WATER-REDUCING COMPOSITION, HYDRAULIC COMPOSITION, AND METHOD FOR PRODUCING THE SAME: Fid-Bau Portal

WATER-REDUCING COMPOSITION, HYDRAULIC COMPOSITION, AND METHOD FOR PRODUCING THE SAME

YAMAKAWA TSUTOMU

To provide a water-reducing composition which contains a polycarboxylic acid-based water reducing agent, water-soluble cellulose ether, gums, and a defoamer, and has storage stability improved.SOLUTION: A water-reducing composition includes (A) a water reducing agent containing a polycarboxylic acid-based water reducing agent and a naphthalene-based water reducing agent, (B) water-soluble cellulose ether, (C) gums, and (D) a defoamer. The ratio between a solid content mass of the polycarboxylic acid-based water reducing agent and a solid content mass of the naphthalene-based water reducing agent is preferably 1:99 to 80:20.SELECTED DRAWING: None

【課題】ポリカルボン酸系減水剤、水溶性セルロースエーテル、ガム類及び消泡剤を含む減水剤組成物であって、その保存安定性が改善された減水剤組成物。【解決手段】（Ａ）ポリカルボン酸系減水剤及びナフタレン系減水剤を含む減水剤、（Ｂ）水溶性セルロースエーテル、（Ｃ）ガム類、（Ｄ）消泡剤を含む減水剤組成物。ポリカルボン酸系減水剤の固形分質量とナフタレン系減水剤の固形分質量の比が、１：９９から８０：２０であることが望ましい。【選択図】なし

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