Three raw materials for product cement pipe
The cement pipe produced by the cement pipe making machine is widely used in various occupations. In the process of producing the cement pipe, the required materials are also exquisite. Henan Sitong Cement Products Co., Ltd. will tell you what are the raw materials for cement pipes.
One of the raw materials: stone. Cobble or broken pebble is used for small-diameter suspension roller tube to reduce the frictional resistance of the stone surface, so that the concrete can be easily compacted. Large-diameter suspension roller tube should be machine crushed stone. The stone surface is rough and easy to embed each other to reduce concrete Collapse possibility.
Raw material two: cement. General Portland Cement No. 425 should be used. Due to the use of dry hard concrete for the suspension roll pipe, the mixed water ash is relatively small, and the dry shrinkage volume of the cement is small, so that due to the low amount of unilateral cement, shrinkage cracks generally do not appear. Because the initial setting time of the cement is relatively short and the strength is high in early stage, it has advantages in terms of the stability and compactness of the concrete, avoiding the collapse of the inner wall, and improving steam curing.
Three of raw materials: sand. Generally, medium sand is used. The concrete has good workability and good impermeability, while the strength of concrete is low, and it is easy to slump in the pipe making. The sand is thick, the concrete is poor in workability, and has good impermeability. It is not easy to slump in the pipe, and the selection of sand rate is also very important. The sand rate is high, the concrete is easy to work with, the formability is good, and the impermeability is good, while the concrete in the pipe is easy to slump. Poor performance, poor formability, poor impermeability, and concrete is not easy to slump in pipe making.