PERANCANGAN LABORATORIUM PENGARUH PENGGUNAAN BAHAN TAMBAH CRUMB RUBBER UNTUK MEMODIFIKASI ASPAL PADA CAMPURAN ASPHALT CONCRETE BINDER COURSE (AC-BC)

BERRY EVALDO, Dr.Ir. Latif Budi Suparma, M.Sc.

2014 | Tesis | S2 Mag. S. & T.Transportasi

Dalam Beberapa kasus jalan di Indonesia, banyak terjadi kerusakan konstruksi jalan yang mengalami masa kerusakan dalam masa pelayanan tertentu. Untuk mengatasi masalah ini,perlu meningkatkan fungsi aspal sebagai bahan pengikat dengan menggunakan bahan tambah/additive. Penelitian ini dilaksanakan untuk mengetahui pengaruh penggunaan limbah karet (crumb rubber) sebagai bahan tambah pada campuran aspal AC-BC. Penelitian ini dilakukan dengan variasi 0%, 5%, 10%, 12%dengan agregat kasar (CA), halus (FA), dan filler, crumb rubber ditambahkan setelah agregat dan aspal dicampur, hali ini dilakukan berdasarkan penelitian memberikan crumb rubber yang berasal dari ban bekas yang tidak terpakai lagi sebagai bahan tambah pada campuran AC-BC yang sesuai dengan Spesifikasi Umum 2010. Penelitian ini dilakukan dengan membuat 108 sampel benda uji dengan variasi crumb rubber 0 %, 5%, 10%, 12%. Dengan Metode Marshall ditentukan kadar aspal optimum pada masing-masing variasi crumb rubber. Benda uji pada kadar aspal optimum selanjutnya direndam selama ½ jam dan 24 jam. Setelah perendaman dilakukan pengujian Marshall untuk mengetahui karakteristik Marshall, ITS/Indirect Tensile Strength (mengetahui kuat tarik tidak langsung), Marshall Quotient (MQ). Hasil penelitian diperoleh hasil pada pengujian Marshall (nilai stabilitas) pada persentase crumb rubber 0%, 5%, 10%, 12% berturut-turut adalah 1750 kg, 1766,54 kg, 1730,02 kg, serta 1664,51 kg . Kemudian nilai stabilitas sisa berturutturut adalah 95,34%; 95,84%; 94%; serta 90,29%. Pada pengujian ITS belum didapatkan hasil yang sesuai standar nilai TSR < 80%, hasil yang diperoleh pada persentase crumb rubber 0%, 5%, 10%, 12% berturut-turut adalah 74,87%; 75,86%; 74,10%; serta72,63%. Berdasarkan pengujian yang dilakukan, dapat disimpulkan bahwa crumb rubber yang digunakan sebagai bahan tambah/additive campuran AC-BC dengan nilai optimum sebesar 5%. Karena campuran tidak mudah mengalami cracking dan deformasi oleh pembebanan lalu lintas, dan menjadikan jalan lebih fleksibel, selain itu dapat mengurangi kadar aspal optimum yang dibutuhkan. Kata Kunci : AC-BC, limbah karet (crumb rubber),pengujian Marshall, ITS

In some cases, there are many road constructions which are damaged in certain service life, though the goal is to provide roads in a good standard along with their functions. To achieve this objective, one of the efforts to increase the service life is by increasing the fungction of the asphalt as the binding material by utilizing an additive materials. This research was conducted to explore the effects of utilizing crumb rubber waste as an additive material to AC-BC mixture, despite the crumb rubber is not used well yet. This research was conducted by introduction crumb rubber waste as the additive material AC-BC mix, according to the 2010 spesification. This research was performed by manufacturing 108 samples with 0%, 5%, 10%, 12% of crumb rubber waste contents variation within xx% of Coarse Aggregate (CA), xx% of Fine Aggregate (FA), and xx% of filler, The crumb rubber was added after the aggregate and asphalt were mixed, referring to the former researches. Using the Marshall Method, the optimum asphalt content of each crumb rubber waste variation was determined. Further tests was generated based on the optimum asphalt contents of each variation in accordance to The Marshall Immersion test for a half hour and 24 hours at 600 C. Subsequently the Marshall stability, Inderct Tensile Strength, and Marshall Quotient. Based on the Marshall test results, stability value of crumb rubber with 0%, 5%, 10%, and 12% percentage were 1750 kg, 1766,54 kg, 1730,02 kg, and 1664,51 kg respectively, with residual stability value were 95,34%, 95,84%, 94%, 90,29% respectively. The ITS test result which meet the standard value of TSR < 80% had not been obtained, teh results obtained on the percentage of crumb rubber 0%, 5%, 10%, and 12% were respectively 74,87%, 75,86%, 74,10%, and 72,63%. Based on all of the results, it concluded that crumb rubber could be used as a substitute of stone dust in AC-BC mixture with optimum value from 5%. Because of the optimum asphalt content, since the mix did not get any crackings and deformation due the traffic laod easily. And then make the roads to be flexible. In spite of the adding the crumb rubber waste into the mix could decreased the optimum asphalt content. Key word : AC-BC, crumb rubber, pengujian Marshall, ITS.

Kata Kunci : AC-BC, limbah karet (crumb rubber),pengujian Marshall, ITS