drilled; 3, construction glue is poured, and the horizontal rebars and the vertical rebars are embedded; 4, steel fiber reinforced concrete is poured to form the steel fiber reinforced concrete cover. The bearing capacity of the concrete pavement panel is increased, the service life and the maintenance period of a road are prolonged, and the long-term use cost is reduced.

The invention provides a high-toughness impact-resistant and wear-resistant repairing material which is mainly prepared from 26.0 to 36.0 percent of portland cement, 5.0 to 7.5 percent of ultrafine powder, 52.0 to 61.0 percent of iron ore, 1.5 to 4.0 percent of fiber, 0.01 to 0.03 percent of a coupling agent, 0.1 to 0.3 percent of rubber powder, 0.8 to 1.2 percent of a volume stabilizer, 0.1 to 0.2 percent of a polycarboxylate water reducing agent, 0.01 to 0.03 percent of a defoaming agent and the like. The high-toughness impact-resistant and wear-resistant repairing material provided by the invention has the advantages of low price, convenient construction, high impact toughness, high impact strength, high bonding strength, low shrinkage and high crack resistance, has a linear expansion coefficient close to that of concrete, cannot fall off from a base material, and can replace organic materials such as epoxy resin mortar and the like.

The invention provides environment-friendly high-durability epoxy mortar, and belongs to the technical field of building materials. The environment-friendly high-durability epoxy mortar is composed ofa component A and a component B. The component A comprises at least one of graded sandstone and cement, epoxy resin, a carbonyl compound, a glycidyl ether compound and an interface agent, and the component B comprises an amine curing agent, a curing accelerator and a humid environment functional curing agent. According to the mortar disclosed by the invention, the carbonyl compound and the glycidyl ether compound are compounded as a diluent, so that the hardness, the flexibility, the adhesive force, the durability and the dilutability of a mortar layer can be synergistically improved, the shrinkage rate and the cost of the mortar layer are reduced, and environmental protection and safety are facilitated; by adding the humid environment functional curing agent, smooth curing in a humid environment can still be ensured, and the construction applicability is higher.

The invention discloses an anti-impact and wear-resistant concrete construction method for a bottom plate of a hydraulic tunnel. By controlling raw materials in the construction process, excavating and supporting cavities, treating a foundation surface, optimizing a concrete mix proportion, controlling the construction quality of each working procedure on site, performing seepage prevention and cracking limitation of concrete, controlling the temperature, protecting a finished product and controlling on-site construction organization, the anti-impact and wear-resistant performance of high-flow-speed bottom plate concrete of the hydraulic tunnel is improved, and the engineering durability and the operation safety are improved. Through the measures, the anti-impact and wear-resistant performance of the concrete can be improved, the subsequent operation and maintenance work is reduced, the cost is effectively controlled, and the tunnel operation safety is guaranteed.

The invention discloses impact-resistant and wear-resistant concrete for a water conservancy project. The impact-resistant and wear-resistant concrete is prepared from the following raw materials in parts by weight: 73-81 parts of Portland cement, 41-49 parts of yellow phosphorus slag, 20-30 parts of ardealite powder, 5-10 parts of basophilic bacillus licheniformis, 15-22 parts of brown aluminum oxide, 0.1-0.3 part of polypropylene split film fibers, 3-6 parts of a water reducing agent and 113-129 parts of gravel. The preparation method comprises the following steps: grinding the Portland cement, the yellow phosphorus slag, the brown aluminum oxide and the sandstone to obtain ground powder A; grinding the ground powder A, ardealite powder and polypropylene split film fibers again to obtain ground powder B; calcining the ground powder B at the temperature of 610-630 DEG C to obtain calcined powder; and cooling the calcined powder to normal temperature, doping the basophilic bacillus licheniformis and the water reducing agent, and uniformly stirring. The concrete prepared by the invention is impact-resistant, wear-resistant and long in service life.