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CANGKANG PALA SEBAGAI MATERIAL PENGGANTI SEBAGIAN AGREGAT KASAR PADA BETON NORMAL Budiman Budiman; Imran Imran; James WTP
Prokons: Jurnal Teknik Sipil Vol 15, No 2 (2021): Agustus 2021
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/prokons.v15i2.331

Abstract

Abstract Normal concrete uses fine aggregate and coarse aggregate with concrete density 2200 kg/m3 -2400 kg/m3 with a compressive strength of about 15-40 MPa. The purpose of this study is to determine characteristics of the concrete aggregate and the compressive strength of the concrete design based on the DOE (Department of Environment) method and the SNI Standard. In this research, the use of nugmet shell was varied as follows: 0%, 0,25%, 0,50%, 0,75% and 1% of the cement weight. The results showed that the use of nutmeg shells as a normal concrete affected the specific gravity and the value compressive strength of concrete. The higher the percentage of nutmeg shells, the lower the specific gravity and compressive strength of the concrete. The average value of concrete density to nutmeg shell 2254.72 (kg/m3 ) and normal concrete 2304.32 (kg/m3 ). The compressive strength of normal concrete is 224.2 kg/cm2 and the concrete from nutmeg shell the composition of 0.25% and 0.5% obtained by 129.6 kg/cm2 and 140.0 kg/cm2 increases the use of nutmeg shell 0.75% and 1% obtained value of 117.6 kg/cm2 and 118.1 kg/cm2 decreased at the age of 28 days. The compressive strength of normal concrete 22 MPa while the maximum nutmeg shell concrete 14 MPa, so it does not meet the quality of normal concrete in general. Keywords: Aggregate Characteristics, nutmeg shell, Characteristics Compressive Strength
The Eksperimentation Study of Wave Transmission Trough Type Of Hollow Cube Breakwater Daniel Daniel; Budiman Budiman
Logic : Jurnal Rancang Bangun dan Teknologi Vol 19 No 3 (2019): November
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2097.61 KB) | DOI: 10.31940/logic.v19i3.1457

Abstract

Erosion that occurs in break water by wave sand currents is a serious problem along coastal and inland shore [1]. This study aimed to assess the effect of the model height (Hm) and the pole density on the model on the reduction of the wave height and on the relationship between the non-dimensional parameter. The research was experimental with 2D physical model simulation which was conducted in the laboratory of Marine Engineering Faculty, Hasanuddin University. Several of configurations of Hollow-type breakwater models were made with different densities and model heights. The model scale use was 1:10 for the three model variations ((M1KB, M2KB, and M3KB) with the variations of the periods and of the wave height, at 0,25 m water depth. The research results indicated that the parameters which showed significant effects were the model height and the model density. These parameters showed the t
PENAMBAHAN SERAT YANG OPTIMAL TERHADAP KUAT TEKAN BETON PADA BETON NORMAL budiman budiman
INOVTEK POLBENG Vol 8, No 2 (2018): INOVTEK VOL.8 NO 2 - 2018
Publisher : POLITEKNIK NEGERI BENGKALIS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (629.9 KB) | DOI: 10.35314/ip.v8i2.477

Abstract

Intisari-SNI03-2847-2002, Beton merupakan campuranantarasemenportlandatau semenhidraulikyang lain, agregathalus,agregatkasar,dan air,denganatautanpabahantambahanyang membentukmasapadat. Penelitian ini bertujuan untuk menentukan pengaruh penambahan serat serabut kelapa (SSK) terhadap karakteristik beton dan menentukan nilai kuat tekan karakteristik beton. Variasi penambahan serat serabut kelapa (SSK) sebesar 0%; 0,3%; 0,6%; 0,9%; dan 1,2% terhadap berat semen. Penelitian ini merupakan penelitian laboratorium berbasis sampel dan analisis karakteristik uji tekan beton.Hasil penelitian menunjukkan bahwa dengan penambahan serat serabut kelapa (SSK) pada campuran beton mempengaruhi nilai kuat tekan karakteristik beton. Dimana nilai kuat tekan karakteristik beton meningkat pada penambahan SSK 0,3% dan SSK 0,6%, menurun setelah penambahan SSK 0,9% dan SSK 1,2%. Nilaif’c karakteristik beton pada penambahan SSK 0,3% dan SSK 0,6%sebesar 84,12 Kg/cm2 dan 69,84 Kg/cm2 terjadi peningkatan sebesar 20,41% dan 3,45%. Peningkatan nilai kuat tekan beton yang terjadi tidak signifikan jika dibanding beton tanpa SSK (beton normal) dengan nilai f’ck sebesar 66,34 Kg/cm2. Penurunan nilai f’ckterjadi pada proporsi penambahan SSK 0,9% dan SSK 1,2% dengan nilai f’ck diperoleh masing-masing sebesar, 63,5 Kg/cm2 dan 44,47 Kg/cm2 pada umur 28 hari.Kata Kunci - Beton Normal, SSK, Kuat  Tekan Karakteristik (f’ck)
Co-Authors Anang MT Daniel Daniel Imran Imran Irwan Rauf Mozez Sendana Ramli Kotabanda Rekayasa Hadianto Syilviana Dwi Adhistie WTP, James