【摘 要】
：
The present work presents the microstructure of β-Ca2SiO4 (β-C2S) after accelerated carbonation.The synthesis procedure of β-C2S was examined first,and the crystalline and amorphous structure,the distribution and the pore structure ofβ-C2S carbonation pro
【机 构】
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School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China;Sta
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
论文部分内容阅读
The present work presents the microstructure of β-Ca2SiO4 (β-C2S) after accelerated carbonation.The synthesis procedure of β-C2S was examined first,and the crystalline and amorphous structure,the distribution and the pore structure ofβ-C2S carbonation products were also determined by X-ray diffraction (XRD) quantitative analysis,simultaneous thermal analyzer (TG/DTA),Fourier transform-infrared spectroscopy (FT-IR),high resolution 29Si magic angle spinning nuclear magnetic resonance (29Si NMR),N2-sorption techniques,and scanning electron microscopy (SEM),respectively.Test results indicate that carbonation products are dramatically formed in the initial 2 h.The main carbonation products are crystalline calcite and amorphous three-dimensional network silica gels,which contain nanometer-sized pores.The calcite,silica gels and un-carbonated β-C2S are distributed hierarchically.
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