Publication
Fluxing as a new tool for bitumen rheological characterization and the use of time-concentration shift factor (a c )
| dc.contributor.author | Zoorob, Salah E. | |
| dc.contributor.author | Mturi, Georges A. | |
| dc.contributor.author | Sangiorgi, Cesare | |
| dc.contributor.author | Almeida, Marisa S. Dinis | |
| dc.contributor.author | Habib, Noor Zainab | |
| dc.date.accessioned | 2020-01-22T11:06:42Z | |
| dc.date.available | 2020-01-22T11:06:42Z | |
| dc.date.issued | 2018-01-15 | |
| dc.description.abstract | The concept of temperature shift factor (aT) as defined by Doolittle, relating the free volume of a vis-coelastic material at the current and reference states is briefly examined together with the resultantWilliam-Landel-Ferry equation. This paper highlights the fact that change in free volume arise not onlyfrom temperature variations but can also result from the absorption of solvents and thus a generalizedDoolittle relation may also be applied to a solvent concentration shift factor (ac). To validate this concept,a small scale laboratory investigation was carried out by blending 40/60 penetration grade bitumen withvarious proportions of one type of cooking oil and conducting dynamic shear rheometer frequencysweeps at a range of temperatures. By applying time-concentration superposition to each flux content,it was possible to shift horizontally (ac) each set of complex modulus data measured at each test temper-ature, so that all sets superimpose onto the master curve of the base bitumen at a preselected referencetemperature. A direct relationship between conventional time-temperature shift and the proposed time-concentration shift factors was thus demonstrated using a sample of penetration grade bitumen and onetype of vegetable oil. Further experimentation with other bitumen-flux combinations is necessary priorto recommending general adoption of the proposed tool. | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | Salah E Zoorob, Georges A Mturi, Cesare Sangiorgi, Marisa Dinis-Almeida, Noor Zainab Habib. (2018). Fluxing as a new tool for bitumen rheological characterization and the use of time-concentration shift factor (ac), Construction and Building Materials, 2018, vol. 158, pp. 691-699. https://doi.org/10.1016/j.conbuildmat.2017.10.020 | pt_PT |
| dc.identifier.doi | 10.1016/j.conbuildmat.2017.10.020 | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10400.6/8572 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.publisher | Elsevier | pt_PT |
| dc.subject | Bitumen rheological characterization | pt_PT |
| dc.subject | Time-temperature superposition | pt_PT |
| dc.subject | Time-concentration superposition | pt_PT |
| dc.subject | Bitumen fluxing | pt_PT |
| dc.subject | Free volume shifting | pt_PT |
| dc.title | Fluxing as a new tool for bitumen rheological characterization and the use of time-concentration shift factor (a c ) | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 699 | pt_PT |
| oaire.citation.startPage | 691 | pt_PT |
| oaire.citation.title | Construction and Building Materials | pt_PT |
| oaire.citation.volume | 158 | pt_PT |
| person.familyName | Sangiorgi | |
| person.familyName | Dinis-Almeida | |
| person.familyName | Habib | |
| person.givenName | Cesare | |
| person.givenName | Marisa S. | |
| person.givenName | Noor Zainab | |
| person.identifier.ciencia-id | 7B11-BBB1-B77B | |
| person.identifier.orcid | 0000-0003-1006-5935 | |
| person.identifier.orcid | 0000-0002-1714-8891 | |
| person.identifier.orcid | 0000-0001-8489-7617 | |
| person.identifier.rid | B-8116-2014 | |
| person.identifier.scopus-author-id | 54406877200 | |
| person.identifier.scopus-author-id | 36806021300 | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |
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