钙铝铁氧体的27Al MAS NMR定量研究

Advanced Cement Based Materials Pub Date : 1998-03-01 DOI:10.1016/S1065-7355(97)00017-5

Jørgen Skibsted , Hans J. Jakobsen , Christopher Hall

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引用次数: 30

摘要

合成钙铝铁素体(Ca2AlxFe2−xO5, x = 0.93, 1,1.33)的27Al MAS NMR谱只显示了预期的27Al中心转变强度的百分之几，表明波特兰水泥中的钙铝铁素体在27Al MAS NMR谱中几乎无法观察到。该结果支持使用27Al MAS NMR对硅酸盐水泥中铝酸三钙相进行定量分析。

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Quantitative Aspects of 27Al MAS NMR of Calcium Aluminoferrites

²⁷Al MAS NMR spectra of synthetic calcium aluminoferrites, Ca₂Al_xFe_2−xO₅ with x = 0.93, 1, 1.33, reveal only a few percent of the expected intensity for the ²⁷Al central transition, indicating that the calcium aluminoferrite phase in Portland cements can barely be observed by ²⁷Al MAS NMR. This result supports the use of ²⁷Al MAS NMR for quantitative analysis of the tricalcium aluminate phase in Portland cements.

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Advanced Cement Based Materials

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