A concrete strength monitoring method based on a concrete strength monitoring device

Abstract

The invention discloses a concrete strength monitoring method based on a concrete strength monitoring device. The device and method monitor the initial wave velocity of the concrete when it is not eroded and the concrete wave velocity in different depth ranges under different erosion ages by embedding piezoelectric intelligent aggregates inside the eroded concrete, without the need to chisel concrete samples, etc. The destruction process, and the piezoelectric intelligent aggregate itself is strong enough to be compatible with concrete, so it will not affect the performance of the concrete structure, so that the non-destructive monitoring of the strength of the eroded concrete can be realized; the monitoring method provided by the invention can be real-time non-destructive monitoring Concrete wave velocity, by monitoring the wave velocity at different depths of eroded concrete, and constructing the relationship between wave velocity-dynamic elastic modulus-strength, the compressive strength of the eroded concrete structure in line with the actual engineering can be directly obtained, and then the concrete strength is used as the main index to measure Health monitoring and safety assessment of concrete structures.

Description

technical field [0001] The invention relates to the technical field of health monitoring of concrete structures under sulfate erosion environment, in particular to a concrete strength monitoring method based on a concrete strength monitoring device. Background technique [0002] At present, the degree of deterioration of sulfate eroded concrete is generally determined by macroscopic test indicators such as expansion rate, mass loss rate, dynamic elastic modulus, compressive strength, tensile strength and flexural strength. Although the above indicators obtained by standard tests can be used for The comparison of the sulfate corrosion resistance of different concretes cannot be applied to the safety assessment of sulfate attacked concrete in the actual engineering environment. Because the determination of concrete expansion rate, mass loss, dynamic elastic modulus, compressive strength, flexural strength and tensile strength is carried out in laboratory environment for specif...

AI Technical Summary

Problems solved by technology

However, in the actual engineering application environment, there is no current specification to clarify how to measure specific engineering structures, such as the expansion rate, dynamic elastic modulus, and mass loss of concrete bridge piers that suffer from sulfate erosion in coastal environments. There is no existing technical means to obtain the above-mentioned parameter indicators in line with engineering reality

In addition, if the strength of concrete in the actual environment needs to be sampled and measured, it will cause irreparable damage to the actual engineering structure and cause harm to the engineering structure.

In addition, sulfate-eroded concrete has an uneven nature. From the outside to the inside, the erosion damage gradually weakens. This feature also increases the difficulty of sampling and safety assessment.

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