Method for manufacturing prestressed concrete tubular pile

A technology of concrete pipe piles and manufacturing methods, which is applied in the direction of manufacturing tools, ceramic molding machines, etc., can solve the problems of large equipment investment, large energy consumption, and many safety hazards, and achieve the goals of reducing pollution, reducing production costs, and fast production turnover Effect

Inactive Publication Date: 2010-10-20
深圳市同成新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The prestressed concrete pipe piles autoclaved above require large equipment investment and energy consumption, and the preparatio...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] To manufacture prestressed concrete pipe piles of 1 cubic meter of concrete, the proportion of ingredients is as follows (in kilograms):

[0041] Cement Composite superfine powder Sand Gravel Water Composite water reducer

[0042] 330 90 750 1300 92 11

[0043] Among the above composite ultrafine powders, 8 parts of microbead ultrafine powder and 1 part of clinoptilolite ultrafine powder. Among the above composite water reducers, there is 1 part of naphthalene-based water-reducer, 2 parts of sulfamic acid-based water-reducer, and 1 part of natural zeolite superfine powder.

[0044] Put the sand, cement, and composite superfine powder of the above concrete ingredients into the mixer one after another, after mixing evenly, add the water of the ingredients, after mixing evenly, then add the composite water reducing agent, and stir to form a fluid mortar. Put in the batched crushed stone and stir evenly to obtain the concrete mixture. After pouring into the mould, stretc...

Embodiment 2

[0046] To manufacture prestressed concrete pipe piles of 1 cubic meter of concrete, the proportion of ingredients is as follows (in kilograms):

[0047] Cement Composite superfine powder Sand Gravel Water Composite water reducer

[0048] 320 100 750 1300 92 10

[0049] Among the above-mentioned composite ultrafine powders, the microbead ultrafine powder is 8 parts, and the natural zeolite ultrafine powder is 2 parts. Among the above composite water reducers, there is 1 part of naphthalene-based water-reducer, 2 parts of sulfamic acid-based water-reducer, and 1 part of mordenite superfine powder.

[0050] Carry out atmospheric pressure steaming. The temperature is 85°C, and the temperature is kept constant for 4-5 hours. The compressive strength of the specimen is 98MPa. It has reached the high strength of the national standard C90.

Embodiment 3

[0052] To manufacture prestressed concrete pipe piles of 1 cubic meter of concrete, the proportion of ingredients is as follows (in kilograms):

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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...

Claims

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Application Information

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IPC IPC(8): B28B21/32C04B28/04
CPCC04B2111/00086C04B2111/00025C04B2111/56C04B2111/00017C04B2111/2038C04B28/04C04B2111/2046
Inventor 冯乃谦陈乐雄李浩
Owner 深圳市同成新材料科技有限公司
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