RAPID-HARDENING ADMIXTURE MATERIAL AND RAPID-HARDENING CEMENT COMPOSITION

• Main Authors: MIZUNO HIROKI, YAMAGISHI TAKANORI
• Format: Patent
• Language: English; Japanese
• Published: 03.03.2023
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

To provide an admixture material for repair material that has both rapid-hardening property and neutralization suppression effect, and furthermore moisture permeation resistance after neutralization.SOLUTION: Provided is a rapid-hardening admixture material which contains a cement admixture material, and alkali metal salt and/or alkaline earth metal salt, and in which the cement admixture material contains one kind of or two or more kinds of non-hydraulic compounds selected from a group consisting of γ-2CaO-SiO2, 3CaO-2SiO2, α-CaO-SiO2, and calcium magnesium silicate, and the non-hydraulic compound contains Li and a content ratio of the Li is 0.001 to 1.0 mass% in terms of oxide.SELECTED DRAWING: None 【課題】急硬性と中性化抑制効果、さらには中性化後の水分浸透抵抗性を兼ね備えた、補修材料用の混和材を提供すること。【解決手段】γ－２ＣａＯ・ＳｉＯ２、３ＣａＯ・２ＳｉＯ２、α－ＣａＯ・ＳｉＯ２、及びカルシウムマグネシウムシリケートからなる群から選ばれる１種又は２種以上の非水硬性化合物を含むセメント混和材であって、前記非水硬性化合物中にＬｉを含有し、該Ｌｉの含有率が酸化物換算で０．００１～１．０質量％であるセメント混和材とアルカリ金属塩及び／又はアルカリ土類金属塩とを含有してなる急硬性混和材である。【選択図】なし