concrete preheatingとは 意味・読み方・使い方

The method for molding a concrete segment comprises the steps of charging highly flowable concrete in a foam, preheating at a predetermined temperature lower than a highest curing temperature for a predetermined time, then raising to the highest temperature, curing it for a predetermined time in the state that the highest curing temperature is maintained, gradually cooling it, and releasing it from the form.例文帳に追加

高流動性コンクリートを型枠内に充填し、最高養生温度より低い所定温度で所要時間プレヒーティングした後、最高養生温度まで昇温して最高養生温度を維持した状態で所要時間養生し、徐冷して脱型する。 - 特許庁

Actual preheating of the steel girder is ended in a period after the point of time at which the temperature of the placed concrete is elevated by heat hydration of cement and reaches a peak temperature and before the time when the secular change (line d) of a crack index obtained by analysis under the condition of assuming that preheating of the steel girder is to be continued takes the minimum value.例文帳に追加

打設されたコンクリートがセメントの水和熱により温度上昇してピーク温度に達する時点よりも後で、鋼桁の予熱を継続すると仮定した条件の下で解析によって求められるひび割れ指数の経時変化（線ｄ）が極小値をとるよりも前の期間に、鋼桁の実際の予熱を終了する。 - 特許庁