KARAKTERISTIK MARSHALL LAPISAN AUS ASPAL BETON MENGGUNAKAN AGREGAT TERSELIMUT LIMBAH PLASTIK LDPE (LOW DENSITY POLYETHYLENE)
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Abstract
Jalan merupakan infrastruktur penting untuk pergerakan manusia, barang dan meningkatkan perekonomian nasional, namun sebagian besar jalan berperkerasan lentur mengalami kerusakan akibat kualitas dari materialnya yaitu aspal dan agregat. Aspal adalah bahan yang tidak terbarukan sehingga akan habis akibat dari penggunaan secara terus menerus. Sehingga diperlukan bahan alternatif sebagai pengganti aspal untuk melapisi agregat yang berfungsi untuk mengurangi erosi. Salah satu bahan alternatif yang bisa digunakan untuk menutupi permukaan agregat adalah limbah plastik Low Density Polyethylene (LDPE). Limbah plastik LDPE yang digunakan sebanyak 1% - 6% dari berat keseluruhan agregat di dalam campuran. Limbah plastik LDPE dibuat dalam bentuk potongan kecil plastik dengan ukuran benda uji dibuat berdiameter 4 " dan tinggi 2,7" dalam bentuk silinder. Pengujian Marshall dilakukan pada semua benda uji. Penambahan limbah plastik LDPE dapat meningkatkan stabilitas hingga 66,70% dan menurunkan kadar aspal hingga 2,5% dibandingkan campuran aspal beton tanpa campuran limbah plastik.
Roads are important infrastructure for the movement of people, goods and improving the national economy, but most flexible pavement roads suffer damage due to the quality of their material, namely asphalt and aggregate. Asphalt is a non-renewable material that will run out as a result of continuous use. So we need an alternative material as a substitute for asphalt to coat the aggregate which serves to reduce erosion. One alternative material that can be used to cover aggregate surfaces is Low Density Polyethylene (LDPE) plastic waste. The LDPE plastic waste used is 1% - 6% of the total weight of the aggregate in the mixture. LDPE plastic waste is made in the form of small pieces of plastic with the size of the test specimen made in diameter 4 "and height 2.7" in cylindrical form. Marshall testing is carried out on all test specimens. The addition of LDPE plastic waste can increase stability up to 66.70% and reduce asphalt content up to 2.5% compared to concrete asphalt mixture without plastic waste mixture.
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