Pengaruh Tingkat Pemadatan (Under-Compaction & Over-Compaction) Terhadap Porositas, Bleeding, dan Kuat Tekan Beton
DOI:
https://doi.org/10.65244/jggm.v2i5.1105Keywords:
Bleeding, Kuat Tekan, Over-Compaction, Pemadatan, Porositas, Under-CompactionAbstract
Proses pemadatan merupakan salah satu tahapan penting dalam pekerjaan beton karena berpengaruh terhadap kualitas Beton Segar maupun Beton Keras. Pemadatan yang kurang (Under-Compaction) dapat meningkatkan Porositas akibat terbentuknya rongga udara, sedangkan pemadatan berlebih (Over-Compaction) berpotensi menimbulkan Bleeding akibat pemisahan air dari campuran Beton Segar. Penelitian ini bertujuan untuk menganalisis pengaruh Tingkat Pemadatan terhadap Bleeding, Porositas, dan Kuat Tekan Beton Normal Mutu Rencana f'c 30 MPa. Penelitian dilakukan secara eksperimental di laboratorium menggunakan Benda Uji Silinder berukuran 150 × 300 mm. Variasi tingkat pemadatan dilakukan dengan jumlah tumbukan 10, 15, 20, 25, 30, 35, dan 40 kali. Pengujian meliputi Slump Test berdasarkan SNI 1972:2022, Bleeding Test berdasarkan ASTM C232/C232M, Pengujian Porositas berdasarkan pendekatan ASTM C1754, serta Pengujian Kuat Tekan berdasarkan SNI 1974:2011 dan ASTM C39/C39M. Hasil penelitian menunjukkan bahwa Under-Compaction meningkatkan Porositas hingga 10,7% dan menurunkan Kuat Tekan Beton, sedangkan Over-Compaction meningkatkan kecenderungan terjadinya Bleeding hingga 0,241%. Kondisi pemadatan normal menghasilkan keseimbangan terbaik antara Porositas, Bleeding, dan Kuat Tekan. Secara keseluruhan, tingkat pemadatan berpengaruh terhadap karakteristik Beton Segar dan Beton Keras sehingga pengendalian proses pemadatan menjadi faktor penting dalam memperoleh Mutu Beton yang optimal.
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