SwePub
Sök i LIBRIS databas

  Utökad sökning

onr:"swepub:oai:DiVA.org:kth-255414"
 

Sökning: onr:"swepub:oai:DiVA.org:kth-255414" > Measurement of the ...

  • Fadil, HassanKTH,Byggnadsmaterial (författare)

Measurement of the viscoelastic properties of asphalt mortar and its components with indentation tests

  • Artikel/kapitelEngelska2019

Förlag, utgivningsår, omfång ...

  • 2019-07-01
  • TAYLOR & FRANCIS LTD,2019
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:kth-255414
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-255414URI
  • https://doi.org/10.1080/14680629.2019.1628434DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • QC 20190815
  • Reliable determination of material properties is a key component for modelling and performance prediction of asphalt pavements. This paper deals with the potential use of instrumented indentation tests for viscoelastic characterisation of asphalt mortar as a new alternative to existing techniques. The main focus lies on the potential of indentation tests for multi-scale measurement of the shear relaxation modulus. A three-dimensional finite element model of a rigid spherical indenter penetrating an asphalt mortar sample is developed and used to model indentation tests performed at different material scales. The asphalt mortar is modelled as an idealised fine aggregate composite with elastic spheres, suspended within a viscoelastic bitumen mastic matrix. Based on the obtained numerical results the scale-dependency of the shear relaxation modulus measured with the indentation test is investigated. It is shown that the measurement scale is effectively controlled by the size of the indenter-specimen contact area, while the effect of indentation depth is minimal. The minimum contact area size required for obtaining representative properties, measured at the mortar scale, is determined. The viscoelastic parameters obtained from the indentation model are compared to those obtained using a representative volume element (RVE) for the asphalt mortar. In this way, the paper provides a new impulse for linking the mortar and asphalt scales in the multiscale modelling of asphalt mixtures. Feasibility of the proposed testing technique is further evaluated experimentally. Viscoelastic indentation tests are performed on asphalt mastics and mortar at two different sizes of contact areas. Experimental results indicate that indentation tests allow reliable characterisation of mortars relaxation modulus on both macro-scale as well as on individual component level.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Jelagin, Denis,Docent,1979-KTH,Byggnadsmaterial(Swepub:kth)u1mpz2x5 (författare)
  • Larsson, Per-Lennart,1961-KTH,Hållfasthetslära (Avd.)(Swepub:kth)u1us5bjv (författare)
  • Partl, ManfredKTH,Byggnadsmaterial(Swepub:kth)u1t8ihgf (författare)
  • KTHByggnadsmaterial (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:International Journal on Road Materials and Pavement Design: TAYLOR & FRANCIS LTD1468-06292164-7402

Internetlänk

Hitta via bibliotek

Till lärosätets databas

Sök utanför SwePub

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy