Susceptibility of low-density polyethylene and polyphosphoric acid-modified asphalt binders to rutting and fatigue cracking

Autor(es)

Mahecha Nunez, Javier Yesid ^[1] ; Inocente Domingos, Matheus David ^[1] ; Faxina, Adalberto Leandro ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Transportat Engn, Sao Carlos Sch Engn, BR-13566590 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CONSTRUCTION AND BUILDING MATERIALS; v. 73, p. 509-514, DEC 30 2014.
• Citações Web of Science: 18

Resumo

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. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 06/55835-6 - Caracterização e modelagem de propriedades reológicas de ligantes, de mástiques e de misturas asfálticas
• Beneficiário: Adalberto Leandro Faxina
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores