Detail publikačního výsledku

Immobilization of Heavy Metals in Natural Zeolite-blended Cement Pastes

VYŠVAŘIL, M.; BAYER, P.

Originální název

Immobilization of Heavy Metals in Natural Zeolite-blended Cement Pastes

Anglický název

Immobilization of Heavy Metals in Natural Zeolite-blended Cement Pastes

Druh

Článek WoS

Originální abstrakt

This paper deals with the investigation of efficiency of natural zeolite-blended cement pastes for the immobilization of heavy metals. Natural zeolite was used to partially replace ordinary Portland cement (OPC) at rates of 0% and 20% by weight of a binder and soluble heavy metal salts were added to a mixing water in an amount of 1% and 5% by weight of the binder. The flexural and compressive strength of the cement pastes were investigated, while the leachability of the heavy metals was determined. Additionally, scanning electron microscopy was performed to investigate the microstructure of the cement pastes, while the pore size distribution was analyzed with mercury intrusion porosimetry. The results indicated that the flexural and compressive strengths of the pastes containing 20 wt.% of natural zeolite were higher than those with OPC alone. It was also found out that the effectiveness in reducing the leachability of Ba, Cd, Cu, Ni and Pb was better for the natural zeolite-blended cement pastes.

Anglický abstrakt

This paper deals with the investigation of efficiency of natural zeolite-blended cement pastes for the immobilization of heavy metals. Natural zeolite was used to partially replace ordinary Portland cement (OPC) at rates of 0% and 20% by weight of a binder and soluble heavy metal salts were added to a mixing water in an amount of 1% and 5% by weight of the binder. The flexural and compressive strength of the cement pastes were investigated, while the leachability of the heavy metals was determined. Additionally, scanning electron microscopy was performed to investigate the microstructure of the cement pastes, while the pore size distribution was analyzed with mercury intrusion porosimetry. The results indicated that the flexural and compressive strengths of the pastes containing 20 wt.% of natural zeolite were higher than those with OPC alone. It was also found out that the effectiveness in reducing the leachability of Ba, Cd, Cu, Ni and Pb was better for the natural zeolite-blended cement pastes.

Klíčová slova

cement paste; heavy metals; immobilization; microstructure; porosity; strength; zeolite

Klíčová slova v angličtině

cement paste; heavy metals; immobilization; microstructure; porosity; strength; zeolite

Autoři

VYŠVAŘIL, M.; BAYER, P.

Rok RIV

2017

Vydáno

26.09.2016

Nakladatel

Elsevier

ISSN

1877-7058

Periodikum

Procedia Engineering

Svazek

151

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

162

Strany do

169

Strany počet

8

URL

https://www.sciencedirect.com/science/article/pii/S1877705816317519

Plný text v Digitální knihovně

http://hdl.handle.net/11012/203151

BibTex

@article{BUT128673,
  author="Martin {Vyšvařil} and Patrik {Bayer}",
  title="Immobilization of Heavy Metals in Natural Zeolite-blended Cement Pastes",
  journal="Procedia Engineering",
  year="2016",
  volume="151",
  number="1",
  pages="162--169",
  doi="10.1016/j.proeng.2016.07.363",
  url="https://www.sciencedirect.com/science/article/pii/S1877705816317519"
}

Dokumenty

1-s2.0-S1877705816317519-main