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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 14. Отображено 14.
23-06-2023 дата публикации

Steel-concrete connection grouting material movable stirrer

Номер: CN116277484A
Автор: WANG HENG, WANG CHAO, LI WEI, ZHANG BIN, JIANG BIN, YIN HAIJUN, HU CHANGJUN, LI NING, WEI FENG, BAO JINYING, MING YANG, LI LING, CHEN PING, XIANG WEIHENG
Принадлежит:

The invention discloses a movable stirrer for reinforced concrete connection grouting materials, and belongs to the technical field of stirring, the movable stirrer comprises a stirring barrel for stirring the reinforced concrete connection grouting materials, the top end of the stirring barrel is connected with a barrel cover, the top end of the barrel cover is provided with a feeding channel, and the inner wall of the feeding channel is connected with a connecting frame through screws; a supporting rod used for supporting a steel-concrete connection grouting material bag is welded to the top end of the connecting frame, two lower linear motors are connected to the bottom end of the barrel cover, an assembly plate is welded to the bottom ends of moving parts of the two lower linear motors, and a plurality of lower electric push rods are connected to the side face of the assembly plate. The top end of the moving part of the lower electric push rod is connected with a bag cutter arranged ...

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Номер записи: 1
01-08-2023 дата публикации

High-strength lightweight gypsum prefabricated slab and preparation method thereof

Номер: CN116514511A
Автор: DUAN PENGXUAN, LI YING, HU CHENG, CHEN PING, XIANG WEIHENG
Принадлежит:

The invention discloses a high-strength lightweight gypsum prefabricated slab and a preparation method thereof. The method comprises the following steps: S1, preparing the following raw materials in parts by weight: 20-60 parts of alpha-hemihydrate phosphogypsum, 10-55 parts of aggregate, 5-15 parts of superfine composite powder, 2-8 parts of lime, 0.2-1.5 parts of a foaming agent, 0.3-2.0 parts of a polycarboxylic acid water reducer, 0.1-1.5 parts of hydroxyethyl modified starch ether, 0.02-0.3 part of a retarder and 20-33 parts of water; s2, sequentially adding a foaming agent, a polycarboxylic acid water reducer, hydroxyethyl modified starch ether and a retarder into water, and uniformly stirring to prepare a mixed solution; s3, carrying out dry mixing on the alpha-semi-hydrated phosphogypsum, the superfine composite powder, the aggregate and the lime; s4, adding the material prepared in the step S3 into the mixed solution, and carrying out wet mixing; and S5, carrying out semi-dry pressing ...

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Номер записи: 2
29-08-2023 дата публикации

Titanium gypsum-based cementing material, product and preparation method of titanium gypsum-based cementing material

Номер: CN116655342A
Автор: DUAN PENGXUAN, LI YING, HU CHENG, WEI JIAZHAN, CHEN PING, XIANG WEIHENG
Принадлежит:

The invention discloses a titanium gypsum-based cementing material, a product and a preparation method of the titanium gypsum-based cementing material. The titanium gypsum-based cementing material is prepared from the following raw materials in parts by weight: 40-70 parts of finely ground titanium gypsum, 15-40 parts of finely ground steel slag, 15-40 parts of aggregate, 0.5-3.0 parts of water glass, 0.1-2.0 parts of a polycarboxylic acid water reducer and 10-20 parts of water; s2, sequentially adding an additive water glass and a polycarboxylate superplasticizer into water, and stirring to obtain a mixed solution; s3, sequentially adding the finely-ground titanium gypsum, the finely-ground steel slag and the aggregate into stirring equipment, stirring to obtain a mixture, then adding the mixed solution obtained in the step S2 into the stirring equipment, and uniformly mixing and stirring the mixture and the mixed solution to obtain a mixed material; s4, carrying out pouring molding or ...

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Номер записи: 3
05-02-2014 дата публикации

High performance concrete with steel slag as admixture and aggregate and preparation method thereof

Номер: CN103553454A
Автор: CHEN PING, ZOU XIAOPING, LIU RONGJIN, ZHAO YANRONG, WEI JIAZHAN, LI ZHIBO, XIANG WEIHENG
Принадлежит:

The invention discloses a high performance concrete with steel slag as an admixture and aggregate and a preparation method thereof. The concrete is composed of a cementing material, aggregate, a water reducer and mixing water. The cementing material is prepared by compounding, by mass, 50 to 80% of cement, 10 to 30% of superfine steel slag powder and 10 to 30% of superfine mineral slag, wherein the specific surface areas of the superfine steel slag powder and the superfine mineral slag are respectively controlled to be 400 to 600 m<2>/kg and 400 to 500 m<2>/kg. The aggregate is composed of broken stone, steel slag sand and river sand, wherein the particle size of the steel slag sand is 5 to 10 mm, the steel slag sand is used to partially replace the broken stone, and the addition amount of the steel slag sand is 20 to 50%. The high efficiency water reducer is dissolved in water in advance and then added with the mixing water. The preparation method provided by the invention is simple and ...

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Номер записи: 4
28-07-2023 дата публикации

Low-cost preparation method of alpha semi-hydrated gypsum low-carbon product and product

Номер: CN116496060A
Автор: DUAN PENGXUAN, LI YING, HU CHENG, WEI JIAZHAN, CHEN PING, XIANG WEIHENG
Принадлежит:

The invention provides a low-cost preparation method of an alpha-semi-hydrated gypsum low-carbon product, which comprises the following steps: S1, grinding a raw material which is silica sand or smelting slag until the surface area is 220-600 m < 2 >/kg to obtain ground micro powder; s2, weighing the aggregate, the ground micro powder and the alpha-semi-hydrated gypsum according to the proportion; s3, pouring the materials weighed in the step S2 into stirring equipment, and stirring for 1-2 minutes at a low speed; s4, calculating a water-to-material ratio according to the water content of the aggregate, adding water, and stirring for 2-3 minutes to obtain a uniform mixture; s5, transferring the mixture obtained in the step S4 into a mold for dry pressing molding or extrusion molding; and S6, removing the mold of the product obtained in the step S5 within 20-30 minutes to obtain the alpha semi-hydrated gypsum low-carbon product. The low-cost preparation method of the alpha-semi-hydrated ...

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Номер записи: 5
29-08-2023 дата публикации

Red mud-based low-carbon environment-friendly product and preparation method thereof

Номер: CN116655347A
Автор: DUAN PENGXUAN, LI YING, WEI JIAZHAN, HU CHENG, CHEN PING, XIANG WEIHENG
Принадлежит:

The invention discloses a red-mud-based low-carbon environment-friendly product and a preparation method thereof. The preparation method comprises the following steps: S1, drying red mud, phosphogypsum and smelting slag raw materials, and grinding; s2, weighing the raw materials in parts by weight for later use; s3, additive preparation: adding an additive into water in proportion, and stirring for 5-15 minutes at the temperature of 25-45 DEG C to prepare an additive mixed solution; s4, stirring and mixing the red mud, the phosphogypsum, the smelting slag micro powder and the aggregate in proportion, then adding the additive mixed solution, and stirring to obtain a mixture; s5, performing pressure forming on the mixture obtained in the step S4, and removing the mold after compression forming to obtain a test block; s6, standing the obtained test block for 4 hours, then putting the test block into a rapid curing box for steam curing, heating the water to 90 DEG C at a constant speed, and ...

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Номер записи: 6
11-04-2023 дата публикации

High-adaptability superfine mineral admixture grinding-aid exciting agent and preparation method thereof

Номер: CN115947562A
Автор: MING YANG, LI LING, CHEN PING, XIANG WEIHENG, HU CHENG, LI QING, GAN GUOXING, PANGELIN
Принадлежит:

The invention discloses a high-adaptability superfine mineral admixture grinding-aid exciting agent, which is prepared from the following raw materials in parts by weight: 30 to 50 parts of triethanolamine, 25 to 30 parts of sulfate, 10 to 20 parts of calcium sulphoaluminate, 5 to 10 parts of lignosulfonate, 5 to 10 parts of gypsum, 5 to 10 parts of polyether ester of styrene-maleic anhydride copolymer resin, 1 to 5 parts of polyoxyethylene lauryl ether and 300 to 400 parts of water. The grinding aid activator can improve the specific surface area and activity of admixture grinding powder, and ensures the improvement of the mechanical properties of the ultra-high performance concrete; admixtures with different compositions and contents are ground, and good adaptability is achieved. A complex preparation process is not needed, control of reaction process parameters is omitted, and the preparation cost is greatly reduced.

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Номер записи: 7
09-05-2023 дата публикации

High viscosity reduction type polycarboxylate superplasticizer for ultra-high performance concrete and preparation method of high viscosity reduction type polycarboxylate superplasticizer

Номер: CN116082577A
Автор: MING YANG, LI LING, CHEN PING, XIANG WEIHENG, HU CHENG, LI QING, GAN GUOXING, PANGELIN
Принадлежит:

The invention discloses a high viscosity reduction type polycarboxylate superplasticizer for ultra-high performance concrete and a preparation method thereof, and the preparation method comprises the following steps: adding metered deionized water into a reaction container, then respectively adding methyl allyl polyoxyethylene ether, sodium methallyl sulfonate, alkyl acrylate and styrene, stirring and heating; adding metered hydrogen peroxide, dropwise adding a mixed aqueous solution of acrylic acid AA and methoxyl macrogol methacrylate MAA-MPEG and a mixed aqueous solution of mercaptoacetic acid and ascorbic acid at the same time, and keeping the temperature after dropwise adding; the dispersity of the prepared polycarboxylic acid water reducer can be improved, the hydrophilicity of the whole polycarboxylic acid molecule is reduced, and the effect of reducing the viscosity of concrete is obvious; on the premise that the concrete has good workability, the viscosity of the high-grade concrete ...

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Номер записи: 8
09-05-2023 дата публикации

Preparation method of ultrafine micro-nano-scale active admixture and chained grouting material

Номер: CN116081972A
Автор: MING YANG, LI LING, CHEN XUANDONG, XIANG WEIHENG, HU CHENG, LI QING, CHEN PING, GAN GUOXING
Принадлежит:

The invention provides a preparation method of an ultrafine micro-nano-scale active admixture and a chained grouting material, and the chained grouting material comprises the following components in percentage by mass: 25%-38% of cement, 5%-14% of glass beads, 2%-5% of silica fume, 5%-20% of the ultrafine micro-nano-scale active admixture, 2%-5% of high-strength fibers, 0.1%-1% of toughening fibers and 0.2%-0.4% of a polycarboxylate superplasticizer. 0%-0.02% of a defoaming agent, 0%-0.04% of a foaming agent, 28%-42% of river sand and 12%-18% of ground river sand; according to the invention, a compound of ordinary Portland cement, industrial gypsum and calcium bicarbonate is added together as an active activator of the mineral admixture, and the active activator and the high efficiency water reducer act together to excite the activity of the mineral admixture, so that active components of fly ash and slag powder in the mineral admixture are fully excited; various pores formed in the hardening ...

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Номер записи: 9
10-09-2014 дата публикации

Manufacturing method of rotary-cutting device for high-viscosity polymer gel

Номер: CN104028962A
Автор: LIU RONGJIN, CHEN JUN, CHEN PING, ZHAO YANRONG, WEI JIAZHAN, XIANG WEIHENG, ZHOU RUIZHE
Принадлежит:

The invention discloses a manufacturing method of a rotary-cutting device for high-viscosity polymer gel. The manufacturing method includes steps of (1) manufacturing a connecting rod, two to four concave vanes and an electric driver, wherein the upper end of the connecting rod is shaped in a hexagonal prism, the connecting rod is 8-10mm in outer diameter and 350-450mm in length, the concave vanes are identical in specifications, 120-150mm in unfolding length, 20mm in width and 1.5 in thickness, the concave vanes are upwardly or downwardly bent from the position away from the center by 1/2-3/5, and each bending angle ranges from 30 degrees to 60 degrees; (2) crossly welding the 2 to 4 concave vanes to form a stacked concave vane, wherein the two ends of the concave vanes when the concave vanes are stacked are upwardly bent, or downwardly bent or some are upwardly bent and some are downwardly bent, and the lower end of the connecting rod is fixed at the centers of the concave vanes through ...

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Номер записи: 10
07-04-2023 дата публикации

High-strength anti-fatigue load steel-concrete connection grouting material and preparation method thereof

Номер: CN115925350A
Автор: WANG HENG, WANG CHAO, LI WEI, ZHANG BIN, JIANG BIN, YIN HAIJUN, HU CHANGJUN, LI NING, HE SUYUAN, BAO JINYING, MING YANG, LI LING, CHEN PING, XIANG WEIHENG
Принадлежит:

The invention discloses a high-strength anti-fatigue load steel-concrete connection grouting material and a preparation method thereof. Comprising the following components in parts by weight: 30-50 parts of cement, 30-40 parts of river sand, 20-30 parts of silica fume, 15-30 parts of a superfine admixture, 1-5 parts of high-strength fibers, 1-5 parts of toughening fibers, 1-5 parts of an alkylphenol formaldehyde resin alkylene oxide adduct, 0.05-0.1 part of a chloride ion adsorbent, 0.5-3 parts of an early strength agent, 5-10 parts of a composite expanding agent, 0.5-3 parts of a retarder, 0.5-1 part of a corrosion inhibitor, 0.05-1 part of a naphthalene sulfonic acid water reducer and 10-15 parts of water. The high-strength anti-fatigue load steel-concrete connection grouting material is obtained, construction application with high requirements can be met, high-cost imported products do not need to be used, the construction cost is greatly reduced, and bleeding and plastic shrinkage are ...

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Номер записи: 11
28-05-2014 дата публикации

Preparation method for alkali capacitive and high water-holding concrete internal curing material

Номер: CN103819614A
Автор: LIU RONGJIN, CHEN PING, XIANG WEIHENG, DING QINGJUN, ZHAO YANRONG, WEI JIAZHAN, ZHOU RUIZHE, CHEN JUN
Принадлежит:

The invention discloses a preparation method for an alkali capacitive and high water-holding concrete internal curing material. Preparation raw materials comprise, by mass, 2%-20% of plant starch, 5%-30% of non-ionic monomers, 3%-25% of ionic monomers, 0.001%-0.1% of an initiator, 0.01%-1% of a cross-linking agent, 0.1%-1% of water glass, 2%-10% of alkali and 60%-90% of deionized water. The alkali capacitive and high water-holding concrete internal curing material is prepared by subjecting the above raw materials to a water solution method. The preparation method takes the plant starch as a raw material. The plant starch is widely available, cheap and degradable, and meets requirements of environment protection. A prepared internal curing agent has good construction property, does not have problems of aggregate buoyancy and segregation during a concrete stirring process of light aggregate. The prepared internal curing agent can replace a conventional internal curing material, and achieve ...

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Номер записи: 12
18-04-2023 дата публикации

Metro shield foaming agent and preparation method thereof

Номер: CN115975612A
Автор: LI LING, MING YANG, CHEN PING, GAN GUOXING, PANGELIN, XIANG WEIHENG, HU CHENG, LI QING, XIAO DUNKAI, WANG PENGHUAI
Принадлежит:

The invention discloses a foaming agent for a subway shield. The cleaning agent is prepared from the following raw materials: 5-10% of an alpha-olefin sulfonate surfactant, 5-10% of cocamidopropyl betaine, 2-6% of hexadecyl trimethyl ammonium chloride, 1-5% of sodium myristoyl sarcosinate, 1-5% of a lauric acid imidazoline quaternary ammonium salt ampholytic surfactant, 0.5-1% of polyacrylamide and the balance of water. The subway shield foaming agent prepared by the invention has the viscosity of 0.6-1.4 Pa.s at 25 DEG C, the half-life period of 35-45 minutes and the foaming ratio of 24-28 times, and has excellent foaming capacity and foaming stability; the cutting fluid can effectively improve the flowability and watertightness of a soil body, has good lubricity to a cutterhead, can significantly reduce the torque of the cutterhead, greatly improves the tunneling speed, and prolongs the service life of the cutterhead.

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Номер записи: 13
12-03-2014 дата публикации

Dry-mixed mortar prepared from hot furnace slag and preparation method of dry-mixed mortar

Номер: CN103626440A
Автор: CHEN PING, ZOU XIAOPING, LIU RONGJIN, WEI JIAZHAN, ZHAO YANRONG, XIANG WEIHENG, JIANG HAN
Принадлежит:

The invention discloses dry-mixed mortar prepared from hot furnace slag and a preparation method of the dry-mixed mortar. The dry-mixed mortar comprises the following components in parts by mass: 200-750 parts of an inorganic cementitious material, 280-900 parts of medium sand, 500-1220 parts of hot furnace slag sand and 2-7.5 parts of an additive, wherein the inorganic cementitious material comprises the following components in percentage by mass: 50-65% of cement, 25-30% of hot furnace slag power, 5-10% of blast furnace slag fine powder and 5-10% of limestone fine powder; the additive is cellulose; the hot furnace slag is nickel ore smelting slag; after the hot furnace slag is sieved, the hot furnace slag with the particle sizes of 0.6-2.36 mm is the hot furnace slag sand. All the components are measured according to the formula, and then mixed and stirred to obtain the dry-mixed mortar. According to the preparation method, the process is simple; dry-mixed mortar with the grade of M5- ...

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Номер записи: 14