40results about How to "Reduce fold ratio" patented technology

The invention provides single-component t high-performance mortar for repairing and reinforcing concrete, which comprises the following components in part by mass: 200g of sand, 55 to 75 parts of ordinary portland cement, 10 to 30 parts of sulphate aluminium cement, 3 to 7 parts of siliceous dust, 8 to 12 parts of flyash, 0.18 to 0.22 part of water reducing agent, 2 to 4 parts of flexibilizer, 0.04 to 0.06 part of water-retaining agent, 1.0 to 2.0 parts of swelling agent and 0.1 to 0.2 part of polymer synthetic fiber. The single-component t high-performance mortar has the advantages of high initial strength, good adhesion, excellent cracking resistance, low ratio of compressive strength to flexural strength, excellent toughness, simple and convenient construction, single component, no toxin or smell, no harm to human bodies, and environmental protection without pollution.

A hollow microsphere masonry dedicated thermal insulation mortar and a dedicated surface mortar, especially a wall self-insulation system-matching hollow microsphere masonry dedicated thermal insulation mortar and a dedicated surface mortar, relate to a constuction energy-saving technology. The hollow microsphere masonry dedicated thermal insulation mortar comprises, by weight, 20-30% of special cement, 2-6% of coal ash, 20-35% of quartz sand, 5-8% of master batch, 35-45% of hollow microphere, and 3-6% of coarse whiting; and the hollow microsphere masonry dedicated surface mortar comprises, by weight, 28-40% of ordinary Portland cement, 3-6% of coal ash, 7-10% polymer, 40-55% of quartz sand, 10-16% of hollow microsphere, and 1-3% of coarse whiting. With a low heat conductivity coefficient, excellent thermal insulation effect, high compression strength, high bonding strength, low contractibility, environment-friendly and fire-proof properties and notable composite economic results, the wall self-insulation system-matching dedicated thermal insulation mortar and a dedicated surface mortar provided in the invention can be widely popularized and used in wall self-insulation system buildings.

The invention relates to a pavement/bridge deck concrete fast mending material and application thereof. The mending material comprises the following raw materials by weight: 20 to 30 parts of sulphoaluminate cement, 8 to 10 parts of ordinary Portland cement 52.5, 5 to 10 parts of polymer powder, 0.5 to 1.5 parts of aluminium sulphate, 1 to 2 parts of water glass, 0.1 to 1 part of organic silicon, 1 to 2 parts of gypsum, 2 to 3 parts of slag, 0.1 to 0.5 part of silica micropowder, 0.5 to 1 part of an HPCA high-performance concrete expansive material, 3 to 5 parts of fly ash, 20 to 30 parts of washed-out and dried sand, 25 to 30 parts of corundum, 3 to 5 parts of composite fiber, 1 to 3 parts of a polycarboxylate superplasticizer, 0.1 to 0.5 part of boric acid, 0.1 to 0.3 part of sodium gluconate, and 0.2 to 1 part of lithium carbonate. The mending material is high in early strength, and has the advantages that traffic can be opened fast only 1 to 2 hours after mending is completed, so as to reduce traffic jams, and effectively reduce the generation of traffic accidents.

The invention discloses a hydrophobic outer wall heat-preservation anti-cracking mortar and a method for making the same. The mortar takes cement and fine sand as base materials, and is formed through adding in hydrophobic active chemical substances, i.e. a water retention agent and corresponding agglomerant, an expansion agent and fiber; the waterproof function of the mortar is that the hydrophobic active chemical substances can be absorbed on the inner surface of the pore of cement mortar so as to form a hydrophobic surface film, thereby preventing outside moisture from infiltrating into the mortar and reaching the action of water proofing and leakage resistance. The hydrophobic outer wall heat-preservation anti-cracking mortar has the advantages of water proofing, cracking prevention, leakage resistance, heat preservation, heat insulation, excellent bonding property, high strength, low degree of shrinkage, low coefficient of thermal conductivity, ideal workability and application property and low fold ratio, and is a novel heat-preservation heat-insulation material. The heat-preservation heat-insulation building built by the mortar is not cold in winter and not hot in summer indoors, thereby greatly improving dwelling environment and saving energy resources; moreover, all indexes and particularly the hydrophobic index of the mortar are up to advanced domestic level, and have remarkable social benefit and economic benefit.

The invention relates to protection mortar specially used in heat preservation layer in building and a preparation method. The protection mortar is a dry mixed powder somatotype mortar or ready-mixed somatotype mortar. The weight portions of each component is 4-30 portions of short steel fiber, 10-25 portions of powder material, 0.5-8 portions of water retaining agent 5-35 portions of aggregate, 0.5-30 portions of polymer cement modification material, 10-30 portions of water and 10-30 portions of cement. The protection mortar not only simplifies the operation process, but also has the advantages of strong impact resistance, low press-breaking rate, strong durability and excellent crack resistance.

The invention relates to the technical field of building energy saving, in particular to an energy-saving self-insulation wall and a construction process thereof. A self-insulation wall material is built into a self-insulation wall base through insulation mortar special for hollow microsphere masonry for the energy-saving self-insulation wall; a protective layer is made outside the self-insulation wall base through plaster mortar special for the hollow microsphere masonry; an impermeable anti-cracking layer is made outside the protective layer; a facing layer is made outside the impermeable anti-cracking layer; thus, the energy-saving self-insulation wall is formed. The insulation mortar and plaster mortar special for the hollow microsphere masonry have a small heat conductivity coefficient, high compressive strength, good adhesion, good workability, and small shrinkage, prevent energy loss of masonry mortar joints, eliminate 'cold and heat bridges' in blocks and greatly enhance insulation and energy-saving effects of the self-insulation wall, so that physical performance indexes of a building wall, such as thermal performance, are better than those in the standard for energy-saving self-insulation buildings. The energy-saving self-insulation wall is a building structure good in energy-saving and insulation effects, environment-friendly, fireproof and significant in economic benefit and is widely applicable to energy-saving self-insulation system buildings.

The invention discloses an anti-cracking heat-preserving wall construction material and a preparation method thereof. The anti-cracking heat-preserving wall construction material is prepared from, by weight, 400-600 parts of cement, 40-70 parts of silica powder, 80-220 parts of ash-calcium powder, 80-160 parts of expanded vermiculite, 60-100 parts of sand, 60-100 parts of hollow glass beads, 40-80 parts of rock wool threads, 30-80 parts of modified fly ash, 60-120 parts of polyphenyl particles, 10-20 parts of wood fiber, 5-10 parts of polypropylene fiber, 30-60 parts of polyvinyl alcohol, 40-80 parts of dispersible latex powder and 10-20 parts of cellulose ether. The anti-cracking heat-preserving wall construction material solves the problem that finishing mortar prepared from an existing outer wall heat-preserving material is prone to cracking and poor in durability, and truly achieves heat preservation, heat isolation and high anti-cracking performance.

The invention provides a cement-based steel slag sand mending material used for mending buildings. Raw materials for the mending material comprise, by weight, 50 to 78% of steel slag sand with a particle size of no more than 4.75 mm and 22 to 50% of silicate cement. According to the invention, steel slag can be used to fully replace river sand, and the mending material prepared from the steel slag has better tensile bond strength than that of a mending material prepared from natural river sand. When a plurality of auxiliary materials are properly added, the mending material better presents the advantages of high bond strength, good flexibility, appropriate anti-compression and flexural strength, a low ratio of compressive strength to flexural strength, good wear resistance, good crack resistance, a small drying shrinkage value and good compatibility with a cement concrete material. According to the invention, the raw materials are widely available and cheap, and industrial waste, i.e., steel slag, is fully utilized; a product obtained after uniform mixing of the raw materials in proportion has stable quality and is simple to construct and operate on site; after mixed with water, the mending material provided by the invention has good workability and water retention performance and is nonhazardous, pollutionless, green, environment-friendly and energy saving mending mortar for buildings.

The invention discloses a production method of foam cement including the components: 42.5-grade ordinary portland cement, 30% hydrogen peroxide, sodium nitrite, calcium oxide, sodium chloride, an aluminum powder, sodium thiosulfate, an iron powder, nekal, tartaric acid, triisopropanolamine, ammonium chloride, rosin, bone glue, sodium hydroxide, gypsum, sodium carbonate, a 5% polyvinyl alcohol solution and water with the mass ratio of 1000:21.3:14.2:14.2:14.2:0.01:2.5:1.1:0.5:0.3:3:1.3:2.1:0.14:1.5:1.9:0.1:0.6:238; concrete prepared from the foam cement has the bending tensile strength and stiffness similar to those of ordinary cement concrete, has the ratio of compressive strength to flexural strength decreased compared with ordinary foamed concrete; and the formula saves 20%-30% of cement than ordinary foam cement.

The invention relates to dry-mixed mortar for a pavement and a preparation process of the dry-mixed mortar. The invention relates to the technical field of building materials. The dry-mixed mortar specifically comprises the following components in percentage by weight: 11-13% of cement, 6-8% of mineral powder, 17-20.5% of fly ash, 26-33% of yellow sand, 9-11% of modified bentonite, 10-13% of stonepowder, 2.5-4% of thickening powder, 1-2% of waterproof agent, 1-2.5% of redispersible latex powder, 1-2% of expanded perlite and 1.5-3% of an additive. The preparation method of the modified bentonite is as follows: 1) adding 20-30kg of glucose into 300-400L of water and stirring until the glucose is completely dissolved; 2) continuously adding 100-120 kg of bentonite and continuously stirring to uniformly disperse the bentonite; 3) adjusting the pH to 12-13, then raising the temperature to 80-120 deg c, stirring for 4-6 hours, centrifuging after stirring, washing the precipitate with waterfor 3-5 times, and drying. The mortar prepared by the method has the effects of good wear resistance, long service life of the pavement and reduction of maintenance cost of the pavement when laid on the pavement.

The invention discloses a micro pile mortar admixture which is used for preventing mortar from corrosion due to environment interferences and preventing the mortar from cracking in a hardening process and cracking in a using process. The admixture comprises the following components in percentage by weight (based on the dosage of cement): 0.2%-0.5% of polypropylene fiber, 0.5%-1% of coal ash, 0.3%-1.5% of FDN naphthalene-series efficient water reducing agent and 1%-3% of U type expanding agent, which are used as a mixing type additive for mixing pile body mortar, wherein the mixing amount is 2%-5% of the dosage of the cement.

The invention provides a semi-flexible pavement cement-based adhesive cement composition and a preparation method thereof, and belongs to the technical field of pavement materials, the semi-flexible pavement cement-based adhesive cement composition is prepared from the following raw materials by weight: 100-120 parts of cement, 20-30 parts of inorganic nano hollow particles, 5-30 parts of quartz sand, 1-5 parts of a polymer emulsion, 0.1-1 part of a thixotropic agent, 0.1-2 parts of an antifoaming agent, 0.1-0.7 part of an expanding agent and 150-200 parts of water; the particle size of the quartz sand is 0.5-2 mm; and the cement is 42.5 sulphoaluminate cement. The semi-flexible pavement cement-based adhesive cement disclosed by the invention is good in fluidity, good in rheological property of a whole system, relatively good in mechanical property, good in high-temperature rutting resistance, low-temperature cracking resistance, water damage resistance and fatigue resistance, and capable of prolonging the service life of a pavement.