2014年1月
The effects of pore size distribution and working techniques on the absorption and water content of concrete floor slab surfaces
CONSTRUCTION AND BUILDING MATERIALS
- ,
- ,
- 巻
- 50
- 号
- 開始ページ
- 560
- 終了ページ
- 566
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.conbuildmat.2013.10.013
- 出版者・発行元
- ELSEVIER SCI LTD
Pore size distribution in the surface of a concrete floor slab may vary according to the quality of the finishing work, such as trowelling, or with the curing of the concrete. The pore size distribution also influences the water absorbency and water content that modulates the quality of the finished floor. We examined how working techniques, e.g., floor top finishing and curing and the resulting pore distribution on the concrete floor slab surface related to water absorbency and the water content of study specimens. As a result, the more the surface is smoothed, pressing it with a wood or steel trowel (henceforth, Finishing) and the longer the surface is moisture-cured, the more the volume of pores ranging from 10(-7) to 10(-6) m (100 nm to 1 gm) in diameter is reduced, while the volume of pores with diameters of 10-7 m (100 nm) and smaller tended to increase. Furthermore, the study revealed that the quantity of pores exceeding ca. 10(-7) In (100 nm) in diameter strongly affected the water absorbency, while that of pores smaller than 10(-8) m (10 nm) in diameter affected the water content. Thus, the above results demonstrate that a working technique of better quality decreases the water absorbency and increases the water content of a concrete floor slab. (C) 2013 Elsevier Ltd. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.conbuildmat.2013.10.013
- ISSN : 0950-0618
- eISSN : 1879-0526
- Web of Science ID : WOS:000330489200066