Detail publikace

EFFECT OF SODIUM PHOSPHATES FOR THE FLY ASH-CLAY BODY MICROSTRUCTURE FORMATION

SOKOLÁŘ, R. SMETANOVÁ, L.

Originální název

EFFECT OF SODIUM PHOSPHATES FOR THE FLY ASH-CLAY BODY MICROSTRUCTURE FORMATION

Anglický název

EFFECT OF SODIUM PHOSPHATES FOR THE FLY ASH-CLAY BODY MICROSTRUCTURE FORMATION

Jazyk

en

Originální abstrakt

This paper describes influence of different sodium phosphates (tetrasodium diphosphate, sodium hexametaphosphate , pentasodium triphosphate on fly ash - clay suspensions deflocculation in comparison with the sodium water glass deflocculation effect. It was determined an optimal water content (with and without utilization of tetrasodium diphosphate) to get a maximal compact green body (in virtue of minimal green body bending strength 2 MPa). In next part was studied the effect of 1,8 %-mass tetrasodium diphosphate addition on the properties of the fired fly ash - clay bodies (1000 - 1050 - 1100 - 1150 oC) according to EN ISO 10545 standards for dry pressed ceramic tiles (e.g. water absorption, bending strength, frost resistance) and properties of the fly ash fired body microstructure (distribution of pore radius and resulting indirect determination of frost resistance according to Maages, Bentrups and Frankes models, REM). Used tetrasodium diphosphate decreased of firing temperature (very intensive fluxing agent) and pressing water content and increased of fired and green body strength. Fired fly ash bodies shown very advantageous porous structure, which gives expectations of frost resistance these bodies already at lowest firing temperature corresponding to bodies of porous wall tiles (group BIII according to EN 14411), that are in presents specified like not frost resistant use only in interior for wall tiles.

Anglický abstrakt

This paper describes influence of different sodium phosphates (tetrasodium diphosphate, sodium hexametaphosphate , pentasodium triphosphate on fly ash - clay suspensions deflocculation in comparison with the sodium water glass deflocculation effect. It was determined an optimal water content (with and without utilization of tetrasodium diphosphate) to get a maximal compact green body (in virtue of minimal green body bending strength 2 MPa). In next part was studied the effect of 1,8 %-mass tetrasodium diphosphate addition on the properties of the fired fly ash - clay bodies (1000 - 1050 - 1100 - 1150 oC) according to EN ISO 10545 standards for dry pressed ceramic tiles (e.g. water absorption, bending strength, frost resistance) and properties of the fly ash fired body microstructure (distribution of pore radius and resulting indirect determination of frost resistance according to Maages, Bentrups and Frankes models, REM). Used tetrasodium diphosphate decreased of firing temperature (very intensive fluxing agent) and pressing water content and increased of fired and green body strength. Fired fly ash bodies shown very advantageous porous structure, which gives expectations of frost resistance these bodies already at lowest firing temperature corresponding to bodies of porous wall tiles (group BIII according to EN 14411), that are in presents specified like not frost resistant use only in interior for wall tiles.

Dokumenty

BibTex


@inproceedings{BUT28304,
  author="Radomír {Sokolář} and Lenka {Smetanová}",
  title="EFFECT OF SODIUM PHOSPHATES FOR THE FLY ASH-CLAY BODY MICROSTRUCTURE FORMATION",
  annote="This paper describes influence of different sodium phosphates (tetrasodium diphosphate, sodium hexametaphosphate , pentasodium triphosphate on fly ash - clay suspensions deflocculation in comparison with the sodium water glass deflocculation effect. It was determined an optimal water content (with and without utilization of tetrasodium diphosphate) to get a maximal compact green body (in virtue of minimal green body bending strength 2 MPa). In next part was studied the effect of 1,8 %-mass tetrasodium diphosphate addition on the properties of the fired fly ash - clay bodies (1000 - 1050 - 1100 - 1150 oC) according to EN ISO 10545 standards for dry pressed ceramic tiles (e.g. water absorption, bending strength, frost resistance) and properties of the fly ash fired body microstructure (distribution of pore radius and resulting indirect determination of frost resistance according to Maages, Bentrups and Frankes models, REM). Used tetrasodium diphosphate decreased of firing temperature (very intensive fluxing agent) and pressing water content and increased of fired and green body strength. Fired fly ash bodies shown very advantageous porous structure, which gives expectations of frost resistance these bodies already at lowest firing temperature corresponding to bodies of porous wall tiles (group BIII according to EN 14411), that are in presents specified like not frost resistant use only in interior for wall tiles.",
  address="Silichem",
  booktitle="Silichem 2007",
  chapter="28304",
  edition="1",
  institution="Silichem",
  year="2007",
  month="september",
  pages="58--59",
  publisher="Silichem",
  type="conference paper"
}