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(Ultra)high-strength prestressing concrete pipe pile

A technology of concrete pipe piles and prestressing, which is applied in sheet pile walls, buildings, and foundation structure engineering, etc. It can solve problems such as environmental impact and waste of resources, and achieve the effects of less cement content, less consumption, dense and reasonable structure

Active Publication Date: 2008-08-13
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

[0014] Calculated per cubic meter of concrete, take 130kg of ground silica sand with 240kg of cement, 130kg of 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 coarse stones with a diameter of 1.5~3cm, model HD-5 produced by Kao Enterprise, equivalent to 0.5% of the total weight of cement and ground silica sand, add water and stir into a mixture with a mixer, and then put the mixture into In the pipe pile steel mold, the (super) high-strength pre-stressed concrete pipe pile is produced through the processes of tensioning the prestressed steel bar, centrifugal forming and steam curing.

Embodiment 2

[0016] Calculated per cubic meter of concrete, take 250kg of cement, 135kg of 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, and 300kg of small stones with a particle size of 0.5-1.5cm. 1150kg of coarse stones with a diameter of 1.5~3cm, model HD-5 produced by Kao Enterprise, equivalent to 0.75% of the total weight of cement and ground silica sand, add water and stir into a mixture with a mixer, and then put the mixture into In the pipe pile steel mold, the (super) high-strength pre-stressed concrete pipe pile is produced through the processes of tensioning the prestressed steel bar, centrifugal forming and steam curing.

Embodiment 3

[0018] Calculated per cubic meter of concrete, take 260kg of cement, 135kg of 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, and 290kg of small stones with a particle size of 0.5-1.5cm. 1150kg of coarse stones with a diameter of 1.5~3cm, model HD-5 produced by Jiangmen Changli Chemical Co., Ltd., equivalent to 0.6% of the total weight of cement and ground silica sand, add water and stir into a mixture with a mixer, and then mix The mixed material is distributed into the pipe pile steel mold, and the (super) high-strength pre-stressed 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+_ 10 parts 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 in surplus 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 (super) 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 pre-stressed concrete pipe piles used in infrastructure and high-rise buildings. The raw materials of (super) high-strength pre-stressed concrete pipe piles are composed of river sand and stones that constitute aggregates, cement, ground silica sand, water, and water reducing agents, which are filled in the gaps between the aggregates and have a coagulation effect. In the production process, the raw materials are mixed into a mixture according to the formula with a mixer, and then the mixture is distributed into the pipe pile steel mold, and then through the processes of tensioning the prestressed steel bar, centrifugal molding and steam curing, it is produced (super) High-strength prestressed concrete pipe piles. In the centrifugal moldi...

Claims

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Application Information

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IPC IPC(8): E02D5/58
Inventor 韦泽林刘凡
Owner GUANGDONG SANHE PILE CO LTD
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