76 results about "Efflorescence" patented technology

The invention discloses a method for quantifying response of two carbon utilization modes of microalgae to weathered carbon sink of magnesium-containing silicate rock, which comprises the following steps: culturing two groups of microalgae under the same culture condition, adding magnesium-containing silicate rock and microalgae into one group, and setting an inhibitor (AZ / DIDS) added with a certain carbon utilization mode as an experimental group; and only magnesium-containing silicate rock and microalgae are added into one group as a blank group without adding an inhibitor (AZ / DIDS) of a certain carbon utilization mode. Setting the treatment group added with AZ (10mM) and DIDS (2mM) as an experimental group, and subtracting the weathering quantity of the magnesium-containing silicate rocks in the treatment group not added with AZ / DIDS and the treatment group added with AZ / DIDS to obtain the weathering quantity delta Ti of the magnesium-containing silicate rocks under the influence of the microalgae anion channel utilization mode, namely delta Ti = Ti-Ti (AZ / DIDS), and rock weathering carbon sink Qi = delta Ti under the influence of the microalgae anion channel utilization mode. Fitting a polynomial function Q = Q (i) to obtain the response function of the microalgae extracellular carbonic anhydrase mode or the microalgae anion channel utilization mode to the weathering carbon sink of the magnesium-containing silicate rock. According to the method, the rock weathering carbon sink quantity under the influence of two carbon utilization modes of the microalgae can be rapidly and accurately obtained. The invention provides the method for quantifying the response of the two carbon utilization modes of the microalgae to the weathered carbon sink of the magnesium-containing silicate rock so as to overcome the defect that the response of the two carbon utilization modes of the microalgae to the weathered carbon sink of the magnesium-containing silicate rock cannot be quantified in the prior art.

The invention discloses a method for mineralizing, reinforcing and protecting weathered sandstone cultural relics through carbon sequestration bacteria, and belongs to the technical field of cultural relic protection and restoration. In order to solve the problems of residue of deliquescent anionic salt and generation of bad byproduct ammonia gas in the existing technology for reinforcing and protecting sandstone cultural relics by microbial mineralization, the reinforcing depth and strength are improved in a lower-carbon and higher-efficiency manner, and an aspartic acid chelated calcium liquid containing low-solubility active magnesium oxide is effectively permeated into weathered sandstone; the carbon capture and nucleation effects of the bacillus mucilaginosus with the carbon sequestration function are utilized, on one hand, carbon dioxide in air is captured and converted into carbonate needed by mineralization, on the other hand, carbonate in an ammonium carbonate solution which is easy to volatilize and decompose is locked and used for carbonate mineral crystallization, and meanwhile ammonium ions are inhibited from being converted into ammonia gas to overflow; calcium carbonate and basic magnesium carbonate are induced to be subjected to intercrystallization nucleation, and a high-strength cementation structure is formed in pores of the weathered sandstone and is used for permeating, reinforcing and protecting the weathered sandstone cultural relics.

Water-based compositions that are resistant to dirt pickup, efflorescence, tannin bleed-through and surfactant leaching are described. The water-based composition includes a latex or water-dispersible polymer and a non-VOC UV-VIS (preferably, ultraviolet) absorber as a dirt pickup resistance additive. Methods of making water-based compositions including a non-VOC UV-VIS absorber as an additive are also described.

The invention provides a foam-producing dispersion liquid as well as a preparation method and application thereof. The foam-producing dispersion liquid is prepared from the following raw materials: polyacrylamide, weathered coal, a betaine type surfactant and water.

The invention relates to the technical field of chemical engineering, in particular to an alkali efflorescence-resistant cement-based impervious coating material which comprises a base material and an active substance, and the base material comprises, by weight, 60-70 parts of a cementing material, 30-40 parts of an auxiliary cementing material and 40-60 parts of aggregate. The active substances comprise 1-1.5 parts of a precipitator, 2-3 parts of a complexing agent, 1-1.5 parts of an early strength agent, 4-6 parts of a calcium ion compensating agent, 1.5-2 parts of a dispersing agent and 1-1.5 parts of other auxiliaries. According to the method, alkali-aggregate reaction is reduced by means of not introducing alkali metal ions, the concentration of soluble calcium salt generated in the curing process is reduced through the pozzolanic effect generated when bulk industrial waste with high silicon content meets water, so that the adverse effect caused by saltpetering is reduced, and meanwhile, under the synergistic effect of various active substances, the curing effect is improved. The compactness and the impermeability of the coating are obviously improved.

The invention discloses an organic-inorganic acid excited geopolymer and a preparation method thereof, and belongs to the technical field of solid waste resource utilization. The organic-inorganic acid excited geopolymer is prepared from the following raw materials in parts by mass: 30 to 40 parts of mixed exciting agent, 30 to 50 parts of fly ash, 10 to 30 parts of metakaolin and 20 to 60 parts of second solid waste, the mixed exciting agent contains inorganic acid and organic acid. According to the invention, the characteristic that a large amount of strong alkali or strong acid needs to be added during alkali excitation and traditional inorganic acid excitation of geopolymers is overcome, and the potential safety hazard during site construction is relieved. The geopolymer gel is prepared by using low-risk organic acid to treat the solid waste, so that seepage and cracking can be prevented, a product with a more compact surface can be formed, the problem of weathering and saltpetering caused by the existence of Na and K in alkali excitation can be avoided, and the geopolymer gel has good application potential.

The invention provides special putty for wall saltpetering and a production method thereof, and relates to the technical field of building decoration materials. The special putty for the saltpetering of the wall surface comprises the following components in parts by weight: 25-35 parts of Portland cement, 15-25 parts of silica fume, 15-25 parts of composite quartz powder, 8-12 parts of modified bentonite, 3-7 parts of cellulose, 2-4 parts of capillary crystalline, 2-4 parts of a lubricant, 2-4 parts of a water repellent agent, 5-8 parts of an anti-alkali agent, 2-4 parts of a binder and 2-4 parts of an auxiliary agent, the composite quartz powder is formed by compounding quartz powder and modified quartz powder according to a mass ratio of 1: 1. The special putty for wall saltpetering can generate good moisture-proof and anti-saltpetering effects when being directly applied to a wall body, effectively inhibits the occurrence of the wall saltpetering problem, and is environment-friendly and convenient to construct; meanwhile, the production method disclosed by the invention is simple and feasible, and is suitable for large-scale industrial production.

This application relates to a method for jointly reducing the expansibility of phyllite soil by using red clay and lime. The specific steps are as follows: adding dry red clay with a mass of m1 and lime with a mass of m2 to completely weathered phyllite with a mass of m0 for composite improvement. Denote m1 / (m0 + m1) as the mixing ratio λ of red clay, and denote m2 / (m0 + m1) as the lime content η, to form a mixed filler with a free swell ratio lower than 4% and a swelling force not greater than 125 kPa. The range of the mixing ratio of red clay in the mixed filler is 40% - 60%, and the range of the lime content is 3% - 5%. By incorporating a certain proportion of red clay and lime into phyllite soil, the present invention forms a composite improved soil, greatly reducing the swelling force and free swell ratio, and enabling the compacted subgrade soil to have a certain degree of compactness, making the compacted subgrade not easily pulverized, reducing dust, reducing the dosage of lime by incorporating red clay, and at the same time disposing of this special soil of red clay, reducing engineering waste.

The invention discloses an alkali efflorescence resistant concrete and a preparation method thereof, and belongs to the technical field of concrete, the alkali efflorescence resistant concrete comprises the following raw materials by weight: 50-70 parts of a cementing material, 30-40 parts of coarse aggregate, 35-45 parts of fine aggregate, 5-8 parts of a water reducer, 2-5 parts of boric acid, 10-15 parts of activated carbon, 5-8 parts of silica fume and 1-5 parts of nano silica. The preparation method comprises the following steps: uniformly mixing the cementing material, the coarse aggregate, the fine aggregate, the micro-silicon powder and the nano-silicon dioxide to obtain a mixture, then dissolving and dispersing the water reducing agent and the boric acid in water, uniformly mixing with the mixture, carrying out vibration compression molding, and carrying out normal-temperature maintenance to obtain the alkali efflorescence-resistant concrete. According to the invention, the overall performance of the concrete can be obviously improved, and the saltpetering phenomenon of the concrete is greatly reduced. The raw materials are easy to obtain, the preparation method is simple, and popularization and application are facilitated.

The utility model relates to the technical field of drainage structures, in particular to a same-floor drainage structure which comprises a floor layer, a drainage pipe, a mortar layer, a floor layer and a floor drain assembly, a floor drain groove is formed between the floor layer and the mortar layer, the floor drain assembly is installed in the floor drain groove, an upper drainage opening of the drainage pipe is located in the floor drain groove, and a lower drainage opening of the drainage pipe is located in the floor drain groove. An inner drainage pipe is installed in the floor drain assembly through threads, the lower end of the inner drainage pipe is inserted into the drainage pipe, the floor drain groove and the floor drain assembly are sealed, meanwhile, the floor layer and the mortar layer are sealed, and after use, the sealing cover covers the floor drain groove again. Therefore, after the floor drain assembly is mounted, the phenomenon of fault between the mortar layer and the floor layer can be avoided, the phenomenon that water enters the space between the mortar layer and the floor layer during subsequent drainage to cause the phenomenon of alkali efflorescence underground is effectively prevented, and the waterproof effect is effectively ensured.

The invention belongs to the technical field of building materials, and particularly relates to a performance strengthening preparation method for moderately and strongly weathered rock machine-made aggregate, and the preparation method comprises the following steps: S1, soaking weathered machine-made aggregate in a micro-acid etching solution and carrying out oscillation washing to form acid-pickled aggregate, S2, mixing strengthening powder, a reactant and water to form a mixed solution, and S3, carrying out spray drying on the mixed solution to obtain the moderately and strongly weathered rock machine-made aggregate. S3, under the conditions of certain temperature and negative pressure, putting the pickled aggregate into the mixed solution for dipping; and S4, dipping and curing the pickled aggregate, taking out the pickled aggregate, and curing the pickled aggregate to obtain the modified weathered machine-made aggregate. Through acidification and dipping filling treatment, the adverse effect of a weathered weak layer on the surface cohesiveness and the overall hardness of the aggregate is effectively weakened, pores existing in the weathered machine-made aggregate are reduced, the mechanical property is improved, and the application range of the weathered layer machine-made aggregate in engineering construction is expanded.

The invention provides an alkali efflorescence prevention and mildew prevention mortar wall body treatment process method, relates to the technical field of building materials, and comprises a mortar preparation system taking semi-hydrated phosphogypsum, a mildew prevention auxiliary agent, an alkali efflorescence prevention auxiliary agent, a retarder, a water reducing agent and an environmental response additive as raw materials, and a mortar wall body application process. The preparation process is characterized by comprising the following steps that a retarder and a water reducing agent are pretreated in a closed small stirring kettle with the volume being 50-100 L, four ultraviolet lamps with the wavelength being 254 nm are arranged in the small stirring kettle, the power of each ultraviolet lamp is 30 W, the output flow of an ozone generator is 1-2 g / h, a low-temperature plasma generator is of a double-dielectric barrier discharge structure, the electrode distance is 2-3 mm, and the low-temperature plasma generator is of a double-dielectric barrier discharge structure. The ozone concentration is 3-8 ppm, the plasma power is 50-100 W, the stirring speed is 150-250 rpm, and the treatment time is 10-20 minutes. According to the method, the retarder and the water reducing agent are sterilized by adopting an ultraviolet-ozone-plasma synergistic pretreatment technology, the surface hydroxylation degree is improved by 10-15%, and organic impurities and mold pollution sources are effectively removed.

The invention discloses outdoor wall cement mortar and a preparation method thereof. The cement mortar is prepared from 200 to 400 parts of a cementing material, 500 to 800 parts of sand, 20 to 50 parts of water-soluble acrylic resin, 80 to 150 parts of jade powder, 300 to 600 parts of a modified perlite thermal insulation material, 2 to 5 parts of a water reducing agent and 500 to 800 parts of water. Wherein the cementing material is obtained by mixing cement and waterborne polyurethane; the modified perlite thermal insulation material is obtained by reacting expanded perlite with a silane coupling agent under the action of an organic tin additive. The gel material disclosed by the invention is obtained by mixing cement and waterborne polyurethane, so that the compressive and abrasive strength of a mortar layer and the interface bonding force between mortar and a brick wall surface are improved; meanwhile, a modified perlite thermal insulation material is introduced into the mortar, so that the flowability and the thermal insulation property of the mortar are improved, and the saltpetering condition is inhibited.

The invention discloses a water-based inorganic composite thermal insulation coating and a production process thereof, and belongs to the technical field of building decoration materials, and the coating comprises a modified potassium silicate solution, epoxy functionalized aerogel coated microspheres, aminated porous sepiolite fibers and other components. Through in-situ cross-linking reaction of an epoxy group and an amino group, a three-dimensional cross-linked network structure is constructed in a coating, and the technical problems that in a traditional coating, microbeads are prone to breakage, the interface bonding force is weak, and alkali efflorescence and whitening are prone to occurring are effectively solved. The coating has the comprehensive effects of low heat conductivity coefficient, low water absorption rate, high bonding strength, good crack resistance and excellent durability.

The present invention relates to the technical field of solid waste recycling, and particularly relates to a solid waste-based sintered brick and a preparation method thereof. The raw materials of the solid waste-based sintered brick include 100 parts of solid waste, 0.5-1 part of sintering aid, 5-10 parts of nano microsilica powder, 10-20 parts of liquid water glass, and 10-20 parts of water; the solid waste includes 0-50 parts of red mud and 50-100 parts of ore powder; the preparation steps include mixing the solid waste and the sintering aid to obtain a premixed dry material; mixing the nano microsilica powder, the liquid water glass and the water to obtain an alkali-activated enhancer; adding the alkali-activated enhancer to the premixed dry material and stirring to obtain a gelling material; vibrating and molding the gelling material to obtain a green brick blank; drying the green brick blank to obtain a dried blank; and roasting the dried blank to obtain the solid waste-based sintered brick. The solid waste-based sintered brick prepared by the present invention has high strength and strong durability, does not produce obvious efflorescence phenomenon, and can realize the resource utilization of solid waste.

This invention discloses a high-toughness, efflorescence-resistant artificial stone slab and its preparation method. The high-toughness, efflorescence-resistant artificial stone slab includes a base layer and a surface layer. The base layer is inlaid with stainless steel mesh. By weight, the raw materials of the base layer include 120-210 parts of quartz sand, 7-13 parts of silica-alumina mineral material, 50-100 parts of cement, 1.8-2.5 parts of composite fiber, and 8-15 parts of water. The raw materials of the surface layer include 120-210 parts of quartz sand, 7-13 parts of silica-alumina mineral material, 2-7 parts of porous material, 50-100 parts of cement, and 8-15 parts of water. The artificial stone slab of this solution has the advantages of high flexural strength and efflorescence resistance. It can be installed on the wall by dry hanging, effectively avoiding the need for drilling holes for wall installation. This effectively reduces the likelihood of efflorescence and cracking after long-term use, which can lead to breakage in subsequent use.

The application discloses a beneficiation method of weathered ilmenite, and belongs to the technical field of mineral processing. The combined process of'stage iron selection + strong magnetic pre-concentration + multi-stage spiral chute separation + strong magnetic separation + suspension conical surface separation' is adopted to realize efficient recovery of the weathered ilmenite, and separation indexes of a concentrate grade of more than 46% and a recovery rate of 70-78% are obtained. The suspension conical surface separator can realize fine separation of the titanium-containing middlings, and compared with the conventional spiral chute and shaking table, the recovery rate of the ilmenite concentrate can be increased by 5-10 percent points, and the concentrate grade can be increased by more than 3 percent points. The application can avoid over-grinding, save the cost, improve the recovery efficiency, and has a wide application prospect.

The invention discloses a construction method of a fully weathered granite stratum tunnel grouting reinforcement model, and relates to the technical field of tunnel engineering. The method comprises the steps of tunnel model acquisition, stratum parameter acquisition and strength analysis, demand strength calculation, intelligent recommendation of a grouting reinforcement method, tunnel grouting reinforcement simulation and effect evaluation, and result verification and optimization. According to the method, a three-dimensional digital tunnel model is constructed, geometric characteristics such as the section shape, the spatial position and the burial depth of a tunnel are accurately described, and a stratum strength distribution diagram and a required strength distribution diagram are generated by combining stratum physical, mechanical and hydrological parameters; a reinforcement scheme recommendation model based on a deep neural network is introduced, a stratum strength distribution diagram and a demand strength distribution diagram are integrated, and the economy, the construction efficiency and the reinforcement effect of the scheme are further balanced through a multi-objective optimization algorithm.

The invention discloses a high-transparency high-adhesion self-cleaning stone surface super-hydrophobic polymer coating, which is prepared by mixing P (St-co-FDA)-b-P (DMA-co-KH570), a silane coupling agent, namely nano SiO2, and a polymer good solvent, the structural formula of the P (St-co-FDA)-b-P (DMA-co-KH570) is # imgabs0, a silane coupling agent is adopted, and nano SiO2 is prepared by heating, refluxing and reacting fumed silica nano particles, a silane coupling agent and an ethanol water solution under an acidic condition. After the surface of the natural stone is treated by the surface treatment agent, the surface of the natural stone has the functions of self-cleaning, dust prevention and light reflection prevention, and the effects of blocking moisture migration and salt and alkali diffusion can be achieved, so that various bad diseases such as water stains, saltpetering, rusty spots and cracks generated after the natural stone is in contact with cement mortar can be well avoided; the bonding strength can be improved, the service life of the natural stone, especially the natural stone for building decoration, is greatly prolonged, and very good economic benefits and application prospects are achieved.

The invention relates to a tailing-based low-temperature response type sewage adsorption material and a preparation method thereof. The method is suitable for solid waste resource utilization and sewage treatment material technology. The invention relates to a tailing-based low-temperature response type sewage adsorption material, which comprises gravel mine tailings containing SiO2 and Fe2O3; the upper-layer weathered material contains kaolin and montmorillonite; the binder is used for combining the tailings with the weathered material; siO2 in the tailings can interact with Al2O3 in the weathered material to form a [AlO4 / SiO4] tetrahedral network structure; fe2O3 in the tailings and montmorillonite in the weathered material can generate a Fe-O-Si bonding effect. The preparation method of the tailing-based low-temperature response type sewage adsorption material comprises the following steps: performing hydrochloric acid activation treatment on sand mine tailings; carrying out gradient mixing on the activated tailings and the weathered material, and carrying out ball milling in a mixing process; carrying out primary activation on the mixed material, and keeping for 2.5 hours at the temperature of 95 DEG C; after primary activation, secondary activation is carried out, and the temperature is kept at 115 DEG C for 1.2 hours.

The invention discloses high-strength household environment-friendly ceramic and a preparation method thereof. The preparation method comprises the following steps: S1, preparing modified red mud; s2, preparing modified coal gangue powder; s3, preparing a green ceramic blank; s4, preparing environment-friendly glaze slip; s5, preparing the high-strength environment-friendly ceramic. The high-performance domestic ceramic with high mechanical strength and excellent environment-friendly characteristic is successfully prepared by taking high-proportion industrial solid waste as a main raw material through a method of multi-component synergistic modification and in-situ self-generation of an enhanced crystal phase; according to the method, traditional low-efficiency inert waste materials such as the red mud and the coal gangue are converted into an in-situ precursor of a reinforced phase in a ceramic matrix, the technical problems of easy scumming, cracking, low strength and the like of high-solid-waste-mixing-amount ceramic are solved, the method is reasonable in process route design and low in cost, waste is turned into wealth, and the method is suitable for industrial production. And a brand new solution with a practical industrialization prospect is provided for high-value utilization of a large amount of industrial solid wastes.

The present application belongs to the technical field of solid waste treatment, and particularly relates to a kind of alkali-proof red mud-graphite tailings road base material and preparation method thereof.The red mud-graphite tailings road base material includes the following components by weight: 30-45 parts of red mud, 55-70 parts of graphite tailings, 2-3 parts of P·O 42.5 Portland cement, 3-6 parts of slag powder, 8-10 parts of phosphogypsum, 0.1-0.3 parts of polycarboxylate superplasticizer, 0.01-0.03 parts of modified MIL-101(Fe)-NH2, and 12-15 parts of water;The particle size of the graphite tailings is in the range of 7.5-11.2 mm, and the particle size of the red mud is ≤5 mm.The road base material not only solves the problem of heavy metal pollution existing in red mud-graphite tailings base material, but also effectively solves the problem that red mud-graphite tailings base material easily leads to alkali efflorescence of road base.

The application discloses a method for separating and recycling sandy and clayey components in fully weathered granite. The method first changes the physical state of the material by crushing and agglomerating the raw material and quantitatively spraying water to mature it; then realizes the separation of sand and clay through a double-shaft variable-speed stirring and rubbing equipment, and simultaneously uses a negative pressure exhaust system to preliminarily separate and dry the clay powder; after rubbing, the material is screened by a high-frequency flip-flow screen to prevent blocking and is centrifugally separated by a hydrocyclone group to obtain multi-stage clean sand and clay concentrate slurry; finally, the sand is dewatered, and the clay slurry and the collected clay powder are flocculated and pressure-filtered to be dewatered. The separated high-quality sand is used for roadbed filling and building sand, and the clay cake is used for seepage prevention and ecological engineering. The application realizes complete recycling and high-value utilization of fully weathered granite waste, and has the advantages of high efficiency, energy saving, environmental protection and strong operability, and has significant economic, environmental and social benefits.

Spray can with a fluorine-, water- and solvent-free, non-foaming, sprayable filling, containing (A) Propyltriethoxysilane (PTEOS), (B) dimethyl ether or a mixture of propane, n-butane and isobutane as propellant, (C) at least one clay mineral with an average particle size d 50 from 1 to 30 µm, (D) Corundum with an average particle size d 50 from 1 to 30 µm or a mixture of, based on the mixture, 10 wt.% to 99 wt.% corundum with an average particle size d 50 from 1 to 30 µm and 1 wt.% to 90 wt.% calcium magnesium carbonate and / or magnesium hydroxide with an average particle size d 50 from 1 to 30 µm and (E) at least one acid as catalyst and optionally containing (F) at least one solid, functional, organic, inorganic or organometallic additive with an average particle size d 50 from 1 to 30 µm, Process for their preparation, and their use for the production of fluorine-free, abrasion-resistant anti-graffiti coatings and functional coatings and impregnations with properties protecting against corrosion, weathering, water absorption and flying sparks on porous and non-porous substrates.

The present invention relates to a method for producing a composite material from a cementitious body, aggregate, and reinforcing material. The cementitious body is produced by preparing a starting product containing at least 20% by mass of one or more components from ultramafic rock, weathered ultramafic rock, olivine, and / or industrial waste; homogenizing the starting product; and hydrothermally treating the homogenized starting product in a heat treatment apparatus at a temperature exceeding 100°C for at least 12 hours. Furthermore, the bound water of the converted starting product is dehydrated by heat treatment and / or reactive grinding. Subsequently, the converted and dehydrated starting product is used as a binder, and hardening water is added for hardening. The water / binder ratio is 1:2 or less. Before, after, and / or simultaneously with the addition of hardening water, aggregate and reinforcing material are added to the converted and dehydrated starting product to improve its load-bearing capacity. The reinforcing material is resistant to pH values ​​below 11 and / or provides protection against pH values ​​below 11. Additionally or alternatively, additives to increase the pH value of the pore solution in the cementitious material can be added to the starting product of the cementitious material.

The invention discloses an admixture for inhibiting concrete efflorescence, which comprises the following components in percentage by weight: 40-70% of an active mineral admixture, 10-30% of a nano material, 5-20% of a water repellent and 0.5-10% of an auxiliary additive, the active mineral admixture is selected from one or more of fly ash, superfine slag powder, metakaolin and silica fume, and the nano material is selected from one or more of fly ash, superfine slag powder, metakaolin and silica fume. The nano material is selected from one or more of nano S < iO2 >, nano T < iO2 > and nano CaCO3. According to the admixture disclosed by the invention, the active mineral admixture, the nano material, the water repellent and the auxiliary additive are scientifically proportioned, so that the saltpetering resistance of concrete is remarkably improved, migration of soluble components is reduced by refining a pore structure, and a hydrophobic film is formed to block invasion of external water; the physical and mechanical properties of the concrete are also synchronously improved (for example, the compactness, the strength and the impermeability are improved, and the working performance is optimized), and meanwhile, industrial wastes and environment-friendly materials are adopted, so that the production cost is reduced, and the environmental pollution is reduced.

This invention relates to the field of solid waste treatment and resource utilization technology, and discloses a fly ash-based polymerized solidified body and its preparation method. The solidified body is formed by solidifying a slurry with an in-situ constructed organic-inorganic interpenetrating network structure. The slurry raw materials include Class F fly ash, activated magnesium oxide, a modified composite activating liquid containing sodium alginate, and a pre-saturated functionalized carrier. The carrier is a natural porous mineral adsorbed with a soluble calcium source. The preparation method includes preparing the modified activating liquid, premixing dry materials, depolymerizing the matrix, low-speed feeding of the carrier, and molding and curing. This invention utilizes the physical isolation and slow-release effect of the carrier to prevent flash coagulation of the slurry and preserve the construction window period, while using released calcium ions to induce in-situ gelation of sodium alginate, forming an interpenetrating network with the inorganic framework. The resulting solidified body exhibits high fracture toughness, excellent heavy metal locking ability, and resistance to efflorescence.

The present invention provides an anti-frost agent and a method for preventing efflorescence of clay bricks, which relates to the technical field of building material anti-frost. The anti-frost agent provided by the present invention includes separately packaged aluminum salts, water-based epoxy resin AB glue, and silane impregnating agent; the aluminum salts are inorganic aluminum salts. The aluminum salts can convert the highly soluble sodium sulfate in the clay bricks into sodium salts with lower solubility, making it impossible for them to migrate outwards, thereby preventing the efflorescence of clay bricks. Moreover, compared with organic protection materials, the inorganic aluminum salts have good durability and antioxidant properties, thereby endowing the anti-frost agent with good weather resistance; the water-based epoxy resin AB glue and the silane impregnating agent play a role in physical plugging, reducing the outward migration of salts and moisture, thereby preventing the efflorescence of clay bricks.

This invention provides an anti-efflorescence alkaline primer emulsion for exterior walls, its preparation method, and its application. The raw materials of this primer emulsion, by weight, include: 0.7-1.6 parts emulsifier, 15-27 parts styrene, 10-25 parts acrylate monomers, 0.5-1.8 parts unsaturated carboxylic acids, 0.3-0.8 parts acrylamide monomers, 0.2-0.6 parts silane coupling agent, 0.3-0.5 parts persulfate initiator, 0.05-0.15 parts post-treatment agent, 0.05-0.16 parts environmentally friendly bactericide, 0.5-1.6 parts pH adjuster, 0.03-0.11 parts defoamer, and 41-54 parts water. This invention introduces a silicon-containing or rigid skeleton structure to form a dense cross-linked network, blocking the penetration of salt and alkali ions. This gives the emulsion excellent resistance to salt and alkali, water resistance, and adhesion. It can effectively prevent efflorescence, discoloration, chalking, and peeling of the wall surface, and extend the service life of the topcoat. It is especially suitable for exterior wall coating in high saline and alkaline environments such as coastal areas.

The invention provides geopolymer improved granite residual soil as well as a preparation method and application thereof, and belongs to the technical field of geopolymer materials. The geopolymer improved granite residual soil comprises granite residual soil, a gel material and a carbonate alkali activator, the mixing amount of the gel material is 10-20% of the total mass of improved dry soil, the mass of equivalent Na2O generated by the carbonate alkali activator is 2.5-6.5% of the mass of the gel material, and the content of the equivalent Na2O generated by the carbonate alkali activator is 10-20% of the total mass of the granite residual soil. The gel material comprises the following components in parts by weight: 35-50 parts of glass superfine powder, 20-40 parts of petroleum refining deactivated catalyst powder and 10-35 parts of circulating fluidized bed combustion ash. The composite system reacts to generate an interpenetrating gel network and a compact pore structure, saltpetering of the material can be inhibited, long-term stabilization of heavy metal is realized, and freeze-thaw resistance, dynamic load fatigue resistance and dry-wet cycle resistance of the material are remarkably improved.