Method for manufacturing prestressed concrete tubular pile

Abstract

The invention relates to a method for manufacturing a prestressed concrete tubular pile, which belongs to the technical field of building engineering materials. The method comprises the following steps of: weighing silicate cement, composite superfine powder, sand, broken stone, water and composite water reducing agent in a ratio, pouring the weighed sand into a stirrer, adding the weighed silicate cement and the weighed composite superfine powder into the stirrer in turn, stirring the mixture, then adding the weighed water into the stirrer, stirring the mixture to form cement mortar, adding the weighed composite water reducing agent into the stirrer, and finally adding the weighed broken stone into the stirrer to obtain concrete; pouring the concrete into a tubular pile die, tensing steel bars to obtain a pre-stressing force, and centrifugally shaping the concrete to obtain the prestressed concrete tubular pile; and finally curing the prestressed concrete tubular pile by steam. The manufacturing method only needs low-temperature and normal-pressure steam curing, and has the advantages of simple production equipment, convenient process control, safe production and operation, saving of production land, reduction of product cost, improvement of production efficiency, reduction of environmental pollution, high compression-resistant push, good impact toughness, high fracture toughness and good durability.

Description

[0001] technical field [0002] The invention relates to a method for manufacturing a prestressed concrete pipe pile, which belongs to the technical field of construction engineering materials. Background technique [0003] In the construction of high-rise and super high-rise buildings in our country, hundreds of millions of meters of prestressed concrete pipe piles are needed every year. When these pipe piles are produced, finely ground quartz sand is mixed into the concrete. After centrifugal molding, they need to be steamed at a temperature of 85°C and kept at a constant temperature for 4 hours; After autoclaving at 180°C for 10 hours, the prestressed concrete pipe pile product is obtained, and the strength grade is national standard C80. [0004] The prestressed concrete pipe piles autoclaved in the above-mentioned autoclave require large equipment investment and energy consumption, and the preparation cost of prestressed concrete pipe piles per meter consumes 1 to 2 yuan...

AI Technical Summary

Problems solved by technology

[0004] The prestressed concrete pipe piles autoclaved above require large equipment investment and energy consumption, and the preparation cost of prestressed concrete pipe piles per meter consumes 1 to 2 yuan / m / hour more; moreover, there are many safety hazards during production.