OmahaAdvance support of small conduitIt has laid a foundation for the development of heavy industry enterprises

OmahaTunnel leading small conduit and pipe shed, such as long setting time, difficult control and low stone rate, improves the effect of cement grouting and expands the scope of application of cement grouting [1].

Omaha.When the pipe cannot be connected due to serious blockage,OmahaSmall conduit manufacturer,OmahaSupport advance small conduit, core drilling detection must be carried out; when it is not the first pile of a certain bridge, the construction unit shall apply for changing the detection method The low strain reflection wave method or high strain strain strain measurement method shall be used and signed by the supervisor's representative and the person in charge of quality supervision before implementation; In case of pipe blockage of a bridge for many times, core drilling inspection shall be carried out in due time. Other uses of grouting pipe introduction the grouting pipe of pile foundation refers to the steel pipe that needs to be embedded when testing the quality of pile foundation. Generally, it is bound in the reinforcement cage and lowered into the hole together with the reinforcement cage before pouring concrete! There are many reasons for the grouting pipe to gamble on the pipe, and also due to the pipe mouth not being closed well and falling debris, the pipe is blocked! To put it bluntly, the pipe is blocked by sundries! The role of the grouting pipe is to inject clean water into the grouting pipe and put the transducer into the grouting pipe for testing when the integrity of the pile foundation is tested by ultrasonic wave. If the grouting pipe is blocked, the transducer can not be put in, or can not be placed at the bottom of the pile, so it is impossible to comprehensively test the whole pile and judge the quality of the pile foundation!

Push the rock powder and sundries that have not been washed, remain at the bottom of the hole, 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.

.The single liquid silicification method is applicable to reinforce collapsible loess with permeability coefficient of 0.1 ~ 0m/d and silty fine sand with permeability coefficient of 0.3 ~ 0m/d.

The grouting pipe is a thermoplastic material, which can be processed and formed many times, which provides convenience for the hot-melt and electric fusion connection of the pipe.

The grouting pipe is a thermoplastic material, which can be processed and formed many times, which provides convenience for the hot-melt and electric fusion connection of the pipe.

During high-pressure grouting the water stop needle is used from top to bottom along the crack at an angle of 45 degrees, about 5cm to the left and right. The straight-line distance between the two water stop needles is about 20cm. If the crack is too large, it can be directly drilled vertically to the crack.

When the grouting pipe is installed, the axis deviation shall be ≤ 5cm and the bearing capacity of the support joint shall meet the design requirements. When connecting the grouting pipes, bolts must be installed symmetrically and tightened in sequence. Meanwhile, in order to prevent excessive deflection of the grouting pipes when axial force is applied, the deflection must be corrected to the horizontal before axial force is applied.

Cement water glass slurry overcomes the shortcomings of single liquid cement slurry, such as long setting time, difficult control and low stone rate, improves the effect of cement grouting and expands the scope of application of cement grouting [1].

Quality improvement. When the daily average temperature is lower than 5 ℃, no watering and thermal insulation measures shall be taken. Steam curing can be used when the temperature cannot reach the natural curing conditions or early demoulding is required. Generally, steam curing should be carried out at a temperature of about 65 degrees. Canvas and tarpaulin should be used for curing. In order to avoid crack deformation of concrete components caused by sudden rise and fall of steam temperature, the speed of temperature rise and drop must be strictly controlled.

Classified according to the movement mode of grout in the stratum Filling grouting: filling large cracks and caves with grout is called filling grouting.

Introduction to the advantages of grouting pipe: Simple installation, complete supply; The grouting pipe can be cut at the construction site according to the actual required length of the joint (it is recommended that the longer grouting outlet length should not exceed 6m); No special installation equipment is required; Grouting time can be arbitrarily selected; When grouting is carried out internally under proper pressure, the grouting pipe fluid can keep filling the whole pipe evenly; The system allows grouting under relatively low pressure; The grouting pressure is 0.2-0.4mpa; 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 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.

Customer first.2 specification: inner diameter of disposable grouting pipe: 8mm; Outer diameter: 12mm; Inner diameter tolerance: ± 0.3mm; Length of each roll: 120m. Inner diameter of repetitive grouting pipe: 8mm; Outer diameter: 20mm Inner diameter tolerance: ± 0.3mm; Length of each roll: 90m.

The grouting pipe diffuses the load on it. When the reinforced soil is loaded, the grouting pipe has a high bond with the soil, and has a mutual embedding effect with the soil, showing better tensile performance. The tensile stress of the soil is transmitted to the grouting pipe, making the reinforced soil a tensile member, which can change the stress from the vertical direction to the horizontal direction, spread the load stress evenly to a large base range, enhance the overall tensile strength of the soil, and effectively improve the stress distribution of the pavement structure. The strength of high tensile reinforced soil is far higher than that of unreinforced soil, greatly improving the bearing capacity of the soil.

The grouting pipe of the spring reinforcement framework shall be bound with the bamboo frame of the reinforcement framework according to the construction rigidity of the component. After being bound into a bundle, it shall be stacked at the specified position and lifted to the abutment cross. During the reinforcement binding process, and the finished product shall be well protected. The injection pipe shall be placed on the top, and the embedded grouting symbol shall be buried on the formwork for positioning. The inverted formwork shall be used to install stairs and component side formworks to increase the turnover rate of the formwork as much as possible. According to the design size, the formwork shall be equipped with plate cutting machine and edge folding machine Cutting shall be carried out by profile training machine, rebar concealment and cross slab shall be carried out according to blanking standards. Unqualified ones shall be rectified until they meet construction technology. Concrete pouring Before concrete mixing, the water content of sand and stone shall be measured and the construction mix proportion shall be adjusted according to the test results.

Omaha.Reusable grouting pipe product specification: inner diameter: 8mm; Outer diameter: 20mm; Inner diameter tolerance: ± 0.3mm; Length of each roll: 90m.

How to connect the grouting water stop needle and the grouting pipe after the grouting water stop needle and the grouting pipe are connected, a set of grouting system will be formed. As long as the small part of the grouting needle is inserted into the joint of the lotus petal grouting pipe, a closed and self-locking grouting system will be formed.

Classified according to the movement mode of grout in the stratum Filling grouting: filling large cracks and caves with grout is called filling grouting.