Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4913160 | Construction and Building Materials | 2017 | 7 Pages |
Abstract
This study was intended to evaluate the susceptibility of asphalt binders and mixtures to rutting. The binders have the same high PG grade (PG 76-xx) and a dense-graded gradation curve was used to produce the mixtures. Three types of polymers - Elvaloy®, SBS and SBR - and polyphosphoric acid (PPA) were selected. The tests included softening point, oscillatory shear (parameter Gâ/sinδ), multiple stress creep and recovery (Jnr) and flow number (FN). The rankings of binder and mixture parameters (Jnr, Gâ/sinδ, softening point and FN) are the same only for Jnr and FN, and the applicability of Gâ/sinδ to modified materials is questionable.
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Authors
Matheus David Inocente Domingos, Adalberto Leandro Faxina, Liedi Légi Bariani Bernucci,