A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Evaluation of residual reactivity of concrete cores from ASR-affected structures by non-destructive tests
The alkali-silica reaction (ASR) is a deleterious reaction affecting numerous concrete structures worldwide. The effect of ASR on durability of a concrete structure could be very severe and weaken its strength, stiffness, serviceability, safety and stability. This study provides an overview of a research on ASR affecting two concretes locks. The procedure aims at estimating the future expansion of concrete structures, as well as the amount of potential damage. The methods used in the laboratory for the assessment of ASR in concretes are: residual expansion tests in NaOH, ultrasonic pulse velocity (UPV) and resonance frequency measurements. No unique relationships were obtained between the expansion due to ASR and the results of NDT. The resonance frequency appears to be a valuable method for assessing ASR damage in concrete. Such test methods guarantee the use of NDT methods to identify and characterize the evolution of the ASR on concrete structures.
Evaluation of residual reactivity of concrete cores from ASR-affected structures by non-destructive tests
The alkali-silica reaction (ASR) is a deleterious reaction affecting numerous concrete structures worldwide. The effect of ASR on durability of a concrete structure could be very severe and weaken its strength, stiffness, serviceability, safety and stability. This study provides an overview of a research on ASR affecting two concretes locks. The procedure aims at estimating the future expansion of concrete structures, as well as the amount of potential damage. The methods used in the laboratory for the assessment of ASR in concretes are: residual expansion tests in NaOH, ultrasonic pulse velocity (UPV) and resonance frequency measurements. No unique relationships were obtained between the expansion due to ASR and the results of NDT. The resonance frequency appears to be a valuable method for assessing ASR damage in concrete. Such test methods guarantee the use of NDT methods to identify and characterize the evolution of the ASR on concrete structures.
Evaluation of residual reactivity of concrete cores from ASR-affected structures by non-destructive tests
Evaluation der Restaktivität von Betonkernen aus Alkali-Silica-Reaktion beeinflussten Strukturen mittels zerstörungsfreier Prüfungen
Sargolzahi, Maryam (author) / Rivard, Patrice (author) / Rhazi, Jamal (author)
2009
6 Seiten, 3 Bilder, 2 Tabellen, 7 Quellen
(nicht paginiert)
Conference paper
Storage medium
English
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