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Construction method for underwater non-dispersing self compact concrete

A technology of self-compacting concrete and construction method, which is applied in the direction of basic structure engineering, construction, etc., can solve the problems of concrete strength not meeting the design requirements, segregation, etc., reduce the risk of unsuccessful back sealing, simple construction operation, and ensure integrity Effect

Inactive Publication Date: 2019-05-17
CHINA RAILWAY GUANGZHOU ENG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application of self-compacting concrete is more and more extensive, but there is no technology for using self-compacting concrete underwater, and segregation is very easy to occur during the flow of underwater self-compacting concrete, resulting in the concrete strength not meeting the design requirements

Method used

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  • Construction method for underwater non-dispersing self compact concrete
  • Construction method for underwater non-dispersing self compact concrete
  • Construction method for underwater non-dispersing self compact concrete

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Embodiment Construction

[0020] refer to Figure 1 to Figure 3 , the present invention is a kind of underwater non-dispersive self-compacting concrete construction method, and it comprises the following steps:

[0021] S1: Set up the site. Specifically, during underwater foundation construction, a pit is dug for drainage, and a cofferdam 1 is built around the foundation pit as a temporary water retaining facility. The cofferdam 1 circles around the foundation pit, including a closed circle formed by a square in the middle and a semicircle at both ends. There is a trestle bridge with a width of 6m near the cofferdam 1 as a traffic bridge, and there is a self-built mixing station 200m away from the opposite bank of the river, and two sets of 3m 3 Compulsory mixing building, 6 sets 8m 3 Concrete tank truck 5, concrete tank truck 5 can move on cofferdam 1. 2 sets of concrete pumps, 4 conduits, the underwater non-dispersible self-compacting concrete passes through the conduits, and is poured by its own...

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Abstract

The invention discloses a construction method for underwater non-dispersing self compact concrete. Poured and bottom-sealed concrete formed by inputting an underwater protecting agent into a water body and preparing pouring concrete is good in flowability, a construction process is high in technical content, and a construction operation is simple. The concrete can be bottom-sealed and formed primarily and is water-tight. The construction process is safe and reliable, the construction workload is reduced, the risk of unsuccessful bottom sealing is reduced, the integrity of the concrete is guaranteed and a construction period is conducted smoothly. Compared with self compact concrete, the underwater non-dispersing self compact concrete has obvious advantages on the aspect of underwater construction and can ensure the underwater pouring quality of the concrete, the bottom-sealing effect reaches a predicted target, and various potential safety hazards probably induced by bottom sealing defects are reduced. The construction method is applied to the field of concrete construction.

Description

[0001] The invention relates to the field of concrete construction, in particular to an underwater non-dispersive self-compacting concrete construction method. Background technique [0002] Self-compacting concrete refers to the concrete that can flow and compact under its own gravity, and can completely fill the formwork even if there are dense steel bars, and at the same time obtain good homogeneity and do not require additional vibration. In actual construction, self-compacting concrete eliminates the vibration noise when pouring concrete, improves the construction speed and quality, and realizes labor-saving concrete pouring; in order to improve and solve over-dense reinforcement, thin walls, complex shapes, and large volumes , Steel tube concrete construction, high, deep, fast construction, underwater construction, and engineering construction conditions with special requirements and difficult vibration have brought great convenience. [0003] Self-compacting concrete was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D15/06
Inventor 周晓邓刚谢周余陈永光陈孝松曹科邓晓峰叶晓春陈来林韦高飞
Owner CHINA RAILWAY GUANGZHOU ENG GRP CO LTD
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