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High-strength prestressed concrete pipe-styled pile blended with ground river sands and production method thereof

A high-strength concrete and prestressed technology, applied in chemical instruments and methods, sheet pile walls, reinforcement molding, etc., can solve the problems of insufficient material sources, low mill output, and high processing costs, and achieve rich sources of river sand, Good grindability and the effect of improving strength

Inactive Publication Date: 2010-03-17
广东建华管桩有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the invention patent 95116762.6, the method of "process for producing prestressed high-strength concrete pipe piles mixed with ground construction sand" is proposed. The specific surface area of ​​the ground construction sand required by this method must be ≥ 435m 2 / kg, which leads to high power consumption when grinding, and the output of the mill is not high, and the processing cost is high
In another patent 03112836.X, a "technical method for producing prestressed high-strength concrete pipe piles mixed with finely ground high-silica sand" is proposed. In this patent, the silica content of finely ground high-silica sand is relatively high, and its equivalent can replace grades above 42.5 The maximum amount of Portland cement is 40%, the material source of this prestressed high-strength concrete pipe pile is not sufficient, and the production cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Produce A-type prestressed high-strength concrete pipe piles with an outer diameter of 400mm and a wall thickness of 95mm. The materials are configured according to the following weight ratio, (cement + finely ground river sand): sand: stone: naphthalene superplasticizer: water: finely ground river sand = 1: 1.58: 2.69: 0.0065: 0.28: 0.25. Among them, the specific surface area of ​​fine river sand is 380m 2 / kg, the stone is continuously graded with a particle size of 5-25mm, the crushing index value is ≤7%, and the mud content is ≤0.5%. Cover 100% of the sand on the bottom of the forced concrete mixer, and then add 100% of the sand Cement and 100% finely ground river sand, dry mix for 15s, add 90% of the set water, stir for 30-40s, then add 100% stones for stirring, add water reducer within 10-20s, and then according to the mixture The actual water content, and then add the remaining water as appropriate, stir evenly, the total time is not less than 3.5min. Then, in ...

Embodiment 2

[0022] Produce A-type prestressed high-strength concrete pipe piles with an outer diameter of 500mm and a wall thickness of 125mm. The materials are configured according to the following weight ratio, (cement + finely ground river sand): sand: stone: naphthalene-based superplasticizer: water: finely ground river sand = 1: 1.45: 2.82: 0.0066: 0.29: 0.30. Among them, the specific surface area of ​​fine river sand is 400m 2 / kg, the stone is continuously graded with a particle size of 5-25mm, the crushing index value is ≤7%, and the mud content is ≤0.5%. Cover 100% of the sand on the bottom of the forced concrete mixer, and then add 100% of the sand Cement and 100% finely ground river sand, dry mix for 15s, add 90% of the set water, stir for 30-40s, then add 100% stones for stirring, add water reducer within 10-20s, and then according to the mixture The actual water content, and then add the remaining water as appropriate, stir evenly, the total time is not less than 3.5min. Th...

Embodiment 3

[0024] Produce AB-type prestressed high-strength concrete pipe piles with an outer diameter of 500mm and a wall thickness of 100mm. The materials are configured according to the following weight ratio, (cement + finely ground river sand): sand: stone: naphthalene-based superplasticizer: water: finely ground river sand = 1: 1.54: 2.73: 0.0065: 0.29: 0.40. Among them, the specific surface area of ​​fine river sand is 380m 2 / kg, the stone is continuously graded with a particle size of 5-25mm, the crushing index value is ≤7%, and the mud content is ≤0.5%. Cover 100% of the sand on the bottom of the forced concrete mixer, and then add 100% of the sand Cement and 100% finely ground river sand, dry mix for 15s, add 90% of the set water, stir for 30-40s, then add 100% stones for stirring, add water reducer within 10-20s, and then according to the mixture The actual water content, and then add the remaining water as appropriate, stir evenly, the total time is not less than 3.5min. T...

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Abstract

The invention discloses a high-strength prestressed concrete pipe-styled pile blended with ground river sands, which is composed of binding material, sands, stones, water reducers, water, ground riversands and reinforcing steel bars, wherein the binding material : sands : stones : water reducers : water : ground river sands is equal to 1:1.45-1.62:2.65-2.82:0.0065-0.0068:0.28-0.3:0.1-0.45 by weight ratio. The invention aims at overcoming the disadvantages in the prior art and provides a high-strength prestressed concrete pipe-styled pile blended with ground river sands, which has plentiful raw materials, low production energy consumption and low production cost. The invention also aims at providing a method for producing the high-strength prestressed concrete pipe-styled pile, and the property of the high-strength prestressed concrete pipe-styled pile can reach and exceed the property of PHC piles without being blended with additives and the concrete; the source of river sands is plentiful, cement with high price can be saved and the production cost is reduced greatly.

Description

[technical field] [0001] The invention relates to a prestressed high-strength concrete pipe pile produced by mixing fine river sand, and also relates to a method for producing the prestressed high-strength concrete pipe pile. [Background technique] [0002] In the prior art, the cementitious material used in the production of prestressed high-strength concrete pipe piles is portland cement above grade 42.5. In the invention patent 95116762.6, the method of "process for producing prestressed high-strength concrete pipe piles mixed with ground construction sand" is proposed. The specific surface area of ​​the ground construction sand required by this method must be ≥ 435m 2 / kg, which leads to high power consumption when grinding, and the output of the mill is not high, and the processing cost is high. In another patent 03112836.X, a "technical method for producing prestressed high-strength concrete pipe piles mixed with finely ground high-silica sand" is proposed. In this pa...

Claims

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Application Information

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IPC IPC(8): E02D5/58E02D5/30B28C7/04B28C5/00B28B21/60B28B21/68C04B28/04C04B14/06
Inventor 曾晓文周传翠
Owner 广东建华管桩有限公司
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