55results about How to "Realize local materials" patented technology

Disclosed is a material for composite consolidating earthen road surface and construction method thereof, wherein the said material comprises: sandy soil ranging from 92-98% by wt, 2-8% by wt of cement, ZL-1 liquid curing agent or EN-1 liquid curing agent ranging from 0.1-0.3 permillage of by gross weight of gray soil mixture; or silty soil or clayey soil ranging from 90-96% by wt, 4-10% by wt of lime, ZL-1 liquid curing agent or EN-1 liquid curing agent ranging from 0.1-0.3 permillage by gross weight of gray soil mixture. The material for composite consolidating earthen road surface and its construction method takes extensively distributed soil as main material, reduces 20-50% construction costs, shortens construction time limit, resists freeze, and prolongs available construction time in northern area with early freezing time.

The invention discloses a composite curing agent suitable for peat soil and a preparation method thereof, and belongs to the field of civil building materials. The composite curing agent suitable forpeat soil is made from 100-300 parts of cement as a self-setting material, 70-150 parts of red clay as pore filling, particle dispersion and organic dilution components, 10-30 parts of phosphogypsum as an alkaline excitation component, 3-9 parts of sodium sulfate, 1.5-4.5 parts of sodium chloride as a hydration acceleration component, and 300-400 parts of water as a hydration inducing component. The curing agent can significantly improve the strength of peat and peaty soil, and the performance of the peat and peaty soil as a building foundation and a roadbed filler is optimized. The consumption of cement for curing peat soil is reduced, the red clay is easy to obtain from local sources, the utilization of waste soil in engineering is improved, and the use of phosphogypsum can reduce the environmental pollution caused by phosphogypsum stacking. The raw materials of the composite curing agent are easy to obtain, the preparation is simple, the cost is low, and the curing agent has certainenvironmental and economic benefits.

The invention relates to a diking method of a soft soil foundation dike, particularly a sludge-type soil combined secondary dike-back pressure diking method. The technical scheme of the invention is that a secondary dike is arranged on one or two sides inside and outside a main dike of a dike, the distance between the main and secondary dikes is 3-6 times height of the main dike, the section of the secondary is trapezoid or triangular, the height of the top of the secondary dike is higher than that of the top of a sludge-type soil-back pressure dike core by 0-0.5m, the sludge-type soil-back pressure dike core is arranged between the main and secondary dikes and is formed by hydraulic reclamation or backfilling, the heights of the secondary dike and the sludge-type soil-back pressure dike core are not smaller than one third and not larger than two third of the height of the main dike, and the secondary dike and the sludge-type soil-back pressure dike center are combined to form the back pressure structure. The diking method is suitable for the soft soil foundation dike projects, particularly the soft soil foundation dike projects without wave action conditions.

The invention discloses a double-wall type ribbed stone cutoff wall and a construction method thereof. The double-wall type ribbed stone cutoff wall comprises a strip-shaped basic stone cutoff wall body. A plurality of impact-resistant stone cutoff wall bodies are arranged on the surface, facing a falling stone generating zone, of the basic stone cutoff wall body, and the distances between the impact-resistant stone cutoff wall bodies and the basic stone cutoff wall body are equal. The basic stone cutoff wall body is connected with the impact-resistant stone cutoff wall bodies through connecting parts. When falling stone impacts the wall, because the impact-resistant stone cutoff wall bodies bear a large proportion of impact stress and absorb the vast majority of deformation, the basic stone cutoff wall body which is a basic structure behind the impact-resistant stone cutoff wall bodies is not prone to damage, and the stability and safety of the system are high. The impact-resistant stone cutoff wall bodies bear the major impact stress of the falling stone and thus are prone to damage, but the impact-resistant stone cutoff wall bodies are disconnected, so that only the damaged impact-resistant stone cutoff wall bodies need to be dismounted and reconstructed during maintenance. Meanwhile, the construction method of the stone cutoff wall is further provided. The double-wall type ribbed stone cutoff wall and the construction method thereof have the advantages that construction is fast, post-disaster repairing is easy, and investment is small.

The invention relates to a cleaning device for a fishing-light complementary solar photovoltaic panel. The cleaning device comprises a water conveying system, a supporting and fixing system, a track system, the solar photovoltaic panel, a cleaning mechanism, a storage battery, an inverter and a controller. The water conveying system pumps fishpond water to supply water to the cleaning mechanism, and the storage battery is connected with the solar photovoltaic panel to supply power to the cleaning mechanism; the cleaning mechanism is driven by the track system arranged on the solar photovoltaic panel to move transversely and longitudinally on the solar photovoltaic panel for cleaning, and large-area cleaning of the solar photovoltaic panel can be achieved; and according to the cleaning mechanism, through the internal design of a nozzle, a roller brush and a cleaning mop, dual cleaning of firstly brushing the surface of the solar photovoltaic panel and then rotatably mopping the surface of the solar photovoltaic panel can be achieved. The cleaning device can efficiently remove dirt such as accumulated dust and bird droppings on the surface of the solar photovoltaic panel in a large area, and the cleaning efficiency of the solar photovoltaic panel of a fishing-light complementary power station is improved.

The invention provides an afforestation drip irrigation system and an afforestation method for gobi desert regions. The afforestation drip irrigation system is applied by the aid of the afforestationmethod. The afforestation drip irrigation system comprises a head hub, a drip irrigation main pipe and drip irrigation branch pipes. The head hub, the drip irrigation main pipe and the drip irrigationbranch pipes are sequentially connected with one another, a plurality of drip irrigation capillary pipes which are arranged along tree rows are connected onto the drip irrigation branch pipes, the drip irrigation branch pipes further comprise water inlet pipes, the water inlet pipes are vertically embedded in tree pits, a pressure compensation type dripper is arranged on a certain position on each drip irrigation capillary pipe whenever the drip irrigation capillary pipe is in contact with the corresponding tree pit and is connected with a capillary pipe, the upper portions of the water inletpipes are exposed out of the ground, protective covers are arranged on the tops of the water inlet pipes with opening bottoms, capillary pipe holes are formed in the upper portions of the water inletpipes, and the capillary pipes extend into the water inlet pipes via the capillary pipe holes. The afforestation drip irrigation system and the afforestation method have the advantages that water andfertilizers can be directly delivered to the roots of trees by the water inlet pipes, accordingly, concealed drip irrigation can be implemented, evaporation from the ground can be reduced, drip irrigation water consumption can be decreased, and the survival rate of the trees can be greatly increased; breather holes are formed in the water inlet pipes, accordingly, the root systems of the trees can conveniently breathe, and the survival rate further can be increased.

The invention discloses a rapid and flexible forming method and flexible tool for a large-curvature thin-wall plate with the irregular surface. The flexible tool comprises a supporting base, a fixed support, a movable support, two layers of supporting plates and a plurality of unit pressing rods, wherein the fixed support and the movable support are assembled on the supporting base; the two layers of supporting plates are installed on the fixed support and the movable support through fixing frames; each layer of supporting plates comprise two opposite I-shaped supporting plates and two opposite II-shaped supporting plates; the two opposite I-shaped supporting plates and the two opposite II-shaped supporting plates are used as edges to define a rectangular or square cavity; the unit pressing rods are provided with external threads; the I-shaped supporting plates and the II-shaped supporting plates are provided with through holes; and internal threads are formed in the through holes. The unit pressing rods are assembled on the I-shaped supporting plates and the II-shaped supporting plates through the external threads and the internal threads to form two sets of upper and lower movable unit pressing rod arrays which are opposite in a one-to-one mode, so that the clamping problem in rapid reshaping and remanufacturing of a complex large-curvature irregular curved plate is solved.

The invention relates to a surface soil replacing material for an opencast coal mine, belonging to the field of ecological environment materials for land rehabilitation and ecological reconstruction techniques. The material is mainly prepared from the following components in percentage by weight through mixing: 30%-40% of surface soil, 20%-50% of mild clay, 30%-50% of sandy soil, 10%-20% of mixed soil, 0.1%-0.5% of organic matters (cow and sheep manure) and 0.1%-0.5% of modified straws. According to an improved formula, the basic characteristics of soil are maintained, the physical, chemical and biological characteristics of an original surface soil replacing material are improved, and the growth performance and stress resistance of plants are improved; and the surface soil replacing material is a specific material for realizing the land rehabilitation and ecological reconstruction of rehabilitation regions of the opencast coal mine.

The invention discloses a preparation method and a material using standards of a slate alkali reactivity restraining addition agent (FLSR-I). The addition agent is composed of mixing materials, ganister sands, nanometer SiO2, triethanolamine, a high-efficient plasticizing agent and an air entraining agent, the preparation method comprises accurately weighting dosage of the mixing materials, the ganister sands, the nanometer SiO2, the triethanolamine, the high-efficient plasticizing agent and the air entraining agent in proportion during preparation; sufficiently blending the mixing materials,the ganister sands, the nanometer SiO2, the high-efficient plasticizing agent and the air entraining agent, and manufacturing end products of the restraining addition agent by blending with the triethanolamine; and mixing in preparation of alkali reactive aggregate concrete in carious grades in proportion. The preparation method can effectively restrain reaction of slate alkali aggregate with expansion ratio between 0.2% to 0.5% and is obvious in restraining effect, simple and convenient in using method and free of needs of special construction control, thereby being capable of greatly lowering engineering using materials and transportation cost, and expanding material selecting range of the engineering using materials simultaneously.

The invention relates to an intertidal zone cofferdam construction device. The intertidal zone cofferdam construction device is characterized by comprising a first floating body component and a second floating body component which are placed on the upper surface of an intertidal zone; the first floating body component and the second floating body component are arranged on the two sides of a soil taking area; a first tower is fixedly arranged above the first floating body component, a second tower is fixedly arranged above the second floating body component, and a truss is arranged between the first tower and the second tower; one end of the truss extends to the position above the intertidal zone from the side of the first tower; a horizontal sliding rail arranged in the length direction of the truss is arranged on the truss, the sliding rail is provided with a walking trolley, the walking trolley is provided with a winch unit and a drive device, and a steel wire rope of the winch unit is connected with a grab bucket. The invention further discloses a cofferdam method utilizing the above intertidal zone cofferdam construction device for using of local materials on the cofferdam field. Above all, the problem that the construction technology of traditional cofferdams such as the sand bag cofferdam and the earth rock cofferdam is difficult is solved; and the work environment is improved, the work efficiency is improved, and the construction cost is reduced.

The invention discloses a rubber boat drive device which comprises a propeller, a connection rod, a drive device and a fixing frame. The drive device is composed of two manual electric drills, output shafts of the manual electric drills are connected with the one end of the connection rod, the other end of the connection rod is connected with the propeller, the manual electric drills are arranged on the fixing frame, and the fixing frame is disposed on a rubber boat. By means of double-power drive, the rubber boat drive device is simple in structure, low in noise and convenient to carry.

The invention discloses a building block made of quartz sand as a raw material and a preparation method of the building block, and solves problems of low reactivity of quartz sand, difficulty in grinding, high energy consumption and the like in the conventional building blocks. The building block provided by the invention is prepared from the following raw materials in parts by weight: 55-65 parts of quartz sand, 10-15 parts of carbide slag, 10-20 parts of silicon-aluminum active admixture, 6-8 parts of lime, 2-3 parts of cement, 3-7 parts of additive and 8-10 parts of acid solution with concentration of 5%. The preparation method comprises the following steps: firstly mixing and grinding quartz sand with the acid solution; then, adding the other components to be grinded to obtain slurry; placing the slurry in a stirring machine; adding cement and additive to be stirred and formed; then, performing gas release, blank repairing and steam pressing to obtain a sand aerated building block. The building block provided by the invention is simple in process, low in production cost, high in reactivity, excellent in performance, low in energy consumption and friendly to the environment.

The present invention discloses a method and an apparatus for flue gas desulfurization and sulfuric acid production. The method comprises that (1) flue gas is subjected to heat exchange through a sulfuric acid storage tank, and then the obtained flue gas enters a dust removing quenching tower and is subjected to primary dust removing cooling; (2) the cooled flue gas enters a desulfurization tower and sequentially passes through a deep dust removing unit, a desulfurization unit and a water washing unit from bottom to top; (3) in the water washing unit, the SOx in the flue gas is absorbed with fresh water, the liquid phase overflows and sequentially passes through the desulfurization unit and the deep dust removing unit, the obtained liquid phase enters the dust removing quenching tower to obtain a rich absorption liquid, solid-liquid separation is performed, and the gas phase is discharged in atmosphere after defogging; and (4) the rich absorption liquid being subjected to solid waste separation is discharged into an oxidation tank, the liquid phase enters a regeneration tower, the Fe<3+> / Fe<2+> in the liquid phase is removed, and the obtained liquid phase enters the sulfuric acid storage tank in the form of dilute sulfuric acid. With the method and the apparatus of the present invention, the SO2 in the flue gas can be absorbed and concentrated, and can be oxidized into the sulfuric acid so as to produce the high concentration sulfuric acid, the purified flue gas can meet the national or local relevant standard requirements, and the method and the apparatus are suitable for the recovery treatment of flue gas containing various concentrations of sulfur dioxide.

The invention is applicable to a portable solar umbrella with a fan. The portable solar umbrella comprises a foldable connecting frame (1), a solar fixing shaft (2), a locking nut (3), a storage battery (4), a human strap fixing device (5), the miniature fan (6), a rotation center (7), detachable solar panels (8) and rainproof plates (9). A working principle includes that all components of the portable solar umbrella with the fan can be detached, all devices are connected with the foldable connecting frame (1), and power transmission lines are arranged in the connecting frame (1). Power generated by the solar panels (8) can be transmitted to the storage battery (4) via the lines, all energy required by the miniature fan (6) can be provided by the storage battery (4), and the miniature fan is adjustable, can blow wind at different classes for different positions and can be controllably switched on and off. The portable solar umbrella with the fan has the advantages that the portable solar umbrella not only has a sunshade function for customers, but also can provide pleasant sensation of cool summer wind for the customers, and accordingly the customers can enjoy the portable solar umbrella in both the material aspect and the spirit aspect.

The invention provides a sewage adsorbent based on oily dross. The sewage adsorbent is prepared through the following steps: (1) uniformly mixing oily dross and a dehydrating agent and then drying, thereby acquiring solid dross; (2) performing pyrolysis on the solid dross at 550-650 DEG C for 1-3 hours, thereby preparing solid residues; and (3) grinding and sieving the solid residues, and then removing oxides and ash components from the solid residues, thereby acquiring the sewage adsorbent. The sewage adsorbent can be used for removing COD and petroleum from the oil extraction sewage. The sewage adsorbent provided by the invention not only can be used for harmlessly disposing the oily dross but also can supply an absorbing material for disposing oil extraction sewage and can realize the circulating utilization of 'waste-resource-product' of an oil field united station.

The invention discloses a screening type clay sand fixing grass planter which is characterized in that a collection and transportation device, a screening device, a sowing device and a driving device are arranged on a rack, wherein the screening device is arranged below the tail end of the collection and transportation device; the driving device is sued for driving the collection and transportation device and the screening device; the collection and transportation device comprises a sand excavation plate and a scraper type conveyer belt; the sand excavation plate is hinged on the rack and the middle part of the sand excavation plate is connected with the rack through a hydraulic rod; the tail end of the sand excavation plate extends onto the scraper type conveyer belt; the screening device comprises a plurality of layers of screens and a bottom plate; the tail end of the scraper type conveyer belt is arranged above the uppermost screen; each layer of screen is inclined and the lower end of each screen is the side in the advancing direction; the bottom plate is arranged below the lowermost screen; the sowing device comprises a seed box and a seed transportation pipe which is communicated with the seed box; and the outlet of the seed transportation pipe is arranged at the lower end of the lowermost screen. According to the screening type clay sand fixing grass planter, the mechanical operation of a clay sand-barrier sand fixing technology is carried out, and the aims of using local materials and permanently fixing sand with low cost are achieved.

The invention relates to a fabricated heat preservation decoration and structure integration wall and a preparing and installing technology thereof. The fabricated heat preservation decoration and structure integration wall comprises a bearing skeleton and a gradual change composite heat preservation layer in pouring fixed connection with the bearing skeleton, and the gradual change composite heatpreservation layer comprises a micropore foam concrete base layer, a heat preservation core material layer and an inorganic heat preservation material gradual change transition layer which are sequentially arranged. The side face of the inorganic heat preservation material gradual change transition layer is provided with an outer decorative panel protective layer fixedly connected with the bearing skeleton. The bearing skeleton and the gradual change composite heat preservation layer jointly form a prefabricated composite outer wall panel, the bearing skeleton is adopted as the skeleton structure for bearing various load effects, and the anti-seismic and wind resistance structure performance of the wall panel is enhanced; the gradual change composite heat preservation layer overcomes thedefects of surface layer material cracking, leakage and large deformation caused by large internal and external temperature differences, and a building exterior wall integrating facade decoration, fire prevention, heat preservation, heat insulation and structure safety is formed.

The invention relates to an ecological protection construction method of a stepped 3D stiffened bridge abutment conical slope. The construction method mainly comprises the construction steps of construction of a foundation A, construction of a drainage blanket, construction of a first-storey stepped component, construction of first-storey backfill soil, protection construction of the conical slopebelow the maximum water level, and protection construction of the conical slope above the maximum water level. Through the construction method, after completion of the foundation A and the drainage blanket, the first-storey stepped component and a corner component are mounted on the foundation; the first-storey backfill soil is laid, and the backwater ends of geogrids are reversely enveloped; referring to the above steps, protection construction is conducted on the portion, below the maximum water level, of the conical slope; further layered construction is conducted on the portion, above themaximum water level, of the conical slope, the two ends of each geogrid are reversely enveloped, and an isolation zone is isolated at the end facing water. The ecological protection construction method of the conical slope has the advantages that construction is fast and convenient, the stability is high, the waterproof performance is good, the ecological effect is high, the occupied area is small, the comprehensive benefits are prominent, and the defects existing in signal ecological protection and engineering protection are overcome.

The invention discloses a preparation method of a high-heat-generation electric shock curing concrete structure, which specifically comprises the following steps: mixing fine aggregate, a non-conductive nano material and a conductive nano material, and fully and uniformly stirring to obtain a dry material A; mixing the cementing material and the conductive filler, and fully and uniformly stirring to obtain a dry material B; mixing the dry material A and the dry material B, fully and uniformly stirring, adding water and a water reducing agent, and fully and uniformly stirring to obtain the non-conductive nano material modified concrete material; and preparing the non-conductive nano material modified concrete structure through electric excitation curing. The electric heating property development rule of the electric excitation curing concrete structure is fully considered, the heating efficiency of the concrete structure under the electric excitation curing effect can be remarkably improved by adding proper non-conductive nano materials into the structure, under the same power-on power, the curing temperature of the concrete with the high heating efficiency is higher, and the curing effect is better. The method is beneficial to development of mechanical properties and is suitable for rapid and high-quality construction of an electric excitation curing concrete structure.

The invention discloses a preparation method of an anti-stripping rubber asphalt mixture. The preparation method comprises the steps: putting an asphalt matrix, a softening agent and an activator into a reaction tank, performing gradient heating, performing stirring so as to obtain rubber asphalt, preparing an ethanol solution by using deionized water and anhydrous ethanol, then adding a coupling agent and a silicone water repellent, performing even stirring at room temperature so as to prepare an organic surface modifier, mixing cement and hydrated lime powder thoroughly in a stirrer at a ratio so as to prepare an inorganic modifier, performing continuous stirring on graded aggregate in a forced stirrer, spraying the organic surface modifier to the surface of the graded aggregate, performing drying, blending the dried mixture with the inorganic modifier so as to obtain comprehensive modified aggregate, and performing preparation on the rubber asphalt and the comprehensive modified aggregate according to a basic ratio of the asphalt mixture so as to obtain the anti-stripping rubber asphalt mixture. A surface modification technology is adopted to change the surface properties of a mineral material in the asphalt mixture, the adhesion between the asphalt and the mineral material is improved, and the service life of a road surface is prolonged.

The present invention discloses a method and an apparatus for flue gas desulfurization and sulfuric acid production. The method comprises that (1) flue gas is subjected to heat exchange through a sulfuric acid storage tank, and then the obtained flue gas enters a dust removing quenching tower and is subjected to primary dust removing cooling; (2) the cooled flue gas enters a desulfurization tower and sequentially passes through a deep dust removing unit, a desulfurization unit and a water washing unit from bottom to top; (3) in the water washing unit, the SOx in the flue gas is absorbed with fresh water, the liquid phase overflows and sequentially passes through the desulfurization unit and the deep dust removing unit, the obtained liquid phase enters the dust removing quenching tower to obtain a rich absorption liquid, solid-liquid separation is performed, and the gas phase is discharged in atmosphere after defogging; and (4) the rich absorption liquid being subjected to solid waste separation is discharged into an oxidation tank, the liquid phase enters a regeneration tower, the Fe<3+> / Fe<2+> in the liquid phase is removed, and the obtained liquid phase enters the sulfuric acid storage tank in the form of dilute sulfuric acid. With the method and the apparatus of the present invention, the SO2 in the flue gas can be absorbed and concentrated, and can be oxidized into the sulfuric acid so as to produce the high concentration sulfuric acid, the purified flue gas can meet the national or local relevant standard requirements, and the method and the apparatus are suitable for the recovery treatment of flue gas containing various concentrations of sulfur dioxide.

The invention discloses a poultry feces processing device. The multi-layer filter grids with meshes from large to small are sequentially arranged in the processing device from top to bottom, and the edges of the stirring paddles are set in a comb-like shape, effectively The poultry manure is cleaned of impurities, and the filter grid is not easy to be blocked, and the poultry manure to be treated can be stirred evenly. In addition, by introducing high-temperature steam into the treatment device from the steam circulation system, the poultry manure to be treated is fully contacted with the high-temperature steam, effectively achieves the purpose of high-temperature disinfection and sterilization, eliminates the hazards of poultry manure, and obtains green and efficient organic fertilizers , can obtain local materials and turn waste into treasure.

The invention relates to a waste incineration fly ash resourceful treatment process and system, and belongs to the field of environmental protection and solid waste treatment. The waste incineration fly ash resourceful treatment system comprises a primary hydrothermal reaction system, a secondary washing system and a salt separation system; the primary hydrothermal reaction system comprises a reaction kettle, a waste incineration power plant waste hot water pipeline, a fly ash and slag pipeline and an oxygen pipeline, and the waste incineration power plant waste hot water pipeline, the fly ash and slag pipeline and the oxygen pipeline are correspondingly communicate with the reaction kettle; the secondary washing system comprises a primary dehydration system, a secondary washing system and a secondary dehydration system, the primary dehydration system correspondingly communicates with the reaction kettle and the salt separation system, and the secondary dehydration system correspondingly communicates with the reaction kettle and a waste incineration power plant membrane treatment system through two pipelines. In-situ heat extraction (waste heat of the waste incineration power plant), local material utilization (incineration fly ash and slag) and in-situ treatment (treatment of secondary washing water by using the waste incineration power plant membrane system) are achieved, the treatment cost is reduced, and the treatment efficiency is improved. Heavy metal, dioxin and chloride ions are comprehensively treated, and resource utilization is achieved.

The invention discloses an ecological dam with a water purification function. The ecological dam comprises a main dam body which is provided with a water passing channel formed in the water flow direction; the water passing channel is internally provided with multiple water purification and collection devices which are communicated with one another in sequence through pipelines, and a drain pipe is arranged on the water purification and collection device farthest from a water receiving end and used for discharging purified water collected by all the water purification and collection devices toa water supply pipeline. The ecological dam is provided with multiple water purification devices capable of conducting purification on the spot, a unique water purification structure is formed, riverwater can be obtained from local sources, secondary utilization is achieved, the structural design is simple and practical, the dam is mainly adopts concrete for support, not only is the manufacturing cost lowered, but also water purification can be continuously and effectively conducted, convenience is brought to later maintenance, and the dam is more economical and practical.

The invention belongs to the technical field of garbage treatment, and in particular, relates to a method for landfill coverage by using deep-mineralized stale garbage compounding. Deep-mineralized stale garbage is used as fillers for day coverage and middle coverage of a landfill and closure repair coverage; the day coverage fillers are protecting layers, adjusting layers and stabilizing layers in sequence from top to bottom; the middle coverage fillers are anti-seepage layers and function adjusting layers paved in sequence from top to bottom; and the closure repair coverage fillers are vegetation layers, drainage layers, anti-seepage layers and exhaust layers in sequence from top to bottom. The physical and microorganism activity of deep-mineralized stale garbage humus and the hydraulicproperty are fully exerted to accelerate the biodegradation and stabilization progress of the landfill, so that the internal biodegradation environment of the landfill is effectively improved, and meanwhile, the ecological repair function of the landfill is improved. The deep-mineralized stale garbage humus can use local materials, so that the reduction and the recycling of solid wastes in the landfill are achieved, and the landfill operating cost can be saved.

The invention relates to a modified admixture suitable for low-quality aggregate concrete and a preparation method thereof. The modified admixture includes the following raw materials in parts by mass: 40% to 60% of polycarboxylate water reducer mother liquor, 25% of reinforcing agent % to 50%, thickener 2% to 8%, air entraining agent 0.1% to 0.4%, slump retaining agent 2% to 5%, antifungal agent 0.01% to 0.04%. On the premise of ensuring that the low-quality aggregate concrete is easy to construct and the strength is not reduced, the invention can reduce the amount of concrete glue by 8% to 10%, suppress the segregation and bleeding of the low-quality aggregate concrete mixture, and effectively solve the problem of solid structure surface Honeycomb, pockmarked surface, large area of ​​air bubbles, color difference and cracking and other appearance quality problems, realize the local procurement of raw materials for concrete engineering in remote areas.

The invention relates to the technical field of mechanical equipment maintenance, in particular to a mechanical-equipment high-voltage static disassembling-free oil way cleaning device and method. The device comprises pressure sensors, a stop valve, a pollution degree detection meter, a control system, a high-voltage static generator, a rough filtering tank, a balance electronic filtering tank, a pump and a high-pressure spraying nozzle and is characterized in that a filtering device is composed of the rough filtering tank and the balance electronic filtering tank, the pressure sensors are arranged on the rough filtering tank and the balance electronic filtering tank respectively and are connected with an input signal line of the control system through a signal line A, and an output signal line of the control system is connected with a signal input end of the high-voltage static generator. Compared with the prior art, the mechanical-equipment high-voltage static disassembling-free oil way cleaning device has the advantages that cleaning can be carried out without disassembling an oil way, the phenomenon that disassembling is needed to achieve cleaning of an oil way is avoided, and the device is portable and easy to operate, saves cost and improves production efficiency; due to the adoption of the electrostatic adsorption technology, the problem that secondary pollution is generated by oil products is thoroughly solved.

The invention belongs to the technical field of ecological environmental protection, desert sand and bulk solid waste resource utilization and saline-alkali soil treatment and utilization, and particularly relates to artificial soil for treating saline-alkali soil and a use method of the artificial soil. A guiding idea of changing'improvement 'into'treatment' is provided, various bulk coal-based solid wastes, desert sand, waste sandy soil and other various suitable materials are used for producing artificial soil with good quality through an artificial means, saline-alkali soil which is not suitable for plant growth is replaced or mixed with the saline-alkali soil, and a soil structure with planting capacity, water and fertilizer retention capacity and sufficient nutrient substances is formed. According to the technical route, planting profit of the upper artificial land is not delayed, meanwhile, the original saline-alkali soil on the lower portion is provided with the rest time, many difficulties and defects in the existing saline-alkali soil improvement process can be avoided, for example, the scale is small, and repeated salinization is prone to occurring. The saline-alkali soil treatment method can give consideration to solid waste treatment, ecological restoration and economic value-added benefits, and has a good application prospect.