アルカリシリカ反応によって劣化したコンクリートの組織と残留膨張性の予測(建設材料特集)

フォーマット:

論文

責任表示:

竹内, 勝信 ; 川村, 満紀 ; 鳥居, 和之

言語:

日本語

出版情報:

日本材料学会, 1994-08-15

著者名:

• 竹内, 勝信
• 川村, 満紀
• 鳥居, 和之

掲載情報:

材料=Journal of the Society of Materials Science, Japan

ISSN:

0514-5163      

巻:

43

通号:

491

開始ページ:

963

終了ページ:

969

バージョン:

publisher

概要:

金沢大学理工研究域環境デザイン学系<br />Recently, a number of bridge concrete piers which appear to be damaged by the alkali-silica reaction, have been found in a certain district in Japan. The major purpose of this study is to reveal whether the dama … ge in the concrete piers was caused by an alkali-sicica reaction. Another important problem is to predict the residual expansion capacity of the affected concretes for the purpose of repairing them appropriately. The reactivity of aggregates used in the concretes was investigated by microscopic examination. In this district, a large amount of sodium chloride is being used as a deicing agent for many years. Accelerated expansion tests in saturated NaCl solution as well as in high humidity were carried out to predict the residual expansion of the actually damaged concrete piers. The correlation between the results obtained by the accelerated expansion tests in saturated NaCl solution and in high humidity was found to be considerably good. Andesitic and rhyolitic aggregates in the concretes were reacting.. 続きを見る

URL:

http://hdl.handle.net/2297/12299