Akademik Veri Yönetim Sistemi
The 11th International Conference on Fracture Fatigue and Wear (FFW 2023), Ghent, Belçika, 29 - 31 Ağustos 2023, ss.1-16
The performance of added 50%
reclaimed asphalt (RAP) mixtures was investigated by four-point bending fatigue
tests (FPBT). Mixtures with 50% RAP were modified with SBS polymer, diatomite
(D) and hydrated lime (HL). Ten specimens were produced and fatigue of
specimens was evaluated with FPBT. Some samples give the fatigue breaking cycle
compatible with each other. In some samples, the number of cycles is much
higher than the average breaking load. Some samples may deteriorate in a short
time before the end of test. Although the briquettes are mixed homogeneously
for longer mixing times and produced with great care, inconsistent results can
be obtained. If water damage is applied to briquettes due to the presence of
HL, more compatible results can be obtained. The use of SBS-HL and rejuvenating
oil at high RAP ratios will provide more compatible results. As a result of 50%
stiffness reduction, the difference in the remaining stiffness values is
usually 2-3 times, while there are huge differences between the cycle numbers
that cause this. In terms of sustainable and long-term performance, the
homogeneity of the pavement composition appears to be essential, having a much more
pronounced effect than the number of loadings.