マスコンクリートの温度上昇に及ぼす籾殻灰混合セメントの影響

書誌事項

タイトル別名
  • Influence of Rice Husk Ash Cement on Temperature Rise in Mass Concrete
  • マスコンクリート ノ オンド ジョウショウ ニ オヨボス モミガラバイ コンゴ
公開日
1998
DOI
  • 10.11408/jsidre1965.1998.853
公開者
社団法人 農業農村工学会

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説明

Rice husk ashes were produced by controlled field burning operations in Thailand. The ashes obtained were pulverized in a ball mill for 60 min and used as a partial cement replacement material in concrete. The heat of hydration of the cement and the adiabatic temperature rise of the concrete containing up to 60 % rice husk ash by weight of the total cementing material were determined. The evolution of hydration heat of the blended cement decreased as the ash content of the cementing material increased. The adiabatic temperature rise of the concretes containing 20% or 40 % rice husk ash was not significantly reduced compared with the control concrete without rice husk ash. The adiabatic temperature rise of the concrete containing 60% rice husk ash was 17°C lower than that of the control concrete. Influences of the heat generation of the concretes on temperature behaviors in a mass concrete structure were also investigated using finite element thermal analysis.

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