Formulasi Kuat Tekan Perkerasan Landasan Pacu Dari Sampel Acak Terstruktur Transmisi Permukaan Ultrasonik

Heri Khoeri, Wisnu Isvara, Panji Nugroho

Abstract


Landasan pacu (Runway) merupakan salah satu penentu keamanan dan keselamatan operasional bandara, kerusakan perkerasan runway dapat membahayakan operasi penerbangan. Untuk mengetahui daya dukung perkerasan beton bertulang, maka kuat tekan beton menjadi hal penting untuk diperiksa. Uji tekan pada sampel beton inti merupakan cara yang paling akurat untuk menentukan kuat tekan beton, namun waktu yang tersedia untuk pemeriksaan pada runway sangat terbatas, sehingga pengujian tidak merusak (Non destructive test, NDT) dengan uji cepat rambat gelombang ultrasonik (ultrasonic pulse velocity test, UPVT) dan uji palu pantul (Rebound Hammer test, RHT) menjadi alternatif pilihan. Pada landasan pacu pengujian ultrasonik yang memungkinkan adalah dengan metode transmisi langsung (indirect transmission method, ITM) atau metode transmisi permukaan (surface transmission method), yang dalam banyak penelitian menunjukkan nilai akurasi yang lebih rendah dibandingkan dengan direct transmission method (DTM). Penelitian dilakukan dengan sampel acak terstruktur 1245 data RHT di sepanjang runway 3645 m, 45 pengukuran DTM dan 15 uji sampel beton inti. Hasil pengujian menunjukkan ada hubungan kuat antara hasil RHT dengan ITM, ditemukan korelasi rendah antara ITM dengan kuat tekan beton, , dan tidak ada hubungan antara ITM dan .  Namun secara bersama-sama ITM dan RHT menunjukkan korelasi yang kuat dengan fc’, dimana dengan faktor determinasi.


Keywords


asesmen, beton, palu, permukaan, uji, ultrasonik

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DOI: https://doi.org/10.24853/jk.16.1.131-141

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