HYDRAULIC COMPOSITION, MORTAR COMPOSITION, AND MORTAR CURED BODY

PROBLEM TO BE SOLVED: To provide a hydraulic composition and a mortar composition capable of forming a mortar cured body having sufficient adhesive durability when integrated with a concrete structure.SOLUTION: There is provided a hydraulic composition which contains Portland cement, calcium carbonate fine powder, fine aggregate, an inorganic expansion material, a superplasticizer, a shrinkage reducing agent, a deforming agent, and a re-emulsifying powdered resin, where the inorganic expansion material is an unslaked lime-gypsum expansion material and is formed of two kinds of an expansion material A having less than 40 mass% of the unslaked lime in the expansion material and an expansion material B having 40 mass% or more of the unslaked lime therein, and a blending ratio of the expansion material A and the expansion material B is in a range of 55:45 to 95:5.SELECTED DRAWING: Figure 1 【課題】 コンクリート構造物と一体化したときに十分な接着耐久性を有するモルタル硬化体を形成することが可能な水硬性組成物及びモルタル組成物を提供することを目的とする。【解決手段】 ポルトランドセメント、炭酸カルシウム微粉末、細骨材、無機系膨張材、流動化剤、収縮低減剤、消泡剤及び再乳化形樹脂粉末を含み、無機系膨張材は生石灰−石膏系膨張材であり、無機系膨張材は、当該膨張材中の生石灰量の割合が４０質量％未満の膨張材Ａ及び生石灰量が４０質量％以上の膨張材Ｂの２種類からなり、膨張材Ａ及び膨張材Ｂの配合比が５５：４５〜９５：５の範囲である水硬性組成物を提供する。【選択図】 図１