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Abstract
Fractional reef has similarities with fine aggregate used as a substitute fine aggregate in theconcrete mix. This study aims to determine the optimal percentage of replacement fragments ofcoral reefs as a substitute for fine aggregate of compressive strength of concrete at 28 days.Test specimen using a slump of 0.6 fas 60-100 cube measuring 15 cm x 15 cm x 15 cm by 20samples. Variation replacement coral fragments used were 25%, 50%, 75% and 100% of theweight of the volume of fine aggregate. The results of the study of fine aggregate replacement with shards of coral reefs have increased the compressive strength of normal concrete. The percentage increase in the compressive strength of concrete for a variation of 3.024% P25replacement, replacement of variation of 6.61% P 50, P 75 variations replacement of 9.219 andvariations replacement P 100 at 1.220%.
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References
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- Bandung.
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References
ASTM 2002, C 40-99, Standart Test Method for Organic Impurities in
Fine Aggregates for Concrete.
Hendra, Sina, D.A., dan Sugiharto, H., 2003. Potensi Penggunaan Batu Karang Pulau Timor Sebagai Agregat Kasar Pada Beton, Fakultas Teknik Sipil dan Perencanaan Jurusan Teknik Sipil Universitas Kristen Petra, Surabaya.
Kementerian Pekerjaan Umum Direktorat Jenderal Cipta Karya., 1971.
Peraturan Beton Bertulang Indonesia (PBBI 1971), Yayasan Badan Penerbit Pekerjaan Umum, Bandung.
Mulyono, T., 2003. Teknologi Beton, Fakultas Teknik UNJ, Jakarta.
SK SNI S-04-1989-F, 1989, Bahan Bangunan Bagian A, LPMB, DPU,
Bandung.
SK SNI M-14-1989-F, 1989, Metode Pengujian Kuat Tekan, LPMB, DPU,
Bandung.
SK SNI M-15-1990-03, 1990, Tata Cara Pembuatan Campuran Beton
Normal, DPU, Bandung.
SNI 03-1968-1990, 1990, Metode Pengujian Tentang Analisis Saringan Agregat Halus dan Kasar, Balitbang PU.
SNI 03-1969-1990, 1990, Metode Pengujian Berat Jenis dan Penyerapan Air Agregat Kasar, BSN.
SNI 03-1970-1990, 1990, Metode Pengujian Berat Jenis dan Penyerapan Air Agregat Halus, BSN.
SNI 03-4142-1996, 1996, Metode Pengujian Jumlah Bahan Dalam Agregat yang Lolos Saringan 200, BSN.
SNI 03-2847-2002, 2002, Tata Cara Perencanaan Struktur Untuk Bangunan Gedung, BSN, Jakarta.
SNI 1972-2008, 2008 Cara Uji Slump Beton, BSN, Jakarta.
SNI 15-2049-2004, 2004, Semen Portland, BSN, Jakarta.
Tjokrodimuljo, K., 2007, Teknologi Beton, UGM, Yogyakarta.
Yamin, Anwar, H. R., 2011, Pemanfaatan Batu Karang Kristalin Fak Fak
Untuk Campuran Beraspal, Pusat Litbang Jalan dan Jembatan, Bandung.