Title:
Freezing and Thawing Resistance of Condensed Silica Fume (Microsilica) Concrete Exposed to Deicing Chemicals
Author(s):
Eigil V. Sorensen
Publication:
Symposium Paper
Volume:
79
Issue:
Appears on pages(s):
709-718
Keywords:
air entrainment; concretes; deicers; freeze-thaw
durability; scaling; silica.
DOI:
10.14359/6720
Date:
5/1/1983
Abstract:
Scale ctioning of concrete due to freezing and thawing action with the use of chemicals has become a severe concrete durability problem. The present paper reports results of freezing and thawing experiments performed to evaluate 4 the effect of microsilica (beneficiated condensed silica fume) addition to concrete in that respect. Tests performed using a fied method show that the drying rewetting standard and a modify history of the concrete prior to freezing and thawing has a sig-nificant influence on conventional concrete, whereas microsilica concrete is relatively unaffected. Air entrainment has a marked beneficial effect on both conventional and microsilica concrete, I although microsilica concrete with relatively low cement contents can be manufactured to be frost resistant without air entrain-ment.