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Identification of the sources of organic compounds that decalcify cement concrete and generate alcohols and ammonia gases

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Title: Identification of the sources of organic compounds that decalcify cement concrete and generate alcohols and ammonia gases
Authors: Tomoto, Takashi Browse this author
Moriyoshi, Akihiro Browse this author →KAKEN DB
Sakai, Kiyoshi Browse this author
Shibata, Eiji Browse this author →KAKEN DB
Kamijima, Michihiro Browse this author →KAKEN DB
Keywords: cement concrete
black organic matter
ammonia gas
Issue Date: Sep-2009
Publisher: Elsevier
Journal Title: Building and Environment
Volume: 44
Issue: 9
Start Page: 2000
End Page: 2005
Publisher DOI: 10.1016/j.buildenv.2008.12.011
Abstract: In this study, the emission sources of various types of airborne organic matter, which deteriorates cement concrete by penetrating into it together with moisture, were identified using high-performance liquid chromatography and gas chromatograph mass spectrometer. As a result, it was revealed that the types of organic matter contained in decalcified cement concrete were almost the same as those found in total suspended matter in the air, and that they were primarily being emitted as particles of exhaust from diesel vehicles and radial tires used in summer. Such organic matter includes substances suspected as having endocrine disrupting properties. Hydrolysis occurs when these substances penetrate into a highly alkaline cement concrete, and leads to deterioration of cement concrete and the release of particular kinds of alcohols and ammonia gases, which pollute indoor air and can cause sick building syndrome.
Description: Technical Note
Type: article (author version)
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

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