Comparative Analysis of Durability and Cost Efficiency Between Hot Rolled Sheet (HRS) and Cold Paving Hot Mix Asbuton (CPHMA) in Road Maintenance

Abstrak

Natural asphalt deposits on Buton Island are estimated to reach 677 million tons,
but their utilization remains suboptimal. Additional challenges, such as the
increasing number of vehicles and issues related to Over Dimension Over Load
(ODOL) on commercial vehicles, contribute to widespread road damage and
shortened pavement lifespans. One potential solution for efficient road
maintenance is the use of Cold Paving Hot Mix Asbuton (CPHMA), a flexible
pavement mixture that is heated during mixing but can be laid at ambient
temperatures, thus promoting the utilization of Buton asphalt. This study
compares HRS (Hot Rolled Sheet) and CPHMA wich used in routine road
maintenance in Malang Raya with laboratory tests and cost analyses.. The HRS
materials were sourced from PT. Piranti Utomo Makmur, while the CPHMA
materials were provided by PT. Ketahanan Aspal Nasional. Testing confirmed
that both the aggregate and asphalt materials meet technical specifications.
Marshall test results for CPHMA after a 1x30-minute immersion showed a
strength of 576.3 kg, while a 1x24-hour immersion produced a strength of 508.4
kg, resulting in a residual strength index of 88.22%. For HRS, the 1x30-minute
immersion yielded a strength of 1,091.2 kg, and the 1x24-hour immersion
produced 986.3 kg, with a residual strength index of 90.39%. These results
indicate that HRS exhibits better durability compared to CPHMA. From a cost
perspective, however, CPHMA proves more economical, with a cost of IDR
245,500.00/m2 compared to HRS at IDR 248,800.00/m2. The difference of IDR
3,300.00/m2 makes CPHMA a more cost-effective option and could be a quicker
option for routine road maintenance