Effects of Warm Mix Asphalt Additives on Aging Characteristics of Bituminous Mixtures | Zendy

Peyman Aghazadeh Dokandari | Zendy; Ali Topal | Zendy

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Effects of Warm Mix Asphalt Additives on Aging Characteristics of Bituminous Mixtures

Author(s) -

Peyman Aghazadeh Dokandari,

Ali Topal

Publication year - 2015

Publication title -

periodica polytechnica civil engineering

Language(s) - English

Resource type - Journals

eISSN - 1587-3773

pISSN - 0553-6626

DOI - 10.3311/ppci.7364

Subject(s) - asphalt , durability , materials science , ultimate tensile strength , asphalt pavement , hardening (computing) , accelerated aging , environmental science , composite material , forensic engineering , engineering , layer (electronics)

In recent decades, the utilization of the warm mix technologies in pavement constructions is increasing rapidly with rise in public environmental awareness. The durability of a pavement highly depend on the behavior of the pavement against aging induced failures. Therefore this study encompasses the evaluation of short- and long-term aging characteristics of four kinds of Warm Mix Asphalt (WMA) additives. Additives distinctly assessed in this study, consist of two non-foaming (organic and chemical) and two foaming(synthetic and natural zeolite) additives. In order to appraise the proportion of hardening of mixtures containing dierent kinds of additives, indirect tensile strength (ITS) values of both short- and long-term aged specimens were determined. Based on relative aging indices derived from the ratio of ITS values of aged and unaged specimens, comparisons were made between the additives assessing the impact of their utilization on aging characteristics of WMA.

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