Detail publikačního výsledku

Pore structure analysis of Portland cement and blended Portland cements cured under hydrothermal conditions cements cured under hydrothermal conditions

IFKA, T.; PALOU, M.; KULIFFAYOVÁ, M.; BOHÁČ, M.; FRAJKOROVÁ, F.; BÁGEĽ, Ľ.

Originální název

Pore structure analysis of Portland cement and blended Portland cements cured under hydrothermal conditions cements cured under hydrothermal conditions

Anglický název

Pore structure analysis of Portland cement and blended Portland cements cured under hydrothermal conditions cements cured under hydrothermal conditions

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

The pore structure of Portland cement pastes cured under different hydrothermal regimes was analyzed. Pore size distribution (PSD), hydraulic permeability coefficient (HK) and porosity (P) were found depending on temperature and steam pressure. With increasing hydrothermal characteristics, the pore structures degraded causing the depletion in compressive strength. Then, blast furnace slag (BFS) and silica fume (SF) were added to PC and cured under similar conditions. It was found that the pore structure was greatly improved. The effect of hydrothermal curing may be interpreted by the intensity and position of the peak, by the length and bimodal characteristic of PSD. The maximum concentration of pores of reference cement paste lies in the range 10 – 103 nm, and changes progressively to the size < 10 nm with increasing addition of BFS and SF. This behavior is attributed mainly to the presence of SF. Microstructure analysis shows hydrate products like needle CSH and CASH, which were stable under hydrothermal curing.

Anglický abstrakt

The pore structure of Portland cement pastes cured under different hydrothermal regimes was analyzed. Pore size distribution (PSD), hydraulic permeability coefficient (HK) and porosity (P) were found depending on temperature and steam pressure. With increasing hydrothermal characteristics, the pore structures degraded causing the depletion in compressive strength. Then, blast furnace slag (BFS) and silica fume (SF) were added to PC and cured under similar conditions. It was found that the pore structure was greatly improved. The effect of hydrothermal curing may be interpreted by the intensity and position of the peak, by the length and bimodal characteristic of PSD. The maximum concentration of pores of reference cement paste lies in the range 10 – 103 nm, and changes progressively to the size < 10 nm with increasing addition of BFS and SF. This behavior is attributed mainly to the presence of SF. Microstructure analysis shows hydrate products like needle CSH and CASH, which were stable under hydrothermal curing.

Klíčová slova

Portland cement, hydrothermal curing, pore structure, microstructure

Klíčová slova v angličtině

Portland cement, hydrothermal curing, pore structure, microstructure

Autoři

IFKA, T.; PALOU, M.; KULIFFAYOVÁ, M.; BOHÁČ, M.; FRAJKOROVÁ, F.; BÁGEĽ, Ľ.

Rok RIV

2016

Vydáno

01.09.2014

Kniha

Ecology and New Building Materials and Products

ISSN

1022-6680

Periodikum

Advanced Materials Research

Svazek

2014

Číslo

1000

Stát

Švýcarská konfederace

Strany od

235

Strany do

238

Strany počet

4

Plný text v Digitální knihovně

http://hdl.handle.net/

BibTex

@inproceedings{BUT109393,
  author="Tomáš {Ifka} and Martin {Palou} and Marta {Kuliffayová} and Martin {Boháč} and Františka {Frajkorová} and Ľubomír {Bágeľ}",
  title="Pore structure analysis of Portland cement and blended Portland cements cured under hydrothermal conditions cements cured under hydrothermal conditions",
  booktitle="Ecology and New Building Materials and Products",
  year="2014",
  journal="Advanced Materials Research",
  volume="2014",
  number="1000",
  pages="235--238",
  doi="10.4028/www.scientific.net/AMR.1000.235",
  issn="1022-6680"
}