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An electrochemical method for repairing and strengthening deteriorated concrete

A concrete and electrochemical technology, applied in scientific instruments, instruments, measuring devices, etc., to achieve the effect of simplifying mathematical processing

Active Publication Date: 2021-02-19
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this field, there is a lack of methods based on electrochemical impedance spectroscopy and electrochemical methods to achieve intelligent control in the process of concrete repair and reinforcement

Method used

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  • An electrochemical method for repairing and strengthening deteriorated concrete
  • An electrochemical method for repairing and strengthening deteriorated concrete
  • An electrochemical method for repairing and strengthening deteriorated concrete

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Embodiment Construction

[0027] like figure 1 As shown, a conventional battery potential measurement method in the art measures the electrode potentials of different parts of the steel bar. The greater the potential difference, the faster the corrosion rate. like figure 2 As shown, a conventional electrochemical repair method in the art is a non-destructive repair technology in which chloride salts in reinforced concrete are discharged under the action of an external electric field, and the steel bars are re-passivated.

[0028] In Example 1, the repair and reinforcement of this example takes a self-made sample as an example. The invention provides an electrochemical method for repairing and strengthening degraded concrete, and repairing and strengthening deteriorating concrete through a deteriorating concrete repairing and strengthening system, comprising the following steps:

[0029] Step (1), measure the electrochemical impedance spectrum by collecting the deteriorated concrete sample, or measur...

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Abstract

The invention discloses an electrochemical method for degraded concrete repairing and strengthening. An equivalent circuit is provided for reinforced concrete impedance curve fitting, during measurement, a double-electrode system is adopted, and electrochemical impedance measuring is conducted on the reinforced concrete with different coverage thicknesses. According to measurement of the impedancein the low-frequency range, the medium-frequency range and the high-frequency range, water distribution and hole distribution factors in a degraded concrete structure, factors of rusting of steel bars in the concrete and steel bar / concrete interface factors are analyzed, the factors and various collected data curve parameters are guided into an intelligent regulation and control module, the regulation and control module adjusts current and voltage in the degraded concrete repairing and strengthening process, and intelligent control in the degraded concrete repairing and strengthening processis achieved.

Description

technical field [0001] The invention belongs to the technical field of concrete electroosmosis, and in particular relates to an electrochemical method for repairing and strengthening deteriorated concrete. Background technique [0002] Concrete is an artificial stone made of cement, water and aggregates (fine aggregates such as sand, coarse aggregates such as pebbles, crushed stones) and other raw materials, which are poured into molds after mixing, and then cured and hardened. Concrete structure refers to the structure mainly made of concrete, including plain concrete structure, reinforced concrete structure and prestressed concrete structure. With the rapid and continuous development of modern concrete technology and my country's economy, concrete is widely used in the construction of modern projects such as ports, dams, highways, bridges, and municipalities. However, reinforced concrete structures are subject to various environmental conditions, such as physical or chemi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N17/02
Inventor 王档良赵方彬彭裕勤
Owner CHINA UNIV OF MINING & TECH
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