undefined

Quasi-brittle porous material : simulated effect of stochastic air void structure on compressive strength

Year of publication

2021

Authors

Erkkilä, Anna-Leena; Leppänen, Teemu; Virkajärvi, Jussi; Parkkonen, Joni; Turunen, Leena; Tuovinen, Tero

Abstract

The effect of porosity comprised of spherical air voids on the compressive strength of quasi-brittle material was studied via simulations. The simulated porous structures were based on pore size distributions of two mortar samples measured by X-ray microtomography. While the simulation method set practical limits on the size of sample, the base of the statistics was established by simulating 128 small structures generated by sampling from pore structures of two mortars. By studying the application of the classical strength-porosity formulas to the simulated data, a new simple model was formed. A linear relationship was achieved between the cubic root of air void fraction (porosity) and the simulated compressive strength. The reasons for scattering of simulated strength around fitted trend remained unresolved in this study; no clear dependence on pore number or other distribution properties was observed. With the presented simulation approach, the dependence of compressive strength on porosity is achieved independently of disturbances that occur in experimental studies creating understanding of compressional behavior of low porosity materials.
Show more

Organizations and authors

University of Jyväskylä

Erkkilä Anna-Leena Orcid -palvelun logo

Virkajärvi Jussi Orcid -palvelun logo

Parkkonen Joni

Leppänen Teemu

JAMK University of Applied Sciences

Tuovinen Tero Orcid -palvelun logo

Turunen Leena

Publication type

Publication format

Article

Parent publication type

Journal

Article type

Original article

Audience

Scientific

Peer-reviewed

Peer-Reviewed

MINEDU's publication type classification code

A1 Journal article (refereed), original research

Publication channel information

Publisher

Elsevier

Volume

139

Article number

106255

​Publication forum

53226

​Publication forum level

3

Open access

Open access in the publisher’s service

No

Self-archived

Yes

Other information

Fields of science

Computer and information sciences; Physical sciences; Materials engineering

Keywords

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Publication country

United Kingdom

Internationality of the publisher

International

Language

English

International co-publication

No

Co-publication with a company

No

DOI

10.1016/j.cemconres.2020.106255

The publication is included in the Ministry of Education and Culture’s Publication data collection

Yes