建設分野における界面活性剤の利用

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  • Use of Surface-Active Agents in Construction Industry
  • ケンセツ ブンヤ ニ オケル カイメン カッセイザイ ノ リヨウ

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Surface-active agents as chemical admixtures are widely used in concrete industry to improve the properties of fresh concrete. By the introduction of admixtures, the use of high strength concrete with low water content became popular, and the durability of concrete structures was largely improved. The most frequently used admixtures are (1) water-reducing and setretarding admixtures to reduce the water requirement of concrete or retard the set, or both [these include ligninsulfonic acid, hydroxylcarboxylic acids, carbohydrates, polyols, and the salts], (2)air-entraining admixtures to introduce a system of small air bubbles into the fresh concrete dung mixing [these are anionic surface-active agnets]. A new group of water-reducing admixtures, termed superplasticizers, has been introduced in the last few years [these are naphthalenesulfonic acid, specific ligninsulfonic acid, and polycarboxylic acid]. They are about twice as effective as the conventional admixtures.

収録刊行物

  • 日本油化学会誌

    日本油化学会誌 45 (10), 1169-1177,1209, 1996

    公益社団法人 日本油化学会

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