Perilaku Beton Berserat Baja Terhadap Beban Uniaksial
DOI:
https://doi.org/10.26623/teknika.v20i2.12216Keywords:
Compressive Strength , Deformation, Ductility, Steel Fiber, Uniaxial Compressive LoadingAbstract
Perkembangan teknologi beton saat ini sangat pesat, dimana banyak dilakukan beberapa eksperimen dengan model dan bahan tambah material beton yang beraneka ragam. Dengan bahan tambah ini diharapkan dapat menaikkan kekuatan menahan tekanan pada beton. Penelitian ini menggunakan campuran serat baja dalam beton yang akan menjadi alternatif untuk menjawab seberapa besar pengaruhnya terhadap kenaikkan kuat tekan beton. Variabel yang digunakan adalah dengan menambah volume serat pada beton yaitu sebesar 0%, 1% dan 2%. Alat uji tekan dengan mekanisme pengaturan deformasi digunakan untuk menguji seluruh spesimen secara monotonik terhadap beban tekan uniaksial kapasitas 2.000 kN. Data-data hasil eksperimen beton tersebut digunakan untuk mengembangkan model perilaku tegangan-regangan beton. Berdasarkan hasil pengujian, penambahan serat pada beton mutu normal, menengah dan tinggi secara konsisten meningkatkan kemampuan beton menahan deformasi setelah mencapai tegangan puncak. Penurunan tegangan yang tajam setelah puncak pada beton tanpa serat menunjukkan sifat getas yang dominan. Penambahan serat 1% dan 2% mampu mempertahankan tegangan pada regangan yang lebih besar. Hasil validasi menunjukkan bahwa hasil eksperimen beton berserat baja mengalami kenaikkan kuat tekan. Secara umum, penambahan volume fraksi serat, mampu meningkatkan kekuatan dan daktilitas beton.
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