Fine particles: A fracture mechanical approach

Anna Kronlöf

Fine particles: A fracture mechanical approach

Anna Kronlöf

VTT Technical Research Centre of Finland

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-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 language	English
Title of host publication	XXI Nordic Concrete Research Symposia
Place of Publication	Vodskov
Publisher	Norsk Betongforening
Pages	229-232
Publication status	Published - 2011
MoE publication type	A4 Article in a conference publication
Event	XXI Nordic Concrete Research Symposium - Hotel Rantasipi Aulanko, Hämeenlinna, Finland Duration: 30 May 2011 → 1 Jun 2011

Publication series

Series	Nordic Concrete Research
Volume	43
ISSN	0800-6377

Conference

Conference	XXI Nordic Concrete Research Symposium
Country	Finland
City	Hämeenlinna
Period	30/05/11 → 1/06/11

Keywords

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

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Kronlöf, A. (2011). Fine particles: A fracture mechanical approach. In XXI Nordic Concrete Research Symposia (pp. 229-232). Norsk Betongforening. Nordic Concrete Research, Vol.. 43 https://nordicconcrete.net/wp-content/uploads/2011/01/Vol-43-Proceedings-Finland-2011.pdf

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keywords = "fracture mechanics, modelling, filler effect, optimising OPC content, compressive strength, fine particles",

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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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KW - compressive strength

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