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发明公开
CN101164954A 磷石膏缓凝高效减水剂的制备方法 失效 - 权利终止

磷石膏缓凝高效减水剂的制备方法
摘要：
磷石膏缓凝高效减水剂及其制备方法。以磷石膏工业废渣为原料，加入改性剂改性处理，低温干燥，粉细，加入表面活性剂复配，得到粉状的磷石膏缓凝高效减水剂。将其应用于水泥混凝土或砂浆的拌和过程，可以使其减水率提高，高于国标要求≥12％，终凝时间可达24h以上，仍保持28d抗压强度比≥120％，可以取代节约水泥，降低混凝土和砂浆成本。有利于废物利用，节能减排，保护环境。
摘要（英）：

This invention relates to an ardealite slow-setting high efficiency water-reducing agent. The waste-residue from the ardealite industry is used as raw material, being modified by adding modifier, proceeded steps of: low temperature-drying, grinding into powder, adding surfactant and mixing to obtain this inventive product. When application, the product is mixed in concrete or mortar, increasing its water-reducing rate higher than the international standard by 12%, the final-set time being up to 24hrs, the compression strength at 28d>120%. It can lowers the cost of concrete or mortar with benefits of wastes reutilization and environmental-protection.

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