107results about How to "Low incorporation" patented technology

The invention discloses a silicate cement grinding aid and a preparation method thereof. The silicate cement grinding aid is prepared from the following main raw materials by weight: 3-6 parts of sodium hexametaphosphate, 2-5 parts of aluminum sulfate, 5-8 parts of tetra sodium salt of amino trimethylene phosphonic acid (ATMP.Na4), 4-6 parts of ethylene diamine tetra (methylene phosphonic acid) sodium, 38-45 parts of polymeric alkylol amine, 34-42 parts of triisopropanolamine, 8-12 parts of waste engine oil, 2-5 parts of sodium alpha-olefin sulfonate, 10-16 parts of sorbitol, 15-20 parts of diethylene glycol, 8-13 parts of polypropylene wax, 6-10 parts of oxidized polyethlene wax, 4-8 parts of lignite wax, 20-30 parts of odium thiosulfate, 12-18 parts of sodium thiosulfate and 15-20 parts of quicklime powder. The prepared silicate cement grinding aid has the advantages that the quality is stable, the effect is remarkable, the adding amount is small, the use is simple, and the adding is more convenient and reliable to control.

The invention discloses a modifier of pitch for road and water-proofing material, which comprises the following steps: allocating with mass percent as 20-30% polypropylene, 3-10% epoxide resin, 8-10% polyethylene, 8-10% geoceric acid and 40-60% ethylene distearamide; mixing; stirring for 10-15 min; getting the product. This product possesses good stability and predominant water resistance, which can be fit for all of asphalt.

The invention discloses a green and environment-friendly brick for building and a new technology production mode for preparation of the green and environment-friendly brick for building, and the green and environment-friendly brick for building uses calcined oyster shell powder to replace part of expensive building raw materials such as lime, cement and the like. Compressive strength and dry density and other technical parameter requirements of a product are ensured, meanwhile mixing amounts of the cement and the lime are reduced, the production cost is reduced, the oyster shell powder is mixed for mixed grinding with tailing sand to prepare good-performance mortar, so that a tailing sand early-stage processing technology requires that the fineness needs to increase from 0.08 mm-sieve screen residue weight of 30% to 60%, the tailing sand processing time and processing power consumption are reduced, the energy is saved, oyster shell produced by coastal oyster breeding is effectively used and duly processed, and the environment is improved.

The invention discloses a preparation method of stable rubber modified asphalt and belongs to the technical field of modified asphalt. The preparation method comprises the following steps: adding SBS (Styrene Butadiene Styrene), rubber powder and a compatilizer into heated matrix asphalt, stirring, subsequently adding a stabilizer, shearing, and putting a sheared product into an oven for swelling, thereby obtaining the stable rubber modified asphalt. By adopting the preparation method of the stable rubber modified asphalt provided by the invention, the mixing amount of SBS is reduced, so that the cost of the modified asphalt is greatly lowered, the preparation process is simple and practicable, a prepared product is stable in property, can be stored for a long time in factories, and is applicable to large-scale application.

The invention provides a chlorine-free high-efficiency composite reinforcing type solid cement grinding aid and production method, the grinding aid is composed of inorganic substrate material, organic material and water, strong antifreeze and antirust; the inorganic substrate material is composed of powder coal ash, sodium carbonate and sodium silicate, the mixing solution of any three or four among triethanolamine, glycol, propanediol, glycerolor paper pulp waste liquid is selected as the organic material, the inorganic strong antifreeze is composed of aluminum sulfate, calces or sodium hydrogen, sodium acetate or carbamide, and the antirust is sodium dihydrogen phosphate. The production method is the following: first the inorganic strong antifreeze is utilized to perform the complexation and modification of the organic material solution, and then the obtained mixing solution and the inorganic substrate material are furthermore compounded, reacted, blended and crushed. The invention has simple process, low cost, wide application range, good anti-freezing anti-rusting functions, and can improve later strength of cement obviously without disadvantage influence, and also obviously reduce the using amount of cement clinker by 20 percent, thereby having outstanding economical benefit.

The invention discloses a production method of ready-mix pumped heavy concrete. The method comprises the following steps: preparing raw materials for heavy concrete: a binding material, coarse and fine aggregate, an additive and water; adding the binding material, coarse and fine aggregate and water into a mixer in a condition of continuous mixing of the mixer of a mixing plant, perform primary mixing for 3 to 60s, then adding the additive, performing secondary mixing, and ensuring that the time of secondary mixing is not smaller than 30s, so as to obtain the ready-mix pumped heavy concrete. According to the method, the ready-mix pumped heavy concrete is produced in a mixing plant through a mixing plant water reducer delay infiltration method, a polycarboxylic type high performance water reducer and barite aggregate, and through the adoption of the method, the dosage of the water reducer can be reduced by 8 to 25 percent, and the obvious economic benefit is produced.

The invention belongs to the technical field of concrete additives and in particular relates to preparation of macromonomer-diallyl polyethylene glycol (DAPEG) and a novel polycarboxylic acid water reducing agent prepared by using DAPEG as a raw material. The water reducing agent is prepared by carrying out heating reaction on the DAPEG, maleic anhydride (MA), sodium allyl sulfonate (SAS) or methyl sodium allyl sulfonate (MSAS), ammonium persulfate (APS), sodium hydroxide and water according to proper mass proportion by using nitrogen as shielding gas. In the invention, the polycarboxylic acid serial water reducing agent is prepared from the DAPEG for the first time, thus the variety of the polycarboxylic acid serial water reducing agent is enriched; and meanwhile, the prepared polycarboxylic acid serial water reducing agent has favorable performance, such as low doping amount, high water reducing rate, no delayed coagulation, low slump loss, and the like, thereby having more favorable market prospect and economic benefits.

The invention relates to a concrete composite water reducer, comprising a water reducer and a hydrophilic colloid. The concrete composite water reducer can improve the workability after using the water reducer, simultaneously an air entraining agent is added, a low-strength grade concrete with reasonable cost performance can be prepared by using a polycarboxylic acid water reducer, thus the problem of difficult popularization of the application of the polycarboxylic acid water reducer in the low-strength grade concrete.

The invention relates to a frost-resistant habitat base material for alpine region and a preparation method thereof, which are applied to the fields of slope ecological protective engineering, landscape greening engineering and the like. The method comprises the following steps: firstly, evenly mixing nanometer Al2O3, nanometer SiO2, jute fiber, palm leaf sheath fibers and a powdery air entraining agent, to obtain a mineral and vegetable fiber mixture; then evenly mixing the mineral and vegetable fiber mixture with concrete greening additive, organic matters and cement to obtain an admixture; and finally, mixing the admixture with dry soil, evenly stirring to obtain the frost-resistant habitat base material for the alpine region, and spraying the frost-resistant habitat base material to slopes by utilizing an air compressor. In the habitat base material, pore distribution is finer and more uniform, the fiber reinforcement network develops better, the capability of ecological protective engineering on resisting the frost damage can be effectively enhanced, and the frost-resistant habitat base material for alpine region has significant meaning to the popularization and application of the ecological protection technology in the alpine regions.

The invention discloses an electric furnace steel slag-based cement admixture or concrete admixture comprising the following components in parts by mass: 80-93 parts of ladle furnace refined steel slag, 2-8 parts of phosphogypsum, 5-12 parts of lithium slag and 0-0.2 part of an additive. The invention further provides a preparation method of the electric furnace steel slag-based cement admixture or concrete admixture and an application of the electric furnace steel slag-based cement admixture or concrete admixture in production and preparation of cement and concrete. The electric furnace reduction steel slag is utilized to the maximum extent, byproducts such as phosphogypsum and lithium slag are combined to serve as auxiliary components, the characteristics of self-hydration hardening andhigh adaptability are achieved, the superposition effect and synergistic efficient utilization of multiple kinds of waste are achieved, waste utilization is achieved, environmental protection is achieved, the cost is low, the cost performance is high, and the application prospect is wide.

The invention discloses a concrete composite anti-freezing agent and a preparation method thereof. The concrete composite anti-freezing agent comprises the following raw materials by mass: 15-30 parts of a water reducing component, 10-50 parts of an anti-freezing component, 1-3 parts of an early strength component, 0.1-0.3 part of an air entraining component, and 30-50 parts of water. The obtained composite anti-freezing agent is free of pungent smell; the doping amount in a cementing material is small; the composite anti-freezing agent is free ofchlorine and low in alkali, and has no corrosion effect on reinforced concrete; no flocculent substance overflows after the anti-freezing agent solution is stored at the temperature of -20 DEG C for 7 days; and the compressive strength ratio of the concrete composite anti-freezing agent at the temperature of -20 DEG C is obviously higher than the set requirement of -15 DEG C specified in JC457-2004.

The invention discloses a cement grinding aid for cement grinding and a preparation method thereof. The cement grinding aid comprises, by weight, 8-12 parts of ethanol amine, 6-8 parts of polyester polyol, 10-18 parts of polyol, 6-8 parts of ethyl acetate, 3-5 parts of cellulose, 18-24 parts of talcum powder, 12-16 parts of starch, 7-10 parts of borax, 5-7 parts of glass fiber, 10-15 parts of zincstearate, 4-6 parts of calcium lignosulfonate and 80-120 parts of water. When the cement grinding aid prepared by adopting the above raw materials is used in the process of cement grinding, power consumption can be saved, and cement yield, mass and performance can be improved. Experiments show that by using the cement grinding agent, machine-hour yield is increased obviously, doping amount of thecement grinding aid is lowered greatly, and cement strength can be excited.

The invention discloses a low-dosage asphalt regenerant and a preparation and application methods thereof. The regenerant comprises light oil, high-temperature coal tar fraction, a penetrating agent,a plasticizer, a lubricating agent and an anti-aging agent. The dissolving regeneration effect of the regenerant on the aged asphalt is improved by utilizing the high-temperature coal tar fraction andthe penetrant, and meanwhile, the performance of the regenerant is improved by doping multiple modifiers. The regenerant prepared by the invention can recover the component balance of the aged asphalt under the condition of low doping amount (5%-7%), so that the recycling of RAP is realized, and the waste is turned into wealth.

The invention relates to building materials, the invention particularly discloses a light thermal insulation material. The light thermal insulation material is prepared from the following components in parts by mass: 25 to 40 parts of cement, 5 to 15 parts of superfine slag powder, 1 to 5 parts of polyphenyl granules, 10 to 25 parts of metakaolin, 1 to 10 parts of fiber, 5 to 15 parts of tile slate tailings and 5 to 10 parts of an alkaline excitant. The preparation method of the light thermal insulation material comprises the following steps: 1, preparing materials, namely sieving tile slate tailings and the superfine slag powder to enable the tile slate tailings and the superfine slag powder to meet the particle size requirement; adopting hemp ropes, and preparing hemp rope fine fibers from the hemp ropes through shearing; 2, carrying out dry mixing on cement, superfine slag powder, polyphenyl granules, metakaolin, fibers, tile slate tailings and the alkaline excitant to obtain a mixture. The light thermal insulation material is light in weight, high in strength and suitable for popularization.