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Manufacturing method for high-strength concrete pile

A technology of concrete columns and manufacturing methods, which is applied to sheet pile walls, manufacturing tools, ceramic molding machines, etc., can solve the problems of long service life and achieve the effects of improved reliability, long service life, and improved durability

Inactive Publication Date: 2014-07-30
NANTONG HUAZHU CEMENT PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned patent documents can basically meet the requirements of construction, but with the development of science and technology, the strength of the pipe pile will be higher and the service life will be longer. There is still a need for further breakthroughs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1 provides the following technical solutions: a method for manufacturing high-strength concrete column piles, the steps of the manufacturing method include ingredients—mixing—rebar cage production—concrete pouring—cloth tensioning, centrifugal molding—steam curing—releasing tension Mold-pressure steam curing.

[0016] The formula of the batching step is: the raw materials are measured per cubic meter, including 450 kg of Portland cement, 1200 kg of stones, 8.6 kg of admixture, 670 kg of dry river sand, and 150 kg of water.

[0017] The tensile force of the prestressing tension is 300t.

[0018] The centrifugal forming steps are as follows: the rotation speed is changed in sequence as follows: low speed 60 r / min for 2 min, medium and low speed 100 r / min for 1.5 min, medium speed 240 r / min for 2 min, and high speed 340 r / min for 5 min.

[0019] The steam curing process is as follows: firstly, it is statically stopped for 1 hour, and then the temperature is raised to 100° ...

Embodiment 2

[0021] Embodiment 2 provides the following technical solution: a method for manufacturing high-strength concrete column piles, the steps of the manufacturing method include ingredients—mixing—rebar cage production—concrete pouring—cloth tensioning, centrifugal molding—steam curing—releasing tension Mold-pressure steam curing.

[0022] The formula of the batching step is: the raw materials are measured per cubic meter including 430 kg of Portland cement, 1360 kg of stones, 9 kg of admixtures, 100 kg of water, and 700 kg of dry river sand.

[0023] The tensile force of the prestressing tension is 300t.

[0024] The centrifugal forming steps are as follows: the rotation speed changes in order of 67 r / min for low speed for 3 min, medium and low speed for 120 r / min for 2 min, medium speed for 280 r / min for 5 min, and high speed for 480 r / min for 8 min.

[0025] The steam curing process is as follows: firstly, it is statically stopped for 1 hour, and then the temperature is raised to 100° C...

Embodiment 3

[0027] Embodiment 3 provides the following technical solution: a method for manufacturing high-strength concrete column piles, the steps of the manufacturing method include batching-mixing-steel cage production-concrete pouring-cloth tensioning, centrifugal molding-steam curing-releasing tension Mold-pressure steam curing.

[0028] The formula of the batching step is: the raw materials are measured per cubic meter, including 440 kg of Portland cement, 1300 kg of stones, 8.8 kg of admixture, 690 kg of dry river sand, and 130 kg of water.

[0029] The tensile force of the fabric tension is 300t.

[0030] The centrifugal forming steps are as follows: the rotation speed changes in sequence: low speed 65 r / min for 2.5 min, medium and low speed 110 r / min for 1.8 min, medium speed 250 r / min for 3 min, and high speed 450 r / min for 7 min.

[0031] The steam curing process is as follows: firstly, it is statically stopped for 1 hour, and then the temperature is raised to 100° C. and the temperat...

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Abstract

The invention discloses a manufacturing method for a high-strength concrete pile. The manufacturing method comprises the following steps of preparing materials, mixing, making a reinforcement cage, pouring concrete, prestress tensioning, centrifugal forming, steam curing, extending and demouldng, and pressure steam curing. According to the manufacturing method, the durability and strength of products are further improved, and the use reliability is greatly improved.

Description

Technical field [0001] The invention relates to the field of concrete column pile manufacturing, in particular to a high-strength concrete column pile. Background technique [0002] Pipe piles have been produced in my country for more than 20 years. The number of manufacturers has gone from one or two at the beginning to hundreds of companies. The annual output of pipe piles in my country is already the world's first. However, there are still many problems in the quality control of the pipe pile production process. For example, how to determine the process parameters of the pipe pile centrifugal forming process is very arbitrary for each manufacturer. Even in some large-scale manufacturers, some The technical supervisor also lacks this knowledge and understanding of the characteristics of the actual pipe pile centrifugal concrete structure, and only stays on the general concept of "concrete dense" by centrifugal forming. Therefore, the structure (macro and micro) of centrifugall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B21/30B28B11/24E02D5/30C04B28/04C04B14/06C04B14/02
CPCB28B21/30B28B11/245C04B28/04C04B14/06C04B14/02
Inventor 杨正武
Owner NANTONG HUAZHU CEMENT PROD
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