69 results about "Metakaolin" patented technology

This invention provides a soil stabilizer and its construction method, belonging to the field of road construction. The soil stabilizer comprises a water-reducing and densifying powder, a hydration-resistant stabilizing liquid agent, and a cementing material. By mass fraction, the water-reducing and densifying powder comprises 20-30% zeolite powder, 5-8% aluminum sulfate, 3-7% lithium carbonate, 2-4% silica fume, and the balance metakaolin. By mass fraction, the hydration-resistant stabilizing liquid agent comprises 5-8% polyamide resin, 3-5% alkyltrimethylammonium chloride, 2-4% organosilane coupling agent, 1-2% sodium lignosulfonate, and the balance liquid polyethylene glycol. The stabilizer of this invention consists of three main functional modules: the water-reducing and densifying powder, the hydration-resistant stabilizing liquid agent, and the cementing material. These components work synergistically to achieve efficient stabilization of silty soil.

The present application relates to the technical field of building materials, in particular to a thermodynamic modified material for grotto rock mass fissure grouting and a preparation method thereof, which comprises the following components in a mass ratio: lime-based material 100-200 parts; quartz sand 30-50 parts; metakaolin 30-70 parts; calcium aluminate expansive agent 10-20 parts.The present application has the advantages of optimized thermal conductivity, controlled thermal expansion coefficient, improved microstructure and comprehensive performance.The thermal conductivity of the lime-based grouting material is higher than that of traditional tung oil materials, reducing thermal stress concentration caused by temperature gradient;the thermal expansion coefficient can be changed from negative to positive by adjusting the water-cement ratio and the amount of expansive agent, and tends to be close to the limestone rock mass, reducing the risk of interface peeling;the optimized material has higher crystallinity and denser structure, reducing microfissures and improving heat conduction efficiency;while maintaining high mechanical strength and durability, the material realizes directional modification of thermodynamic properties, providing technical support for long-term preservation of grottoes.

The application discloses a kind of solid sealing chromium composite cementitious material and preparation method thereof, solid sealing chromium composite cementitious material includes the following mass percentage of substance: 65wt.%~75wt.% of clinker with heavy metal content, 20wt.%~34wt.% of poly-element auxiliary cementitious material, the rest is gypsum;Total chromium content in clinker with heavy metal content is greater than 150mg / kg;Poly-element auxiliary cementitious material includes the following mass percentage of substance: 30wt.%~50wt.% of microbial mineralization steel slag powder, 20wt.%~40wt.% of metakaolin, the rest is fly ash;Microbial mineralization steel slag powder is prepared by carbonic anhydrase producing bacteria and steel slag powder carbon fixation grinding.The application is based on the synergistic effect between clinker with heavy metal and the overall chemical composition of poly-element composite auxiliary cementitious material, and the pH value of solidified body is reduced by secondary hydration.

The application belongs to the technical field of geological compositions, and particularly relates to a fly ash-based high-density geological composition, a preparation method thereof and application thereof in road engineering. The fly ash-based high-density geological composition comprises the following components in mass fractions: fly ash 50-60 parts; slag 20-30 parts; metakaolin 7-12 parts; modified nano Al2O3 2-4 parts; modified polypropylene fiber 1.0-2.0 parts; silica ash 3-8 parts; alkali activator 30-40 parts; and water 15-20 parts. The application provides a fly ash-based geological composition which has normal-temperature bending strength, compressive strength and excellent freeze-thaw resistance.

The application discloses a light heat-insulation material, which uses silicate cement as a basic material of the light heat-insulation material, uses hydrogen peroxide as a foaming agent, uses sodium dodecyl benzene sulfonate as a surfactant, reduces the surface tension of bubbles, uses calcium stearate as a foam stabilizer, uses PP fiber to improve the flexibility of the material, and adjusts the addition amount of metakaolin to obtain the light heat-insulation material, which meets the use requirements of porosity, thermal conductivity and compressive strength. Compared with the same material in the prior art, the raw material composition is simple, the preparation process is convenient, and production is efficient. In addition, if the addition amount of metakaolin is too low, the compressive strength of the light heat-insulation material is insufficient, and if the addition amount of metakaolin is too high, the porosity of the light heat-insulation material is too low and the thermal conductivity is too high. Therefore, compared with 100 parts by weight of the silicate cement, the addition amount of metakaolin needs to be controlled in a range of 36 parts by weight to 73 parts by weight.

The application discloses an acid-activated regenerated brick-mixed micro-powder-metakaolin geopolymer battery and a preparation method thereof. The geopolymer battery is formed by sequentially stacking and pouring a geopolymer positive electrode layer, a geopolymer electrolyte layer and a geopolymer negative electrode layer. The three layers all comprise regenerated brick-mixed micro-powder and metakaolin. The preparation method comprises the following steps: preparing geopolymer positive electrode layer slurry, geopolymer electrolyte layer slurry and geopolymer negative electrode layer slurry respectively; sequentially pouring the positive electrode layer, the electrolyte layer and the negative electrode layer, and vibrating and standing each layer after pouring according to preset parameters, and arranging copper-plated steel fibers in the whole structure by a magnetic field; and curing and coating the whole structure. The geopolymer battery has excellent conductivity, load capacity and interlayer bonding strength, and the whole structure is stable.

This invention discloses a steel slag cement stone phase change material and its preparation method. The steel slag cement stone phase change material comprises the following components by weight: 50-65 parts cement matrix; 15-25 parts phase change temperature-regulating steel slag filler; 15-25 parts phase change temperature-regulating mineral filler; the phase change temperature-regulating steel slag filler comprises the following components by weight: 10-15 parts steel slag powder, 3-6 parts first phase change material, and 2-4 parts graphene powder; the phase change temperature-regulating mineral filler comprises the following components by weight: 8-12 parts metakaolin, 3-6 parts second phase change material, and 2-4 parts hexagonal boron nitride. The phase change composite material of this invention can absorb and release heat in different phase change temperature zones to delay road surface heating and reduce peak temperature; the phase change material has high encapsulation efficiency and is not prone to leakage during the melting period; at the same time, it maintains or improves the mechanical strength, wear resistance, and thermal conductivity of the cement matrix, thereby meeting the requirements of road engineering construction and service.

This invention discloses an early-strength, high-crack-resistant cementitious material suitable for water conveyance tunnel linings. It is composed of nano-silica, metakaolin, granulated blast furnace slag powder, cement, fly ash, limestone powder, and waste alumina whiskers. By controlling the particle size distribution of each component, the overall particle size distribution curve closely matches a pre-set mathematical model, thus achieving multi-scale filling from nanometer to micrometer scales. The early-strength, high-crack-resistant cementitious material, after uniform mixing of all components, exhibits a 3-day compressive strength >32 MPa and a flexural strength >5.6 MPa; a 28-day compressive strength >58 MPa and a flexural strength >9.0 MPa. Using standard mortar mix proportions, a circular restraint cracking test was conducted, and the 28-day crack width was controlled within 0.2 mm. This material combines rapid early strength development, excellent volume stability, and outstanding crack resistance, making it suitable for strongly restrained structural engineering.

This invention discloses a microcapsule-modified self-healing mortar, its preparation method, and its application, belonging to the technical field of stone cultural relic protection and restoration materials. The microcapsule-modified self-healing mortar, by mass percentage, comprises the following dry materials: 50%-70% hydraulic lime, 12%-24% nano-kaolin, 15%-25% quartz sand, 0.05%-0.2% additives, and 0.25%-2% microcapsule powder; wherein the core material of the microcapsules in the microcapsule powder is tung oil, and the wall material is barium alginate. The microcapsule-modified self-healing mortar possesses high weather resistance, excellent compatibility, and long-term durable self-healing function. By introducing tung oil-barium alginate microcapsules, the microcapsule-modified self-healing mortar synergizes with traditional restoration mortar raw materials, enabling the mortar material to trigger active repair components in the early stages of deterioration, achieving self-healing and self-repair effects.

The application discloses a kind of based on metakaolin-slag integrated geopolymer's solidified soft soil and preparation method thereof, it is related to soil solidification technical field.The soft soil curing agent includes the precursor of metakaolin and slag, and the solid alkali activator of calcium oxide and sodium bicarbonate composition.Preparation method includes: the precursor is mixed with solid alkali activator according to proportion to obtain curing agent;Curing agent is incorporated into soft soil, and water is stirred to obtain slurry;Slurry is cured and formed.The application generates sodium hydroxide by in-situ reaction of calcium oxide and sodium bicarbonate to excite precursor polymerization, and generates calcium carbonate to fill pores.The application uses solid alkali activator to replace traditional liquid activator, avoids environmental pollution, simplifies construction operation, and the prepared solidified soft soil has excellent early compressive strength and continuously growing long-term strength, realizes the resource utilization of industrial waste.

The application discloses an inorganic copolymer anticorrosive paint and a preparation method thereof, and relates to the technical field of paints. The inorganic copolymer anticorrosive paint comprises the following raw materials in parts by weight: 20-30 parts of silica sol, 8-15 parts of sodium hydroxide, 30-45 parts of metakaolin, 8-20 parts of quartz sand, 15-25 parts of water, 0.3-2 parts of sodium polyacrylate, 0.2-3 parts of polydimethylsiloxane emulsion, 5-12 parts of modified nanometer titanium dioxide, 6-10 parts of modified epoxy resin, 10-25 parts of hydroxyethyl methacrylate, 5-10 parts of zinc phosphate, 3-8 parts of aluminum tripolyphosphate and 2-6 parts of red iron oxide. The inorganic copolymer anticorrosive paint has scientific raw material proportioning, and the anticorrosive performance is enhanced through the modified nanometer titanium dioxide and the epoxy resin. In the preparation, step-by-step feeding and ultrasonic dispersion are adopted to ensure that the materials are uniform, and vacuum degassing and nitrogen protection are adopted to improve the stability. The silica sol, the zinc phosphate and other components have a synergistic effect, a dense coating is formed, the anticorrosive performance is high, the construction performance is good, and the inorganic copolymer anticorrosive paint is suitable for various scenes.

The application discloses a low-temperature early-strength low-density cement-based material for deepwater cementing and a preparation method thereof, and the cement-based material comprises 54-70wt% of cementitious material, 20wt% of active material, 3-6wt% of strength enhancing material, 5-15wt% of density adjusting material, 1-3wt% of fluid loss additive and 1-2wt% of dispersant in percentage by weight; the cementitious material is prepared by mixing G-grade oil well cement and superfine portland cement at a mass ratio of 7:3; and the active material is prepared by mixing metakaolin and microsilica at a mass ratio of 1:1. The application is prepared by using solid waste as raw material, which helps to reduce environmental pressure, has the characteristics of green environmental protection, low cost and the like. The cement-based material prepared by the application has good engineering performance in a low-temperature environment, fast early-strength development, micro-expansibility, short setting time and strong anti-channeling capacity.

The application discloses a geopolymer gel antique exterior wall plastering mortar and a preparation method thereof. The geopolymer gel antique exterior wall plastering mortar is composed of the following components in mass: 75-85 parts of metakaolin-based geopolymer gel; and 15-25 parts of a mixture of molybdenum sulfide salt / tungsten sulfide salt. The preparation method comprises the following steps: preparing the metakaolin-based geopolymer gel; preparing the flaky stacked mixture of molybdenum sulfide salt / tungsten sulfide salt; adding the mixture of molybdenum sulfide salt / tungsten sulfide salt into the metakaolin-based geopolymer gel; and high-speed dispersing to obtain the metakaolin-based geopolymer gel antique exterior wall plastering mortar containing molybdenum sulfide salt / tungsten sulfide salt. The mixture of molybdenum sulfide salt / tungsten sulfide salt is creatively added into the geopolymer gel, and the obtained metakaolin-based geopolymer gel antique exterior wall plastering mortar can effectively improve the mechanical properties and solve the problems of color difference and wear resistance.

The application discloses a kind of bio-based hybrid polymerization water-repellent cementitious materials and preparation method thereof, belong to building material technical field, solve the problem that traditional cement-based cementitious material is easy to scatter in water, pollute environment and low later strength when used for underwater construction, the water-repellent cementitious material is composed of the following mass parts of raw materials: 100 parts of fast hardening cement, 25-50 parts of stone powder, 25-50 parts of fly ash, 10-15 parts of silica powder, 25-35 parts of metakaolin, 0-10 parts of nano clay, 1-2 parts of water reducing agent, 0.5-5 parts of starch, 30-60 parts of water, 5-10 parts of organic monomer, 0.05-0.3 parts of initiation system and 0.005-0.05 parts of crosslinking agent.The water-repellent cementitious material prepared by the application has good dispersion resistance and water repellency underwater, maintains the integrity of components to facilitate the full hydration reaction, and has higher mechanical compressive strength.

This invention discloses a microcapsule polymer grouting material and its preparation method, as well as a two-stage triggered grouting method, belonging to the field of engineering materials and crack repair technology. The invention includes a grout and a polymethylene polyphenyl polyisocyanate; the grout consists of a first polyether polyol, sustained-release microcapsules, a rigid foam crosslinking agent, a modifier E51, water, a foaming catalyst, nanocellulose, and metakaolin. This invention introduces sustained-release microcapsule technology into the grouting material, storing the key reactant polyether polyol and creating a stepwise secondary reaction mechanism. This design effectively extends the workability of the grouting material and ensures initial permeability; more importantly, its sustained-release characteristics endow the material with the ability to continuously track and adaptively fill active cracks, achieving a leap from passive sealing to active tracking, greatly improving the durability and reliability of the repair effect.

Cement compositions including ordinary Portland cement, a secondary cementitious material (SCM) including one or more of pozzolan, metakaolin, limestone, or gypsum in an amount of up to approximately 70% of a replacement level of ordinary Portland cement, and between approximately 0.05% by weight of cement (bwoc) and 2% bwoc of aggregates of mesoporous carbon nanoparticles (3DG) carbons. The cement compositions regulate nucleation and time-lapsed growth of calcium silica hydrates during initial hydration. The 3DG carbons include aggregates of mesoporous carbon nanoparticles, which include one or more interconnected bundles of electrically conductive graphene layers. The 3DG carbons include oxygen containing functional groups disposed on one or more of the surfaces of the 3DG carbons or within the 3DG carbons.

This invention discloses a method for preparing and applying a lead-zinc tailings-based geopolymer-based eco-friendly soil, belonging to the field of building materials technology. The main components of the eco-friendly soil material of this invention include: 90-95 parts by weight of lead-zinc tailings, 5-20 parts by weight of an activity regulator, 8-15 parts by weight of a composite alkali activator, and 3-8 parts by weight of a water-retaining and air-permeable modifier. The solid-liquid ratio of the solid components to water is 35%-55%. The activity regulator is one of metakaolin, slag, or steel slag; the water-retaining and air-permeable modifier is one of diatomaceous earth, zeolite powder, or straw fiber; and the water glass modulus in the composite alkali activator is 1.2-1.6. Compared with traditional cement-stabilized soil, the eco-friendly soil prepared based on the above components has advantages such as low carbon and environmental protection, low cost, multifunctionality, replicability, and scalability.

Non-hydraulically reactive blended particulate compositions for use in making low carbon blended cement or low carbon concrete include a pozzolanic component having a first D90 and a mineral filler component having a second D90 greater than the first D90 dry blended without intergrinding, wherein the composition is free of hydraulic cement. The pozzolanic component can have a D90 less about 45 μm and the mineral filler can have a D90 greater than about 45 μm. The pozzolanic material can be fly ash, bottom ash, metallurgical slag, silica fume, metakaolin, volcanic ash, natural pozzolan, calcined shale, calcined clay, and / or ground glass. The mineral filler component can be aggregate fines, quarry fines, limestone powder, granite fines, stone dust, rock dust, marble dust, mine tailings, pulverized bottom ash, pulverized metallurgical slag, ground recycled concrete, pulverized shale from shale oil extraction, or pulverized sand from tar sand extraction.

The application discloses a geopolymer-based high-wear-resistance adhesive special for a medium-low-temperature denitration catalyst, and belongs to the technical field of catalyst preparation. The preparation method of the adhesive comprises the following steps: (1) taking metakaolin and fly ash as silico-alumina raw materials, adding a basic activator solution with a modulus of 1.0-1.6, controlling the liquid-solid ratio to be 0.30-0.45, and stirring and reacting at room temperature to obtain a reaction product; and (2) placing the reaction product obtained in the step (1) in a thermostat and curing at 60-80 DEG C to obtain the geopolymer-based high-wear-resistance adhesive special for the medium-low-temperature denitration catalyst. The catalyst prepared by using the adhesive can realize the synergistic improvement of mechanical strength, environmental adaptability and catalytic activity, and provides a long-life and high-reliability solution for high-dust, high-humidity and wide-temperature-window industrial flue gas treatment.

This invention relates to the field of green building materials technology, and discloses a porous lightweight geopolymer cement and its preparation method, comprising the following raw materials in parts by weight: 55.0-70.0 parts metakaolin, 30.0-45.0 parts granulated blast furnace slag powder, 70.0-90.0 parts composite alkali-activated liquid, 6.0-12.0 parts waste cooking oil, 0.6-2.0 parts photovoltaic cutting silicon waste slag, and 1.5-4.0 parts waste polyester plastic powder. This invention aligns with the concept of a circular economy, achieving complete solid waste treatment of raw materials through the synergistic utilization of industrial and domestic wastes such as metakaolin, granulated blast furnace slag powder, waste cooking oil, photovoltaic cutting silicon waste slag, and waste polyester plastic powder. This promotes the resource utilization of solid waste and reduces production costs. Simultaneously, by using a geopolymer room-temperature or self-heating curing process to replace the high-temperature calcination process of traditional Portland cement, energy consumption and CO₂ emissions are significantly reduced, resulting in a novel green cementitious material with both high performance and low-carbon environmental protection characteristics.

The application belongs to the technical field of oil field chemical additives, and provides a fluid loss additive for oil well cement and a preparation method thereof.The fluid loss additive for oil well cement comprises raw materials, i.e., a high molecular polymer, a composite hydration agent, an additive, deionized water and potassium persulfate; the high molecular polymer is formed by graft polymerization of sulfonated polyether sulfone, acrylonitrile, hydroxyethyl methacrylate and sodium allyl sulfonate monomers; and the composite hydration agent is formed by compounding and cross-linking of TPEG-2400, silica ash, metakaolin and polyethylene glycol diacrylate.The preparation method comprises the following steps: mixing the above raw materials, and obtaining the fluid loss additive after constant temperature stirring reaction.The fluid loss additive for oil well cement can utilize the synergistic effect among raw materials, improve the temperature resistance and salt resistance of the fluid loss additive, the fluid loss performance and the cement stone strength, and has the advantages of simple preparation process, easily obtained raw materials, controllable cost, suitability for industrialized scale-up production, adaptability to cementing operation in deep well, ultra-deep well and high salinity environment, etc.

This application provides a low-alkalinity composite phosphorus-fluorine curing agent for phosphogypsum and its preparation method. The composite phosphorus-fluorine curing agent comprises the following raw materials in parts by weight: 100 parts by weight of granulated blast furnace slag powder, 30-60 parts by weight of modified metakaolin, 10-20 parts by weight of silica fume, 2-10 parts by weight of inorganic coagulant, 0.1-1 parts by weight of chelating and dispersing agent, 0.1-0.3 parts by weight of dodecylbenzenesulfonic acid, 0.15-0.3 parts by weight of sodium citrate, and 0.05-0.15 parts by weight of hydroxypropyl methylcellulose ether. The modified metakaolin is obtained by coating amorphous aluminum hydroxide onto the surface of metakaolin using a urea hydrolysis precipitation method. By synergistically introducing surface-functionalized modified metakaolin and a process control agent network into the composite curing agent system, the rapid formation of an early dense microstructure can be simultaneously promoted while ensuring good workability of the slurry. This results in improved early strength, long-term stability, erosion resistance, and control of harmful ion leaching risk in the obtained cured body.

The application discloses a kind of high toughness low shrinkage concrete and preparation method thereof.The concrete is composed of cementitious material system, aggregate, modified fiber and auxiliary material;Cementitious material system includes cement, mixed mineral admixture and micro-expansion component, mixed mineral admixture is metakaolin and zeolite powder compound, and micro-expansion component is calcium sulphoaluminate mineral powder;Modified fiber includes basalt fiber surface modified by silane coupling agent and polyvinyl alcohol fiber compound system.The preparation method of the application includes fiber modification, mixed mineral admixture activation, stirring, pouring molding and maintenance and the like steps.The concrete of the application has low shrinkage, high toughness and excellent mechanical properties, and can be widely used in building structure, bridge engineering and prefabricated component field.

The application relates to the technical field of concrete materials and durability engineering, in particular to a composition for inhibiting the alkali-silica reaction of concrete and a method for preparing concrete. The composition comprises: a portland cement and a doping component selected from one or more of ceramic polishing residues, rice husk ash, metakaolin, rubber powder, silica fume, fly ash, polypropylene fiber, and the content of the doping component is 0.1%-25% based on the total mass of the composition. The composition can balance the inhibiting effect on the alkali-silica reaction of concrete and the mechanical properties.

The application discloses an organic activated nano-partial kaolin modified cement-based rapid repairing material and a preparation method and application thereof, and belongs to the technical field of building materials. The rapid repairing material comprises the following components in percentage by weight: 37.1-40.4% of Portland cement, 39.8-40.8% of sand, 0.4-2.9% of nano-partial kaolin, 0.02-0.08% of triethanolamine, 1.2-2.04% of butyl benzene copolymer emulsion SBE, 0.79-3.11% of aluminum sulfate octadecahydrate and the balance of water. The repairing material is constructed by introducing the aluminum sulfate octadecahydrate, the triethanolamine, the nano-partial kaolin and the butyl benzene copolymer emulsion, a multi-component synergistic system is formed, the early strength is high, the interface bonding performance is excellent, the rapid hardening can meet the open traffic demand, the debonding and cracking of the repairing layer are inhibited, and the durability is good. The material has good fluidity and suitable construction time, raw materials are easy to obtain, the cost is low, the process is simple, and the material is suitable for engineering popularization and application.

The application discloses a kind of based on geopolymer modified asphalt's road crack's quick repair method, using based on geopolymer modified asphalt as repair material;Based on geopolymer modified asphalt with SBS modified asphalt as base material, geopolymer modified powder as modifier, according to following weight parts are made: SBS modified asphalt 94~96 parts, geopolymer modified powder 4~6 parts;Wherein, geopolymer modified powder is made of the following materials: water glass, NaOH solution, metakaolin, slag powder, silica powder, steel slag powder, water.Compared with ordinary asphalt mixture, the modified asphalt of the application has better high-temperature heat-resistant dynamic stability, anti-cracking ability, high-life durability, which can effectively prevent the rut, push, water damage problems of asphalt pavement early.The quick repair method of the application has the characteristics of quick construction, good effect and low cost, and realizes the resource recycling of new industrial waste, and opens up a new direction for asphalt modification.

The invention discloses a ceramic glaze for painting and a preparation method thereof, and relates to the technical field of ceramic glazes, the ceramic glaze comprises the following raw materials: a basic glaze, a pigment, a fluidity regulator, a color stabilizer, a fluxing agent, a defoaming agent, a binder, a core functional group and an auxiliary synergistic component; the core functional component is prepared by compounding nano hydroxyapatite, polyether modified polysiloxane, rare earth oxide, nano silicon nitride and diethylene glycol monobutyl ether according to the mass ratio of (3 to 8): (1 to 3): (2 to 6): (2 to 5): (3 to 7); the auxiliary synergistic component is prepared by compounding sodium citrate, spodumene powder, metakaolin and sodium pyrophosphate according to the mass ratio of (0.2 to 0.5): (2 to 5): (3 to 6): (0.1 to 0.3). The ceramic glaze is high in color rendition degree, good in painting fluency, low in glaze defect rate and excellent in thermal stability.

The present application relates to the field of cementitious materials, and particularly relates to a composite activator for cement mixing pile, a preparation method thereof, low-carbon cementitious material and application thereof; the composite activator comprises 60%-75% of inorganic activation main body and 25%-40% of organic activation synergist; the inorganic activation main body comprises sodium hydroxide, sodium sulfate, metakaolin and nano silicon dioxide; the organic activation synergist comprises modified lignin sulfonate, modified potassium humate and modified corn straw biochar; a core-shell structure is formed with the inorganic activation main body component as the core and the organic synergist component as the shell; the inorganic core provides continuous activation power and ensures the activation efficiency of solid waste; the organic component and the inorganic component are directionally chemically bonded, which prevents inorganic particle agglomeration, realizes uniform dispersion of the activation component, solves the agglomeration and uncontrolled activation of the traditional activator; the organic shell slowly releases the inorganic activation component, controls the hydration rate, adapts to construction, improves the interface affinity with soft soil and solid waste, and reduces interface defects and shrinkage cracks.

This invention discloses a composite admixture and its preparation method, as well as a method for preparing concrete pipe piles. The composite admixture comprises submicron-sized metakaolin, ultrafine quartz sand powder, slag powder, calcium formate, sulfate activator, water-retaining and toughening component, auxiliary setting regulator component, and superplasticizer; wherein, by weight percentage, the submicron-sized metakaolin is 12%-18%, the ultrafine quartz sand powder is 22%-30%, the slag powder is 35%-45%, the calcium formate is 2.5%-4.0%, the sulfate activator is 7%-11%, and the water-retaining and toughening component is 2.0%-4.0%; the median particle size D50 of the submicron-sized metakaolin is 1.0μm-3.0μm, and the specific surface area is ≥1200m² / kg; the water-retaining and toughening component is a mixture of redispersible latex powder and cellulose ether in a mass ratio of (2:1)-(1:1). This invention, through multi-component synergy, significantly improves the early strength, later strength, durability, and crack resistance of concrete under low-temperature steam curing conditions of 40℃-60℃, which can simultaneously meet the differentiated performance requirements of PHC piles and large-diameter pipe piles, and greatly reduce production energy consumption.

The application relates to the field of building materials and particularly discloses waterproof high-bonding mortar and a preparation method thereof. The waterproof high-bonding mortar is prepared from the following raw materials in parts by weight: cement 350-450 parts, quartz sand 450-550 parts, active filler 60-80 parts, bonding agent 8-16 parts, early strength agent 4-8 parts, fibrous material 3-6 parts and water-repellent agent 1-3 parts; the active filler is composed of modified metakaolin and redispersible glue powder; the preparation method comprises the following steps: S1, uniformly mixing cement, quartz sand, fibrous material and active filler; and S2, uniformly mixing the bonding agent, the early strength agent and the water-repellent agent; the preparation process is simple, the prepared mortar has good waterproofness and bonding strength, is suitable for use in a humid environment, is not prone to water seepage and falling-off, and has good stability in adhesion to a brick material and a stone veneer.