Sea-sand concrete member and manufacturing method thereof

Abstract

The invention relates to a sea-sand concrete member comprising a base body (10) made of a hollow steel pipe. The sea sand concrete member is characterized in that the inner wall of the base body (10) is provided with a protective layer (20); sea-sand concrete (30) made of non-desalted sea sands is poured into the protective layer (20); and the protective layer (20) is made of fiber reinforced composite plastic materials and is used for preventing the sea-sand concrete (30) made of the non-desalted sea sands from corroding the base body (10). The sea-sand concrete member can directly utilizes the sea sands without desalting the sea sands. The invention has convenient construction, can effectively utilize the sea sands, not only solves the problem that standard sandstone resources is generally deficient in coastal areas, but also prevents the extraction replenishment of long-distance sandstone materials, and is beneficial to saving the energy and protecting the ecological environment.

Description

technical field [0001] The invention relates to building materials, in particular to an application component and a manufacturing method of natural sea sand in building components. Background technique [0002] Steel pipe or FRP pipe concrete columns can be used in many industries, such as metallurgical industry, electric power industry, shipbuilding industry, machinery manufacturing industry and industrial or civil buildings, etc. Concrete columns, single-story or multi-story industrial plants, high-rise or super high-rise civil buildings, highways and urban arch bridges and other structures. [0003] For ordinary hollow concrete-filled steel tube members, if sea sand is directly applied, the chloride ions in the sea sand will corrode the steel pipe and affect the overall durability of the member. This method limits the direct application of sea sand. For FRP pipe concrete, although the corrosion problem of chloride ions is solved, sea sand can be directly applied, but due...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a sea sand application method and a method for manufacturing hollow concrete-filled steel pipe members with sea-sand concrete poured into the core. Since a protective layer is set on the inner wall of the hollow steel pipe, and then sea-sand concrete is poured into the protective layer of the hollow steel pipe, the existing solution is solved. Chloride ions in sea sand will corrode hollow steel pipes or concrete is brittle and swollen, etc.

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