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All Journal Jurnal Ilmiah MITSU (Media Informasi Teknik Sipil Universitas Wiraraja) Publikasi Riset Orientasi Teknik Sipil (Proteksi) Jurnal Rekayasa Infrastruktur Sipil
Aswadi, Lalu Samsul
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Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Environmental Science Transportation

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STUDI EKSPERIMENTAL MODULUS OF RUPTURE DAN MODULUS OF ELASTICITY LAMINATED VENEER LUMBER KAYU SENGON Aswadi, Lalu Samsul; Yuwana, Dwi Sat Agus; Prawenti, Herlita
Jurnal Rekayasa Infrastruktur Sipil Vol 1, No 2 (2020): Jurnal Rekayasa Infrastruktur Sipil
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (28.273 KB) | DOI: 10.31002/.v1i2.3396

Abstract

Kayu sengon dengan nama ilmiah Paraserianthes falcataria yaitu suatu jenis kayu yang pertumbuhannya cepat tetapi kekuatannya kecil sehingga kayu jenis ini biasanya jarang digunakan untuk bahan struktur bangunan.. Salah satu cara untuk meningkatkan kekuatan kayu sengon yaitu dengan teknologi LVL (Laminated Veneer Lumber).Penelitian ini bertujuan untuk mendapatkan nilaiModulus of Rupture(MOR) dan Modulus of Elasticity(MOE) LVL kayu Sengon dari pengujian lentur secara eksperimental.Hasil penelitian ini diharapkan dapat memberikan sumbangan ilmiah untuk basis data sifat mekanika kayu Indonesia dan khususnya untuk perencanaan komponen struktur tekan dan lentur. Benda uji LVL kayu Sengon sebanyak 8 buah dengan dimensi 480 mm x 80 mm x 40 mm ditumpu di kedua ujungnya. Benda uji kemudian diberi beban lentur ditengah-tengah secara beangsur-angsur sampai benda uji runtuh. Kemudian dicatat berapa beban yang mampu ditahan oleh masing-masing benda uji. Dari hasil pengujian kuat lentur tersebut kemudian dihitung Modulus of Rupture(MOR) dan Modulus of Elasticity(MOE) LVL kayuSengon dari masing-masing benda uji.Dari pengujian didapatkan hasil MOR dari 8 benda uji berturut-turut yaitu 30,08 Mpa, 39,14 Mpa, 39,14 Mpa,33,96 Mpa, 35,90 Mpa, 38,17 Mpa, 39,78 Mpa dan 31,70 Mpa dengan nilai rata-rata MOR dari 8 bendauji adalah 35,98 Mpa. Hasil dari nilai MOE untuk 8 bendauji berturut-turut adalah 3436,36 Mpa, 3306,12 Mpa, 3306,12 Mpa, 3497,14 Mpa, 3469,88 Mpa, 3888 Mpa, 3353.23 Mpa dan 3351,72 Mpa dengan nilai rata-rata MOE dari 8 benda uji adalah3451,07 Mpa.
ANALISIS KEKUATAN LENTUR KAYU SENGON AKIBAT KONDISI TERENDAM AIR SUNGAI Naeni, Heni Faidatul; Arnandha, Yudhi; Aswadi, Lalu Samsul
Jurnal Ilmiah MITSU (Media Informasi Teknik Sipil Universitas Wiraraja) Vol 12 No 2 (2024): Jurnal Ilmiah MITSU
Publisher : Fakultas Teknik, Universitas Wiraraja

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24929/ft.v12i2.3471

Abstract

Soaking wood is often done by traditional communities, including the people of Jogotamu Hamlet, Loano Village, Purworejo Regency, to preserve wood to be used as construction materials such as battens and formwork. Testing the flexural strength of sengon wood beams, which are low grade wood, were immersed in river water to see the effect of the bending strength of sengon wood due to being submerged in river water. The main objective of this research is to determine the physical properties (water content, density, and specific gravity), Modulus of Rupture (MoR), and Modulus of Elasticity (MoE). Flexural strength testing of sengon beams measuring 760 mm x 50 mm x 50 mm with guidelines based on SNI-03-3959-1995 with variations without soaking, 7 days soaking, 14 days soaking, 21 days soaking, 28 days soaking, and 35 days soaking Flexural strength testing was carried out at the Structure Laboratory of the Civil Engineering Department, Faculty of Engineering, Tidar University, Magelang. The test results produced an average value of water content without soaking, soaking for 7 days, 14 days, 21 days, 28 days and 35 days respectively, namely 14.65%, 31.85%, 36.21%, 31.85%, 33.37%, and 32.84%. The average density values are respectively 0.40 gr/cm3, 0.57 gr/cm3, 0.66 gr/cm3, 0.60 gr/cm3, 0.64 gr/cm3, and 0.61 gr/ cm3. The average values of specific gravity are 0.35, 0.43, 0.48, 0.46, 0.48, and 0.46, respectively. The average Modulus of Rupture (MoR) values were 24.77 MPa, 23.82 MPa, 22.75 MPa, 23.86 MPa, 23.73 MPa, and 25.47 MPa, respectively. Meanwhile, the average Modulus of Elasticity (MoE) values are 3,495.20 MPa, 3,382.14 MPa, 3,893.05 MPa, 4,316.36 MPa, 1,689.34 MPa, 2,899.42 MPa. Based on Anova analysis, soaking sengon wood during this period resulted in the conclusion that there was no significant difference or no effect.
The Effect of Compressive Strength of Concrete with Styrofoam Waste Cement Coating on Acid Solution and Water Permeability: Pengaruh Kuat Tekan Beton Dengan Coating Cement Limbah Styrofoam Terhadap Larutan Asam Dan Permeabilitas Air Sarjano, Belany Try Aji; Aswadi, Lalu Samsul; Yuwana, Dwi Sat Agus
PUBLIKASI RISET ORIENTASI TEKNIK SIPIL (PROTEKSI) Vol 7 No 1 (2025): Vol 7 No 1 (2025)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/proteksi.v7n1.p8-16

Abstract

This research analyze the effect of styrofoam cement coating as a protective layer on normal concrete in terms of physical quality and compressive strength when exposed to Natrium Sulfat acidic solution. Styrofoam-based cement coating is chosen due to water-resistant physical properties and its ability to reduce difficult-to-decompose waste. The method related to the effect of cement styrofoam coating as a liner with cylindrical concrete test objects measuring 15 cm in diameter and 30 cm in height and a quality of fc' 20 MPa, where its implementation is based on SNI 7656-2012. The cement coating used utilizes various mixture ratios of 0%, 40%, 50%, and 60% of the solvent weight in the form of Pertalite. The process of immersion in sodium sulfate acid solution, compressive strength testing, and permeability testing were conducted in the Laboratory, Universitas Tidar. The results indicate that the addition of styrofoam cement coating can reduce the corrosive impact of Natrium Sulfat acidic solution. The 60% styrofoam mixture variation showed the best results in three testing aspects: a post-curing compressive strength test value of 21.3621 MPa, a post-immersion in Natrium Sulfat acidic solution compressive strength test value of 20.7680 MPa, and a permeability test value of 7.03x10-9.
Co-Authors Naeni, Heni Faidatul Sarjano, Belany Try Aji Yudhi Arnandha yuwana, dwi sat agus