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Journal : Proceedings ACES (Annual Civil Engineering Seminar)

STUDI PARAMTERIK PERKERASAN JALAN BETON SISTEM PELAT TERPAKU PADA TANAH DASAR LUNAK Puri, Anas
Proceedings ACES (Annual Civil Engineering Seminar) Vol 1 (2015): Annual Civil Engineering Seminar (ACES)
Publisher : Proceedings ACES (Annual Civil Engineering Seminar)

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Abstract

Theapplications of chiken foot foundation (sistem cakar ayam) are shown successfully on runway, taxi way, and apron of airport and gave services more than 30 years. This system is alsoshown the satisfy performance for high way construction. One of developing of this systemwas changing the concrete cylindrical foundation by galvanized cylindrical steel and it isnamed modified chiken foot foundation (CAM). Hardiyatmo (2008) proposed Nailed-slabSystem for more practical application by changing the cylindrical foundation by concrete pilefoundation. Based on model tests and analysis, the Nailed-slab is promising for application.This research is aimed to learn the behavior of Nailed-slab by conducting parametric study.This study was using the full scale test results of chiken foot foundation in Waru, East Java.Results show that the performance of Nailed-slab system (4 × 4 piles and 5 × 5 piles)withsimilar slab width with CAM was better than CAM performance. Slab deflections of Nailedslabtend to be lower than CAM. Similar behaviorswere for moment of slab. Additional of pilelength and decreasing the pile spacing can increase the performance which indicated bydecreasing the deflections.Keywords: chiken foot foundation, Nailed-slab system, soft soils, rigid pavement
KAJIAN KADAR ASPAL HASIL EKSTRAKSI PENGHAMPARAN DAN MIX DESIGN PADA CAMPURAN ASPHALT CONCRETE WEARING COURSE (ACWC) GRADASI HALUS Putri, Lusi Dwi; Wiyono, Sugeng; Puri, Anas
Proceedings ACES (Annual Civil Engineering Seminar) Vol 1 (2015): Annual Civil Engineering Seminar (ACES)
Publisher : Proceedings ACES (Annual Civil Engineering Seminar)

Show Abstract | Original Source | Check in Google Scholar

Abstract

Spesifikasi Umum 2010 revisi 2 (dua) Direktorat Jenderal Bina Marga pada poin dasarpembayaran menyebutkan bahwa sistem pembayaran pekerjaan aspal terpisah antarapembayaran aspal dan pembayaran agregat. Pembayaran aspal diberikan setelah dilakukan ujiekstraksi kadar aspal. Hasil ekstraksi kadar aspal yang telah dihampar biasanya kurang darispesifikasi yang telah ditetapkan. Untuk itu perlu diketahui pengaruh pelaksanaan di asphaltmixing plant (AMP), asphalt finisher dan setelah dipadatkan di lapangan serta pengaruh kadarpori agregat dan filler terhadap kadar aspal hasil ekstraksi. Penelitian dilakukan padalaboratorium AMP PT. Lutvindo Wijaya Perkasa dan di lapangan. Uji ekstraksi kadar aspalmenggunakan alat centrifuge extractor dengan pelarut bensin. Sample pengujian ekstraksiadalah campuran ACWC dari AMP, dari belakang asphalt finisher dan setelah dipadatkan dilapangan. Sample pengujian kadar pori berasal dari agregat quarry Ujung Batu, Bangkinangdan Solok. Berdasarkan hasil penelitian, kadar aspal rata-rata hasil ekstraksi di AMP sebesar5,85%, 5,80% di belakang asphalt finisher dan 5,72% dari hasil core. Kadar aspal ekstraksiuntuk campuran di belakang asphalt finisher memiliki deviasi -0,05% terhadap kadar aspalcampuran di AMP. Kadar aspal hasil ekstraksi dari core memiliki deviasi -0,08% terhadapkadar aspal campuran di belakang asphalt finisher. Kadar pori agregat quarry Ujung Batu0,995%, quarry Bangkinang 1,306% dan quarry Solok 0,863%. Hasil ekstraksi kadar aspaldipengaruhi oleh lokasi pengerjaan ACWC. Kadar aspal hasil ekstraksi semakin berkurangantara pengujian di AMP, di belakang asphalt finisher dan setelah dipadatkan di lapangan.Kadar aspal hasil ekstraksi juga dipengaruhi oleh kadar pori agregat dan filler yang dihasilkan.Dari pengujian kadar pori diperoleh semakin tinggi kadar pori agregat maka semakinberkurang kadar aspal hasil ekstraksi. Berdasarkan gradasi ekstraksi diperoleh semakin banyakfiller maka semakin tinggi kadar aspal hasil ekstraksi.Kata Kunci: Ekstraksi, Filler, Kadar Aspal, Kadar Pori