Effects of Foreign Elements on Anhydrous and Hydrous C2S Phases, A Possible Feedstock for Hydraulic

• 作 者: P(o)hler K.[1]P(o)llmann H.[1]Stemmermann P.[2]Garbev K.[2]
• 机 构: Mineralogy/Geochemistry, Martin-Luther-University Halle Wittenberg, Halle/Saale, 06120, Germany
• 出 处: The 14th International Congress on the Chemistry of Cement (
• 发表日期: 2015年期

　　This study comprises the synthesis, characterization and hydration behavior of pure and doped C2S (Ca2SiO4;C=CaO S=SiO2.).The samples were synthesized via the Pechini method at 800℃ for 2h.Products were analyzed and characterized with X-ray powder diffraction, thermogravimetry, BET, density measurements and Raman spectroscopy.The hydration behavior at standard conditions (23℃, lbar) was investigated with heat flow calorimetry.Reactivity at hydrothermal conditions (200℃, 16bar) was tested using laboratory autoclaves.In situ hydration studies under hydrothermal conditions were also performed with time and temperature resolved XRD in transmission mode at the SUL-X beamline of the ANKA Synchrotron radiation facility (Karlsruhe) in a specially designed reaction cell.