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A platform for research: civil engineering, architecture and urbanism
Susceptibility of low-density polyethylene and polyphosphoric acid-modified asphalt binders to rutting and fatigue cracking
Highlights Asphalt binders modified with PE and PPA were evaluated in the MSCR and LAS tests. Asphalt binder modification increases damage tolerance of the unmodified material. For low strains, the modified binders are less susceptible to fatigue after aging. The AC+PPA formulation showed the highest fatigue and rutting resistances. The formulations have higher elastic response and lower susceptibility to rutting.
Abstract Fatigue and rutting properties of asphalt binders modified with low-density polyethylene and polyphosphoric acid (PPA) were investigated. The modifier contents were chosen such that the high-temperature performance grade is the same for all formulations in the Superpave® specification (PG 76-xx). The linear amplitude sweep (LAS) for fatigue and the multiple stress creep and recovery (MSCR) for rutting were performed. The modified binders have better rheological properties than the base material and show different rutting and fatigue behaviors, even though their high PG grades are the same. The results indicated that PPA is a great alternative to be used as binder modifier.
Susceptibility of low-density polyethylene and polyphosphoric acid-modified asphalt binders to rutting and fatigue cracking
Highlights Asphalt binders modified with PE and PPA were evaluated in the MSCR and LAS tests. Asphalt binder modification increases damage tolerance of the unmodified material. For low strains, the modified binders are less susceptible to fatigue after aging. The AC+PPA formulation showed the highest fatigue and rutting resistances. The formulations have higher elastic response and lower susceptibility to rutting.
Abstract Fatigue and rutting properties of asphalt binders modified with low-density polyethylene and polyphosphoric acid (PPA) were investigated. The modifier contents were chosen such that the high-temperature performance grade is the same for all formulations in the Superpave® specification (PG 76-xx). The linear amplitude sweep (LAS) for fatigue and the multiple stress creep and recovery (MSCR) for rutting were performed. The modified binders have better rheological properties than the base material and show different rutting and fatigue behaviors, even though their high PG grades are the same. The results indicated that PPA is a great alternative to be used as binder modifier.
Susceptibility of low-density polyethylene and polyphosphoric acid-modified asphalt binders to rutting and fatigue cracking
Nuñez, Javier Yesid Mahecha (author) / Domingos, Matheus David Inocente (author) / Faxina, Adalberto Leandro (author)
Construction and Building Materials ; 73 ; 509-514
2014-10-03
6 pages
Article (Journal)
Electronic Resource
English
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