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Steel fiber composite bar (SFCB) and engineered cementitious composite (ECC)-concrete composite column/ pier and preparation method thereof

A continuous fiber and concrete technology, applied in columns, bridges, piers and other directions, can solve the problems of insufficient structural durability, easy rust, bearing capacity degradation, etc., to achieve slow strength decline, strong corrosion resistance, improved bearing capacity and The effect of durability

Active Publication Date: 2017-12-08
YANGZHOU UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] Aiming at the problems of common reinforced concrete columns / piers being easily corroded, bearing capacity degraded, and structural durability insufficient under the action of seawater, the present invention provides a steel-continuous fiber composite bar ECC-concrete composite column / pier and a preparation method thereof, aiming at Improve column / pier bearing capacity and structural durability

Method used

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  • Steel fiber composite bar (SFCB) and engineered cementitious composite (ECC)-concrete composite column/ pier and preparation method thereof
  • Steel fiber composite bar (SFCB) and engineered cementitious composite (ECC)-concrete composite column/ pier and preparation method thereof
  • Steel fiber composite bar (SFCB) and engineered cementitious composite (ECC)-concrete composite column/ pier and preparation method thereof

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Embodiment Construction

[0031]In the present invention, the steel-continuous fiber composite bar ECC-concrete composite column / pier includes ordinary concrete (1), engineering cement-based composite material ECC (2), and SFCB (3), wherein the SFCB is arranged on the engineering cement-based composite Material ECC layer, ECC column. In addition, other reinforcements should be properly arranged in the column according to the actual situation of the load borne by the structure.

[0032] The present invention will be described in detail below in conjunction with specific embodiments.

[0033] The weight ratio of each component of the cement-based composite material ECC for engineering is: cement: silica fume: fly ash: water: quartz sand: water reducer = (0.25~0.35): (0.12~0.15): (0~0.35) :(0.15~0.20):(0.2~0.3): (0.002~0.012). The fiber is polyethylene (PE) fiber, the volume content is 2.0%, the cement is P.O.42.5 cement, and the quartz sand is 100-200 mesh quartz sand.

[0034] The preparation method ...

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Abstract

The invention discloses a steel fiber composite bar (SFCB) and engineered cementitious composite (ECC) concrete composite column / pier and a preparation method thereof and belongs to the technical field of building structures. On the basis of a common reinforced concrete structure, a SFCB is used for replacing a steel bar likely to be corroded, meanwhile, an ECC with excellent crack deformation resistant capability, small cracks, high tension and compression resistant capability and high corrosion resistant capability is introduced, and a concrete column is designed in sectioned and layered modes. The section within the range of the section height h to a bottom column of the column / pier is the complete ECC section, the section of the part with the height being larger than the section height h to the bottom column of the column / pier is the ECC-concrete composite section, and common concrete is arranged inside the column. An interface area does not need the particular treatment technology. By comprehensively utilizing the corrosion resistant capability of the SFCB and the excellent compression resistant and erosion resistant capability of the ECC, the SFCB and ECC-concrete composite column / pier with high bearing capability and good durable performance is formed.

Description

technical field [0001] The invention relates to a structure and material of a building component, in particular to a steel-continuous fiber composite bar ECC-concrete composite column / pier and a preparation method thereof, belonging to the technical field of building structures. Background technique [0002] The durability of reinforced concrete structures has always been an important research topic in the field of civil engineering. The problem of steel bar corrosion in reinforced concrete structures is very prominent. Many buildings and bridges are destroyed in advance due to steel bar corrosion, resulting in huge economic losses. For near-coastal projects, reinforced concrete columns / piers are prone to corrosion under the action of seawater, and the durability of the structure is degraded. [0003] Steel-continuous fiber composite bar (Steel Fiber Composite Bar, referred to as SFCB) is a new type of reinforced composite material with steel bars as the inner core and long...

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Application Information

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IPC IPC(8): E01D19/02E04C3/34C04B28/04
CPCC04B28/04C04B2111/24E01D19/02E04C3/34C04B14/06C04B18/146C04B18/08C04B16/0641C04B2103/302C04B22/002C04B32/02Y02A30/30
Inventor 葛文杰蔡陈季翔
Owner YANGZHOU UNIV
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