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54results about How to "Improve water stability" patented technology

Saline-alkali soil modifier and use method thereof

The invention belongs to the technical field of saline-alkali soil improvement, particularly relates to a saline-alkali soil improver and a use method thereof, and provides the following scheme aiming at the problems that an existing saline-alkali soil improver cannot remarkably improve the soil structure of saline-alkali soil with the high salinization degree, consequently, the soil water stability is low, and plants are difficult to grow normally. The flue gas desulfurization gypsum comprises the following raw materials in parts by weight: 800-1200 parts of flue gas desulfurization gypsum, 10-60 parts of aluminum sulfate and 20-70 parts of an organic material, through use of the desulfurized gypsum, aluminum sulfate, an organic material, sodium lignin sulfonate, ammonium sulfate, carbamide, acrylic acid, chitosan, a dispersant, a biological agent, a wormcast fermentation broth, wood vinegar, calcium silicate, alginic acid, polysaccharide, hydrogel, plant peptide and polyurethane, the saline-alkali soil structure with a high salinization degree is significantly improved; the soil water stability is effectively improved, and the normal growth of plants is ensured.
Owner:BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES

Slope protection material based on building beta gypsum as well as preparation method and construction method of slope protection material

The invention relates to the technical field of gypsum, and discloses a slope protection material based on building beta gypsum as well as a preparation method and a construction method thereof, the slope protection material comprises 40-55 parts of building beta gypsum, 8-15 parts of phosphogypsum, 2-5 parts of a curing agent, 10-20 parts of fly ash and 40-60 parts of water; the curing agent comprises calcium hydroxide, potassium carbonate, acrylic resin and calcium carbonate. After the slope protection material provided by the invention is cured, the leachate of the slope protection material reaches the first-grade discharge water standard through a vibroflotation water method. The innovation ensures the environmental protection property of the material in the application process, solves the problem of low water stability of the traditional beta gypsum, increases the water softening coefficient of the building beta gypsum to 0.7, solves the influence on the environment in the treatment process, and meets the requirements of green construction and sustainable development.
Owner:SICHUAN LOMON IND GYPSUM DEV CO LTD

Sewage treatment system capable of accurately removing phosphorus

The utility model discloses a sewage treatment system capable of accurately removing phosphorus, and belongs to the technical field of sewage treatment. The system comprises a sand water pretreatment tank, a biological treatment tank, a secondary sedimentation tank, a water-collecting well, a coagulative precipitation tank, an online instrument and a dosing room, a total phosphorus and flow online monitor is mounted at the water-collecting well and transmits a detected total phosphorus value of effluent of the water-collecting well to a controller, and when a critical value is reached, the controller starts a metering diaphragm pump in the dosing room, so that the effluent of the water-collecting well flows out of the dosing room. And adding a corresponding amount of dephosphorization agent. The system is high in automation degree, the sewage treatment system is more stable, the usage amount of chemicals is saved to the maximum extent, chemical adding and phosphorus removal are more reasonable, and the labor and sewage operation cost is also reduced. The system is high in automation degree, the water outlet stability can be improved, and the problem that medicine adding lags is solved to the maximum extent; and the dosage can be controlled, so that the dosage of chemicals is saved to the greatest extent, the chemicals are more reasonably added to remove phosphorus, and the effects of reducing cost and increasing efficiency are realized.
Owner:DALIAN DAGUSHAN SEWAGE TREATMENT CO LTD

SBS modified asphalt and preparation method thereof

The invention relates to the technical field of preparation of modified asphalt, in particular to SBS modified asphalt and a preparation method thereof. The SBS modified asphalt provided by the invention is prepared from the following raw materials: matrix asphalt, a linear SBS modifier 791H, a star SBS modifier 4306 and an auxiliary agent, the auxiliary agent is selected from one or two of aromatic oil, naphtha, a stabilizer and furfural extract oil. The modified asphalt prepared by the invention has high storage stability and ageing resistance, the high-temperature performance and water stability are remarkably improved, and the overall performance is better than that of linear SBS modified asphalt. According to the high-stability SBS modified asphalt disclosed by the invention, the storage stability problem is solved, various properties and pavement performance of the SBS modified asphalt are integrally improved, and the high-stability SBS modified asphalt is simple and convenient to prepare, short in processing flow, simple in equipment, mild in process condition, rapid in production and low in modification cost.
Owner:CHAMBROAD (HAINAN) ADVANCED MATERIAL LTD +1

A high-strength cementitious material based on slag and a preparation method thereof

The present application relates to the field of cementitious materials, and in particular to a high-strength cementitious material based on slag and a preparation method thereof. The high-strength cementitious material based on slag, in parts by mass, comprises the following raw materials: 50 to 65 parts of blast furnace slag, 15 to 25 parts of Portland cement, 5 to 12 parts of fly ash, 10 to 20 parts of filler, 0.5 to 1 part of water reducer, 1 to 3 parts of reinforcing agent, 5 to 15 parts of resin material, 6 to 12 parts of sodium bentonite, and 20 to 40 parts of water. The cementitious material prepared in the present application not only has excellent material strength, but also can ensure good waterproofness, corrosion resistance, etc., and can effectively alleviate the problem of poor stability of the cementitious material caused by differences in slag composition, thereby effectively expanding the application environment and field of slag-based cementitious materials, and has very excellent application prospects.
Owner:HAINA MEITENG INTELLIGENT MFG (SHANDONG) CO LTD

Recycled asphalt mixture of high-consumption RAP fine material and preparation method of recycled asphalt mixture

PendingCN122036238AReduce disposal ratesReduce energy consumptionProcess engineeringAsphalt
The invention relates to the technical field of recycled asphalt, in particular to a high-consumption RAP fine aggregate recycled asphalt mixture and a preparation method thereof.The high-consumption RAP fine aggregate recycled asphalt mixture is prepared from, by weight, 30-50 parts of RAP fine aggregate, 10-30 parts of RAP coarse aggregate, 25-30 parts of new coarse aggregate, 4-5.2 parts of matrix asphalt, 3-5 parts of cold additive recycled rubber cement, 3-5 parts of mineral powder and 0.2-0.26 part of warm mixing agent. When the total doping amount of the RAP is 60%, the proportion of the fine materials in the total RAP is larger than or equal to 50%, the fine materials can be stably doped, the discarding rate and energy consumption of the fine materials are remarkably reduced, and the RAP fine materials can be consumed in a high proportion.
Owner:HUBEI PROVINCE FREEWAY IND DEV +1

A method for preparing modified phosphogypsum base material for road engineering

PendingCN122079517ARealize network reconstructionImprove water stabilityHydration reactionEtching
This application relates to the field of road engineering materials technology, and discloses a method for preparing modified phosphogypsum base material for road engineering, comprising the following steps: mixing aged phosphogypsum with ferrous sulfate heptahydrate, sodium fluorosilicate, and manganese sulfate monohydrate, utilizing the inherent moisture of the phosphogypsum to dissolve the salts and form an acidic slurry; adding heat-curing dry powder and high-speed shearing, utilizing the heat of hydration to raise the temperature to 65℃-85℃ to create a high-temperature strong alkaline environment, initiating manganese catalytic oxidation and slag thermal etching; subsequently, high-pressure injection of a rapid cooling conditioning liquid, utilizing the latent heat of vaporization to rapidly cool to below 45℃ to complete rapid cooling quenching and slow setting locking; unloading and aging to obtain the modified phosphogypsum base material. This invention, through the release of chemical energy by quicklime hydration to construct a high-temperature strong alkaline reaction field, achieves deep mineralization of impurities and reconstruction of the cementitious material network, significantly improving the water stability and mechanical properties of the base material.
Owner:ZHANJIANG CHANGHE ENVIRONMENTAL PROTECTION TECH CO LTD

Flame-retardant thermoplastic elastomer compound and method for producing the same

This invention relates to the field of polymer materials technology, specifically disclosing a flame-retardant thermoplastic elastomer compound and its preparation method. The flame-retardant thermoplastic elastomer compound comprises 50-80 parts SEBS, 10-30 parts PP, 5-15 parts compatibilizer, 10-30 parts composite flame retardant, 3-10 parts plasticizer, 0.2-1 parts antioxidant, and 0.1-0.5 parts lubricant. The composite flame retardant is prepared by reacting and mixing an intumescent flame retardant, barium metaphosphate, boron nitride, triallyl isocyanurate, and SEBS. The flame-retardant thermoplastic elastomer compound of this application possesses good flame retardancy, mechanical properties, and water resistance stability.
Owner:GUANGDONG SHENGJIA RUBBER & PLASTIC TECHNOLOGY CO LTD

BIPV guide rail type water guide groove connecting structure and water guide assembly

The utility model discloses a building integrated photovoltaics (BIPV) guide rail type water guide groove connecting structure and a water guide assembly, the connecting structure comprises a supporting groove and a limiting piece, the limiting piece is located on the inner bottom wall of the supporting groove and longitudinally extends along the supporting groove, the cross section of the limiting piece is T-shaped, the limiting piece is used for being embedded with a guide groove in the outer bottom wall of the water guide groove, and the two ends of the supporting groove are open. The supporting groove is used for being inserted into the ends of the two water guiding grooves, the inner wall of the supporting groove can be attached to the outer walls of the water guiding grooves, first flat edges are arranged at openings in the two sides of the supporting groove, second flat edges are arranged at openings in the two sides of the water guiding grooves, the first flat edges are attached to the second flat edges, and locking pieces are arranged on the first flat edges and the second flat edges. The connecting structure is used for limiting the relative displacement of the supporting groove and the water guiding groove in the longitudinal direction and is good in waterproofness, good in wind uplift resistance and easy to install. The water guide assembly has long-acting water resistance and structural stability in a complex environment, and is simple in structure, convenient to disassemble and assemble, convenient to machine, low in material consumption and large in water guide amount.
Owner:HUNAN RED SOLAR NEW ENERGY SCI & TECH CO LTD

Organic polymer sphere adsorbent for adsorbing precious metal as well as preparation method and application of organic polymer sphere adsorbent

The invention belongs to the field of recycling of precious metal resources in environmental engineering, and particularly relates to a preparation method and application of an organic polymer sphere adsorbent. The amidoxime modified self-polymerized microporous polymer (AO-PIM-1) is prepared into the spherical adsorbent through a phase inversion method, and compared with other traditional adsorbents, the polymer sphere adsorbent is high in specific surface area and good in thermal stability and water stability and has a large number of functional groups with high combining capacity for Au ions. In a low-concentration Au solution, a good adsorption effect and excellent adsorption selectivity are still kept, and Au ions in electronic waste leachate can be well adsorbed and recycled.
Owner:ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY +1

A mesh clothing lifting system

This utility model discloses a netting lifting system, including a netting rack end face. Each of the four corners of the netting rack end face is equipped with a traction execution module. The inner side of each traction execution module is provided with a traction limiting guide rail, a transmission end connecting unit, and opposing limiting pillars. The traction limiting guide rail is used to slide and limit the vertical lifting of the traction execution module. The netting rack support module is connected to a breeding platform, and the transmission end connecting unit is connected to the platform's traction end, providing power transmission for the vertical lifting of the traction execution module. The symmetrical arrangement of the traction limiting guide rail and the opposing limiting pillars forms a rigid track, allowing the directional roller transmission component to have fitting guide cavities on both sides that strictly engage with the pillars, forcibly limiting its sliding only in the vertical direction. This greatly restricts the horizontal degree of freedom, ensuring that the lifting process strictly follows a vertical path, reducing swaying and deviation, and improving the overall stability after lifting and adjusting.
Owner:SOUTHERN MARINE SCI & ENG GUANGDONG LAB (ZHUHAI) +1

Improved red sandstone roadbed filler based on multi-source solid waste and mixing ratio optimization method

ActiveCN121225974Breduce water sensitivityImprove physical and mechanical propertiesSolid waste managementComputational materials scienceEconomic benefitsProcess engineering
The application discloses a kind of based on multiple-source solid waste's improved red sandstone roadbed filler and mix proportion optimization method, belong to the field of red sandstone filler green low carbon improvement.Improved red sandstone roadbed filler is red sandstone as improved matrix, with match calcium carbide slag, rice husk ash, fly ash as cementing component preparation, wherein calcium carbide slag provides calcium source and alkaline environment, rice husk ash provides silicon source, fly ash provides aluminum source, three reactions occur in alkaline environment and generate abundant cementing products, realize red sandstone improvement.At the same time, with three cementing component contents as design variable, with bearing ratio, unconfined compressive strength, water stability coefficient as road evaluation index, construct road performance response model, through multi-index optimization, clear cementing component optimization ratio range.The method can exert the synergistic effect of multiple-source solid waste chemical composition, can be optimized according to different application scene performance requirements Ratio, realize red sandstone efficient improvement and multiple-source solid waste high-value utilization, with economic benefit and environmental benefit.
Owner:ANHUI ROAD & BRIDGE GRP +1

Multi-source solid waste silt curing agent as well as preparation method and application thereof

The invention discloses a multi-source solid waste silt curing agent as well as a preparation method and application thereof, and belongs to the technical field of silt curing. The multi-source solid waste silt curing agent is prepared from the following raw materials in percentage by mass: 20 to 30 percent of basalt solid waste, 5 to 10 percent of waste concrete micro powder, 15 to 25 percent of slag, 20 to 35 percent of alkaline excitant, 5 to 15 percent of sodium gluconate and 5 to 10 percent of polypropylene fiber. Most of the raw materials of the multi-source solid waste silt curing agent are derived from industrial wastes, the cost is low, and compared with a cement curing agent, the multi-source solid waste silt curing agent has a better silt curing effect and can achieve required engineering characteristics.
Owner:LUDONG UNIVERSITY

A system for treating exhaust gas from antimony ingot production

The application relates to the technical field of waste gas treatment, in particular to an antimony ingot production waste gas treatment system which comprises a cooling unit, a dust removal unit and an adsorption unit; the adsorption unit comprises a first adsorption unit and a second adsorption unit; the first adsorption unit reduces the SO2 content in waste gas through a sodium alkali method to obtain low SO2 concentration waste gas; the second adsorption unit processes the low SO2 concentration waste gas through an ultracrosslinked porous ionic polymer to obtain purified waste gas; after being processed by the system, the SO2 content in the waste gas is less than or equal to 50 mg / m 3 , which meets the waste gas emission standard.
Owner:GUIZHOU HUAXING METALLURGY CO LTD

A perovskite solar cell based on an organically modified lithium salt-doped hole transport layer

This invention discloses a perovskite solar cell based on an organically modified lithium salt-doped hole transport layer. Organic molecules containing at least two electron-donating groups are directly introduced into the lithium salt-doped hole transport layer and spin-coated onto the perovskite film surface in a one-step deposition process. By strictly controlling the amount of organic molecules added, the spin-coating speed, and the spin-coating time in the lithium salt-doped hole transport layer, the overall modification and optimization of the perovskite solar cell device is achieved. This results in a dual effect of reducing film defects and improving the water stability of the lithium salt-doped hole transport layer, thereby enhancing the photoelectric conversion efficiency and stability of the perovskite solar cell. Furthermore, this invention combines the deposition of the passivation layer and the hole transport layer, significantly reducing the construction steps of the perovskite solar cell, lowering manufacturing costs, and offering a simple, effective, and reproducible fabrication process.
Owner:SHAANXI NORMAL UNIV

A high performance cold patch asphalt mixture and preparation method thereof

ActiveCN118684452Bno emissionssave fuel
The invention discloses a high-performance cold patch asphalt mixture and a preparation method thereof. The raw material components of the high-performance cold patch asphalt mixture include: cold patch liquid and aggregate, the mass dosage of the cold patch liquid is 5.05-5.15% of the mass of the aggregate; the raw material composition of the cold patch liquid includes: 80-83 parts of asphalt, 16-20 parts of diesel, 1-2 parts of linoleic acid, 1-2 parts of hydrogenated rosin stearate polyethylene glycol ester, 5-10 parts of acrylic rosin epoxy resin, 0.05-0.1 parts of aluminum chloride and 1-1.5 parts of SBR latex; the parts are by mass. The present invention achieves mixing at room temperature, does not need to heat aggregates, saves fuel, has no gas emissions, reduces production costs, and improves environmental benefits; the high-performance cold patch asphalt mixture has good adhesion, good water stability, high strength, does not become loose or peel off under the action of vehicle loads, and has a long service life; the construction workability and storage stability of the cold patch material are improved, and there are no special requirements for the operating environment. When repairing potholes, the cold patch material can be directly placed in the pothole and properly rolled.
Owner:LUAN GONGXIN ROAD MATERIALS CO LTD

A dynamic multi-stage deep treatment system for textile fabric printing and dyeing wastewater

The application discloses a kind of textile fabric printing and dyeing wastewater dynamic multistage depth processing system, and the application relates to wastewater treatment technical field, including reaction tank and control module, the sidewall of the reaction tank is provided with aeration assembly, the aeration assembly includes several vice gas pipes arranged in the lower side of reaction tank interior, several aeration holes are formed in the vice gas pipe for gas supply to reaction tank interior, the upper side of the reaction tank is provided with partition assembly, the partition assembly includes partition plate, the partition plate is used to partition the water body in reaction tank, the partition plate can be moved and lifted in the reaction tank, and the directional transfer of water body on both sides of the partition is realized by water pump, so that the effective reaction zone volume of the reaction tank can be dynamically reconstructed according to the actual water inflow, the water body is concentrated and the aeration assembly in the waterless area is closed under small water condition, so as to improve the effective utilization rate of unit aeration gas, and has the advantages of dynamic adjustment of effective reaction process and overall treatment efficiency.
Owner:JINHHUA YASHUAI TEXTILES CO LTD

Zero-dimensional indium-based organic-inorganic hybrid perovskite material and synthesis method thereof

The invention discloses a zero-dimensional indium-based organic-inorganic hybrid perovskite material and a synthesis method thereof, and belongs to the technical field of photoelectric materials, the perovskite material has a general formula, R is one or more organic cations selected from methylamine, formamidine and cesium, and X is one or more halide ions selected from methylamine, formamidine and cesium; the invention further discloses a synthesis method of the material, the synthesis method comprises the steps of precursor solution preparation, coordination regulation and control, solvothermal reaction, product separation, surface modification, purification and drying, and the crystal structure and the surface chemical environment are precisely regulated and controlled through the synergistic effect of coordination regulation and surface passivation. The photoluminescence quantum yield of the material reaches 82% or above, and the material has excellent luminescence performance in a solution state, has ultrahigh environmental, water and thermal stability, and is lead-free, non-toxic and environment-friendly; the material can be widely applied to the photoelectric fields of light emitting diodes, X-ray scintillators, photocatalysis and the like, and the device performance is excellent.
Owner:陈钇辰

Water outlet nozzle and automatic noodle stretching machine thereof

The utility model relates to the technical field of water outlet nozzles, and provides a water outlet nozzle and an automatic noodle stretching machine thereof, the water outlet nozzle comprises a water outlet nozzle main body provided with a water inlet channel and a water outlet channel, the side part of the water outlet nozzle main body is provided with a first connecting end, and a gas inlet and outlet gap communicated with the first connecting end is arranged between the water inlet channel and the water outlet channel; the first end of the water inlet channel communicates with the water outlet channel. By arranging the gas inlet and outlet gap and the first connecting end, when hot water flows through the water outlet nozzle, steam can be discharged from the first connecting end through the gas inlet and outlet gap, water-steam separation is achieved, pressure rise or hot water splashing caused by steam gathering is avoided, and water outlet stability and safety are improved.
Owner:FOSHAN TELI HEALTH SERVICE CO LTD

Feed lactic acid bacteria additive and preparation method thereof

ActiveCN121986869APrevent viable bacterial counts from declininggood synergyFood processingAnimal feeding stuffBiotechnologyCarrageenan
The invention relates to the technical field of microbial feed additives, and discloses a feed lactic acid bacteria additive and a preparation method thereof.The preparation method comprises the steps that lactobacillus plantarum and / or enterococcus faecalis are / is used as strains for activation and expanding culture, agricultural and sideline product waste is used as a substrate for liquid-state deep fermentation, and mature fermentation liquor is obtained; mixing the mature fermentation liquor with a composite protective agent containing double essential oil, chitosan, theabrownin and porous silicon dioxide, granulating, and pre-drying at low temperature to obtain a semi-dry particle core; and coating with kappa-carrageenan / konjac glucomannan / phytosterol ester composite gel, drying and packaging to obtain a finished product. The double essential oils, the chitosan and the theabrownin are combined to form a full-spectrum active antibacterial system; the elastic composite gel outer layer realizes dual protection of liquid water and water vapor; porous silicon dioxide actively maintains low water activity of particles to prevent lactic acid bacteria from being recovered in advance; the product has the advantages of high viable count, strong heat and acid resistance and excellent storage stability.
Owner:JILIN UNIVERSITY

Fe-MOF hydrogel bead phosphorus adsorption material and preparation method thereof

The invention provides a Fe-MOF hydrogel bead phosphorus adsorption material and a preparation method thereof, and belongs to the technical field of adsorption materials. The preparation method comprises the following steps: mixing phthalic acid and ferric nitrate in an N, N-dimethylformamide solution, then carrying out ultrasonic dispersion and centrifugation to collect solid substances, and sequentially drying and grinding the solid substances to obtain a Fe-MOF material; the Fe-MOF material and sodium alginate are mixed in an aqueous solution for water bath heating, and Fe-MOF hydrogel is obtained; the Fe-MOF hydrogel is dropwise added into a CaCl2 solution, and after aging, the Fe-MOF hydrogel bead phosphorus adsorption material is obtained. The Fe-MOFs are loaded on the hydrogel, so that the separation efficiency of the material can be effectively improved, and the problem that the adsorbent is difficult to recover is solved.
Owner:HOHAI UNIV

Preparation method and application of citric acid modified CD-MOF

The invention provides a preparation method and application of a citric acid modified Cd-MOF material, and belongs to the technical field of metal organic framework materials. The citric acid modified beta-cyclodextrin metal organic framework (CA-beta-CD-MOF) is synthesized by adopting a chemical grafting and steam diffusion method, and the adsorption performance and the reusability of the citric acid modified beta-cyclodextrin metal organic framework (CA-beta-CD-MOF) are systematically researched. Parameters such as concentration, dosage, pH and the like of citric acid are associated, the adsorption effect of the citric acid on heavy elements in a portable solution is investigated, and the adsorption capacities of the citric acid on anionic dye Congo red (CR) and heavy metal ions (Cu < 2 + >) are as high as 900.9 and 287.4 mg.g <-1 > respectively. The citric acid modified beta-cyclodextrin metal organic framework (CA-beta-CD-MOF) obtained by the invention has the characteristics of being simple, green, environment-friendly and reusable, has excellent adsorption performance, and can be used for simultaneously removing organic dye and heavy metal ion pollution in water.
Owner:LISHUI UNIV

Modular Process Treatment Method and System Based on Multi-element Wastewater Treatment

This invention discloses a modular process treatment method and system for treating multi-component wastewater, relating to the field of wastewater treatment technology. The method includes: constructing a modular process unit library and standardizing its interfaces; establishing a module removal spectral fingerprint based on the modular process unit library; collecting toxicity characteristics and constructing feature vectors for the multi-component wastewater to be treated; performing module matching between the module removal spectral fingerprint and the wastewater feature vectors; constructing a process matrix to generate a set of candidate process paths; and filtering the candidate process paths; determining the optimal process path based on the filtering results and triggering modular switching; after switching, the module completes the treatment of multi-component wastewater and continuously evaluating the operational effect. This invention significantly improves the adaptive treatment accuracy, operational reliability, and overall energy efficiency of the modular process for treating multi-component wastewater, realizing a transition from fixed processes to intelligent dynamic configuration.
Owner:NANTONG HUAXIN ENVIRONMENTAL ENG EQUIP

Adsorbing material as well as preparation method and application thereof

The invention provides an adsorption material as well as a preparation method and application thereof. The invention relates to the technical field of metal organic framework materials, the adsorption material comprises a chromium-containing metal organic framework, and the chromium-containing metal organic framework is grafted with a modification group; the adsorption material has excellent adsorption efficiency on perfluorooctane sulfonic acid and salt compounds thereof in a water body, and efficient selective adsorption on PFOS is realized.
Owner:THREE GORGES ENVIRONMENTAL TECH CO LTD +1

A polyphosphoric acid-low density polyethylene composite modified asphalt and asphalt pavement material

The present application belongs to the technical field of asphalt pavement materials, and particularly relates to a polyphosphoric acid-low density polyethylene composite modified asphalt and an asphalt pavement material. The polyphosphoric acid-low density polyethylene composite modified asphalt is made of base asphalt, a polyethylene modifier and polyphosphoric acid. The polyethylene modifier is a kind of high polymer material, and has good elasticity and toughness, and can enhance the ability of the asphalt to resist permanent deformation, the elastic recovery ability and the fatigue resistance at high temperature. The polyphosphoric acid can chemically react with some components in the asphalt to form chemical bonds, thereby enhancing the interaction force between the asphalt molecules, improving the overall strength of the asphalt, and improving the compatibility between the polyethylene modifier and the asphalt, so that the polyethylene modifier is more uniformly distributed in the asphalt, and the ability of the asphalt to resist permanent deformation, the elastic recovery ability and the fatigue resistance at high temperature are further enhanced.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Cantilever retaining wall

The utility model relates to the field of building construction technology, concretely relates to a cantilever type retaining wall, including wall panel, wall toe board and wall heel board, the wall panel vertical setting, wall toe board and wall heel board set up in the both sides of wall panel respectively, wherein, the intersection of wall toe board and wall heel board both with wall panel is equipped with reinforcing body, the reinforcing body is equipped with reinforcing steel bar in, the lower part of wall panel is equipped with tenon, the tenon is set up and inclines to wall heel board, the retaining wall below is equipped with high pressure rotary jet pile and graded broken stone cushion, the graded broken stone cushion is laid in the downside and the inside and outside of wall toe board and wall heel board, a plurality of drainage channels are equipped on the wall panel, the back of drainage channel is equipped with filter back layer, the filter back layer includes the bagged gravel layer and bagged broken stone layer of alternately arranged. Therefore, can prevent the soil body loss and guarantee the smooth drainage more effectively and more durable.
Owner:RANKEN RAILWAY CONSTR GROUP

Preparation method and application of composite photocatalyst for visible light catalytic hydrogen evolution

The present invention discloses a preparation method and application of a visible light catalytic hydrogen evolution composite photocatalyst. The preparation method comprises the following steps: (1) dissolving terephthalic acid and cadmium acetate in a solvent and then performing a solvothermal reaction. After completion, a solid product is separated, washed and dried to obtain a Cd-MOF material. (2) dissolving thioacetamide (TAA) in anhydrous ethanol, then adding ammonium tridecanol molybdate and the Cd-MOF material, stirring evenly and then heating to react. After completion, a solid product is separated, washed and dried to obtain a photocatalyst Mo3S 13 / CdS@Cd‑MOF. The photocatalyst of the present invention has more active sites, higher light absorption capacity and transmission efficiency of photogenerated electrons, and improves the photocatalytic hydrogen evolution ability of the catalyst under visible light.
Owner:XUANKE HYDROGEN ENERGY TECH (GUANGDONG) CO LTD

High-temperature-resistant large-dosage RAP recycled asphalt mixture and gradient activation preparation method thereof

The invention relates to the technical field of recycled asphalt, and particularly discloses a high-temperature-resistant large-dosage RAP recycled asphalt mixture and a gradient activation preparation method thereof, and the recycled asphalt mixture comprises the following components in parts by weight: 70-90 parts of an RAP material, 5-26 parts of a new aggregate, 4-5 parts of SBS modified asphalt and 0.04-0.05 part of a composite regenerant. The composite regenerant and the bio-oil-based regenerant provided by the invention can recover the flexibility of the aged asphalt; after the silane coupling agent is hydrolyzed, silicon hydroxyl (Si-OH) formed by the silane coupling agent and the bio-oil-based regenerant can be bonded with hydroxyl (Si-O-Si bond) on the surface of the aggregate to form a bonded network, so that the interface adhesion strength is improved, the interface slippage is reduced, the skeleton of the mixture is more stable, the stripping resistance of the interface is enhanced, the dynamic stability and the water stability are improved, and the service life of the mixture is prolonged. And after the recycling agent recovers the flexibility of the asphalt, a bonding network formed by the silane coupling agent endows the recycled asphalt mixture with a high-elasticity characteristic, and the risk of fatigue cracking is reduced.
Owner:HUBEI PROVINCE FREEWAY IND DEV +1

Silsesquioxane porous material with near-infrared light catalytic effect as well as preparation method and application of silsesquioxane porous material

The invention provides a silsesquioxane porous material with a near-infrared light catalytic effect as well as a preparation method and application of the silsesquioxane porous material. The preparation method of the silsesquioxane porous material comprises the following steps: (1) in a solvent A, under the action of piperidine, enabling (3, 5, 5-trimethylcyclohex-2-alkenyl) malononitrile to react with a donor compound to obtain a D-A compound; (2) dissolving octavinyl silsesquioxane and the D-A compound obtained in the step (1) in a solvent B, adding a catalyst, uniformly stirring, and reacting; after the reaction is finished, cooling, filtering and washing to obtain a solid; and carrying out Soxhlet extraction on the obtained solid, and carrying out vacuum drying on the obtained solid to obtain the silsesquioxane porous material with the near-infrared light catalytic effect. The prepared silsesquioxane porous material has the advantages of wide absorption of near-infrared light, high light absorption and conversion efficiency, high catalytic activity, chemical stability and water stability.
Owner:SHANDONG UNIV

Basalt roadbed material in alpine region, preparation method of basalt roadbed material and roadbed base construction method

The invention relates to the technical field of road bases, in particular to a basalt roadbed material for alpine regions, a preparation method of the basalt roadbed material and a roadbed base construction method, and the basalt roadbed material comprises the following components in parts by weight: 100 parts of basalt macadam and 12-20 parts of high-strength low-temperature-resistant unsaturated polyester resin. Wherein the high-strength low-temperature-resistant unsaturated polyester resin is prepared from the following raw materials in parts by weight: 5 to 10 parts of phthalic anhydride, 20 to 32 parts of methylpropanediol, 24 to 28 parts of maleic anhydride, 25 to 30 parts of styrene, 25 to 30 parts of itaconic acid, 0.5 to 2.5 parts of peroxybenzoic acid, 0.02 to 0.06 part of methylhydroquinone, 1 to 2 parts of basalt fiber and 1 to 5 parts of hollow microspheres. The basalt roadbed material provided by the invention has relatively good cold resistance and stability in a low-temperature environment, is not easy to crack, and has a wide application prospect in the roadbed field.
Owner:BEIJING XUANZE NEW MATERIAL TECH CO LTD