33results about How to "Excellent resistance to chloride ion penetration" patented technology

The invention discloses a high-permeability liquid rubber spray coating, and relates to the technical field of spray coatings. The high-permeability liquid rubber spray coating comprises a component A and a component B, wherein the component A is anionic liquid rubber asphalt emulsion; the component B is a coagulant solution; the component A has the solid content of liquid rubber asphalt emulsion of 50-75 weight percent, and comprises the following components in percentage by mass: 1 to 35 percent of rubber emulsion, 10 to 50 percent of asphalt emulsion, 0.01 to 2 percent of anionic dispersing agent, 0.01 to 2 percent of anionic surfactant, 0.1 to 10 percent of fatty alcohol-polyoxyethylene ether, 0.1 to 10 percent of alkali resistant wetting agent OEP-70 and 0.1 to 10 percent of alkali resistant wetting agent AEP; and the component B is an aqueous solution at the concentration of 3-18 percent, which is prepared by mixing calcium chloride and composite aluminum-iron polymer in percentage by mass. The wetting agents are added into the spray coating, and the coating has high permeability and wider application range.

The invention relates to an ultrahigh-performance cement-based composite material. Particle gradation of a polynary gelling material and particle gradation of aggregates are optimized, and a water reducer and other additives are used, so the compressive strength under 28d standard curing reaches 170MPa or above on the premise that concrete has good fluidity. The material has the following technical advantages: construction fluidity requirements are met under a low water-binder ratio; under standard curing conditions, the strength of the concrete in 7d age reaches 120MPa or above, and the strength of the concrete in 28d age reaches 170MPa or above; compared with RPC which only can be used to produce prefabricated parts, the composite material can be stirred and constructed in any occasions without hot curing or pressure forming; the impermeability, the carbonization resistance, the chloride ion penetration resistance and the freeze thaw cycle resistance of the composite material are better than those of common concrete; and the composite material can be used to produce member products with the cross section being 50% (or more) than the common concrete member products.

The invention relates to an ultra-high performance cement-based impact wear resistant material. By optimizing the grain gradation of a multi-element cementing material and the grain gradation of an aggregate, and using a water reducing agent and other chemical admixtures, the material provided by the invention can be employed to perform surface coating on a newly constructed concrete structure or an impact wear damaged old concrete structure, and the impact wear resistance of a hydraulic structure can be improved by means of the high impact wear resistance of the material itself and the good adhesion of a concrete substrate. The material has the technical advantages that: the impact wear resistance is significantly superior to that of ordinary concrete; the weatherability and durability are significantly superior to those of an organic impact wear resistant coating material; by optimizing the grain gradation of the cementing material and the grain gradation of the aggregate, the material can meet the construction liquidity requirements under a low water-binder ratio; under standard curing conditions, the material can reach high strength of more than 150MPa after 28 days; and the anti-permeability, carbonization resistance, chloride ion penetration resistance, freezing-thawing cycle resistance and other properties are superior to those of ordinary concrete.

The present invention relates to a light weight and high strength cement base composite material. According to the present invention, particle size distribution of a multi-component cementing material and particle size distribution of an aggregate are optimized, and a reducing agent, a thickener and other chemical admixtures are used to make the material can concurrently achieve bulk density of significantly lower than bulk density of the ordinary concrete and a compressive strength of more than 20 MPa; the technical advantages of the material comprise that: in the case of the bulk density of less than or equal to 1650 kg/m<3>, the 28 d standard maintenance compressive strength of more than or equal to 20 MPa is achieved, and the construction fluidity requirements can be met in the case of the low water-binder ratio by optimizing the particle size distribution of the cementing material and the particle size distribution of the aggregate; and the hardened material has characteristics of compact surface, excellent impermeability, excellent carbonization resistance, chloride ion erosion resistance, and other durable performances.

The invention discloses a high-durability damping concrete and a preparation method thereof, and relates to several concretes and a preparation method thereof. The invention solves the problems of low damping capability and poor durability of the conventional concrete structure material per se. The high-durability damping concrete is prepared by stirring and mixing cements, rubber powder, water, medium sand, stones, and adding fibers and silicon powder. In the invention, c the loss factors of the high-durability damping concrete are improved by about 80-200 percent compared with that of pain concrete under the condition of different frequencies. After maintenance for 28 days, the concrete prepared by using the method has chloridion-resistant permeability and carbonizing-resistant capability both superior to that of blank concretes.

The invention relates to an ultrahigh-performance cement-based abrasion-resistant material, which has the features that the material can be used for performing surface coating on a newly built concrete structure or an old concrete structure damaged due to erosion and abrasion by means of optimizing the grain composition of multi-component cementing materials and the grain composition of aggregates and utilizing the chemical admixtures, such as a water reducing agent and the like, and the scour and wear resistance of a hydraulic structure is improved through the high scour and wear resistance of the material itself and the excellent bonding of concrete base materials. The technical advantages of the material include that scour and wear resistance of the material is significantly better than that of ordinary concrete; weather resistance and durability of the material are significantly better than those of organic scour and wear-resistant coating materials; a low water-binder ratio is obtained by means of optimizing the grain composition of the cementing materials and the grain composition of the aggregates, so that the requirements on construction mobility are satisfied; under the condition of standard maintenance, the material reaches the high strength of above 150 MPa during the concrete age of 28 days; the impervious performance, carbonation resistance, chloride-ion penetration resistance as well as freezing-thawing cycle resistance and the like of the material are better than those of the ordinary concrete.

The invention discloses an underwater-curing long-acting anticorrosive coating for marine steel structures, and a preparation method thereof. The coating comprises a component A and a component B according to a weight ratio of 1.5:1 to 3:1; the component A comprises, by weight, 20-50 parts of phenolic modified epoxy resin, 3-8 parts of an active diluent, 25-55 parts of a filler, 0.2-1 part of a thixotropic agent, 0.3-1 part of a wetting dispersant, 0.3-0.8 part of an antifoaming agent and 0.3-1 part of a coupling agent; and the component B comprises, by weight, 20-70 parts of a curing agent Iand 30-80 parts of a curing agent II. A paint film produced by using the coating can be fast cured in a wet and even water environment, contains no solvents, has no pollution to the environment, and has good application properties. The coating has the advantages of excellent water curing and underwater curing performances, excellent corrosion resistance, excellent chloride ion permeation resistance, excellent adhesion, and excellent impact resistance.

The invention relates to an ultrahigh-performance cement-based H-shaped profile poured by using an ultrahigh performance cement-based composite material. The cement-based H-shaped profile satisfies the requirement that H/B is equal to 0.8-3, t1/B is equal to 0.03-0.2, t2/H is equal to 0.03-0.2, R1/B equal to 0.05-0.5, R2/t2 is equal to 0.1-0.5 and R3/R2 is smaller than or equal to 1. According to the ultrahigh-performance cement-based composite material, the grain composition of a multi-element cementing material and the grain composition of aggregates are optimized, and chemical additives are added, so that the compressive strength of concrete reaches over 170MPa under 28d of standard curing on the premise of good flowability. Through technologies such as fibers, and reinforcement, the cement-based profile obtains the material member performance similar to profile steel and is applied to structures of beams, columns, piles and the like of assembled buildings, and the buildings have light weight and construction speed similar to steel structures and have anticorrosive and fireproof performance higher than steel structure profiles.

The invention relates to an ultra-high performance cement based groove type profile cast from an ultra-high performance cement based composite material. The cement based groove type profile meets the conditions of: H/B=0.8-3; D/B=0.1-0.5; t/H=0.05-0.5; R/B=0.05-0.5; and R1/t=0.1-0.5. By optimizing the grain gradation of a multi-element cementing material and the grain gradation of an aggregate, and using a water reducing agent and other chemical additives, under the premise that concrete has good flowability, the ultra-high performance cement based composite material involved in the invention can reach compressive strength of over 170MPa under 28d standard curing. By means of fiber reinforced reinforcement and other technologies, the ultra-high performance cement based composite material enables the ultra-high performance cement based profile to acquire material component properties similar to those of section steel. By applying the profile provided by the invention to beams, columns, piles and other structures of prefabricated buildings, the buildings can have a construction speed similar to that of a steel structure, but can have higher corrosion resistance and fire resistance than steel structure profiles.

The invention discloses a polymer cement waterproof coating with high corrosion resistance and a preparation method thereof. The high-corrosion-resistance polymer cement waterproof coating comprises the following raw materials: cement, quartz sand, a coupling agent, a defoaming agent, a water reducing agent, a dispersing agent, a pigment and a polymer emulsion. The polymer cement waterproof coating prepared by the invention is excellent in acid and alkali resistance, sulfate resistance and seawater corrosion resistance and high in bonding strength with a concrete base material, and still has high bonding strength after being corroded by acid, alkali and salt; the polymer cement waterproof coating prepared by the invention has excellent chloride ion permeability resistance, high density andlow water absorption rate; the polymer cement waterproof coating prepared by the invention can be constructed by using a blade coating, picture brushing or roll coating method, is easy to operate andpopularize, can be directly constructed on a humid basal plane, and is relatively low in cost.

The invention discloses a high-strength high-durability modified concrete structure repairing material. The repairing material is prepared from, by mass, 10-11% of cement, 6-7% of sand, 21-38% of coarse aggregate, 16-20% of modifier, 5-7% of silica fume and 34-38% of water. By adding the modifier and silica fume, the strength and durability of concrete are improved. Compared with traditional concrete materials, the repairing material has the advantages that working performance is high, strength is high, interface bonding performance is high, price is low, durability is high, and the repairing material can be widely applied to repair work of water conservancy projects and various industrial and civil buildings.

The invention relates to the field of concrete, and particularly discloses mass concrete as well as a preparation method and application thereof. The mass concrete is prepared from the following raw materials in parts by weight: 340-355 parts of cement; 40 to 45 parts of fly ash; 100 to 110 parts of mineral powder; 680 to 720 parts of fine aggregate; 1080 to 1100 parts of coarse aggregate; 7-9 parts of a water reducing agent; and 135 to 145 parts of water. The preparation method comprises the following steps: weighing the cement, the fly ash, the mineral powder, the fine aggregate and the coarse aggregate in proportion, and uniformly mixing and stirring to obtain a first mixture; and weighing the water reducing agent and the water according to the proportion, adding the weighed water reducing agent into the water, uniformly mixing, adding the water doped with the water reducing agent into the first mixture, and uniformly stirring to obtain the mass concrete. The mass concrete has the advantages that the crack generation probability is reduced, and the crack generation amount is reduced.

The invention provides a non-bearing type light thin-wall damping partition wall which comprises a wall board formed by an ultrahigh toughness cement-based composite material; the mortar matrix of the ultrahigh toughness cement-based composite material comprises cement, water, fine aggregate, pulverized fuel ash, silica fume, granulated blast-furnace slag and metakaolin, and the mass ratio among the components of the mortar matrix is 1: (0.27-2.2): (0-3): (0-6.9): (0-0.3): (0-0.55): (0-0.4), wherein the maximum particle size of the fine aggregate is not larger than 0.55mm, and the weights of the pulverized fuel ash, the silica fume, the granulated blast-furnace slag and the metakaolin are not equal to 0 at the same time; furthermore, chopped fiber is added into the mortar matrix, and volume dosage of the chopped fiber is 1-3% of that of the wall board; and the slump cone expansion diameter range of the mortar matrix with the chopped fiber is 60-70mm. The non-bearing type light thin-wall damping partition wall effectively replaces the traditional wall board material, and has the advantages of being high in strength, thin in thickness, fire-resistant, impervious, good in durability, low in thermal conductivity, low-carbon, energy-saving and the like.

The invention provides an ultra-high-performance concrete for use in a high-cold area and a preparation method thereof. The ultra-high-performance concrete comprises the following raw materials in parts by weight: 450-650 parts of Portland cement, 200-450 parts of high aluminate cement, 50-100 parts of silica fume, 5-50 parts of nano-silica, 1000-1300 parts of sand, 35-200 parts of steel fiber, 20-45 parts of water reducer, 2-10 parts of antifreezing agent, 0.2-2.0 parts of early strength agent, and 180-210 parts of water. Compared with the prior art, the ultra-high-performance concrete for use in a high-cold area provided in the invention can be used for construction in a high-cold area at -20 DEG C, and can gain strength rapidly. Moreover, the concrete is high in compactness, and has excellent anti-chlorine ion permeation performance and excellent mechanical properties.

The invention relates to an ultra-high performance cement-based groove type profile poured by an ultra-high performance cement-based composite material. The cement-based groove type profile meets H/B=0.8-3, D/B=0.1-0.5, t/H=0.05-0.5, R/B=0.05-0.5 and R1/t=0.1-0.5. According to the ultra-high performance cement-based composite material, by optimizing the grain composition of multi-element cementing materials and the grain composition of aggregates and using a water reducing agent and other chemical additives, the compressive strength of the concrete reaches 70 MPa or above under 28 d standard curing on the premise that the concrete has the good fluidity; the ultra-high performance cement-based profile obtains the material component performance similar to that of profile steel through the fiber reinforcement and other technologies, the ultra-high performance cement-based profile is applied to the beam, column, pile and other structures of a prefabricated building, and therefore the building has the building speed similar to that of a steel structure, but has the corrosion and fire resistance higher than that of the steel structure profile.

The invention relates to a composition used as a concrete maintenance assistant. The composition comprises, by weight, 100 parts of trihexadecenoin, 0.01-0.05 parts of 1-butylsulfonic acid-3-methylimidazolium tetrafluoroborate, 0.01-0.05 parts of N-butyl-N-methylpiperidine bis(trifluoromethanesulfonyl)imide salt, 1-5 parts of disodium laureth (1~4) sulfosuccinate and 1000 parts of tetrahydrofuran.