35年間海水の作用を受けた高炉セメントコンクリートの耐久性(建築学科)

概要

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This study purposes to quantitatively estimate resistance against seawater of normal-weight and light-weight Concretes that were prepared using types B and C of portland blast-furnace slag cement as well as ordinary portland cement. For this purpose, specimens of both types of concrete were immersed in natural seawater for 35 years (under the condition that the specimens were exposed to the atmosphere in time of low tide), and then examined on their visual appearance, length and weight changes, flexural and compressive strength, carbonated thickness, chloride penetration, hydration, etc. As a result, it was proved that in comparison with the ordinary portland cement concrete, the portland blast-furnace slag cement concrete has such feathers as small decrease of compressive strength, small length variation (expansion) and mass change (decrease), and low chloride penetration rate.
2006-03-20