Study on Defects Detection for Grouted Sleeve Connector of Prefabricated Building with Impact Echo Method
Publication: ICCREM 2023
ABSTRACT
The stressed reinforcement in prefabricated concrete structures is generally connected by grouted sleeve, thus the quality of grouting in the sleeve will directly affect the seismic and mechanical performance of buildings. Since the grouted sleeve is located inside the component, and the defects can only be detected with nondestructive testing techniques. Although the prefabricated concrete structure is being popularized and applied, there is still a lack of effective nondestructive testing technology. It is particularly urgent to develop effective nondestructive testing methods to detect the grouting defects in steel sleeve. In this paper, the feasibility of impact echo method in detecting the defects of grouted sleeve is studied. High order finite element numerical simulations are carried out and waveform signals are analysed with maximum entropy method (MEM) method. Three types of grouting defect models are studied to compare with the one without defects. And the results demonstrated the feasibility and limitation of the impact echo method.
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REFERENCES
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Information & Authors
Information
Published In
ICCREM 2023
Pages: 1165 - 1170
History
Published online: Nov 30, 2023
ASCE Technical Topics:
- Concrete
- Construction engineering
- Construction industry
- Construction management
- Construction methods
- Defects and imperfections
- Detection methods
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Entropy methods
- Field tests
- Finite element method
- Grouting
- Materials characterization
- Materials engineering
- Methodology (by type)
- Nondestructive tests
- Numerical methods
- Offsite construction
- Tests (by type)
- Thermodynamics
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