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Experimental and numerical analysis of asphalt flow in a slump test
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Byggnadsmaterial.ORCID-id: 0000-0001-9504-2008
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Byggnadsmaterial.
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Byggnadsmaterial. EMPA–Swiss Federal Laboratories for Materials Science and Technology, Duebendorf, Switzerland.
2019 (engelsk)Inngår i: International Journal on Road Materials and Pavement Design, ISSN 1468-0629, E-ISSN 2164-7402, Vol. 20, s. S446-S461Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The mechanical behaviour of uncompacted asphalt mixtures is still not well understood,threatening directly to the pavement practices such as control of mixture’s workability andsegregation. This situation may become even worse due to the gradually increasing complexityand advances in paving materials and technologies. This study adopts a slump flow testbased on concrete technology and a Discrete Element (DE)-based numerical tool to investigatethe mechanical behaviour of uncompacted asphalt mixture from a microstructural point ofview, particularly focusing on the bituminous binder effects. The combined experimental andnumerical analysis indicates that bitumen distinctly influences the contact interactions withinthe mixture and thus its macroscopic flow, which can be physically interpreted as a combinedeffect of lubricated friction and bonding force. Additional case studies demonstrate that the DEmodel is capable of simulating the flow response of asphalt mixtures under changed particlecontact conditions and driven force.

sted, utgiver, år, opplag, sider
Taylor & Francis, 2019. Vol. 20, s. S446-S461
Emneord [en]
Asphalt mixture; slump test; discrete element method; large displacement
HSV kategori
Forskningsprogram
Byggvetenskap
Identifikatorer
URN: urn:nbn:se:kth:diva-246052DOI: 10.1080/14680629.2019.1587495ISI: 000468539800028Scopus ID: 2-s2.0-85062715193OAI: oai:DiVA.org:kth-246052DiVA, id: diva2:1295536
Forskningsfinansiär
Swedish Research Council Formas, 2012-1349
Merknad

QC 20190319

Tilgjengelig fra: 2019-03-12 Laget: 2019-03-12 Sist oppdatert: 2019-06-24bibliografisk kontrollert

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