Akademik Veri Yönetim Sistemi
World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium (WMCAUS), Prague, Çek Cumhuriyeti, 13 - 17 Haziran 2016, cilt.161, ss.963-969
Highway transportation is the most preferred transportation system as compared to other modes due to its high accessibility. Flexible highway pavement consists of mainly aggregate and bitumen, besides, in order to improve performance, some organic and/or inorganic additives are also utilized as additional constituents in the hot mix asphalt (HMA). By improving performance, positive characteristics can be gained to the HMA such as high strength, durability, toughness, suitable flexibility and resistance to impact. In this study, an attempt has been made to minimize deterioration due to the damage given by different aggressive environmental conditions. For that purpose, polypropylene fibers were added in varying ratios (0, 5, 7.5 and 10 % by weight of binder) into the HMA, then these mixtures were maintained in the freeze-thaw cycling cabinet, CaCl2, NaCl and Na2SO4 solutions for a certain period. The results showed that stability increased continuously by mixtures with a content of up to 7.5 % of polypropylene fibre, and then a drop was observed by 10 % fibre reinforced mixtures. In addition, exposure to freeze-thaw cycles and Na2SO4 solution was found as the most harmless and harmful conditions, respectively among other environments in the investigation. (C) 2016 The Authors. Published by Elsevier Ltd.