...For this reason, when concrete is poured in cold weather, the aggregate must be stored to keep it from getting cold, and the water must be heated before pouring, and sufficient heat retention and curing must be done until the concrete has a compressive strength that will not cause frost damage. Aerated concrete: Concrete made porous by artificially mixing air bubbles into it (for example, by mixing in gas foaming agents or pre-made bubbles). It is often used as a lightweight precast material, taking advantage of its properties such as light weight (specific gravity 0.8 to 1.2 for structural use, specific gravity 0.5 or less for insulation) and high insulation properties. *Some of the terminology that refers to "aerated concrete" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…このため,寒中コンクリートでは骨材が冷えないように貯蔵したり,水を加熱して打込みを行い,凍害を受けない圧縮強度になるまで十分な保温養生,給熱養生を必要とする。気泡コンクリートaerated concreteコンクリートに人工的に気泡を混入(例えばガス発泡剤とか,あらかじめ作ったあわを混入する)して多孔質化したコンクリート。重量が軽い(構造用で比重0.8~1.2,断熱材用で比重0.5以下),断熱性が高いなどの性質を利用し,軽量プレキャスト部材として用いる場合が多い。… ※「aerated concrete」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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