Publication detail

In situ characterization of main reaction products in alkali-activated slag materials by Confocal Raman Microscopy

MIKHAILOVA, O. DEL CAMPO, A. ROVNANÍK, P. FERNÁNDEZ, J. TORRES-CARRASCO, M.

Original Title

In situ characterization of main reaction products in alkali-activated slag materials by Confocal Raman Microscopy

Type

journal article in Web of Science

Language

English

Original Abstract

The re-use of different aluminosilicates, such as blast furnace slag, in the preparation of alternative binders (alkaliactivated materials) to Portland cement materials is well document and evaluated by conventional techniques. The use of XRD, FTIR and TG techniques allows obtaining information about the hydration products formed under the conditions of alkaline activation. The formation of the main reaction product (C-A-S-H gel), due to its low crystallinity, is not easily stablished by XRD or FTIR, and it is also quite complex to obtain quantitative information. Confocal Raman Microscopy (CRM) technique reveals information of each of the present phases during the slag activation and in particular. Moreover, CRM provide the evolution of C-A-S-H gel confirming that the growth of the C-A-S-H gel in activate alkaline-systems is different from that an Ordinary Portland Cement system. C-A-S-H gel grows randomly in the regions rich in calcium and silicon. The use of CRM opens a new possibility for the in situ study of complex systems such as the activation of alkali-activated or geopolymers in the search for alternative materials to Portland cement.

Keywords

alkali activated slag; Confocal Raman Microscopy (CRM); C-A-S-H gel; characterization

Authors

MIKHAILOVA, O.; DEL CAMPO, A.; ROVNANÍK, P.; FERNÁNDEZ, J.; TORRES-CARRASCO, M.

Released

11. 2. 2019

Publisher

ELSEVIER

ISBN

0958-9465

Periodical

CEMENT & CONCRETE COMPOSITES

Year of study

99

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

32

Pages to

39

Pages count

8

URL

https://doi.org/10.1016/j.cemconcomp.2019.02.004

BibTex

@article{BUT155571,
  author="Olesia {Mikhailova} and A. {del Campo} and Pavel {Rovnaník} and J.F. {Fernández} and M. {Torres-Carrasco}",
  title="In situ characterization of main reaction products in alkali-activated slag materials by Confocal Raman Microscopy",
  journal="CEMENT & CONCRETE COMPOSITES",
  year="2019",
  volume="99",
  number="1",
  pages="32--39",
  doi="10.1016/j.cemconcomp.2019.02.004",
  issn="0958-9465",
  url="https://doi.org/10.1016/j.cemconcomp.2019.02.004"
}