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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Teknik Sipil Cendekia (JTSC)
Wijaya, Nehemia
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Civil Engineering, Building, Construction & Architecture

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Uji CBR (California Bearing Ratio) pada Tanah Lempung Stabilisasi Abu Marmer dan Biogrouting Waruwu, Aazokhi; Pangemanan, Indah; Yunita, Yulia; Calvin, Fransiscus; Lujaya, Jason; Wijaya, Nehemia
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1 (2024)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i1.58304

Abstract

Tanah dasar yang ada untuk konstruksi jalan cukup beragam, ada kalanya tidak memenuhi standar sebagai tanah dasar konstruksi. Upaya perbaikan diperlukan apabila tanah yang ada memiliki nilai CBR (California Bearing Ratio) yang cukup rendah. Bahan stabilisasi untuk perbaikan tanah dapat menggunakan limbah berupa abu marmer dan sebagai pembanding dalam penelitian ini juga dilakukan perbaikan dengan metode biogrouting. Tujuan penelitian ini adalah untuk mendapatkan pengaruh stabilisasi abu marmer dan biogrouting terhadap nilai CBR. Penelitian dilakukan melalui uji CBR pada model fisik tanah yang distabilisasi 3-6% abu marmer dan tanah dengan perbaikan menggunakan bakteri bacillus subtilis dan bacillus amyloliquefaciens. Pengujian dibedakan berdasarkan tebal tanah stabilisasi 10-30 cm. Hasil penelitian menunjukkan bahwa tanah stabilisasi abu marmer menghasilkan peningkatan nilai CBR yang lebih baik dibandingkan tanah yang diperbaiki dengan metode biogrouting. Nilai CBR yang memenuhi standar untuk tanah dasar konstruksi jalan didapatkan pada tanah dengan stabilisasi 6% abu marmer dengan tebal lapisan tanah stabilisasi minimum 20 cm.
Effect Of Earthquake Forces On Columns With Different Strengthening Using Sap2000 Software Purba, Sadvent; Wijaya, Nehemia
JURNAL TEKNIK SIPIL CENDEKIA (JTSC) Vol 6 No 1 (2025): February
Publisher : Departement of Civil Engineering, Universitas Winaya Mukti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51988/jtsc.v6i1.268

Abstract

Indonesia is an area that has quite a high frequency and strength of earthquakes because it is at the meeting point of four tectonic plates, namely the Eurasian plate, the Indo-Australian plate, the Pacific plate and the Philippine Sea plate. Earthquake-resistant buildings are an alternative to minimize the impact of earthquake forces that occur. One design that needs to be analyzed is that there are openings in the building wall structure that cause the columns not to bend properly when receiving lateral forces, so they have the potential to fail. A collapsing column will cause the load of the building floor above it to collapse. Through this research, the influence of the frequency of earthquake forces, the influence of earthquake forces on the deviation between floors, and the location of the collapse in building models A (without walls) and B (with walls) will be identified. The method used is dynamic load analysis in SAP2000 based on spectrum response. Based on the results of the SAP2000 analysis, it can be seen that the deviation value between floors is smaller in building model B (with walls), thus indicating short column with lower heights absorb more energy and have stiffer properties. The location of the collapse is not visible in the SAP2000 analysis, but the largest deformation occurs in the beam for both building models.
Co-Authors Aazokhi Waruwu Calvin, Fransiscus Lujaya, Jason Pangemanan, Indah Purba, Sadvent Yunita, Yulia