ANALISIS KUAT TEKAN DAN ULTRASONIC PULSE VELOCITY (UPV TEST) PADA MUTU BETON K 350 MENGGUNAKAN BETON SISA PENGUJIAN SEBAGAI SUBSTITUSI AGREGAT KASAR
Abstrak
Salah satu upaya untuk mengurangi eksploitasi batuan alam sebagai bahan penyusun beton adalah memanfaatkan beton sisa pengujian. Beton sisa pengujian yang digunakan adalah beton sisa atau limbah dari hasil pengujian laboratorium sebagai pengganti agregat kasar dalam pembuatan beton baru. Tujuan penelitian ini adalah untuk mengetahui pengaruh dari penggunaan beton sisa pengujian sebagai substitusi agregat kasar dalam campuran beton terhadap nilai kuat tekan dan kepadatan melalui uji ultrasonic pulse velocity (UPV). Metode penelitian yang digunakan pada penelitian ini adalah metode eksperimental dengan melakukan pengujian kuat tekan beton dan pengujian ultrasonic pulse velocity (UPV test). Dari hasil pengujian kuat tekan rata-rata beton campuran sisa pengujian mengalami peningkatan kuat tekan beton pada variasi 25% sebesar 25.3 MPa, 35% sebesar 26.7 MPa, dan 50% sebesar 28.6 MPa, akan tetapi tidak melebihi beton normal sebesar 30.6 MPa. Sedangkan hasil pengujian ultrasonic pulse velocity (UPV) mengalami peningkatan pada rata-rata cepat rambat gelombang variasi 25% sebesar 4034.0 m/s, 35% sebesar 4413.7 MPa, 50% sebesar 4589.3 m/s, serta beton normal nya sebesar 4534.3 m/s. Jadi semakin tinggi nilai kuat tekan beton maka akan semakin tinggi juga hasil pengujian UPV.
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