Detail publikace

Effect of gel–space ratio and microstructure on strength of hydrating cementitious materials: An engineering micromechanics approach

PICHLER B., HELLMICH CH., EBERHARDSTEINER J., WASSERBAUER J., TERMKHAJORNKIT P., BARBARULO R., CHANVILLARD G.

Originální název

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Strengths of cement pastes with different mixture properties and maturities depend in a very similar overlinear fashion on the gel–space ratio, which is the ratio of the volume of hydration products over the volume of both hydration products and capillary pores. We here investigate the underlying microstructural effects by the experimentally validated micromechanics model of Pichler and Hellmich [CemConRes 41(5), 2011]. This model shows that the macrostrength of cement pastes are not only triggered by the capillary porosity, but also by a strengthening effect of unhydrated clinker - reinforcements - which are embedded as inclusions in the hydrate foam. The analysis is continued with quantifying the strength of the hydrates, in terms of an extended model validation activity. Satisfactory model performance is the motivation to present model predictions for the biaxial compressive failure envelopes of cement pastes, again as a function of gel–space ratio.

Klíčová slova

Compressive strength (C); Micromechanics (C); Cement paste (D); Mortar (E)

Autoři

PICHLER B., HELLMICH CH., EBERHARDSTEINER J., WASSERBAUER J., TERMKHAJORNKIT P., BARBARULO R., CHANVILLARD G.

Rok RIV

2013

Vydáno

1. 3. 2013

Nakladatel

ELSEVIER

Místo

Lausanne, Switzerland

ISSN

0008-8846

Periodikum

Cement and Concrete Research

Ročník

Číslo

Stát

Spojené království Velké Británie a Severního Irska

Strany od

Strany do

Strany počet

BibTex

@article{BUT97880,
  author="Jaromír {Wasserbauer}",
  title="Effect of gel–space ratio and microstructure on strength of hydrating cementitious materials: An engineering micromechanics approach",
  journal="Cement and Concrete Research",
  year="2013",
  volume="45",
  number="3",
  pages="55--68",
  issn="0008-8846"
}