TY - GEN
T1 - Strategy for Designing Asphalt Mixture for Heavy Traffic by Modifying Open Aggregate Gradation
AU - Sutoyo,
AU - Mochtar, Indrasurya B.
AU - Prastyanto, Catur Arif
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.
PY - 2024
Y1 - 2024
N2 - Continuous graded aggregates in asphalt mixtures are still considered the most suitable for the construction of asphalt pavement surface layers, both in terms of strength (stability) as well as comfort (surface texture) and durability. However, in the field there is still a lot of damage that occurs before the service life is fulfilled, in the form of cracks, loose grains, holes, permanent deformation (rutting), and waves, especially those that occur on the track of the vehicle wheels. Modified asphalt is considered to be capable of providing a solution to these defects, but has not been fully successful. The weakness of continuous gradation is that it is prone to segregation during mixing, especially mixtures with a portion of fine aggregate of more than 40%. One of the functions of fine aggregate is to fill the space formed between the interlocking coarse aggregates. If some of the fine aggregates agglomerate, it will hinder the coarse aggregates which are interlocked, while on the other hand there is space that is not filled by fine aggregates so that both of them weaken the strength of the mixture. For asphalt mixtures that use a maximum of 3/4 in. granules, the portion of fine aggregate will be above 50%, so the weakening that occurs must be reinforced with modified asphalt. In this study, modification of the open gradation was carried out through a unit weight test, where the maximum volume of fine aggregate is equal to the volume of voids formed between interlocking coarse aggregates. With this composition, it is expected that the chances of segregation will be relatively small and the coarse aggregate grains will interlock to form a sturdy structure. Asphalt mixture for heavy traffic uses a maximum grain size of 1.5 inch, a portion of fine aggregate is 37.0% with asphalt penetration grade of 60–70 is 2.50%, Asbuton B-5/20 of 5.0%, and a Marshall stability value of at least 3700 kg is obtained, with a flow of 5–8 mm.
AB - Continuous graded aggregates in asphalt mixtures are still considered the most suitable for the construction of asphalt pavement surface layers, both in terms of strength (stability) as well as comfort (surface texture) and durability. However, in the field there is still a lot of damage that occurs before the service life is fulfilled, in the form of cracks, loose grains, holes, permanent deformation (rutting), and waves, especially those that occur on the track of the vehicle wheels. Modified asphalt is considered to be capable of providing a solution to these defects, but has not been fully successful. The weakness of continuous gradation is that it is prone to segregation during mixing, especially mixtures with a portion of fine aggregate of more than 40%. One of the functions of fine aggregate is to fill the space formed between the interlocking coarse aggregates. If some of the fine aggregates agglomerate, it will hinder the coarse aggregates which are interlocked, while on the other hand there is space that is not filled by fine aggregates so that both of them weaken the strength of the mixture. For asphalt mixtures that use a maximum of 3/4 in. granules, the portion of fine aggregate will be above 50%, so the weakening that occurs must be reinforced with modified asphalt. In this study, modification of the open gradation was carried out through a unit weight test, where the maximum volume of fine aggregate is equal to the volume of voids formed between interlocking coarse aggregates. With this composition, it is expected that the chances of segregation will be relatively small and the coarse aggregate grains will interlock to form a sturdy structure. Asphalt mixture for heavy traffic uses a maximum grain size of 1.5 inch, a portion of fine aggregate is 37.0% with asphalt penetration grade of 60–70 is 2.50%, Asbuton B-5/20 of 5.0%, and a Marshall stability value of at least 3700 kg is obtained, with a flow of 5–8 mm.
KW - Asphalt mixture
KW - Heavy traffic
KW - Modified open aggregate gradation
UR - http://www.scopus.com/inward/record.url?scp=85200374224&partnerID=8YFLogxK
U2 - 10.1007/978-981-97-0751-5_80
DO - 10.1007/978-981-97-0751-5_80
M3 - Conference contribution
AN - SCOPUS:85200374224
SN - 9789819707508
T3 - Lecture Notes in Civil Engineering
SP - 967
EP - 984
BT - Advances in Civil Engineering Materials - Selected Articles from the 7th International Conference on Architecture and Civil Engineering ICACE 2023
A2 - Nia, Elham Maghsoudi
A2 - Awang, Mokhtar
PB - Springer Science and Business Media Deutschland GmbH
T2 - 7th International Conference on Architecture and Civil Engineering, ICACE 2023
Y2 - 15 November 2023 through 15 November 2023
ER -