Cement pipes have been widely used in urban construction, and have become an indispensable building material in urban construction. In this case, we pay great attention to its production, and the raw materials that have a great influence in the production process are raw materials. Therefore, which raw materials are required in the process of producing cement pipes and what is the role of these raw materials? The following is a small series of cement pipe manufacturers who will take you to see the importance of raw materials and raw materials for manufacturing cement pipes.
Cobble or broken pebble is used for the small-diameter suspension roller tube to reduce the frictional resistance of the stone surface, so that the concrete is simple and compact.Large-diameter suspension roller tube should be machine crushed stone. The rough surface of the stone is easy to embed each other to reduce the concrete Maybe it was falling.
Ordinary Portland cement with the number 425 should be used. Because the suspension rolls are made of dry hard concrete. The mixed water ash is relatively small. The dry shrinkage volume of the cement is small. Because the amount of cement alone is not high, it is generally not presented. Shrinkage cracks. Because the initial setting time of the cement is relatively short. The early strength is high. Regarding the stability and compactness of the concrete, preventing the inner wall from collapsing and improving steam curing have advantages.
Generally, medium sand is used.The concrete has good workability and good impermeability, while the strength of the concrete is low, and the pipe is easy to slump; the sand is thick, the concrete is poor, the workability is good, the impermeability is good, and the mixed strength is high. It is not easy to slump in the pipe, and the selection of the sand rate is also 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; the sand rate is low, the concrete and the Poor performance, poor formability, poor impermeability, and concrete is not easy to slump in pipe making.