PROSES DESAIN STRUKTUR PERKERASAN LENTUR YANG MEMPERHITUNGKAN VARIASI MODULUS PERKERASAN AKIBAT PENGARUH TEMPERATUR
ABSTRACT: The effects of pavement temperature on pavement modulus,
particularly the asphalt layer
modulus, are quite apparent. In
the analytical design
method, the effects
of pavement temperature
can be taken
into account in
term of design temperature
factor, as that proposed by
the Nottingham method.
Alternatively as proposed
by the Asphalt Institute method,
Miner’s theory can also
be applied to
calculate pavement thickness design directly that satisfies
the cumulative effects of
pavement modulus variation.
For this purpose, traffic loading
spectrum across the pavement temperature differences ought to be known.
A research had been conducted to determine design temperature factor from FWD deflection
data measured four
times in the
morning, afternoon, evening
and in the night within the
same day. Pavement modulus
values were estimated from
back calculation processes on the
FWD deflection data. This
paper outlines the analytical
design procedure based
on the Nottingham
method by using
program PastDean employing
the calculated design
temperature factor and
the Miner’s theory,
respectively. It was
found that the remaining
life of the existing pavement structure being
analyzed would be dictated by the fatigue cracking criterion, and the resulting
design temperature factor was 1.55. Further analysis is then presented to
simulate hypothetically the design temperature factor suitable for permanent
deformation criterion.
Keywords: pavement structural,
analytical design, temperature factor, Miner’s theory, program PastDean
Penulis: Djunaedi Kosasih
Kode Jurnal: jptsipildd080002
