Cement admixture having superior water-reducing properties and method for preparing the same

本发明提供了一种水泥外加剂，包含至少一种基于羧酸的共聚物，该共聚物包含反应表面活性剂作为单体，或通过用碱性物质中和共聚物获得的共聚物盐，还提供了制备该水泥外加剂的方法及包含该水泥外加剂的水泥混合物。本发明的水泥外加剂通过改善水泥颗粒的分散性，甚至在高减水配方时也可增强混合物的流动性，防止流动性随着时间降低，并通过不断地供给足够数量的气流提供良好的加工性能。 The present invention provides a cement admixture that comprises at least one of a carboxylic acid based copolymer compr...

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Bibliographische Detailangaben
1. Verfasser:	KANG DONG-KYU,KIM DAE-JOONG,SONG HEE-BONG,CHOI BYEONG-GIL,LEE CHAN-YOUNG,LEE CHANG-YEOB,NO DONG-DUCK,SONG JONG-KEUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS REFRACTORIES SLAG THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	本发明提供了一种水泥外加剂，包含至少一种基于羧酸的共聚物，该共聚物包含反应表面活性剂作为单体，或通过用碱性物质中和共聚物获得的共聚物盐，还提供了制备该水泥外加剂的方法及包含该水泥外加剂的水泥混合物。本发明的水泥外加剂通过改善水泥颗粒的分散性，甚至在高减水配方时也可增强混合物的流动性，防止流动性随着时间降低，并通过不断地供给足够数量的气流提供良好的加工性能。 The present invention provides a cement admixture that comprises at least one of a carboxylic acid based copolymer comprising a reactive surfactant as a monomer or a copolymer salt obtained by neutralizing the copolymer with an alkaline substance, a method for preparing the same, and a cement composition comprising the same. The cement admixture of the present invention increases composition fluidity even at a high water-reducing formulation by improving dispersibility of cement particles, prevents a decrease of fluidity as the function of time, and offers good workability by supplying an adequate amount of air flow continuously.