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Influence of layer thickness on the flow of asphalt under simulated compaction
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Byggnadsmaterial.ORCID-id: 0000-0002-5526-5896
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Byggnadsmaterial.
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Byggnadsmaterial.
2018 (Engelska)Ingår i: Bearing Capacity of Roads, Railways and Airfields - Proceedings of the 10th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCRRA 2017, CRC Press/Balkema , 2018, s. 1435-1441Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Compaction is one of the most important phases in the life cycle of asphalt pavements and has therefore been a hot subject of research for a long time. However, despite of valuable research efforts on this topic, a remarkable gap between laboratory and field measurements still remains. Moreover, whereas most of the experimental methods are carried out on compacted pavement material, methods for evaluating compactability of asphalt mixtures for increasing the fundamental knowledge about internal movements within the asphalt during compaction are only scarce. Hence, in this study, a recently developed tool for simulating the compaction process with respect to the particle flow, i.e. Compaction Flow Test (CFT), was used along with simultaneous X-ray imaging for investigating the impact of thickness changes on two different asphalt mixture structures in terms of the compaction effort as well as flow pattern differences. The results of the investigation provided reasonably useful input for building up a better understanding of the behavior of mixtures under compaction loads. This method was able to successfully reveal the differences of the structural rearrangements within the asphalt mixtures for three different lift thicknesses. It also helped to explain some of the previous research studies results in a more comprehensive way. The achievements of this study may serve for developing an in-site evaluating test method for assessing compactability of asphalt mixtures before placing them on the roads.

Ort, förlag, år, upplaga, sidor
CRC Press/Balkema , 2018. s. 1435-1441
Nyckelord [en]
Compactability, Lift thickness, Particle flow, X-ray computed tomography, Bearing capacity, Compaction, Computerized tomography, Flow patterns, Life cycle, Mixtures, Railroads, Compaction effort, Compaction process, Experimental methods, Field measurement, Structural rearrangement, Asphalt mixtures
Nationell ämneskategori
Samhällsbyggnadsteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-247234DOI: 10.1201/9781315100333-205Scopus ID: 2-s2.0-85058531077ISBN: 9781138295957 (tryckt)OAI: oai:DiVA.org:kth-247234DiVA, id: diva2:1301605
Konferens
10th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCRRA 2017, 28 June 2017 through 30 June 2017
Anmärkning

QC 20190402

Tillgänglig från: 2019-04-02 Skapad: 2019-04-02 Senast uppdaterad: 2019-04-02Bibliografiskt granskad

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Ghafoori Roozbahany, EhsanPartl, ManfredGuarin, Alvaro

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