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(Ultra)high-strength prestressing concrete pipe pile

A concrete pipe pile, prestressing technology, applied in sheet pile wall, construction, infrastructure engineering and other directions, can solve problems such as environmental impact, waste of resources, etc., and achieve the effect of less cement content, saving consumption, compact and reasonable structure

Active Publication Date: 2010-06-02
GUANGDONG SANHE PILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] For each cubic meter of concrete, take 240kg of cement, 130kg of finely ground silica sand with a specific surface area greater than 420, 150kg of residual slurry, 650kg of sand with a fineness modulus of 2.5-3.2, 400kg of small stones with a particle size of 0.5-1.5cm, 1050kg of rough stones with a diameter of 1.5 to 3cm, the model HD-5 produced by Kao Enterprises, a water reducing agent equivalent to 0.5% of the total weight of cement and finely ground silica sand, add water and stir with a mixer to form a mixture, and then put the mixture into the In the pipe pile steel mold, high-strength prestressed concrete pipe piles are produced through the processes of tensioning prestressed steel bars, centrifugal forming and steam curing.

Embodiment 2

[0014] For each cubic meter of concrete, take 250kg of cement, 135kg of finely ground silica sand with a specific surface area greater than 420, 140kg of residual slurry, 650kg of sand with a fineness modulus of 2.5-3.2, 300kg of small stones with a particle size of 0.5-1.5cm, 1150kg of rough stones with a diameter of 1.5-3cm, the model HD-5 produced by Kao Enterprises, and a water reducing agent equivalent to 0.75% of the total weight of cement and finely ground silica sand, add water and stir with a mixer to form a mixture, and then put the mixture into the In the pipe pile steel mold, high-strength prestressed concrete pipe piles are produced through the processes of tensioning prestressed steel bars, centrifugal forming and steam curing.

Embodiment 3

[0016] For each cubic meter of concrete, take 260kg of cement, 135kg of finely ground silica sand with a specific surface area greater than 420, 130kg of residual slurry, 620kg of sand with a fineness modulus of 2.5-3.2, 290kg of small stones with a particle size of 0.5-1.5cm, 1150kg of rough stones with a diameter of 1.5-3cm, the model HD-5 produced by Jiangmen Changli Chemical Co., Ltd., which is equivalent to 0.6% of the total weight of cement and finely ground silica sand, add water and stir with a mixer to form a mixture, and then The mixed material is put into the steel mold of the pipe pile, and the high-strength prestressed concrete pipe pile is produced through the processes of tensioning the prestressed steel bar, centrifugal forming and steam curing.

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Abstract

The invention discloses a (super) high strength prestressed concrete pipe pile which is poured by concrete. Each cubic metre of the concrete comprises following raw materials by weight parts: 250+_ 10parts of cement, 135+_10 parts of grinded quartz sand, 190+_10 parts of surplus paste, 580+_50 parts of medium sand, 350+_50 parts of small stones, 1100+_100 parts of rough stones, water reducing agent the weight parts of which are corresponding to 0.5-0.7526154000f total weight parts of concrete and grinded quartz sand, and adequate water. Wherein, the weight concentration of gelled material insurplus paste is 30-40 According to the invention, surplus paste generated during pipe pile production is utilized sufficiently, so that excellent environmental protection benefit is obtained. Pipe piles of high-strength prestressed concrete with intensity up to c95 are fabricated by using low rubber materials.

Description

technical field [0001] The invention relates to a high-strength prestressed concrete pipe pile. Background technique [0002] At present, with the continuous development of social economy, there is a huge demand for (super) 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 production process, each raw material should be mixed into a mixture according to the formula with a mixer, and then the mixture should be put into the steel mold of the pipe pile, and then go through the processes of tensioning prestressed steel bars, centrifugal forming and steam curing to produce (super) High-strength prestressed concrete pipe piles. A large amount of residu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/58
Inventor 韦泽林刘凡
Owner GUANGDONG SANHE PILE CO LTD
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