Title:
Deterioration of Concrete in Brine Storage Tanks
Author(s):
Inge Lyse
Publication:
Journal Proceedings
Volume:
44
Issue:
10
Appears on pages(s):
141-148
Keywords:
none
DOI:
10.14359/8785
Date:
10/1/1947
Abstract:
A survey in Norway revealed serious deterioration of concrete storage tanks for low-temperature NaCl and CaClz brine. Laboratory tests indicated deteri-oration was caused by low temperature rather than brine action alone. It is believed that the brine penetrates the concrete, producing a salt solution which varies from relatively high concentration at the surface to low concentration some distance within. Low brine temperature will produce freezing of the water of the concrete except where salt concentra-tion is sufficient to prevent it. At a certain depth from the surface, salt concentration will be just sufficient to give an equilibrium between freezing and no freezing of the water. Here there will be a continual freezing and thawing action as the brine temperature changes a few degrees. Such action causes rapid disintegration. Suggested remedies are thorough drying to remove water near surface of concrete, and a seal coat to prevent brine penetra-tion.