42 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 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 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.

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 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 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.

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.

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.

The application discloses an organic-inorganic acid-activated geopolymer and a preparation method thereof, and belongs to the technical field of solid waste resource utilization. The raw materials of the organic-inorganic acid-activated geopolymer according to the application comprise, in parts by mass, 30-40 parts of a mixed activator, 30-50 parts of fly ash, 10-30 parts of metakaolin and 20-60 parts of a second solid waste; the mixed activator comprises inorganic acid and organic acid. The application overcomes the characteristics that a large amount of strong alkali or strong acid needs to be added when alkali activation and traditional inorganic acid activation of geopolymer are performed, and the safety hazards during on-site construction are relieved. The solid waste is treated by using low-risk organic acid to prepare geopolymer gel, which can not only prevent seepage and cracking, form a product with a more compact surface, but also avoid the weathering and efflorescence problems caused by the existence of Na and K in alkali activation, and has good application potential.

The utility model relates to the technical field of scenery wall construction alkali efflorescence prevention, disclose a scenery wall construction alkali efflorescence prevention detail processing structure, including base, the base sets up in the ground, the top of base is fixedly connected with scenery wall body, the top of scenery wall body is provided with coping stone, both sides of scenery wall body all are provided with waterproof coating, the outside bonding of waterproof coating has waterproof board, the anti -unscrewing subassembly includes two groups of vertical rods of symmetry swing joint in both sides of scenery wall body, both sides of waterproof board all are fixedly connected with fixed block, and the fixed block is hinged with connecting rod through hingepiece between with same side vertical rod, the utility model effectively avoided because scenery wall between the easy existence of clearance with coping stone when construction, and mortar combined layer is not full unsealed edge guide, make when rainwater immerges in the mortar after easy to take out oxidized calcium ion from the clearance and form white alkali efflorescence material problem.

The present application relates to the field of geological mining. Disclosed is an effective identification method for a water-preserving coal mining area in a weathered bedrock aquifer. The method comprises: classifying the types of stratum structures; when a target stratum area belongs to a first type, and the invasion degree of burnt rock in an aquitard is greater than or equal to a first set threshold value, making a determination on the basis of an initial hydraulic gradient of the aquitard, the hydraulic head height of an unconsolidated sand aquifer and the effective thickness of the aquitard; when the target stratum area belongs to a second type, and the invasion degree of burnt rock in a weathered bedrock aquifer is greater than or equal to a second set threshold value, making a determination on the basis of the water retention capacity and water abundance of the burnt rock in the weathered bedrock aquifer; when the target stratum area belongs to a third type, making a determination on the basis of the invasion degree of the burnt rock in the weathered bedrock aquifer and surface water bodies; and when the target stratum area belongs to a fourth type, directly making a determination. The present application realizes the effective identification of a water-preserving coal mining area in a weathered bedrock aquifer.

The invention provides a mildew-proof and moisture-proof thick-coating type coating capable of being used in a humid environment and a construction method of the mildew-proof and moisture-proof thick-coating type coating. Comprising the following raw materials: 5-10 parts of ash calcium, 5-15 parts of mineral powder, 10-15 parts of metakaolin, 10-15 parts of 80-120-mesh quartz sand combined powder, 5-10 parts of ground calcium carbonate combined powder, 10-15 parts of 200-mesh quartz sand, 5-15 parts of 300-mesh modified zeolite powder, 5-10 parts of white cement, 0.1-0.2 part of a water reducing agent, 1-3 parts of latex powder, 0.5-1 part of cellulose with 100,000 viscosity, 0.5-1 part of an alkali inhibitor and 0.2-0.5 part of a pH regulator. The 80-120-mesh quartz sand combined powder comprises 80-120-mesh quartz sand and 80-120-mesh modified quartz sand, and the heavy calcium carbonate combined powder comprises heavy calcium carbonate powder and modified heavy calcium carbonate powder. The coating can well inhibit the alkali efflorescence phenomenon of the wall, simplify the construction process and improve the construction efficiency.

This invention discloses a cement-based protective dry powder coating based on high-permeability crystallization and honeycomb microporous breathing structure and its preparation method. This invention solves the industry problems of water seepage, efflorescence, and mold growth on walls in humid environments, simplifies the construction process, improves the long-term effectiveness and applicability of protective materials, and lowers the barriers to transportation and construction of traditional protective coatings.

The invention relates to the technical field of nonmetallic mineral processing, and discloses a physical purification method for weathered potassium feldspar quartz separation, which comprises the following steps: a, ore washing and desliming: carrying out ore washing on weathered potassium feldspar quartz raw ore, and separating out deslimed sand and tail mud; b, screening and color sorting: screening the deslimed sand into a coarse fraction and a fine fraction, carrying out color sorting on the coarse fraction, and separating out feldspar concentrate, quartz concentrate and mixed middling; and c, middling and fine fraction retreatment, wherein the mixed middling and the fine fraction are combined and then subjected to ore grinding. According to the whole technological process provided by the invention, no acid-base or flotation reagent is used, generation of toxic wastewater and waste gas is fundamentally eliminated, no pollution is caused to the environment, the development direction of green mines and clean production is met, high chemical reagent cost and complex wastewater treatment facilities and operation cost are omitted, and the method is suitable for industrial production. The process flow is simple, and the equipment investment and the operation cost are greatly reduced.

This invention provides a steel pipe soil nail anchor bolt for rapid penetration of weathered mudstone strata and its construction method. The anchor bolt includes: an anchor bolt body; a drill bit disposed at the drilling end of the anchor bolt body for breaking the weathered mudstone strata; an external drilling rig whose power output end is connected to the anchor bolt body for driving the anchor bolt body to rotate, thereby driving the drill bit to rotate and achieve drilling operations, forming an anchor bolt hole; and a casing fitted around the outer periphery of the anchor bolt body for supporting the hole wall during drilling. This invention utilizes the drill bit disposed at the drilling end of the anchor bolt body to rapidly break up weathered mudstone, quickly penetrating the weathered mudstone strata, saving construction time and ensuring the overall progress of the project; the casing disposed around the outer periphery of the anchor bolt body prevents hole collapse during drilling, ensuring the quality of the anchor bolt hole, and solving the problems of low drilling efficiency and easy hole collapse of existing anchor bolt drilling rigs in weathered mudstone strata.

The invention relates to the field of building coatings, and discloses an interior and exterior wall calcium crystal porcelain pure inorganic coating and a preparation method thereof. The formula of the coating comprises the following components by weight: nano calcium hydroxide, active magnesium oxide, a magnesium source compound, magnesium nitrate, modified magnesium-aluminum layered double hydroxide, nano titanium dioxide, nano silicon dioxide, monocalcium phosphate, nano calcium carbonate, ammonium bicarbonate, citric acid and deionized water. The innovation of the method is that an endogenous carbonization and dynamic pH buffer synergistic system is constructed: ammonium bicarbonate provides endogenous carbonate and accelerates the generation of calcium-magnesium multiphase crystals; the layered double hydroxide regulates the pH value of a system through ion exchange, so that the pH value of the coating is rapidly stabilized in a weak base range. The interior and exterior wall calcium crystal porcelain pure inorganic coating is a single component, and has the comprehensive performance of zero VOC, A1-level fire prevention, alkalescence, salt mist resistance, high hardness, antibacterial property and mildew resistance. The invention solves the technical problems of high alkali, alkali efflorescence, slow curing and poor water resistance of the traditional inorganic coating.

The invention discloses a grooving construction method for a seepage interception wall of a total rock stratum tailing reservoir, the method is suitable for a fully weathered to slightly weathered rock stratum and a quartz vein development stratum, and the method comprises the following steps: S1, guide wall construction: constructing a reinforced concrete guide wall at the axis position of the seepage interception wall; s2, interlocking type main hole drilling is conducted, specifically, a large-aperture down-the-hole drill is adopted, and partition-wall-free interlocking type main hole drilling operation is conducted in the guide wall; the interlocking type main hole drilling means that no rock-soil partition wall is reserved between every two adjacent main holes; s3, circular pile casing supporting is conducted, specifically, in the drilling process of the down-the-hole drill in the step S2, a plurality of long pile casings are adopted to be matched with drilling operation; a hydraulic square drill bit is arranged, crescent rock mass left on the two sides of the groove wall is cut and trimmed, and the flat groove wall is formed; s5, staged tank cleaning: the tank cleaning operation is divided into a rough cleaning stage and a fine cleaning stage; and S6, wall body concrete pouring is conducted, specifically, wall body concrete pouring is conducted through an under-bare-water pouring technology, and vibration compensation is conducted in the wall top area.

The utility model relates to the technical field of saltpetering spray experimental devices, in particular to a concrete saltpetering spray experimental device which comprises an experimental box, a plurality of experimental material placing mechanisms are movably connected in the experimental box, concrete is placed through the experimental material placing mechanisms, a plurality of connecting mechanisms are arranged in the experimental box, and the connecting mechanisms are connected with the experimental box. The connecting mechanism is connected with the water guide pipe, the other end of the connecting mechanism is connected with the experiment material placing mechanism, and the water guide pipe is fixedly mounted on the outer side of the experiment box; concrete is placed by arranging a plurality of experiment material placing mechanisms which can be movably installed, meanwhile, by arranging a plurality of connecting mechanisms, after a connecting plate is installed, a water source can enter the experiment material placing mechanisms through the connecting mechanisms, and the connecting mechanisms at the positions where the experiment material placing mechanisms are not installed are used; and the number of the experiment material placing mechanisms can be increased or decreased at will according to the experiment condition.

The invention discloses a modified porous aggregate, a preparation process and concrete, and belongs to the technical field of concrete aggregates, and the modified porous aggregate comprises the following components in parts by mass: 0.4-0.8 part of glass slag, 2.0-2.8 parts of modified zeolite, 3.0-3.8 parts of gravel, 0.8-1.2 parts of fly ash and 2.0-2.2 parts of lime. According to the invention, concrete raw material aggregate is designed, crushed glass and modified zeolite are added, gravel, fly ash and lime in a hot melting state are mixed in a sintering machine, and gaps are created for a mixture adhered to the surface of the modified zeolite by utilizing the characteristics of the crushed glass; the modified zeolite in the aggregate containing the modified zeolite is ensured to be in contact with external concrete, and water and alkaline substances are absorbed by the modified zeolite when the concrete is in a damp state, so that the conditions of surface saltpetering and salting-out of the concrete in a humid environment are avoided.

The invention discloses a method for starting water interception and water control of a large-diameter earth pressure balance shield in an ultra-deep water-rich soft rock stratum, and belongs to the technical field of shield construction. The tunnel portal adopts a multi-stage composite sealing system; the deep cracks are subjected to precise grouting reinforcement, and the precise grouting reinforcement comprises the reinforcement range, the hole arrangement mode, the grouting process, the grouting pipe construction, slurry, quality inspection and the hole sealing process; shield launching dynamic regulation and control; and whole-course monitoring and early warning. By means of the method, efficient and safe construction can be conducted on water conservancy tunnel engineering such as a shield with the diameter larger than or equal to 12 m, the burial depth larger than or equal to 60 m and medium weathered soft rock strata with bed rock fissure water development. And the water stopping effect during safe starting of the large-diameter shield in the ultra-deep, water-rich and soft rock stratum is improved.

The invention discloses a preparation method of a coal gangue and fly ash-based geopolymer additive based on microorganism modified coal mine drainage sludge, which comprises the following steps: firstly, drying and grinding the coal mine drainage sludge to obtain pretreated CMDS fine powder, biologically modifying the sludge by using iron reducing bacteria (such as Shewanella oneidensis MR-1) under a neutral anaerobic condition, and preparing the coal gangue and fly ash-based geopolymer additive based on microorganism modified coal mine drainage sludge. Fe (III) in the sludge is promoted to be reduced into Fe (II), and active mineral components are generated; and separating and drying the modified sludge solid to prepare the geopolymer additive. The additive is doped into a coal gangue-fly ash-based geopolymer, so that the mechanical strength of the material can be remarkably improved, and the 28-day compressive strength is improved by about 10-35% compared with that of an unmodified sludge group; meanwhile, the saltpetering condition is effectively reduced, heavy metal is stably solidified, the environment-friendly performance is excellent, high-value utilization of mine waste is achieved, the preparation process is green, simple and convenient, and the method can be used for developing high-performance and environment-friendly geopolymer additives.

The present application relates to the technical field of building materials, in particular to a no efflorescence metallurgical slag composite micro-powder cementitious material, a preparation method and application thereof.A preparation method of a no efflorescence metallurgical slag composite micro-powder cementitious material, the steel slag micro-powder is reacted with acid for the first time, then the slag is added for the second reaction, and then the water glass solution is added to obtain the no efflorescence metallurgical slag composite micro-powder cementitious material.The preparation method of the no efflorescence metallurgical slag composite micro-powder cementitious material in the present application improves the easy efflorescence of the steel slag, which is beneficial to the subsequent steel slag resource recycling.The preparation method of the no efflorescence metallurgical slag composite micro-powder cementitious material in the present application uses strong alkali as an activator, promotes the release of the internal cementitious activity of the steel slag, and widens the subsequent steel slag utilization field.

The invention belongs to the technical field of solid waste treatment, and particularly relates to a saltpetering-preventing red mud-graphite tailing road base material and a preparation method thereof. The red mud-graphite tailing road base material is prepared from the following components in parts by weight: 30 to 45 parts of red mud, 55 to 70 parts of graphite tailings, 2 to 3 parts of P.O 42.5 Portland cement, 3 to 6 parts of slag powder, 8 to 10 parts of phosphogypsum, 0.1 to 0.3 part of polycarboxylate superplasticizer, 0.01 to 0.03 part of modified MIL-101 (Fe)-NH2 and 12 to 15 parts of water. The particle size of the graphite tailings ranges from 7.5 mm to 11.2 mm, and the particle size of the red mud is smaller than or equal to 5 mm. The road base material not only solves the problem of heavy metal pollution existing in a red mud-graphite tailing-based material, but also effectively solves the problem that the red mud-graphite tailing-based material is extremely easy to cause saltpetering of a road base.

The invention belongs to the technical field of coatings, and particularly relates to an anti-efflorescence and waterproof coating as well as a preparation method and application thereof. The saltpetering-resistant and waterproof coating comprises a powder material and a liquid material, the liquid material comprises an acrylic emulsion, an auxiliary agent and water; the powder material comprises cement, graded sand, an active additive, a water reducing agent and cellulose; the glass transition temperature of the acrylic emulsion is 0-15 DEG C; the active additive comprises sodium silicate and silica fume. The cement in the powder is modified by adopting the acrylic emulsion with a specific glass transition temperature, so that the coating not only has the water resistance and durability of a cement-based material, but also has the flexibility of a high polymer material; meanwhile, sodium silicate and silica fume are compounded to serve as an active additive, and other components are combined for combined action, so that the coating has good water resistance, salting-out resistance and alkali resistance, has durability in the aspects of freezing resistance and chloride ion resistance, and can achieve good salting-out resistance and waterproof effects.

A kind of equipment and removal method for removing efflorescence of water ceramic cultural relics, the body of water ceramic cultural relics includes self-fixed efflorescence and condensate attached to the body, the removal equipment includes condensate removal system, condensate removal system includes operating box and constant temperature blower, operating box is the hollow cavity of top opening to accommodate water ceramic cultural relics, the hollow cavity of operating box is used to maintain or strengthen the connection strength of efflorescence and the body of water ceramic cultural relics when removing condensate, constant temperature blower is used to dry condensate after salt solution is soaked to peel off condensate, wherein the salt solution is gradient brine with salt concentration not higher than water cultural relics;Or the salt solution is deionized water, efflorescence removal equipment of water ceramic cultural relics biological condensate further includes cultural relic surface pre-reinforcement system for fixing efflorescence by solid material.