Jurnal Teknik Sipil (Dec 2017)

Perbandingan Karakteristik Campuran Cold Paving Hot Mix Asbuton (CPHMA) yang Dipadatkan Secara Dingin dan Panas

  • I Nyoman Arya Thanaya,
  • I Wayan Suweda,
  • A.A. Adi Sparsa

Journal volume & issue
Vol. 24, no. 3

Abstract

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Abstrak Cold Paving Hot Mix Asbuton (CPHMA) adalah campuran yang terdiri dari agregat, asbuton butir, bahan peremaja dan bahan tambah lain yang dicampur panas dipadatkan dingin (pada temperatur ruang 30°C). Karakteristik campuran dipengaruhi temperatur pemadatan. Tujuan penelitian ini adalah untuk memperoleh: kadar aspal residu optimum, temperatur pemadatan ideal dan perbandingan karakteristik CPHMA yang dipadatkan secara dingin dan panas. Pemadatan dilakukan pada suhu 30°C, 60°C, 90°C, 120°C, dan 150°C. Diperoleh hasil, kadar aspal residu optimum 7 %; suhu pemadatan ideal 90°C. Pemadatan dibawah suhu 90°C memberikan porositas lebih tinggi berkisar antara (4,86-5,53)% namun masih memenuhi spesifikasi (4-10%). Pemadatan diatas suhu 90°C memberikan porositas antara (2,04-3.0)%, yang lebih rendah dari spesifikasi. CPHMA yang dipadatkan pada suhu ideal 90°C memberikan karakteristik Marshall, cantabro, kekakuan (stiffness), rangkak (creep), dan kelelahan (fatigue) lebih baik dibandingkan dengan CPHMA yang dipadatkan dingin. Abstract Cold Paving Hot Mix Asbuton (CPHMA) is a mixture that consists of aggregates, asbuton particles, rejuvenating materials and other added materials, which were hot mixed and compacted cold (at ambient temperature 30°C). The characteristics of the mixture were affected by compaction temperatures. The objectives of this study were to obtain: residual optimum asphalt content; ideal compaction temperature and characteristics comparison of CPHMA compacted cold and hot. Compaction were carried out at 30°C, 60°C, 90°C, 120°C and 150°C. It was obtained that the optimum residual asphalt content for CPHMA mixture was 7% and the ideal compaction temperature was 90°C. Compaction at temperature lower than 90°C gave higher porosity, i.e between (4.86-5.53)%, nonetheless still met specification (4-10)%. Compaction at higher than 90°C gave porosity between (2.04-3.0)% which were lower than the specification. CPHMA compacted at ideal 90°C gave better Marshall characteristics, cantabro, stiffness, creep, and fatigue, compared to the cold compacted CPHMA.

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