Detail publikace

Physico-mechanical and microstructural properties of rehydrated blended cement pastes

VYŠVAŘIL, M. BAYER, P. CHROMÁ, M. ROVNANÍKOVÁ, P.

Originální název

Physico-mechanical and microstructural properties of rehydrated blended cement pastes

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

This study aims to investigate the effect of high temperatures of up to 1200 C and rehydration on the mechanical properties, microstructure and phase composition of blended cement pastes prepared from Portland cement (PC), granulated blast furnace slag (GBFS), high-temperature fly ash (FA) and ground limestone (GL). It has been found that the heating process induces a reduction in bulk density, flexural and compressive strength. The proportion of pores with a diameter higher than 0.1 micrometer increases with increasing temperature. The addition of GBFS or FA improves the strength properties of dehydrated cement paste (DCP), but this effect was not observed after rehydration. Cement paste with added GBFS has the best resistivity to high temperatures, but after rehydration, GL cement paste shows better mechanical properties.

Klíčová slova

cement paste; rehydration; strength; porosity; microstructure

Autoři

VYŠVAŘIL, M.; BAYER, P.; CHROMÁ, M.; ROVNANÍKOVÁ, P.

Rok RIV

2014

Vydáno

15. 3. 2014

ISSN

0950-0618

Periodikum

Construction and building materials

Ročník

2014

Číslo

54

Stát

Spojené království Velké Británie a Severního Irska

Strany od

413

Strany do

420

Strany počet

8

BibTex

@article{BUT107712,
  author="Martin {Vyšvařil} and Patrik {Bayer} and Markéta {Rovnaníková} and Pavla {Rovnaníková}",
  title="Physico-mechanical and microstructural properties of rehydrated blended cement pastes",
  journal="Construction and building materials",
  year="2014",
  volume="2014",
  number="54",
  pages="413--420",
  issn="0950-0618"
}