Studies on guest-ion incorporation in Portland cement – Part 1

Solid-state NMR spectroscopy is a valuable tool for detection and structural characterization of minor elements incorporated in the principal phases of Portland cement. Depending on the arrangement of these guest-ions, the physical and chemical properties of the materials can be influenced. Part 1 of this article shows the experimental research methods and details.

1 Introduction

Nuclear Magnetic Resonance (NMR) techniques have been increasingly employed in studies of cementitious materials over the last three decades [1-3]. The main advantages of the basic method are the nuclear-spin selectivity, where only one nuclear-spin isotope of the NMR periodic table (for example 1H, 19F, 27Al, 29Si and 35Cl) is detected at a time [2,4], and the fact that the resonances from these spins reflect local structure and/or dynamic effects. Amorphous and crystalline phases are equally detected, thereby complementing diffraction techniques which probe long-range order....

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