39results about How to "Reduced pumping resistance" patented technology

The process of preparing nanometer capsule phase change material emulsion includes adding the oil phase liquid compounded with olefin monomer, hydrophilic monomer, alkane, initiator and n-lauryl mercaptan into the mixed liquid of emulsifier and deionized water via stirring and ultrasonic dispersing to obtain micro emulsion, introducing nitrogen to the micro emulsion system to eliminate oxygen viastirring, reflux condensing, heating to 65 deg.c and constant temperature polymerization reaction for 5 hr, and cooling naturally to room temperature to obtain the nanometer capsule phase change material emulsion. Thus prepared nanometer capsule phase change material emulsion has nanometer size, stable performance, great phase change enthalpy and wide application in latent heat functional hot fluid, heat accumulating and temperature regulating fabric, energy saving building wall and other fields.

The invention discloses an ammonia carboxyl high-efficiency water reducer for concrete. The ammonia carboxyl high efficiency water reducer for concrete has low cost, high water reducing rate and good adaptability to cement. The invention also discloses the method and application of synthesizing the high-efficiency water reducer of ammonia carboxyl concrete. Firstly, concentrated sulfuric acid, benzoic acid and phenol are used as reaction raw materials to carry out sulfonation reaction, and then neutralized with sodium hydroxide to obtain a sulfonated product. Then the mass ratio of polycondensation reaction is 65-80:25-40; the polycondensation reaction time is 6±0.5h. When the amount of the ammonia carboxyl new concrete high-efficiency water-reducing agent converted into solid is 0.35-0.6% of the cement weight, the water-reducing rate is 20%-35%. The sulfamate high-efficiency water reducer of the invention has low cost, high water reducing rate, good adaptability to cement and easy industrial production.

The invention discloses a gas extraction center divided-flow type grouting and hole sealing device which comprises an extraction pipe, a grouting plug, a left bag and a right bag, wherein the extraction pipe penetrates through the left bag and the right bag, a multifunctional valve is arranged in the extraction pipe, and the left side and the right side of the multifunctional valve are respectively connected with a left flow division pipe and a right flow division pipe; the left flow division pipe and the right flow division pipe are both sheathed on the extraction pipe, and the inner diameter of the left flow division pipe and that of the right flow division pipe are both greater than that of the extraction pipe so as to form a slurry passage among the left flow division pipe, the right flow division pipe and the extraction pipe; and a grouting insertion pipe is inserted into the extraction pipe. Through the gas extraction center divided-flow type grouting and hole sealing device, more effective grouting and hole sealing of drilling holes in the hole sealing section can be realized, and the generation and the propagation of leakage cracks around the drilling holes can be better prevented. The invention also provides a hole sealing method by using the gas extraction center divided-flow type grouting and hole sealing device. Through the method, high stress regions are produced around the drilling holes in the hole sealing section, the permeability of coal around the drilling holes in the hole sealing section is reduced, and the purpose of effectively grouting and sealing the drilling holes in the hole sealing section is realized.

The present application relates to the field of building materials, and specifically discloses a super high-rise self-compacting concrete and a construction process thereof. The super high-rise jacking self-compacting concrete includes the following components in parts by weight: 395-434 parts of cement, 46-68 parts of fly ash, 65-98 parts of slag powder, 9.7-15 parts of silica fume, 12.1-17.6 parts of admixture, 165-188 parts of water, 0-324 parts of river sand, 570-842 parts of machine-made sand, and 821-861 parts of stones; the content of stone powder in the machine-made sand is ≤12%; the construction process is: S1, preparing concrete, S2, Concrete transportation and pumping, S3, curing. The super high-rise jacking self-compacting concrete of the present application has the advantages of good workability, good homogeneity, little loss over 3 hours, high crack resistance, high impermeability and strong carbonization resistance.

The invention relates to improved Venetian plaster and the application thereof. The improved Venetian plaster comprises the following components in parts by weight: 20-50 parts of sulphoaluminate cement, 20-35 parts of Portland cement, 0.2-1 part of water reducer, 1.5-4 parts of silica fume, 1-4 parts of slag powder, 1-3 parts of coal ash, 0.1-1 part of thickener, 1-4 parts of redispersible powder, 20-35 parts of silica sand powder, 0-5 parts of organic color paste and 0-5 parts of inorganic color powder, wherein the ratios of the slag powder and coal ash to the total weight are both greater than or equal to 2%. The improved Venetian plaster disclosed by the invention has good water resistance, oil resistance and weather fastness, is safe, environment-friendly, durable, elegant and luxury, has unique artistic decoration effect, can replace traditional coating and tiles, and can be applied to inner wall decoration of buildings.

The invention discloses a toughening and corrosion-resistant concrete additive, which is characterized in that it comprises the following raw materials in mass percentage: mineral powder 30-40%, silicon micropowder 30-40%, polypropylene fiber 6-12%, modified furan resin 6‑12%, silane coupling agent 0.1%‑0.2%, p-toluenesulfonic acid 0.1‑0.2%, sodium sulfate 4%‑8%. The invention can significantly improve the toughness and corrosion resistance of concrete through the synergistic effect of silicon micropowder, polypropylene fiber and furan resin, the raw materials are easy to obtain, the preparation process is simple, the construction is simple, and the addition of thermosetting resin can reduce the loss of cementitious materials. consumption, reducing construction costs.

The invention discloses a reinforcing pumping admixture for concrete. A preparation method of the reinforcing pumping admixture comprises the following steps of firstly preparing a rheological agent,wherein the rheological agent is prepared from the following raw materials in parts by weight: 20 to 30 parts of magnesium aluminum silicate, 5 to 10 parts of bentonite, 3 to 5 parts of dihydroxyl polydimethylsiloxane, 2 to 5 parts of maleic anhydride, 1 to 2 parts of tetramethyldivinyldisilazane and 20 to 30 parts of durene. The uniformity of slurry of the concrete which is provided by the invention and into which the reinforcing pumping admixture is added is enabled to subsequently become good; the viscosity is decreased; the flow speed of pulp becomes quick; the suspension property of an aggregate in the concrete is enhanced; the bottom deposition phenomenon cannot occur within a longer time; the pulp is enabled to more uniformly enwrap the aggregate and the rheological agent in the reinforcing pumping admixture is used for ameliorating the flowability of the pulp.