Concrete tube pile with fine milled slag micropowder and production me thod thereof

A concrete pipe pile and finely ground slag technology, which is applied in the field of concrete pipe piles, can solve the problems of pipe pile breakage, low pile sinking rate, and easy damage of pile heads

Inactive Publication Date: 2005-03-23
CHINA MCC20 GRP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention overcomes the defects of the original PHC pipe pile that the pile head is easily damaged and the pipe pile breaks during the pile sinking process, so that the pile sinking rate is low, and provides a concrete pipe pile mixed with fine slag powder, which is also Provided is a production method for producing the concrete pipe pile mixed with ground fine slag powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: PHC AB type φ400×90mm pipe pile mixed with 25% finely ground slag powder, the specific ratio is as follows:

[0018] Ordinary 42.5 grade cement 375Kg Medium sand 674Kg

[0019] Crushed stone (5-25mm) 1150Kg Finely ground slag powder (S95 type) 125Kg

[0020] Water (domestic water) 140Kg Water reducer 10Kg

[0021] Water cement ratio (W / C) 0.28

[0022] The production method is as follows: put the raw materials of the above mixing ratio into the mixer, the mixing time is 180 seconds, and the measured slump is 40mm. After mixing, the mixing material is quickly poured into the pipe pile mold, and then centrifugal molding is carried out. The centrifugal molding time is respectively It is: 120 seconds at low speed, 180 seconds at medium speed, 120 seconds at medium speed, and 540 seconds at high speed. The maintenance adopts two forms of normal pressure steam health preservation and high pressure steam health preservation: a. Normal pressure steam health preserv...

Embodiment 2

[0023] Example 2: PHC AB type φ500×100mm pipe pile mixed with 30% finely ground slag powder, the specific ratio is as follows:

[0024] Ordinary 42.5 grade cement 350Kg Medium sand 644Kg

[0025] Crushed stone (5-25mm) 1196Kg Finely ground slag powder (S95 type) 150Kg

[0026] Water (domestic water) 130Kg Water reducer 10Kg

[0027] Water cement ratio (W / C) 0.26

[0028] The production method is as follows: put the raw materials in the above mixing ratio into the mixer, the mixing time is 180 seconds, and the measured slump is 50mm. It is: 120 seconds at low speed, 180 seconds at medium speed, 120 seconds at medium speed, and 540 seconds at high speed. The maintenance adopts two forms of normal pressure steam health preservation and high pressure steam health preservation: a. Normal pressure steam health preservation: rest for 2 hours—heat up for 2 hours— —Constant temperature for 5 hours—cooling for 1 hour; b. High-pressure steam health preservation: heating up in the auto...

Embodiment 3

[0029] Example 3: PHC AB type φ600×110mm pipe pile mixed with 35% finely ground slag powder, the specific ratio is as follows:

[0030] Ordinary 42.5 grade cement 325Kg Medium sand 620Kg

[0031] Crushed stone (5-25mm) 1214Kg Finely ground slag powder (S95 type) 175Kg

[0032] Water (domestic water) 126Kg Water reducer 10Kg

[0033] Water cement ratio (W / C) 0.252

[0034] The production method is as follows: put the raw materials in the above mixing ratio into the mixer, the mixing time is 180 seconds, and the measured slump is 50mm. It is: 120 seconds at low speed, 180 seconds at medium speed, 120 seconds at medium speed, and 540 seconds at high speed. The maintenance adopts two forms of normal pressure steam health preservation and high pressure steam health preservation: a. Normal pressure steam health preservation: rest for 2 hours—heat up for 2 hours— —Constant temperature for 5 hours—cooling for 1 hour; b. High-pressure steam health preservation: heating up in the aut...

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Abstract

The invention relates to a concrete pipe pile mixed into size reduction slag miropowder, used in civil construction industry, and its production method. It includes cement, 1 (weight portion) yellow sand (1.5 to 2.9), broken stone (3.2 to 5.0), water (0.3 to 0.6), water reducing agent (0.025 to 0.045), size reduction slag miropowder (0.2 to 1). Its production method is premixing for thirty seconds, stirring with the water and the water reducing agent uniformly and poured continuously at one end of pipe pile mould, centrifugal forming, conserved. The advantages are improving its concrete intension, impermeability, crack resistance, and resistance to bending saving concrete and water and low cost.

Description

technical field [0001] The invention relates to a concrete pipe pile mixed with ground fine slag powder used in civil construction industry, and also relates to a production method of the concrete pipe pile mixed with ground fine slag powder. Background technique [0002] At present, in some major projects, some construction units choose steel pipe piles or steel pipe concrete piles as the bearing foundation piles of buildings and large equipment foundations. However, due to the high cost of steel pipe piles or steel pipe concrete piles, the cost of construction will be increased after use. Therefore, most construction units now use PHC pipe piles (ie prestressed high-strength concrete pipe piles) instead of steel pipe piles or steel pipe piles. Concrete piles are used as load-bearing foundation piles to reduce construction costs. However, due to the defects of PHC piles’ insufficient impact resistance and fatigue strength, as a load-bearing foundation pile, it cannot meet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/20C04B18/12E02D5/30
CPCY02W30/91
Inventor 魏宏超邢元左广兴谢运青刘军谢非祃丽婷乔晓娟马丁
Owner CHINA MCC20 GRP CORP
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