Fine particles

A fracture mechanical approach

Anna Kronlöf

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

The work is a closer analysis of Kronlöf’s earlier work [1994] and thesis [1997]. It is also related to Björn Lagerblad’s and Carsten Vogt’s work [2004] as well as Vogt’s theses [2010], all dealing with the unexplained substantial strengthening in the presence of large amounts of fine quartz. In this analysis the strengthening effect was up to 20 MPa but could be also negative. At the age of 7 days the effect depended on the average distance between particles as well as on the water to binder ratio, while at the age of 91 days it only depended on the average distance, being independent of the water to binder ratio over the wide range from 0.22 to 2.0. It was concluded that in the later case the effect was mechanical. An empirical model was made and fracture mechanical explanation given to describe the strengthening effect.
Original languageEnglish
Title of host publicationXXI Nordic Concrete Research Symposia
Place of PublicationVodskov
PublisherNorsk Betongforening
Pages229-232
Publication statusPublished - 2011
MoE publication typeA4 Article in a conference publication
EventXXI Nordic Concrete Research Symposium - Hotel Rantasipi Aulanko, Hämeenlinna, Finland
Duration: 30 May 20111 Jun 2011

Conference

ConferenceXXI Nordic Concrete Research Symposium
CountryFinland
CityHämeenlinna
Period30/05/111/06/11

Fingerprint

Binders
Water
Quartz

Keywords

  • fracture mechanics
  • modelling
  • filler effect
  • optimising OPC content
  • compressive strength
  • fine particles

Cite this

Kronlöf, A. (2011). Fine particles: A fracture mechanical approach. In XXI Nordic Concrete Research Symposia (pp. 229-232). Vodskov: Norsk Betongforening. Nordic Concrete Research, Vol.. 43
Kronlöf, Anna. / Fine particles : A fracture mechanical approach. XXI Nordic Concrete Research Symposia. Vodskov : Norsk Betongforening, 2011. pp. 229-232 (Nordic Concrete Research, Vol. 43).
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Kronlöf, A 2011, Fine particles: A fracture mechanical approach. in XXI Nordic Concrete Research Symposia. Norsk Betongforening, Vodskov, Nordic Concrete Research, vol. 43, pp. 229-232, XXI Nordic Concrete Research Symposium, Hämeenlinna, Finland, 30/05/11.

Fine particles : A fracture mechanical approach. / Kronlöf, Anna.

XXI Nordic Concrete Research Symposia. Vodskov : Norsk Betongforening, 2011. p. 229-232 (Nordic Concrete Research, Vol. 43).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AB - The work is a closer analysis of Kronlöf’s earlier work [1994] and thesis [1997]. It is also related to Björn Lagerblad’s and Carsten Vogt’s work [2004] as well as Vogt’s theses [2010], all dealing with the unexplained substantial strengthening in the presence of large amounts of fine quartz. In this analysis the strengthening effect was up to 20 MPa but could be also negative. At the age of 7 days the effect depended on the average distance between particles as well as on the water to binder ratio, while at the age of 91 days it only depended on the average distance, being independent of the water to binder ratio over the wide range from 0.22 to 2.0. It was concluded that in the later case the effect was mechanical. An empirical model was made and fracture mechanical explanation given to describe the strengthening effect.

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Kronlöf A. Fine particles: A fracture mechanical approach. In XXI Nordic Concrete Research Symposia. Vodskov: Norsk Betongforening. 2011. p. 229-232. (Nordic Concrete Research, Vol. 43).