The quality of the cement that cannot be set beyond 12 hours is not good. The logo on the paper bag includes the factory title, production license number, cement title, Hainan cement pipeline registered trademark, type (including type code), label, packaging year, month, day, and number. After three months of storage, the strength of the cement dropped by 10% to 20%, after six months it fell by 15% to 30%, and Hainan cement products fell by 25% to 40% after one year. There is also a period of use for cement, and the performance of cement beyond 30 days will be reduced.
Cautions for the use of cement pipe piles during the start-up operation: You must strictly check the power supply insulation safety status before use. Motors are forbidden from using the phase. It is forbidden to contact the switch heads to the machine risk homework. Otherwise, incorrect operation will cause employee injury or equipment damage. You must wear rubber insulated shoes and rubber insulated gloves for homework. No damp clumping. Must depend on the date of production of net cement. Vinylon cement cable tube uses vinylon fiber and other reinforcing fibers to participate in high-grade cement. It uses the non-metallic pipe produced by the "Hasek" method of the current international long-term advancement. It has high strength, corrosion resistance, high temperature resistance, non-magnetic Features such as damage, inner wall lubrication, cutability, long life, and fast construction. It can maintain underground cables without polluting the environment and has a service life of more than 100 years. It is the first choice for laying underground cables in power and telecommunications. The use of diamond (special for pipe pile) saw blades is recommended. In order to extend the service life of the saw blade, the saw blade should be filled with water to cool it during the entire cutting process. Dry-cutting is prohibited in Hainan pipeline. High-quality cement, can be set for more than 6 hours. The glory of investigation is dark gray or dark green, and the strength of cement is relatively low with glorious yellowing and whitishness (yellowishness indicates that clinker is raw burnt and excessive whitening slag content).
Different types of cement pipes use different color identification. Portland cement and general portland cement are red, green for slag cement, and black for pozzolan and fly ash cement. Twist the cement powder with your fingers and feel a small amount of fine, sand, powder, indicating that the cement fineness is normal. The machine must be connected to ground when the machine is in use. The quality of the cement pipe is different from the quality of the cement. The paper bag of the cement is well packaged and completely labeled.