DISPERSANT FOR PC GROUT, COMPOSITION FOR PC GROUT, AND PC GROUT MATERIAL

To provide a dispersant for PC grout, which has smaller intensity variation and excellent initial dispersibility, in which long working life can be obtained, curing failures do not occur under a low-temperature circumstance, and sufficient compressive strength can be secured; and to provide a compos...

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Bibliographic Details
Main Authors YOSHIZAWA CHIAKI, WATASE HIROSHI, OKADA KAZUHISA
Format Patent
LanguageEnglish
Japanese
Published 27.08.2020
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
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Summary:To provide a dispersant for PC grout, which has smaller intensity variation and excellent initial dispersibility, in which long working life can be obtained, curing failures do not occur under a low-temperature circumstance, and sufficient compressive strength can be secured; and to provide a composition for PC grout and a PC grout material.SOLUTION: A dispersant for PC grout comprises the following copolymer (A): a polycarboxylic acid-based copolymer comprising a constitutional unit (1) and a constitutional unit (2), where: the constitutional unit (1) is formed with one or more selected from predetermined monomers; and the constitutional unit (2) is formed with one or more selected from a (meth)acrylic acid and/or its salt.SELECTED DRAWING: None 【課題】強度のバラツキが少なく、初期分散性に優れ、長い可使時間が得られ、低温環境下でも硬化不良が発生せず、十分な圧縮強度を確保することのできる、ＰＣグラウト用分散剤、ＰＣグラウト組成物及びＰＣグラウト材を提供する。【解決手段】下記共重合体（Ａ）を含有するＰＣグラウト用分散剤。共重合体（Ａ）：構成単位（１）及び構成単位（２）を含むポリカルボン酸系共重合体構成単位（１）：特定の単量体から選ばれる一つ又は二つ以上から形成される構成単位構成単位（２）：（メタ）アクリル酸及び／又はその塩から選ばれる一つ又は二つ以上から形成される構成単位【選択図】なし
Bibliography:Application Number: JP20190021114