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タイトル: Evaluation of capillary pore size characteristics in high-strength concrete at early ages
著者: Igarashi, Shin-ichi link image link image
Watanabe, Akio
Kawamura, Mitsunori link image
五十嵐, 心一
発行日: 2005年 3月
出版社(者): Elsevir
引用: Cement and Concrete Composites,35(3),pp.513-519
雑誌名: Cement and Concrete Composites
ISSN: 0008-8846
巻: 35
号: 3
開始ページ: 513
終了ページ: 519
キーワード: Backscattered electron imaging
Pore size distribution
Silica fume
抄録: The quantitative scanning electron microscope-backscattered electron (SEM-BSE) image analysis was used to evaluate capillary porosity and pore size distributions in high-strength concretes at early ages. The Powers model for the hydration of cement was applied to the interpretation of the results of image analysis. The image analysis revealed that pore size distributions in concretes with an extremely low water/binder ratio of 0.25 at early ages were discontinuous in the range of finer capillary pores. However, silica-fume-containing concretes with a water/binder ratio of 0.25 had larger amounts of fine pores than did concretes without silica fume. The presence of larger amounts of fine capillary pores in the concretes with silica fume may be responsible for greater autogenous shrinkage in the silica-fume-containing concretes at early ages.
URI: http://hdl.handle.net/2297/1828
関連URI: http://dx.doi.org/10.1016/j.cemconres.2004.06.036
資料種別: Journal Article
版表示: author

このアイテムを引用あるいはリンクする場合は次の識別子を使用してください。 http://hdl.handle.net/2297/1828



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