Title:
Correlation Between Laboratory Accelerated
Freezing and Thawing and Weathering
at Treat Island, Maine
Author(s):
Thomas B. Kennedy and Katherine Mather
Publication:
Journal Proceedings
Volume:
50
Issue:
10
Appears on pages(s):
141-172
Keywords:
no keywords
DOI:
10.14359/11755
Date:
10/1/1953
Abstract:
Six coarse and eight fine aggregates were used in 48 combinations to make concrete specimens, all with the same water-cement, ratio, air content, and slump for comparative testing in accelerated freezing and thawing and ex-posure to natural weathering at mean-tide elevation at Treat Island, Me. The two types of exposure, aggregates used, test procedures, and results of dynamic testing of concrete specimens in both exposures are described. A summary is included of the examination of some of the concrete specimens and hypotheses suggested to explain differences in results in the two exposures, and a discussion of the relation of difference between thermal coefficients of coarse aggregate and mortar and durability factor found in these tests. The appendix contains more detailed information on the examination of the con-crete and related discussion of other factors believed to be important in explaining results. Comparison of laboratory and field resuks indicates that each aggregate combination behaves in an individual manner in each exposure, as influenced by differences in materials and in exposures. Prediction of behavior in one type of exposure from behavior in another cannot be made unless all the differences between the two can fully be evaluated, which is not yet possible.