61results about How to "Dry shrinkage is small" patented technology

A self-leveling cement mortar dry powder for insulated composite wallboard waterproof cover, and an insulated wallboard solve technical problem in a prior art that self-leveling cement mortar with weak waterproofness causes weak insulation effect of an insulated wallboard. A self-leveling cement mortar dry powder for insulated composite wallboard waterproof cover is employed as a technique. Ingredients of the self-leveling cement mortar dry powder comprise a compound impervious component; and the impervious component is prepared by mixing a redispersible high-molecular polymer and one of an organosilicon waterproof agent and a stearate, or a mixture of the two, and accounts for 0.6-4.3wt% of the self-leveling cement mortar dry powder. A special impervious ingredient is added to enhance compactness, microdilatancy and low dry shrinkage property of the cement based self-leveling mortar, so as to substantially increase waterproof function and endurance of the cement based self-leveling mortar. Therefore, a problem that a cladded super-light foaming cement sheet material loses insulation function due to water penetration and problems of flame resistance and endurance are solved fundamentally.

The invention belongs to the technical field of building materials, and in particular relates to a high-flexibility and low-shrinkage fiber reinforced cement-based composite material. The composite material is prepared by mixing cement, coal ash, silicon powder, gypsum, an expanding agent, a water reducing agent, a shrinkage reducing agent, a defoaming agent, a thickening agent, fine sand, fibers and water, wherein the total mass percentage of the cement, the coal ash, the silicon powder, the gypsum, the expanding agent, the water reducing agent, the shrinkage reducing agent, the defoaming agent, the thickening agent, the fine sand and the fibers is 77-85 percent, and the mass percentage of the water is 15-23 percent. The fiber reinforced cement-based composite material has the performance characteristics of low shrinkage, high flexibility, small crack width, quickness in condensation and early strength and is high in compressive strength and good in synergism with other materials.

The invention discloses a process for repairing the surface wounds of concrete with basalt fiber plaster which is high strength and abrasion resistance. The repairing steps comprise firstly conducting chiseling, cleaning and curing moisture holding for the repair surface, and then brushing binding agent on the repair surface, then brushing basalt fiber plaster after slightly drying, and finally conducting the curing. The invention primarily proposes a process for repairing the large area wound such as surface concrete aging, carbonizing and peeling and cracking and the like on the hydraulic structure such as locks, dams and bridges and the like through preparing basalt fiber plaster which is high strength and abrasion resistance with chopped basalt fiber. The experiment shows that the surface concrete of hydraulic structure which is repaired has excellent mechanic property, impact abrasion resistance and excellent durability such as permeability resistance and anti-freezing, and favorable binding property, can meet the technical requirements of high speed sand inclusion current abrasion and corrosion resistance and ship attack and the like. And the repairing process has simple technology, low cost and excellent effect.

The invention relates to road delayed-coagulation cement and a preparation method thereof. The road delayed-coagulation cement comprises special cement clinker, limestone waste, modified steel slag powder and phosphorus gypsum. According to the road delayed-coagulation cement, a cement raw material is prepared from carbon-containing shale, the phosphorus gypsum serves as mineralizing agents of clinker calcination, steel slag powder is prepared in a crushing, iron removing and grinding manner, the steel slag powder and the limestone waste serve as cement admixtures, and the phosphorus gypsum serves as a cement delayed coagulant. By the aid of the technical scheme, the prepared road delayed-coagulation cement has the advantages that coagulation time is suitable, early strength is high, laterstrength is rapidly increased, breaking strength is high, abrasion resistance is good, dry shrinkage performance is low and the like. Efficient resource utilization of solid waste such as the carbon-containing shale, the limestone waste, steel slag and the phosphorus gypsum is achieved, and the road delayed-coagulation cement has important economic benefits and social benefits.

The invention discloses basalt fiber composite reinforcement concrete and a preparation method thereof to mainly solve the problems of low strength, easy aging and poor compounding with concrete in the existing concrete. The basalt fiber composite reinforcement concrete comprises basalt fiber composite reinforcement and concrete, wherein the basalt fiber composite reinforcement is a fiber reinforcement material formed by surface treatment of basalt fibers, impregnation of composite resin and solidification; and the concrete comprises the following components: basalt short fiber, fly ash, clay,mountain gravel, quartz gravel medium sand, a water reducing agent, a zirconate coupling agent, and silicate cement. Through the above scheme, the basalt fiber composite reinforcement concrete provided by the invention achieves the purposes of good compounding between the basalt fiber composite reinforcement and concrete, and high strength, light weight and difficult aging of the basalt fiber composite reinforcement, and has very high practical and popularization values.

The invention provides a micro hollow fiber thermal insulating coating for buildings and an application method thereof. The micro hollow fiber thermal insulating coating for buildings is divided into a I-type single-component micro hollow fiber thermal insulating coating for buildings and a II-type double-component micro hollow fiber thermal insulating coating for buildings, and is used as an exterior wall thermal insulating coating or used to pipes and other various places needing coating the thermal insulating coating. The coating is added with super hollow fibers and aramid fibers with high-temperature resistance, acid and alkali resistance and light weight, so that the coating has the advantages of low thermal coefficient and heat storage coefficient, obvious heat retaining effect, nontoxic formula, environmental protection, excellent fire resistance, super-strong chemical stability, high cohesional strength, noise removal, high cost performance, long service life, wide application, simple and easy construction, good effect, labor and physical resource conservation, and obvious economic and environment-friendly benefits.

The invention provides high-performance microscopic microfiber building heat insulation and heat preservation slurry with high tensile strength, compressive strength, heat insulation performance and tear resistance, and a using method thereof. The slurry comprises the following components of crylic synthetic resin, fluorinated silicone synthetic resin, a water retention thickening agent solution,a sepiolite fiber, a vermiculite fiber, a mullite fiber, powdered silicon dioxide, pearlife, a rock wool fiber, hollow ceramic microballs, a defoaming agent, a mildewproof bacteriacide and water; andfurthermore, white portland cement, a reinforcing agent and water which is 20 to 30 weight percent of a component A can be added.

The invention discloses light compound thermal-insulation mortar. The light compound thermal-insulation mortar comprises the following components in parts by weight: 35-40 parts of cement, 8-12 parts of converter slag granules, 12-18 parts of a reinforced material, 16-22 parts of compound thermal-insulation aggregate, 0.25-0.35 part of resin type redispersible powder, 0.6-0.9 part of cold water type polyvinyl alcohol, 0.1-0.2 part of hydroxypropyl methyl cellulose, 0.01-0.03 part of air entraining agent, 0.06-0.1 part of water glass, 0.005-0.01 part of inorganic retarder, 8-13 parts of polyphenyl granules, 30-50 parts of glass beads and 0.2-0.5 part of concrete water-proofing agent. The light compound thermal-insulation mortar has the advantages that the cement is saved; meanwhile, the thermal-insulation aggregate is added, so that the mortar has a light effect; meanwhile, an thermal-insulation effect is enhanced; after the construction is finished, the mortar is unlikely to crack and fall and can effectively resist water and fire.

The invention relates to waste water sludge type cement, which is mainly mixed by cement and a product of waste water sludge. The product of waste water sludge is prepared by the method that waste water sludge, and acetylene gas slag or lime sludge, or waste water sludge, acetylene gas slag or lime sludge, bauxite slag, phosphogypsum or desulfurization gypsum, mineral slag and fly ash are in certain proportion with proper water to be added into a mixing and molding machine so as to be processed into nodules, after the nodules are naturally air dried into raw meal nodules, the raw meal nodules are dried and roasted, and the product of waste water sludge is prepared. Then the product of waste water sludge and cement clinker are mixed together in certain proportion to be ground into powder, that is, the waste water sludge type cement; or the product of waste water sludge is ground into powder, then the powder is mixed together with cement, and the waste water sludge type cement is formed. The product of waste water sludge can be mixed with pure clinker cement, and can be also mixed with other commercial cement. The method can process the waste water sludge, which is discharged from the waste water processing factories and is difficult to be processed, into high quality cement that has advantages of large demand, less investment, high wear-resisting strength, good frost resistance performance, small dry shrinkage performance, being favorable for environmental protection and reducing cost.

The invention discloses a nanometer Al2O3-Ca<2+>-based metakaolin geopolymer road repairing material. A formula comprises nanometer Al2O3, Ca(OH)2, calcined kaolin, sodium silicate, sodium hydroxide and distilled water according to a mass ratio of 0.02 to 0.1 to 1 to 0.1 to 0.05 to 0.3. A metakaolin geopolymer has good interfacial bond property and excellent durability and heat resistance, can beused for well repairing cracks and pit slots on a road, and can improve the service life of the road repairing material. Tests show that by adding the Ca(OH)2 into the metakaolin geopolymer, the setting time of the road repairing material can be shortened, and by adding the Al2O3, the compressive strength of the road repairing material can be obviously increased. The 1d compressive strength of theroad repairing material can reach 31 MPa; the initial and final setting time of the road repairing material is respectively 60 min and 295 min; the mechanical property is excellent; and the road repairing material can replace cement as a new green building material to a certain extent, and has a good application prospect.

The invention discloses an anti-cracking reconsolidated bamboo manufacturing method, which mainly comprises the steps of bamboo chip preparation, specifically, longitudinally splitting bamboo, and removing inner joints to form bamboo chips; ultrahigh-pressure treatment, specifically, conducting ultrahigh-pressure treatment on the bamboo chips by using a plasticizer as a pressure transmission medium, wherein the ultrahigh pressure is 200-400Mpa; softening treatment, specifically, placing the bamboo chips in a weak alkaline solution for softening treatment; rolling and splitting, specifically, rolling and flattening the bamboo chips in the radial direction, splitting the bamboo chips in the thickness direction, and then defibering and splitting the bamboo chips to form sheet-shaped bamboo bundles; gum dipping treatment, specifically, drying the sheet-shaped bamboo bundles, and then placing the sheet-shaped bamboo bundles in a vacuum high-pressure environment to be soaked in resin gum for10-30s; drying and balancing: specifically, drying the sheet-shaped bamboo bundles, and then placing the sheet-shaped bamboo bundles in a balancing kiln for moisture content balancing, wherein the balancing time is 7-15 days; and hot-pressing curing, specifically, preparing the sheet-shaped bamboo bundles into reconsolidated bamboo plates, stacking and heavily pressing the reconsolidated bamboo plates, aging for 7-10 days at the room temperature, and then conducting subsequent processing. The reconsolidated bamboo plates manufactured through the method can be effectively prevented from cracking, and the material cost is low.

The invention discloses a composite thermal-insulation mortar for outer walls, which is prepared from the following components in percentage by weight: 60-80 parts of cement, 0.25-0.35 part of resin-type redispersible latex powder, 0.6-0.9 part of cold-water polyvinyl alcohol, 0.1-0.2 part of hydroxypropyl methylcellulose ether, 0.01-0.03 part of air entraining agent, 0.06-0.1 part of water glass, 0.005-0.01 part of inorganic retarder, 8-13 parts of polyphenyl granule, 30-50 parts of vitrified microbead and 0.2-0.5 part of concrete waterproofing agent. The mortar has the advantages of favorable thermal-insulation effect and low tendency to bulging or shedding after construction, and can effectively resist water and fire.

The invention relates to the field of soft soil foundation hardening, in particular to a soft soil foundation curing agent prepared from industrial waste residues. The advantage that industrial residues are cheap is sufficiently used, and both the problem in treating industrial wastes and the problem in treating soft foundations of sludge soft clay can be solved; in addition, the curing agent provided by the invention is good in early strength, good in application and good in water stability and is capable of remarkably alleviating the problems that sludge soft clay in littoral regions is highin water content and low in shearing resistance.

The present invention discloses a cement grinding aid. The grinding aid comprises the following compositions components in parts by weightmass: 60-65 parts of alkali slag, 10-15 parts of straw ash, 15-20 parts of steel slag and 5-10 parts of calcium lignosulphonate, and the compositions components contain the following substances in based on the total mass percentage of the cement grinding aid by mass percentage: 30-41% of calcium oxide, 28-35% of silicon dioxidesilica, 8-16% of aluminum oxidealundum, 6-12% of sulfur trioxide and 5-8% of carbamideurea. The preparation method comprises the ofllowng steps: fFirstly, uniformly mixing and stirring the alkali slag, the straw ash, the steel slag and the calcium lignosulphonate are mixed and uniformly agitated; secondly, the mixture is preparing the mixture ed into spherical particles; lastlyand finally, stacking and curing the spherical particles are subjected to stacking, solidification and removing free water and partial part of water of crystallization removal, as a result to obtain, the a cement grinding aid is obtainedproduct. The cement grinding aid disclosed by the present invention is low in production cost, and good in product performance.

The invention relates to novel imitation antique city wall pointing mortar and a pointing method of the novel imitation antique city wall pointing mortar. The pointing mortar comprises the following components in parts by weight: 60 parts of fly ash, 40 parts of cement, and 180 parts of sand, wherein the fly ash is an original-state dry discharged fly ash, the cement is No.32.5 slag portland cement, and the sand is fine-to-medium sand. The pointing mortar disclosed by the invention has the advantages of small fly ash/cement dry shrinkage, good workability, low hydration heat, high late intensity, good sulfate corrosion resistance, and the like. In the aspect of environmental protection, waste fly ash of power plants can be effectively used, and the cement can be saved, thereby achieving the effect of energy conservation and environmental protection. The cost is reduced, the benefit is improved, and the economic benefit of enterprises is increased.

The invention provides a yellow phosphorus slag pavior brick and a production method thereof, which relate to the technical field of a pavior brick production method technology. The pavior brick comprises the following raw materials in parts by weight: 15-20 parts of cement, 30-35 parts of sand, 15-20 parts of pebble, 20-25 parts of yellow phosphorus slag powder, 10-15 parts of granular yellow phosphorus slag, 0.5-1 part of raw pulverized limestone, 0.2-0.5 parts of a water reducer, 0.5-2.5 parts of a delayed coagulant, and 4-6 parts of water. The production method comprises the following steps: 1) mixing sand, pebble, the yellow phosphorus slag powder, the granular yellow phosphorus slag and the raw pulverized limestone and stirring the materials to obtain a mixture; 2) adding the cement, the water reducer and the delayed coagulant in the mixture, adding water for stirring to obtain a mixed slurry, performing compacting moulding on the mixed slurry by a building block forming machine to obtain the molded building block; and 3) performing maintenance on the molded building block for 29-30 days at the temperature of 25-27 DEG C and humidity of 92-95%. The method solves the problems of non-utilization of waste, low compressive strength, low flexural intensity and low abrasion resistance of the current pavior brick.