EFFECT OF DIFFERENT FRACTAL DIMENSION OF VARIOUS RAP BLENDS ON MIXTURE PERFORMANCE

Bagus , Hario Setiadji and SUPRIYONO, SUPRIYONO and Fardzanela , SUWARTO (2014) EFFECT OF DIFFERENT FRACTAL DIMENSION OF VARIOUS RAP BLENDS ON MIXTURE PERFORMANCE. Proceedings of the 10th Asia Pacific Conference on Transportation and the Environment (APTE) Kuala Lumpur, Malaysia . pp. 119-128. ISSN 2095-7564

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Abstract

Today, the use of reclaimed asphalt pavement (RAP) as pavement materials is increases. This is driven by the awareness of many agencies to give more contribution on applying green technology in road pavement structure, by reducing un-renewable materials in the mixture of overlay. However, many obstacles were encountered, especially the amount of RAP materials allowed for being used due to the complexity nature of RAP materials, such as high variation of RAP aggregate gradation and ageing asphalt material, that will lead to unpredictable performance of the mixtures. In practice, RAP materials may be obtained in different forms, i.e. milled RAP and granulated RAP, as a result of grinding process of milled RAP. This research was initiated by the effort to analyze the effect of amounts and forms of RAP material on the performance of the mixture. To evaluate the variation of RAP aggregate gradation fractal theory is proposed to be use in this study. It is expected that this theory could help explain better the characteristics of gradation of the mixture. The mixtures with virgin aggregate and milled or granulated RAP material blend were compared with 100% virgin material mixture and subject to Marshall-property assessment. The study showed that the randomized nature of RAP could produce unpredictable grading condition of a gradation of virgin aggregate – RAP blend. The comparison of gradation of this blend to the gradation of virgin aggregate will assist to find out the grading condition. Moreover, the use of granulated RAP in the aggregate blend could help to improve the stability and rigidity of the mixture, even though it will sacrifice the voids. The use of lesser amount of RAP in the aggregate blend (less than 20% in this case) could be considered as a better option.

Item Type:Article
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Faculty of Engineering > Department of Civil Engineering
Faculty of Engineering > Department of Civil Engineering
ID Code:54174
Deposited By:Mr. Adi Widayat
Deposited On:13 Jun 2017 10:59
Last Modified:18 Jul 2018 14:07

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