Titlebook: Diagnosis & Prognosis of AAR Affected Structures; State-of-the-Art Rep Victor E. Saouma Book 2021 RILEM 2021 Concrete Structures.Alkali Sil

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Diagnosis & Prognosis of AAR Affected Structures978-3-030-44014-5Series ISSN 2213-204X Series E-ISSN 2213-2031

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Axel Groenemeyer,Melanie Ratzkas are used to determine the advancement of the different classes of aggregate sizes used in the structure. Residual expansion is evaluated from inverse analysis of data available on the damaged structure (displacements, cracking measurements).

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Introduction to Diagnosisoccurs. Then the concrete starts to expand and cracks develop, often in a linear way, and can eventually damage the structure (NB slight cracking and signs of AAR are usually insufficient to “damage” the serviceability or safety of a structure).

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Assessment of Damage and Expansionalong pre-drawn lines, Fig. . and is expressed as crack-width per measured length. However, it has to be kept in mind that the formation of the cracks may not be attributable solely to AAR. Still, the crack index indicates a concrete expansion at the studied location in mm/m.

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Monitoring of Dams Suffering from ASR at the Bureau of Reclamationations, instrumentation data recorded in the field, and laboratory concrete testing results combined with structural analyses results are key factors in understanding the past behavior of a dam, as well as assessing the structural integrity of a dam given the current conditions.

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Rolf G. Heinze,Johannes BauerdickThis part of the document discusses a number of techniques used to quantify the in concrete affected by alkali-aggregate reaction (AAR). The principal points of each technique (similarities and differences) are presented and an overall discussion is addressed.