アルカリ骨材反応によるコンクリートの膨張に及ぼす温度の影響

URI http://harp.lib.hiroshima-u.ac.jp/it-hiroshima/metadata/7205
ファイル
タイトル
アルカリ骨材反応によるコンクリートの膨張に及ぼす温度の影響
別タイトル
The Effect of Temperature on the Expansions of Concrete Caused by Alkali-Aggregate Reaction
著者
氏名 米倉 亜州夫
ヨミ ヨネクラ アスオ
別名 Yonekura Asuo
氏名 伊藤 秀敏
ヨミ イトウ ヒデトシ
別名 Ito Hidetoshi
氏名 政所 暢利
ヨミ マサドコロ ノブトシ
別名 Masadokoro Nobutoshi
キーワード
alkali-aggregate reaction
ASR
environmental temperature
expansion
concrete
lithium nitrite
NDC
511.7
抄録

In this paper,the effect of environmental temperature on alkali-aggregate silica reaction (ASR) of the concrete using reactive coarse aggregate is described. The sodium hydroxide NaOH of 8.16kg/? is added to the concrete in order to accelerate ASR. The expansions caused by ASR of the concrete are measured at environmental temperature of 80℃ hot water,60℃ and 40℃ underwater and fog room,and 20℃ underwater for 180 days. And,ASR repression effects by lithium nitrite under different temperatures are also examined. As a result of this study,in case of concrete exposed in water at 80℃,the expansion of concrete caused by ASR occurred at earliest time,and reaction velocity was highest,too,but the quantity of expansion in the long term was smaller than that in case of concrete in water or fog room at 60℃ and 40℃. In case of concrete exposed in water at 20℃,the expansion of concrete did not occur. ASR repression effects caused by lithium nitrite were extremely large at all the temperatures.

掲載雑誌名
広島工業大学紀要. 研究編
41
開始ページ
53
終了ページ
60
出版年月日
Feb-07
出版者
広島工業大学
ISSN
13469975
NCID
AA11599110
本文言語
日本語
資料タイプ
紀要論文
著者版フラグ
出版社版
関連URL
旧URI
区分
it-hiroshima