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PENGARUH PENAMBAHAN RUMUT ILUNG SEBAGAI BAHAN STABILISASI TANAH ( STUDI KASUS TANAH LUNAK DESA SUNGAI KALI ) KABUPATEN BARITO KUALA Rasidi; Norminawati Dewi
Jurnal Rekayasa Konstruksi Vol. 3 No. 1 (2024): Jurnal Rekayasa Konstruksi
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat Politeknik Negeri Tanah Laut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/jrk.v3i1.41

Abstract

Stabilisasi tanah merupakan suatu upaya yang digunakan untuk memperbaiki sifat tanah dasar sehingga mutunya dapat lebih baik dan dapat meningkatkan kemampuan daya dukung tanah. Salah satu upaya stabilisasi yaitu dengan cara mencampurkan beberapa bahan tambah ke dalam tanah untuk meningkatkan salah satu parameter daya dukung tanah yaitu kuat geser dan kuat tekan tanah. pengujian sifat fisis tanah sebelum dilakukan stabilisasi tanah menggunakan rumut ilung tanah sungai kali cenderung tanah di katakan biasa sampai dengan jelek untuk dijadikan sebagai bahan tanah dasar suatu konstruksi hal ini diperoleh berdasarkan uji analisa saringan dengan menggunakan klasifikasi AASHTO dan tanah tergolong sebagai kerikil berlanau, campuran krikil-pasir-lanau dan kerikil berlempung, campuran kerikil-pasir-lempung menggunakan sisstem klasifikasi USCS berdasarkan uji analisa saringan. Sifat fisis lainnya diperoleh dari uji kadar air, berat volume, LL, PL, dan GS tanah sebelum ditambahkan rumut ilung memiliki nilai masing-masing sebesar 28%; 0,977 gr/cm3; 47,5 LL; 44,64 PL dan 2,501 GS. Sedangkan setelah dilakukan penambahan rumut ilung nilai uji kadar air, berat volume, LL, PL, dan GS tanah berubah menjadi 12,887%; 17,547 gr/cm3 ; 62 LL; 42,39 PL dan 0,785 GS. Sehingga dari hasil nilai pengujian fisis tanah tersebut dapat dilihat bahwa tanah tanpa rumut ilung dan menggunakan rumut ilung mengalami perubahan yang cukup signifikan. Oleh karena itu dapat ditarik kesimpulan berdasarkan uji fisis tanah bahwa rumut ilung dapat mempengaruhi stabilisasi tanah lunak yang terdapat didesa sungai kali, Barito kuala.
Aplikasi perangkat lunak AFES untuk perancangan pondasi dangkal pada kandang ayam close house di Politeknik Negeri Tanah Laut Norminawati Dewi; Muhammad Azhar; Muhammad Rizan Adam
PADURAKSA: Jurnal Teknik Sipil Universitas Warmadewa 167-176
Publisher : Program Studi Teknik Sipil, Fakultas Teknik dan Perencanaan, Universitas Warmadewa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22225/pd.13.2.10942.167-176

Abstract

The construction of a poultry house with a close house system at Politeknik Negeri Tanah Laut aims to support student learning and research in modern agricultural practices. This facility integrates cutting-edge technology for optimal environmental control, providing a practical platform for academic. The primary focus of this study is to analyze soil investigation data and demonstrate the efficiency of shallow foundation design using the AFES software. Soil investigation at the project site revealed that the subsoil predominantly consists of clayey silt to silty clay, with depths ranging from 0.4 m to 6.6 m at borehole S1 and 0.6 m to 8.0 m at borehole S2. These findings provided essential input parameters for the foundation design process. Utilizing AFES software significantly streamlined the design workflow by offering three key outputs design drawings, 3D models, and detailed reinforcement and design criteria summarized in a comprehensive report. Additionally, the software generated a bill of materials, facilitating accurate cost estimation for the foundation construction. The results demonstrate the practical application of AFES in accelerating foundation design while maintaining accuracy and efficiency. This study underscores the importance of integrating advanced computational tools with thorough geotechnical investigation, offering a reliable and cost-effective foundation solution tailored to the unique requirements of the site.
KAJIAN KORELASI NILAI BERAT JENIS TERHADAP KUAT TEKAN BATU BATA KONVENSIONAL, BATU BATA DENGAN CAMPURAN ABU AKASIA DAN BATU BATA ABU LAS KARBIT Marlia Adriana; Norminawati Dewi; Budi Kurniawan; Intan Safitri; Tekad Budiantoro
Jurnal Pensil : Pendidikan Teknik Sipil Vol. 15 No. 1 (2026): Jurnal Pensil : Pendidikan Teknik Sipil
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jpensil.v15i1.61099

Abstract

This study aims to analyze the correlation between specific gravity and compressive strength of conventional bricks and those mixed with acacia wood ash and carbide lime ash as environmentally friendly additives. The research program involved preparing brick specimens with a composition of 85% clay and 15% additive, combined with water contents of 20 ml, 25 ml, and 35 ml. The specimens were molded, air-dried for 7 and 14 days, and subsequently tested for specific gravity and compressive strength. The results indicate that bricks incorporating acacia wood ash exhibited the highest specific gravity and compressive strength compared to conventional bricks and bricks mixed with carbide welding ash. The maximum specific gravity of 5.967 g/cm³ and the highest compressive strength of 12.603 MPa were achieved by acacia ash bricks at 14 days of curing. A positive correlation was observed between specific gravity and compressive strength, indicating that increased density significantly enhances mechanical performance. A positive correlation between density and compressive strength suggests that higher density is associated with greater mechanical strength. This study demonstrates the potential of using acacia ash waste as a filler to enhance brick strength without requiring combustion. The application of acacia ash not only enhances mechanical properties but also reduces energy consumption and production time, supporting the development of sustainable and environmentally friendly brick manufacturing technologies.
Co-Authors Budi Kurniawan Budi Kurniawan Ines Saraswati Machfiroh Intan Safitri Intan Safitri Intan Safitri Jihan Alya Nabillah Marlia Adriana Marlia Adriana Marlia Adriana Miliyati, Dewi Fitria Misnawati Misnawati Misnawati Muhammad Azhar Muhammad Hario Fatah Muhammad Nafis Nizar Muhammad Rizan Adam Rasidi Suhaimi Tekad Tekad Budiantoro Widiya Astuti Alam Sur Widiya Astuti Alam Sur Yuliyanti, Wan