Blank Cover Image

蒸気養生したフライアッシュコンクリートにおけるASR抑制効果の評価方法に関する実験的検討

フォーマット:
論文
責任表示:
宮野, 暢紘 ; 久保, 善司 ; 鳥居, 和之
言語:
日本語
出版情報:
The Society of Materials Science. Japan. = 日本材料学会, 2010-10-01
著者名:
掲載情報:
材料 = Journal of the Society of Materials Science, Japan
ISSN:
0514-5163  CiNii Research  Webcat Plus  JAIRO
巻:
59
通号:
10
開始ページ:
775
終了ページ:
780
バージョン:
publisher
概要:
金沢大学理工研究域環境デザイン学系<br />It has been pointed out that the use of fly ash in concrete is effective in controlling the expansion due to ASR (alkali silica reaction). In Japan, the total amounts of alkalies in concrete has been kept up to 3.0kg/m3 as one of the major countermeasures for ASR suppression. Recently, it is reported that ASR may be accelerated by the steam curing of PCa concrete even in the case of low alkalies content of less than 3.0kg/m3. On the other hand, the effectiveness of fly ash on the suppression of ASR in concrete is often evaluated by means of the mortar bar method according to JIS A1146, however there are some problems that it takes the long time of 3 or 6 months in assessment, and that it can't take the pessimum content of reactive aggregate in mix proportions of mortar into considerations. In this study, the effectiveness of fly ash in steam-cured concrete was experimentally investigated. For this purpose, the steam-cured fly ash concrete with the replacement percentages by fly ashes was exposed to the accelerated test conditions which were selected as the factor, the temperature, the water supply, the immersion in saturated NaCl solution and so on. As the result of tests, it has been found that the accelerated condition exposed to the saturated NaCl solution at 50°C is most suitable as the rapid test method for the steam-cured fly ash concrete. © 2010 The Society of Materials Science. 続きを見る
URL:
http://hdl.handle.net/2297/26278
タイトル・著者・出版者が同じ資料

類似資料:

1
 
2
 
3
 
4
 
5
 
6
 
7
 
8
 
9
 
10
 
11
 
12
 

広野, 真一, 鳥居, 和之

日本材料学会 The Society of Materials Science, Japan

広野, 真一, 鳥居, 和之

日本材料学会 = The Society of Materials Science, Japan

鳥居, 和之, Torii, Kazuyuki

金沢大学理工研究域環境デザイン学系

石井, 浩司, 奥田, 由法, 谷川, 伸, 鳥居, 和之

日本コンクリート工学会 = Japan Concrete Institute

大代, 武志, 鳥居, 和之

日本コンクリート工学会 = Japan Concrete Institute