61results about How to "Promote cementation" patented technology

The invention discloses a method for preparing coarse aggregates from coral reefs and concrete.The method for preparing the coarse aggregates comprises the following steps that 1, the cleaned coral reefs are soaked for 2-10 h with hydrochloric acid of 0.1-1 mol / L, and then the soaked coral reefs are cleaned with water to remove hydrochloric acid remaining on the surfaces of the coral reefs; 2, the coral reefs soaked with hydrochloric acid are sieved, and residues on a sieve are obtained; 3, the residues on the sieve are soaked for 10 h or above with a water glass solution with the mass fraction ranging from 5% to 30%, the soaked residues are taken out and dried, and the coarse aggregates are obtained.The method solves the technical problem of taking the coral reefs as the coarse aggregates of concrete; the coarse aggregates are successfully applied to the concrete or even sea water and sea sand concrete, the coral reefs, sea water and sea sand are directly used for preparing the concrete, the processes such as sea water desalination and sea sand desalination are omitted, the problem that long distance transportation of river sand, fresh water and gravel is high in cost is solved, and enormous social and economic benefits are achieved.

The invention discloses a low softening point emulsified asphalt for a drilling fluid, and a preparation method thereof. The emulsified asphalt comprises, by weight, 25-50 parts of an oil slurry, 10-35 parts of a solvent oil, 1-4 parts of a non-ionic surfactant, 1-4 parts of a cation surfactant, 0-4 parts of a C2-C4 alcohol, and 30-40 parts of water. The preparation method comprises: adding a solvent oil and a non-ionic surfactant to an oil slurry, carrying out heating and uniform stirring to obtain an oil slurry mixing liquid, carrying out mixing heating stirring on water, a C2-C4 alcohol and a cation surfactant until the cation surfactant is dissolved, adding the oil slurry mixing liquid, and stirring at a temperature of 45-90 DEG C to obtain the low softening point emulsified asphalt. The emulsified asphalt has the following characteristics that: the emulsified asphalt is easily dispersed in water, and has characteristics of low softening point, good anti-sloughing effect and good lubricating performance; with the emulsified asphalt, the broken stratum can be well cemented at a low temperature, hole wall cracks can be plugged, and hole wall stability can be increased; and the emulsified asphalt can be widely used in geological drilling, petroleum and natural gas well drilling, geoheat drilling and the like, oil slurry recycling is achieved, and process cost is reduced.

The invention aims to solve the problem that there is few study on effective and lasting improvement methods of sandy clay loam saline-alkaline land in the prior art and provides an improvement methodof sandy clay loam saline-alkaline soil. Improver iron tailings are added into the sandy clay loam saline-alkaline soil, and the iron tailings are utilized to change proportion of sand, powder and clay particles in sandy clay loam and reasonably adjust texture composition to modify the sandy clay loam saline-alkaline soil into loam, so that a lot of capillary pores can be retained, a lot of non-capillary pores and macrocracks can be formed, permeability is improved, water draining and salt washing are facilitated, capillary water can be blocked from going up, salt accumulation is reduced, andsoil salinity can be lowered effectively; by adding organic acid, composted sludge or composted biogas residue, compatibility between iron tailings sand and natural soil is improved, differential settlement and stratification in the process of saline-alkaline soil improvement are avoided or reduced to form soil structure uniform in texture, and lasting improvement of the saline-alkaline soil andstability of soil texture are realized.

The invention discloses a spraying material for a coal mine underground roadway and a preparation method of the spraying material. The problems that existing spraying materials are poor in cohesiveness, high in rebound and easy to crack, lots of the materials drop on the ground, and functions of seepage prevention, water leakage prevention, gas leakage prevention and the like are not fulfilled aresolved. The spraying material and the preparation method thereof are provided. According to the spraying material for a coal mine, an inorganic composite material is adopted, various advantages of anorganic material and an inorganic material are combined, the optimal proportion of raw material components is analyzed by an orthogonal test method, the spraying speed and the spraying quality are greatly increased, the working environment is improved, meanwhile, the cost is reduced, and good economic benefits and social benefits are obtained.

The invention relates to a curing agent compound prepolymer composed of diphenylmenthane diisocyanate and 1, 6-hexamethylene diisocyanate and a preparation method thereof. The method comprises the following steps: MDI and an organic solvent are added and heated to 65 DEG C, polybasic alcohol is added and reacts with the mixture for 2 hours to 4 hours to obtain an MDI modifier; HID, an organic solvent and polybasic alcohol are added, heated and react for 2 hours to 5 hours, then the temperature is reduced below 70 DEG C, a TMP and organic solvent mixture is added, reaction at 70 DEG C lasts for 1 hour to 4 hours and 1 hour to 4 hours when the temperature is between 60 DEG C and 100 DEG C so as to obtain an HDI-MDI compound prepolymer curing agent. The method mixes and pre-polymerizes MDI and HDI, integrates the excellent performance of the two, produces a series of polyurethane curing agents with wide application range, high strength, good yellow-changing resistance, high curing speed, low toxicity, good storage stability and high solid content and has simple production technique.

The invention discloses a reinforcing and strengthening processing method of chemical grout, a injected body is slightly divided into a plurality of injected rock surfaces through being layered and segmented, then holes are drilled on the injected rock surfaces, the grout injecting pressure and the grout injecting speed of the grout injection are controlled, and the grout injecting time is sufficient, the surface tension whose initial viscosity is 2.0 m Pa.s-15.0 mPa.s and is less than the surface tension of water is used, the surface tension is not less than 0.050 m N / m at 20 DEG C, and epoxide resin grout materials with 1-16 degrees contact angles and the like are used, thereby epoxide resin slurry uniformly filters into a hole and a minuteness crack of the injected body, the gluing of gelatinization matter is good, the properties of the injected body is integrally improved, the strength of the injected body and the like are greatly improved, the over-high engineering cost is avoided, and the manufacturing cost is saved through controlling the infiltration range.

The invention discloses an emulsifying and flushing spacer fluid for improving the cementing quality of an oil-based drilling fluid and a preparation method of the emulsifying and flushing spacer fluid. The spacer fluid is prepared from the following components in parts by weight: 200 parts of water, 5-10 parts of a surfactant, 70-75 parts of base oil, 4-15 parts of a suspension stabilizer, 0.2-3.0 parts of a fluid loss agent, 0.2-2.0 parts of a tackifier, 0.2-5.0 parts of a diluent, 80-400 parts of a weighting agent and 0.05 part of a defoamer, wherein the surfactant is prepared from cocoanut fatty acid diethanolamide CDEA and alkyl glycoside APG in a weight ratio of 1: 2. The emulsifying and flushing spacer fluid which has an emulsifying structure with permeating, dissolving, volume-increasing, carrying functions and the like has a preferable flushing capacity to the oil-based drilling fluid and mud cakes adhered to a casing wall. The surfacant molecules in the spacer fluid can be adsorbed on the surfaces of a casing and a well wall to improve the interfacial wettability, so that cement slurry and the casing and the well wall are better contacted and cemented, and therefore, the first and second interfacial cementation qualities for well cementation are improved.

The invention relates to a chemical slip casting strengthening material and a preparation method thereof. A chemical slip casting strengthening material with two components (component A and component B) is provided, thus effectively solving the problems existing in conventional chemical slip casting materials, such as slow polyurethane polymerization, poor flame retardation and environment pollution. When the chemical slip casting material is used, the component A, i.e. phenolic resin, and the component B, i.e. curing agent, are mixed according to a weight ratio of 1:1. The phenolic resin is obtained by firstly mixing phenol and formaldehyde according to a weight ratio of 1:1.3-1.5, then adding the catalyst NaOH, heating the mixture to a temperature of 90-100 DEG C, causing the reaction to last 4-6 hours, carrying out neutralization and dehydration, cooling the mixture to 25 DEG C and adding foaming agent and surfactant for full mixing. The curing agent consists of 0.6-1.0 part of p-toluenesulfonic acid by weight, 0.8-1.3 parts of phosphoric acid by weight, 0.5-1.0 part of hydrochloric acid by weight and 0.1 part of ethylene glycol by weight. The chemical slip casting material needs a short time for solidification, has an inflaming retarding oxygen index higher than or equal to 54, and is suitable for the slip casting strengthening engineering of a mine, as well as the seepage-proofing, leaking stoppage and strengthening work of an ordinary underground engineering or a water conservancy engineering.

The invention relates to a heat insulating component, which is characterized in that the heat insulating component comprises an upper hard plate (3) and a lower hard plate (1) which are oppositely arranged, and a heat insulating layer (2); and the heat insulating layer (2) is arranged between the upper hard plate (3) and the lower hard plate (1), the heat insulating layer (2) is an integral layer block, and the thickness of the upper hard plate (3) and the thickness of the lower hard plate (1) are the same. The heat insulating component is suitable for cast-in-situ reinforced concrete or prestressed reinforced concrete hollow floors, roofs, wall bodies, foundation bottom plates and hollow bridges.

The invention discloses a high-strength muck unfired product and a preparation method thereof. The high-strength muck unfired product is prepared from the components in parts by weight: 20-50 parts ofblast furnace slag, 50-90 parts of muck, and 8-30 parts of an alkali-activator. According to the high-strength muck unfired product, the surface of the muck is coated with the blast furnace slag, calcium ions are released in an alkaline solution, the calcium ions substitute low-valence positive ions adsorbed on the surface of clay particles in the muck, the thicknesses of double electric layers on the surfaces of the clay particles are decreased, the distance between the particles become small, compaction is conducted under the action of the external pressure, and a more compact structure isobtained; active components in the blast furnace slag reacts with the alkali-activator to generate gelling substances such as C-A-S-H, the gelling substances are connected with muck particles, the early strength is formed, and sun cracking caused by water losing of the muck can be resisted; and under the high-alkaline condition, silicon oxide and aluminum oxide in the muck are released slowly to react with the alkali-activator in a pore solution, a geopolymer is generated, on the one hand, pores are filled, on the other hand, the muck particles are cemented better, and thus the long-term strength of the product is improved.

The invention relates to the technical field of coal mine disaster treatment, in particular to a working face collapse column grouting waterproof treatment method. The method comprises the following steps that a working face cut opening is pushed, and pushing is stopped until the safe distance between the working face cut opening and the collapse column is kept; two grouting auxiliary roadways anda plurality of grouting drill nests are tunneled at the positions, corresponding to the collapse column, of a transportation crossheading, and a plurality of corresponding grouting drill nests are tunneled at the positions, corresponding to the collapse column, of an air return crossheading; and inclination grouting drill holes are constructed in the grouting auxiliary roadways and the grouting drill nests in the transportation crossheading, inclination grouting drill holes are constructed in the grouting drill nests in the air return crossheading, and the final hole layers of all the grouting drill holes are controlled to be located in a bottom plate aquifer between the two bottom plate water-resisting layers of the coal seam. The method is not only suitable for preventing the situationthat the non-water-guide collapse column is activated and guides water due to mining influence, but also can reinforce the water-guide collapse column in a multi-layer grouting mode, the water insulation capacity can be improved, and it is ensured that no water damage accident occurs when the coal face is pushed over.

The invention relates the salt-water cement mud. The mud comprises 100 parts G grade cement, 44-50 parts 15-18% salt-water, 1.2-1.8 parts salt resistance dispersing agent, 3-4 parts salt resistance filtration-reducing agent, and 0.1-0.5 parts defoaming agent. The invention also provides the technology, which has low cost and simple operation and meets other mating technology. The cement has advantages of low temperature fast coagulation, good salt resistance, high-early-strength, preference consistency, low filteration loss and good stability.

The invention provides elastic-tough well cementation cement paste suitable for coalbed methane. The elastic-tough well cementation cement paste comprises the following components in parts by weight:100 parts of oil well cement; 12 to 15 parts by weight of water-soluble resin; 0.8 to 4 parts by weight of fibers; 7-9 parts by weight of nanoparticles; 35-48 parts by weight of water. Compared with the prior art, the nanoparticles are used for regulating and controlling the hydration reaction of the cement paste; meanwhile, micropores in set cement are filled, the compactness of the set cement isimproved, and the strength is optimized; meanwhile, the added fibers not only can play a bridging role in cracks, but also can form a compact net-shaped structure in set cement to absorb external force impact and improve the tensile strength of the cement; in addition, the water-soluble resin is added as a cementing material, so that the cementation between the plugging materials and between theplugging materials and the surfaces of the cracks can be improved, the stability of the plugging structure is further improved, and the elasticity and toughness of the cement paste can be improved asthe resin material has better elasticity and toughness.

The invention discloses a working fluid system applicable to water-base drilling fluid filter cake removal before well cementing. The working fluid system is composed of the following components in percentage by mass: 0.5-1.5% of solid-phase denudation main agent, 0.1-1% of solid-phase denudation aid, 0.15-0.5% of viscosity breaker, 0.5-1.5% of surfactant, 1-3% of clay stabilizer and the balance of water. The pH value of the solution is regulated to 12-14 by NaOH or KOH. The solid-phase denudation main agent is composed of any one or mixture of ethylenediamine tetraacetic acid, disodium edetate, diethyltriamine pentaacetic acid and pentasodium amino trimethylene phosphonate; and the solid-phase denudation aid is composed of any one or mixture of sodium gluconate, oxalic acid and potassium sodium tartrate. By combining the characteristics of well cementing operation, the working fluid system can shorten the construction time, has higher reaction speed, achieves the goals of removing the filter cake and enhancing the cementing strength of the well-cementing interface, and thus, has broad market prospects.

The invention relates to a fabrication method of a heat insulating component. The fabrication method of the heat insulating component is characterized in that the fabrication method comprises the following steps that a heat insulating layer (2) is firstly fabricated by using a heat insulating material; after the heat insulating layer is cured and formed, an upper hard plate (3) is poured on one surface of the heat insulating layer (2); after the upper hard plate (3) is hardened and formed, a lower hard plate (1) is poured on the other surface of the heat insulating layer (2); and after the lower hard plate (1) is hardened and solidified, the heat insulating component is cured to a specified age. The heat insulating component which is fabricated by using the fabrication method is suitable for cast-in-situ reinforced concrete or prestressed reinforced concrete hollow floors, roofs, wall bodies, foundation bottom plates and hollow bridges.

The invention relates to injectable hydrogel as well as a preparation method and application thereof. The injectable hydrogel is obtained by taking gelatin and tannic acid as raw materials and carrying out chemical crosslinking under the catalysis of transglutaminase. Gelatin molecular chains in the injectable hydrogel form a network structure under the action of amido bonds, polyphenol hydroxyl groups of the tannic acid and amino groups on the gelatin chains have hydrogen-bond interaction, the polyphenol hydroxyl groups of the tannic acid can be spontaneously complexed under an alkaline condition, and finally the injectable hydrogel is endowed with excellent adhesion performance; the material and tissues are adhered, the performance of the material is promoted, the injectability of the material is improved, the gelling time is shortened, the clinical operation is easy, and the mechanical property is improved. The hydrogel material can realize adhesion and efficient retention of defective tissues, is suitable for filling various irregular-shaped defects, can efficiently promote the performance of the material to play, and realizes repair of the defective tissues.

The invention discloses lipophilic cement paste capable of improving the packing performance of oil-containing well cementation interfaces. The cement paste comprises the following components in parts by weight: 100 parts of cement, 35-65 parts of water, 3-8 parts of a fluid loss agent, 2-5 parts of a retarder, 0.5-1.7 parts of an anionic-nonionic surfactant, 0.5-1.7 parts of an anionic or nonionic surfactant with an HLB value of 8-15, 0.02 part of a defoaming agent, 20-25 parts of a strength stabilizer, 10-80 parts of a density regulator and 1 part of a dispersing agent. The cement paste disclosed by the invention has oleophylic capacity, realizes good cementation of a cement sheath and an oil-containing well cementation interface I and an oil-containing well cementation interface II, can overcome the defect that wetting reversal of the interfaces is achieved only by using prepad fluid, greatly improves the packing effect of the cement sheath under the condition of oil-based drilling fluid, and reduces dependence on the performance of a prepad fluid.

The invention relates to a heat insulating component, which is characterized in that the heat insulating component comprises an upper hard plate (3) and a lower hard plate (1) which are oppositely arranged, and a heat insulating layer (2); and the heat insulating layer (2) is arranged between the upper hard plate (3) and the lower hard plate (1), the heat insulating layer (2) is an integral layer block, and the plate edge of at least one side of the upper hard plate (3) is a folded side or a curved side. The heat insulating component is suitable for cast-in-situ reinforced concrete or prestressed reinforced concrete hollow floors, roofs, wall bodies, foundation bottom plates and hollow bridges.

The invention relates to the field of aramid fibers, particularly to a high-strength cold-resistant aramid fiber synchronous belt and a preparation method thereof. The high-strength cold-resistant aramid fiber synchronous belt is prepared from aramid short fibers, nylon short fibers, glass fiber core wires, ferroferric oxide, phenolic resin, N-2,2-dibenzamido diphenyl disulfide, calcium borate, silicon dioxide, aluminum oxide, bentonite, sodium carboxymethyl cellulose and silicone rubber. According to the method, the performance of all the raw materials is fully considered, fiber sorting is guided under an external magnetic field through the magnetic materials, the synergistic effect among the raw material components is effectively enhanced, good use of the synchronous belt at the low temperature is guaranteed, and the use time of the synchronous belt in the low-temperature environment is prolonged.

The invention discloses an ultralow-density cement slurry suspension stabilizer applicable to low-temperature-to-high-temperature conditions. The suspension stabilizer is prepared from the following ingredients in percentage by mass: 45% to 60% of subnanometer silica, 40% to 55% of micron amorphous silica and 5% to 8% of micron asphalt powder. The subnanometer silica contains the silicon dioxide content of 95% or more by mass, is white or greyish-white solid powder and has the median particle size lower than 200nm-450nm; the micron amorphous silica contains the amorphous silicon dioxide content of 85% or more by mass, is white or greyish-white solid powder and has the median particle size lower than 10mm-30mm; and the micron asphalt powder contains the asphalt content of 85% or more by mass, has a softening point of 30 DEG C to 130 DEG C and has the median particle size lower than 20mm-50mm. The suspension stabilizer can cause low thickening at normal temperature to facilitate the blending of ultralow-density cement slurry and can still have good suspending characteristics at high temperature to prevent the ultralow-density cement slurry from being settled and layered, the design performance of the cement slurry is kept, and the demands of oilfields on low-temperature-to-high-temperature ultralow-pressure stratum well cementation are met, so that the suspension stabilizer has abroad application prospect.

The invention discloses a freeze resistant sand fixing agent, and belongs to the technical field of sand fixing. A prepared water absorbing additive can improve the swelling performance and swelling dynamics of a composite material; absorbed water is stored in the channels, introduced carboxyl groups have a hydrophilic property, water contacting performance is enhanced, the water absorbing and water retaining performance of the sand fixing agent are improved; a microbial additive absorbs Ca<2+> from a surrounding sandy environment, then Ca<2+> combines with carbonate ions to generate mineral precipitates, as the stacking of the minerals, the density of the sandy layer is increased, the permeability is reduced, the absorbed water is sealed and stored, the cementing of sand is promoted, thesand is continuously fixed and protected; a freeze resistant additive can effectively reduce the size of pores, the transpiration rate is reduced, the water utilization rate is increased, water loss is reduced, water can be absorbed and utilized by plants, and the sand quality can be adjusted. The problems that in the prior art, the freeze resistant performance of a conventional sand fixing agentis bad and the sand fixing efficiency is bad are solved.

The invention relates to the technical field of centering devices for well drilling and completion work, and discloses a hydraulic oscillation centering device. The hydraulic oscillation centering device comprises an outer cylinder, an eccentric rotating inner cylinder and an annular gland. An annular end cover is fixed to the inner side of the upper end of the outer cylinder. The eccentric rotating inner cylinder which can rotate in the outer cylinder in an eccentric mode under the impact of fluid is arranged in the outer cylinder in a sleeved mode. The annular gland is fixedly installed at the position, corresponding to the position below the eccentric rotating inner cylinder, inside the lower portion of the outer cylinder. The annular gland and the annular end cover are respectively provided with at least one circulating passageway which is communicated with the inner portion of the outer cylinder in the circumferential direction. The hydraulic oscillation centering device is reasonable and compact in structure; the hydraulic oscillation centering device drives a sleeve to shake, and therefore generated vibration waves can impact on sleeve columns and wash away mud cakes on the well wall; viscosity of displacing liquid is reduced, and therefore the displacing liquid can easily flow, displacing efficiency is improved, and meanwhile cementing of cement sheathes and the well wall and cementing of the sleeve columns and the well wall are facilitated, the density degree of set cement is increased, and therefore well fixing quality is effectively improved; the hydraulic oscillation centering device can be applied to any well condition and any stratum and has a good effect on low-pressure stratums which are prone to leakage.

The invention relates to a soda residue light stabilized soil, which is prepared from the following raw materials: dry soil, water, a curing agent and a foaming agent, and is characterized in that based on the weight of the dry soil, the dry soil is prepared from soda residue and soil according to a mass ratio of (40 to 60) to (70 to 30); the curing agent is prepared from 11-19% of cement, 4-10% of quicklime, 8-12% of fly ash, and 0.3-0.7% of acrylamide and ammonium persulfate, and the ammonium persulfate is 0.2-0.4% of the amount of acrylamide. The foaming agent may be aluminum powder, and the aluminum powder content is 0.9-1.1% by weight of the dry soil. The invention also provides a method for preparing the light cured soil.

The invention relates to a fabrication method of a heat insulating component. The fabrication method of the heat insulating component is characterized in that the fabrication method comprises the following steps that a lower hard plate (1) is firstly poured on a formwork, a heat insulating layer (2) in the middle is poured by using a heat insulating material before the lower hard plate is hardened and solidified, an upper hard plate (3) is poured before the heat insulating layer is hardened and solidified, and finally the heat insulating component is demolded, cured and formed. The heat insulating component which is fabricated by using the fabrication method is suitable for cast-in-situ reinforced concrete or prestressed reinforced concrete hollow floors, roofs, wall bodies, foundation bottom plates and hollow bridges.

The invention relates to the technical field of health-care food processing, in particular to a preparation method of dictyophora indusiata health-care food. The method comprises the following steps: (1) treating raw materials; (2) shaping; and (3) decocting. The dictyophora indusiata is soaked and cleaned in clean water with low pH, so that the substrate carried in dictyophora indusiata cultivation is effectively removed, the cleanliness of dictyophora indusiata is improved, and the convenience of subsequent treatment is effectively enhanced; and walnut, sesame, hazelnut and beef jerky are mixed and stir-fried, flavor substances are stir-fried out, meanwhile, the surface roughness is improved, fiber dispersion of the beef jerky is facilitated, and when mixed with the glutinous rice flour, combination of other components and paste can be remarkably promoted. The prepared finished product has light fresh scent flavor of dictyophora indusiata, is relatively sweet in mouth feel and cool and comfortable in aftertaste, and effectively enriches the variety of dictyophora indusiata products.

The invention provides a composite external wall panel, which comprises a concrete wall body prepared by adding thermal insulation materials into silicate cement, wherein outer decorative layers and inner decorative layers are respectively arranged on the inner and outer sides of the concrete wall body; a double-layer bidirectional steel mesh is arranged inside the concrete wall body; the double-layer bidirectional steel mesh comprises a first layer of steel mesh and a second layer of steel mesh which are arranged at intervals; and Rachel steel bars connected between the first layer of steel mesh and the second layer of steel mesh. The composite exterior wall panel of the invention is suitable for exterior wall panels in fabricated buildings and has the performances of light weight, high strength, fire prevention, self-insulation, decoration, waterproof, sound insulation, frost resistance, convenient manufacture, environmental protection and the like.