Modified fiber concrete tubular pile and preparation method thereof

Abstract

The invention discloses a modified fiber concrete tubular pile. The modified fiber concrete tubular pile comprises, by weight, 0.1-0.2 parts of dimethylolpropionic acid, 7-10 parts of n-methylpyrrolidone, 10-20 parts of bone black, 500-640 parts of ordinary portland cement, 300-400 parts of yellow sand, 200-300 parts of broken stone, 7-15 parts of a polycarboxylic acid water reducer, 16-20 parts of polyethylene wax, 0.1-0.2 parts of dibenzoyl peroxide, 5-6 parts of maleic anhydride, 2-3 parts of methoxy polyethylene glycol, 4-7 parts of ethyl cellulose, 0.7-2 parts of sp-80, 50-70 parts of waste and old rubber powder, 0.1-0.2 parts of triethylamine and 2-3 parts of an IPDI trimer. The modified fiber concrete tubular pile further improves carbon dioxide intrusion inhibition, reduces harmful aperture and defect contents of a concrete structure, reduces hydration product alkalescence and promotes conversion of a low strength hydration product into a high strength hydration product.

Description

technical field [0001] The invention relates to a modified fiber concrete pipe pile, in particular to a modified fiber 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 ...

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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;