Rianung,, Sih (2007) “Kajian Laboratorium Pengaruh Bahan Tambah Gondorukem pada Asphalt Concrete-Binder Course (AC-BC) Tehadap Nilai Propertis Marshall dan Durabilitas “. Masters thesis, Program Pasca Sarjana Universitas Diponegoro.
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Abstract
Functioning asphalt as aggregate glue in concrete asphalt mixture, of very important to be defended the capability to its adhesiveness, the flabby point and the flexibility. To defend or increase that asphalt characteristics, one of ways are by using additional material. Gum Rosin which is result of distillation of pine gum which is in the form pure yellow until bright yellow solid matter, tried to used as an additional material of asphalt in experiment of mixed hot asphalt has type Asphalt Concrete – Binder Course ( AC-BC ). From result of assaying of physic characteristic pen asphalt 60/70 by adding variation Gum Rosin 1%, 2%, 3% and 5% to asphalt weight has effect to flabby point characteristic and penetration value with pattern close to linier inversely proportional. The higher percentage of additional material Gum Rosin will increase flabby point of asphalt and decrease value of penetration but also decrease value of burning point. In testing of Marshall characteristics, the beginning asphalt content 4,5% - 6,5% of Optimum Asphalt Content (KAO) for pure asphalt, variation Asphalt - Gum Rosin 1%, 2%, 3% and 5% respectively amount 5, 8%, 6.5%, 5.8%, 5.7% and 5.9% from mixed total weight. Using influence at additional material Gum Rosin with variation 1%, 2%, 3% and 5% at Optimum Asphalt Content (KAO) with soaking term 24, 48, 72, and 96 hours for 2x75 pounds give influence at weight loss of content/density, percentage VMA and VIM decrease, percentage VFB increase, stability value and flow disparage, MQ value is higher and to 2x400 pounds are content/density have an increase, percentage VMA and VIM have an increase, and percentage of VFB have a decrease, stability value and flow disparage, MQ value is higher so that mixed concrete asphalt is stiffer and easy to crack and also its power and flexibility are lower if they are submerged. The result of durability experiment research either condition 2 x 75 pounds or condition 2 x 400 pounds, there is a mixed damage faster compared to using pure asphalt. If Gum Rosin is used as additional material at hot mixed asphalt AC-BC have good capability if it used in dry way, the most optimal condition at Asphalt Gum Rosin are 2% and have the characteristic of Marshall which is regarded to be the most optimal from the balance of the hollow and the asphalt covering toward the aggregates in higher stability mixing and more rigid mixing so that it can bear the heavier traffic burden so as not to suffer from plastics deformation but at conditional of way is submerged, using Gum Rosin as additional material is not recommended to use these cause decrease of stability. Aspal yang berfungsi sebagai perekat agregat dalam campuran aspal beton sangat penting dipertahankan kemampuannya terhadap kelekatan, titik lembek dan kelenturannya. Untuk mempertahankan atau meningkatkan sifat-sifat aspal tersebut salah satunya bisa dengan menggunakan bahan tambah / aditif. Gondorukem yang merupakan hasil destilasi/ penyulingan getah pinus yang berbentuk padatan berwarna kuning jernih sampai kuning tua, dicoba digunakan sebagai bahan tambah / aditif aspal dalam pengujian campuran beraspal panas jenis Asphalt Concrete-Binder Course (AC-BC). Dari hasil pengujian sifat fisik aspal pen 60/70 dengan penambahan Gondorukem variasi 1%, 2%, 3% dan 5% terhadap berat aspal berpengaruh terhadap sifat titik lembek dan nilai penetrasi dengan pola hampir linier berbanding terbalik. Makin besar persentase bahan tambah Gondorukem dapat meningkatkan titik lembek dan juga menurunkan nilai penetrasi akan tetapi juga terjadi penurunan nilai titik nyalanya. Dalam Uji sifat–sifat Marshall, pada kadar aspal awal 4,5% - 6,5% dari penelitian Kadar Aspal Optimum (KAO) untuk Aspal murni, Aspal-Gondorukem (As-rukem) variasi 1%, 2%, 3% dan 5% berturut-turut sebesar 5,8%, 6,0%, 5,8%, 5,7% dan 5,9% dari berat total campuran. Penggunaan pengaruh pada bahan tambah Gondorukem dengan variasi 1%, 2% 3% dan 5% pada Kadar Aspal Optimal (KAO) dengan masa perendaman 24, 48, 72 dan 96 jam untuk 2x75 tumbukan memberikan pengaruh pada penurunan Berat Isi/ kepadatan, persentase VMA dan VIM naik, persentase VFB turun, nilai stabilitas dan flow mengecil, nilai MQ lebih besar dan untuk 2x400 tumbukan adalah untuk Berat Isi/ kepadatan mengalami kenaikan, persentase VMA dan VIM turun, persentase VFB naik, nilai stabilitas dan flow mengecil, nilai MQ lebih besar sehingga campuran aspal beton lebih kaku dan mudah retak serta berkurang kekuatan dan kelenturannya jika terendam air. Dari hasil penelitian uji durabilitas baik kondisi 2 x 75 tumbukan maupun kondisi 2x400 tumbukan terjadi kerusakan campuran lebih cepat jika dibanding dengan menggunakan aspal murni. Gondorukem jika digunakan sebagai bahan tambah pada campuran beraspal panas AC-BC mempunyai kinerja yang lebih baik jika digunakan pada jalan dalam kondisi kering. Paling optimal ditunjukkan pada As-rukem 2% karena semua parameter uji aspal dapat dipenuhi dan mempuyai karateristik Marshall yang dianggap paling optimal jika dibandingkan dengan menggunakan aspal murni. Akan tetapi pada kondisi jalan yang sering terendam air, penggunaan gondorukem sebagai bahan tambah tidak direkomendasikan untuk digunakan karena stabilitasnya cenderung lebih cepat mengalami penurunan.
Item Type: | Thesis (Masters) |
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
ID Code: | 18087 |
Deposited By: | Mr UPT Perpus 1 |
Deposited On: | 29 Jul 2010 09:22 |
Last Modified: | 29 Jul 2010 09:22 |
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