Preparation method of non-autoclaved high-performance prefabricated pipe pile

A prefabricated pipe pile, high-performance technology, applied in the direction of manufacturing tools, solid waste management, climate sustainability, etc., can solve the problems that microbead powder cannot realize natural feeding, low activity, and feeding port blockage

Inactive Publication Date: 2021-05-11
沧兴管桩有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the prior art, microbead powder is mainly used as raw material to prepare autoclave-free pipe piles, but the following problems generally exist in the preparation of autoclave-free pipe piles by this process: (1) microbead powder generally has unstable quality and Disadvantages of low activity; (2) The microbead powder storage silo is easy to stick to the silo wall and the feeding port is blocked; (3) The microbead powder cannot be fed naturally by gravity

Method used

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  • Preparation method of non-autoclaved high-performance prefabricated pipe pile
  • Preparation method of non-autoclaved high-performance prefabricated pipe pile

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[0045] The invention provides a method for preparing autoclaved high-performance prefabricated pipe piles, comprising the following steps:

[0046] 1) Take the following raw materials in proportion:

[0047] 280-330 parts of cement for prefabricated pipe piles,

[0048] S115 grade composite admixture 130~170 parts,

[0049] 10-13 parts of high-performance water reducer,

[0050] Machine-made sand 750-850 parts,

[0051] Crushed stone 1150~1250 parts;

[0052] 2) Mix the raw materials in step 1) with water in proportion, and stir evenly to obtain concrete. At the same time, the steel rods are straightened and cut to length, the wires are cold-drawn, and the cage knitting machine is used to make reinforced dragons, and the ends are connected The plate steel hoop is assembled;

[0053] 3) Fabric tensioning: weigh and measure the mixed concrete material according to the specification length, feed it into the pipe mold fabric, and implement prestress tension on the reinforceme...

Embodiment 1

[0078] A method for preparing autoclaved high-performance prefabricated pipe piles, comprising the following steps:

[0079] 1) Take the following raw materials in proportion:

[0080] 280 parts of special cement for prefabricated pipe piles,

[0081] 150 parts of S115 grade composite admixture,

[0082] 10 parts of polycarboxylate superplasticizer,

[0083] Machine-made sand 830 parts,

[0084] 1220 pieces of gravel;

[0085] 2) Mix the raw materials in step 1) with water in proportion, and stir evenly to obtain concrete with a water-binder ratio of 0.25, and prepare reinforced dragons at the same time;

[0086] 3) Fabric tensioning: weigh and measure the mixed concrete material according to the specification length, feed it into the pipe mold fabric, and implement prestress tension on the reinforcement cage according to the design tension stress at the same time;

[0087] 4) Centrifugal forming: adopt the centrifugal system in stages, the speed of the slow cloth pipe mo...

Embodiment 2

[0112] A method for preparing autoclaved high-performance prefabricated pipe piles, comprising the following steps:

[0113] 1) Take the following raw materials in proportion:

[0114] 315 parts of cement for prefabricated pipe piles,

[0115] 135 parts of S115 grade composite admixture,

[0116] Polycarboxylate superplasticizer 11 parts,

[0117] Machine-made sand 820 parts,

[0118] Crushed stone 1210 parts;

[0119] 2) Mix the raw materials in step 1) with water in proportion, and stir evenly to obtain concrete with a water-binder ratio of 0.25. At the same time, straighten the steel rods to a fixed length and cut them off, cold draw the wires, and weave them through a cage knitting machine to make steel bars Long, and assembled with end plate steel ferrule;

[0120] 3) Fabric tensioning: weigh and measure the mixed concrete material according to the specification length, feed it into the pipe mold fabric, and implement prestress tension on the reinforcement cage accor...

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Abstract

The invention provides a preparation method of a non-autoclaved high-performance prefabricated pipe pile. The method adopts the following steps including taking special cement for the pipe pile, an S115-grade composite admixture, a high-performance water reducing agent, machine-made sand and gravel as raw materials, preparing concrete, uniformly stirring, preparing a reinforcement cage, distributing and tensioning, centrifugally forming, carrying out normal-pressure steam curing, demolding, carrying out quality inspection, putting into a product storage yard and the like to obtain the finished non-autoclaved high-performance prefabricated pipe pile. The method is simple in process and low in cost, the prepared finished non-autoclaved high-performance prefabricated pipe pile has good stability, hitting (pressing) resistance, permeability resistance and corrosion resistance, the product design life is prolonged, durability is remarkably improved, conversion from common high-strength concrete to high-performance concrete of the pipe pile is achieved, and the concepts of ecological priority, green development and high-quality development in the new era are realized.

Description

technical field [0001] The invention relates to the technical field of prefabricated pipe pile preparation technology, in particular to a preparation method of autoclaved high-performance prefabricated pipe pile. Background technique [0002] In the past ten years, my country's concrete technology has developed rapidly, and the preparation or use of high-strength and high-performance concrete above C80 has become very common. For example, the National Grand Theater, Canton Tower and Tianjin 117 Project, as well as my country's electrified railway concrete pillars and large bending moment concrete poles all use C100 high-strength and high-performance concrete in the construction process. It can be seen that my country has accumulated rich experience in the preparation or improvement of high-strength and high-performance concrete. [0003] Now that we have entered a brand new era, achieving high-quality development, giving priority to environmental protection and ecology, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B21/60B28B21/30B28B21/90B28B11/24C04B28/14C04B18/12C04B18/08C04B14/06C04B111/56
CPCB28B21/60B28B21/30B28B21/90B28B11/245C04B28/14C04B18/12C04B14/06C04B18/08C04B2111/56C04B2201/50C04B18/146C04B22/064C04B22/147C04B7/00C04B2103/302C04B32/02Y02W30/91
Inventor 纪爱民
Owner 沧兴管桩有限公司
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