32 results about "Hydraulic lime" patented technology

The invention discloses a performance improvement mechanism and a preparation method of a modified Aga soil material, a silane coupling agent and hydraulic lime are added into traditional Aga soil (Aga soil, water, elm bark juice and clear oil), and the modified Aga soil material is formed by combining a Tibetan ramming process. The modification principle is as follows: a silane coupling agent is dissolved in water to form a silanol solution, the silanol solution permeates into Aga soil along with ramming after being sprayed, and the hydraulic lime and the Aga soil are subjected to a pozzolanic reaction to generate a gelling product mainly comprising hydrated calcium silicate, so that the bonding and overall mechanical properties among particles of the Aga soil are improved; silanol and hydroxyl groups on the surface of the gelling product are subjected to dehydration condensation to form siloxane covalent bonds and enhance the structural stability; then, the silanol molecules are subjected to cross-linking polymerization, an organosilane polymer hydrophobic membrane is formed on the surfaces of the Aga soil and the gelling product, moisture is effectively blocked, and the water resistance and the impermeability of the Aga soil material are improved. The preparation method disclosed by the invention is simple, convenient, green and environment-friendly, can obviously improve the mechanical and durability of Aga soil, and has a good engineering application prospect.

The application provides an adsorption-induced transmission type hydraulic lime suspension and a preparation method thereof, and belongs to the technical field of building materials. The application uses the knowledge of suspension particle dynamics, selects spherical micro-nano pozzolanic materials as the hydraulic component to promote the kinetic stability of the hydraulic lime suspension and the permeability of the hydraulic lime suspension in the earthen site. However, the specific surface area of the regular spherical particles is relatively small, the adsorption in the earthen site is small, and the regular spherical particles are prone to return migration to the surface of the earthen site to form whitening as the solvent evaporates. The application uses the alkali activation and hydrothermal synthesis method to load the silicon / aluminum gel and zeolite with super-large specific surface area on the surface of the pozzolanic material, plays an adsorption-induced transmission role, realizes the deep penetration of the hydraulic lime suspension in the earthen site, and avoids the return migration phenomenon.

The application discloses a kind of for sandstone class stone historical relic body protection bonding material and protection method, it is related to sandstone class relic protection technical field, its technical key points are: including binder and grouting material, by mass ratio, binder is composed of the following components: 12-18% ultrafine portland cement, 0.5-1% sodium silicate, 8-12% water, 70-76% hydraulic lime;Grouting material is composed of the following components: 97-98% epoxy resin, 2-3% metakaolin.The application improves the compressive strength, tensile strength and shear strength of sandstone historical relics by using bonding material for historical relic restoration, and further improves the weathering resistance and corrosion resistance of sandstone historical relics, which is of great significance for the protection and improvement of the safety performance of historical relics.

The invention relates to a composite panel (1) for structural and / or roofing and / or decorative purposes, comprising a core (2) sandwiched between two metal plates (3). The bond between the core (2) and each of the metal plates (3) is achieved by means of an adhesive layer forming the interface between said core (2) and each of said metal plates (3). According to the invention, the core (2) comprises at least one mixture or combination of at least one material from a first family of materials including cork and mycelium, and at least one material from a second family of materials including hydraulic lime, vermiculite, calcium silicate, calcium carbonate, and cement. Figure for the abstract: [Fig 2]

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 provides a preparation method of natural hydraulic lime, which comprises the following steps: calcining natural hydraulic lime raw material to obtain a calcined product; and mixing the calcined product with digestion water containing a digestion regulator to perform a digestion reaction, so as to obtain natural hydraulic lime, wherein the digestion regulator is selected from hydrochlorides of alkali metals, sulfates of alkali metals and hydrofluorides of alkali metals. The method is simple in process and convenient to operate, and the natural hydraulic lime obtained by using the method has high carbonation activity.

The invention relates to a crack sealer for joint filling and reinforcing of ganged bricks and a preparation method of the crack sealer. The crack sealer comprises the following components in percentage by mass: 30-35% of quartz sand with the particle size of 0.125-0.25 mm, 30-35% of quartz sand with the particle size of 0.25-0.5 mm, 20-30% of natural hydraulic lime, 5.5-6.5% of titanium dioxide, 1% of cellulose ether, 1% of lignocellulose and 2% of dispersible rubber powder. The crack sealer for joint filling and reinforcing of ganged bricks, provided by the invention, is relatively high in strength and relatively good in toughness, can be relatively well combined with original mortar joint mortar, and is similar to an original brick surface crack sealer in color texture. The two working procedures of joint filling and joint pointing can be combined into a whole, the reinforcing effect is achieved, the artistic value of the plain brick wall is not damaged, and therefore the effect of reinforcing the historical plain brick wall in a lossless mode is achieved.

The invention relates to the field of repair materials, in particular to an ancient site repair material and a process for repairing the outer wall of an ancient site through undercutting, and the ancient site repair material comprises the following components in parts by weight: 0.5-2 parts of an A05 type natural hydraulic lime material and 0.5-2 parts of concrete powder; the invention provides a repair material and a process, and relates to a repair material which is matched with a cultural relic body in mechanical property (the strength is close to but does not exceed that of the body), good in compatibility and high in reversibility and a construction process. Rainwater permeation can be effectively prevented, crack expansion is inhibited, and the service life of the cultural relic body is prolonged; and the restoration process can be operated reversely, so that subsequent maintenance is facilitated. The problem that an existing repairing material is insufficient in strength and binding power is solved, and the durability of a repairing body is improved; the principle of'reversibility 'of cultural relic protection is met, and a room is reserved for subsequent repair; the combination of traditional materials and a modern repair technology is promoted, and a standardized ancient site etching repair process is established.

The invention belongs to the technical field of earthen archaeological site building material repairing, and provides an earthen archaeological site reinforcing mortar material based on hydraulic lime and an MICP technology and a preparation method and application thereof. The earthen archaeological site reinforcing mortar material is prepared from the following raw materials: modified soil and activated ureococcus liquid, the modified soil comprises a cementing material, silt and water; the cementing material comprises natural hydraulic lime and slaked lime in a mass ratio of (2-4): 2, the mass ratio of the cementing material to the silt is (23-27): 100, and the mass ratio of the silt to the water is (22-26): 100. The earthen archaeological site reinforcing mortar material has excellent mechanical properties and good workability, and meets the normal construction requirements of earthen archaeological sites; the anti-seepage performance and the anti-expansion performance are good, and the expansion rate is smaller than 0.1%; the problems of cracking and falling off do not occur in a short time after reinforcement; and the coating can be condensed and hardened to generate strength in a dry environment and a humid environment, so that the construction requirements in different seasons are met.

The invention provides a natural hydraulic lime-based exterior wall spraying material and a preparation method thereof, and belongs to the technical field of building interior and exterior wall decoration. The formula comprises the natural hydraulic lime, the talcum powder, the white cement, the river sand, the water reducing agent, the bentonite, the water repellent, the polyvinyl alcohol, the defoaming agent and the titanium dioxide, the material can achieve high-quality exterior wall decoration through one-time construction, the construction process is greatly simplified, and the spraying material has the advantages of being environmentally friendly and capable of being widely applied to exterior wall decoration. Meanwhile, excellent crack resistance and self-healing characteristics are achieved, cracks can be effectively prevented from being generated in the face of temperature change, humidity fluctuation and external erosion, and the integrity of an outer wall structure is maintained.

The invention discloses a natural hydraulic lime prepared by industrial solid waste and a preparation method, comprising the following raw materials by mass fraction: 50% to 85% limestone, 10% to 20% slag, 5% to 20% silica fume and 5% to 20% fly ash. Industrial waste fly ash, slag and limestone are used as raw materials to prepare natural hydraulic lime in large quantities, and the raw materials are designed in proportion. The mixed powder blocks are calcined and then digested with water to obtain natural hydraulic lime; it is economical and environmentally friendly, realizes the reuse of solid waste, effectively reduces production costs, and protects the ecological environment; and after raw material pretreatment, calcination and digestion processes, natural hydraulic lime that meets the BS.EN459‑2015 standard is obtained. The present invention uses industrial solid waste to prepare natural hydraulic lime, utilizes industrial solid waste in a high-value manner, mixes it with standard sand to make mortar, and then applies it to the repair of the exterior wall of the masonry wall of a historical building, with low repair cost and in line with environmental protection requirements.

The invention discloses a preparation method and application of a hydraulic lime cementing material. The hydraulic lime cementing material comprises the following raw materials in parts by weight: 12-70 parts of calcium oxide, 15-80 parts of calcium hydroxide, 10-25 parts of calcium carbonate, 1-5 parts of mineral powder and 0.2-0.5 part of an auxiliary agent. The calcium oxide, the calcium hydroxide, the calcium carbonate and the mineral powder are superfine powder and have the specific surface area of 450-500cm < 2 > / kg. The hydraulic lime cementing material is applied to restoration and reinforcement engineering of rock soil cultural relics. The bottleneck that raw materials are limited and the quality cannot be regulated and controlled in the traditional rock soil restoration material production is broken through, the related performance requirements of rock soil cultural relic protection engineering can be met, the product performance is stable, the production cost is greatly reduced, the production technological process is simplified, and large-scale mass production is completely achieved.

The present invention relates to a novel ecological hydraulic binder composition for plant aggregate materials, such as hemp concrete. The composition of the invention incorporates a very high content of natural hydraulic lime while ensuring optimal mechanical properties. The invention proposes in particular to optimize the mechanical performance by using a mixture of calcium sulfate and calcium aluminate cement. The setting and hardening time of the materials is also significantly reduced, which makes it possible to accelerate the production of plant aggregate materials.

The utility model discloses a mold for sizing a slurry material on the surface of a bonding strength test sample, which is characterized in that a plurality of single petal molds are arranged in an annular outer mold and are connected end to end to form an annular inner mold, so that after hydraulic lime mortar is smeared in the annular inner mold for sizing, the annular outer mold can be detached firstly, and then the annular outer mold can be detached; compared with a traditional mold formed by two semicircular rings, the contact area between the single petal molds and lime mortar is much smaller, so that the attaching tightness degree is much smaller, and a shaped mortar layer is basically not disturbed when the single petal molds are separated; therefore, compared with the prior art, the device disclosed by the utility model has the advantages that the slurry layer is not easy to disturb during demolding, and meanwhile, the sample preparation efficiency can be improved.

The invention belongs to the technical field of building materials and stone cultural relic protection, and discloses a composite material for repairing stone cultural relics in a cold environment and a preparation method thereof.The preparation method includes the steps that S1, natural hydraulic lime, metakaolin and deionized water are weighed according to the proportion and stirred to be uniform, and slurry a is obtained; s2, a modified material is added into the slurry a and stirred uniformly, slurry b is obtained, and the modified material is any one or more of carbon nanotubes, nano-silica and glutinous rice slurry; s3, the slurry b is subjected to injection molding, demolding is conducted after room-temperature curing, then the slurry b is placed in an environment with the fixed temperature and humidity to be cured, and the hydraulic lime-based composite material is obtained. The hydraulic lime-based composite material provided by the invention has low shrinkage, relatively high early strength and excellent freeze-thaw resistance, and is suitable for repairing and reinforcing stone cultural relics in a cold environment.

The invention belongs to the technical field of lime mortar, and provides silicon-titanium aerogel, silicon-titanium aerogel modified silane emulsion, a preparation method of the silicon-titanium aerogel modified silane emulsion and super-hydrophobic self-cleaning hydraulic lime mortar. The preparation method of the silicon-titanium aerogel comprises the following steps: mixing silicon dioxide sol and titanium dioxide sol to obtain silicon-titanium co-sol, and sequentially standing and aging the silicon-titanium co-sol to obtain gel; and carrying out supercritical carbon dioxide drying on the gel to obtain the dried silicon-titanium aerogel. The physical and chemical properties of the surface of the lime mortar are changed through silicon dioxide and surface chemical modification (such as silane and the like), so that the lime mortar has super-hydrophobic and self-cleaning characteristics; the traditional advantages of lime mortar, such as air permeability and environmental friendliness, are maintained, and meanwhile, the water resistance and the pollution resistance of the mortar are also greatly improved.

This invention provides a fluorinated polyether-modified nano-silica sol and a composite silicate inorganic coating for hydraulic lime-based walls, and their preparation method, belonging to the technical field of inorganic silicate coatings. The preparation method of the fluorinated polyether-modified nano-silica sol includes: condensing a polyether modifier with nano-silica sol in the presence of ammonia; the polyether modifier is a fluorinated polyether silane modifier or a polyether alcohol modifier. This invention also provides a fluorinated polyether-modified nano-silica sol composite silicate inorganic coating, comprising a S1 component and an S2 component in a mass ratio of 1:0.2~1.0, wherein the S1 component comprises an inorganic silicate solution, the fluorinated polyether-modified nano-silica sol, a polymer emulsion, a defoamer, a dispersant, a stabilizer, and water; the S2 component comprises dolomite powder, calcined kaolin, titanium dioxide, and a dispersant. The coating of this invention can improve the fluidity and leveling properties of the coating, making the construction process smoother and the coating quality higher.

The invention relates to the technical field of soil remediation materials, in particular to an improved tabia composition and a remediation material preparation method and application, the tabia composition comprises A05 natural hydraulic lime, tabia powder, boiled tung oil and water, and the mass ratio of the A05 natural hydraulic lime to the tabia powder to the boiled tung oil to the water is (1-3): 1: (1-4): (20-30); according to the tabia composition provided by the invention, reference is provided for selection of an ancient site outer wall erosion repair material through a repair material proportioning scheme based on an A05 natural hydraulic lime material and comparison and analysis; a performance testing method and an evaluation standard of the repair material are systematically established, and the applicability and the long-term effect of the repair material are comprehensively and accurately evaluated; the influence of different proportioning schemes and manufacturing methods on the performance of the repair material is verified through test data, and a scientific basis is provided for optimizing the preparation and manufacturing process of the repair material.

The present invention belongs to the technical field of building material protection, and discloses a hydraulic lime-based mortar with a plant growth inhibition function, a preparation method thereof, and an application thereof. The hydraulic lime-based mortar of the present invention comprises the following components in parts by mass: 60 to 90 parts of hydraulic lime, 1 to 3 parts of modified bentonite, 20 to 40 parts of slaked lime, 200 to 250 parts of calcium fine aggregate, 0.01 to 0.02 parts of air entraining agent, 0.1 to 0.2 parts of thickener, 0.1 to 0.2 parts of water reducer, and 45 to 60 parts of water. The hydraulic lime-based mortar obtained by the present invention can effectively inhibit plant growth, retain the self-healing and air permeability of the lime material, and has good strength, weather resistance, and anti-aging properties. It is particularly suitable for building structures and exterior walls that need to be protected from plant invasion for a long time.

The application provides a stone cultural relic crack grouting method based on a high-pH-resistant microbial mineralization process. The method comprises small-scale crack and large-scale crack grouting repair; the small-scale crack is treated by grouting with a microbial slurry, and the microbial slurry is prepared from urea, a high-pH-resistant microbial liquid and hydraulic lime; the large-scale crack is sealed and protected by hot melt adhesive and paper adhesive tape before grouting, grouted by microbial mortar prepared from stone powder, hydraulic lime, urea and the high-pH-resistant microbial liquid, and subjected to surface shaping treatment after the grouting and curing are completed; and the high-pH-resistant microbial liquid is obtained by domesticating non-toxic and harmless microorganisms. The application provides a technology and method suitable for cracks of stone cultural relics of multiple scales, can improve the early strength of the hydraulic lime, has the advantages of good salt resistance, green environmental protection, simple operation, low cost, wide application range and the like.

The invention belongs to the technical field of resource utilization of inorganic non-metallic materials and solid wastes, and discloses natural hydraulic lime based on construction wastes and a preparation method of the natural hydraulic lime. The natural hydraulic lime comprises the following raw materials in percentage by mass: 5-35% of waste concrete powder, 60-90% of carbide slag powder and 1-5% of red mud powder. According to the present invention, three bulk solid wastes are adopted as main raw materials, such that the effects of waste treatment with waste and synergistic utilization are achieved, the prepared product is the high value-added natural hydraulic lime, and can replace the traditional NHL, and the ratio of the three waste residues is accurately adjusted so as to stably produce the series products with different strength grades of NHL2, NHL3.5 and NHL5 so as to meet different market requirements.

The present invention belongs to the technical field of earthen ruins building material repair, and provides an earthen ruins reinforcement mortar material based on hydraulic lime and MICP technology, as well as its preparation method and application. The raw materials of the earthen ruins reinforcement mortar material of the present invention include modified soil and activated urea micrococcus bacterial solution; the modified soil includes a cementitious material, silt and water; the cementitious material includes natural hydraulic lime and slaked lime in a mass ratio of 2 to 4:2, the mass ratio of the cementitious material to silt is 23 to 27:100, and the mass ratio of silt to water is 22 to 26:100. The earthen ruins reinforcement mortar material of the present invention has excellent mechanical properties and good workability, meeting the normal construction requirements of earthen ruins; good anti-seepage and anti-expansion properties, with an expansion rate of <0.1%; no cracks or falling off problems occur within a short period of time after reinforcement; it can solidify and harden to produce strength in both dry and humid environments, meeting the construction needs of different seasons.

The invention provides a preparation method of high-performance natural polymer modified mortar based on a wood orange extract additive, and belongs to the technical field of modified mortar. The preparation method of the high-performance natural polymer modified mortar based on the citrus reticulata extract admixture comprises the following steps: firstly, mixing the citrus reticulata extract and the natural hydraulic lime to obtain lime paste, and then mixing the lime paste with the siliceous fine aggregate to obtain a mixture in a plastic state; and finally, grinding and standing to obtain the high-performance natural polymer modified mortar of the wood orange extract additive. The prepared modified mortar can significantly improve the compressive strength, bending strength and impermeability of the mortar, has the advantages of high compressive strength, high bending strength and clear and traceable raw material carbon footprint, and has the characteristics of renewable raw materials, low energy consumption production, high performance and long service life.

The invention belongs to the technical field of building materials, and provides natural hydraulic lime-based mortar as well as a preparation method and application thereof. The natural hydraulic lime-based mortar comprises a base material, an admixture, an additive and water, the base material comprises the following components in percentage by mass: 60-75% of natural hydraulic lime, 15-35% of quartz sand and 5-15% of limestone powder. The natural hydraulic lime is adopted as a main component to prepare the mortar, the mortar has high compatibility with a base material of an ancient building, and the problems that a traditional cement-based material is poor in compatibility with a main building, slow in strength exertion and large in drying shrinkage are solved. The mortar is prepared by matching the natural hydraulic lime with the quartz sand, the limestone powder, the proper admixture and the admixture, has excellent strength and other properties, and is completely suitable for repairing ancient buildings by adopting a 3D printing technology.

This invention relates to a nano-metakaolin-modified hydraulic lime-based composite material and its preparation and application. The composite material comprises natural hydraulic lime and nano-metakaolin dispersed in the natural hydraulic lime, wherein the mass ratio of natural hydraulic lime to nano-metakaolin is (60-90):(10-40). The nano-metakaolin-modified hydraulic lime-based composite material of this invention exhibits controllable dispersibility and fluidity in the slurry after mixing with water. It also demonstrates good rock compatibility, low soluble salt content, controllable curing time, suitable post-curing strength, low permeability, and low shrinkage and expansion rate. The presence of a repair agent can specifically enhance the additional protective performance of the reinforcement material. It possesses high applicability, safety, and durability for the protection of stone cultural relics, without causing derivative damage.

This invention belongs to the field of lime mortar technology and provides a silicon-titanium aerogel, a silicon-titanium aerogel-modified silane emulsion, its preparation method, and a superhydrophobic self-cleaning hydraulic lime mortar. The preparation method of the silicon-titanium aerogel of this invention includes the following steps: mixing silica sol and titanium dioxide sol to obtain a silicon-titanium cosol; sequentially allowing the silicon-titanium cosol to stand and age to obtain a gel; and subjecting the gel to supercritical carbon dioxide drying to obtain a dried silicon-titanium aerogel. This invention alters the physicochemical properties of the lime mortar surface through silica and surface chemical modification (such as silanes), thereby giving it superhydrophobic and self-cleaning properties; it maintains the traditional advantages of lime mortar, such as air permeability and environmental friendliness, while also significantly improving the mortar's waterproofness and stain resistance.

The invention belongs to the technical field of building material protection, and discloses hydraulic lime-based mortar with a plant growth inhibition function as well as a preparation method and application of the hydraulic lime-based mortar. The hydraulic lime-based mortar disclosed by the invention is prepared from the following components in parts by mass: 60 to 90 parts of hydraulic lime, 1 to 3 parts of modified bentonite, 20 to 40 parts of slaked lime, 200 to 250 parts of calcium fine aggregate, 0.01 to 0.02 part of air entraining agent, 0.1 to 0.2 part of thickening agent, 0.1 to 0.2 part of water reducing agent and 45 to 60 parts of water. The hydraulic lime-based mortar obtained by the invention can effectively inhibit plant growth, also retains the self-healing property and air permeability of a lime material, has good strength, weather resistance and aging resistance, and is especially suitable for building structures and outer walls needing to be prevented from being damaged by plants for a long time.

The invention belongs to the technical field of building materials and cultural relic protection, and particularly relates to a zeolite modified hydraulic lime-based material and application thereof. The zeolite modified hydraulic lime-based material provided by the invention comprises the following components: synthetic zeolite and natural hydraulic lime, wherein the synthetic zeolite accounts for 8-30wt% of the total mass of the synthetic zeolite and the natural hydraulic lime. The zeolite modified hydraulic lime-based material provided by the invention comprises natural hydraulic lime and zeolite dispersed in the hydraulic lime, and slurry obtained by compounding the material and water has the characteristics of controllable fluidity, controllable curing time, light weight, low soluble salt content, high early strength and the like. In addition, the introduction of the protective agent and / or the functional additive can further improve the performance of the material in a targeted manner. The zeolite modified hydraulic lime-based material provided by the invention has relatively high applicability, safety and weather resistance for reinforcing and protecting rock soil cultural relics which are subjected to weathering damage.

The invention discloses natural hydraulic lime-based masonry mortar and a preparation method thereof, and belongs to the technical field of building materials. The natural hydraulic lime-based masonry mortar is prepared from the following raw materials: a cementing material, aggregate and an additive, wherein the cementing material is composed of natural hydraulic lime and metakaolin, and the mass content of the metakaolin in the cementing material is 3-5%; the additive is prepared from cellulose ether, a silane coupling agent and a water reducing agent. The masonry mortar contains natural hydraulic lime, and also contains various inorganic (metakaolin and quartz sand) and organic (cellulose ether, silane coupling agent and water reducing agent) functional materials, and by designing the types and proportions of the functional components and combining physical and chemical effects, the masonry mortar can be used for building a building block, and the building block can be used for building a building block. The microporous structure and the interface bonding capacity of the natural hydraulic lime masonry mortar are optimized, so that the natural hydraulic lime masonry mortar has excellent water resistance and high cohesiveness.

A cementitious composition referred to herein as Recreated Roman Cement / Concrete (RCCe / RCCo) and method of making thereof, are disclosed. The RCCe is made from a binder composition. The binder composition (herein Recreated Roman Cement) is formulated with: (i) calcined clay, (ii) hydraulic lime, and optionally, (iii) ground granulated blast furnace slag (GGBFS). Also provided Recreated Roman Concrete (RCCo) or mortar, which is produced by mixing Recreated Roman Cement with either seawater or sodium sulfate solution or a mixtures of sodium sulfate and solidum chloride to produce paste compositions. The paste can be further mixed with sand or coarse aggregate to produce mortar or concrete, respectively. This developed cementitious system is referred to herein as Recreated Roman Cement / Concrete (RRCe / RCCo). The disclosed composition can be used to make various construction end products, especially construction products applicable to coastal areas.