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All Journal Jurnal Teknik Sipil Media Ilmiah Teknik Sipil Jurnal GeoEkonomi Abdimas Universal Jurnal Ilmiah Teknik Sipil Transukma
Gunaedy Utomo
Universitas Balikpapan
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Law, Crime, Criminology & Criminal Justice Social Sciences

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Journal : Media Ilmiah Teknik Sipil

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Evaluasi Pelaksanaan Proyek Drainase Dengan Metode CPM Dan PERT Gunaedy Utomo; Irna Hendriyani; Siti Nor Aida
Media Ilmiah Teknik Sipil Vol 9 No 1 (2020): Media Ilmiah Teknik Sipil
Publisher : ​Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/mits.v9i1.1884

Abstract

This research purposes to evaluate the implementation of the drainage project in Jl. Mulawarman, Gg. Arjuna, Sepinggan. This research uses the CPM (Critical Path Method) and the PERT (Project Evaluation and Review Technique). Based on the budget plan, time schedule, weekly report, documentation and interview found that the result of the CPM with two critical paths are work activities. The first critical path are: Activity A (Mobilization and Demobilization), Activity C (Landfilling activity), Activity F (Concrete works K-175, Ready Mix). The second critical path are: Activity A (Mobilization and Demobilization), Activity E (Begisting work for black channels), and Activity G (Plain U24 Concrete Iron Works). Meanwhile, the result of PERT has 49% chance to be completed with the project duration of 18 weeks.
Pengaruh Kultur Bakteri Pada Proses Biosementasi Tanah Laterit Terhadap Nilai CBR: The Influence Of Bacterial Culture On The Soil Laterite Biosementation Process On CBR Value Andi Marini Indriani; Gunaedy Utomo; Nurul Fitriyani
Media Ilmiah Teknik Sipil Vol. 11 No. 2 (2023): Media Ilmiah Teknik Sipil
Publisher : ​Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/mits.v11i2.4590

Abstract

Lateritic soils have a high rate of weathering and non-uniform shrinkage. So this land is not good for construction work. Biocementation is a method of soil improvement by using the ability of bacteria that have lived in the soil to do the MCIP (Microbial-induced Calcite Precipitation) process which is obtained from the bacterium Bacillus Subtilis. This biocementation stabilization can increase the strength of the soil by adding Bacillus Subtilis bacteria as an additive to stabilize the soil. The test was carried out to determine changes in the mechanical properties of CBR Laboratory soil, by mixing 3% bacteria into the soil to be stabilized. The results of testing the CBR value of the Soaked Laboratory with one day of culture increased 4.8-fold at the 28-day curing period and increasing the CBR value of the Soaked Laboratory of three-day culture increased up to 4.9 times the CBR value before stabilization, which was 19.5%. The results of the study with stabilization using bacteria variation of 3% one-day culture increased up to 95% and increased up to 96% in three-day culture. So that it can be used as a soil material for road foundations in class B.
Co-Authors Agus Sugianto Agus Sugianto Amanda Syasya Billah Andi Marini Indriani, Andi Marini Eka Al Qurina Hamriani Ryka Irna Hendriyani Lukman M. Nur Fadhillah Muhammad Rizqy Nuruddin Kafy El Ridlo Nurul Fitriyani Olivia Octafiani Rahmat Rahmat Rahmat Siti Nor Aida Sulardi .