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A kind of pressure-free steaming prestressed high-strength pipe pile concrete and pipe pile preparation method

A prestressing and concrete technology, applied in the field of concrete pipe piles, can solve the problems of lithium slag occupying land, polluting the environment, and high energy consumption, and achieve the effects of saving cement consumption, reducing energy consumption, and good grindability

Active Publication Date: 2017-11-28
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Technical problem: The technical problem to be solved by this invention is to provide a method for preparing prestressed high-strength pipe pile concrete and pipe piles without pressure steaming. This invention firstly solves the problem of high energy consumption during autoclave curing of prestressed high-strength pipe piles. Solved the problem of lithium slag occupying land and polluting the environment

Method used

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  • A kind of pressure-free steaming prestressed high-strength pipe pile concrete and pipe pile preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The steam-free prestressed high-strength pipe pile concrete is composed of the following components by mass: 340 parts of PII52.5 cement, 50 parts of mineral powder, 100 parts of lithium slag powder, 25 parts of glass microbead powder, 680 parts of sand, and 1160 parts of crushed stone , 135 parts of water, 5 parts of polycarboxylate superplasticizer, Al 2 (SO 4 ) 3 18H 2 O 2 parts.

[0054] The preparation of pressure-free prestressed high-strength pipe piles includes the following steps:

[0055] 1) Al 2 (SO 4 ) 3 18H 2 O mixed in cement, mineral powder, lithium slag powder, glass microbead powder and stirred evenly;

[0056] 2) Then the remaining materials: sand, gravel, water, polycarboxylate superplasticizer are stirred into uniform concrete;

[0057] 3) Concrete is poured into the pipe pile mold equipped with a steel cage, the fabric is stretched, prestressed, and centrifugally formed;

[0058] 4) Stand still for 2 hours, steam curing at 80°C for 6 hours...

Embodiment 2

[0061] The steam-free prestressed high-strength pipe pile concrete is composed of the following components by mass: 370 parts of PII52.5 cement, 80 parts of mineral powder, 25 parts of lithium slag powder, 40 parts of glass microbead powder, 720 parts of sand, and 1125 parts of crushed stone , 130 parts of water, 4 parts of polycarboxylate superplasticizer, 3 parts of Yuanming powder.

[0062] The preparation of pressure-free prestressed high-strength pipe piles includes the following steps:

[0063] 1) Mix the sodium sulfate into cement, mineral powder, lithium slag powder, and glass microbead powder and stir evenly;

[0064] 2) Then the remaining materials: sand, gravel, water, polycarboxylate superplasticizer are stirred into uniform concrete;

[0065] 3) Concrete is poured into the pipe pile mold equipped with a steel cage, the fabric is stretched, prestressed, and centrifugally formed;

[0066] 4) Stand still for 1 hour, then steam curing at 60°C for 8 hours;

[0067] ...

Embodiment 3

[0069] The steam-free prestressed high-strength pipe pile concrete is composed of the following components by mass: 300 parts of PI52.5 cement, 80 parts of mineral powder, 80 parts of lithium slag powder, 32 parts of glass microbead powder, 700 parts of sand, and 1170 parts of crushed stone , 125 parts of water, 5 parts of polycarboxylate superplasticizer, and 5 parts of gypsum.

[0070] The preparation of pressure-free prestressed high-strength pipe piles includes the following steps:

[0071] 1) Mix gypsum into cement, mineral powder, lithium slag powder, glass microbead powder and stir evenly;

[0072] 2) Then the remaining materials: sand, gravel, water, polycarboxylate superplasticizer are stirred into uniform concrete;

[0073] 3) Concrete is poured into the pipe pile mold equipped with a steel cage, the fabric is stretched, prestressed, and centrifugally formed;

[0074] 4) Stand still for 1 hour, then steam curing at 80°C for 8 hours;

[0075] 5) Demoulding, then na...

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Abstract

The invention relates to autoclaving-free prestressed high-strength tube pile concrete and a tube pile manufacturing method. The concrete is prepared from the following components in parts by mass: 300-420 parts of PI or PII 52.5 cement, 5-80 parts of mineral powder, 5-100 parts of lithium slag powder, 5-40 parts of glass microbead powder, 680-720 parts of sand, 1125-1170 parts of broken stones, 125-135 parts of water, 4-5 parts of a polyocarboxy acid water reducing agent and 2-5 parts of an exciting agent. After stirring and shaping are performed, only constant-pressure steaming is performed for 6-8 hours, the strength requirement of C80 can be met, the energy consumption is reduced, and besides, the lithium slag powder which is industrial waste is utilized for the autoclaving-free concrete tube pile, so that the problem of resource wasting and the problem of environmental pollution are solved to a certain extent.

Description

technical field [0001] The invention relates to the technical field of concrete pipe piles, in particular to a pressure-free steaming prestressed high-strength pipe pile concrete and a method for preparing the pipe piles. Background technique [0002] At present, the industrial production of prestressed high-strength concrete pipe piles generally adopts the combination of atmospheric pressure steam curing and high-pressure curing for the second time. Compression technology has become an urgent problem faced by many pipe pile enterprises. [0003] Patent 200910041269.3 discloses a high-performance prestressed high-strength concrete pipe pile without autoclaving. Each cubic meter of pipe pile concrete contains 400-500kg of Portland cement, self-made special mineral admixture, high-efficiency naphthalene-based water reducer and The required sand and gravel, in which the proportion of each component of the self-made special mineral admixture to the total concrete is: 15-25% of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/20
CPCC04B28/04C04B2111/2015C04B2201/50C04B14/02C04B18/144C04B14/22C04B14/06C04B18/12C04B24/24C04B22/148C04B22/147C04B22/143
Inventor 张亚梅李保亮施锦杰张培根孙正明
Owner SOUTHEAST UNIV
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