Application of Dynamic Elastic Modulus Targeted Testing Methods for Old Concrete Aqueducts

Aimed at the widespread concrete durability deterioration problem among old irrigation aqueducts in China, the main purpose of this study is to propose two dynamic elastic modulus ( E d ) targeted concrete quality evaluation methods as major supplements to the conventional inspection approaches main...

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Bibliographic Details
Published in:Strength of materials 2023-05, Vol.55 (3), p.642-652
Main Authors: Lu, X. B., Li, X. L., Xiao, J., Li, M.
Format: Article
Language:English
Subjects:
Aqueducts
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Concrete
Dynamic tests
Inspection
Materials Science
Methods
Modal analysis
P waves
Quality assessment
Solid Mechanics
Storage modulus
Structural members
Wave propagation
Wave velocity
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Summary:Aimed at the widespread concrete durability deterioration problem among old irrigation aqueducts in China, the main purpose of this study is to propose two dynamic elastic modulus ( E d ) targeted concrete quality evaluation methods as major supplements to the conventional inspection approaches mainly based on testing strength. First, with large pulse energy, the elastic impact wave can penetrate through the whole length of a large-dimension structural member to get the P-wave velocity and then E d in its entirety. Second, the in-situ dynamic testing combined with FE modal analysis can reasonably estimate the average E d of the whole structure. These two methods can be applied in coordination to improve the reliability of the test results.
ISSN:0039-2316
1573-9325
DOI:10.1007/s11223-023-00555-y