Nano-filler concrete tubular pile and preparation method therefor

Abstract

The invention discloses a nano-filler concrete tubular pile. According to the nano-filler concrete tubular pile, through doping ethoxylated rubber fibers, the internal pore structure of concrete can be effectively improved, and a large number of closed pores are formed, so that capillary pores are prevented from forming a continuous and perforated meshed structural system, an anti-carbonization zone is formed, and a further reinforcing effect on inhibition of intrusion of carbon dioxide is exerted; in addition, the nano-filler concrete tubular pile has the advantages that the content of harmful pores and defects in a concrete structure can be reduced, the alkalinity of hydration products is lowered, and the transformation of low-strength hydration products to high-strength hydration products is prompted.

Description

technical field [0001] The invention relates to a nano-filled concrete pipe pile, in particular to a nano-filled concrete pipe pile and a preparation method thereof. Background technique [0002] Concrete structure is one of the most widely used structures. About 70% of the house construction and 50% of bridge structures in China use concrete structures. With the increase of the service time of these engineering structures, the durability damage of concrete materials and structures is becoming more and more serious. The more attention is paid, many engineering structures often cause functional degradation or even structural damage due to durability, which brings unnecessary losses to society. Concrete carbonation is one of the important durability indicators of concrete. Due to carbon dioxide in the atmosphere and concrete The reaction of alkaline substances in the concrete makes the concrete appear neutral, which is called the carbonization of concrete. Carbonization makes ...

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Problems solved by technology

[0002] Concrete structure is one of the most widely used structures. About 70% of the housing construction and 50% of bridge structures in China use concrete structures. With the increase of the service time of these engineering structures, the durability damage of concrete materials and structures is becoming more and more serious. The more attention is paid, many engineering structures often cause functional degradation or even structural damage due to durability, which brings unnecessary losses to society. Concrete carbonation is one of the important durability indicators of concrete. Due to carbon dioxide in the atmosphere and concrete The reaction of the alkaline substances in the concrete makes the concrete appear neutral, which is called the carbonization of the concrete. Carbonization makes the steel bars in the concrete structure lose the protection of the passivation film, which easily makes the steel bars rust, and then destroys the structure. With the continuous advancement of the industrialization process, the emission of carbon dioxide has increased greatly, which has a negative impact on the durability of concrete structures while producing the greenhouse effect;