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Decalcification of cement concrete structures and dissolution of bitumen by windshield washer fluid

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タイトル: Decalcification of cement concrete structures and dissolution of bitumen by windshield washer fluid
その他のタイトル: ウインドーウォッシャー液によるセメントコンクリート構造物の脱カルシウム化とアスファルトの溶出
著者: Moriyoshi, Akihiro 著作を一覧する
Tabata, Masayoshi 著作を一覧する
Kitagawa, Hiromitsu 著作を一覧する
Tokumitsu, Katsuya 著作を一覧する
Saeki, Noboru 著作を一覧する
キーワード: Cement concrete
Windshield washer fluid
Ion exchange
発行日: 2002年 3月 1日
出版者: Japan Petroleum Institute
誌名: Journal of the Japan Petroleum Institute
巻: 45
号: 2
開始ページ: 84
終了ページ: 88
抄録: A new phenomenon of decalcification of the cement concrete structure and dissolution of bitumen in bituminous pavement is described, caused by the surfactants included in the windshield washer fluid of automobiles. Decalcification occurs in cement concrete samples in the laboratory even at low concentrations of surfactant of 25ppm. Recently, foam with fine bubbles have been observed in the water on pavement just after rain worldwide. The decalcification reaction was identified as an ion exchange reaction between the calcium ions Ca2+ in the concrete and Na+ in the surfactants using the electron spectroscopy for chemical analysis (ESCA) method. Bitumen was also found in the decalcified cement concrete, from which the Ca component had dissolved out gradually with time.
資料タイプ: article
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 森吉 昭博


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