Support pile capable of improving corrosion resistance and construction technology thereof

Abstract

The invention relates to a construction technology of a support pile capable of improving corrosion resistance, and belongs to the field of support piles. The support pile comprises a steel reinforcement cage and a concrete mixture poured into the steel reinforcement cage, and the surface of the steel reinforcement cage is coated with corrosion-resistant paint. The corrosion-resistant paint is prepared from the following raw materials in parts by mass: water, ammonium heptamolybdate, 2-amino-5-nitropyridine and benzotriazole. A concrete mixture is prepared from the following raw materials in parts by mass: water, cement, fly ash, fine aggregate, coarse aggregate, sodium methyl silicate and polyphosphate. The construction technology comprises the following steps of material preparation, pile position measurement, hole forming, reinforcement cage hanging and placing, underwater concrete pouring and support pile maintenance. The support pile constructed by the method has excellent corrosion resistance, and the construction process is beneficial for the support pile to form a more compact structure.

Description

technical field [0001] The invention relates to the field of support piles, in particular to a support pile with improved anti-corrosion performance and its construction technology Background technique [0002] Support pile is a kind of pile used to assist engineering operations. Before excavating the foundation pit, it is necessary to build support piles on the edge of the foundation pit. The support piles can withstand the horizontal lateral pressure of soil and rock. [0003] As a guarantee of construction safety in the foundation pit and building safety, the supporting piles must have sufficient mechanical properties, so most of the supporting piles are reinforced concrete structures. Although the reinforced concrete structures are stable, in the humid environment of underground soil, the Moisture and some salt ions easily penetrate into the steel skeleton through the tiny gaps in the internal structure of the concrete, causing chemical corrosion on the surface of the st...

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Problems solved by technology

[0003] As a guarantee of construction safety in the foundation pit and building safety, the supporting piles must have sufficient mechanical properties, so most of the supporting piles are reinforced concrete structures. Although the reinforced concrete structures are stable, in the humid environment of underground soil, the Moisture and some salt ions easily penetrate into the steel skeleton through the tiny gaps in the internal structure of the concrete, causing chemical corrosion on the surface of the steel bar, and after infiltrating water, a corrosion micro-battery is formed in the concrete, causing electrochemical corrosion between the interface between the concrete and the steel bar. Chemical corrosion and electrochemical corrosion seriously damage the reinforced concrete structure, resulting in a decline in the durability of the support piles

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