53 results about "Hydraulic lime" patented technology

The invention relates to an infusion and binding material composition containing the following components in proportion by weight: 20%-60% of natural hydraulic lime, 35%-78% of aggregates, 0-2% of polymer latex powder, 0.01%-2% of water reducers and 0.01%-2% of water-retention thickeners. 20%-50% of water is added in per 100 kg of materials mixed by the formula for uniformly stirring, and then the material composition can be used. The invention can satisfy the special requirements for infusing, binding and reinforcing brick and stone materials in historical buildings, positions infused and bound by adopting the infusion and binding material composition have similar performance to bricks and stones in the constructed positions, and the infusion and binding material composition has the advantages of environmental protection, safe solidified material, excellent binding force, good weather resistance and self-cure performance.

The invention relates to a method for preparing natural hydraulic lime by using limestone and quartz powder, and belongs to a building material. The method is implemented by taking limestone as a main raw material through the steps of adding high-purity quartz powder to adjust the ratio of calcium oxide and silicon oxide, controlling the content of alumina, carrying out mixed material co-grinding for 6-10 hours by using a ball mill, adding water with a mass accounting for 8% of the mass of a mixed raw material, fully stirring, putting the obtained object into a sealing bag to place for 6-7 hours, pressing the obtained object into a cylinder, drying the cylinder by using a drying oven, putting the cylinder into a muffle furnace to calcinate for 3 hours at a temperature of 1100-1200 DEG C, cooling the calcinated material to room temperature in the air by air cooling, determining the free calcium oxide content of the calcinated product, adding a certain amount of water for slaking into the calcinated product, and after the slaking process is completed, obtaining desirable natural hydraulic lime.

The invention relates to a material for reinforcing and repairing stone ruins, and in particular to hydraulic oyster ash for repairing and protecting stone ruins. The hydraulic oyster ash for repairing and protecting stone ruins is obtained by roasting clam shells in a roasting furnace at 1000-1100 DEG C, discharging, then naturally cooling to an environmental temperature, and then crushing to 150 meshes. The hydraulic oyster ash for repairing and protecting stone ruins disclosed by the invention is mainly used for a cementing material for repairing brick stone ruins; the cementing material is obtained by uniformly mixing 150-mesh hydraulic oyster ash for repairing and protecting stone ruins with 100-mesh quartz sand in a mass ratio of 1:1; during use, a slurry material is prepared by uniformly proportioning and stirring the cementing material with water in a mass ratio of 100:50. The chemical composition, mineral constituents and physical mechanical properties of the hydraulic oyster ash for repairing and protecting stone ruins disclosed by the invention are basically similar to those of hydraulic lime NHL-2 for repairing stone ruins, which is introduced in the field of historical relics of China from Germany in recent years, can be used for solving the problems of strength, durability and weather resistance of the reinforced brick stone ruins, and a novel material which is firmly combined with brick stone is provided for repairing damaged brick stone relics.

The invention discloses a method for preparing natural hydraulic lime with lead and zinc mine tailings. The method comprises the steps of taking the lead and zinc mine tailings as a major raw material, adding boron oxide, wherein the boron oxide and impurities, such as sodium oxide and potassium oxide, in the lead and zinc mine tailings form a glass phase with low hydration activity and a low hydration heat value, improving later strength, adjusting a ratio of calcium oxide to silicon oxide by adding high-purity limestone, controlling an aluminum oxide content, mixing and grinding ingredients for 6-10h with a ball mill, adding a temporary binding agent to press into a ball or a cylinder, drying, putting in a furnace for roasting for 3h at 1000-1050 DEG C, blowing and quenching the roasted material in air to the room temperature, measuring a free calcium oxide content in a roasted product, putting the roasted product in an environment with the humidity of 50-80% for digestion, recording weights of the product before and after the digestion, calculating digestibility of free calcium oxide according to a measured weight gain of the product after the digestion, finishing the digestion procedure when the digestibility of free calcium oxide reaches 98%, and obtaining the satisfactory hydraulic lime.

The invention discloses a modified hydraulic lime based material and a preparation method thereof and belongs to the technical field of building materials. The modified hydraulic lime based material comprises components of raw materials in percentage by weight as follows: 40%-80% of hydraulic lime, 5%-50% of ground mineral powder (S95level), 1%-5% of calcium nitrite, 1%-3% of lithium carbonate, 0.5%-2% of sodium gluconate, 0.5%-2% of a viscous resisting agent, 0.5%-2% of an adhesion resisting agent, 1%-3% of a thixotropy resisting agent, 1%-3% of an anti-crack resisting agent and 0.5%-1.5% of a water reducer, wherein the water reducer is an ShiJiXingYuan XY-4 type Qingdao naphthalene water reducer. The preparation method comprises steps as follows: the components are uniformly mixed in proportion and put in a grinding machine to be ground, and a mixture is obtained. The raw materials are easy to obtain, a preparation process is simple, and the modified hydraulic lime based material is simple to cure; compared with ordinary hydraulic lime, the hydraulic lime has higher crush resistance, fracture resistance and adhesion strength, has good water resistance, acid resistance, alkali resistance and ultraviolet resistance and can be well used for repairing work of antiques.

According to the invention there is provided A hydraulic lime composition including between 1 and 20% by weight of a Pozzolanic material which has a surface area of between 2 and 1000 m2g-1 when measured by BET N2 porosimetry, and an average particle size in the range 0.1 to 1000 [mu]m.

The invention relates to a preparation method for a high-strength water-resistant rock-soil repairing material used for ancient buildings, belonging to the technical field of repairing materials for buildings. According to the invention, the high-strength water-resistant rock-soil repairing material used for ancient buildings is prepared by using carboxymethyl styrene-butadiene latex and acrylic resin modified natural hydraulic lime as raw materials, zeolite as aggregate, glass fibers as a reinforcing agent, carboxymethyl cellulose as a thickener and maleic anhydride grafted starch as a compatibilizer; the addition of maleic anhydride grafted starch improves the structural compactness of the material to improve the water resistance, frost resistance and impermeability of the material and enhances the compatibility between the material and a matrix; carboxylic butadiene-styrene latex is an environmentally-friendly product with high adhesion and conjunctival strength, good mechanical andchemical stability, good fluidity, good storage stability, large filling capacity and the like; and acrylic resin has the characteristics of good gloss and color retention performance, water and chemical resistance, fast drying and so on, so the modified natural hydraulic lime has good strength and water resistance.

The invention discloses lime-based micro-contraction grouting material composition and relates to the technical field of materials for brick and stone historical relic protection. The composition is prepared from components in percentage by weight as follows: 30%-60% of aggregate, 30%-60% of natural hydraulic lime, 3%-9% of an expanding agent, 3%-8% of active micropowder and 0.8%-1.6% of an auxiliary. The micro-contraction grouting material has good compatibility with traditional brick and stone materials in physical and chemical property as well as relatively high strength, besides, micro volume expansion can be produced after the grouting material is poured into gaps due to reasonable introduction of the expanding agent, so that the grouting material can be closely combined with bricks and stone serving as a base material, and more compact grouting is realized.

The invention discloses lime-metakaolin modified soil and application thereof, and relates to the technical field of soil architecture site restoration. The lime-metakaolin modified soil provided by the invention is prepared from the following components in percentage by mass: 8-12% of quicklime powder, 4-12% of metakaolin, and the balance of a soil material. The lime-metakaolin modified soil provided by the invention is a natural inorganic material, the good compatibility of traditional lime mortar is retained, the hydraulicity of hydraulic lime is achieved, after curing for 28 days, a compressive strength value of the lime-metakaolin modified soil can meet the compressive strength class requirements for natural hydraulic lime NHL5, the color change is not obvious, the cost is low, the economical efficiency and environmental protection are achieved, and the significant advantages are achieved in application of restoration and reinforcement of soil architecture sites.

The invention discloses slag adjusting hydraulic lime mortar for reinforcing and repairing earth construction, and a preparation method thereof, and belongs to the field of building materials, whereinthe raw materials comprise: 15-25 parts of slaked lime, 10-20 parts of slag, 45-65 parts of aggregate, 0.4-1.2 parts of polymer latex powder, 0.03-0.15 part of cellulose ether, and 0.05-0.2 part of the fiber. The preparation method comprises: adding vinyl redispersible latex powder, hydroxyethyl methyl cellulose ether and fiber to a high speed mixer, uniformly stirring, adjusting the rotation speed, adding slaked lime, slag and aggregate, and uniformly mixing to obtain the product. Compared with the cement-based mortar, the obtained slag adjusting hydraulic lime mortar of the present invention can significantly reduce the high energy consumption produced by the utilization of cement, and has excellent compatibility with earth construction matrixes. Compared with the natural hydraulic lime-based mortar, the obtained slag adjusting hydraulic lime mortar of the present invention has the significantly reduced cost, can promote the resource utilization of solid waste, has significant economic benefits and environmental value, and is suitable for large-scale promotion application.

The invention belongs to the field of preparation of natural hydraulic lime, and discloses a method for preparing natural hydraulic lime from potassium feldspar and limestone. The method comprises the following steps of: step S1, uniformly mixing potassium feldspar and limestone according to a mass ratio of 1: 3 by wet mixing; S2, preparing the mixed material in the step S1 into a first sample according to a water-cement ratio of 0.27; S3, naturally drying the first sample in the step S2 at room temperature, putting the first sample into a muffle furnace, and calcining the first sample at 950 DEG C; and S4, curing the first sample in the step S3. According to the method, the potassium feldspar and limestone are used as raw materials and calcined at 950 DEG C for 6 hours, the content of CaO, 2CaO. SiO2 and 2CaO. Al2O3.SiO2 in a product is similar to that of the components of European hydraulic lime NHL3.5, and the blank about preparation of NHL3.5 hydraulic lime in China is filled.

The invention relates to a grouting proppant for repairing grotto cracks, and a preparing and using method thereof. The preparing and using method comprises the following steps: washing a cultural relic matrix material with water, and uniformly mixing the cultural relic matrix material, natural hydraulic lime, kaolin, potassium silicate and a water reducing agent to obtain a mixed dry material; adding water into the mixed dry material, and stirring until uniformity to obtain a slurry; taking and ball-milling kaolin and natural hydraulic lime, fully drying the slurry after ball-milling is finished, crushing and sieving the dried slurry to obtain a raw material, and adding water or drying the raw material to control the water content of the raw material to be 25-30% so as to prepare raw material balls; firing the raw material balls to form ceramsites which comprise large ceramsite and small ceramsite; and filling the cracks with the large ceramsite firstly to play a supporting role, thenfilling the small cracks with the small ceramsite, pouring the slurry to fill remaining cracks, and solidifying the slurry to complete crack repairing. The cracks filled with the grouting proppant isnot prone to cracking, and has a long repair validity period; and the prepared ceramsite and the slurry have good compatibility with cultural relics, and are suitable for repairing grotto cultural relics.

The invention discloses a cementless salt storage mortar composition and a preparation method thereof. The composition is prepared from, by weight, 50-65% of aggregates, 10-20% of lightweight aggregates, 20-35% of natural hydraulic lime and 1-2% of assistant. The invention further discloses the preparation method of the cementless salt storage mortar composition. According to the cementless salt storage mortar composition, the composition is high in porosity and excellent in water absorption and permeability balance, so that salt in a wall body can be absorbed to the interior of a material toprevent a decoration layer of the wall body from being destructed by the salt, weathering acceleration of the facade of the wall body caused by the fact that the salt residual on the facade of the wall body is prevented, attractive appearances of historical buildings and industrial heritage buildings are guaranteed, more comprehensive protection is provided for the historical buildings and the industrial heritage buildings, and the cementless salt storage mortar composition has significant market and social value.

The invention provides hydraulic lime and a preparation method thereof. The preparation method comprises the following steps: preparing raw materials, and grinding the prepared raw materials until thescreen residue with the particle size of 0.2 mm is not more than 5% and the screen residue with the particle size of 0.09 mm is not more than 15% to obtain hydraulic lime, wherein the prepared raw materials comprise, by mass, 50%-90% of carbide slag and the balance cement clinker, and the carbide slag comprises, by mass, 75%-95% of calcium oxide, 0%-10% of silicon dioxide, 0%-5% of aluminum oxideand no more than 3% of sulfur trioxide. The preparation method disclosed by the invention has the advantages of short process flow, simplicity in operation, low energy consumption, low production cost, suitability for large-scale production and the like; and the hydraulic lime can be widely applied to the aspects of cultural relic protection, ancient building repair, historical building repair and reinforcement and the like, and has the advantages of good flexibility and constructability, good viscosity and the like.

The present invention relates to a sound deadener melt pad composition, wherein the composition includes an asphalt, EVA H2020, a oil palm fibre, a hydraulic lime and an oil palm olein.

The invention discloses lime mortar for dry-hanging masonry wall joint filling and a preparation method thereof.The lime mortar is prepared from hydraulic lime, blast furnace slag, aluminate cement, aggregate, an additive and water, the hydraulic lime mortar serves as a dry-hanging masonry wall joint filling material, the elastic property and durability of the material are improved, and the dry-hanging masonry wall joint filling material is suitable for being used as a dry-hanging masonry wall joint filling material. The resource and environment problems caused by the blast furnace slag are alleviated to a certain extent; the expanded aluminate cement is slightly expanded in volume and is adaptive to structural deformation, and the additive improves the breaking strength and compressive strength of the mortar, so that the mortar can better play a role in caulking.

The invention relates to early-strength multi-scene applicable natural hydraulic lime slurry, which comprises the following components in percentage by mass: and water, the water cement ratio is 30%-60%, and the ash comprises the following components in percentage by mass: 94%-99.9% of natural hydraulic lime and 0.1%-6% of an isobutylene-maleic anhydride copolymer. The preparation method comprisesthe following steps: dissolving the isobutylene-maleic anhydride copolymer in water, and uniformly mixing an isobutylene-maleic anhydride copolymer aqueous solution with natural hydraulic lime. According to the prepared slurry, the early strength and fluidity of natural hydraulic lime are improved, the service life of the natural hydraulic lime is prolonged, and the application scene of the natural hydraulic lime is expanded.

The invention relates to the technical field of building materials, in particular to a mortar composite material for repairing ancient buildings and a preparation method of the mortar composite material. The mortar composite material is characterized in that an epoxy resin composition is added into an inorganic cementing material composition containing natural hydraulic lime, wherein the epoxy resin as an organic material for buildings has many excellent characteristics such as high adhesion and high toughness in the repair work of ancient buildings; the organic material and the inorganic material are combined, so that the brittle fracture resistance of the prepared mortar is improved by utilizing the high toughness effect of the epoxy resin; and the characteristic of poor durability of the epoxy resin is made up by high durability of the natural hydraulic lime, and the problem of insufficient adhesion of the natural hydraulic lime is made up by high adhesion of the epoxy resin, so that the advantages of the two materials are complementary, the adhesion and toughness of the mortar are improved, and after the mortar is subjected to high temperature, water soaking and long-time illumination, the bonding strength of the interface is still higher than 1.5 MPa.