The Influence of CBR Value and Overloading on Flexible Pavement Mechanistic Response

Tajudin, Anissa Noor and Setyarini, Ni Luh Putu Shinta Eka and Darmawati, Devy S The Influence of CBR Value and Overloading on Flexible Pavement Mechanistic Response. The Influence of CBR Value and Overloading on Flexible Pavement Mechanistic Response.

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Abstract

Flexible pavement distresses are often
caused by overloading with the combination of other
factors, such as subgrade strength. Therefore, this study
was conducted to investigate and analyze the effect of
subgrade strength on flexible pavement mechanistic
response with normal traffic loading and overloading
scenario (25% to 100%) using KENPAVE software.
CBR was varied from the range 3% to 10% with an
increase of every 0,5%. Horizontal tensile strain was
then used to estimate pavement fatigue life (Nf) and
vertical tensile strain was then used to estimate
pavement rutting life (Nr). The results of mechanistic
responses reveal that the horizontal tensile strain and
vertical compressive strain all decrease with increasing
subgrade CBR value. The addition of load will increase
the pressure that the vehicle distributes to the pavement,
so that the horizontal tensile strain and vertical
compressive strain will be higher. Nf and Nd all increase
with decreasing of horizontal tensile strain and vertical
compressive strain, which implies that higher CBR value
will increase Nf and Nd. Rutting occurs at CBR 3% to
7,5% with the overloading of 75% and 100% while
fatigue cracking occurs at CBR 3% to 9,5% with the
overloading of 50, 75%, and 100%.

Item Type:	Article
Subjects:	Penelitian > Fakultas Teknik
Divisions:	Fakultas Teknik > Teknik Sipil
Depositing User:	Puskom untar untar
Date Deposited:	22 Dec 2020 12:56
Last Modified:	22 Dec 2020 12:56
URI:	https://repotest.untar.ac.id/id/eprint/13800

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