Polyurea rebar self-protection anti-corrosion concrete block

Abstract

The invention relates to the field of civil engineering, in particular to a polyurea reinforced self-protection anti-corrosion concrete block, which includes steel bars and concrete, the outer layer of the steel bar has a polyurea protective layer, and the polyurea self-protection anti-corrosion concrete There may be a through hole in the block, and the cross section of the through hole may be circular, square, or triangular. The block may have an outrigger on the left side and an inner groove on the right side. The invention has the advantages of strong material corrosion resistance, fast and convenient construction operation, aging resistance, non-toxic and pollution-free construction and use, no potential safety hazards, safe and convenient installation and use, labor-saving, labor-saving, time-saving and economical advantages, and It can improve the fit and reduce the amount of cement, especially in the field of civil engineering.

Description

Technical field [0001] The invention relates to the field of civil engineering and construction, in particular to a polyurea steel self-protection anti-corrosion concrete block. Background technique [0002] Reinforced concrete structure combines the advantages of steel and concrete, has a low cost, and has a wide range of applications in civil engineering. In reinforced concrete structures, steel corrosion is one of the main reasons for premature failure of reinforced concrete structures. Fresh concrete is alkaline, and its PH value is generally greater than 12.5. In this alkaline environment, the steel bars are prone to passivation, causing a passivation film on the surface of the steel bars, which can prevent the corrosion of the steel bars in the concrete. However, when harmful substances such as carbon dioxide, water vapor, and chloride ions enter the interior of the concrete through the pores from the surface of the concrete, they neutralize with the alkaline substances in...

AI Technical Summary

Problems solved by technology

However, when harmful substances such as carbon dioxide, water vapor, and chloride ions enter the interior of the concrete through the pores from the surface of the concrete, they neutralize the alkaline substances in the concrete material, resulting in a decrease in the pH value of the concrete, and the pH value is less than 9. The passivation film on the surface of the steel bar will be gradually destroyed, and the steel bar will be corroded, and as the corrosion intensifies, it will cause the concrete protective layer to crack, the bond between the steel bar and the concrete will be destroyed, the stressed section of the steel bar will be reduced, and the structural strength will be reduced. reduction, etc., resulting in a reduction in the durability of the structure

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