Detail publikace

Novel SCM produced by the co-calcination of aluminosilicates with dolomite

F.Bullerjahn, M.Zajac, J.Pekarkova, D.Nied

Originální název

Novel SCM produced by the co-calcination of aluminosilicates with dolomite

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

In this work, a novel type of supplementary cementitious material (SCM), produced by the calcination of aluminosilicate such as clays and micas in the presence of dolomite, is investigated. The thermal activation was assessed at different calcination temperatures. The activity of the produced SCM was tested in combination with Portland cement in paste and mortar. The compressive strength results demonstrate that the novel SCM out-performs all tested state of the art references. The cause for the improved reactivity is associated with the formation of poorly crystalline, reactive calcium and magnesium-rich phases such as free lime, periclase, melilite, dicalcium silicate, calcium aluminates and ferrites during the calcination. The hydration study of the different composite cements demonstrates that the presence of the novel SCM results in a higher quantity of portlandite formed, the stabilisation of ettringite over monosulfate and the formation of strätlingite together with hemicarboaluminate.

Klíčová slova

Thermal activation, Mineralogy, Pozzolanic activity, Composite cement hydration

Autoři

F.Bullerjahn, M.Zajac, J.Pekarkova, D.Nied

Vydáno

1. 8. 2020

Nakladatel

Elsevier Ltd

ISSN

0008-8846

Periodikum

Cement and Concrete Research

Ročník

134

Stát

Spojené království Velké Británie a Severního Irska

Strany od

2

Strany do

18

Strany počet

17

URL

https://www.sciencedirect.com/science/article/abs/pii/S0008884619317405

BibTex

@article{BUT164165,
  author="Jana {Pekárková}",
  title="Novel SCM produced by the co-calcination of aluminosilicates with dolomite",
  journal="Cement and Concrete Research",
  year="2020",
  volume="134",
  number="0",
  pages="2--18",
  doi="10.1016/j.cemconres.2020.106083",
  issn="0008-8846",
  url="https://www.sciencedirect.com/science/article/abs/pii/S0008884619317405"
}