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All Journal Jurnal Sains dan Teknologi Jurnal Teknik Sipil dan Perencanaan Jurnal Teknik Sipil Jurnal Transportasi Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Teknik Indonesian Journal Of Civil Engineering Education SIKLUS: Jurnal Teknik Sipil Jurnal Sinergitas PkM & CSR Jurnal Infrastruktur KAIBON ABHINAYA : JURNAL PENGABDIAN MASYARAKAT Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Unri Conference Series: Community Engagement SAINSTEK J-ABDIPAMAS (Jurnal Pengabdian Kepada Masyarakat) Jurnal Teknologi & Rekayasa Sipil Sewagati BATOBO: Jurnal Pengabdian Kepada Masyarakat Jurnal Jalan Jembatan Journal of Infrastructure and Construction Technology
Agus Ika Putra
Universitas Riau
Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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Potensi Likuifaksi Tanah Pasir Di Atas Tanah Lunak Dengan Variasi Tebal Timbunan Pasir Melalui Uji Model Laboratorium Bahrul Junaidi; Agus Ika Putra; Soewignjo Agus Nugroho
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Buildings in Riau, especially Pekanbaru City, are generally established on peatlands covered in sand embankment. Earthquakes often occur in the western region of the island of Sumatra due to its position along with two tectonic plate collision of earth, Indian and Eurasian plate. One of earthquake activity aftermath is liquefaction. Liquefaction can be defined as the loss of shear strength of soil due to an increase in excess pore water pressure caused by cyclical load, therefore the total stress of ground is almost entirely replaced by pore water pressure. The aim of this research is to know the influence of embankment thickness and acceleration of vibration against pore water pressure increment and soil settlement. This research was conducted by laboratory model test using shaking table. The acceleration variation used were 0.25 g and 0.32 g. The thickness variation of sand embankment used were 10 cm, 15 cm, and 20 cm placed on a 10 cm peat soil layer and given a load 40 kg/m2. Water level elevation as high as the sand layer each variation. The results of this research show that with the addition of the sand embankment thickness takes longer time to reach maximum pore water pressure increment. The thicker of sand embankment take longer time to reach maximum soil settlement during liquefaction. The addition of acceleration values leads to larger increment of pore water pressure and soil settlement, but the time it takes for pore water pressure begin to stabilize tends to be faster.Keyword : Liquefaction, embankment, peat soil, excess pore water pressure, shaking table
Potensi Likuifaksi Tanah Pasir Diatas Tanah Lunak Dengan Variasi Jenis Tanah Lunak Melalui Uji Model Laboratorium Erik Azarya Ginting; Agus Ika Putra; Soewignjo Agus Nugroho
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

In each region has a different type of soft soil, for example peat soils, soft silt soils and soft clay. Pekanbaru, the capital of Riau Province, located on the island of Sumatra where the island of Sumatra itself is an area that has a high intensity earthquake because it is located in the ring of fire. One of the earthquake impact is liquefaction. Liquefaction is a phenomenon in which the strength and stiffness of soil is reduced due to an earthquake or other earth movement. This is a process of changing the nature of the soil from solid state to a liquid state. The aim of this research to figure out the influence of soft soil variation as the native layer of sand embankment and acceleration of vibration against increase of pore water pressure and soil settlement. This research was conducted by laboratory model test using shaking table. Variations of soft soil under sand embankment used are peat soil, soft silt soil and soft clay respectively 10 cm thick and given a uniform load of 40kg / m2. Water level elevation as thick as the sand layer of each variation. The test results showed that silt soil has the largest soil settlement and pore water increase. Silt soil variation tends to require a short period to reach maximum soil sttlement during liquefaction. As the acceleration of vibration increase caused larger soil settlement and pore water pressure, but it required faster time for pore water pressure to stable.Keyword: Liquefaction, shaking table, peat,silt,clay,embankment
Pemanfaatan Pasir Pulau Bungin Kabupaten Kuantan Singingi Sebagai Agregat Halus Pada Campuran Laston Lapis Antar (AC-BC) Cici Amelia Hilman; Agus Ika Putra; Sri Djuniati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Sand of Pulau Bungin is natural sand derived from the Batang Kuantan river, Kuantan Singingi Regency. The existence of natural sand availability makes the progress of the construction of Kuantan Singingi Regency because easily obtained, and more economical no need to bring in sand material from other areas and not have to go through the process of solving stone by stone crusher. Based on the specifications of the Bina Marga 2010, the use of natural sand is to mix asphalt concrete (AC) shall not exceed 15% of the total weight of a mixture of aggregates. Therefore we need to know the efficiency use of natural sand in the mix asphalt concrete (AC) for optimum use. This research aims to find out how the levels of optimum asphalt (KAO) and knowing the characteristics of Marshall does meet the general specifications Bina Marga 2010 Revision 3. The variation of fine aggregate natural sand used in this research is 0%, 5%, 10%, 15% and 20% of the total weight of a mixture of aggregates. The addition of natural sand in asphalt concrete base course (AC-BC) causes the value of the levels of optimum asphalt (OBC) decreased. On the mixture of asphalt concrete base course (AC-BC) the addition on variation 10% of the sand obtained the value of the levels of optimum asphalt (KAO) is 6.20% and the maximum stability value is 1440.19 kg. Without considering the limitations on use of sand nature as set forth in the general specifications of the Bina Marga 2010 Revision 3, the addition of natural sand that still might be used in the asphalt concrete base course (AC-BC) until 20%.Keywords: natural Sand Pulau Bungin, asphalt concrete layer between the (AC-BC), a general specification Bina Marga 2010 Revision 3, characteristics of Marshall.
Studi Potensi Likuifaksi Timbunan Pasir Dengan Gradasi Ukuran Butiran Di Atas Tanah Lunak Putra Hasibuan; Agus Ika Putra; S A Nugroho
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The island of Sumatra is the region with the highest quake intensity. Earthquakes in Aceh, Nias, Mentawai, and Padang caused a wave of vibration in the surrounding area. In Pekanbaru many buildings are built on peat soil with sand as an embankment. Liquefaction potentially occur in the earthquake propagation zone. Liquefaction is the transformation of soil state from solid to liquid. Liquefaction potential can be analyzed based on field test and laboratory test. Laboratory test was conducted using a one-way shaking table. Vibrating table moves in a horizontal and opposite direction in a vertical direction. The acceleration variations used are 0.25g and 0.32g. Peat soil thickness used 10 cm. Sand embankment thickness used 15 cm with gradation variation and water level as high as embankment thickness. Distributed load used 40kg/m2. Evaluation of liquefaction potential by analyzing soil surface settlement observation, excess pore water pressure and effective vertical stress. The measurement of pore water pressure was measured using 0.5 mm diameter glass pipe. Soil settlement measured by using ruler. The results of the test show that along with increasing acceleration, the bigger soil settlement and pore water increment will be. Grain size is very influential on the occurrence of liquefaction potential. The test results shows that the fine graded sand had maximum settlement and excess pore water pressure so that itnhas the most extreme effective vertical stress. Well graded sand tends to stable but on 0,32g acceleration it has effective vertical stress value less than zero.Keywords : liquefaction, excess pore water pressure, shaking table, grain size
Pengaruh Waktu terhadap Daya Dukung Fondasi Tiang Bersirip pada Tanah Lunak Fikri Ananda; Ferry Fatnanta; Agus Ika Putra
JURNAL TEKNIK Vol. 14 No. 1 (2020): Edisi April 2020
Publisher : JURNAL TEKNIK UNILAK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/teknik.v14i1.3457

Abstract

Abstrak Penelitian ini mengkaji tentang pengaruh waktu terhadap peningkatan daya dukung fondasi tiang sirip dan polos. Variasi waktu pengujian dalam penelitian ini adalah 0, 1, 2, 4, 8, 16, 32 dan 64 hari, semua variasi waktu akan di analisis dan membandingkan hasil daya dukung aksial dari fondasi tiang sirip dan polos. Hasil penelitian ini menampilkan hasil perbandingan terbesar antara tiang sirip dan tiang polos yaitu sebesar 538,75%. Pengujian tiang sirip berdasarkan fungsi waktu, daya dukung aksial mengalami penurunan pada waktu pengujian 1, 4, 16 hari. Sedangkan daya untuk tiang polos selalu mengalami peningkatan berdasarkan fungsi waktu. Faktor peningkatan daya dukung (∆10) adalah sebesar 0,054 untuk tiang polos dan 0,014 unuk tiang sirip. Faktor peningkatan hasil penelitian ini lebih kecil dari penelitian sebelumnya, hal ini karena tanah yang digunakan tanah lanau organik. Tanah organik memiliki kadar air yang tinggi dan daya dukung yang rendah terhadap beban. Kata kunci: Pengaruh Waktu, Daya Dukung, Faktor Peningkatan (∆10).
Prediksi Penurunan Segera Fondasi Tiang di Wilayah Pekanbaru Berdasarkan Data Sondir Agus Ika Putra; Soewignjo Agus Nugroho; Muhammad Muhshi
Siklus : Jurnal Teknik Sipil Vol. 8 No. 1 (2022)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/siklus.v8i1.8985

Abstract

Pesatnya perkembangan Kota Pekanbaru, sebagai Ibukota Provinsi Riau, mengakibatkan permintaan Ijin Mendirikan Bangunan (IMB) untuk gedung bertingkat sangat tinggi. Peningkatan pembangunan Konstruksi Sipil dengan beban besar, bisa mengakibatkan penurunan tanah. Sebagian besar lapisan tanah di wilayah Pekanbaru terdiri dari tanah Gambut, lempung dan pasir. Jenis fondasi yang cocok untuk tanah di Pekanbaru adalah fondasi dalam (driven/bored pile). Perencanaan fondasi dalam umumnya menggunakan data properties tanah dan data pengujian lapangan. Data penyelidikan tanah yang populer untuk perencanaan fondasi dalam adalah Dutch Cone Penetration Test (DCPT) dan Standard Penetration Test (SPT) Pengujian DCPT juga sering disebut Sondir, yaitu alat uji terdiri dari kerucut penetrasi (qonus) untuk membaca tahanan ujung tiang dan Shaft resistance untuk menghitung tahanan kulit. Penelitian ini bertujuan untuk memperkirakan penurunan segera (intermediate settlement) fondasi tiang pada saat konstruksi dibangun. Artinya beban yang diterima tiap tiang tidak melebihi daya dukung tiang tunggal dengan faktor keamanan tertentu (SF=3). Data uji sondir berasal dari Laboratorium Mekanika Tanah Universitas Riau. Perhitungan penurunan daya dukung tiang dilakukan dengan diameter tiang 30 cm dan panjang tiang 6 m, 12 m, dan 18 m. Hasil perhitungan ditampilkan dalam bentuk peta penurunan untuk wilayah Pekanbaru.
PENERAPAN AERATOR JENIS KINCIR UNTUK KEBERLANJUTAN SUPLAI OKSIGEN TERLARUT PADA PERTANIAN TAMBAK UDANG [PENERAPAN AERATOR JENIS KINCIR UNTUK KEBERLANJUTAN SUPLAI OKSIGEN TERLARUT PADA PERTANIAN TAMBAK UDANG [IMPLEMENTATION OF TURBINE TYPE AERATOR FOR SUSTAINABLE SUPPLY OF DISSOLVED OXYGEN FOR SHRIMP FARMING] Iswadi Hasyim Rosma; Azriyenni Azhari Zakri; Abdul Gafar Arsaf; Feblil Huda; Agus Ika Putra
Jurnal Sinergitas PKM & CSR Vol 5, No 1 (2021): April
Publisher : Universitas Pelita Harapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19166/jspc.v5i1.1759

Abstract

An aerator is a device that utilized to produce dissolved oxygen in water through a diffusion process. Generally, the aerators employed by farmers are operated manually by an operator. The design and utilization of a smart device such as the Zelio Smart Relay is one of the objectives of this article. With the use of smart relays, it is expected that the presence of operator can be eliminated and able to reduce operational cost. The type of aerator discussed in this article is a dual turbine aerator. Each turbine has 6 blades. In order to have the smart relay to operate properly, at least 2 (two) sensors are needed as inputs, namely the light intensity and the temperature sensor. Furthermore, dissolved oxygen levels in water are categorized as high (30 mg / L) if the light intensity is higher than 100,000 lux and the temperature lower than 350 C. It shows in the results that the implementation of aerator has the capabilty to increase dissolved oxygen from 8 mg / L - 14.4 mg / L in 45 minutes, therefore the quantity and the quality of dissolved oxygen required by shrimp farming can be fulfilled properly.BAHASA INDONESIA ABSTRACT: Aerator adalah salah satu alat bantu yang berfungsi untuk memproduksi oksigen terlarut dalam air melalui proses difusi. Sampai saat ini, aerator yang dimanfaatkan oleh para petani pada umumnya masih bersifat manual dengan cara dioperasikan dan dikendalikan oleh tanaga operator (manusia). Perancangan dan pemanfaatan teknologi cerdas seperti Zelio Smart Relay merupakan salah satu bahasan pada artikel ini. Dengan adanya pemanfaatan smart relay tersebut diharapkan pekerjaan operator pada pertanian tambak udang dapat dipermudah dan mampu menekan biaya operasional. Jenis aerator yang dibahas pada artikel ini adalah aerator turbine ganda yang memiliki 6 buah sudu di tiap tiap kincirnya. Agar sistem kendali yang dirancang pada smart relay beroperasi dengan baik, maka diperlukan sedikitnya 2 (dua) buah sensor yaitu sensor intensitas cahaya dan sensor suhu yang terukur pada kolam (air). Selanjutnya kadar oksigen terlarut dalam air dikategorikan tinggi (30 mg/L) apabila intensitas cahaya > 100.000 lux dan untuk suhu < 350 C. Dari hasil penerapan aerator di kolam dapat diketahui bahwa aerator dengan penambahan Zelio Smart Relay ini dapat bekerja sesuai dengan perancangan, yaitu dapat meningkatkan oksigen terlarut dari 8 mg/L – 14.4 mg/L dalam 45 menit, dengan demikian kuantitas oksigen terlarut yang dibutuhkan oleh pertanian udang dapat dipenuhi dengan baik. 
PEMETAAN PENURUNAN ELASTIS FONDASI TIANG BERDASARKAN DATA SONDIR KOTA PEKANBARU Muhammad Muhshi muhshin; Agus Ika Putra
Indonesian Journal Of Civil Engineering Education Vol 6, No 1 (2020): Indonesian Journal of Civil Engineering Education
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/ijcee.v6i1.53689

Abstract

Pekanbaru City has developed quite rapidly. Therefore, local governments are aware of thehigh demand for multi-story building construction, so that buildings built with more than two floorsare required to conduct a land subsidence test. The load of a structure will be transmitted by thefoundation to the ground, where the soil is expected to be able to support the load. The soil subsidencetest is obtained from the sondir test data or also called the Dutch Cone Penetration Test (DCPT)which is used to determine the profile into the soil continuously with the value of cone tip resistanceand blanket resistance (Wafi et al., 2013).The purpose of this study is to analyze the calculation ofthe settlement of a single pile foundation based on the foundation bearing capacity data from thesondir data obtained from the Riau University Laboratory using the elastic settlement method. Theresearch stages carried out are reviewing theories related to piles, then collecting data includingdata on the carrying capacity of the foundation and sondir data. The final stage is conductingcalculation analysis. The results of this study obtained a map of the elastic settlement of the pilefoundation at a depth of 6 meters, 12 meters and 18 meters
Perbaikan Tanah Lempung Dengan Metode Kolom Konfigurasi Segitiga dari Campuran Fly Ash dan Bottom Ash Rafiki Aziz; Muhardi Muhardi; Agus Ika Putra
SAINSTEK Vol. 10 No. 1 (2022)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/js.v10i1.7

Abstract

Kondisi tanah di provinsi Riau adalah tanah lunak berupa lempung, lanau dan gambut. Tanah lunak umumnya memiliki daya dukung yang rendah dan kompresibilitas yang tinggi. Penggunaan stone column adalah salah satu metode perbaikan tanah yang dapat dilakukan. Penelitian terdahulu menunjukkan pemberian lapisan timbunan pasir di atas stone column dapat memperbaiki kriteria kegagalan bulge kolom dan berkontribusi memberikan perkuatan dan mengurangi beban yang diterima oleh kolom pada bagian atas ataupun dasar. Pada penelitian ini material kolom diganti dengan campuran fly ash dan bottom ash, dan rasio panjang kolom serta tinggi lapisan timbunan pasir divariasikan. Perbandingan fly ash dan bottom ash yang digunakan 40% fly ash + 60% bottom ash. Rasio panjang kolom terhadap diameternya (L/D) yang digunakan adalah 2, 3 dan 4 dengan diameter kolom 5 cm. Tinggi lapisan timbunan pasir divariasikan 2 dan 4 cm. Kolom-kolom dipasang dengan pola segitiga. Tanah lempung asli tanpa perkuatan dan dengan perkuatan kolom dibebani menggunakan hydraulic jack dan dilihat peningkatan daya dukung serta reduksi penurunan yang terjadi. Hasil uji pembebanan menunjukkan semakin besar rasio panjang kolom dan tebal lapisan timbunan pasir maka daya dukung tanah dan reduksi penurunan tanah akan semakin meningkat. Daya dukung dan reduksi penurunan maksimum diberikan oleh kolom L/D 4 dan tinggi lapisan timbunan pasir 4 cm dengan rasio peningkatan daya dukung sebesar 1,74 atau naik sekitar 74% dan rasio reduksi penurunan hingga 0,30 atau berkurang sekitar 70%. Hasil analisis teoritis menunjukkan kecenderungan yang berbeda.
The Effect of WHA and Lime for Shear Strength of Clay Stabilized by Cement Nugroho, Soewignjo Agus; Ongko, Andarsin; Fatnanta, Ferry; Putra, Agus Ika
Jurnal Teknik Sipil dan Perencanaan Vol 24, No 1 (2022)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jtsp.v24i1.34380

Abstract

With the use of the additive, the clay's shear strength and bearing capacity increased. Usage waste material, Wooden Hush Ash (WHA), is tiny. The silicate content of WHA is almost the same as RHA. This study aims to utilize ASK for a stabilization material of high plasticity clay to increase shear strength. Unconfined Compression Strength (UCS) tests were performed to compare the UCS value of clay; clay with 5% cement; clay with lime; clay-cement with WHA; clay-cement with lime and WHA; and clay with lime and WHA. Before the UCS test, the sample was separated into two groups: with and without curing for 28 days, and with and without soaking for 4 days. While in conditions unsoaked, the qu value is uniform. Results show, without curing and soaked, qu values of all variations have the same value in the range of 350 kPa to 380 kPa. In conditions with curing 28 days with and without soaked, qu values range from 365 kPa to 485 kPa for mixtures with WHA and a combination of lime with ASK. While adding of 10% lime additive increases the qu value to 1100 kPa UCS testing results prove, with and without curing and soaked, lime is more optimal to increase the value of UCS than WHA. Replacement lime with WHA by 4% to 6% increases the qu value from 160 kPa to 465 kPa and 485 kPa and 110 kPa to 440 kPa to 475 kPa of soaked and unsoaked condition respectively. WHA can be used to reduce lime in soil stabilization.
Co-Authors Abdul Gafar Arsaf Agus Nugroho, Soewignjo Ahmad Jamaan Ali, Nurhalim Dani Amir Hamzah Annisa Soraya Hasibuan Ari Sandhyavitri Arisman Adnan Azriyenni Azhari Zakri Bahrul Junaidi Cici Amelia Hilman Enno Yuniarto Erik Azarya Ginting Fajar Restuhadi Feblil Huda Febrizal Ujang Feranita Abdul jalil Ferry Fatnanta Fikri Ananda Fitri Herawati Gunawan Wibisono Gunawan Wibisono Hasibuan, Putra S Hidayatul Catra Burhan Hifzil Hanif Irvan Arisma Iskandar Romey Sitompul K Khairat Leo Santosa Leo Santosa, Leo Leo Sentosa Marpaung, Horas Mohammad Saeri Mufriadi . Mufriadi ., Mufriadi Muhamad Yusa Muhammad Muhshi Muhammad Muhshi muhshin Muhardi Oki Chandra Ongko, Andarsin Putra Hasibuan Rafiki Aziz Ridho Ilahi Rinaldi Rinaldi Rosma, Iswadi Hasyim Rugun Ermina S A Nugroho S. Siswanto Satibi, Syawal Soewignjo Agus Nugroho Sri Djuniati Suwitno Suwitno, Suwitno Syamsu Herman T. Gina Vinola Zega, Christian Robert