Energy storage protection type cement-based micro-change monitoring coating for existing building strain monitoring and cement-based sensor

Abstract

The invention discloses an energy storage protection type cement-based micro-change monitoring coating for existing building strain monitoring and a cement-based sensor, the coating comprises a positive electrode coating, an electrolyte and a negative electrode coating which are arranged in sequence, the positive electrode coating comprises 5-50% of water-borne epoxy resin, 20-80% of cement, 1-10% of positive electrode filler, 1-20% of conductive filler and 10-50% of water; the electrolyte coating comprises 5-50% of water-borne epoxy resin, 20-70% of cement, 10-30% of inorganic base, 1-20% of conductive filler and 10-40% of water; the negative electrode coating comprises 5-50% of water-borne epoxy resin, 20-80% of cement, 1-10% of negative electrode filler, 1-20% of conductive filler and 10-50% of water; the three coatings form a primary battery which can be charged through a charging device to store energy and protect the material of the positive electrode; the coating is high in signal-to-noise ratio of a detection signal, and can endure overcharge, discharge, short circuit and overheating service; and the adhesive has strong adhesion to a matrix and good durability.

Description

technical field [0001] The invention belongs to the technical field of semiconductor devices, and in particular relates to an energy storage protective cement-based micro-change monitoring coating and a cement-based sensor for strain monitoring of existing buildings. Background technique [0002] Concrete structure health monitoring helps to detect and investigate the early failure of concrete, and is crucial to ensure the safe service of large infrastructure such as bridge and tunnel structures and the prevention and control of major geological disasters. In recent years, a variety of stress and strain sensing monitoring systems based on piezoelectric, piezoresistive, magnetoresistive, optical and acoustic effects have been launched one after another. By embedding sensors in concrete structures, long-term monitoring of structural strain has been initially realized. Among them, the piezoresistive sensor is not affected by external disturbance signals such as static charges a...

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Problems solved by technology

[0006] The object of the present invention is to provide an energy storage protection type cement-based micro-variable monitoring coating and cement-based sensor for health monitoring of existing buildings to solve The current cement-based sensors need to be pre-embedded and installed, require continuous external power supply, cannot provide protection for the steel bars in the building, have low bond strength with the substrate, and have a narrow detection range. It is impossible to achieve strain monitoring for existing special-shaped structures.

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