Abstract
Based on the existed research and analysis methods of air entraining natural pumice concrete freeze-thaw damage, nuclear magnetic resonance (NMR) detection technique was introduced in the present study. From the research of essence of freeze-thaw coupling-induced concrete damage in saline solution, natural pumice concrete porosity and transversal relaxation time T2 spectral parameters were used as criteria, and nuclear magnetic resonance imaging (NMRI) technology, an intuitive method was used to determine freeze-thaw damage quantitatively.
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