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Karakteristik Mekanis Material Geokomposit Ringan Tanah – EPS Stabilisasi Fly Ash Ichsan Rauf; Tri Harianto; Ardi Arsyad; Astiah Amir
Jurnal Teknik Sipil dan Teknologi Konstruksi Vol 7, No 1 (2021): Jurnal Teknik Sipil & Teknologi Konstruksi
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (653.411 KB) | DOI: 10.35308/jts-utu.v7i1.3064

Abstract

This laboratory experiment intended to develop lightweight embankment material in using fly ash as a stabilized agent on soft soil and the addition of expanded polystyrenes (EPS). The fly ash derived from combustion of palm shells and tea in drinks manufacture process. In order to analyze the performance of this material, compressive strength test were applied to several composition and treatment on each sample. The samples were prepared with composition of binding agent between 3%, 5%, 10% and 15% based on samples weight, meanwhile the addition of EPS with composition 10% and 20% based on samples volume. The results presented that the highest compressive strength were founded at 5% of POFA, further it is noted that the inclusion of EPS as a soil subtitution decrease the compressive strength. While, the curing periods have a significance effect on the engineering properties of lightweight materials. 
DESIGN CRITERIA OF SOIL-FIBER MIXTURES AS A MATERIAL FOR LANDFILL COVER BARRIER SYSTEM Tri Harianto
Lowland Technology International Vol 16 No 1, June (2014)
Publisher : International Association of Lowland Technology

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Abstract

The design criteria were introduced in this paper to design a landfill cover barrier layer using the compacted soil-fiber mixture for the future application (i.e. park, residential, etc.). Polypropylene (C3H6) fiber was used as an additive material for soil samples. The soil specimens compacted under the conditions of maximum dry density and optimum water content. In this study, the design objective in using the compacted soil-fiber mixture is to determine the range of fiber content (i.e. 0.0% - 1.2%) within which the soil specimens will have adequate compaction characteristics, compressive and tensile strength, minimum amount of cracking, and low hydraulic conductivity. It is found that the fiber content that maximized the maximum dry density was considered insignificant. Fiber content in excess of 0.8% showed significant increase in the unconfined compressive strength. The tensile strength significantly increased for soil specimens exceeding 0.2% of fiber content. An acceptable limiting value of the crack intensity factor to prevent desiccation cracking for soil specimen was found between 0.6 and 0.8% of fiber content. Moreover, the fiber contents up to 1.2% maintained the hydraulic conductivity within acceptable levels. As a result, the optimum fiber content that was necessary to meet the overall acceptable zones based on the parameter design investigated in this study was found and reported in this study.
Study on the Correlation of CPT value to Soil Parameters Abigail Anggie Putriana Onggosandojo; Tri Harianto; Sitti Hijraini Nur
Lowland Technology International Vol 23 No 3 (2021): Lowland Technology International Journal
Publisher : International Association of Lowland Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0001/ialt_lti.v23i3.1243

Abstract

Soil is one of the factors that has the most important role because it bears the burden of all the constructions that stand on it. Based on this very important role of soil, prior to the start of construction in a location, a soil investigation must be carried out first to find out the condition of the subgrade at the construction site. One of the most frequently used soil investigation methods is Cone Penetration Test (CPT). The purpose of this study includes two things, namely to determine the soil profile at the CPT test location, and to determine the correlation between the data from the Cone Penetration Test results with soil parameters (Soil Volume Weight, Cohesion, and Internal Shear Angle). The method used in this study is to analyze the data from the Cone Penetration Test using the results of the research that has been carried out as a basis for determining the soil profile and the required soil parameters. The results obtained are, the first is based on the data plot on the soil type graph at the Cone Penetration Test (CPT) test location spread over 4 zones, namely Zone 3, Zone 4, Zone 5, and Zone 6. The second is the correlation between soil unit weight and Conus Resistance values are directly proportional, as are Cohesion and friction angles. In addition, the equations used in this paper cannot be used as the main reference, but only used to predict soil parameters when in the field
Sosialisasi Aplikasi Teknologi Building Information Modelling (BIM) pada Sektor Konstruksi Indonesia Fakhruddin -; Herman Parung; Muhammad Wihardi Tjaronge; Rudy Djamaluddin; Rita Irmawaty; Andi Arwin Amiruddin; Abdul Rahman Djamaluddin; Tri Harianto; Achmad Bakri Muhiddin; Ardi Arsyad; Sitti Hijraini Nur
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 2 No 2 (2019): Aplikasi Teknologi untuk Hidup Masyarakat yang Lebih Baik
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (896.338 KB) | DOI: 10.25042/jurnal_tepat.v2i2.82

Abstract

Building Information Modelling (BIM) adalah sebuah pendekatan untuk desain bangunan, konstruksi, dan manajemen. Software Tekla merupakan revolusi baru dalam bidang rekayasa struktur yang memiliki beberapa keunggulan dibanding program aplikasi lainnya. Tekla Structures merupakan perangkat lunak Building Information Modelling (BIM) yang memungkinkan untuk membuat dan mengelola data secara akurat dan rinci, serta dapat membuat model struktur 3D tanpa melupakan material dan struktur yang kompleks. Penggunaan BIM di Indonesia masih hanya sebatas menjawab persoalan bagaimana mengefisiensikan kebutuhan tenaga kerja, waktu dan uang. Jika kita berkaca pada bagaimana pengaplikasian metode BIM di negara lain, potensi yang dicapai dari pengaplikasian metode BIM di Indonesia masih jauh dari kata maksimal. Tantangan selanjutnya adalah bagaimana mengenalkan teknologi aplikasi BIM ini dan mendorong penerapan BIM ini ke seluruh pihak stakeholder sektor konstruksi yang terkait. Maka dari itu, kegiatan pengabdian pada masyarakat ini bertujuan untuk memberikan pengenalan tentang Building Information Modelling dan memberikan keterampilan dasar dalam penggunaan aplikasi teknologi BIM dengan software Tekla Structures. Kegiatan ini dilaksanakan di Departemen Teknik Sipil, Universitas Hasanuddin yang dihadiri oleh 35 peserta yang berasal dari kalangan praktisi dan akademisi. Tahapan kegiatan pengabdian meliputi kegiatan sosialiasi ke stakeholder melalui mitra Lembaga Pengembangan Jasa Konstruksi Provinsi Sulawesi Selatan (LPJKP Sul-Sel), pengumpulan data berupa shop drawing, pembuatan modul, pemodelan dan laporan berupa quantity dan gambar kerja.
KINERJA TANAH LUNAK STABILISASI FLY ASH DENGAN PERKUATAN SERAT ALAMI SEBAGAI LAPIS PENUTUP LANDFILL Sukirman Nurdin; Lawalenna Samang; Tri Harianto
JURNAL INERSIA Vol. 8 No. 2 (2016): Jurnal Inersia
Publisher : POLITEKNIK NEGERI SAMARINDA

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Abstract

Penggunaan tanah lempung sebagai lapisan penutup pada sistem landfill menjadi pilihan alternatif yang banyak digunakan dihampir seluruh sistem landfill yang ada di Indonesia maupun di dunia. Selain biaya pengadaan yang relatif murah ketersediaannya hampir di seluruh wilayah Indonesia. Namun alternatif lapisan penutup landfill yang handal belum banyak dibahas dan diteliti. Telah banyak penelitian eksperimental tentang perkuatan tanah menggunakan serat alami maupun serat sintetis. Penelitian sebelumnya oleh Azadegan, et.al. menunjukkan bahwa penambahan serat pada tanah tidak memperbaiki potensi pengembangan pada tanah, dimana semakin besar prosentase serat semakin besar terjadi perubahan volume tanah, tetapi penambahan serat dapat mengurangi potensi retakan pada tanah baik secara horisontal maupun vertikal, serta meningkatkan kuat tekan, modulus elastisitas dan regangan batas. Penelitian sebelumnya hanya mengevaluasi efek dari serat sintetis pada perilaku lempung, sehingga diperlukan penelitian mengenai cara meningkatkan kekuatan tanah lempung yang dikuti penurunan hidrolik konduktifitas pada tanah yang distabilisasi dengan serat alami. Tujuan penelitian ini adalah untuk merancang suatu lapisan penutup yang ideal pada landfill yang distabilisasi dengan fly ash dan perkuatan serat alami (Palm Oil Fiber) . Hasil penelitian ini menunjukkan bahwa kinerja tanah lempung yang distabilisasi fly ash dan perkuatan serat alami (Palm Oil Fiber) menunjukkan terjadi peningkatan yang besar terhadap nilai kuat tekan undrained (qu) tanah dan peningkatan tingkat kepadatan tanah.