Effect of mechanical activation on the hydraulic properties of stainless steel slags

详细信息	查看全文 | 推荐本文 |

• 作者：Lubica Kriskova^a ; ^{lubica.kahalova@mtm.kuleuven.be} ; Yiannis Pontikes^a ; &Ouml ; zlem Cizer^b ; Gilles Mertens^c ; Wout Veulemans^a ; Daneel Geysen^a ; Peter Tom Jones^a ; Lucie Vandewalle^b ; Koen Van Balen^b ; Bart Blanpain^a
• 关键词：Stainless steel slag ; Characterization (B) ; Hydration (A) ; Microstructure (B) ; X-ray diffraction (B)
• 刊名：Cement and Concrete Research
• 出版年：2012
• 期刊代码：12_00088846
• 类别：ms
• 出版时间：June, 2012
• 卷：42
• 期：6
• 页码：778-788
• 文件大小：2262 K

摘要

This work aims to assess the possibility of using ladle metallurgy and argon oxygen decarburization stainless steel slag as a hydraulic binder after mechanical activation. Prolonged milling in ethanol suspension resulted in 10-fold increase of the surface area and increase of the amorphous phase. Calorimetric analysis of slags mixed with water indicated the occurrence of exothermic reactions. XRD results revealed that periclase, merwinite, 纬-Cb>2b>S and bredigite, decreased with hydration time. Thermogravimetric analyses indicated that the main hydration products are most probably C-S-H, CH and MH. The hydrated products in both slags were similar to C-S-H gel. WDS analysis demonstrated Ca and Si to be widespread in the structure. Formation of M-S-H gel or incorporation of Mg in the C-S-H gel remains uncertain. The 90 days compressive strength of mortars prepared from slags reached approximately 20%for LM and 10%for AOD of the compressive strength of mortars prepared from OPC.