水セメント比およびシリカフュームの添加率に着目した低温オートクレーブ養生に関する基礎的研究

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タイトル別名
  • Fundamental Study on Low-Temperature Autoclaving Focused on the Water Cement Ratio and Silica Fume Content
  • ミズ セメントヒ オヨビ シリカフューム ノ テンカリツ ニ チャクモク シタ テイオン オートクレーブ ヨウジョウ ニ カンスル キソテキ ケンキュウ

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説明

This paper describes a fundamental study conducted for establishing a technique of low-temperature autoclave curing, with the focus placed on the water cement ratio and silica fume content. The experimental results showed that silica fume-added specimens cured at 150°C had similar compressive strength to those cured at 180°C. The low-temperature autoclave curing was made possible by the addition of silica fume which increased the gel porosity and reduced the total porosity through accelerated pozzolanic reaction. In addition, the gel porosity did not show significant change against the autoclave curing temperature in the presence of silica fume. This was considered to be the key factor in the mechanism of low-temperature autoclave curing. It was also demonstrated in this study that the presence of tobermolite was not an essential requirement for the high strength development in which C-S-H played a predominant role.

収録刊行物

  • 材料

    材料 62 (10), 615-620, 2013

    公益社団法人 日本材料学会

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