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It's well knownthat redlead and zinc chromateare extensively used as anticorrosive pigment in thefor mulation of protective paints due totheir anticor-rosive efficiency.However,their applications havebeen gradually discouraged since1990because theyare hazardous and high toxic.Among several non-toxic anticorrosive pigments developed so far,zincphosphate is a desired alternative to the toxic pig-ments for its superior perfor mance.Unfortunately,zinc phosphate still cannot completelyreplacelead o… 相似文献
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混凝土防渗墙采用“钻劈法”成槽,槽孔要求平整垂直,严格控制孔斜率,并对槽孔进行清孔换浆,确保混凝土墙浇筑的质量;混凝土浇筑工序对成墙质量至关重要,需预备好足够的砂浆,一次性对导管进行封堵,浇筑过程严格控制混凝土质量及浇筑工序,保证施工质量。 相似文献
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