## 5 LCCA and Performance Efficiency  
Maintenance interventions based on the performance of each mixture type from finite element modelling and dynamic modulus tests have been scheduled for the analysis period of 40 years. In the first option, Salvage value until the analysis period of 40 years is evaluated for all the scenarios as shown in Table 9 and Figure 6. As observed, the least salvage value is exhibited by SBS-7% mixture due to extensive costs and less remaining service life. The SBS-7% scenario requires the first intervention in the 6 th year, which is 3 years earlier than the BF scenario. Furthermore, a second full reclamation for the SBS-7% scenario is required on the 31 st year, which is not the case for the fiber-modified mixtures, thereby adding further expenses to pavement life cycle costs. BF, on the other hand, performs the best with the longest maintenance-free period after the initial costs when compared to other scenarios. CF shows almost identical performance in terms of the increased duration of the maintenance free period with a reduction of only 1 year for the first maintenance intervention at the 8 th year. GF shows superior performance against the SBS-7% mixture; however, when compared to BF and CF, the first maintenance intervention is required at the 7 th year, which is two years earlier than that of BF. Furthermore, an extra maintenance intervention in terms of general maintenance is required to make it to 40 years  
Figure 4: Comparison of number of passes to fatigue damage. Figure 5: Compressive strain values for different scenarios. for the GF scenario, yielding a salvage value of 25.6 million. The highest salvage value is exhibited by BF at 34.1 millions. In the second option, additional service life based on the same maintenance intervention schedule for each scenario is evaluated as shown in Table 10. The BF scenario outperforms the SBS-7% option by 13 years with the same extent of maintenance interventions employed. SBS-7% makes it to the 40 year pavement service life with the remaining salvage value in this scenario at 15.1 million. However, the fiber-reinforced scenario still outperforms the SBS-7% slightly in terms of salvage value but extensively in terms of added service life. CF also outperforms the SBS-7% scenario by 7 years and GF by 4 years. The least performance gain in terms of added service life to the pavement by fiber-reinforced mixtures is shown by the GF scenario. Therefore, pavement life can be further extended with the use of fiber reinforcement, especially the BF, if the identical pavement maintenance intervention schedule is used. Furthermore, the duration of the maintenance-free period is longer by an average of 2.5 years among all the fiber-reinforced scenarios when compared to SBS-7% scenario. The percentage performance efficiency of each scenario based on the construction costs, maintenance interventions, and performance in terms of rutting and fatigue damage has been calculated and shown in Figure 7. As observed, due to the worst performance in terms of the base scenario of SBS-7% asphalt mixture, the performance efficiency stays at 6% when compared to a perfect scenario where no intervention is required throughout the analysis period. CF shows almost identical performance to BF in terms of fatigue damage and slightly less improvement when it comes to rutting damage; however, due to higher initial construction costs with the use of CF, the performance efficiency remains at 16% for the CF mixture. GF shows promising performance at lower costs when compared to CF; however, based on the number of passes to fatigue and rutting damage, as well as the requirement of extra maintenance interventions, GF mixture provides only a 14% performance efficiency. BF mixtures perform the best among the other options with a highest performance efficiency of 20% in terms of initial construction costs, maintenance interventions, and performance in terms of fatigue and rutting damage. Figure 6: Graphical representation of interventions for different scenarios.