Catago50lacrim
SoletracySuppocurtain grouting of dam foundation
Polymer chemical grouting method is applicable to reinforcement of sandy soil foundation, water stop and leakage stoppage of underground engineering, reinforcement of muddy interlayer of dam foundation and fault fracture zone. There are many varieties of polymer chemical pulp materials, including epoxy resin, acrylamide (propionate), lignin, etc. Acrylamide and polyurethane are commonly used in chemical grouting of foundation. Acrylamide pulp is composed of main agent acrylamide and various admixtures. The viscosity of the slurry is close to water, and it has good groutability. After the slurry solidifies, the gel is impermeable, and has good durability and stability. This kind of slurry is widely used in seepage prevention grouting of fine rock cracks and medium fine sand layers and dynamic water leakage stoppage projects. This kind of pulp has certain toxicity and pollutes air and groundwater. The polyurethane slurry is mainly composed of polyisocyanate and polyether resin, and then mixed with various admixtures. After the slurry is poured into the formation, it reacts with water to form polyurethane foam, which can strengthen the foundation and prevent seepage and leakage. Polyurethane slurry can be divided into water-soluble and non-water-soluble. The water-soluble polyurethane can be miscible with water and react with water to form an aqueous gel; Water insoluble polyurethane can only be miscible with organic solvents. Polyurethane slurry has low viscosity, good groutability, high stone strength, safety and reliability, no pollution to the environment simple operation and high economic benefits.
The fast cutting device in the hole of the underground grouting pipe according to claim 2, wherein the cutting rotating device rotates the cutting blade and pulley through a socket wrench to cut the casing wall, and the cutting rotating device is a wrench or a tooth wrench.
West Area. Action mechanism of grouting pipe: the grouting pipe is a flexible material. Under the action of soil load, it is a mechanism of dispersing the force on each hole belt and forming a resultant force.
The repetitive grouting pipe can be reused for many times, and the core and outer wall of the pipe need to be cleaned after each use. Advantages of grouting pipe grouting pipe is an embedded grouting pipe system, which is used for permanent sealing of construction joints, cold joints, pipe seepage joints,West AreaPile bottom grouting pipe, and gaps between ground walls in concrete. It is very suitable to install grouting pipes between the joints of new and old concrete. When water penetrates into the joint,West Area25hollow grouting anchor bolt manufacturer, which can ensure that it will not be crushed under the concrete pressure. The non-woven filter cloth layer outside the framework only allows water and grouting fluid to pass through the cutting rotating device rotates the cutting blade and pulley through a socket wrench to cut the casing wall.
The inner core of the grouting pipe is rigid, and other materials such as cement slurry in concrete are blocked outside the grouting pipe to fully ensure the smooth use of the whole section of the grouting pipe. The flexibility of the product is very high, and it is easy to place at the corners without cutting and connecting. When grouting in the grouting pipe under pressure, the grouting can keep filling the whole pipe evenly. The system allows grouting at relatively low pressure. The installation of grouting pipes will not affect the characteristics of the building itself. The installation or grouting process will not harm the concrete. Permanent sealing can be ensured after grouting. If there is no leakage, grouting can be omitted. The key construction process flow of grouting pipe installation is as follows: table formwork processing, installation - grouting pipe processing - spring reinforcement framework, mesh binding - grouting pipe and installation of embedded reserved side formwork installation - process acceptance - concrete pouring - concrete curing - 10000 m3 data thickness to ensure the integrity of the table formwork, the steel plate joint weld shall be uniform.
Low cost, fast time, no loss, free from climate and place constraints.
[patent attachment] [description] [0010] 1 is the structural diagram of the utility model; [0011] 2 is a schematic diagram of the cutting blade; [0012] 3 is the schematic diagram of tightening the blade nut; [0013] 4 is a schematic diagram of the fixed cutting device.
Honesty and mutual benefit.The double liquid silicification method is suitable for strengthening sandy soil with permeability coefficient of 0 ~ 0m/d or for seepage prevention and water stop. A sodium silicate solution having a density of 35 to 44 and a calcium chloride solution having a density of 26 to 28 are used. After the two solutions are contacted with the soil, a gel chemical reaction is generated to generate silica gel and calcium hydroxide. The ultimate compressive strength of the reinforced soil can reach 5 ~ 0MPa.
Development trend editor since the advent of Portland cement in 1824, cement grouting has been the main grouting method in engineering. However, ordinary cement can only be filled with sand gravel or pores with a diameter greater than 0.2 ~ 0.3mm due to its coarse particles. Therefore, improving the fineness of cement particles has become the main way to improve the groutability of cement slurry. Some countries have developed a kind of ultra-fine cement, which can pour fine sand with permeability coefficient of 10-3 ~ 10-4cm / s and micro cracks in rocks. It is a promising granular grouting material. Propionate is a kind of water-soluble polymer chemical slurry, whose viscosity is close to that of water. It is widely used in anti-seepage grouting and dynamic water plugging of fine rock cracks and medium fine sand layers. However,West AreaTunnel leading small conduit and pipe shed, this kind of pulp material is toxic and pollutes the air and groundwater, so most of them have stopped production and use. In 1980, AC400 slurry was developed in the United States, and in 1982, ac-ms slurry was developed in China. The toxicity of this kind of slurry is very small (only 1% of the toxicity of propionate). It is an ideal anti-seepage slurry. The non alkaline silicate slurry developed in Japan has no alkaline pollution to groundwater, low viscosity, high gel strength, good durability and does not change the pH value of groundwater. [2] Grouting method is divided into ceramic process grouting and construction engineering grouting. Ceramic process grouting is the process of using the prepared mud injection in ceramic production. Construction engineering is to use appropriate methods to inject some curable grout into the cracks or pores of the rock and soil foundation, and to improve its physical and mechanical properties through replacement, filling, extrusion and other methods to make ceramic bodies suitable for processing.Make it into a certain shape, size and specification. Seepage prevention Water plugging 3
When the a diameter of grouting connecting reinforcement is less than or equal to 16, the a diameter of connecting reinforcement is greater than
The grouting water ratio of grouting construction is 0.6:1 ~ 0.5:1 (i.e. the weight ratio of water and cement), and the principle of &dilute first and then dense& is adopted. Po45r early strength Portland cement is used as the cement. Before mixing the cement slurry, the quality of the cement shall be checked. If it is found that the cement is hardened and deteriorated or fails the test, it shall be discarded to prevent the quality of pile end grouting from being affected by the deteriorated cement. The grouting time should be 5-7 days and 15-18 days after the completion of single bearing platform pile construction.
details. The fast cutting device in the hole of the underground grouting pipe according to claim 2, wherein the cutting rotating device rotates the cutting blade and pulley through a socket wrench to cut the casing wall, and the cutting rotating device is a wrench or a tooth wrench.
Glass fiber grouting pipe is a semi-rigid product made of glass fiber as raw material, high-strength alkali free glass fiber through a certain warp knitting process, and fiber filament coated on both sides.
● features: the grouting pipe is divided into disposable grouting pipe (ccll-y grouting pipe, qdm-it grouting pipe, ccll-y full section grouting pipe) and repetitive grouting pipe (ccll-d grouting pipe, ccll-d full section grouting pipe)
West Area.The double liquid silicification method is suitable for strengthening sandy soil with permeability coefficient of 0 ~ 0m/d or for seepage prevention and water stop. A sodium silicate solution having a density of 35 to 44 and a calcium chloride solution having a density of 26 to 28 are used. After the two solutions are contacted with the soil, a gel chemical reaction is generated to generate silica gel and calcium hydroxide. The ultimate compressive strength of the reinforced soil can reach 5 ~ 0MPa.
● specification: inner diameter of disposable grouting pipe: 8mm; Outer diameter: 12mm; Inner diameter tolerance: ± 0.3mm; Length of each roll: 120m.
Development trend editor since the advent of Portland cement in 1824, cement grouting has been the main grouting method in engineering. However, ordinary cement can only be filled with sand gravel or pores with a diameter greater than 0.2 ~ 0.3mm due to its coarse particles. Therefore, improving the fineness of cement particles has become the main way to improve the groutability of cement slurry. Some countries have developed a kind of ultra-fine cement, which can pour fine sand with permeability coefficient of 10-3 ~ 10-4cm / s and micro cracks in rocks. It is a promising granular grouting material. Propionate is a kind of water-soluble polymer chemical slurry, whose viscosity is close to that of water. It is widely used in anti-seepage grouting and dynamic water plugging of fine rock cracks and medium fine sand layers. However, this kind of pulp material is toxic and pollutes the air and groundwater, so most of them have stopped production and use. In 1980, AC400 slurry was developed in the United States, and in 1982, low viscosity high gel strength, and to improve its physical and mechanical properties through replacement filling, size and specification. Seepage prevention Water plugging 3