Kata Kunci
beton recycle
kuat tekan
air laut
Abstrak
Tujuan penelitian ini adalah untuk menginvestigasi kekuatan tekan beton agregat recycle (BAR) terhadap pengaruh rendaman air laut. Total tiga puluh benda uji beton berbentuk silinder dengan ukuran (f150 x 300 mm) diproduksi dari dua jenis campuran yang berbeda. Jenis pertama beton agregat normal (BAN) adalah beton normal terdiri atas campuran semen portland, normal agregat kasar (NAK), pasir sungai dan air tawar. Adapun jens kedua (BAR) adalah beton recycle aggregate yang terdiri dari campuran semen Portland, recycle agregat kasar (RAK), pasir sungai dan air tawar. Adapun rencana target kuat tekan beton benda uji adalah sebesar 250 kg/cm2 dengan nilai faktor air semen (fas) sebesar 0.45. Benda uji yang telah dibentuk kemudian dilakukan proses perendaman air laut secara langsung mulai umur 3, 7, 14, 21, dan 28 hari. Tiba saat waktu pengujian, benda uji dikeluarkan dari tempat perawatan dan selanjutnya diangin-anginkan untuk beberapa saat hingga material mengalami kering permukaan. Selanjutnya, pengujian kuat tekan dilakukan dengan menggunakan mesin kompresi tes sesuai prosedur SNI 1947:2011. Hasil pengujian memperlihatkan bahwa Pengaruh rendaman air laut tidak signifikan menurunkan kuat tekan beton BAR setelah membandingkan nilai kuat tekan beton BAN yang melampaui rencana mutu beton.Referensi
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