^(29)Si固体核磁共振技术在水泥化学研究中的应用

Application of ^(29)Si Nuclear Magnetic Resonance(NMR) in Research of Cement Chemistry

29Si核磁共振技术常用于研究Si原子核周围的中短程相互作用,与X射线衍射、中子衍射、电子衍射等研究长程整体结构的方法互为补充,在水泥化学的研究当中具有重要的作用。本文从水泥混凝土中硅酸盐物质结构的分析、各种水泥的水化、矿渣的碱激发以及混凝土碱集料反应等方面,通过分析Si原子结构特征在29Si固体核磁共振测试结果中所反映出来的变化,阐述了29Si NMR技术在水泥化学研究中的应用。

^29Si Nuclear Magnetic Resonance （NMR） technology is commonly used in researching the short or medium range interaction around the nucleus of Si atoms, which is an important supplement of the long range structure researching methods such as X-ray diffraction, neutron diffraction, electron diffraction, etc. and it is a powerful tool in the researching work of cement chemistry. Through analyzing the testing results of ^29Si NMR in researching the hydration of various cements, the alkali-activation of slag, and the alkali-aggregate reactions of concrete, the application of ^29Si NMR technology in cement chemistry was introduced in this paper.