46results about How to "High impermeability level" patented technology

The invention relates to a manufacture method for polyocarboxy acid series concrete compound water proof agent that includes polyocarboxy acid water reducing agent 20-80 portions, multihydroxyl carboxyl compounds 1-10 portions, air entraining agent 0.1-1.0 portions. The advantages of the invention are that: it decreases self contraction and dry contraction inner concrete, increasing degree of compaction, decreasing concrete capillary fissure, achieving the ability of water proof and anti-leaking function; the anti-leaking grade is over the other water proof agent; it has slushing pumping, water poof, and constration anticracking function; and has high quality and low price.

The invention discloses a chloridion-corrosion resistant concrete synergist. The component percentage is anti-bleeding component : anti-permeability waterproof component : enhancing component : dispersing component : entraining component : coordinating component; the anti-bleeding component comprises polysaccharide and/or cellulose ether and/or polyacrylamide, the anti-permeability waterproof component comprises methyl sodium silicate and/or organosilicon waterproofing agent, the enhancing component comprises glycol monoisopropanolamine, composition of the glycol monoisopropanolamine and triethanolamine and triisopropanol, the dispersing component comprises MF and/or TCL and/or NNO, the entraining component comprises dodecyl benzene acid sodium and/or dodecyl benzene sodium sulfate, and the coordinating component comprises polymeric alcohol amine and polymeric polyhydric alcohol. The invention further provides a production technology for the chloridion-corrosion resistant concrete synergist. The chloridion-corrosion resistant concrete synergist is capable of improving the concrete strength, reducing the bleeding rate and reducing the slump loss.

The invention discloses a green rapid-hardening early-strength magnesium phosphate-based healant and a preparation method thereof. The green rapid-hardening early-strength magnesium phosphate-based healant is composed of a material A and a material B; the material A is prepared via mixing of a phosphate, borax, a toughening ingredient, an accelerating component, a water retention ingredient, a water reducing ingredient, and a grinding aid dispersing agent; and the B material is prepared via mixing of magnesium oxide, flyash, silica fume, ground steel slag, chromium iron tailing slag powder, anhydrite, an expanding agent, and a grinding aid dispersing agent. According to the preparation method, industrial supplementary cementious materials (flyash, silica fume, and ground steel slag) are added into cement, so that cement fluidity and early strength are improved; industrial chromium iron tailing slag powder is added into the green rapid-hardening early-strength magnesium phosphate-based healant as a filling material, so that it is beneficial for cement hydration reaction, set cement compaction rate is increased, and at the same time heavy metal waste solidification is realized. The green rapid-hardening early-strength magnesium phosphate-based healant is capable of achieving balance between magnesium phosphate cement setting time and high early strength, and solving problems that shrinking percentage is large and bonding strength is low.

The invention discloses a novel concrete synergist. The percent of the components of the novel concrete synergist is 60% to 80% of anti-bleeding component, 5% to 15% of enhancement component, 2% to 20% of densification component, 0.5% to 10% of dispersion component, 0.2% to 2% of entraining component and 1% to 8% of compounding component; the anti-bleeding component contains polysaccharides and/or cellulose ether and/or polyacrylamide; the enhancement component contains ethylene glycol isopropanolamine and composition of the ethylene glycol isopropanolamine, triethanolamine and triisopropanolamine; the densification component contains nano silicon dioxide and/or colloid silicon dioxide monomers; the dispersion component contains MF and/or TCL and/or NNO; the entraining component contains sodium dodecyl benzene sulfonate and/or sodium lauryl sulfate; the compounding component is polymeric alcohol amine and/or polymer polyol, respectively. The invention further provides a preparation process of the novel concrete synergist. The novel concrete synergist and the preparation process have the flowing technical effects that 1, the strength of concrete can be enhanced; 2, the usage of cement is reduced under the same strength; 3, the permeability coefficient of chloride ions can be reduced, and the slump loss is reduced.

The invention provides a sprayable, waterproof, anticorrosive and erosion-resistant high-strength mortar and a using method thereof, and belongs to the technical field of building materials. The sprayable, waterproof, anticorrosive and erosion-resistant high-strength mortar comprises, by mass, 300-380 parts of a Portland cement clinker, 22-45 parts of silica fume, 20-50 parts of ultrafine mineralslag powder, 450-600 parts of active steel slag, 0.2-0.6 part of a dispersant, 0.5-1.2 parts of an antifoaming agent, 1-2 parts of a stable thickening agent, 0.01-0.05 part of hydroxyethyl cellulose ether, 5-20 parts of waterproof rubber powder and 1-3 parts of a water repellent. The sprayable, waterproof, anticorrosive and erosion-resistant high-strength mortar has the advantages of high impermeability, high compressive strength and bonding strength, excellent alkali resistance, excellent sulfate corrosion resistance, excellent hydrophobicity, low shrinkage rate and good volume stability.

The invention provides an alkali-free setting accelerator. The alkali-free setting accelerator contains the following raw materials: aluminum sulfate, a coordination agent, organic alcohol amine and amide matters. The invention further provides a production method of the alkali-free setting accelerator. Compared with the prior art, the alkali-free setting accelerator has the beneficial effects that the accelerator can meet the quick setting requirement of wet spraying concrete, the environment-friendly and pollution-free construction environment can be realized, the stable quality of sprayed concrete is guaranteed, and meanwhile, the long-term strength and impermeability grade of the sprayed concrete can be greatly increased. The alkali-free setting accelerator is long in storage time, canresist temperature change and is totally non-alkaline.

The invention belongs to the technical field of building materials, and particularly relates to a high-anti-permeability cement-based repair material for tunnel engineering. The repair material consists of portland cement, coal ash, silica fume, steel slag powder, rock powder, tailing sand, quartz sand, attapulgite, acrylate emulsion, cellulose ether, polyacrylamide, PVA fibers, PET fibers, a polycarboxylic acid water reducer and a defoaming agent. The repair material has the characteristics of easy construction, good working performance, good water retention performance, high compressive strength, high anti-permeability level, high toughness and adhesion, excellent durability and the like; and the repair material can be suitable for construction initial protection or engineering later maintenance and repair of lining concrete in the tunnel engineering.

The present invention relates to one kind of cement concrete admixture for repairing cement concrete road. The cement concrete admixture consists of industrial slag 70-80 wt%, bentonite 10-15 wt% and silica powder 8-15 wt%, and is produced through mixing the materials and grinding to specific surface area greater than 500 sq m/kg. It is added into cement concrete, with the weight ratio between cement and the admixture being 1 to 0.025-0.035. It has the features of high early strength, slight early expansion, no after shrinkage, anticracking and antiseepage, no corrosion to reinforcing bar, etc. It is especially suitable for use in the repair engineering of cement concrete road, bridge, culvert, tunnel, etc.

The invention discloses an alkali-free concrete accelerator and a processing method thereof. The alkali-free concrete accelerator comprises the following raw materials in parts by weight: 30-65 partsof aluminum sulfate, 2-8 parts of an organic amine, 1-3% of a stabilizer, 1-5 parts of a suspending agent, 20-35 parts of water, 2-5 parts of bentonite and 4-6% of magnesium fluosilicate. In the present invention, the caulking agent for building decoration of prefabricated parts is simple in preparation method, low in cost, is liquid after preparation, can be uniformly mixed with concrete conveniently, contains no alkali or chlorine or pungent smell, is high in safety, is harmless to human body, is excellent in cohesiveness; adding of a stabilizing agent can prolong the storage time, preventdeterioration; magnesium fluosilicate and aluminum sulfate are adopted for cooperative using, so that the resilience value is low, later strength retention rate is high, and impermeability grade is high; adding of the alkali-free concrete accelerator in sprayed concrete is capable of achieving a preferable working environment and considerable market value.

The invention discloses antibacterial mildew-proof waterproof leakage blockage mortar. Nanometer ferriferrous oxide is added and is subjected to organic modification; the surface energy is reduced, so that the surface amphipathicity is realized; by using a three-dimensional protection effect, nanometer particles are uniformly dispersed into the mortar and cannot agglomerate; the pressure-resistant intensity of the product is improved; then, the materials are mutually compounded with polymer styrene acrylic emulsion and polypropylene fiber; through the physical and chemical effects, the surface energy of the polypropylene fiber is improved, so that the bonding force with the mortar is improved; the generation of early-stage micro cracks is well inhibited, so that the seeping resistance performance, the bending resistant intensity and the durability of the product are improved; the boiler ash are modified and are then added into the raw materials to be matched with other effective additives, so that each ingredient o the mortar is uniformly dispersed and cannot easily settle; the waterproof performance of the leakage blockage mortar is obviously improved; the prepared waterproof leakage blockage mortar has the good antibacterial mildew-proof waterproof performance, high seepage resistant stages, high pressure resistant intensity and good anti-aging performance, and has the advantages that the construction is convenient; the cost is low; green and environment protection effects are achieved.

The invention belongs to the technical field of building waterproofing, and discloses a pre-paving anti-sticking waterproof structure and a construction method. The structure sequentially comprises a concrete cushion layer, a pre-laid polymer waterproof roll layer, an anti-seepage self-repairing waterproof layer and an anti-seepage concrete layer from bottom to top. According to the waterproof structure, the rigid-flexible design principle is adopted, the deformation resistance and crack resistance of the waterproof structure are achieved by means of high extension and high strength of the pre-laid polymer waterproof coiled material, meanwhile, the dry-spread cement-based capillary crystalline waterproof material can improve the local anti-seepage grade and compressive strength of the anti-seepage concrete, an anti-seepage self-repairing waterproof layer is formed, and the anti-seepage performance of the waterproof structure is improved. And the dry-spread cement-based capillary crystalline waterproof material also has the capability of improving the self-repairing capability of the concrete in a water leakage environment.

The invention relates to rigid self-compacting waterproof concrete for underground engineering building construction and a preparation method of the rigid self-compacting waterproof concrete. The concrete is mainly prepared from water and the following components in parts by weight: 300-330 parts of Portland cement, 1050-1100 parts of coarse aggregate, 680-720 parts of fine aggregate, 80-90 partsof precoated sand, 18-20 parts of silica fume, 5.2-5.6 parts of an additive and 0-25 parts of an expanding agent, wherein the ratio of water to binder is 0.36 to 0.40; the precoated sand takes fine sand as a core, and the surface of the fine sand is coated with a siliceous film layer formed by an organic silicon material and a powder layer mainly formed by a waterproof admixture. The rigid self-compacting waterproof concrete mixture has the advantages of good workability, uniform and compact concrete structure, high mechanical strength and good impermeability and waterproofness; compared withcommon waterproof concrete, the rigid self-compacting waterproof concrete mixture is high in impermeability grade, good in durability, wide in raw material source and suitable for underground engineering building construction operation.

The invention provides a hydrophobic polymer emulsion and its application. An emulsification system having little influence on the cement performances including setting time, compressive strength and flexural strength and functional monomers are synthesized into a hydrophobic polymer emulsion for a polymer cement base waterproof material by an emulsion polymerization method; and then on the basis of the hydrophobic polymer emulsion, the polymer cement base waterproof material can be manufactured. The material has excellent waterproof and moisture-proof performances, can be used for water and moisture prevention of toilet, wall, roofing and basement of buildings, and bridge and tunnel; and the material has good affinity with cement mortar, and the waterproof layer surface can be directly coated with the cement mortar, without affecting the bond behavior.

The invention discloses a method for repairing a draught fan concrete foundation cavity through high polymers. The method comprises the following steps of 1, appearance analysis and detection, 2, closed circuit television detection, 3, cavity connectivity high-pressure gas detection, 4, injection tube cap manufacturing, 5, injection tube cap installation and 6, high-pressure injection of the highpolymers, thereby completing repairing of the draught fan concrete foundation cavity through the high polymers. The non-excavation rapid maintenance method not requiring a draught fan to stop runningis provided in order to solve implicit diseases such as disengagement in a wind power large-size concrete structure and looseness of a foundation ring, and the method has a low degree of constructiondisturbance, high efficiency and remarkable technical advantages and economic and social benefits as well as broad application prospects.

The invention discloses a high-wear-resistant building material and a preparation method and application thereof. The high-wear-resistant building material comprises the following raw materials in parts by weight: 45-55 parts of portland cement, 20-30 parts of fine sand, 12-20 parts of guar gum, 16-24 parts of vermiculite and 7-15 parts of ethanol amine. The preparation method comprises the following steps: mixing and grinding vermiculite; mixing the ground vermiculite with an ethanol amine solution; performing heating, sealing and stirring for 2.2-2.4 h; performing centrifugal separation; taking a deposit; washing and then drying the deposit; adding guar gum; performing ball-milling; mixing with portland cement and fine sand; performing uniform stirring; and performing casting, vibrationand maintenance to obtain the high-wear-resistant building material. The high-wear-resistant building material is higher in compressive strength and rupture strength, and is remarkably improved in VCvalue, seepage resistance grade, anti-freezing strength, ultimate tensile property, adiabatic temperature rise, chemical corrosion resistance and the like, the erosion and abrasion resistance is effectively improved, the crack resistance is improved, and the high-wear-resistant building material is particularly suitable for environments such as hydraulic drainage buildings, which demand more on the erosion wear resistance and the crack resistance of concrete.

The invention discloses anti-freezing concrete and a preparation method. The anti-freezing concrete is composed of aggregate, a cementing material, a water reducing agent, a waterproof agent and water, each cubic meter of the anti-freezing concrete contains 18-17kg of the aggregate, 400kg of the cementing material, 7.2kg of the water reducing agent and 10kg of the waterproof agent, the content ofwater is calculated according to the weight ratio of water to cementing material of 0.44: 1, the aggregate is composed of medium sand and broken stone, the broken stone is formed by continuously proportioning broken stone with the particle size D of greater than or equal to 5mm and less than 20mm and broken stone with the particle size D of greater than or equal to 20mm and less than or equal to 40mm in two stages. The preparation method comprises the steps of adding water accounting for 1/3-1/2 of the total volume into the water reducing agent, uniformly mixing the obtained water reducing agent aqueous solution with the cement, the II-grade fly ash and the waterproof agent, adding the medium sand, the gravels and the residual volume of water, controlling the rotating speed to be 80-100r/min, and stirring for 60-180 seconds, thereby finally obtaining the anti-freezing concrete with high compactness, small shrinkage and excellent anti-freezing property.

The invention belongs to the technical field of construction materials, and provides concrete for construction in an underground contaminated environment in order to solve the problems that the existing concrete has a poor effect in resisting corrosion, cracking and water simultaneously, and cannot resist the geology in the contaminated environment effectively, and consequently, the concrete and steel bars are corroded, resulting in poor durability of reinforced concrete. The concrete for construction in the underground contaminated environment is prepared by mixing common portland cement, silicon dioxide, calcium carbonate, calcium oxide, aluminum oxide, iron oxide, magnesium oxide, sulfuric anhydride, a polycarboxylate high performance water reducing agent, water, anhydrous calcium sulphoaluminate and anhydrous calcium sulfate according to a certain proportion. The cement has high quality, and is improved in impermeability grade and lowered in cracking area and corrosion rate by addition of the anhydrous calcium sulphoaluminate and the anhydrous calcium sulfate, thereby improving the water-proof, anti-crack and anti-corrosion performance; the concrete can resist the damage of various gaseous, liquid-state and solid-state corrosive mediums in the underground contaminated environment.