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    Effects of Quaternary Ammoniums on the Properties of Lignosulfonate Series Additives for Cement
    季铵阳离子对木质素类水泥添加剂性能的影响
    Analyses on the Toughening and Crack Arrest Effects, Mechanisms of Microcrystal Additive for Cement Stabilized Soil
    微晶添加剂的增韧止裂效应及其机理分析
    Domestic and overseas fluid loss additives for cement slurry
    国内外油井水泥降失水剂概述
    The concentration of two additives for cement sturries, naphthalene sulfonic acid/formaldehyde condensation product, FDN, and calcium lignosulfonate, CLS,in their mixed solutions are determined UV-spectrometrically by a special procedure.
    本文建立了用紫外分光光度法测定混合溶液中FDN和CLS浓度的方法,利用该方法研究了FDN和CLS在G级水泥上的竞争吸附。
    With the field test of some wells, the optimlzation of types and dosages of filtrate loss reduction additive for cement slurry is beneficial for improving cementing quality.
    经数十口井试验,只要采取优选水泥浆降失水剂的类型和剂量的措施,对提高固井质量十分有效。
    The high efficient building mortar additive SG series is a new additive for cement mortar mixture. It not only can improve workability and water-retaining property of building mortar, but also can obviously increase every property index of mortar.
    S G 系列高效建筑砂浆外加剂是一种新型的水泥砂浆拌合物外加剂,掺入后不仅能改善建筑砂浆的和易性和保水性,而且能明显提高砂浆的各项性能指标。
 

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