Anhui Cement Pile Factory
Compared with other pile types, especially prestressed concrete pipe piles, hollow square piles have the following outstanding advantages: ① large surface area and square or polygonal angle, the angle of repose between the pile and the soil in the soil layer is much larger than the circular surface, which means that hollow square piles can obtain greater bearing capacity than pipe piles under the same geological conditions, saving a lot of foundation funds for the project; ② By comparison, the bearing capacity of 350 hollow square piles is equivalent to that of 500 outer diameter thick wall pipe piles, and the cost per KN bearing capacity is lower than that of prestressed concrete pipe piles, which means that designers can choose square piles under the same design bearing capacity, while the market price of 350 hollow square piles is less than that of 500 outer diameter thick wall pipe piles, which can save a lot of material costs;
Anhui Cement Pile Factory
The general defect is corrosion, which mainly includes pitting and erosion. These two corrosion modes are chronic and not easy to be found by testers. The other is stress corrosion cracking, which is caused by corrosion, tension and stress at the same time. Mechanical damage is also a defect of cement pipes, mainly including gouges and dents with gouges, which are usually caused by mechanical loss. External crack defects are plane defects of cement pipes, which are easy to be found. Peeling is a serious wear condition, and perforation will cause fracture or leakage. Therefore, cement pipes should be tested in time. Once defects are found, corresponding repair measures should be taken immediately to eliminate potential safety hazards and ensure safety.
Anhui Cement Pile Factory
The cause of cracks on the surface of cement pipe. The cracks on the surface of cement pipe are mostly caused by folding, and the key can be divided into two categories: one is caused by the evaporation and hardening of the water on the surface of cement pipe during rigid concrete pouring. Generally, the average external temperature of cement pipe during rigid concrete pouring is high, while the air humidity in the air is low, so the surface will volatilize and dry, but the interior is still plastic, This causes cracks. The other is caused by the temperature difference between the inside and outside of the concrete caused by the water cement ratio when the cement pipe is hardened. For deeper cement pipes, the foundation will continue to settle due to its own weight during the whole process of concrete pouring of the top cement pipe. Then, when the cement pipe is exposed to building reinforcement or the connecting anchor bolt of the template and other items just before the final setting but not before the final setting, this kind of foundation settlement will be blocked and will immediately cause cracks.
Anhui Cement Pile Factory
Cement pipe drainage pipe body has many characteristics. Its heat resistance, flame retardancy and resilience are outstanding features. It is not metal but pipe. No magnetism. Therefore, when placed in the cement tank, no vortex will occur. Cement pipes can be used in many fields, such as rainwater drainage, sewage drainage, industrial wastewater drainage and community drainage. As well as the buried pipelines of highways, or for protecting cables, optical cables, etc. Then the cement pipeline has the following characteristics: 1. Generally speaking, it has rigidity, flexibility and excellent mechanical properties. And it has strong compressive properties. 2. The chemical property is stable, generally corrosion resistant, but non-toxic, and it is an excellent environmental protection pipe.
Anhui Cement Pile Factory
Temperature: for the solidified mortar layer or concrete component, if the cement pipe factory is often in high temperature and extreme heat conditions, there will be strength loss. This is because the calcium hydroxide in the cement stone will be separated under high temperature conditions. In addition, some aggregates will separate or expand in volume under high temperature conditions. Cement raw materials: when selecting cement, cement varieties with high strength, good durability, appropriate price and reliable quality should be selected. The cement varieties with special properties shall be selected according to the service conditions of cement pipes; It is an important condition to ensure the durability of cement pipes to select better sand and stone aggregates, and sand and stone aggregates with good quality and qualified technical conditions.
