ANALISIS PENYEBAB KERUSAKAN JALAN PADA TANAH EKSPANSIF DAN ALTERNATIF PENANGANANNYA (Studi Kasus Jalan Padangan � Batas Ngawi)
Road damage occurs continuously on the road from Padangan � Boundary of Ngawi has not found its possible causes to determine the right treatment. The possible cause of the damage was allegedly caused by expansive soil conditions. Sub grade has an important role to the pavement structure on it. Thi...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2014
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/128157/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=68492 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | Road damage occurs continuously on the road from Padangan � Boundary of
Ngawi has not found its possible causes to determine the right treatment. The
possible cause of the damage was allegedly caused by expansive soil conditions. Sub
grade has an important role to the pavement structure on it. This research was
intended to analyze the damage to the flexible pavement from km 03+000 to Km
30+500 related to pavement thickness and subgrade conditions, to analyze the
influence of expansive pressure and potential of sub grade soil, and recommend
treatment alternative of road damage in accordance with its types and causes of
damage.
The analysis were based on data from Ditjen Bina Marga Surabaya and the
result of direct survey on the field. The research consist of sampling the soil,
laboratory testing, and soil classification was determined using Unified system and
AASHTO. The analysis of swelling potential used measurement method (indirect
method) by Seed (1962) and classification method (indirect method) by Chen (1975),
while to analyze the pavement thickness was designed using AASHTO (1993).
The research result shows that the the existing condition has thirteen locations
with severely damage, with types of damage such as longitudinal cracking, edge
cracking, block cracking, upheaval, depression, potholes, and swelling. Based on
AASHTO and laboratory testing, main factor that causing road damage is pavement
structure does not eligible the requirement of thickness, and expansive degree of its
subgrade is critical and very high swelling pressure. Recommended treatment of its
road damage such as pavement nor subgrade rehabilitation, appropriate with type
and level of the damage. Pavement rehabilitation according to AASHTO must be first
to do subgrade rehabilitation, for instance treatment by using geomembrane.
Drainage improvement also should be done. AASHTO analysis advises overlay
thickness is 15 centimetre. The alternative if without overlay is structural treatment
using Cakar Ayam system for very high shrink - swell area. |
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