HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >

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

Files in This Item:
moriyoshi_JJPI45_84.pdf614.65 kBPDFView/Open
Please use this identifier to cite or link to this item:

Title: Decalcification of cement concrete structures and dissolution of bitumen by windshield washer fluid
Other Titles: 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
Authors: Moriyoshi, Akihiro1 Browse this author →KAKEN DB
Tabata, Masayoshi2 Browse this author →KAKEN DB
Kitagawa, Hiromitsu3 Browse this author
Tokumitsu, Katsuya4 Browse this author
Saeki, Noboru5 Browse this author →KAKEN DB
Authors(alt): 森吉, 昭博1
田畑, 昌祥2
北川, 弘光3
徳光, 克也4
佐伯, 昇5
Keywords: Cement concrete
Windshield washer fluid
Ion exchange
Issue Date: 1-Mar-2002
Publisher: Japan Petroleum Institute
Journal Title: Journal of the Japan Petroleum Institute
Volume: 45
Issue: 2
Start Page: 84
End Page: 88
Abstract: 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.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 森吉 昭博

Export metadata:

OAI-PMH ( junii2 , jpcoar )

MathJax is now OFF:


 - Hokkaido University