Publication detail

Dry pressed ceramic tiles based on fly ash-clay body: influence of fly ash granulometry and pentasodium triphosphate addition

SOKOLÁŘ, R. SMETANOVÁ, L.

Original Title

Dry pressed ceramic tiles based on fly ash-clay body: influence of fly ash granulometry and pentasodium triphosphate addition

Type

journal article - other

Language

English

Original Abstract

Fly ash from brown coal (70 wt.%) and stoneware clay (30 wt.%) were used for the dry pressed ceramic tiles (according to EN 14411) raw materials mixture. The effects of fly ash milling and pentasodium triphosphate addition as a deflocculant and fluxing agent on the properties of green body (flexural strength, bulk density) and fired body (EN ISO 10545 - water absorption, bulk density, true density, apparent porosity, flexural strength, frost resistance) were studied and explained as a function of the firing temperature (1000 - 1150 oC). Fly ash milling (corresponding to 5 wt.% residue of fly ash grains on 0.063 mm sieve) increased the sintering abilities of the fly ash - clay body. A similar effect was achieved by 1.3 wt.% pentasodium triphosphate (PST) addition with an increase in green body flexural strength and a decrease in water content of the granulate. Fly ash-clay bodies can be frost resistant with water absorption above 10 % thanks to positive pore size distribution, which were examined using the high pressure mercury porosimetry method.

Keywords

ceramic tiles, fly ash, granulometry, pentasodium triphosphate, frost resistence, pore structure

Authors

SOKOLÁŘ, R.; SMETANOVÁ, L.

RIV year

2010

Released

5. 1. 2010

Publisher

Elsevier

Location

Faenza

ISBN

0272-8842

Periodical

Ceramics International

Year of study

38

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

215

Pages to

221

Pages count

7

BibTex

@article{BUT48503,
  author="Radomír {Sokolář} and Lenka {Smetanová}",
  title="Dry pressed ceramic tiles based on fly ash-clay body: influence of fly ash granulometry and pentasodium triphosphate addition",
  journal="Ceramics International",
  year="2010",
  volume="38",
  number="1",
  pages="215--221",
  issn="0272-8842"
}