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Prestressed high-strength concrete pile

A high-strength concrete and concrete technology, which is applied to sheet pile walls, buildings, and infrastructure engineering, can solve problems such as increased production costs, waste, and increased environmental protection burdens for production companies, so as to reduce coal consumption, improve various performances, and reduce environmental protection. burden effect

Inactive Publication Date: 2009-12-30
GUANGDONG SANHE PILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, in the process of high-pressure maintenance, a large amount of heat energy is discharged in vain to cause waste, and the combustion of coal will also produce a large amount of smoke. treatment, which greatly increases the production cost and increases the environmental protection burden of the production enterprise

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Take 100kg of special mineral admixture and 300kg of cement to form the cementitious material. The self-made special mineral admixture is composed of slag powder, aluminum potassium sulfate, calcium oxide and fly ash, and the proportion of each component to the total amount of concrete is : Slag fine powder 27%, aluminum potassium sulfate 6%, calcium oxide 2%, fly ash 10%. And mix it with other concrete auxiliary materials to form concrete containing 400kg of cementitious material per cubic meter, form it by centrifugation, then let it stand for 1 to 1.5 hours, and cure it with steam for 6 hours at a curing temperature of 80 to 85°C, and then The high-performance concrete pipe pile of the present invention can be obtained after 3-7 days of natural curing.

Embodiment 2

[0016] Take 100kg of special mineral admixture and 320kg of cement to form the cementitious material. The self-made special mineral admixture is composed of slag micropowder, sulphoaluminate, calcium oxide and fly ash, and each component accounts for 30% of the total amount of concrete. The ratio is: 20% of slag fine powder, 8% of sulphoaluminate, 3% of calcium oxide, and 12% of fly ash. And mix it with other concrete auxiliary materials to form concrete containing 420kg of cementitious material per cubic meter, form it by centrifugation, then let it stand for 1 to 1.5 hours, and cure it with steam for 6 hours at a curing temperature of 80 to 85°C, and then The high-performance concrete pipe pile of the present invention can be obtained after 3-7 days of natural curing.

Embodiment 3

[0018] Take 150kg of special mineral admixture and 310kg of cement to form the cementitious material. The self-made special mineral admixture is composed of slag micropowder, sulphoaluminate, calcium oxide and fly ash. The ratio is: 25% of slag fine powder, 6% of sulphoaluminate, 3% of calcium oxide, and 11% of fly ash. And mix it with other concrete auxiliary materials to form concrete containing 460kg of cementitious material per cubic meter, form it by centrifugation, then let it stand for 1 to 1.5 hours, and use steam for 6 hours at a curing temperature of 80 to 85°C, and then The high-performance concrete pipe pile of the present invention can be obtained after 3-7 days of natural curing.

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PUM

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Abstract

The invention discloses a prestressed high-strength concrete (PHC) pile which is characterized in that each cubic meter of pile concrete contains 400kg to 500kg of cementitious materials, high-efficiency naphthalene-based water reducer and required sandstone; wherein, the cementitious materials comprise silicate cement and self-made special mineral admixtures accounting for 20% to 45% of the total amount of the concrete; and the self-made special mineral admixtures comprise the following components by percentage: 15% to 27% of slag powder, 6% to 10% of sulphoaluminate, 2% to 4% of calcium oxide and 10% to 15% of fly ash. By directly employing the normal-pressure steam curing process and the natural curing process after stirring-forming, the invention can satisfy the design requirements for the strength of the pile concrete, thereby reducing the coal consumption by more than 50%, reducing the production cost and the flue gas emission and obviously improving various properties of the manufactured PHC pile.

Description

technical field [0001] The invention relates to a concrete pipe pile, in particular to an autoclaved-free prestressed high-strength concrete pipe pile. Background technique [0002] Today, with the rapid economic development, energy and the environment have become important factors affecting the pace of my country's development. The 17th National Congress of the Communist Party of China has put energy conservation and emission reduction in an important position. At this stage, my country's energy resources are showing a tense trend. Due to mine disasters and the decline in the output of old coal mining bases, coal supply has been insufficient; oil resources are also relatively scarce, and the proportion of my country's oil imports is also increasing. With the international oil price The rise of the industry has caused the production costs of all walks of life to rise all the way. [0003] At present, prestressed high-strength concrete pipe piles (PHC pipe piles) are the most...

Claims

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Application Information

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