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32results about How to "Increase plastic viscosity" patented technology
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Methods and Materials to Enhance High Temperature Rheology in Invert Emulsions
ActiveUS20130303411A1Quantity minimizationLow pour pointFlushingDrilling compositionOrganic acidEmulsion
An invert emulsion drilling fluid, and a method of drilling with such fluid, having improved rheology at low mud weights and high temperatures. The improved rheology is effected with addition of a rheology additive of the invention comprising fatty dimer diamines or dimer diamines and an organic acid or ester of the acid. A nonlimiting example of such a rheology additive comprises a C36 fatty dimer diamine and adipic acid or dimethyl adipate.
Owner:HALLIBURTON ENERGY SERVICES INC
Low cementitious material self-compacting concrete
ActiveCN102060481AIncrease plastic viscosityIncrease the slurry-solid ratioHigh strength concreteSelf-consolidating concrete
The invention discloses low cementitious material self-compacting concrete. Cement is a main raw material in a cementitious material of the self-compacting concrete; and if the cement consumption is high, overhigh concrete shrinkage is easily caused due to overhigh hydration heat of the cement, which is unfavorable for concrete crack control and concrete durability improvement, and problems such as disintegration, bleeding and the like easily occur. An additive XAMC is added into the concrete formula and can adsorb onto surfaces of particles to form a close adsorption layer so as to prevent the particles from flocculating and aggregating to realize the dispersion and stabilization function. Water-washing superfine sand which is rich in resources replaces partial mineral admixture, the low cementitious material self-compacting concrete can meet the basic requirement of high strength concrete by adding the XAMC under the condition of reducing cement consumption, and has obvious thickening and water retaining functions; concrete mixtures do not bleed or disintegrate, the homogenization and workability of the concrete are improved, and the concrete has important significance for saving energy and reducing emission.
Owner:北京元泰达环保科技有限公司
Thickener used for self-compact concrete, preparation method thereof, and self-compact concrete using thickener
The invention discloses a preparation method of a thickener used for self-compact concrete. The method comprises the following steps: 1, weighing 2-acrylamide-2-methylpropanesulfonic acid and acrylic acid in proportion, processing to prepare an aqueous solution, and adjusting the pH value to 6.5-7.0; 2, adding a prepared monomer acrylamide solution with the concentration of 25-35% while stirring, uniformly stirring, dumping the obtained mixed solution into a flask, carrying out constant temperature water bath, and introducing nitrogen for protection; and 3, adding an initiator in a dropwise manner when the reaction temperature rises to 30-40DEG C, carrying out heat insulation at 40DEG C, carrying out a stirring reaction for about 1.5-2h, stopping the introduction of nitrogen when reactants are a viscous liquid, and carrying out constant temperature slaking for a period of time to obtain a white transparent colloid which is the thickener. The thickener obtained in the invention is used for preparing the self-compact concrete, has a good water solubility and a good thickening effect, can effectively improve the plastic viscosity of the self-compact concrete, and solves the water segregation and separation problems of the self-compact concrete.
Owner:CCCC FOURTH HARBOR ENG INST +4
Anti-impact cement-based paste grout and preparation method thereof
The invention discloses anti-impact cement-based paste grout and a preparation method thereof. The anti-impact cement-based paste grout is prepared from sulphoaluminate cement, water, a polysaccharide organic polymer flocculant, hydroxypropyl methyl cellulose, calcium chloride, sodium aluminate, lime, alkali, alum, sodium silicate and sodium polyacrylate. The anti-impact cement-based paste grout and the preparation method thereof have advantages of great improvement of grout performances, enhancement of resistance of the grout to flushing of flowing water, shortening of grout coagulation time, improvement of leakage stopping effects, simplification of construction process and protection of the natural environment.
Owner:SINOHYDRO FOUND ENG
A viscosity modifying material specially used for self-compacting concrete for CRTSIII type plates
A preparing method of a viscosity modifying material specially used for self-compacting concrete for CRTSIII type plates is disclosed. The viscosity modifying material is prepared by fully mixing fumed silica, calcium carbonate, low-viscosity hydroxyethyl cellulose, high-viscosity hydroxyethyl cellulose, a thixotropy modifier and water-soluble polymer rubber powder. The viscosity modifying material comprises 45-55% by mass of the fumed silica, 43-55% by mass of nanometer calcium carbonate, 0-0.5% by mass of the low-viscosity hydroxyethyl cellulose, 0-0.5% by mass of the high-viscosity hydroxyethyl cellulose, 0-2% by mass of the thixotropy modifier and 2-4% by mass of the water-soluble polymer rubber powder.
Owner:ANHUI ZHONGTIE ENGINEER MATERIAL SCI & TECH CO LTD +1
Polyphosphate glasses as a plasticizer for nylon
InactiveUS20070290405A1Eliminating intractable viscosityImprove propertiesLayered productsPolyamidePhosphate glass
The present invention discloses the miscibility of inorganic phosphate glass and organic polymer prepared by blending both components in the liquid phase using conventional polymer processing methods. By utilizing low Tg phosphate glasses to plasticize nylon, e.g. polyamide 6, a new class of plasticizer is introduced that allows for the creation of unique nylon polymer composites. These materials display tunable morphologies, interesting properties, and significant reduction in flammability, while easing the processing of nylon through a substantial reduction of viscosity. The addition of a low Tg phosphate glass in small amounts (less than 10% by volume) to a nylon matrix results in a drastic reduction in viscosity and a decrease in the nylon glass transition temperature and flammability, with the capability of adding a low Tg phosphate glass up to 60% by volume. The observed mechanical properties of the nylon / phosphate glass hybrid are consistent with that of plasticized polymers.
Owner:UNIVERSITY OF SOUTHERN MISSISSIPPI
Recycled self-compacting concrete and preparation method thereof
The invention discloses recycled self-compacting concrete and a preparation method thereof. The recycled self-compacting concrete comprises the following components in parts by weight: 220 to 260 parts of cement, 160 to 190 parts of water, 780 to 800 parts of broken stone, 150 to 158 parts of a recycled material, 80 to 85 parts of mineral powder, 10 to 14 parts of an expanding agent, 720 to 750 parts of sand, 3 to 7 parts of a water reducer, 2 to 10 parts of a viscosity modifier and 110 to 117 parts of coal ash; and the recycled material comprises the following components in parts by weight: 20 to 40 parts of iron tailings, 10 to 20 parts of building waste and 20 to 30 parts of steel slag powder. The recycled self-compacting concrete disclosed by the invention has the advantages of high flowing property, filling property and segregation resistance, and the wastes of steel slag and iron tailings are utilized sufficiently.
Owner:西安新意达建筑制品有限公司
Preparation method of garbage incineration power generation furnace slag concrete
The invention discloses a preparation method of garbage incineration power generation furnace slag concrete. According to the method, during a concrete preparation process, acrylic resin is added in two batches, magnetized water is added in three batches, and stirring is carried out four times. A construction material is prepared with garbage furnace slag, such that a resource is effectively recovered and utilized. The method is simple; preparation efficiency is high; and the production process is environment friendly. Through adjusting the ratio, concrete products with different strength grades can be obtained. The finally obtained concrete has the advantages of sufficient and fine mixing, good compressive strength, good water resistance, high stability, and good comprehensive performance.
Owner:山东环兴再生资源科技有限公司
Methods and materials to enhance high temperature rheology in invert emulsions
ActiveUS9346995B2Quantity minimizationLow pour pointFlushingDrilling compositionOrganic acidEmulsion
An invert emulsion drilling fluid, and a method of drilling with such fluid, having improved rheology at low mud weights and high temperatures. The improved rheology is effected with addition of a rheology additive of the invention comprising fatty dimer diamines or dimer diamines and an organic acid or ester of the acid. A nonlimiting example of such a rheology additive comprises a C36 fatty dimer diamine and adipic acid or dimethyl adipate.
Owner:HALLIBURTON ENERGY SERVICES INC
Isocyanate chain extension modified polycarboxylic acid water reducing agent and preparation method thereof
The invention discloses an isocyanate chain extension modified polycarboxylic acid water reducing agent and a preparation method thereof, and belongs to the field of cement additives. A chain extender is mixed together with a chain transfer agent and a reducing agent to serve as an initiator, and isocyanate and acrylic acid serve as a small monomer solution to assist the initiator which is synchronously added in drops by a gradual drop adding manner to be reacted with a macromonomer at the bottom of a reaction vessel. According to the invention, chain extenders of alcohol and amine compounds of low molecular weight polyfunctional groups containing hydroxyl groups or amino groups by introducing isocyanate to polycarboxylic acid molecular main chains are synthesized, and polymerized at the end group of isocyanate to increase the number of short branched chains, so that polyether long branched chains and the short branched chains of the chain extenders of the alcohol and amine compounds are promoted to be distributed alternately to increase dispersion and adaptability of the water reducing agent. The modified polycarboxylic acid water reducing agent obviously improves the dispersion property of cement, and then slightly increases slump loss resistant property, compressive strength and impermeability.
Owner:HAINAN TAIHOO TECH CO LTD
Oil well drilling fluids, oil well cement composition and slurry of weighting material
ActiveUS20140155302A1Promote circulationImprove liquiditySolid waste managementDrilling compositionFiberParticulates
The present invention relates to oil well drilling comprising a weighting agent consisting of microfine, particulate ilmenite having a FeTiO3 content of at least 85% by weight, a specific surface area (BET) between 1 and 5 m2 / g, where 90% by volume of the particles have a size of less than 12.5 μm and a D50 between 3 μm and 6 μm by volume measured by laser diffraction using Malvern laser diffraction particle size analyzer, where the particles have an average circularity of at least 0.85 determined by image analysis. The invention further relates to high density oil well cement slurry comprising water, Portland cement, a weighting material and optionally silica flour, microsilica, fiber, rubbery particles a fluid loss addition and a retarder, where the weighting material is particulate microfine ilmenite having a FeTiO3 content of at least 85% by weight, a specific surface area (BET) between 1 and 5 m2 / g, and where 90% by volume of the particles have a size of less than 12.5 μm and a D50 between 3 and 6 μm measured by laser diffraction using Malvern laser diffraction particle size analyzer, and where the particles have an average circularity of at least 0.85 determined by image analysis. Finally, the invention relates to a slurry of microfine ilmenite.
Owner:ELKEM
Fiber-reinforced concrete material and preparation method thereof
The invention provides a fiber-reinforced concrete material and a preparation method thereof, and relates to the technical field of concrete materials. The fiber-reinforced concrete material is prepared from the following raw materials: modified bentonite, layered hypophosphite, silicate cement, a fiber material, steel fiber, boric acid, a reinforcing agent, an organic thickening agent and water.The fiber-reinforced concrete material provided by the invention is good in corrosion resistance, strong in sealing property, long in service life, good in strength and good in impact resistance; thebonding of the modified bentonite and the layered hypophosphite with a silicate cement matrix is good, and in the cement matrix, the modified bentonite and the layered hypophosphite are uniformly distributed and are good in dispersity; after the modified bentonite, the layered hypophosphite and the silicate cement are added to prepare the concrete material, the prepared concrete material is high in strength and good in heat stability; by embedding of the fiber material and the steel fiber into a silicate cement matrix, the comprehensive dynamic and mechanical properties such as impact resistance, anti-freezing property and durability of the concrete material are enhanced.
Owner:ANHUI YUTE CONCRETE STRUCTURE TECH
Machine-made sand conditioning agent
InactiveCN110950571AImprove adaptabilityAvoid slag and other phenomenaFirming agentStructural engineering
The invention relates to the technical field of buildings, and discloses a machine-made sand conditioning agent which can be freely prepared by a user according to requirements by separately preparingmultiple conditioning agents and then combining the multiple conditioning agents, so that the machine-made sand conditioning agent adapting to the environment is prepared, and the machine-made sand conditioning agent has good adaptability and practicability; coal tar, furfural, a curing agent and other materials are added into epoxy resin, so that the phenomenon that the whole concrete binder isdried and the binding degree of the concrete binder is reduced after the cement is dried along with time due to addition of the cement is avoided, the phenomena of concrete slag falling and the like are avoided, and meanwhile, when new concrete and old concrete are bound, the binding strength of the concrete binder is improved. A thickening agent is arranged, so that when self-compacting concreteis prepared, the water solubility of the self-compacting concrete is good, the thickening effect of the self-compacting concrete is good, the plastic viscosity of the self-compacting concrete can be effectively improved, and the problems of bleeding and segregation of the self-compacting concrete are solved.
Owner:深圳市君辰装饰设计工程有限公司
Self-compacting concrete and preparation method thereof
The invention discloses self-compacting concrete and a preparation method thereof. The self-compacting concrete is prepared from components in parts by weight as follows: 1 part of cement, 0.4-0.5 parts of water, 2.0-2.2 parts of sand, 2.45-2.6 parts of stone, 0.25-0.4 parts of fly ash, 0.08-0.11 parts of an expanding agent and 0.010-0.016 parts of an additive. During preparation, 1) raw materialstone is thoroughly cleaned and piled under the condition that the stone is wet and contains no open water, and powder is required to be stored in a storage for at least 3 days; 2) the additive is added to water to be mixed for later use, sand and stone are put in a stirrer to be stirred, and the powder is put in the stirrer to be mixed with the sand and stone; finally, a mixed liquid of the additive and the water is added to the stirrer to be mixed to obtain the self-compacting concrete. The concrete obtained by the formula has good fluidity, materials are easy to obtain locally, and the concrete has small shrinkage, has the 28 d compressive strength up to 49.4 Mpa or above, can completely meet C40 high-strength structure concrete and can be applied to concrete reinforcement, strengthening and rebar dense areas and structural construction difficult and even unable to pour in industrial, civil and municipal engineering.
Owner:宜昌鑫大兴混凝土有限公司
Pebble stratum deep and large foundation pit underground diaphragm wall retaining wall slurry and preparation method thereof
ActiveCN110066661AWall protection effect is goodImprove recycling ratesBuilding constructionsOrganic fertilisersSlurry wallMaterial consumption
The invention relates to the field of building construction, and provides pebble stratum deep and large foundation pit underground diaphragm wall retaining wall slurry. The pebble stratum deep and large foundation pit underground diaphragm wall retaining wall slurry is prepared from, by weight, 1,000 parts of water, 75-85 parts of bentonite, 3-5 parts of sodium carbonate and 0.5-1.5 parts of sodium polyacrylate. The invention further provides a preparation method of the pebble stratum deep and large foundation pit underground diaphragm wall retaining wall slurry. The pebble stratum deep and large foundation pit underground diaphragm wall retaining wall slurry has the advantages that sodium polyacrylate is adopted for replacing traditional CMC, the slurry wall protecting performance and theslurry recycling rate are greatly increased, and meanwhile corresponding environment contamination and material consumption are reduced; meanwhile, various indexes of the slurry prepared through theformula can meet the requirement of circulating slurry indexes, the wall protecting effect is good, and the groove wall stability is good.
Owner:CHINA TIESIJU CIVIL ENG GRP CO LTD
Acryloylmorpholine polymer and use thereof and filtrate reducer for drilling fluid
ActiveUS20140080985A1Outstanding filtrate reduction performanceGood viscosity increasing effectDrilling compositionReducerStructural unit
The present invention provides an acryloylmorpholine polymer and the use thereof and a filtrate reducer for drilling fluid. The acryloylmorpholine polymer comprises structural units expressed by formula (1), structural units expressed by formula (2), and structural units expressed by formula (3), wherein, at least a part of the structural units expressed by formula (2) can be bonded with at least a part of the structural units expressed by formula (3) into cross-linked structural unit expressed by formula (4); wherein, R1-R9 are H or C1-C3 linear or branched alkyl respectively, y is an integer within 1-5 range, M is H or an alkali metal element, X is O or NH, and R10 is C1-C5 linear or branched alkylidene. The acryloylmorpholine polymer and filtrate reducer for drilling fluid have outstanding filtrate reduction and viscosity increasing effects.
Owner:CHINA PETROCHEMICAL CORP +1
A coloring agent suitable for 3D printing white cement-based materials and its use and application
The invention belongs to the technical field of building materials, and in particular relates to a colorant suitable for 3D printing white cement-based materials and its use method and application. In parts by weight, the colorant is compounded from the following components: 1-5 parts of coupling agent, 5-30 parts of polymer emulsion, 5-30 parts of resin, 10-40 parts of mineral admixture, pigment 5-25 parts, 5-30 parts coagulant, 2-9 parts water reducer, 0.05-1.10 parts defoamer, 95-120 parts water. The coloring agent proposed by the present invention has good colorability, weather resistance, pan-alkali resistance, plastic viscosity, yield stress, fast and stable setting time, and the printed object has a low deformation rate, etc., which can well meet the requirements of 3D printing needs of white cement-based materials.
Owner:UNIV OF JINAN
Viscosity modifier for controlling bleeding of concrete by utilization of high-molecular-weight polycarboxylic acid and application thereof
The invention discloses a viscosity modifier for controlling bleeding of concrete by the utilization of high-molecular-weight polycarboxylic acid. The viscosity modifier is mainly formed by compounding high-molecular-weight polycarboxylic acid and common-molecular-weight polycarboxylic acid. The molecular weight of the high-molecular-weight polycarboxylic acid is 600-2000 thousand, and the molecular weight of the common-molecular-weight polycarboxylic acid is 200-700 thousand. In the viscosity modifier, solid content of the common-molecular-weight polycarboxylic acid is 6-20%, and the high-molecular-weight polycarboxylic acid accounts for 1-20%. The viscosity modifier can be effectively applied to manufacturing of concrete of C50 and above (including C50, C55, C60, C70 and C80) and the above premixed concrete. By directly compounding of 1-20% high-molecular-weight polycarboxylic acid and common-molecular-weight polycarboxylic acid and without influencing water-reducing rate and antisag property, viscosity of the premixed concrete is effectively enhanced, and bleeding and segregation are controlled. In addition, the problem of compatibility between traditional VMA and a polycarboxylate superplasticizer is fundamentally solved.
Owner:WUXI KINGSTON NEW MATERIAL TECH CO LTD
Steel-carbon mixed fibre concrete material and preparation method thereof
The invention provides a steel-carbon mixed fibre concrete material and a preparation method thereof, and relates to the technical field of concrete materials. The steel-carbon mixed fibre concrete material provided by the invention is prepared from the following raw materials: calcium bentonite, nano-scale calcium carbonate, fine aggregate, coarse aggregate, steel slag, carbon fibres, a reinforcing agent, an organic thickening agent and water. The steel-carbon mixed fibre concrete material disclosed by the invention is good in corrosion resistance, good in sealing property, long in service life, high in strength, and good in impact resistance; the organic thickening agent serving as a raw material can effectively improve the plastic viscosity of fresh concrete, improve the segregation andweeping resistance of the concrete, fully utilize the bubble stabilizing characteristic of the organic thickening agent, and effectively control the bubble stability of the fresh concrete; the calcium bentonite forms colloid in the water, so that the plastic viscosity of the fresh concrete can be effectively improved; therefore, the comprehensive performance of the steel-carbon mixed fibre concrete material is improved.
Owner:ANHUI YUTE CONCRETE STRUCTURE TECH
Regenerated powder doped 3D printing engineering spoil printing ink material based on spoil autocompounding technology and preparation method of regenerated powder doped 3D printing engineering spoil printing ink material
ActiveCN114853402AGood extrudabilityImprove plasticity indexAdditive manufacturing apparatusSolid waste management3d printConstruction engineering
The invention provides a 3D printing engineering spoil ink material doped with regenerated powder based on a spoil autocompounding technology. The invention further provides a preparation method and application of the 3D printing engineering spoil ink material doped with the regenerated powder based on the spoil autocompounding technology and a 3D printing forming method. According to the 3D printing engineering spoil ink material doped with the regenerated powder based on the spoil autocompounding technology and the preparation method, engineering spoil resources of different types are fully utilized for autocompounding, the activity of the regenerated powder and the 3D printing in-situ construction advantages are combined, the problem that a large number of spoil resources cannot be effectively utilized is solved, and the 3D printing engineering spoil ink material is suitable for industrial production. And the method has the advantages of low carbon, environmental protection, rapid construction and the like, is beneficial to the sustainable development requirement and industrial development trend of engineering, provides a certain application foundation for the carbon reduction requirement of the construction industry, and has relatively high economic benefits and social values.
Owner:TONGJI UNIV
A kind of 3D printing white cement-based material and its use method and application
ActiveCN110028299BImprove toughnessImprove early strengthAdditive manufacturing apparatusFiberLiquid state
Owner:UNIV OF JINAN
Thickener for self-compacting concrete, preparation method thereof and self-compacting concrete using the thickener
Owner:CCCC FOURTH HARBOR ENG INST +4
Oil well drilling fluids, oil well cement composition and slurry of weighting material
ActiveUS8962537B2Promote circulationImprove liquiditySolid waste managementFlushingParticulatesFiber
The present invention relates to oil well drilling comprising a weighting agent consisting of microfine, particulate ilmenite having a FeTiO3 content of at least 85% by weight, a specific surface area (BET) between 1 and 5 m2 / g, where 90% by volume of the particles have a size of less than 12.5 μm and a D50 between 3 μm and 6 μm by volume measured by laser diffraction using Malvern laser diffraction particle size analyzer, where the particles have an average circularity of at least 0.85 determined by image analysis. The invention further relates to high density oil well cement slurry comprising water, Portland cement, a to weighting material and optionally silica flour, microsilica, fiber, rubbery particles a fluid loss addition and a retarder, where the weighting material is particulate microfine ilmenite having a FeTiO3 content of at least 85% by weight, a specific surface area (BET) between 1 and 5 m2 / g, and where 90% by volume of the particles have a size of less than 12.5 μm and a D50 between 3 and 6 μm measured by laser diffraction using Malvern laser diffraction particle size analyzer, and where the particles have an average circularity of at least 0.85 determined by image analysis. Finally, the invention relates to a slurry of microfine ilmenite.
Owner:ELKEM
Low-density cement used for well cementation
InactiveCN108395154AImprove performanceImprove early strengthDrilling compositionHorizontal wellsVolumetric Mass Density
The invention provides low-density cement used for well cementation. The low-density cement comprises the following components in percentages by mass: 5%-8% of high-strength microbeads, 2%-7% of floating beads, 2%-3% of perlite, 55%-70% of oil wells G-grade cement, 8%-12% of silica fume, 3%-9% of fly ash, 2% of a fluid loss agent, 2%-3% of a stabilizer, 1% of an expanding agent, 0.6%-0.75% of an early strength agent, and 0.25%-0.4% of a drag reducer. The low-density cement slurry used for the well cementation provided by the invention has high high-temperature stability, a constant high-pressure density and high early strength, has higher plastic viscosity, dynamic shearing force and thixotropy at high temperature, and is suitable for a well cementing process of high-yield oil wells, gas wells, deep wells, ultra-deep wells, horizontal wells and other wells with higher requirements.
Owner:宁夏亿昀特种工程材料有限公司
Rheology modifier for organoclay-free invert emulsion drilling fluid systems
ActiveUS11072736B2Increase drilling costIncrease plastic viscosityFlushingDrilling compositionPolymer chemistryOrganoclay
Invert emulsion drilling fluids having a combination of fatty acids derived from waste vegetable oil (WVO) and a fatty amine as a rheology modifier are provided. An invert emulsion drilling fluid may include a water in oil emulsion, an invert emulsifier, a fatty amine having six to thirty carbon atoms, and a fatty acid having six to eighteen carbon atoms. The fatty acid is provided by esterifying a waste vegetable oil to produce a methyl ester of the waste vegetable oil and cleaving an ester group from the methyl ester of the waste vegetable oil. The invert emulsion drilling fluid may be formulated free of organoclay. Methods of drilling a wellbore using an invert emulsion drilling fluid are also provided.
Owner:SAUDI ARABIAN OIL CO
A kind of isocyanate chain extension modified polycarboxylate water reducing agent and preparation method thereof
The invention discloses an isocyanate chain extension modified polycarboxylic acid water reducing agent and a preparation method thereof, and belongs to the field of cement additives. A chain extender is mixed together with a chain transfer agent and a reducing agent to serve as an initiator, and isocyanate and acrylic acid serve as a small monomer solution to assist the initiator which is synchronously added in drops by a gradual drop adding manner to be reacted with a macromonomer at the bottom of a reaction vessel. According to the invention, chain extenders of alcohol and amine compounds of low molecular weight polyfunctional groups containing hydroxyl groups or amino groups by introducing isocyanate to polycarboxylic acid molecular main chains are synthesized, and polymerized at the end group of isocyanate to increase the number of short branched chains, so that polyether long branched chains and the short branched chains of the chain extenders of the alcohol and amine compounds are promoted to be distributed alternately to increase dispersion and adaptability of the water reducing agent. The modified polycarboxylic acid water reducing agent obviously improves the dispersion property of cement, and then slightly increases slump loss resistant property, compressive strength and impermeability.
Owner:HAINAN TAIHOO TECH CO LTD
A kind of retaining wall mud for underground diaphragm wall of deep and large foundation pit in round gravel formation and its configuration method
ActiveCN110066661BIncrease plastic viscosityIncrease dynamic shear forceBuilding constructionsOrganic fertilisersPolypropylenePollution
The invention relates to the field of building construction, and provides a mud for retaining wall of an underground diaphragm wall of a deep and large foundation pit in a round boulder formation, which comprises the following raw materials in parts by weight: 1000 parts of water, 75-85 parts of bentonite, 3-5 parts of soda ash, and polyacrylic acid Sodium 0.5‑1.5 parts. The invention also provides a method for configuring the slurry for the retaining wall of the underground diaphragm wall of the deep and large foundation pit in the round gravel formation. The advantage of the present invention is that: the present invention adopts sodium polyacrylate to replace traditional CMC, and its slurry retaining wall performance and slurry recycling rate will be greatly improved, and at the same time, corresponding environmental pollution and material consumption are reduced; at the same time, it is prepared according to the formula of the present invention The various indexes of the obtained mud can meet the requirements of the circulating mud index, the effect of wall protection is good, and the stability of the groove wall is good.
Owner:CHINA TIESIJU CIVIL ENG GRP CO LTD
Organic-inorganic composite oil displacement agent, organic-inorganic composite oil displacement system, preparation method and application thereof
ActiveCN108841368BIncrease plastic viscosityLow environmental sensitivityDrilling compositionNanoparticleInorganic compound
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Preparation method of waste incineration power plant slag concrete
The invention discloses a preparation method of garbage incineration power generation furnace slag concrete. According to the method, during a concrete preparation process, acrylic resin is added in two batches, magnetized water is added in three batches, and stirring is carried out four times. A construction material is prepared with garbage furnace slag, such that a resource is effectively recovered and utilized. The method is simple; preparation efficiency is high; and the production process is environment friendly. Through adjusting the ratio, concrete products with different strength grades can be obtained. The finally obtained concrete has the advantages of sufficient and fine mixing, good compressive strength, good water resistance, high stability, and good comprehensive performance.
Owner:山东环兴再生资源科技有限公司
Self-compacting freeze-thaw resistant concrete and preparation method thereof
The invention discloses a self-compacting anti-freezing and anti-thawing concrete and a preparation method thereof. The self-compacting anti-freezing and anti-thawing concrete is composed of, by weight part, 290-360 parts of cement, 15.5-25.5 parts of additives, 130-180 parts of mineral admixture, 250-320 parts of fine aggregate, 500-700 parts of coarse aggregate, 80-120 parts of coal ash, 180-240parts of water, 8.6-12.8 parts of water reducer, 10-15 parts of adhesives and 10-20 parts of lignin fiber, wherein the additives are composed of anti-freezing agent, air entraining agent and swellingagent at a weight ratio of 1:2-3:0.7-1. The preparation method of the self-compacting anti-freezing and anti-thawing concrete comprises preparing a first mixture, preparing a second mixture and preparing a finished product. The self-compacting anti-freezing and anti-thawing concrete has the advantages of being good in peaceability, less prone to bleeding and segregation and high in anti-freezingand anti-thawing performance.
Owner:青岛崇置混凝土工程有限公司
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