^(29)Si、^(27)Al固体核磁共振在水泥基材料中的应用进展

Application progress of solid ^(29)Si,^(27)Al NMR in the research of cement-based materials

固体核磁共振技术是当前研究水泥基材料结构的一个有效手段,采用^(29)Si、^(27)Al核磁共振技术研究水泥基材料水化产物结构,已成为当前水泥化学方面研究的热点之一。本文介绍了固体核磁共振技术的基本原理及相关影响条件、基本参数,调研了^(29)Si、^(27)Al的核磁共振技术参数及与水泥基材料水化结构之间的关系,综述了国内外同行利用^(29)Si、^(27)Al固体核磁共振技术研究水泥基材料主要水化产物C-S-H以及水化硫铝酸钙结构的相关成果,对其中存在的问题进行了分析,并展望了其征水泥基材料研究中的发展趋势。

Background： The solid-state Nuclear Magnetic Resonance （NMR） is an effective method for the research of cement-based materials. Now it focuses on using solid ^29Si and ^27A1 NMR to research the hydration structure of the cement-based materials in cement chemistry. Purpose： A theoretical guidance is proposed for solid ^29Si and ^27A1 NMR technology used in cement chemistry research. Methods： We reviewed the application of solid ^29Si and ^27A1 NMR in the cement-based materials and analyzed the problem among the researches. Results： This paper introduced an fundamental, relevant-conditions and basic parameters of NMR, and studied the technical parameters of solid ^29Si and ^27A1 NMR together with the relationship among the hydration structure of cement-based material. Moreover, this paper reviewed the related domestic and overseas achievements in the research of hydration structure of the cement-based materials using solid ^29Si and ^27A1 NMR. Conclusion： There were some problems in the research on cement-based materials by technology of solid ^29Si and ^27A1 NMR. NMR will promote the Hydration theory of cement-based material greatly.