Cement hydration kinetics followed by electron spin resonance

被引：0

作者：

Sauskojus, Wolfgang ^{[1
]}

Pritzel, Christian ^{[2
]}

Trettin, Reinhard H. F. ^{[2
]}

Der Guenne, Jorn Schmedt auf ^{[1
]}

机构：

[1] Univ Siegen, Dept Chem & Biol, Inorgan Mat Chem, Adolf Reichwein Str 2, D-57076 Siegen, Germany

[2] Univ Siegen, Inst Bldg & Mat Chem, Dept Chem & Biol, Paul Bonatz Str 9-11, D-57076 Siegen, Germany

来源：

CEMENT AND CONCRETE RESEARCH | 2024年 / 181卷

关键词：

Tricalcium silicate; C3S; Ca3SiO5; ESR; Hydration; Kinetics; Portland cement; Mn2+; TRICALCIUM SILICATE; PARAMAGNETIC-RESONANCE; ESR-SPECTRUM; MANGANESE CONCENTRATION; DICALCIUM SILICATES; CALCIUM-OXIDE; MN2+; DISSOLUTION; SOLUBILITY; MECHANISM;

D O I：

10.1016/j.cemconres.2024.107548

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Cement hydration is driven by a complex system of chemical reactions of several hydraulic binders and water that influence each other. Here we establish a method to measure the hydration kinetics of an individual clinker phase by electron spin resonance spectroscopy. The hydration of a Mn(II) doped crystalline phase can be analyzed from the decay of signals coming from the starting material and the formed product. Transformation times can be determined by modeling the time series of the signal intensities. The host of the dopant could be identified by combining evidence from different analytical techniques including diffraction and electron microscopy. The results about the reaction kinetics are compared to those obtained from caloric measurements. The method opens a way to study the hydration of different hydraulic binders in complex systems selectively, which includes the determination of induction periods and transformation times from in-situ measurements.

引用

页数：9

共 56 条

[51]

Trettin R., 1986, Silikattechnik, V37, P75

[52] INVESTIGATIONS ON BELITES AND DICALCIUM SILICATES .2. ON THE CHANGES OF PHASES, VALENCY, AND REACTIVITY DURING HEAT-TREATMENT OF MN-DOPED CA2SIO4 [J].