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....

Related articles:

Issue 2013-06

Studies on guest-ion incorporation in Portland cement – Part 2

4 Aluminum and sulphur guest-ions in alite and belite Limestone is increasingly being used as an additive to Portland cement [22] where a part of it will react with the hydrating aluminate species,...

more
Issue 2019-3 US 10 167 420 B1

Loss circulation compositions (LCM) having Portland cement clinker

(22) 19.10.2017 (45) 01.01.2019 (57) Portland cement clinker LCMs that include Portland cement clinker to mitigate or prevent lost circulation in a well are provided. A Portland cement clinker LCM may...

more
Issue 2022-5 WO 2022/095515 A1

Portland cement clinker and preparation method therefor

(22) 29.07.2021 (43) 12.05.2022          (57) The present invention discloses a Portland cement clinker and a preparation method therefor. M1 type alite accounts for 99% or more of the mass...

more
Issue 2021-1 WO 2020/214653 A1

Proppant compositions having Portland cement clinker and methods of use

(22) 15.04.2020 (43) 22.10.2020 (57) Proppant compositions for hydraulic fracturing that include Portland cement clinker are provided. A cement clinker proppant composition for hydraulic fracturing...

more
Issue 2022-1 US 11 180 414 B1

Synthesis of cement­less fly ash based binders and applications thereof

(22) 05.09.2019 (45) 23.11.2021 (57) Novel binder compositions have been discovered that offer an alternative to Portland Cement and reduced carbon dioxide footprint. The compositions typically...

more