Recommendation of RILEM TC 269-IAM: damage assessment in consideration of repair/retrofit-recovery in concrete and masonry structures by means of innovative NDT
IF 3.4 3区 工程技术Q2 CONSTRUCTION & BUILDING TECHNOLOGY
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Abstract
This recommendation specifies a method for measuring passive elastic waves and assessing damage to concrete members such as decks and girders. To visualize internal damage, acoustic emissions (AE) and elastic wave velocity are employed. Firstly, based on the data detected by AE sensors, the location of the AE sources is estimated. Then, the velocity distribution in the concrete is evaluated. Accordingly, the internal damage of concrete deck can be evaluated quantitatively by applying a simple procedure using two evaluation axes, which are AE source density and elastic wave velocity in the concrete. Thus, the local deterioration of the concrete member can be classified into several stages that represent the damage levels of internal defects.
期刊介绍：
Materials and Structures, the flagship publication of the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), provides a unique international and interdisciplinary forum for new research findings on the performance of construction materials. A leader in cutting-edge research, the journal is dedicated to the publication of high quality papers examining the fundamental properties of building materials, their characterization and processing techniques, modeling, standardization of test methods, and the application of research results in building and civil engineering. Materials and Structures also publishes comprehensive reports prepared by the RILEM’s technical committees.
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