The Durability of Asphalt Concrete with Dammar Resin Binder
Thien Giang Hao and Ary Setyawan
Department of Civil Engineering, Faculty of Civil Engineering, Sebelas Maret Surakarta Universitas (UNS), Jalan Sutami
36 A Surakarta 57126, Central Jawa, Indonesia
Keywords: Marshall Quotient, Long Term Oven Aging, Short Term Oven Aging, Indirect Tensile Stiffness Modulus
Abstract: The aging process of daspal on paved concrete pavement layers occurs during mixing in the Asphalt Mixing
plant and the time of service life. The process of aging of the daspal when mixing is called short-term aging
and aging of the daspal during the lifetime of the road service is called long-term aging. The study was
conducted in a laboratory with an oven method for simulating aging. The short-term aging method (Short
Term Oven Aging, STOA) is the testing of the specimens at 135
0
C before compacting for 4 hours representing
aging of the daspal mixture at the time of production of the asphalt mixture from on-site carriage to sealing.
The long-term aging testing methods (Long Term Oven Aging, LTOA) was performed 85
0
C after the
condensation for 48 hours representing a service period of 5 years. The aim of this research is to know the
effect of the process of daspal aging with respect to concrete asphalt. The research covers the value of
Stability, Flow, Marshall Quotient, VIM, VFB, Density, and Indirect Tensile Stiffness Modulus. This research
uses the optimum modification of the basic composition of resin (100 gr of pure resin or chunks + 350 gr of
dammar powder), fly ash powder (150 gr) and cooking oil (205 gr) and 4 % latex mixed by way of cooking
at temperatures below 150
o
C. The composition scored a ductility of 115.5 cm, flash point 260
o
C, penetration
43 dmm and specific gravity 0.99 gr/cm3. Results indicated stability (1906.48 kg), Flow (4.6 mm), VIM
(3.79%), VFB (74.2 %), Marshall Quotient (421,45 kg/mm), Density (2,36g /cm
3
). Therefore, it can be said
that the daspal test object satisfies the requirements as a mixture of AC - WC of coarse gradation. Result of
ITSM test at temperature 20
0
C is equal to 11156 MPa, at 30
0
C equal to 6930 MPa and at 40
0
C equal to 5127
MPa. For flexible pavement layer thickness analysis with SPDM Software Bisar 3.0 at all temperature
variation, results showed that Thickness value that is 24 cm at temperature of 20
0
C, 30,6 cm at 30
0
C and
35,3 cm at 40
0
C.
1 INTRODUCTION
The development of highway construction is very
rapidly developed, where all human activities are
using land transportation, so the construction and
maintenance of the highway is the main concern of
the government, to get a sense of security,
comfortable for the users of the highway. One of the
causes of a decrease in the strength of the mixture on
the flexible pavement is the aging process. According
to Huber and Decker (1995) in his research entitled
Engineering Properties of Asphalt Mixtures and the
Relationtiship to Their Performance which refers to
the ASTM method says that the short term ovulation
process (Short Term Oven Anging, STOA), oven
done at 135
°
C for 4 hours before compacting. The
STOA simulation was carried out to determine the
aging of the asphalt mixture during the process of
preparing the dosage mixture of the dioxide mixing
base (AMP), during the transporting and spreading of
the field, while the Long Term Oven Anging (LTOA)
testing procedure was carried out at 85
0
C for 48 hours
after compaction. LTOA simulation is done to find
out aging of asphalt mixer during service period. In
the study stated that the test at 85
°
C for 48 hours
represents mixed ages for 5 years in the field.
Therefore, this research is done by making specimens
of STOA and LTOA by testing using Marshall Test
method so that the aging daspal mixture can be known
the level of air (porosity), stability and flow.
In this research will be aging process on
aggregate mixture with Asphalt Concrete Wearing
Course (AC-WC) coating, by making specimens
STOA and LTOA using Marshall Test. The AC-WC
mixture is used because it is a wear-resistant coated
top surface that has direct contact with the vehicle
load on it, which is affected by temperature so that it
undergoes aging.