Novel reinforced bar type ultra-high-performance concrete pipeline and preparing method thereof

An ultra-high performance, concrete technology, applied in rigid pipes, pipes, reinforcement molding, etc., can solve the problems of difficulty in forming a pipe body, no way to adapt to ultra-high-performance concrete pipe forming, ultra-high-performance concrete layering, etc., and achieve damage. The effect of increased load, shortened construction period and small roughness coefficient

Inactive Publication Date: 2015-08-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]These two concrete pipe forming methods have their own advantages and disadvantages, but none of them can adapt to the forming of ultra-high performance concrete pipes
The ultra-high-performance concrete used in ultra-high-performance concrete pipes contains steel fibers and does not contain coarse aggregate. It is easy to cause delamination of ultra-high-performance concrete when it is formed by centrifugal method, and it is difficult to form a pipe body when it is formed by suspension roller method.

Method used

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  • Novel reinforced bar type ultra-high-performance concrete pipeline and preparing method thereof
  • Novel reinforced bar type ultra-high-performance concrete pipeline and preparing method thereof
  • Novel reinforced bar type ultra-high-performance concrete pipeline and preparing method thereof

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Experimental program
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Effect test

Embodiment 1

[0039] Such as Figure 1 to Figure 3 As shown, a new ultra-high-performance concrete pipeline in the form of reinforcement includes a pipeline body 2 and a steel skeleton arranged in the pipeline body 2, and the steel skeleton includes ring bars 1 uniformly arranged along the length direction of the pipeline body 2 And the longitudinal reinforcement connecting each ring reinforcement 1, the shape of the ring reinforcement 1 is ellipse, the thickness of the steel skeleton protective layer is not less than 10mm, and the thickness of the pipe wall is not less than 60mm.

Embodiment 2

[0041] A method for preparing ultra-high-performance concrete pipelines in the form of new reinforcement. The pipeline forming molds used include steel outer molds and hard plastic inner molds. Inner diameter 1000mm, wall thickness 60mm (see Figure 1 to Figure 3 ), including the steps:

[0042] 1) Welded steel skeleton, the longitudinal reinforcement of the skeleton remains unchanged, the ring reinforcement 1 is processed into an oval shape, equipped with 16 longitudinal reinforcements, and the distance between the oval ring reinforcement is 240mm;

[0043] 2) Assemble the mold and fix the steel frame, connect the pumping machine with the mold, and check its sealing performance;

[0044] 3) Prepare ultra-high performance concrete mixture;

[0045] 4) Put the ultra-high performance concrete mixture into the pumping machine, and use the pumping jacking process to form the pipeline;

[0046] 5) After the pumping is completed, seal the closed grouting port of the mold in time;...

Embodiment 3

[0072] A new method for preparing ultra-high-performance concrete pipelines in the form of reinforcement. The pipeline forming molds used include steel outer molds and hard plastic inner molds. The material of the hard plastic inner molds is polyvinyl chloride, the thickness is 5mm, and the inner diameter of the pipeline is 1000mm. , wall thickness 80mm, including steps:

[0073] 1) Welded steel skeleton, the longitudinal reinforcement of the skeleton remains unchanged, the ring reinforcement 1 is processed into an oval shape, equipped with 16 longitudinal reinforcements, and the distance between the oval ring reinforcement is 240mm;

[0074] 2) Assemble the mold and fix the steel frame, connect the pumping machine with the mold, and check its sealing performance;

[0075] 3) Prepare ultra-high performance concrete mixture;

[0076] 4) Put the ultra-high performance concrete mixture into the pumping machine, and use the pumping jacking process to form the pipeline;

[0077] ...

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Abstract

The invention discloses a preparing method of a novel reinforced bar type ultra-high-performance concrete pipeline. An adopted pipeline forming mold comprises a steel outer mold and an inner mold. The method comprises the following steps that (1) a steel bar framework is welded, a longitudinal bar of the framework is unchanged, and an annular bar is processed into an oval shape; (2) the mold is assembled, a steel bar framework is fixed, a pumping machine is connected with the mold, and the sealing performance is checked; (3) an ultra-high-performance concrete mixture is prepared; (4) the ultra-high-performance concrete mixture is added into the pumping machine, and a pumping jacking process is adopted for forming a pipeline; (5) after the pumping is completed, a closed grouting opening of the mold is sealed in time; (6) a pipeline with the mold is subjected to integral maintenance; (7) the mold is dismounted; (8) hydrothermal maintenance or natural maintenance is carried out after the pipeline mold dismounting. The invention also discloses the novel reinforced bar type ultra-high-performance concrete pipeline. The pipeline annular bar prepared by the method provided by the invention is in an oval shape, so that the strength of a reinforced bar is effectively utilized, and the pipeline strength is improved.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a novel ultra-high-performance concrete pipe in the form of reinforcement and a preparation method thereof. Background technique [0002] In today's water supply and drainage pipeline market, there are generally two kinds of pipelines, one is plastic pipelines and the other is reinforced concrete pipelines. In addition, cast iron pipes and concrete pipes have not been widely used due to obvious defects, and their performance is not as good as that of plastic pipes and reinforced concrete pipes. Plastic pipes have the advantages of small inner wall friction coefficient, convenient construction and strong corrosion resistance. However, plastic pipes also have obvious limitations such as large deformation, insufficient compressive capacity, and high unit cost. Reinforced concrete pipes have the characteristics of high strength and low unit cost, but compared with plas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/08B28B21/56B28B11/24B28B21/86C04B28/00
CPCF16L9/085B28B11/245B28B21/56B28B21/86C04B28/005
Inventor 杨医博刘金涛郑福斌郭文瑛谭志健谭颖垚廖芮郭振海王恒昌蔡铉烨黄鸿浩潘文智冼剑华
Owner SOUTH CHINA UNIV OF TECH
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