70results about How to "Fast growth in strength" patented technology

The invention discloses silicate-based light-weight foam concrete and a preparation method thereof. The silicate-based light-weight foam concrete is prepared from silicate cement, an inorganic admixture, water, a foaming agent and an additive, wherein the mass ratio of the inorganic admixture to the silicate cement is 0.3 to 1.3; the water accounts for 35 to 65 percent by mass; and the foaming agent accounts for 3 to 10 percent by mass. The silicate-based light-weight foam concrete has the beneficial effects that the silicate cement is used as a cementing material; and compared with a sulfoaluminate-based material, the silicate-based light-weight foam concrete has the advantages that the carbonation resistance, the mechanical performance stability, the temperature tolerance and other properties are improved. By adjustment of the contents of all functional components (a thickening time control agent, a foam stabilizer, a water reducing agent, an anti-cracking component, an expanding agent and the like), the silicate-based light-weight foam concrete can conform to various preparation conditions of the silicate cement used as a base material.

The invention provides a spray-coating sealing material for coal rock mass, belonging to the technical field of organic/inorganic compound materials. The spray-coating sealing material for the coal rock mass is a complex of high-molecular emulsion and high-flame-retardant powder materials, without any toxic and harmful substances, free of springback for construction, safe and environmental protective. When sprayed at vertical surfaces and top surfaces, the material does not flow and sag, and is good in overall effect. After curing, the coating has advantages of strong adhesion stress, high tensile strength, large tensile deformation, and excellent sealing performance. The material can be used for surface protection of the coal rock mass, air leakage prevention, gas leakage prevention, and rapid surface protection and moistureproof treatment after tunneling of swelling rock.

The invention discloses a repair material for bituminous pavement pot holes and a method for preparing the same, wherein the material is prepared by mixing and stirring the following raw materials according to parts by weight: 100 parts of dry powder, 10-20 parts of emulsified asphalt, 5-10 parts of water and 0.1-0.5 part of water reducer. The method for preparing the material comprises the steps of putting the dry powder, the water reducer and water in a stirring machine and stirring at a speed of 200 r/min for 60 s at first, and then adding the emulsified asphalt thereto and stirring at the speed of 200 r/min for 30 s, and finally, stirring at a speed of 400 r/min for 180 s, thereby obtaining the repair material for the bituminous pavement pot holes. The repair material for bituminous pavement pot holes provided by the invention is convenient for storage and does not need to be heated in use, and further is capable of quickly repairing the damaged bituminous pavement pot holes at different temperatures and under the wet conditions; as a result, the repair material can be selected for repairing when the traffic flow is small, so that the normal traffic capacity of the road cannot be affected.

A quickly-solidified tile adhesive comprises the raw materials in parts by weight: 20-40 parts of quick-hardening cement, 40-50 parts of quartz sand, 10-20 parts of fly ash, 10-20 parts of calcium carbonate, 2-4 parts of redispersible latex powder, 0.2-0.5 part of cellulose ether, 0.1-0.3 part of starch ether, 0.2-0.5 part of water repellent, 0.1-0.4 part of retarder and 1-5 parts of early strength agent. The quick-hardening cement, the quartz sand and the fly ash are used as raw materials to prepare the quickly-solidified tile adhesive, the adhesive is short and adjustable in initial setting time, the strength growth is fast, the fixed waste fly ash generated by thermal power plants is effectively utilized, the adhesive also contains organic high-molecular polymer capable of being compounded with the ceramic tile and the indoor environment pollution cannot be caused.

The invention relates to road delayed-coagulation cement and a preparation method thereof. The road delayed-coagulation cement comprises special cement clinker, limestone waste, modified steel slag powder and phosphorus gypsum. According to the road delayed-coagulation cement, a cement raw material is prepared from carbon-containing shale, the phosphorus gypsum serves as mineralizing agents of clinker calcination, steel slag powder is prepared in a crushing, iron removing and grinding manner, the steel slag powder and the limestone waste serve as cement admixtures, and the phosphorus gypsum serves as a cement delayed coagulant. By the aid of the technical scheme, the prepared road delayed-coagulation cement has the advantages that coagulation time is suitable, early strength is high, laterstrength is rapidly increased, breaking strength is high, abrasion resistance is good, dry shrinkage performance is low and the like. Efficient resource utilization of solid waste such as the carbon-containing shale, the limestone waste, steel slag and the phosphorus gypsum is achieved, and the road delayed-coagulation cement has important economic benefits and social benefits.

The invention provides a large-sized filling bag embanking method and equipment for filling an embankment by using dredged soil. The method comprises the following steps: (1) designing the depths and the distances of soft soil foundation plastic water drainage plates under the embankment, finishing the construction of the water drainage plates, and mounting monitoring facilities in the soft soil foundation; (2) finishing one layer construction of a sand quilt layer and a soft soil row; (3) processing large-sized filling bags for future use for by using polyester woven fabric; (4) mounting dredged soil filling equipment; (5) mounting an evacuating device; (6) laying an evacuating water drainage pipe network; (7) laying the filling bags and carrying out filling construction; (8) mounting an embankment surface sealing system; (9) opening an evacuating system to accelerate drainage consolidation of a dredged soil filling body and simultaneously developing relevant monitoring and detecting works; and (10) finishing an open sea side protective surface structure and an inland sea side protective slope structure in time by using the full embankment body rising process so as to reinforce the protection of the embankment body. The equipment used by the method provided by the invention is filling equipment for the dredger fill filling bags. According to the invention, the embankment building cost is reduced, the environment is protected, the stability of the embankment is guaranteed, and the clay particle content of the filling body is 10%.

The invention discloses super early-strength mortar. The key point of the technical scheme is that the super early-strength mortar is prepared from the following components in percentage by weight: 40-50% of an inorganic bond material, 1-3% of an enhancer, 45-55% of aggregates, 0.3-1.5% of an early-strength agent, 0.05-0.4% of a retarder, 0.1-0.5% of a water reducer and 0.03-0.15% of anti-cracking fibers. The invention provides the super early-strength mortar which does not bleed or shrink and is high in liquidity; in addition, the 1h compressive strength can reach 30MPa and the long-term strength is not decreased.

The invention discloses highly anti-bending and wearing-resistant lightweight concrete, which comprises the following raw material constituents in parts by weight: 200-250 parts of cement, 100-150 parts of coal ash, 150-200 parts of river sand, 100-180 parts of manganese residue, 150-200 parts of ceramsite, 20-50 parts of silicon carbide, 15-35 parts of plant fiber, 200-250 parts of water, 0.3-1.5 parts of dipropyl ethylene glycol monobutyl ether, 3-6 parts of silicon resin polyether emulsion, 0.3-1.8 parts of sodium chloride, 2-5 parts of triethanolamine, 0.3-1 part of sodium sulfate, 1-3 parts of epoxy resin, 1-3.5 parts of waste polyurethane, 1-2.3 parts of sodium stearate, 5-16 parts of nano calcium oxide, 0.3-0.9 part of coagulant, 2-5 parts of melamine water reducer and 5-18 parts of foaming agent. The highly anti-bending and wearing-resistant lightweight concrete provided by the invention has high anti-bending strength, good wear resistance, light weight and excellent water resistance.

The invention provides an electrolytic manganese residue-based ointment filling material which comprises original electrolytic manganese residues, carbide slag and an electrolytic manganese residue cementing agent, wherein the electrolytic manganese residue cementing agent comprises ground electrolytic manganese residue powder, boiling furnace slag, cement kiln ash, phosphorus slag powder, petroleum coke desulfurized fly ash and additives. A preparation method of the material comprises the following steps: by taking the original electrolytic manganese residues as a basic raw material, adding the carbide slag and the electrolytic manganese residue cementing agent, rapidly stirring for 10-20 minutes, adding water till the water content of the filling material meets a provided value, and further stirring for 10-30 minutes, thereby obtaining the electrolytic manganese residue-based ointment filling material. Compared with a cement type mine filling material, the electrolytic manganese residue-based ointment filling material provided by the invention is good in filling mobility, relatively rapid in strength increase, good in slight swelling property and low in heavy metal leaching concentration.

The invention relates to a modified asphalt material for road rehabilitation and road construction, in particular to a pit interface repairing agent and a preparation method thereof. In the preparation method comprises, 65 parts by weight of asphalt is utilized as a main raw material; (2) modified solution prepared from 6.92-7.42 parts by weight of solvent oil, 2.5-3.0 by weight parts of a styrene-butadiene-styrene block copolymer, 0.05 part by weight of Na2SO3 and 0.03 part by weight of 1-aminoethyl-2-heptadecyl-imidazoline is utilized as a modifier; and (3) 25 parts by weight of kerosene as a diluent; and the preparation method comprises the following steps: mixing and stirring the components to obtain the pit interface repairing agent. The pit interface repairing agent provided by the invention is convenient in use and fast in strength growth; after the interface repairing agent is brushed, 95% of modified indexes can be reached within 1 hour at room temperature of 15 DEG C; and the repairing agent does not need to be heated on the site, and the repaired road surface is slightly different from the original road surface.

The invention provides a titanium-extracting slag lime stabilized crushed stone material and a preparation method thereof. The material is prepared from a binder, crushed stones, an admixture and water, wherein the mass ratio of the binder and the crushed stones is (20-40) to (50-70); the binder is prepared from the following components in percentage by mass: 50-70 percent of titanium-extracting slag, 4-16 percent of lime, 15-30 percent of steel slag powder and 0-20 percent of fly ash; the crushed stones include graded crushed stones or steel slag crushed stones; the admixture is 4-6 percent of the mass of the lime and includes one or more of gypsum, sodium carbonate, water glass, sodium sulfate and calcium formate; and the mass of the water is 4-18 percent of the total sum of the masses of the binder, the crushed stones and the admixture in a dry state. The preparation method can adopt the raw materials to perform preparation. The preparation method has the beneficial effects that thecost of the raw materials is low, and the cost is low; a great quantity of industrial waste slag including titanium-extracting slag can be utilized; the construction technology is simple and convenient; the material strength increases rapidly, the construction period can be shortened, and the engineering cost is lowered.

The invention provides a plugging agent for plugging oil-water well blast holes and casing pipe leakage parts in an oil field. The plugging agent comprises a plugging preparation and a retarder. The plugging preparation is hydraulic concrete powder prepared from 40-80 parts by weight of sulphoaluminate clinker or fluoroaluminate clinker, 5-20 parts by weight of anhydrite, 10-40 parts by weight of silica fume and 5-10 parts by weight of anhydrous sodium sulfate. The retarder is a retarder aqueous solution comprising 0.1-5 parts by weight of tartaric acid, 0.1-15 parts by weight of citric acid, 5-10 parts by weight of boric acid and 80-95 parts by weight of water.

A method for reinforcing the soft foundation by draining water and using powder-spraying piles includes such steps as positioning the powder-spraying piles in such manner that the piles are longitudinally arranged at intervals and transversely arranged to form equilateral triangles, positioning the drainage plates between two adjacent piles arranged longitudinally, positioning draining ditches inclined between two piles, digging the draining ditches, filling sand in them, inserting the drainage plates into ground, forming piles, and spreading broken stone and sand layer on the ground.

The invention relates to the field of construction engineering, and discloses a method for reinforcing a row-lock wall through steel strands and polymer mortar. The method includes the following steps: embedding oblique keys in bricks on flat as per the actual masonry method of the row-lock wall; fixing a steel strand net on the wall surface through the embedded oblique keys; and constructing a polymer mortar protective layer on the surface of the wall body. The method greatly improves the bearing capacity and resistance to vibration of the row-lock wall, and the testing result shows that the horizontal limit bearing capacity of the reinforced row-lock wall body is improved by more than 80% than that of an unreinforced wall body; and meanwhile, the intensity is greatly improved, the construction period is short, the construction technology is simple, templates do not need to be erected, and the method is particularly suitable for solving the problems of poor intensity and weak resistance to vibration of the masonry structure of the row-lock wall, as well as the problem of improving the cracking and ageing of the existing row-lock wall structure at the same time.

The invention discloses an asphalt pavement assembly type rapid repairing technology interlayer bonding material and a preparation method thereof. The preparation method comprises the following steps:blending bisphenol-A epoxy resin and nanometer SiO2 according to a certain proportion at 50 DEG C till a mixture is milky white and is free from powdery particles; sequentially adding modified aliphatic amine, polyamide, an amine curing agent, polysulfide rubber and a coupling agent according to a certain proportion at room temperature for mixing, stirring till group B materials are pale brown, and storing at room temperature and under a drying condition for 1.5 months; and mixing group A materials, the group B materials and a promoter in parts by mass according to a ratio of 100 to (30 to 35) to (5 to 7) to obtain the asphalt pavement assembly type rapid repairing technology interlayer bonding material. The asphalt pavement assembly type rapid repairing technology interlayer bonding material has the advantages of longer construction time, good fluidity, simple construction, quick increase in strength after spreading, good bonding performance with different pavement materials under awet interface condition, short traffic opening time, and controllable gelation time and curing rate.

The invention discloses a mortar specially used for fly ash steam-pressing brisk construction. The special mortar comprises following raw materials, by weight, 1350 to 1550kg of natural sand, 183 to 337kg of cement, 32 to 60kg of fly ash, 2.15 to 7.15kg of an additive specially used for the mortar which is specially used for fly ash steam-pressing brisk construction, and 215 to 250kg of water. The preparation method comprises following steps: (1) natural sand, cement, fly ash, the additive and water are uniformly mixed via mechanical mixing according to the weight ratio; and (2) the mortar obtained in step (1) is subjected to mechanical stirring for 3min. The preparation method is simple; water consumption of common masonry mortar is reduced; workability is improved; compactibility is increased; later phase strength increasing is rapid, and water penetration resistance, frost resistance and durability are all improved. The surfaces of fly ash steam-pressing bricks are smooth, and bonding of the fly ash steam-pressing bricks with mortar is difficult. A certain proportion of fly ash and the additive are added into the mortar, so that performances of the mortar are improved effectively, cost is reduced, and binding power of the mortar with the fly ash steam-pressing bricks is increased.

The invention discloses an epoxy-structure adhesive for prefabrication and splicing of a bridge segment. The epoxy-structure adhesive is prepared by mixing a component A and a component B, and duringconstruction, the components A and B are mixed according to the mixing ratio of 3:1, wherein the component A comprises bisphenol A epoxy resin, hydrogenated bisphenol A epoxy resin, novolac epoxy resin, a diluent, a flexibilizer, fumed silicon dioxide, silica powder, short fibers, a silane coupling agent, an ultraviolet light absorber and a defoaming agent, and the component B comprises phenolic-aldehyde-modified polyamide-amine, autocatalytic modified alicyclic amine, cardanol polyacetals amine and a high-activity silane coupling agent. According to the epoxy-structure adhesive, through compounding between the bisphenol A epoxy resin, the hydrogenated bisphenol A epoxy resin and the novolac epoxy resin and the diluent, the flexibilizer and the like, and addition of the short fibers, a filler and the like, the epoxy-structure adhesive has the advantages that the operable time is long, the strength increase is quick, and the adhesive can adapt to different operation environment temperatures, and has good resistance to damp-heat aging and long service life; the epoxy-structure adhesive is more suitable for being applied to prefabrication and splicing construction of the bridge segment.

The invention discloses an embedding material and method suitable for embedding an earth pressure cell. The embedding material comprises, by weight, 0.08-0.12 part of cement, 0.16-0.28 part of bentonite, 4.6-4.8 parts of fine sand and 1.5-1.6 parts of water, and the above raw materials are mixed evenly to prepare the embedding material. The method for embedding the soil pressure cell through the above embedding material includes the following steps that firstly, mud protection wall drilling is conducted on a site where the earth pressure cell needs to be embedded, and the calibrated earth pressure cell and a support are put into a drilled hole; then a grout outlet of a grout pouring pump is connected with a hard long pipe through a soft pipe, the hard long pipe is inserted in the drill hole, a lower pipe opening of the hard long pipe goes deep into the bottom of the drill hole, and low-concentration grout is used for replacing high-concentration grout; and then the grout outlet of thegrout pouring pump is connected to the hard long pipe through the soft pipe, the grout pouring pump is started, the embedding material begins to be injected, and the hard long pipe is gradually elevated in the embedding material injecting process till the drill hole is filled with the embedding material.

The invention provides a mortar additive, a mortar additive preparation method and a method for preparing mortar with the mortar additive.The mortar additive is composed of organic silicon type water repellents, redispersible latex powder, hydroxypropyl methyl cellulose ether, polycarboxylic type water reducer, modified starch ether, polypropylene fibers and fillers according to a weight ratio of 0.8-1.2:0.8-1.2:0.6-0.8:0.3-0.58:0.1-0.13:0.3-0.58:0.1-0.3.Compared with a common additive, the mortar additive has the advantages that reaction is quicker and more complete, strength increase is quicker and higher, abrasion resistance, durability, cracking resistance and seepage proofing performances of concrete can be evidently improved, functions of water reduction, early strengthening and air entrainment are realized, and the mortar additive is higher in adaptability to various concretes and extensive in application prospect.