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PENGARUH WAKTU PEMERAMAN TERHADAP DAYA DUKUNG STABILISASI TANAH LEMPUNG LUNAK MENGGUNAKAN TX-300 Muhammad Jafri; Setyanto Setyanto; A Ricky Aprinal
Rekayasa : Jurnal Ilmiah Fakultas Teknik Universitas Lampung Vol 18, No 3 (2014): Edisi Desember 2014
Publisher : UNIVERSITAS LAMPUNG

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Abstract

Soil is a material that serves as an support for the basis of a constuction, be it construction of buildings, bridges and roads. Each region has different soil characteristics in other regions, there is high and has a bearing capacity of those that are low. To improve the soil characteristics that can lead to low bearing capacity, the necessary repairs to soil stabilization methods. Stabilization efforts are often undertaken by stabilizing additives. In this research using a chemical additive material that is TX-300, which is expected to improve the characteristics of the soil so the soil is worthy of a construction established. Soil samples that tested in this research is the soft clay are derived from Rawa Sragi, East Lampung. This study used soil mixed with ash content about 0,9 ml with the optimum variation of curing time used is 7 days, 14 days and 28 days. Based on the test of physical properties of original soil, AASHTO classifies soil samples in group A-7 (clay soil) and subgroup A-7-5, while the USCS classifies soil samples as fine-grained soil and belonging to CH group. The results of laboratory studies indicate that the stabilization material using TX-300 can improve the physical and mechanical properties of soft clay. The soil that has been stabilized with TX 300 has increased the value of specific gravity and bearing capacity and it is decreased of liquid limit and indeks plastisity of soft clay. Based on the test results, this type of clay is not too good to be used as a ground subgrade for road construction, because its PI’s value is about ≥ 10% despite value of CBR is plenty high.
Pengaruh Kejenuhan Air Tanah Lempung Organik Menggunakan Permodelan Laboratorium Chintia Makki; Setyanto Setyanto; Lusmeilia Afriani
Jurnal Rekayasa Sipil dan Desain Vol 5, No 2 (2017): Edisi Juni 2017
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

The limited area for civil construction is affecting people to make building construction upper the clay- organic. The speciment of investigation soil wasobtained in Jabung, East Lampung. The speciment of soil obtaindirect shear and vane shear modeling test usingglass box with contain ±130,730gram/ 130,7kgof soil. Direct shear test for 30 cm depth below surfaceundrained soil obtainsomeresult.The result are forshearing strain is 0,1286 kg/cm2, shearing strain of vane shear test is 0,61 kg/cm2, and the value of bearing capacity is 1,4103 kg/cm2. for 50 cm depth below surfaceundrained soilintoobtain result for shearing strain is 0.1196 kg/cm2, shearing strain of vane shear test is 0,61 kg/cm2, and the value of bearing capacity is 1,7018 kg/cm2. Direct shear test for 30 cm depth below surfacedrained soilobtain result for shearing strain is 0,1286 kg/cm2, shearing strain of vane shear test is 0,61 kg/cm2, and the value of bearing capacity is 1,0347 kg/cm2 , for 50 cm depth below surfacedrained soilobtain result for shearing strain is 0,0861 kg/cm2, shearing strain of vane shear test is 0,46 kg/cm2, and the value of bearing capacity is 1,3997 kg/cm2 From the direct shear and vane shear test, it was obtained that shearingstrain in direct shear test is lower than vane shear test. Keywords: Direct Shear Test, Vane Shear Test, Shearing Strain, The Clay-Organic, Bearing Capacity
Studi Pengaruh Penambahan Bahan Additive TX-300 Terhadap Kuat Tekan Batu Bata Pasca Pembakaran Alhadi Pratama Bintang; Setyanto Setyanto; Idharmahadi Adha
Jurnal Rekayasa Sipil dan Desain Vol 3, No 3 (2015): Edisi September 2015
Publisher : Jurnal Rekayasa Sipil dan Desain

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Abstract

Along with the rise of civil construction such as housing or settlements, also increase the demandfor bricks. To be able to meet the needs of these bricks, brick production must be increased. Notonly an increase in production should be done, but the increase in terms of quantity and in termsof quality also needs to be done. One way to do is to add an additional mixture to the compositionof the brickyardIn this study used clay and additional materials TX-300 which has a variety of levels of 0.6 ml, 0.9ml, 1.2 ml and 1.5 ml with the purpose to improving the quality of the bricks, as well as comparingstrong press bricks by modifying the combustion time. Soil samples tested in this study is claywhich derived from Nyunyai street, Rajabasa, Bandar Lampung. Variations of burning time is usedfor one day, two days and three days.After doing research, from the fourth level, the compressive strength maximum average post-combustion bricks are at a level of 1.5 ml with a burning for two days. The compressive strengthvalue of 46.01 kg / cm2. This is due to the greater levels of TX-300, the greater the compressivestrength value, besides the most optimum burning time is for 2 days, this was due to theevaporation of water contained in the most optimum bricks are burning for two days.Keywords: Bricks, Clay, TX-300, Compressive Strenght
Analisis Desain Pondasi Rakit untuk Bangunan Bertingkat dengan Metode Konvensional Dhyna Annisa Maghfira Bahagianda; Setyanto Setyanto; Idharmahadi Adha
Jurnal Rekayasa Sipil dan Desain Vol 5, No 2 (2017): Edisi Juni 2017
Publisher : Jurnal Rekayasa Sipil dan Desain

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The foundation of the building is usually divided into two parts: shallow foundation and deep foundation, depending on the location of hard soil and the depth ratio with the width of the foundation (D ≤ B). The foundation of this raft serves to mediate the surface of one or more columns within several lines or paths with the ground. The use of the raft foundation is used when the decline is a problem eg in soft soil. The foundation of raft becomes alternative choice seen from external factor that is implementation process which do not give impact to surrounding environment or building around it. In this study conducted data collection obtained from the results of laboratory tests in the form of data sondir results, SPT results and data in the form of load structures and field load tests and building analysis load. From the laboratory results and the subsequent building load, the calculation of the force field with the SAP 2000 program, calculate the maximum carrying capacity of the raft foundation under review, calculate the decline of the raft foundation and obtain the result of the structural requirements of the raft foundation. Based on the results of the analysis in this study found the carrying capacity of soil for raft foundation of 907.643 kN/m2. While the maximum voltage distribution at the base of the raft foundation due to the load and moment is 38.0696 kN/m2.  Keywords: Raft Foundation, Bearing Capacity, Reinforcement
Aplikasi Tekanan Pada Roda Kendaraan Alat Berat di Lapangan untuk Proses Pemadatan Tanah terhadap Daya Dukung Lapisan Tanah Dasar (Subgrade) Tessya Febrania; Setyanto Setyanto; Rahayu Sulistyorini
Jurnal Rekayasa Sipil dan Desain Vol 7, No 1 (2019): Edisi Maret 2019
Publisher : Jurnal Rekayasa Sipil dan Desain

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Daya dukung tanah dasar/subgrade pada konstruksi jalan sangat menentukan, nilai daya dukung tanah dinyatakan dengan nilai California Bearing Rasio (CBR). Pada penelitian ini membahas mengenai aplikasi tekanan pada roda kendaraan alat berat di lapangan untuk proses pemadatan tanah terhadap daya dukung lapisan tanah dasar (subgrade). Sampel tanah yang digunakan pada pengujian ini berasal dari daerah Tirtayasa, Kec. Sukabumi, Bandar Lampung. Pengujian sampel menggunakan alat tekan modifikasi sebanyak delapan belas sampel untuk pemadatan standar, tekanan yang digunakan dalam pengujian sebesar 2,7 MPa, 7 MPa dan 8,4 Mpa.Hasil pengujian di laboratorium sampel tanah digolongkan sebagai kelompok tanah A-2-7 yaitu tanah berlempung. Nilai CBR tanpa rendaman dari pengujian pemadatan tanah menggunakan standard proctor sebesar 2,7%, sedangkan untuk nilai CBR rendaman sebesar 2%. Nilai CBR tanpa rendaman dari pengujian pemadatan tanah dengan metode tekanan pada masing-masing tekan sebesar 3,9%, 5,4% dan 5,8%, sedangkan untuk kondisi rendaman didapatkan nilai CBR sebesar 0,25%, 1,57% dan 1,83%. Nilai CBR mengalami peningkatan seiring bertambahnya tekanan yang diberikan pada sampel.Kata kunci: Alat tekan modifikasi, alat berat, Standard Proctor, California Bearing Rasio (CBR), pasir berlempung.
METODE PERHITUNGAN ANALISIS STABILITAS LERENG DENGAN PERKUATAN SHEET PILE MENGGUNAKAN PROGRAM GEOSTRUCTURAL ANALYSIS VERSI 19 (STUDI KASUS LERENG SUNGAI KOMERING DI KABUPATEN OGAN KOMERING ILIR) Achmad Wibrian; Setyanto Setyanto; Amril Ma'ruf Siregar Ma'ruf Siregar
Jurnal Rekayasa Sipil dan Desain Vol 5, No 1 (2017): Edisi Maret 2017
Publisher : Jurnal Rekayasa Sipil dan Desain

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Slope stability analysis of Komering River in Ogan Komering Ilir, South Sumatra was done to handle the problem of sliding or scouring at the cliffs which are often found on the outside corner of the river. Komering River is a river with meandering pattern that is very susceptible to scouring on the outside of the bend and sedimentation on the inside of the bend. This research focuses on the study of slope stability analysis with sheet pile used as method. Analysis was conducted using Geostructural Analysis version 19 and was compared to manual calculation.Data analysis on the result of soil testing was performed to identify soil properties. The obtained results were then used in slope stability analysis. Slope stability analysis was performed in two conditions maximum groundwater level and normal groundwater level using Bishop method and Fellenius method. The results of manual calculation were then compared with the results of Geostructural Analysis Program Version 19. Sheet pile was selected as slope stabilization measures. Analysis after stabilization is done with the same steps as analysis before stabilization.The results from the two methods showed a quite significant difference. The results obtained from Bishop method before stability measure and after stability measure were 1,018 and 4,23 respectively. Whereas, the results obtained from Fellenius method before stability measure and after stability measure were 0,75 and 3,42 respectively. Based on these results, it can be concluded that sheet pile is an effective slope stability measure.Keywords: Slope stability, Geostructural Analysis Program, Bishop, Fellenius, Sheet Pile.
Pemanfaatan Alat Tekan Penetrasi Modifikasi Paving Block Untuk Melihat Nilai Kuat Tekan Yang Dipengaruhi Oleh Waktu Perendaman Menggunakan Tanah, Semen, Dan Kapur Muhammad Aldani; Iswan Iswan; Setyanto Setyanto
Jurnal Rekayasa Sipil dan Desain Vol 5, No 3 (2017): Edisi September 2017
Publisher : Jurnal Rekayasa Sipil dan Desain

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Soil sample that used as base material in this study was taken from Belimbing Sari Village area, Sub Jabung, East Lampung. Based on the testing of soil physical's characteristics, USCS classified soil samples as organic soil with medium to high plasticity and belongs to the OH group. The mixed content which used in this study was 85% soil, 10% lime, and 5% cement with curing time for 14 days, then it was divided with combustion and without combustion treatment on the paving block sample and soaked for 4, 8, 12, and 16 days. The result of this study was to obtain the average value of pressed-value on a mixture of 85% soil + 10% lime + 5% cement after the largest burning treatment and soaked for 4 days at 11.7 MPa. Thus, in addition to the combustion, the duration of immersion also affects its pressed-value. The longer it had soaked, the smaller its pressed-value would be. Therefore, this pressed-value met the requirement of the paving blocks' SNI-03-0691-1996 that was qualified on the classification of quality D which had the average pressed-value of at least 10 MPa. In addition to the pressed-value, the water absorption rate which was 15.5% -20.32% did not meet the paving blocks' requirement of SNI-03-0691-1996.Key words : Paving block, organic clay soil, compressive strength, water absorption, immersion.
Analisa Stabilitas Lereng dan Penanggulangan Kelongsoran Lereng Pada Ruas Jalan Batas Kota Liwa-Simpang Gunung Kemala, Taman Nasional Bukit Barisan Selatan, Lampung Barat hermawan arbenta; setyanto setyanto; iswan iswan
Jurnal Rekayasa Sipil dan Desain Vol 4, No 4 (2016): Edisi Desember 2016
Publisher : Jurnal Rekayasa Sipil dan Desain

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Landslide are one of the natural disasters that often occur during the rainy season. As in the area of Bukit Barisan Selatan National Park, Lampung Barat, which is a road that is always passed many vehicles. This happens because of an increase in pore water pressure on the slope, which then resulted in a decrease in shear strength (c) and friction angle (φ). Required slope stability analysis and prevention of sliding slopes experiencing.One of the slope stability analysis method used is Fellenius with countermeasures using retaining wall. Fellenius slope stability analysis method (1927) considers the forces that work on either side of any resultant slices have a zero in the direction perpendicular field of avalanche. Fellenius method provides a safe factor is relatively lower than a matter of a more thorough way.From the analysis of slope stability, slope expressed in critical condition. Countermeasures sliding slope using stone retaining wall plug and using gabion. Dimensions and gabion retaining wall that has been planned can be applied in the field so that avalanches do not occur again. Keywords: slope stability, safety factor, fellenius, retaining wall, gabion.
Analisis Struktur Bangunan Bawah Jembatan Kereta Api Way Pengubuan Aulia Vinandhitha; Setyanto Setyanto; Nur Arifaini
Jurnal Rekayasa Sipil dan Desain Vol 8, No 3 (2020): Edisi September 2020
Publisher : Jurnal Rekayasa Sipil dan Desain

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Jembatan merupakan salah satu konstruksi yang berguna untuk melancarkan proses pengiriman batu bara yang diangkut oleh KA Babaranjang. Tujuan dari penelitian ini adalah merencanakan struktur bawah jembatan kereta api dan mengetahui tingkat keamanan berdasarkan beban dari aksi tetap, aksi lingkungan, beban lalu lintas, dan aksi lainnya.  Berdasarkan penelitian analisis struktur bawah didapatkan dimensi abutment dengan tinggi 7,67 m dan panjang 6 m. Dengan dimensi abutment tersebut diperoleh angka aman untuk kontrol stabilitas guling arah x sebesar 2,5825 dan arah y sebesar 28,9128, dengan batas aman stabilitas guling sebesar 2,5. Kontrol stabilitas geser arah x sebesar 1,1003 dan arah y sebesar 1,9991, dengan batas aman stabilitas geser sebesar 1,1. Dimensi pile cap digunakan tebal 1,5 m, lebar 8,8 m, dan panjang 6 m. Pondasi yang digunakan adalah pondasi tipe bored pile dengan diameter sebesar 1 m dan kedalaman sebesar 6 m. Jumlah pondasi yang dipakai 12 buah dengan susunan 3 x 4. Dan diperoleh daya dukung aksial maksimum sebesar 1979,497 kN serta daya dukung aksial izin sebesar 3072,403 kN. Kata Kunci : Struktur Bawah Jembatan, Abument, Pile Cap, Bored Pile
ANALISIS PENGARUH PENAMBAHAN ZAT ADDITIVE ISS 2500 TERHADAP KUAT TEKAN BATU BATA DENGAN DAN TANPA PROSES PEMBAKARAN Aria Febriantama; Lusmeilia Afriani; Setyanto Setyanto
Jurnal Rekayasa Sipil dan Desain Vol 4, No 1 (2016): Edisi Maret 2016
Publisher : Jurnal Rekayasa Sipil dan Desain

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Brick is a material t h a t made of clay. Bricks were made with or without additional mixturel throughsome processes and stages. I n t his study used the clay with additional mixture 2500 ISS ( Ionic SoilStabilizer ) which has variety levels mixture of 0,9 ml, 1,2 ml , 1,5 ml and 2,1 ml with the intention to improvethe quality of brick. It is necessary to do the research , so this study can be compared with SNI standards.The tested samples in this study are clay that comes from jl . Nunyai , Rajabasa . It sample was curing for 7day and then, the samples will be done with or without burning process.Based on the results of physical testing the samples, USCS classify soil samples as clay with low plasticityand belongs to the ML group . After doing research of compressive strength testing of with and withoutburning process from four levels generating the compressive strength maximum average at a level of 2.1 mlboth of them. With value 21,24 kg / cm 2 for burning process and 4.25 kg / cm 2 for without burning process.Which is both of those treatments are not included into 25 classes based on tables strength of compressedbricks ( SNI 1991 ).Keywords: brick, clay, iss 2500 (ionic soil stabilizer), compressive strength.