73results about How to "Fully hydrated" patented technology

The invention discloses a method for preparing composite steel slag carbonized bricks, and belongs to the technical field of industrial waste slag utilization. According to the method, steel slags, kerosene and grinding aids are mixed, ball milled, ignited and cooled to obtain combustion slags; the combustion slags are then crushed and sieved to obtain pretreated steel slag powder; aggregates, thepretreated steel slag powder and hydrated lime are stirred and mixed with dispersion liquid to be poured into shape and placed at constant temperature and humidity to obtain unburned bricks; the unburned bricks are subjected to autoclave oxidation and fumigated with vinegar to obtain fumigated bricks; the fumigated bricks are then transferred to a carbonization box and subjected to carbonizationat constant temperature and humidity, and the composite steel slag carbonized bricks are obtained after discharge. The composite steel slag carbonized bricks prepared by adopting the method have excellent strength and stability.

The invention relates to a production process for a high-strength high-volume phosphogypsum baking-free brick. The production process comprises the following steps: (1), material pre-treating: mixing phosphogypsum with quick lime to obtain a material mixture, placing the material mixture in drying machinery for drying at 180 DEG C under a normal pressure condition after aging for one day to obtain a dehydrated phosphogypsum-quick lime neutralized material; (2), preparing materials: weighing the dehydrated phosphogypsum-quick lime neutralized material and yellow sand according to a proportion, adding into a stirrer for stirring and uniformly mixing to obtain mixed batch which comprises the following components in percent by weight: 70%-90% of dehydrated phosphogypsum-quick lime neutralized material, and 10%-30% of yellow sand; (3), watering and stirring; (4), pressing and forming; (5), soaking in water and hydrating; and (6), drying. The method provided by the invention is simple in step, not mixed with cement, and low in cost; and moreover, the prepared phosphogypsum baking-free brick is high in strength and suitable for industrial production.

The invention discloses a concrete synergist and a preparation method thereof. The acrylic fibers in the textile industry are used as the main raw material for preparing the concrete synergist; the concrete synergist prepared by the method is able to improve the strength grade of concrete, about 10% cement of the concrete can be saved, and meanwhile, the working performance and strength of the concrete can be ensured, and the production cost is decreased; the acrylic fibers serving as the main material for preparing the concrete synergist can be waste acrylic fibers obtained from acrylic fibers production and processing or other plants using acrylic fibers as the main raw materials. The method for preparing the concrete synergist has the advantages that the waste acrylic fibers are effectively utilized, so that the environmental burden caused by the waste acrylic fibers can be decreased, and a good application prospect is brought; the concrete synergist aims at improving concrete performances.

The invention discloses a preparation method of a pressure-resistant aerated brick, and belongs to the technical field of building materials. The preparation method comprises the following steps: sequentially weighing fluorite slag powder, cement, gypsum, modified mixed powder, pretreated vitrified micro beads, mixed nano powder, aluminum powder, sepiolite, graphite oxide, talcum powder, calcium stearate, sodium stearate, a dispersing agent and water according to weight parts, calcining the fluorite slag powder to obtain pretreated fluorite slag powder, mixing the pretreated fluorite slag powder with the gypsum, adding water, carrying out stirring and mixing to obtain pretreated mixed slurry, mixing the pretreated mixed slurry with the cement, adding the modified mixed powder, the pretreated vitrified micro beads, the mixed nano powder, the aluminum powder, the sepiolite, the graphite oxide, the talcum powder, the calcium stearate, the sodium stearate and the dispersing agent, carryingout stirring and mixing to obtain mixed slurry, carrying out moulding by casting on the mixed slurry, carrying out pre-curing and demoulding to obtain a blank, and carrying out autoclaved curing on the blank to obtain the pressure-resistant aerated brick. The pressure-resistant aerated brick obtained by the preparation method provided by the invention has excellent pressure resistance.

The invention discloses a waterproof and fireproof thermal insulation wall. The thermal insulation wall is prepared from raw materials as follows: 350-400 parts of magnesium oxide, 150-200 parts of magnesium chloride, 4-5 parts of phosphoric acid, 10-15 parts of an organosilicon waterproofing agent and 60-80 parts of expanded perlite. The thermal insulation wall has the advantages as follows: a magnesium oxychloride cement product is a product capable of being recycled and comprehensively utilized and is widely applied in the construction industry due to the characteristics of low price, highmechanical strength, good wear resistance, excellent flame retardation and the like, however, the magnesium-oxy-chloride cement product has the characteristics of poor water resistance, high probability of buckling deformation and the like. After the organosilicon waterproofing agent is added, MgCl2-6H2O in slurry reacts more sufficiently, damping of the product is reduced, besides, a reaction produced product forms hydrophobic capillary channels, external moisture cannot enter the capillary channels, and the water resistance of the magnesium-oxy-chloride cement product is greatly enhanced. Phosphoric acid can improve stability of magnesium oxychloride cement hydrate in water. The expanded perlite has good thermal insulation and flame retardance effects and a good thermal insulation effectdue to the characteristic of porosity.

The invention relates to high-strength anti-crack concrete and a preparation method thereof. The high-strength anti-crack concrete comprise, by weight, 450-500 parts of cement, 40-60 parts of fly ash,30-50 parts of silica fume, 1050-1150 parts of coarse aggregate, 580-600 parts of fine aggregate, 140-160 parts of modified waste ABS plastic particles, 40-60 parts of modified zeolite powder, 0.5-0.9 parts of polypropylene fibers and 15.4-17.1 parts of a polycarboxylate superplasticizer, and a water-binder ratio is 0.20 to 0.25. The high-strength anti-cracking concrete provided by the inventionhas the advantages of small internal shrinkage stress, high overall strength, obvious shrinkage reduction effect, excellent anti-cracking performance, simple preparation method, cheap and easily available raw materials, utilization of waste materials and high environmental protection benefit.

The invention relates to colored water-permeable concrete and a preparation method thereof, and belongs to the technical field of concrete production, the colored water-permeable concrete comprises the following components in parts by weight: 260-350 parts of cement, 80-90 parts of water, 1200-1300 parts of coarse aggregate, 5-7 parts of hybrid fiber, 3-6 parts of whisker filler, 2-4 parts of silicone acrylic emulsion, 25-35 parts of pigment and 3-5 parts of water reducing agent; wherein the hybrid fibers comprise steel fibers and nano calcium carbonate modified plant fibers; the preparation method comprises the following steps: S1, uniformly mixing and stirring the hybrid fibers and water; and S2, sequentially adding the excess materials into the mixture obtained in the step S1, and uniformly stirring to obtain the colored water-permeable concrete. The colored pervious concrete has the effect of improving the compressive strength of the colored pervious concrete.

The invention discloses inner wall putty for an architectural decoration project and belongs to the technical field of building materials. The inner wall putty comprises raw materials in parts by weight as follows: 2-4 parts of polyvinyl alcohol, 15-17 parts of a polyvinyl acetate emulsion, 14-18 parts of cement, 14-16 parts of ash calcium powder, 4-6 parts of zinc oxide, 6-8 parts of quartz powder, 10-12 parts of talcum powder, 2-6 parts of bentonite, 0.5-1 part of methyl cellulose ether, 1-3 parts of carboxymethyl cellulose, 3-5 parts of traditional Chinese medicine residues, 0.1-2 parts of a defoaming agent, 0.1-1 part of a dispersing agent, 0.5-1.5 parts of an insect-resisting agent and an appropriate amount of water. The invention further discloses a preparation method of the inner wall putty for the architectural decoration project. The inner wall putty is simple to prepare, has better strength, can effectively remove peculiar smell and sends forth fragrance and is beneficial to health preservation of habitants.

The invention discloses dry-hard concrete applied to a parking apron, and belongs to the technical field of concrete. The dry-hard concrete is prepared from 375-429 parts of cement, 857-985 parts of sand, 1,200-1,478 parts of broken stone, 57-69 parts of activated fly ash, 85-110 parts of mineral powder, 5-10 parts of plasticizing agent, 2-6 parts of expanding agent and 120-163 parts of water. Thedry-hard concrete has the advantages of being good in liquidity, high in compactibility, high in strength and good in durability.

The invention discloses a winter maintenance method for a concrete component. The method comprises a static stop stage, a heating stage, a constant temperature stage and a cooling stage which are precisely controlled through programs. The different stages are designed for requirements for concrete strength forming. Concrete early-stage strength is rapidly formed in the static stop stage so as to resist deformation in the concrete heating process. The concrete structure strength is rapidly formed in the heating stage. The hydration extent of cement in concrete is improved in the constant-temperature stage, and the strength is further improved. Concrete meets early-stage from removal and release requirements. By means of the maintenance method, the early-stage strength of concrete is effectively improved, the concrete component is prevented from being cracked in the maintenance process, the template circulation speed is improved, the production efficiency of the concrete component is improved, and therefore economic benefits are improved.

A manufacture method of a concrete prefabricated bridge deck with a plasticizer is characterized by comprising the specific steps: weighing concrete materials (by mass) of 40-50 parts of cement, 3-10parts of silica fume, 5-7 parts of carbide slag, 3-5 parts of steel slag, 30-40 parts of sand, 40-50 parts of crushed stone, 10-20 parts of water, and 3-4 parts of the plasticizer; adding the cement,silica fume, carbide slag, steel slag and water into a mixer, mixing, adding sand, crushed stone and the plasticizer, and continuing to mix well to obtain concrete. The concrete prefabricated bridge deck has a water retention rate of 90.4-93.2%, 28-day shrinkage of 0.102-0.116%, initial setting time of 200-210 min, final setting time of 370-390 min, one-day compressive strength of 20.5-22.4 MPa, 7-day compressive strength of 34.5-36.1 MPa, 28-day compressive strength of 47.5-49.2 MPa, and 14-day tensile strength of 1.86-1.93 MPa. The method provides significantly extended initial and final setting time and evidently improved compressive strength and tensile strength for the prior concrete, with shrinkage evidently reduced.

The invention discloses a double-layer water preparation containing oil-controlling starch particles. According to a preparation method, two kinds of starch particles with different densities and hydrophilic performance are adopted, so that suspension of the oil-controlling starch particles in the double-layer water preparation is realized, deposition of starch is not easily caused, and excellent oil controlling effect is realized. The invention also discloses the preparation method of the double-layer water preparation containing oil-controlling starch particles. According to the preparation method, cassava starch, polymethylsilsesquioxane, and hydroxypropyl starch phosphate are add at last so as to prevent starch gelatinization, control the stirring time of hydroxypropyl starch phosphate, ensure complete powder hydration, and avoid generation of excess foam, and it is convenient for filling in a later period.

The invention discloses a preparation method of a polyurethane foam dressing and a wound dressing patch, and relates to the medical field. The preparation method of the polyurethane foam dressing comprises the following steps: the step A, mixing and stirring hydrophobic polyol and hydrophilic diisocyanate according to a molar ratio of 1: 3-1: 8, and reacting to obtain a prepolymer containing 3-6 isocyanate groups; and the step B, mixing and stirring the prepolymer obtained in the step A, hydrophilic polyether polyol, a foaming agent, an end-capping reagent, an enhancer and a catalyst according to a molar ratio of 1: (0.5-2): (0.2-0.8): (0.2-0.8): (0.2-0.8), and reacting to form the polyurethane foam dressing. The wound dressing patch comprises a waterproof breathable film, a polyurethane foam dressing and an adhesion layer, and the waterproof breathable film is adhered to the polyurethane foam dressing through the adhesion layer. According to the invention, formation of tiny gaps through which water and gas can penetrate is facilitated, moisture of a wound and normal skin can be fully adjusted, and the wound healing speed is accelerated.

The invention belongs to the field of preparation of building materials, and particularly relates to concrete doped with a multi-component admixture and a preparation method of the concrete. The concrete comprises cement, the multi-component admixture, an iron tailing sand fine aggregate, natural sand, broken stones, waste stones and a water reducing agent, wherein each cubic meter of the concrete comprises 215 kg to 230 kg of the cement, 200 kg to 215 kg of the multi-component admixture, 260 kg to 300 kg of the iron tailing sand, 260 kg to 300 kg of the natural sand, 320 kg to 360 kg of the broken stones and 840 kg to 880 kg of the iron tailing sand waste stones, the multi-component admixture comprises iron tailings, desulfurized fly ash, slag, fly ash and silica fume in a weight ratio of 5: 2: 1: 0.5: 0.2; The concrete is low in cost and friendly to environment; the structure of the concrete is compact through synergistic matching and defect complementation of multiple solid wastes and aggregate grading optimization; and it is guaranteed that the solid waste mixing amount is large, and meanwhile the early strength and the later strength of the concrete are improved.

The invention discloses a vertical-axis high-frequency vibration mixer. The vertical-axis high-frequency vibration mixer comprises a vibration driving unit, a mixing driving unit, a mixing cylinder, a mixing device and an exciter; the vibration driving unit and the mixing driving unit are both fixedly arranged above the mixing cylinder; the mixing device is arranged in the mixing cylinder; a hole is formed in the center of an upper cover of the mixing cylinder; the upper end of the mixing device is coaxially arranged in the hole; the exciter is arranged in the mixing cylinder below the hole, and is connected with the vibration driving unit through an exciter connecting shaft; the mixing driving unit is connected with the upper end of the mixing device; the exciter is a polygonal solid shaft or hollow shaft with N smooth projections on the cross section, wherein N is greater than 2, and the centroid is overlapped with a rotating center; the generated excitation frequency is positively correlated to the projection number N linearly; and the heights of the projections are changed to adjust the amplitude of exciting force. The vertical-axis high-frequency vibration mixer breaks through the limit of incapability of improving the excitation frequency of a traditional vibration mixer, further reduces the friction force among molecules, and greatly improves macroscopic and microscopic quality of concrete finally.