San JoseAdvanc
Catago50lacrimThe proper grouting time can be selected after the concrete curing. Leakage joints can also be permanently sealed in this way.
[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.
San Jose. Grouting pipe at tensioning end: the grouting pipe installed at the end of the grouting pipe reinforcement and capable of tensioning is also called grouting pipe grouting pipe. The so-called grouting pipe is a grouting pipe in post tensioning structure or component to maintain the tension of the grouting pipe reinforcement and transmit it to the mixed tension; Fixed end grouting pipe: a grouting pipe installed at the end of the grouting pipe reinforcement and usually buried in the concrete without tensioning. The standard of the grouting pipe used for the grouting pipe reinforcement is the national standard of the people's Republic of China (GB / T 14370-200, which ensures that the products manufactured by our company conform to the product quality law of the people's Republic of China and the standard law of the people's Republic of China Grouting pipe is the only acoustic pipe specially used for ultrasonic testing in the market. The grouting pipe is made of cold and hard steel pipe after professional molding, and is connected by clamp pressure connection, screw connection, flange connection and other methods. It has a reliable anti-seepage effect during concrete pouring. Two convex grooves are planned at the end of the bell end of the high-strength double seal clamp type acoustic measuring pipe, and the convex grooves are equipped with sealing rings. When installing the device, the socket end of the product is stabbed into the bell end by 10cm, and then the two convex grooves are kneaded together with special hydraulic pliers. The pipe at the kneaded part is shortened and deformed after being stressed,San JoseDouble layer small conduit advance support, and the outer pipe between the two convex grooves is deeply immersed into the inner pipe, and then the reliable connection of the product is completed; After being kneaded, playing an excellent double safety sealing effect.
● 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)
. 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.
According to the sequence of sectional construction along the stratum depth, grouting can be divided into sectional downward, sectional upward and one-time full depth grouting. The segmented downward type starts from the ground, drills a section of holes from top to bottom, and injects a section of grout. After each section of grouting, the drilling and grouting continue to be continued downward, so as to alternately reach the designed final grouting depth, and then carries out re grouting from bottom to top; The segmented upward type is that the grouting hole is drilled to the final grouting depth at one time, and the grouting is segmented from bottom to top using a grout stopper; The method of one-time full depth grouting is to drill the grouting hole to the final grouting depth at one time and then conduct one-time grouting to the full depth.
The installation will not affect the characteristics of the building grouting pipe; The installation or grouting process will not harm the concrete; Permanent sealing can be ensured after grouting; If there is no leakage, grouting is not allowed. 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.
The concrete shall be evenly distributed, and the vibration shall be &fast inserting and slow pulling& and slightly pumping up and down to make the concrete vibrate evenly. The vibration shall be carried out in sequence to avoid over vibration and missing vibration until the concrete surface is horizontal, no significant subsidence, no bubbles and no mortar on the surface. During vibration, the vibrating handle shall not touch the side formwork, grouting pipe, embedded parts, etc.
Low cost, fast time, no loss, free from climate and place constraints.
Grouting pipe is a tubular waterproof sealing material used for grouting of concrete construction joints.
technological innovation.This seems to test what I learned in junior high school. The formula for calculating the weight per linear meter of a cylinder I learned at that time is now used. However, it may be more troublesome to calculate according to that formula. It is necessary to calculate the weight per linear meter of the outer cylinder with the formula, and then subtract the weight per linear meter of the inner space. I have a headache when I think about it! With less gossip, I'd better provide you with a method to correctly calculate the weight of the grouting pipe per linear meter!
The system allows grouting at relatively low pressure.
Calculation formula of weight per linear meter of pile foundation grouting pipe (unit: kg / M)
The disposable grouting pipe uses steel springs as the supporting framework, and is wrapped with a layer of non-woven filter cloth. The outermost layer is wrapped with nylon mesh,San JoseSupport small conduit, and can only be grouted once.
retailer. Push the rock powder and sundries that have not been washed, or stick to the hole wall beyond the grouting range, so as to improve the bonding strength and impermeability of the slurry stone body and the fissure surface.
Appropriate measures shall be taken to prevent surface water curing water and garbage from falling in. When necessary, a sump shall be set a sump shall be set near the post cast strip of the base plate in combination with the design of the basement plane drainage system to facilitate the final cleaning before the grouting pipe is cast. When advance water stop is not used which can be set in the basement according to the above method, or set outdoors as a temporary facility. Usually, we use the waterproof scheme between the grouting pipe and the water surface or before, and there are many methods for the grouting pipe to stop water in advance. It should be noted that the design unit should participate in the review of the construction organization design of the basement, so as to determine a complete implementation scheme of advanced water stop before the excavation of the foundation pit and the pouring of the cushion. Otherwise, the design modification requirements will be put forward only when problems are found in advance water stop during construction, which will affect the integrity and rationality of the whole water stop scheme.
The setting and curing reaction of cement water glass slurry includes cement hydration reaction and the reaction of Ca (OH) 2, the product of cement hydration reaction, with water glass, that is, after cement and water are mixed into cement slurry, Ca (OH) 2 with strong activity is produced due to hydrolysis and hydration; Water glass interacts with Ca (OH) 2 to form a gel with certain strength - calcium silicate hydrate. The reaction is as follows [2].
San Jose. The concrete shall be evenly distributed, and the vibration shall be &fast inserting and slow pulling& and slightly pumped up and down to make the concrete vibrate evenly. The vibration shall be carried out in sequence to avoid over vibration and missing vibration until the concrete surface is horizontal, no significant subsidence, no bubbles and no mortar on the surface. During vibration,San JoseAdvance small conduit and pipe shed, the vibrating handle shall not touch the side formwork, grouting pipe, pipeline, embedded parts, etc.
The installation will not affect the characteristics of the building grouting pipe itself; The installation or grouting process will not harm the concrete; Permanent sealing can be ensured after grouting; If there is no leakage, not reusable ccll-d series grouting pipe: multiple times of grouting, grouting is not limited by time.It is applicable to waterproof joints of subway, tunnel and basement. If there is water leakage, grout can be injected into the pipe body to fill and seal. It is very suitable to install grouting pipes between the joints of new and old concrete. Various materials such as cement slurry, polymer slurry and polyurethane chemical slurry can be injected. When water penetrates into the joint, the joint can be sealed by injecting slurry into the PVC port or spring skeleton port set on the surface. The proper grouting time can be selected after the concrete curing. Leakage joints can also be permanently sealed in this way.
Polymer chemical grouting method is applicable to reinforcement of sandy soil foundation, curtain grouting of dam 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), polyurethane (cyanogen), 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, high stone strength, safety and reliability, no pollution to the environment, simple operation and high economic benefits.