38results about How to "Meet pumping requirements" patented technology

The invention provides a high-performance expanded hybrid fiber concrete material for wet joints, and a preparation method thereof. According to the present invention, based on the practical problems of the wet joint in the whole simply supported-continuous structure system, high-strength hybrid fiber reinforced concrete is used as a joint material to provide the hybrid effect at different levels and different load applying stages so as to well inhibit and restrict the development of cracks, wherein the development of the concrete micro-crack is limited by releasing the concentrated force of the micro-crack in the concrete with Durafibers, the development of the macro-crack is limited by steel fibers, and by mixing the Durafibers and the steel fibers, a variety of mechanical properties of the whole concrete can be improved in the case of the low doping volume, such that the concrete can have characteristics of high bending resistance, high toughness, high impermeability, high fatigue resistance and the like so as to prevent the occurrence of diseases.

The invention discloses a heat-resistant and salt-resistant profile controlling agent, comprising waste slurry, a slurry curing agent, a strength modifier, a dispersant, a retarder and water. Based on the weight of the waste slurry as 100%, the profile controlling agent comprises 6-12 wt% of the slurry curing agent, 6-12 wt% of the strength modifier, 0.1-1.5 wt% of the dispersant, 0.02-0.15 wt% of the retarder and 6-12 wt% of water. The invention also relates to a preparation method of the heat-resistant and salt-resistant profile controlling agent. The heat-resistant and salt-resistant profile controlling agent is obtained by the steps of adding the slurry curing agent, the strength modifier, the dispersant, the retarder and water in the waste slurry, based on the weight of the waste slurry, and standing for 66-78 hours. The invention also provides an application of the waste slurry in preparing the heat-resistant and salt-resistant profile controlling agent.

The invention discloses high-performance lithium slag pump concrete. The proportion of mixture of the concrete is cement:water:mineral powder:fly ash:lithium slag:sand:gravel:synergist: additive being (340-520):(165-200):(0-50):(0-50):(40-150):(700-850):(1,000-1,100):(2-3.5):(7-12) according to the component unit of kg/m<3>. By means of selection of the raw materials and design of proportioning, the high-performance lithium slag concrete which is good in working performance, mechanical performance and durability and can be used for pumping is obtained.

The invention discloses a mixture for preparing C55 high-intensity ultra-high-pumping concrete, which comprises cement, river sand, mechanism sand, broken stone, water and additional additives. The slump of the concrete prepared from the mixture is 180 to 220mm, the expansion degree is greater than 500, and the air content is 2 percent to 4 percent. The work performance such as water preserving performance, cohesiveness, flowability and the like of the mixture of C55 high-intensity ultra-high-pumping concrete is good. The slump loss of the prepared concrete is small, the machine outlet slump is controlled to be 180 to 220mm, the expansion degree is greater than 500mm, the slump after 1h is not less than 180mm, and the expansion degree is also not smaller than 500mm. The air is properly led through the additional additives, so the air content of the concrete is controlled to be 2 percent to 4 percent, the pumpability of the concrete is good, and the pumping requirement is met. The initial setting time of the concrete is about 7 hours, and the concrete construction casting interruption time limit requirement can be perfectly met.

The invention discloses a circulating fluidized bed combustion ash based filling cemented material and a preparation method of slurry of the circulating fluidized bed combustion ash based filling cemented material. The circulating fluidized bed combustion ash based filling cemented material is prepared by taking circulating fluidized bed combustion ash as a cementing material and phosphate tailings as fine aggregates, and using water glass, quick lime and sodium sulfate for composite excitation. The cemented material comprises the following raw materials in percentage by weight: 12-30 percentof the circulating fluidized bed combustion ash, 34-58 percent of the phosphate tailings, 1.1-2.6 percent of the water glass, 2.1-5.2 percent of the quick lime, 0.3-0.7 percent of sodium sulfate and 26-30 percent of tap water. In the circulating fluidized bed combustion ash based filling cemented material, the activity of volcanic ash of the circulating fluidized bed combustion ash is relatively low; and by using the water glass and sodium sulfate, the early compressive strength of the cemented material is remarkably improved; and by adding the quick lime, the later compressive strength of thecemented material is improved. The filling material fully utilizes industrial waste slag, is low in bleeding rate, good in mobility and high in compressive strength, greatly lowers the filling cost and is environmentally friendly.

The invention discloses a concrete water reducer and a preparation method thereof. The water reducer is prepared from the following raw materials in parts by weight: 10-15 parts of polycarboxylic acidwater reducer, 18-24 parts of polyalcohol, 7-10 parts of polyether polyol, 8-13 parts of ethanolamine, 5-7 parts of polypropylene fibers, 4-5 parts of sodium dibutyl dioctyl sulfonate, 15-20 parts ofsilicon dioxide, 5-7 parts of calcium formate, 6-9 parts of silicone oil, 9-14 parts of saccharose, 1.5-2.5 parts of setting retarder, 0.1-0.2 part of air entraining agent and 100-150 parts of water.According to the concrete water reducer and the preparation method thereof, all the raw materials are in synergism, thus, the mixed amount of the water reducer can be reduced, the water reducing rateis improved, the slump of the concrete can be remarkably improved, the cohesiveness and workability of the concrete are improved, and pumping requirements of the concrete are met; the water reducer disclosed by the invention and a concrete material are used in a combined manner, and the chemical corrosion resistance, durability, fluidity and folding strength of the concrete can be greatly improved, so that the water reducer can be extensively applied to the in-place casting of concrete constructions such as high-rise buildings, wide-span bridges, offshore oil production platforms and nuclearpower plants with requirements on high durability, high fluidity, high strength guarantee rate and the like and commercial concrete.

The invention relates to a mounting and fixing structure for a super-high-rise pumping pipeline. The structure comprises the pumping pipeline, a horizontal pipe fixing assembly, a vertical pipe fixingassembly and a bent pipe fixing assembly; the horizontal pipe fixing assembly comprises a horizontal concrete structure I, a supporting part I and a fastening part I, and the two ends of the supporting part I are fixed to the fastening part I and the horizontal concrete structure I correspondingly; the vertical pipe fixing assembly comprises a vertical concrete structure, a supporting part II anda fastening part II, and the two ends of the supporting part II are fixed to the fastening part II and the vertical concrete structure correspondingly; and the bent pipe fixing assembly comprises a horizontal concrete structure II, supporting parts III and a fastening part III, the at least two supporting parts III are arranged, and the two ends of each supporting part III are fixed to the fastening part III and the horizontal concrete structure II. According to the mounting and fixing structure for the super-high-rise pumping pipeline, the pumping pipeline can be firmly fixed, the pumping pipeline is prevented from falling off due to vibration, and the pumping pipeline can be sufficiently and effectively supported, so that the supporting effect is improved, and it is guaranteed that thewhole pumping pipeline meets the super-high-rise pumping requirements.

This invention discloses an activator used in large-doping-amount finely ground slag concrete. The activator is composed of: gypsum 60-81 wt.%, naphthalin high-performance water reducer 7-10 wt.%, hydroxyl compound 0-0.02 wt.%, surfactant 0-0.002 wt.%, and finely ground slag 9-30 wt.%. The activator can replace 4-6% of cement in large-doping-amount finely ground slag. The concrete added with the activator has such advantages as high mixability, high pumpability, and high volume stability. With the activator, the doping amount of finely ground slag in the concrete can be increased to 70%.

The invention relates o the field of premixed concrete building materials, in particular to pump concrete added with steel slag magnetic separation mud powder and a preparation method thereof. Admixtures comprise 300 to 500 weight parts of cement, 50 to 100 weight parts of steel slag magnetic separation mud powder, 700+/-50 weight parts of sand, 1,000+/-50 weight parts of gravel and 200+/-20 weight parts of water; and an additive is 2 to 2.5 percent of the total weight of the cement and the steel slag magnetic separation mud powder. The preparation method comprises the following steps of: stirring and mixing the cement, the steel slag magnetic separation mud powder, the sand and the gravel according to a weight ratio; and adding water and the additive, continuously stirring uniformly, and using the concrete for construction and pouring. The invention has the advantages that: the technical problem of low volume stability of the steel slag mud powder in the concrete is solved; the pump concrete has the fluidity of more than 16cm and the assurance factor of strength of over 99 percent, does not bleed, and has better workability; three-waste pollution is reduced; and the production cost of each cubic meter of concrete can be greatly reduced.

The invention discloses a preparation method of a low-shear-strength grouting material for a shield excavation gap. The preparation method comprises the following steps: selecting a grouting material; preliminarily designing multiple groups of grouting materials with different water cement ratios and multiple groups of grouting materials with different swelling-water ratios; manufacturing a plurality of groups of grouting material test pieces; testing the shear strength of each group of test pieces to obtain the optimal water-cement ratio and the optimal swelling-water ratio of the grouting material; adding bentonite and water into a stirrer according to the optimal swelling-water ratio, conducting stirring, fully and uniformly conducting mixing, conducting standing, and fully conducting swelling; measuring water glass with required baume degree, adding the water glass into expanded bentonite slurry, and uniformly conducting stirring; and adding cement powder, and continuously conducting stirring uniformly to finish the preparation. The filling problem of the excavation gap in shield construction is studied, and the problem that a shield body is locked by a conventional shield body grouting material can be solved; and a novel filling material configuration method is adopted, the pumping requirement in grouting equipment is met, and meanwhile high shear strength is achieved.

The invention provides a distribution valve, a pumping system and a pumping machine. A valve body of the distribution valve comprises a valve body, two valve holes, two feeding ports and two discharging ports, wherein the two valve holes are formed in the valve body side by side, and a feeding and discharging port is formed in one end of each valve hole; the two feeding ports are formed in the valve body and communicate with the two valve holes respectively; and the two discharging ports are formed in the valve body and communicate with the two valve holes respectively. According to the technical scheme, the feeding and discharging ports communicate with the feeding ports or the discharging ports by rotating a valve element, so that the reversing function of the distribution valve can be realized, the distribution valve can work stably and efficiently in pumping operation, the requirement for noise reduction is met, and the application range of the distribution valve is enlarged.

The invention discloses a dirty oil floated oily sludge dewatering treatment method, and belongs to the technical field of petroleum waste residue treatment. According to the dirty oil floated oily sludge dewatering treatment method, biosurfactant rhamnolipid is added into dirty oil floated oily sludge continuously for dewatering, wherein adding amount of rhamnolipid is controlled to be 400 to 1000ppm, dewatering temperature is controlled to be 45 to 60 DEG C, pH value is adjusted to 4 to 5, rhamnolipid is uniformed mixed with the dirty oil floated oily sludge via stirring, and an obtained mixture is allowed to stand for 10min to 5h, so that solid floated oily sludge and oil float upwards, and a lower layer is a relatively clear water layer; after demulsification treatment of the dirty oil floated oily sludge with rhamnolipid, dewatering rate is higher than 60 to 70%, obtained concentrated floated oily sludge still possesses excellent fluidity, requirements of pumping are satiasfied, the floated oily sludge is subjected to coking treatment to avoid discharge of the floated oily sludge; processing cost is reduced, environmental protection benefits are achieved, and environment pollution on surrounding areas is reduced.