A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Quasi-brittle porous material : simulated effect of stochastic air void structure on compressive strength (2021)
Erkkilä, A.-L., Leppänen, T., Virkajärvi, J., Parkkonen, J., Turunen, L., & Tuovinen, T. (2021). Quasi-brittle porous material : simulated effect of stochastic air void structure on compressive strength. Cement and Concrete Research, 139, Article 106255. https://doi.org/10.1016/j.cemconres.2020.106255
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Erkkilä, Anna-Leena; Leppänen, Teemu; Virkajärvi, Jussi; Parkkonen, Joni; Turunen, Leena; Tuovinen, Tero
Lehti tai sarja: Cement and Concrete Research
ISSN: 0008-8846
eISSN: 1873-3948
Julkaisuvuosi: 2021
Volyymi: 139
Artikkelinumero: 106255
Kustantaja: Elsevier
Julkaisumaa: Britannia
Julkaisun kieli: englanti
DOI: https://doi.org/10.1016/j.cemconres.2020.106255
Julkaisun avoin saatavuus: Ei avoin
Julkaisukanavan avoin saatavuus:
Tiivistelmä
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.
YSO-asiasanat: materiaalitekniikka; laasti; huokoisuus; puristuslujuus; simulointi; mallit (mallintaminen); elementtimenetelmä
Vapaat asiasanat: porosity; mortar; compressive strength; finite element method; simulation; model
Liittyvät organisaatiot
OKM-raportointi: Kyllä
Raportointivuosi: 2021
JUFO-taso: 3