Publication detail

Synthetic preparation of thaumasite – several possible routes for thaumasite formation

MASÁROVÁ, A. FRIDRICHOVÁ, M. DVOŘÁK, K.

Original Title

Synthetic preparation of thaumasite – several possible routes for thaumasite formation

Type

conference paper

Language

English

Original Abstract

Presented work is a part of an experiment where limestone is partially replaced by fluidized fly ash during cement manufacturing. Hydration of this type of cement is connected to formation of AFt phases – thaumasite and ettringite that cause serious damage to cement stone. Thaumasite (CaSiO3·CaCO3·CaSO4·15H2O) is less known and less common. It forms especially at lower temperatures. During its growth C-S-H phases are built into thaumasite unite cell, therefore, cement stone decomposes. To preclude thaumasite formation, further research of this mineral is necessary; therefore, its synthetic preparation in sufficient quality is important. The aim of this work was to verify several routes for thaumasite synthetic preparation. In the beginning, burning of mixtures prepared on stoichiometric proportions of compounds in thaumasite was done then two methods used in literature were tried and in the end a new method based on main calcium silicate phases was realized.

Keywords

Sulfate attack; AFt phases; thaumasite; ettringite; cement; X-ray powder diffraction

Authors

MASÁROVÁ, A.; FRIDRICHOVÁ, M.; DVOŘÁK, K.

Released

4. 8. 2016

Publisher

Elsevier

Location

Nizozemí

ISBN

978-1-5108-2855-1

Book

Ecology and New Building Materials and Products 2016

Edition

2016

Edition number

151

ISBN

1877-7058

Periodical

Procedia Engineering

Year of study

151

Number

1

State

Kingdom of the Netherlands

Pages from

313

Pages to

320

Pages count

8

URL

http://www.sciencedirect.com/science/article/pii/S1877705816317441

Full text in the Digital Library

http://hdl.handle.net/11012/204194

BibTex

@inproceedings{BUT127644,
  author="Alexandra {Rybová} and Marcela {Fridrichová} and Karel {Dvořák}",
  title="Synthetic preparation of thaumasite – several possible routes for thaumasite formation",
  booktitle="Ecology and New Building Materials and Products 2016",
  year="2016",
  series="2016",
  journal="Procedia Engineering",
  volume="151",
  number="1",
  pages="313--320",
  publisher="Elsevier",
  address="Nizozemí",
  doi="10.1016/j.proeng.2016.07.356",
  isbn="978-1-5108-2855-1",
  issn="1877-7058",
  url="http://www.sciencedirect.com/science/article/pii/S1877705816317441"
}