THE STRENGTH AND STIFFNESS MODULUS OF THIN LAYER HOT MIX ASPHALT CONCRETE AT VARIOUS TEMPERATURE
Abstract: Stiffness modulus of
asphalt concrete mixture is one of the most important parameters for the
flexible pavement design that is very susceptible from temperature and time
loading. The stiffness modulus here may be defined as a measure of the load
spreading ability of material. The stiffness of asphalt mixture can be measured
through various laboratory researches and empirical methods. Various laboratory
researches have been employed to measure this property of asphalt such as
indirect tensile modulus test, ITSM.
The aims of this research were to achieve the viability of using asphalt
60/70 pen with different temperature on strength and stiffness modulus on thin
layer HMA (4 cm) compared to Asphalt Concrete Wearing Course (6.8 cm). The
other purpose is to get to know the effect of the using thin layer HMA (4 cm)
in different climate region. All of the asphalt concrete mixtures of thin layer
HMA and AC-WC which were used in this research based on Marshall Mix design
according to Indonesian standard (Bina Marga 2010). The laboratories tests
which have been conducted in this research were: indirect tensile strength
(ITS), unconfined compressive strength (UCS) and indirect tensile stiffness
modulus (ITSM) at temperature 10°C, 20°C, 40°C and 60°C.
In comparison with the results of indirect tensile strength test,
indirect tensile stiffness modulus test and unconfined compressive strength
test, it is noticed that the strength and stiffness modulus of thin layer hot
mix asphalt was affected by the temperature which the temperature degree might
increase to decrease or the way around. From the results of ITSM test for HMA
and AC-WC showed that starting from the temperature 20°C to 60°C there is no
significant value of stiffness behavior at them. However, there is slight
different value at temperature 10°C mixture respectively.
Author: Abdulhakim Mustafa
Elshawesh, Ary Setyawan, Sholihin As’ad
Journal Code: jptsipilgg140011
