The improvement of the water-resistance of the phosphogypsum by adding waste metallurgical sludge

被引：22
|
作者：
Fornes, Ignacio Villalon [1 ]
Vaiciukyniene, Danute [1 ]
Nizeviciene, Dalia [2 ]
Dorosevas, Viktoras [1 ]
机构：
[1] Kaunas Univ Technol, Fac Civil Engn & Architecture, Bldg Mat & Struct Res Ctr, Studentu St 48, LT-51367 Kaunas, Lithuania
[2] Kaunas Univ Technol, Fac Elect & Elect Engn, Dept Elect Power Syst, Studentu St 48, LT-51367 Kaunas, Lithuania
来源：
JOURNAL OF BUILDING ENGINEERING | 2021年 / 43卷
关键词：
Phosphogypsum; Metallurgical sludge; Water-resistance; Compressive strength; Impurity neutralisation; NON-FIRED BRICKS; GYPSUM COMPOSITIONS; CEMENT; AGRICULTURE; MANAGEMENT; ANHYDRITE; PLASTER;
D O I：
10.1016/j.jobe.2021.102861
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The solution of the phosphogypsum ecological problem consist in its utilisation. The purpose of the study is to improve the water-resistance of the phosphogypsum to make it a suitable and green alternative to cement. Hence, a waste metallurgical sludge from a ship-repairing yard was added in amounts of 0.1 to 0.5%. The modifier reduced the harmful water-soluble phosphate by 15 times and maintained the high hydration degree of the specimens. The compressive strength was tested for both the dry and the previously immersed in water specimens. The addition of 0.1-0.3% metallurgical sludge improved their water-resistance by 2 times.
引用
收藏
页数：11
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