凍結融解作用をうけるコンクリ-トの劣化性状について
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概要
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The purpose of this study is to investigate the mechanism of freezing and thawing deterioration in concrete. Concrete specimens having coarse aggregate samples or steel bars were used for this purpose. The main conclusions were as follows : 1）The interval changes of the coarse aggregate samples increased with the increase of the diameter of the aggregates by freezing and thawing action. 2）The bond cracks between mortar and horizontal bars occured more easily as compared with the vertical bars by the freeze-thaw action. It was found that mortar had many air voids as compared with concrete of the same water-cement ratio, from the microscopic determination of air-void content in hardened concrete and mortar.
- 北見工業大学の論文
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