Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 319, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2021.126097
Keywords
LF-NMR; Freeze-thaw cycle; Deterioration of pore structure; Durability of concrete; Nondestructive testing; Service life prediction
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This study analyzed the deterioration process of mortar with different water-cement ratios and compared the performances of mortar with and without air voids. The results established a system to predict the residual life of mortar exposed rapid freeze-thaw cycles by determining the relationship between freeze-thaw damage and pore structure deterioration.
This study analyzes the deterioration process of mortar with three different water-cement ratios and compares the performances of mortar with and without air voids. The mass loss and relative dynamic elastic modulus of the specimens are the criteria for the macroscopic evaluation of freeze-thaw damage. Experimental methods combined rapid freeze-thaw testing, ultrasonic sound velocity, and low-field nuclear magnetic resonance (LF-NMR). The complete deterioration of mortar specimens is observed in detail to determine the relationship between freeze-thaw damage and pore structure deterioration. Results established a system to predict the residual life of mortar exposed rapid freeze-thaw cycles.
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