EVALUASI HUBUNGAN KONDISI KERUSAKAN LAPISAN STRUKTURAL MENGGUNAKAN METODE LENDUTAN BALIK DENGAN KONDISI LAPISAN FUNGSIONAL MENGGUNAKAN METODE PCI
Abstract
Visual evaluation for functional pavement of Triwidadi Road, Pajangan, Bantul
regency, Yogyakarta, using Pavement Condition Index (PCI) method is
considered to be in bad category. This is shown from the damage of the pavement
surface indicated by the inconvenience when driving along the road. The
correlation between functional damage using PCI method and structural using
Bengkelman Beam method must be identified as anticipative act in deciding
whether or not roadwork is needed. The test was done using Bengkelman Beam
with reverse deflection method of 2 km long. Based on the analysis of PCI index,
there was no significant correlation between functional layer damage and the
structural of the whole segment, resulted from test on segment 1 = -9 cm
(moderate PCI result), segment 2 = -8 cm (moderate PCI result), segment 3 = -12
cm (moderate PCI result), segment 4 = -11 cm (moderate PCI result), segment 5
= -12 cm (moderate PCI result), segment 6 = -12 cm (poor PCI result), segment 7
= -9 cm (very poor PCI result), segment 8 = -14 cm (very poor PCI result),
segment 9 = -8 cm (moderate PCI result), segment 10 = -1 cm (poor PCI result).
From those results, it is indicated that Triwidadi road on Sta. 14+000 – Sta.
16+000 is not yet recommended for being given a multi-layered pavements
roadwork, for its pavement’s structural layer is still able to cope with the traffic
load.