39results about How to "Good cementation" patented technology

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 discloses supersaturated potassium chloride cement paste for well cementation. The cement paste is prepared from the following components: high sulfate-resistant G-grade cement, a salt-bearing fluid loss reducer, a preservative, a retarder, water, potassium chloride, a reinforced anti-migration additive, an expanding agent and a weighting agent. The supersaturated potassium chloride cement paste has the effects of stabilizing a well wall and improving the well wall strength; supersaturated potassium chloride assists a cement paste to resist the influence of mirabilite, gypsum, sodium, potassium, magnesium and other halite in an evaporite bed; the technology is reliable; the field construction is simple and convenient; the well cementation effect is good; the requirements on well cementation in the evaporite bed, a high-pressure deep well evaporite bed and a super-thick evaporite bed and other complex conditions can be met; the supersaturated potassium chloride cement paste has favorable application prospect particularly for the exploration and development of a potassium bittern water well.

The invention relates to a cementing material containing a large amount of waste incineration fly ash and slag, and a preparation method and an application thereof. The cementing material containing the large amount of waste incineration fly ash and slag mainly comprises, by weight, 30-70 parts of S95 slag, 20-60 parts of the waste incineration fly ash and 7-13 parts of desulfurized gypsum. The large amount of waste incineration fly ash is added, and the cementing material has good industrially-applied compressive strength without adding additives such as an excitant and an early strength agent, so the cementing material can be used as a cementing material of concrete, can also be used as a mining cementing filling material, and is a good substitute of cement.

The present invention relates to a bonding filling material and a method for carrying out downhole filling using the same, wherein the said gangue bonding filling material comprises: 68.6-82.2% by weight of gangue; 12.7-21.8% by weight of coal ash; and 1-18.7% by weight of water. Pressure intensity of the rammer compacter for filling and compacting in filling the bonding filling material is more than or equal to 20 Mpa. According to the invention, filling effect and filling quality are improved, and the movement of the overlying strata can be effectively controlled. The bonding filling material is filled directly without any additives, and the bonding property of the bonding filling material is increased due to the addition of coal ash as one filling material. The conveying system in the invention has simple requirements and enables continuity and high effectiveness of the filling. Downhole treatment of gangue and coal ash is fulfilled, and ecological and living environment around mining area are improved.

The present invention discloses a water permeability concrete barrier board and a preparation method thereof, and belongs to the field of hydraulic engineering and marine engineering. According to the water permeability concrete barrier board, the large doping amount fly ash cementing material or composite cementing material is adopted as the substrate, the nanometer bentonite modified potassium magnesium phosphate cement protection reinforcing steel bar or FRP bar is adopted as the reinforcement material, the reinforcing steel bar matching and protection surface parameter is calculated according to the used environment, and the water permeability concrete edge beam, the concrete floor protection plate and the water permeability concrete grid are subjected to cast-in-site and partial or whole precast so as to obtain the water permeability concrete barrier board, wherein the surface roughness is increased, and the water permeability effects of the communication hole between the edge beam and the internal of the grid is provided, such that the levee protection surface structure can be endowed with the water permeability energy dissipation, the maximum forward direction wave pressure intensity can be weakened, and the wave climb performance can be limited; and the 28 day compressive strength of the water permeability concrete of the water permeability concrete barrier board is more than 40 MPa, the levee top wave overtopping of the water permeability concrete barrier board is reduced by 15-25% compared with the ordinary barrier board, and the water permeability concrete barrier board can be used for the protection surface structure of the river bank, the sea bank and the training jetty of the sea bank, wherein the integrated precast barrier board can be reused.

The invention discloses a cement pipe pile for reinforced photovoltaics using recycled concrete and a preparation method thereof. The cement pipe pile comprises the following components: recycled coarse aggregate, recycled fine aggregate, a cementing material, a preservative, an expansion agent, an early strength agent, a water reducer, an auxiliary agent and water. The preparation method of the cement pipe pile comprises the following steps: preparing recycled coarse aggregate and recycled fine aggregate; carrying out carbonization treatment; determining slump and preparation strength; mixingand stirring raw materials to obtain recycled concrete; placing the recycled concrete into a mold, stretch-drawing, carrying out centrifugal molding; maintaining, and demoulding to obtain the cementpipe pile using the recycled concrete. By using the recycled aggregates as the raw materials of the cement pipe pile, costs are reduced and the environment is protected. With reasonable matching of the raw materials, the cement pipe pile has excellent compressive strength and anti-cracking ability, and has good corrosion resistance and durability. The preparation process of the cement pipe pile issimple and is easy for large-scale production.

The invention relates to a method for preparing a cementing material by using washed waste incineration fly ash and application. The method comprises the following steps: washing, drying and crushing the municipal waste incineration fly ash, and mixing with cement to prepare the cementing material. According to the method, the municipal solid waste incineration fly ash can be effectively utilized to prepare the cementing material, the utilization rate of the municipal solid waste incineration fly ash is increased, the preparation method is simple and good in safety and environment friendliness, certain economic benefits are achieved, and harmless and resource utilization of the fly ash is achieved.

The invention discloses a conduction type bituminous mixture, a preparation method and a self-snow-melting system of the conduction type bituminous mixture. The conduction type bituminous mixture comprises coal gasification fine slag, stone and bitumen. The self-snow-melting system comprises a bituminous pavement formed by paving the conduction type bituminous mixture, a first plate electrode, a second plate electrode, an on-off actuator, a temperature sensor, a controller and a photoelectric converter; the first plate electrode, the second plate electrode, the on-off actuator, and the temperature sensor are arranged under the bituminous pavement; the controller and the photoelectric converter are arranged outside the bituminous pavement; the temperature sensor is used for obtaining the real-time temperature of the bituminous pavement and sending the real-time temperature to the control input end of the controller; the controller is used for controlling the on and off of the on-off actuator according to the real-time temperature. The self-snow-melting system adopts the coal gasification fine slag as a bituminous mixture filler of pavement layers of highway bridge decks in cold highland areas, a photovoltaic power generation system is used as a power supply, based on the information technologies such as mobile Internet and sensors, under special climatic environments, a self-snow-melting ice-inhibition function of the bridge deck pavement layer is realized, and the function of traffic safety early warning is reached.

The invention relates to coarse-fine-particle mixed soil and a preparation method thereof, and belongs to the technical field of civil construction. The coarse-fine-particale mixed soil is prepared from the following raw materials: 77-95 parts by weight of sand gravel with a particle diameter of 0.1-20mm, 11-16 parts by weight of powder clay with a particle diameter of less than 0.1 mm, and 4-6 parts by weight of a gel material. The invention also discloses the preparation method of the coarse-fine-particle mixed soil. According to the coarse-fine-particle mixed soil and a preparation method thereof, the preparation method is simple in process, easy in operation and loose in condition limitation. The coarse-fine-particle mixed soil is prepared from the sand gravel and the powder clay; theraw materials are easily obtained and are abundant in supply; and the prepared mixed soil has high compactness, is easily molded, and has better cementation performance among particles, so that the problem that in-situ soil sample of a deep covering layer is not easy to obtain can be well solved.

The invention discloses a mud cake hardening enhancer for drilling fluid. The enhancer is characterized by composing polysiloxane, a mud cake hardener, a low molecular weight polymer, a film former and an organic chelating agent; the mass ratio of the mud cake hardener, the low molecular weight polymer, the film former and the organic chelating agent is 30-45:35-50:5-12:8-15:2-8. By adding the mudcake hardening enhancer to the drilling fluid and completion fluid, the properties of a drilling fluid mud cake can be effectively changed, the quality of the drilling fluid mud cake can be improved,the thickness of the mud cake can be reduced, the thin and tough mud cake can be formed, the strength of the mud cake can be increased, thereby improving the interface cementation strength during well cementing, the physical combination of a cementing interface is transformed into chemical affinity, thereby improving the interface cementation quality between the mud cake and a cement ring and a casing and the cement ring, the interface cementation permeability rate is reduced, the cementing quality rate is improved, the service life of oil and gas wells is prolonged, and a crude oil recoveryratio is correspondingly improved.

The invention discloses a method for preparing a compound modified peanut protein adhesive. The method comprises the following step of: adding calcium hydroxide and/or sodium dodecyl benzene sulfonate and/or urea serving as a modifier into peanut protein powder serving as a raw material respectively to obtain the peanut protein adhesive. Compared with the conventional trialdehyde adhesive, the adhesive has the advantages of no emission of formaldehyde, higher bonding strength, environmental friendliness and better social and environmental benefits.

The invention relates to a method for stopping water in karstic tubular fractures in flowing water condition through loofah sponges and grouting. The method comprises the following steps that (1) a plurality of grouting pipe nozzles and the multiple loofah sponges are arranged in karstic tubular fractures in the water flowing condition, and the grouting pipe nozzles are inserted into the loofah sponges; (2) cement slurry is injected into the grouting pipe nozzles through a grouting pump, the injecting pressure is increased after the cement slurry slowly enters the loofah sponges and the loofah sponges are filled with the cement slurry, and the loofah sponges at the grouting pipe nozzles are washed into the pipe centers of the karstic tubular fractures to make the loofah sponges be combined with the interiors of the karstic tubular fractures with injected cement slurry; and (3), cement is stopped from being injected when water cannot flow out of the karstic tubular fractures any longer. The method can be rapidly applied in the water flowing environment, the work amount is small, the cost is low and the reinforcement effect is good.

The invention discloses a hard organic framework filling material and a preparation method thereof.The material is prepared by mixing an organic framework material, a foaming material, an inorganic filling material, a surfactant, a retarder and an activating agent, and the weight ratio of the organic framework material to the foaming material is 1: 2.7-4.0; wherein the volume ratio of the mixtureof the organic framework material and the foaming material to the inorganic filling material is 1: (0.3-0.8), the content of the surfactant is 0.001-0.003% of the total weight of the hard organic framework filling material, the content of the retarder is 0.002-0.004% of the total weight of the hard organic framework filling material, and the content of the activator is 0.002-0.005% of the total weight of the hard organic framework filling material. The organic hard framework material is simple in structure, safe and environmentally friendly, and has good expansion performance, mechanical performance, excellent water permeability, cementing performance, super-long durability and stability.

The invention discloses a cemented filling material for mines as well as a preparation method and application thereof, and belongs to the technical field of cemented filling materials. The cemented filling material comprises the following raw materials in parts by mass: 8-15 parts of desulfurized gypsum, 6-15 parts of hematite, 80-120 parts of gangue, 3-8 parts of fly ash, 24-28 parts of slag, 14-18 parts of copper-containing waste, 1-2 parts of a water reducing agent and 40-60 parts of water. The hematite and the copper-containing waste are subjected to calcination treatment and then mixed with the remaining raw materials, and the cemented filling material for the mine is obtained. According to the method, the toxic heavy metal copper does not re-seep while the copper-containing waste is reutilized, and other raw materials are used so as to effectively improve the mechanical property of the mine cemented filling material.