INTERNATIONAL JOURNAL OF SCIENTIFIC & TECHNOLOGY RESEARCH VOLUME 9, ISSUE 04, APRIL 2020 ISSN 2277-8616 880 IJSTR©2020 www.ijstr.org The Aging Properties Of Thin Surfacing Hot Mix Asphalt Containing Crumb Rubber As Aggregate Replacement Maneges Purbo Negoro, Ary Setyawan, F.P Pramesti Abstract : One of the main factors of road damage is the old age of the road. Road damage due to the age of the old road that causes friction of vehicle tires and the road is getting wider resulting in the use of tires on the vehicle which is easily damaged and causes a lot of used tire waste. Crumb rubber is a waste material that has flexible properties; this material can be used as a substitute for fine aggregate in the asphalt mixture layer. This research was conducted to find the optimum contents of asphalt and crumb rubber in asphalt mixtures that have been given aging behavior with the Long-term Aging Method (Long Term Oven Aging) and was tested by using Marshall test. Finally, it is concluded that the value obtained results in a good value at Marshall value which reduces the risk of emptiness in mixed pores and the addition of crumb rubber mixed with pavement on the road with the aging behavior can still be used for main roads with special requirements, such as playgrounds, jogging paths, or small roads. Keyword : Asphalt, Crumb Rubber, Aging, Marshall Test ——————————  —————————— 1. INTRODUCTION Main road is the transportation infrastructure that plays a strategic role in the social, economic and cultural fields. It serves 80-90% of all goods and people transportation in Indonesia, so that the construction of road transportation infrastructure is a prioritized development sector. The rapid growth of traffic in Indonesia is a major factor in shortening the service life of land transportation infrastructure to meet these demands. It is necessary to seek efficiency in various components of road construction, either from pavement construction materials, equipment used or other construction costs. The use of hot asphalt mix surfaces is one of the alternatives that can be used to anticipate the increased pavement surface problems due to conventional overlay. Thin surfacing hot mix asphalt is a technology which is being developed by the researchers in an effort to improve the quality of maintenance and coat the pavement of the damaged surface. [1-4]. The use of crumb rubber as an asphalt mixture is also expected to reduce the use of excessive petroleum asphalt, so that it can save asphalt which is a non-renewable natural resource. Crumb rubber in Indonesia can be obtained easily from craftsmen or materials from the tire retreading industry, so that it is expected that the research results can recycle the use of materials that are not used and can be utilized in civil engineering [5]. Previous studies have been done to assess the compatibility of the use of crumb rubber in the design of road materials [6-9]. Giving asphalt aging by being heated in the oven for 48 hours provides aging effect as in the field for 5 years [10]. 2 EXPERIMENTAL 2.1 Aggregate Test Coarse aggregate testing was carried out at the Sebelas Maret University's Main Road Laboratory. The coarse aggregate tested in this study was from PT. Panca Darma Puspawira which had an angular shape and rough texture. Coarse aggregate inspection included bulk density, SSD density, apparent density, absorption, and abrasion value. The results of the coarse aggregate (CA) testing can be seen in Table 1. . Table 1. The Properties of Coarse Aggregate No Type of Test Coarse Aggregate Specification Result 1 Adsorption (%) Max. 3.0 2.51 2 Bulk Density (gr/cc) Min. 2.5 2.51 3 SSD Density (gr/cc) Min. 2.5 2.57 4 Apparent Density (gr/cc) - 2.68 The characteristic testing of used tires as substitutes for fine aggregate aims to determine the specific gravity of used tires itself. It is expected that used tires can be applied as substitutes for fine aggregates. Used tire testing was carried out at the Sebelas Maret University's Main Road Laboratory. Used tire aggregates tested in this study were obtained from used tire craftsmen in Kalibogor Banyumas area in powder form according to fine aggregate gradation. Fine aggregate testing includes bulk density, SSD density, apparent density, absorption, and abrasion value. The results of the coarse aggregate (CA) testing can be seen in Table 2. ___________________  Author name is currently pursuing masters degree program in Infrastructure Maintenance and Rehabiitation Management, Civil Engineering Departement, Facuty of Engineering, Sebelas Maret University, Surakarta, Indonesia. E-mail: purbo.negoroo@gmail.com  Roadmate Research Group, Civil Engineering Departement, Facuty of Engineering Sebelas Maret University, Jl. Ir. Sutami 36A, Surakarta, Indonesia