689results about How to "Improve anti-seepage performance" patented technology

The invention relates to environmental-friendly waterproof polymer mortar, which comprises the following components in portion by weight: 50 to 230 portions of low-clinker silicate cement, 200 to 450 portions of quartz sand, 80 to 120 portions of fly ash, 1 to 18 portions of re-dispersible polyethylene vinyl acetate latex powder, 1 to 10 portions of dispersible polyvinyl acetate vinyl versatate latex powder, 0.2 to 0.6 portion of water reducing agent, 0.05 to 0.3 portion of antifoaming agent, and 0.25 to 2.25 portions of polypropylene fibers. A gel material prepared from steel slag, tailings and the fly ash replaces silicate cement and partial aggregate in the prior mortar; the modified waterproof polymer mortar has the advantages of excellent impermeability, good mechanical property and construction property, simple production technology, and easy manufacture, greatly consumes industrial and mining wastes, controls the ecological environment, and lowers the cost; and the product has reliable quality and wide market; and the environmental-friendly waterproof polymer mortar can be popularized and applied in large area.

The invention relates to a cement-based grouting material used for strengthening repairing as well as a preparation method and application thereof. The cement-based grouting material comprises the following components in parts by weight: 300-500 parts of cement, 200-300 parts of admixtures, 300-400 parts of fillers, 3-6 parts of water-reducing components, 0.1-1 part of plastic swelling component, 10-20 parts of hardened swelling components, 0.01-0.2 part of stable component, 1-4 parts of early strength components, 0.2-2 parts of defoaming components and 0.01-0.2 parts of emulsifying component. The cement-based grouting material disclosed by the invention has performance advantages such as higher injection-molding performance, initial fluidity not greater than 17s, impermeability not exceeding 1mm, wear resistance not exceeding 10cm<3>/cm<2>, compressive strength within 2 hours not lower than 5MPa, compressive strength within 1 day not lower than 30 MPa, and the like. The cement-based grouting material has composite swelling, the free swelling ratio within 3 hours is 0.02%-2% and grouting is full and dense; the viscosity is low, the volume stability is good and durability is good; the cement-based grouting material does not contain VOC (volatile organic compounds), and is environment-friendly.

Disclosed is an inorganic medicine, particularly modified montmorillonite, method for preparing the same and use thereof. The said modified montmorillonite means that dioctahedron of natural montmorillonite is not destroyed and basic chemical composition for the same is not changed, and the microstructure stacked from dioctahedron layer is changed to decrease the thickness of stacking layer and to expose and increase the end face charge and the interlayer charge of montmorillonite, thereby resulting in its lower degree of C axis order. The present medical use of montmorillonite is thus significantly strengthened, particularly the reversal treatment effect on chronic atrophic gastritis. Also disclosed are a medicine composition containing modified montmorillonite and the reversal treatment effect of natural montmorillonite on chronic atrophic gastritis.

Compositions and methods for improving the performance of invert drilling fluids are provided. In particular, waxes are used in drilling fluid compositions to improve the performance of organophilic clays within a drilling solution as well as to improve seepage control.

The invention provides an acrylate grouting liquid composed of a liquid A and a liquid B, which both contain acrylate as main ingredient. The formulation and weight proportions of the liquids A and B are as follows: liquid A: acrylate aqueous solution 40-50 parts, acrylic ester cross-linking agent 5-7 parts, accelerator 0.5-5 parts, alkali metal hydroxide additive 0.4-0.5 parts, and water 1.5-3 parts; liquid B: initiator 0.3-0.6 parts, alkali metal hydroxide additive 1-1.5 parts and water 40-50 parts. The liquids A and B are prepared before use, and mixed in the field at equal volume under room temperature to form a gel. In the invention, the acrylic ester is used as cross-linking agent so that the grouting liquid is free of amido groups and doesn't cause environmental pollution; and the alkali metal hydroxide is added so that the grouting liquid exhibits certain expandability in water and exhibits good anti-seepage effect.

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 foaming agent used in ultra-low density anti-seepage foamed concrete, and a preparation method thereof. The foaming agent comprises components of, by mass: 8 to 18 parts of sodium polyoxyethylene fatty alcohol sulfate, 0.1 to 7 parts of sodium dodecylsulfate, 0.5 to 7 parts of sodium dodecylbenzene sulfonate, 4 to 15 parts of pure acrylic emulsion or styrene-acrylate emulsion, 3 to 6 parts of fatty alcohol polyoxyethylene ether, 0.5 to 2 parts of hydroxyethyl cellulose or hydroxy propyl methylcellulose, 0.1 to 5 parts of modified silicon resin or modified nano-gradebentonite, 0.1 to 0.5 parts of a thickener, and balance of water. The anti-seepage foamed concrete foaming agent provided by the invention has stable property, high foaming multiple, and good workability with a substrate. The agent can be used in a foamed concrete product with a density of 100 to 600kg/m<3>. The raw materials are easy to obtain, and the cost is low. The foaming agent can be stored for a long term with out deteriorating. With the agent, foamed concrete properties such as strength and softening coefficient can be improved.

The invention relates to a washable ecologic wall material capable of decomposing formaldehyde. The invention not only can be used for decomposing and absorbing the formaldehyde, improving indoor moisture and absorbing indoor water content, but also is very convenient to wash and brings great convenience for people to clean the wall. The washable ecologic wall material capable of decomposing the formaldehyde is characterized by being prepared from the following components in percentage by weight: 18-29 percent of diatomite, 25-30 percent of quartz sand, 0.1 percent of fiber, 15-18 percent of bentonite, 1-3 percent of adhesive, 12-17 percent of ash calcium, 13-18 percent of water retention agent, 5-8 percent of formaldehyde purifier, 3-6.1 percent of titanium dioxide and 3-7 percent of anion powder. The invention further improves a traditional original wall material to satisfy the market needs and bring convenience and benefits to the life of people.

The invention provides a flexible fireproof cable. The flexible fireproof cable comprises cable cores, a thermal-collapse-resistant filling layer, a waterproof layer, an outer blocking layer and a sheath layer, wherein each cable core comprises a conductor, an inner blocking layer and an insulating layer from interior to exterior, at least one cable core is wrapped with the waterproof layer, the filling layer is arranged between the waterproof layer and the cable cores, the filling layer is formed by weaving ceramic silicon sealing strips and glass fiber in a winding mode, and the waterproof layer is wrapped with the outer blocking layer and the sheath layer in sequence. According to the flexible fireproof cable, on the premise that a high fireproof level is achieved, traditional technologies such as the wrapping technology and the cabling technology are adopted for all the important structures such as the inner blocking layers, the outer blocking layer and the thermal-collapse-resistant filling layer, and the problems that an existing fireproof cable is high in price, complicated in technology, large in manufacturing difficulty because special devices are needed, not convenient to construct because a metal sheath is hard and low in fireproof performance are effectively solved.

The present invention discloses an anti-seepage sealing structure of the deep foundation of the earth-rockfill dam of a water conservancy and hydropower project, which can effectively prevent the seepage of the dam. The anti-seepage sealing structure of the deep foundation of the earth-rockfill dam of the water conservancy and hydropower project includes the anti-seepage layer of the dam body which is stretched from the top of the dam body to the bottom of the dam body, and the anti-seepage layer of a dam base, which is jointed with the anti-seepage layer of the dam body, is arranged in the dam base of the bottom of the dam body. By arranging the anti-seepage layer of the dam base in the dam base, the anti-seepage sealing structure can effectively prevent water seepage in the dam, thus increasing the anti-seepage property and durability of the whole dam and the foundation. Moreover, according to the different distributions of permeable layers from strong to weak in the dam base, the anti-seepage layers are arranged accordingly, thus improving the rationality of the anti-seepage structure, and particularly, the present invention is suitably applied on water conservancy and hydropower dams.

The invention relates to a grouting material for an impervious curtain of a refuse landfill and a preparation method of the grouting material. The grouting material comprises the following components in percentage by mass: 40 to 50 percent of MSWI (Municipal Solid Waste Incineration) fly ash, 0.5 to 1 percent of organic sulfur, 3 to 6 percent of cement, 45 to 55 percent of water, and 1.5 to 2 percent of calcium hydroxide. The method for preparing the grouting material comprises the following steps of: (1) weighing raw materials; (2) mixing the MSWI fly ash, the water and the organic sulfur, and uniformly stirring for 5 to 10 minutes; and (3) interfusing the cement and the calcium hydroxide, and uniformly stirring for 3 to 5 minutes. According to the grouting material, the problems of material selection difficulty, high cost, poor fluidity, low stability and poor impermeability of a conventional grouting material can be solved. The preparation method has the advantages of short processroute, simple operation, time saving and the like.

The invention relates to an antibacterial and bacteria-isolation SMMS composite non-woven fabric. The SMMS composite nonwoven fabric is formed by compounding a first spunbond non-woven fabric layer, afirst meltblown layer, a second meltblown layer, and a second spunbond non-woven fabric layer, wherein the first spunbond non-woven fabric layer and the second spunbond non-woven fabric layer are respectively an upper surface layer and a lower surface layer, the first meltblown layer and the second meltblown layer are intermediate layers, the spunbond non-woven fabric layers and the meltblown layers are all obtained by using polypropylene as a raw material and adding an antibacterial agent for processing, and the antibacterial agent is a chemical and biological compound antibacterial agent ofpolyhexamethyleneguanidine and gamma-polyglutamic acid. The SMMS composite non-woven fabric has the antibacterial and bacteria-isolation functions, the use of the spunbond non-woven fabric layers asthe upper and lower surfaces can ensure that the non-woven fabric has certain strength, good tear resistance, and good wear resistance, the intermediate layers adopt double-layer meltblown, permeability resistance is ensured while the air-permeability and bacteria-isolation performance are good, the resistance to bacteria is not produced, and the use is safe and reliable.

A pressure grouting non-fines concrete pile belongs to the construction engineering field, and is particularly applicable to strengthening river levees and reinforcing road-widening lap joints. The pressure grouting non-fines concrete pile comprises a borehole (1), a grouting pipe (2), a sleeve valve pipe (3), graded gravels or crushed stones (4) and a grouting body (5), wherein, the sleeve valve pipe (3) is composed of a sleeve valve pipe grout stop piston (6), a sleeve valve pipe grout injecting hole (7), a sleeve valve pipe screen tube (8) and a rubber bush (9). During the implementation process, a boring machine is firstly utilized to form the borehole (1) until the design depth of the non-fines concrete pile is reached, the grouting pipe (2) and the sleeve valve pipe (3) with the length of the both equal to the depth of the borehole (1) are inserted, then the graded gravels or the crushed stones (4) are filled in, and finally the grouting pipe (2) is utilized to carry out first grouting, the amount of which is equal to the grout output of the borehole (1); after the grout is initially condensed, the sleeve valve pipe (3) is utilized for carrying out secondary middle-high pressure grouting, the pressure of which is 1 to 5 MPa, and the grouting flow rate is 10 to 60 L/min. The pressure grouting non-fines concrete pile has the advantages that the design is reasonable, the construction is simple, the bearing capacity is high, and the anti-seepage capacity of the reinforced section is improved.

The invention discloses an underground reservoir artificial dam body and coal pillar dam body connecting structure and further discloses a construction technology of the underground reservoir artificial dam body and coal pillar dam body connecting structure. The underground reservoir artificial dam body and coal pillar dam body connecting structure comprises an artificial dam body and a coal pillar dam body. A dam body groove is formed in the coal pillar dam body and provided with a groove oblique surface, and an acute angle is formed between the extending directions of the groove oblique surface and the artificial dam body. Anchor rod drill holes are formed in the groove oblique surface, and the extending directions of the anchor rod drill holes are perpendicular to the extending direction of the groove oblique surface. An inverted-hook-type grouted anchor rod is fastened in each anchor rod drill hole, and a plurality of reinforcement framework beams are arranged in the artificial dambody. The two ends of each reinforcement framework beam are in fastening connection with the ends of the inverted-hook-type grouted anchor rods on the two sides of the reinforcement framework beam correspondingly. According to the underground reservoir artificial dam body and coal pillar dam body connecting structure and the construction technology thereof, the connecting strength and stability are improved, and the construction technology is further simplified.

The invention provides an impermeable drainage system for a cement-sand-gravel dam. The impermeable drainage system is provided with an upstream impermeable layer and a drainage layer, wherein the upstream impermeable layer is arranged on the upstream of the cement-sand-gravel dam and covers the whole upstream dam face in a laminating manner, the upstream impermeable layer is cut into a pluralityof blocks by transverse seams in the axis direction of the dam, water-stop structures are arranged at the transverse seam positions, at least one part of each water-stop structure is arranged on the surface of the upstream impermeable layer, the upstream impermeable layer is made of slurry-adding vibrating cement sand gravels or slurry enriching cement sand gravels, the drainage layer is arrangedon the downstream side of the upstream impermeable layer of the cement-sand-gravel dam and is adjacent to the upstream impermeable layer, and drainage pipes are arranged on the downstream side of thedrainage layer in the axis direction of the dam and drain leakage water penetrating the upstream impermeable layer. According to the impermeable drainage system, the cement-sand-gravel dam is more economical and environmentally friendly, and meets higher engineering design requirements for compressive strength larger than 20 MPa, anti-freeze strength meeting F300 and impervious strength larger than W10, construction is convenient and fast, the dam body impermeable effect and the dam inner drainage effect can be improved effectively, and the design method of the cement-sand-gravel dam is perfected.

The invention provides an edible fungus chaff aerated brick. The aerated brick is prepared from the raw materials comprising, by weight, 30-35 parts of edible fungus chaff, 24-28 parts of fly ash, 15-20 parts of cement, 12-16 parts of lime, 3-5 parts of bamboo charcoal powder, 3-5 parts of oil foot, 12-18 parts of gypsum, 1-2 parts of aluminium powder, 1-2 parts of nekal, 16-19 parts of bentonite, 3-4 parts of lignocellulose, 2-3 parts of chitosan, 3-5 parts of sodium metasilicate, 8-10 parts of argil, 2-3 parts of rapeseed meal, 1-2 parts of ammonium persulfate and moderate water. The method employs the rapeseed meal as a raw material and the hydrophobicity of the brick is raised and the seepage-proofing effect is improved. Edible fungus chaff is employed as a raw material and waste materials can be utilized.

The invention relates to a method for improving a single-layer oil tank into a double-layer oil tank. On the basis that the inner wall of the buried single-layer steel oil tank in service is derusted, an anti-corrosion reinforcing coating, a 3D through gap layer and a glass steel inner tank are sequentially manufactured, and the single-layer oil tank is quickly improved into the glass steel double-layer oil tank with a through gap layer space. The 3D through gap layer is communicated with a tank top monitoring well, and sealing performance of the inner tank and the steel outer tank in service can be monitored all day long. The inner surface of the glass steel inner tank is coated with an anti-static layer which makes direct contact with stored liquid, the anti-static layer is connected with an original steel storage tank, and the original steel single-layer storage tank is grounded so that electrostatic hazards can be avoided. The inner tank is made from a glass steel material formed by mixing resin and glass fiber. The oil tank improvement method has the advantages of being good in safety, high in strength, convenient to manufacture and the like, corrosion resistance of the oil tank is improved, the overhaul frequency is reduced, the service life is prolonged, and improvement cost is reduced.

The invention discloses an anti-floating system combining an anti-floating cement soil pile and an anti-floating anchor rod and a construction process of the anti-floating system. The anti-floating system comprises the anti-floating cement soil pile and the anti-floating anchor rod fixedly embedded in the anti-floating cement soil pile, and the top of the anti-floating cement soil pile is connected with the lower surface of a basement bottom plate in a contact mode. The anti-floating anchor rod comprises an anchor cable, an anchor head and an anchor device, wherein the anchor head is arranged in the anti-floating cement soil pile, the anchor cable penetrates through the anti-floating cement soil pile and extends into an anchoring hole in the basement bottom plate, the anchor cable is tensioned, and the anchor device is fixed through grouting. The anti-floating system gives full play to the advantages of the anti-floating cement soil pile and the advantages of the anti-floating anchor rod, a pile and an anchor are integrated and work together, and the anti-floating system is suitable for anti-floating anchor rod construction of various soft soil layers, improves anti-pull force of the anchor rod, prevents hole wall collapse, improves the impervious performance of a connecting node of the basement bottom plate and the anchor rod, expands the use range of the soft soil layers of the anti-floating anchor rod in high-water-level environment, enables construction to be convenient to achieve and can be widely used for anti-floating processing of various underground structures.

The invention discloses a GCL vertical anti-seepage wall and a preparation method thereof. The GCL vertical anti-seepage wall comprises a vertical anti-seepage wall body, wherein a sodium-based geosynthetic clay liner is fixed at the outer side of the vertical anti-seepage wall body, and the sodium-based geosynthetic clay liner comprises a vertical anti-seepage structure and a top fixation structure. The anti-seepage wall disclosed by the invention has a low permeability coefficient, and is good in bonding with a soil mass, and high in anti-seepage effect.

The invention discloses a construction method of a bridge pile foundation in a mountainous area. The construction method comprises the following steps: (1) staking out in survey, namely locating position of the pile foundation; (2) digging a hole, namely enlarging hole on the bottom rock of a pile hole after digging the pile hole to form an enlarge hole cavity; (3) placing a steel reinforcement cage and an enlarged steel reinforcement cage, namely placing a main steel reinforcement cage in the pile hole and placing the enlarged steel reinforcement cage in the enlarged hole cavity; (4) pouring concrete, namely pouring concrete into the pile hole by adopting a guide pipe method and manufacturing a bearing platform; and (5) arranging anchor cables, namely drilling around the pile foundation, mounting a vertical anchor cable and a horizontal anchor cable, grouting by adopting a hole bottom grout returning method, and punching the vertical anchor cable and the horizontal anchor cable into the rock by passing through the soil layer. The construction method is simple; the pile foundation bearing capability is strong.

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.