Concrete pipe pile

Abstract

The invention discloses a concrete tubular pile, which is characterized in that the tubular pile is casted by concrete, wherein each cubic meter concrete comprises raw materials with the following parts by weight, 280+-20 parts of cement, 130+-10 parts of mixture of milling silica sand and slag micro-powder or slag micro-powder, 190+-20 parts of residual serum, 580+-50 parts of sand, 350+-50 parts of small stones, 1100+-100 parts of crud stones, water reducer whose weigh is equal to 0.5-0.75% of whole parts by weight of cement and milling silica sand, and appropriate amount of water, wherein the weight concentration of gelling material in the residual serum is 30-40%. The concrete tubular pipe fully utilizes the residual serum which is produced in the tubular pile production process, and effectively utilizes blast-furnace waste slag which is produced in steel-smelting industry, thereby obtaining excellent environment-friendly benefits, saving cement usage, and reducing production cost. Concrete strength of the body of tubular pile reaches over C90 after tested.

Description

technical field [0001] The invention relates to a slag concrete pipe pile. Background technique [0002] At present, with the continuous development of social economy, there is a huge demand for ultra-high-strength prestressed concrete pipe piles used in infrastructure and high-rise buildings. The raw materials of ultra-high-strength prestressed concrete pipe piles are composed of river sand and stones that constitute aggregates, cement that fills the gaps between aggregates and acts as a coagulation cement, finely ground silica sand, water, and water reducing agents. In the process, each raw material should be mixed into a mixture according to the formula with a mixer, and then the mixture is put into the steel mold of the pipe pile, and then through the process of tensioning prestressed steel bars, centrifugal forming and steam curing, the ultra-high-strength prestressed concrete is produced. pipe pile. A large amount of residual slurry will be separated during the centr...

AI Technical Summary

Problems solved by technology

A large amount of residual slurry will be separated during the centrifugal molding process. Since the residual slurry also contains certain cement, finely ground silica sand and other cementitious materials, if it is directly discharged, it will not only have a serious impact on the environment, but also cause a waste of resources. ; At the same time, a large amount of blast furnace slag is also produced in the steelmaking process, and these blast furnace slags are usually disposed of by landfill, which will also have a certain impact on the environment