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All Journal SMARTek JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR
Arifin B.
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Civil Engineering, Building, Construction & Architecture Education

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PENGGUNAAN ABU BATU BARA PLTU MPANAU SEBAGAI BAHAN STABILISASI TANAH LEMPUNG B., Arifin
SMARTek Vol 7, No 4 (2009)
Publisher : SMARTek

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Abstract

Penelitian ini bertujuan memeriksa pengaruh stabilisasi tanah lempung menggunakan bahanstabilisasi Abu batu bara dan semen. Abu batu bara yang digunakan adalah abu bara hasilpembakaran dari PLTU Mpanau Kecamatan Tawaeli Kota Palu yang lolos saringan No.200, tanahlempung yang diuji memiliki indeks plastisitas lebih besar dari 20. Sifat yang diperiksa adalah:perubahan batas cair, kepadatan maksimum dan nilai CBR. Proporsi rancangan campuran terdiridari abu batu bara adalah 10% dan 20% semen sebesar 4% dan 8% masing-masing terhadapberat kering tanah lempung,.Hasil penelitian menunjukkan bahwa campuran abu batu bara dansemen mampu menurunkan nilai indeks plastisitas tanah lempung dari 27,33% menjadi 10,37 %,meningkatkan nilai CBR tanah dari 4,46% menjadi 13,8% untuk CBR rendaman dan dari 5,6%menjadi 15,5% untuk CBR tanpa rendaman
Uji Model Dinding Penahan dengan Timbunan Diperkuat Perkuatan Fleksibel B., Arifin
SMARTek Vol 4, No 4 (2006)
Publisher : SMARTek

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Uji model ini dilakukan untuk mengetahui sejauh mana pengaruh tekanan tanah lateral pada dinding penahan dengan tanah isian yang diperkuat perkuatan fleksibel (Perkuatan Tidak Tertancap Pada Dinding) pada pengujian laboratorium. Parameter yang di periksa adalah panjang perkuatan (LR) dan spasi vertikal (SV). Hasil penelitian ini menunjukkan bahwa penyisipan perkuatan dapat memberikan reduksi tekanan tanah lateral yang maksimal dengan nilai reduksi rata – rata diatas 50 % untuk rasio parkuatan (LR/H) 0,5 – 1 H pada rasio spasi vertikal (SV/H) antara 0,08 – 0,33
Pengaruh Abu Sabut Kelapa Terhadap Koefisien Konsolidasi Tanah Lempung B., Arifin
SMARTek Vol 6, No 4 (2008)
Publisher : SMARTek

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Abstract

Penelitian ini bertujuan memeriksa pengaruh penambahan abu sabut kulit kelapa terhadap perubahan nilai kofisien konsolidasi (Cc) tanah lempung. Abu sabut kulit kelapa (ASK) yang digunakan lolos saringan No.200, tanah lempung yang diuji memiliki plastisitas lebih besar dari 15. Sifat yang diperiksa adalah: perubahan Batas Cair (LL) untuk mendapatkan hubungannya dengan perubahan nilai Cc. Proporsi rancangan campuran adalah 1%, 2%, 3%, 4%, dan 6% berat abu sabut kelapa terhadap berat kering tanah lempung, kemudian disimulasikan dengan pengujian lain dimana setiap proporsi tersebut ditambahkan campuran semen portland sebesar 3%.Hasil penelitian menunjukkan bahwa campuran abu sabut kelapa dan semen  portland (ASK 6% + PC 3%) dapat menurunkan nilai Cc sebesar 5,23% dari kondisi asli yaitu 0,495 menjadi 0,470, serta untuk Abu sabut kelapa sendiri mampu menurunkan nilai Cc tanah asli sebesar 3,12% yaitu dari 0,495 menjadi 0,480
PERENCANAAN ALTERNATIF PONDASI KONSTRUKSI SARANG LABA-LABA PADA PALU GRAND MALL Magfira, Dwi; B., Arifin; Rahayu, Astri
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 1 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Palu Grand Mall located at Diponegoro street, West Palu districts, PERENCANAAN ALTERNATIF PONDASI KCentral Sulawesi using foundation Konstruksi Sarang Laba-Laba( KSLL ). TheKonstruksi Sarang Laba-Laba is a combination of continuous flat concrete slab foundation system with a soil improvement system. This system is specifically utilizes the ground as part of the foundation structure. The purpose of thisresearchare to redesign KSLL foundation that is qualified for qgross ≤ qijin.Parameters that used are sondir test results, borlog, as well as laboratory testing such as bulk density and coefficient of consolidation (Cv). The analysis begins with the soil classification, load analysis using SAP. Then calculate the bearing capacity of the foundation, the maximum soil stress,  potential settlement, equivalent thickness, KSLLreinforcement dimensions, and RAB in Palu Grand Mall.Based onCPT test results on the location it was obtained that the soil classification is clay for soil at the depth of 0-12 m, clayey silt for soil at the depth 12-15 m and gravelly sand at a depth of 15-20 m. The results obtained from SAP is 356.80 ton for the maximum load. For one segment with a size of 8 mx 8 m the foundation bearing capacity was 335.54 ton/ m². Calculation of the area of load distribution which is reviewed each segment was 11.599m² for construction rib and 11.034 m² for ribsettlement. Control of qgros and qall are met, which a rib construction is qgros 30.762 t/m² <qall335.545 t/m² and rib settlement qgros 32.337 t/m² <qall335.545 t/m². From the calculation it was obtained thatthe maximum soil stress are 3,613 t/m², the potential settlement 4,256 cm for a period of 12 years. Equivalent thickness of rib construction is 125 cm and 170 cm for rib settlement. The reinforcement in the rib construction and rib settlement are using the size of Ø10-15 cm (As = 471 mm²) on the condition ρmin< ρ < ρmax. The budget plan calculation results showed that for earthwork the budget is Rp. 13,948,320 and Rp. 130.620.019,77 for KSLL foundation work per segment Keywords: bearing capacity, settlement, foundations, konstruksi sarang laba-laba
RASIO HUBUNGAN NILAI DAYA DUKUNG TIANG PANCANG BERDASARKAN PENGUJIAN SONDIR, KALENDERING DAN TES PDA PADA JEMBATAN PELAWA KABUPATEN PARIGI MOUTONG Gunawan, Muhammad; Oktaviana, Ida Sri; B., Arifin
JOURNAL TEKNIK SIPIL DAN INFRASTRUKTUR Vol 4, No 1 (2014)
Publisher : Jurusan Teknik Sipil Universitas Tadulako

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Abstract

Bearing capacity of pile foundation bearing capacity is influenced by several factors, such as the amount of applied loads and non-homogeneous soil characteristics. To determine the bearing capacity of single pile foundation the static method is used on the basis of CPT data and dynamic methods based on dynamic pile and PDA tests. Pile foundations of the Pelawa bridge used in this study are located in the District of Parigi - Moutong. The study of literatures and secondary data such as the data of driven pile equipment, driven piles , CPT, dynamic pile tests, and PDA tests are used for analyzing the pile bearing capacity . Meyerhof method, Aoki de Alencar, LCPC, Price and Waldre, and Schmertmann are used to determine the bearing capacity of pile based on sondir (CPT) data. The dynamic pile tests data are used to calculate the bearing capacity of the piles by using methods of Hiley, Olsen and Flaate , Enginering News Record (ENR) , Janbu Mansur and Hunter , and AASHTO . The results show that  the lowest dan the highest of the ultimate bearing capacities  for static methods (CPT data) are  114.096 tons (Aoki De Alencar) and 305.479 tons (Schmertmann) respectively. Kalendering method (dynamic pile data) show that the lowest value of 284.22 tons were obtained from equation given by Hiley and the highest 1450.26 tons were obtained from equation given by  Janbu.The range of 171.2 tons - 174.5 tons were given for PDA test data. The ratio between CPT to PDAs results that are closest to the value of 1 which is 0.938 is the value that obtained from Meyerhof’s equation, while the ratio between dynamic method (kalendering) to PDAs results that are closest to the value of 1 which is 1,660 is the value that obtained from Hiley equation Keywords: single pile bearing capacity, CPT, dynamic pile test, PDA test
Co-Authors Astri Rahayu Dwi Magfira Ida Sri Oktaviana Muhammad Gunawan