Super-high performance concrete compound pipeline preparation method

Abstract

The invention discloses a super-high performance concrete compound pipeline preparation method. A compound pipeline is composed of an outer layer super-high performance concrete pipeline and an inner layer plastic pipeline, and the pipeline forming die adopted comprises a steel outer die and a hard plastic inner die. The method comprises the steps that 1, the dies are assembled, a pumping machine is made to be connected with the dies, and the sealing property of the pumping machine is tested; 2, a super-high performance concrete mixture is prepared; 3, the super-high performance concrete mixture is added into the pumping machine, and a pumping ejecting technology is adopted for pipeline forming; 4, after the pumping is finished, a grouting hole of the assembled dies is sealed in time; 5, entire maintenance is conducted on the dies in the pipeline belt, and die removal can be conducted when super-high performance concrete reaches the die removal intensity; 6, the dies are removed, the steel outer die is removed, and the hard plastic inner die is remained; 7, the pipeline is subjected to wet and heat maintenance or natural maintenance after the die removal is conducted until the intensity meets the requirement. Compared with other traditional pipelines, the pipeline prepared by the super-high performance concrete compound pipeline preparation method has the advantages that the durability is good, the intensity is high, the wall thickness is small, the inner wall is smooth, floatation is not prone to occurring, the sealing performance is good, the inner die is not needed to be removed in the forming process, and the manufacturing technology is simple.

Description

technical field [0001] The invention belongs to the design and manufacture field of water supply and drainage building materials, in particular to a method for preparing an ultra-high performance concrete composite pipe. Background technique [0002] At present, in the water supply and drainage pipeline market, plastic pipes and concrete pipes are widely used, but due to their quality problems, some water supply and drainage pipeline accidents often occur, which affect people's lives. At present, the common concrete pipes that are widely used have fatal defects such as heavy weight, poor corrosion resistance, and easy aging of the interface; compared with ordinary concrete pipes, emerging plastic pipes are lighter in weight, convenient and economical in construction, with smooth pipe walls and no seepage. The leak is pollution-free and has a long service life, but its strength is poor. Due to the light pipe material, it is easy to cause floating in some areas. [0003] Ultr...

AI Technical Summary

Problems solved by technology

[0005]These two concrete pipe forming methods have their own advantages and disadvantages, but none of them can adapt to the forming of ultra-high performance concrete pipes

The ultra-high-performance concrete used in ultra-high-performance concrete pipes contains steel fibers and does not contain coarse aggregate. It is easy to cause delamination of ultra-high-performance concrete when it is formed by centrifugal method, and it is difficult to form a pipe body when it is formed by suspension roller method.