54results about How to "Strong anti-seepage" patented technology

The invention relates to a car frame connecting structure comprising a side window longitudinal beam, an upright column, a stiffening beam, a top cap longitudinal beam and a top cap horizontal beam, wherein the side window longitudinal beam is riveted with the upright column through a medium corner; the side window longitudinal beam is riveted with the lower part of the stiffening beam; the upright column is riveted with the stiffening beam; the upper part of the stiffening beam is riveted with the top cap horizontal beam through a large corner; and the top cap longitudinal beam is riveted with the top cap horizontal beam through the medium corner. The car frame connecting structure is made of aluminium alloys or magnesium alloys. The invention achieves the effect on reducing weight approximate to a half under the conditions of same or similar strength of steels by adopting the car frame connecting structure made of the aluminium alloys or the magnesium alloys, thereby greatly reducing the weight of a car body without reducing the strength; and in addition, the invention has the advantages of reduced manufacturing and operating cost, long service life and more energy saving and environmental protection, prevents the stress concentration caused by adopting a welding mode through riveting connection and has firm connection without generating cracks.

The invention relates to seepage-resistant cement prepared from raw materials of, by weight: 5-8% of fluorine-containing polyacrylate emulsion powder with fluorine content of 1-3%, 2-3% of rosin with a specification of 100-200 meshes, 3-5% of sodium silicate, 3-5% of calcium hydroxide, 1-2% of alum, 1-2% of sodium dodecyl sulfate, 10-15% of phosphoaluminate cement, and balance of Portland cement. The cement provided by the invention is advantaged in high seepage resistance and high binding strength. With the cement, seepage resistance of cement mortar can be substantially improved, and bending strength and compressive strength of the cement mortar are improved.

The invention discloses a melamine modified resin adhesive for flax chip shaving boards, and a preparation method thereof. The resin adhesive comprises, by weight, 1230-1600 parts of formaldehyde, 1050-1300 parts of melamine, 40-80 parts of diglycol, 30-80 parts of caprolactam and 700-1000 parts of water. Melamine is used to substitute urea in order to be used for synthesizing melamine-formaldehyde resin, so the colorless and semitransparent properties of resin are reserved, and the resin adhesive also has the advantages of suitable storage period, controllable cost, improved water and heat resistance, and solidification at normal temperature.

The invention relates to a connection structure of a vehicle frame. The connection structure of the vehicle frame is located below a vehicle window on the side of a vehicle body frame and above a side cabin door; lower side window longitudinal beams and upper side window longitudinal beams are connected among stand columns; short-waist stand columns are connected between the lower side window longitudinal beams and the upper side window longitudinal beams; the above members are connected through middle corners; inner skins are arranged on sides of the stand columns, the short-waist stand columns, the lower side window longitudinal beams and the upper side cabin door longitudinal beams; reinforcing beams are arranged on the other sides of the inner skins away from the members; and all the members are made of aluminum alloy or magnesium alloy and are connected through rivets. The invention ensures that the intensity of the connection structure of the vehicle frame is not lower than that of the traditional connection structure of the steel vehicle frame, lightens the weight of the vehicle frame and prolongs the service life of the vehicle frame.

The invention relates to a floating ball type one-way drainage valve which is capable of preventing stored water leakage and discharging ground water in time and is applicable to a slope or a retaining wall of hydraulic engineering. The floating ball type one-way drainage valve consists of an upper valve body, a lower valve body, a floating ball and a drainage pipe, wherein the upper valve body has a funnel shape, a smooth camber neck part, and a top part connected with the drainage pipe, the lower valve body has a cylindrical shape and a bottom part connected with the drainage pipe, the floating ball is a hollow ball and has a straight bar attached onto the surface, and the upper valve body and the lower valve body are connected with each other through screws. The floating ball moves up and down in the valve body, and the straight bar stirs the sludgy on the bottom part of the valve body to prevent blockage. The upper and lower valve bodies share the same diameter, the diameter of the drainage pipe is smaller than that of the floating ball, and the sum of the length of the diameter of the floating ball and the length of the straight bar is greater than the inside diameter of the valve body. When the impounded level is higher than the ground water level, the floating ball moves up to block the drainage hole. When the impounded level is lower than the ground water level, the floating ball moves down and the ground water enters the valve body and is discharged through the drainage pipe. The floating ball type one-way drainage valve facilitates the stability of the slope and the retaining wall, and has a simple structure, high rigidity, high sensitivity and reliability, and is resistant to sludge and rust, low in cost and high in durability.

The invention relates to the technical field of prefabricated concrete square culverts, in particular to anti-permeability and corrosion-resisting prefabricated concrete square culverts. The anti-permeability and corrosion-resisting prefabricated concrete square culverts are characterized in that a laying process of the square culverts comprises the following steps that (1) the prefabricated concrete square culverts are processed; (2) grooves are dug and a cushion layer is arranged; (3) a mortar layer is laid; (4) the square culverts are hoisted; (5) the adjacent square culverts are installed; (6) the adjacent square culverts are fixed; (7) cavities between the adjacent square culrverts are filled; and (8) the subsequent square culverts are sequentially installed and the mounting grooves of the square culverts are backfilled, so that the whole installation process is finished. The anti-permeability and corrosion-resisting prefabricated concrete square culverts have the advantages of being simple in process, simple in structure, high in anti-permeability capacity, high in corrosion resistance and the like.

The invention provides an outer wall clay sculpture construction method and mortar adopted in using method. The outer wall clay sculpture construction method comprises the steps of manufacturing mortar, positioning patterns, installing a skeleton, conducting painting with lime at a time, conducting painting again, forming a prototype, conducting polishing and fine trimming, coloring the patterns and the like. The mortar adopted by clay sculpture comprises grey factice, sand, cement, brown sugar and glutinous rice flour, wherein the weight ratio of the grey factice to the sand to the cement to the brown sugar to the glutinous rice flour is 40-60:40-60:6-15:0.8-1.2:0.8-1.2. The grey factice is a viscous layer which is formed on the surface of clean water into which shell powder with gravel filtered out is soaked for more than fifteen days. According to the construction method, a supporting piece and a connecting wire are matched to form the skeleton, so that the internal clay sculpture structural connectivity is effectively improved, and the phenomena of disengagement, color fading and the lie are not likely to be generated. The main raw material adopted by the mortar is the shell powder, the grey factice formed after the shell powder is soaked is high in adhesive property, hardness, impermeability and water resistance, and meanwhile the glutinous rice flour in the mortar can improve the impermeability and the water resistance of the mortar.

The invention discloses a construction device and a construction method of a lock catch type steel pipe pile cofferdam, The device is a cofferdam ( which is in an axial direction parallel mold ) whichis formed by connecting a plurality of locking notch steel pipe piles in parallel, C-shaped female locking notches and T-shaped profile steel are welded to the outer side walls of the two sides of the steel pipe piles along the axis directions of the steel pipe piles correspondingly. According to the device and the method, the structure construction speed is fast, the manufacturing and installingprocess are simple, large mechanical equipment is not needed, and floating facilities are not needed; a male and female joint is adopted by a steel pipe pile joint, so that the number of lock catchesis reduced, and the water leakage probability of the cofferdam is reduced; the water plugging effect can be achieved by simply adopting bentonite processing and the like in the lock catches, the recycling of the steel pipe piles can be ensured, steel is saved, and economy and affordability are achieved.

The invention belongs to the technical field of seepage-proofing reinforcement of water conservancy foundations, and particularly relates to a circulating pressure-maintaining multi-turn grouting method for dam seepage-proofing reinforcement. The method comprises the following steps that the position of a permeable layer needing to be disposed is determined; holes are distributed in the position,close to the upstream face, of the top of a dam, and then a grouting hole is drilled through a drilling machine; a grouting pipe is arranged in the grouting hole, a hole sealing pipe is shorter than the grouting pipe, and an isolation block is arranged below the hole sealing pipe; an expansion material is injected into the hole sealing grouting pipe for hole sealing and pressure maintaining; and acirculating pressure-maintaining multi-turn grouting method is used for grouting of permeable high polymers, and the grouting pressure is 0.5-2Mpa. According to the method, construction is convenientand fast, the construction period is short, disturbance to the dam is small, the seepage-proofing effect is good, durability is high, full permeation and diffusion of grout are facilitated, subjectivity and experience of the grouting process can be effectively reduced, and grouting construction can be guided.

The invention relates to the technical field of prefabricated concrete square culverts, in particular to anti-permeability and corrosion-resisting prefabricated concrete square culverts. The anti-permeability and corrosion-resisting prefabricated concrete square culverts are characterized in that a laying process of the square culverts comprises the following steps that (1) the prefabricated concrete square culverts are processed; (2) grooves are dug and a cushion layer is arranged; (3) a mortar layer is laid; (4) the square culverts are hoisted; (5) the adjacent square culverts are installed; (6) the adjacent square culverts are fixed; (7) cavities between the adjacent square culrverts are filled; and (8) the subsequent square culverts are sequentially installed and the mounting grooves of the square culverts are backfilled, so that the whole installation process is finished. The anti-permeability and corrosion-resisting prefabricated concrete square culverts have the advantages of being simple in process, simple in structure, high in anti-permeability capacity, high in corrosion resistance and the like.

The invention discloses sound-absorbing and sound-insulating mortar and a preparation method thereof. The technical scheme is that the sound-absorbing and sound-insulating mortar is prepared from the following raw materials in parts by weight: 60 parts of cement, 45 parts of quartz sand, 18-30 parts of sound-insulating filler, 21-32 parts of sound-absorbing filler and 9-21 parts of additive, The sound-insulating filler comprises cellulose, acrylate and epoxy resin. The weight ratio of the cellulose, the acrylate and the epoxy resin are as follows: 5 -9 parts of cellulose, 6 -10 parts of acrylate and 7 -11 parts of epoxy resin. The sound-absorbing filler comprises perlite, glass beads, polyphenyl particles, perlite, glass beads and polyphenyl particles. The weight ratio of the perlite, the glass beads and the polyphenyl particles are as follows: 6 -10 parts of perlite, 7 -10 parts of glass beads and 8 -12 parts of polyphenyl particles. The sound-absorbing and sound-insulating mortar and the preparation method thereof have the beneficial effects that the mortar can block a part of sound while greatly absorbing the sound, the sound-insulating effect of the mortar is improved, and the living environment of people is remarkably improved.

The invention discloses a hollow brick. The hollow brick comprises a hollow brick body, which is formed by burning and moulding sludge. The hollow holes in the hollow brick body are in a blind hole structure, the hollow holes on the two sides of the hollow brick body are asymmetrically distributed, and the depth of each hollow hole is 4 to 6 mm. The hollow brick body is in a cubic shape, the length of the hollow brick body is 90-250 mm, the width is 85-125 mm, and the height is 55-120 mm. The hollow brick body is formed by burning sludge and moreover is provided with asymmetrical blind holes on the two sides of the brick body, so the hollow brick is environment-friendly, the waste material namely sludge generated in the households and factories is fully utilized, and furthermore the hollow brick has the advantages of solid structure, strong water penetration resistant performance, and good soundproof and heat insulation effect.

The invention discloses a melamine modified resin adhesive for flax chip shaving boards, and a preparation method thereof. The resin adhesive comprises, by weight, 1230-1600 parts of formaldehyde, 1050-1300 parts of melamine, 40-80 parts of diglycol, 30-80 parts of caprolactam and 700-1000 parts of water. Melamine is used to substitute urea in order to be used for synthesizing melamine-formaldehyde resin, so the colorless and semitransparent properties of resin are reserved, and the resin adhesive also has the advantages of suitable storage period, controllable cost, improved water and heat resistance, and solidification at normal temperature.

The invention discloses a high fluidity, anti-seepage, and crack-resistant concrete material, which is prepared from the following raw materials: silicate cement, fly ash, medium sand, small stone, a polycarboxylate water reducer, an air entraining agent, a calcium sulfoaluminate expanding agent, and water. The concrete material has good fluidity, and can be used in a structure without vibration or under a condition of slight vibration, wherein in the structure, the density of steel bars is large, the space is narrow, and the shape of the structure is complicated, and the construction is convenient. The concrete material also has a strong anti-seepage performance, the cement base material and additives work together to effectively cut off the crack connection channels, and the compactness and anti-seepage performance of the overall structure are both enhanced. The cracking resistant performance is strong, during the hydration process, the micro expansion can effectively control the shrinkage of concrete volume, the cracking rate and degree in the early stage are largely reduced; moreover, the concrete material can be well bound with roller compacted concrete, the cement base material can penetrate into the gaps between layers of roller compacted concrete, and the local strength and binding performance of roller compacted concrete are improved therefore.

The invention discloses a regeneration brick capable of purifying water quality, which relates to the technical field of building material. The regeneration brick comprises the following raw materials by weight part: 60-80 parts of sugar refinery filter mud with water content being no higher than 30%, 5-10 parts of protein powder, 0.1-0.5 parts of sodium dodecyl benzene sulfonate, 2-10 parts of boric acid, 15-20 parts of polyacrylamide, 70-90 parts of building waste material and 50-70 parts of slag. The regeneration brick can solve the problem that the polluted water body is effectively purified through sludge resource and harmlessness processing in a lot of sugar refineries, and has obvious anti-compression, water-resistance, anticorrosion and antiseepage capabilities.

The invention belongs to the technical field of civil construction underground engineering, and provides a sinking wall construction method, which enables the wall to sink in a controlled manner, and is relatively economical and reasonable. Excavate the rock and soil layer by layer, use the jack on the supporting pile to support the wall at the bottom of the excavated groove so that the bottom of the wall is suspended, use the jack to lift the supporting pile to cooperate with the excavation; after layered excavation, use the jack to press the supporting pile Until its settlement is stable; the wall and the retaining structure are entrained with roller elastic support rods, which transmit the balanced rock-soil pressure and control the sinking frictional resistance; the wall sinks under the control of the jack for a section, and the ground is raised for a section. When this construction method is used for foundation pit support, after connecting the basement exterior wall and the steel support wall on the ground, they sink in place under control at the same time, and then carry out large-scale excavation, which can prevent accidents caused by insufficient support. The support system has strong adaptability to architectural schemes and geology. This construction method can also be used in the construction of slope retaining walls and underground anti-seepage walls.