Construction method for underwater non-dispersible cement-based self-compaction material

A construction method and dense technology, applied in infrastructure engineering, construction, etc., can solve the problems of high pollution and high cost, achieve high flow performance, improve success rate, and improve adaptability

Active Publication Date: 2014-02-05
TSINGHUA UNIV +1
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Problems solved by technology

(2) Underwater chemical grouting can solve the problem of water dispersion through different chemical...

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  • Construction method for underwater non-dispersible cement-based self-compaction material
  • Construction method for underwater non-dispersible cement-based self-compaction material
  • Construction method for underwater non-dispersible cement-based self-compaction material

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Embodiment Construction

[0028] Combine below Figure 1 to Figure 6 , the present invention is further described:

[0029] (1) Formwork 7 is provided for the underwater parts that need to be poured, and there is no need to provide formwork for parts with natural barriers or existing barriers. For underwater structures and structures, there are usually specific shape requirements, and formwork 7 should be set on the outer boundary of the structure. When the shape of the outer boundary of structures and structures is not high, steel gabion 8 or riprap accumulation can be used 9 Set barriers. For the underwater part of the underwater seepage channel and foundation fissure, the formwork cannot be set, and the filling range can be controlled by controlling the flow distance of the concrete material.

[0030] (2) Determine the positions of the cement-based self-compacting material pouring point 5 and the water-soluble polymer solution pouring point 6 according to the underwater parts to be poured. The pou...

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Abstract

The invention relates to a construction method for an underwater non-dispersible cement-based self-compaction material. The construction method includes that (1) an underwater pouring position is determined; (2) a cement-based self-compaction material pouring point and a water-soluble high-molecular polymer solution perfusion point are respectively set and definitely communicated with the underwater pouring position; (3) water-soluble high-molecular polymers are dissolved in water to form a water-soluble high-molecular polymer solution, the water-soluble high-molecular polymer solution is poured into the underwater pouring position through the water-soluble high-molecular polymer solution perfusion point, the water-soluble high-molecular polymers are dissolved in water so as to change physical properties of water, and the cement-based self-compaction material is enabled to enter the water-soluble high-molecular polymer solution and can not be dispersed; (4) the cement-based self-compaction material is poured into water through the cement-based self-compaction material pouring point and tightly and fully filled in the underwater pouring position by the aid of self weight of the cement-based self-compaction material to finally form underwater non-dispersible concrete.

Description

technical field [0001] The invention relates to a construction method of an underwater non-dispersible cement-based self-compacting material, in particular to a construction method in an underwater environment under conditions of different sizes, shapes and flow velocities. Background technique [0002] Since the Underwater Non-Dispersible Concrete (NDC) technology was introduced into my country in the 1980s, its application technology has been continuously developed and improved. Underwater non-dispersible concrete, also known as underwater pouring concrete, is a special concrete that can be poured underwater and will not separate aggregates and cement slurry under the action of water like ordinary concrete. At present, it is mainly used in the construction of underwater large-volume concrete in the fields of water conservancy, ocean, petrochemical, coal and other engineering fields, and its application range covers many provinces and cities across the country. Such as: Qi...

Claims

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Application Information

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IPC IPC(8): E02D15/06
Inventor 周虎金峰安雪晖梁寅鹏
Owner TSINGHUA UNIV
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