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Standard Method of Test for Nonlinear Impact Resonance Acoustic Spectroscopy (NIRAS) for Concrete Specimens with Damage from the Alkali-Silica Reaction (ASR)
| Published by | Publication Date | Number of Pages |
| AASHTO | 2014 | 7 |
AASHTO TP 109 – Standard Method of Test for Nonlinear Impact Resonance Acoustic Spectroscopy (NIRAS) for Concrete Specimens with Damage from the Alkali-Silica Reaction (ASR)
This test method covers determination of material nonlinearity in concrete laboratory specimens prepared in a manner and subjected to conditions of accelerated alkali-reactivity of aggregate.It is assumed that the nonlinearity due to elastic hysteresis is a dominant mechanism for the material nonlinearity in concrete specimens with alkali-silica reaction (ASR) damage and tha tthis nonlinearity is directly proportional to the aSR damage occurring in the specimens.This method may not be necessarily applicable to other forms of damage.
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