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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Dimensi Pratama Teknik Sipil Jurnal Infra Rekayasa Sipil Civil Engineering Dimension Dimensi Utama Teknik Sipil Jurnal Pengabdian Masyarakat Bangsa

Daniel Tjandra

Dosen Program Studi Teknik Sipil Universitas Kristen Petra

Author-ID : 404159

Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Energy Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences

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PENGARUH ELEKTROKINETIK TERHADAP DAYA DUKUNG PONDASI TIANG DI LEMPUNG MARINA Daniel Tjandra; Paravita Sri Wulandari
Civil Engineering Dimension Vol. 8 No. 1 (2006): MARCH 2006
Publisher : Institute of Research and Community Outreach - Petra Christian University

Electrokinetics is one of soft ground improvement methods to improve its bearing capacity. The objective of this research is to investigate the increase of friction and end bearing resistance of an embedded instrumented model pile in marine clay after electrokinetics treatment. The initial geotechnical properties of soil surrounding the pile foundation is obtained by several soil laboratory tests. For pile bearing capacity analysis, friction and end bearing resistance of pile was measured by load cell measuring device, while un-drained shear strength analysis was measured by vane shear test. The result of this research showed that after 24 hours electrokinetics treatment, the un-drained shear strength increased closer to the pile, and the bearing capacity of pile increased 14 times. Abstract in Bahasa Indonesia : Elektrokinetik adalah salah satu metode perbaikan tanah lunak yang diaplikasikan untuk meningkatkan daya dukung tanah lunak. Tujuan dari penelitian ini adalah untuk menyelidiki peningkatan tahanan friksi dan ujung suatu model pondasi tiang di lempung marina setelah dilakukan proses elektrokinetik. Karakteristik tanah pada kondisi mula-mula di sekitar pondasi tiang didapatkan dari beberapa pengujian di laboratorium. Untuk analisa daya dukung tiang, tahanan friksi dan ujung dari pondasi tiang diukur dengan alat pengukur load cell, sedangkan analisa kuat geser undrained diukur dengan pengujian baling-baling. Hasil penelitian menunjukkan bahwa setelah pada tanah dilakukan proses elektrokinetik selama 24 jam, daya dukung dari pondasi tiang meningkat 14 kali dan semakin dekat dengan tiang, kuat geser undrained juga semakin meningkat.

IMPROVING MARINE CLAYS WITH ELECTROKINETICS METHOD Daniel Tjandra; Paravita Sri Wulandari
Civil Engineering Dimension Vol. 9 No. 2 (2007): SEPTEMBER 2007
Publisher : Institute of Research and Community Outreach - Petra Christian University

The high water content in marine clays could loosen the bond of soil particles, resulting in low bearing capacity and high compressibility of the soil. Excessive settlements could happened to the structures built on it. An electrokinetic process was attempted to reduce the high water content of the marine clay. An experimental study was conducted to evaluate the effect of electrokinetic on marine clay improvement. This study focused on the use of electrokinetic to enhance the soil bearing capacity of marine clay by improving index properties of the marine clay. The result of this research was obtained by doing several analyses on water content, pH value, and soil particles of soil sample located between cathode and anode. Based on the results from laboratory testing, it can be concluded that electrokinetic process decreased the water content and pH value of soil surrounding the anode. Also, soil particles surrounding the anode became in close proximity. This indicated that as it became closer to the anode, soil became denser.

Study on Graphite Powder as Conductive Pigments for Impressed Current Cathodic Protection System using Carbon Fiber Reinforced Polymer Anode Gunawan Budi Wijaya; David Pratama Lays; Hongky Haodiwidjaya Tanto; Daniel Tjandra
Civil Engineering Dimension Vol. 21 No. 2 (2019): SEPTEMBER 2019
Publisher : Institute of Research and Community Outreach - Petra Christian University

The use of Carbon Fiber Reinforced Polymer (CFRP), for both strengthening material and anode for Impressed Current Cathodic Protection (ICCP) system, is being investigated. The focus of this study is to develop the epoxy that has good bond strength and electrical conductivity. Graphite powder is used as conductive pigments with percentage ranges from 7.5% to 17.5%. All specimens were partially submerged in 5% NaCl solution and induced with electrical current of 10 mA/m2 and 20 mA/m2 for 30 days. An average potential increase of 200 mV was recorded using half cell potential test. The application of 30 days ICCP up to current density of 20 mA/m2 did not affect the bond strength significantly and still complies with ACI recommendation. However, graphite content of more than 15% are found to be not workable and the bond strength is greatly reduced to less than 1 MPa This study concluded that the recommended graphite powder content shall be in the range of 10% to 15%.

Co-Authors Achmadi Achmadi Agnes - Elena Agustinus Noertjahyana Alexander William Arnold Yapeter Arnold Yapeter, Arnold Billy Christian Johan Calvin - Limantoro Celine Michaella Sutjiadi Christien Halim Christopher Henry Sugiarto Christopher Henry Sugiarto Daniel - Lewa Darwin Hughie David Christian David Pratama Lays David Pratama Lays David Tanujaya David Tanujaya, David Elizabeth Yolanda Fiona Swasti Adi Fiona Swasti Adi Gogot Setyo Budi Gogot Setyo Budi Grace Christiani Linggadiharja Gunawan Budi Wijaya Gunawan Budi Wijaya Gunawan Budi Wijaya Handoko - Sugiharto Handoko Sugiharto Harvey Ramses Panjaitan Haryanto, Andre Yongsin Hendry Indra Pramana Hendry Indra Pramana Hongky Haodiwidjaya Tanto Hongky Haodiwidjaya Tanto Jessica Agustine Widjaja Joedy Harto P Johanes - Suwono Johanes I. Suwono Johanes I. Suwono, Johanes I. Johanes Indrojono Suwono Johanes Indrojono Suwono Johanes Suwono Johanes Suwono Jondry Lawono Joseph Richard Joshua - Alexander Kennedy Kennedy Kevin Elmerson Hidayat Kevin Hartanto Wijaya Kevin Jonathan Santoso Kevin Kevin Lydia Loahardjo Lydia Loahardjo Michael Henry G Nathaniel Evan Wijaya Oentardjo, Yohanes Paravita Sri Wulandari Paravita Sri Wulandari Pretty Angelina Tay Pretty Angelina Tay Resmana Lim Reynaldi - Sedjie Ricky Ivan Wiyanto Roberto Siswanto Goni Roberto Siswanto Goni Rospala Hanisah Yukti Sari Safrudin I, Muhammad Yudha Sally Sally Samuel Eric Sentosa - Purnomo Stefanus Brian Juan Nday Tika - Harsono Vedi Wihono Susilo William Putera Suryanto William, Alexander Yohanes Febrian Onggara Yohanes Oentardjo

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