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YP-SFA®高性能膨胀抗裂剂是传统防水膨胀材料的升级产品，产品主要结合目前国内混凝土抗裂膨胀剂和补偿收缩混凝土发展现状而研发的特种外加剂，主要成分硫铝酸钙和混凝土活性剂，该产品在遇水的条件下能促进水泥以及粗细材料中的大小金属元素进行催化反应，使水泥颗粒充分碎裂分解，加速其水化速度，降低水化热以达到完全水化的目的，催化反应中同时产生大量的高浓度浆体，使水泥具有更佳的胶结性与致密性，硬化后的混凝土兼具抗水渗透、抗干缩龟裂、抗压强度提高的特性，能提高混凝土的耐久性，经工程实践表明其综合阻裂效能明显，与各类水泥的和易性好，能满足各类商品混凝土施工需要。

YP-SFA^® high performance expansion anti crack agent

YP-SFA ^® high performance expansion anti-crack agent is an upgraded product of traditional waterproof expansion materials. The product is mainly a special admixture developed based on the current development status of concrete anti-crack expansion agent and compensated shrinkage concrete in China. The main components are calcium sulfoaluminate and concrete active agent. The product under the condition of the water can promote the cement material and thickness of the size of the metal elements in catalytic reaction, such can make cement particles fully broken decomposition, accelerate the hydration speed, reduce the hydration heat in order to achieve the purpose of completely hydrated, catalytic reaction in producing a large amount of high concentration slurry, cement has better cementation and compactness, The hardened concrete has the characteristics of water penetration resistance, dry shrinkage resistance cracking and compressive strength improvement, which can improve the durability of concrete. The engineering practice shows that its comprehensive crack resistance efficiency is obvious, and the workability of all kinds of cement is good, which can meet the needs of all kinds of commercial concrete construction.