Manufacturing method of carbon fiber cloth pre-constrained ultra-high performance concrete column

Abstract

The invention discloses a manufacturing method of a carbon fiber cloth pre-constrained ultra-high performance concrete column and belongs to the field of building structures. A carbon fiber cloth is used to make a closed cylindrical drum, and a filler hole and an inflation hole are formed in one circular surface of the closed cylindrical drum; the filler hole is sealed and the closed cylindrical drum is filled with compressed air through the inflation hole to form an upright and plump cavity cylinder; the cylinder is filled with reactive powder concrete (RPC) through the filler hole till the cylinder is full of the RPC, and the RPC is vibrated and compacted to form a RPC column; certain pressure is applied on the upper and lower bottom faces of the RPC column; the RPC column is maintained through steam at a certain temperature to a suitable time; the pressure is removed, steam maintenance is stopped, and the RPC column is subjected to concrete standard maintenance to form a finished column; and a fireproof coating is smeared on the side wall of the finished column, the carbon fiber cloth fully reaches the strength when the RPC reaches the limiting strain, and the strength is fully utilized at the time of structural failure.

Description

technical field [0001] The invention belongs to the field of building structure reinforcement, and in particular relates to a method for manufacturing a carbon fiber cloth pre-constrained ultra-high performance concrete column. Background technique [0002] In the building structure, the column is an important force bearing component of the building, used to support the beam, truss, floor, etc., and the column of the reinforced concrete structure is the most widely used in many buildings. However, due to the limited bearing capacity, ductility and seismic performance of reinforced concrete columns, after continuous research, steel pipe concrete has evolved and developed on the basis of rigid reinforced concrete and spiral reinforced concrete, and has been used in civil engineering engineering. Nearly a hundred years of history. However, the performance of concrete in steel pipe concrete is the key to its whole. As modern construction projects have higher and higher requirem...

AI Technical Summary

Problems solved by technology

However, if the carbon fiber cloth is not pre-stretched, the carbon fiber cloth does not reach sufficient strength when the reactive powder concrete reaches the ultimate strain, so the two are not fully utilized.

Through literature search, relevant institutions and many scholars at home and abroad have conducted a lot of research on the two materials of carbon fiber cloth and RPC, but there is no research on the combination of the two to make a pre-confined RPC column.

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