Seawater corrosion-resistant reinforced concrete structure, construction structure and construction method

Abstract

The invention discloses a seawater corrosion-resistant reinforced concrete structure, a seawater corrosion-resistant reinforced concrete construction structure and a seawater corrosion-resistant reinforced concrete construction method, and relates to the field of coastal reinforced concrete structures. The seawater corrosion-resistant reinforced concrete structure comprises an ordinary reinforcedconcrete layer, wherein a removal-free metal framework is arranged outside the peripheral side surface of the ordinary reinforced concrete layer; a ultrahigh-performance concrete layer is positioned on the outer side surface of the removal-free metal framework and at the bottom end and the top end of the ordinary concrete layer; the ordinary reinforced concrete layer bears the load on the structure, and the ultrahigh-performance concrete layer resists erosion of chlorine ions in seawater, so that the seawater corrosion resistance of the structure can be improved and the service life of the structure can be prolonged. The reinforced concrete construction structure is convenient for quickly pouring the reinforced concrete structure. By the reinforced concrete construction method, the spacingbetween the removable-free metal framework and a reinforcement cage is guaranteed by cushioning cushion blocks for fixing the position of the removal-free metal framework, and pouring of the reinforced concrete structure can be quickly achieved through layer-by-layer pouring, so that the construction period is shortened.

Description

technical field [0001] The invention relates to the field of coastal reinforced concrete structures, in particular to a reinforced concrete structure resistant to seawater corrosion, and further provides a reinforced concrete construction structure resistant to seawater corrosion, and further provides a reinforced concrete construction method resistant to seawater corrosion. Background technique [0002] Reinforced concrete structures are widely used in coastal engineering construction because they combine the advantages of high compressive strength of concrete, high tensile strength of steel bars, and good adhesion between steel bars and concrete. However, because the chloride ions in the seawater can enter the interior of the concrete through the tiny pores of the concrete, and react with alkaline substances such as calcium hydroxide in the concrete, the pH value in the concrete will gradually decrease to below 9, resulting in the deterioration of the surface of the steel b...

AI Technical Summary

Problems solved by technology

In recent years, an ultra-high-performance cement-based material developed at home and abroad - ultra-high performance concrete (UHPC for short), has ultra-high strength and durability, its compressive strength reaches 150MPa, its impermeability exceeds P30, and its electric flux is lower than 40C, the sulfate resistance grade exceeds KS150, and the frost resistance grade exceeds F500. Its working life may reach 200 years. It has begun to be applied in marine environmental engineering, but its cost is high, and the unit price is 5 to 10 times that of ordinary concrete. Promotion and application are restricted

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