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Fitro Darwis
Universitas Pasifik Morotai
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Journal : Journal of Science and Engineering

 1 
VARIASI PENGGUNAAN PASIR BESI PADA CAMPURAN MORTAR Fitro Darwis; Mufti Amir Sultan; Demi Sidogu
Journal of Science and Engineering Vol 1, No 1 (2018): Journal Of Science and Enggineering (JOSAE)
Publisher : Fakultas Teknik Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (422.226 KB) | DOI: 10.33387/josae.v1i1.756

Abstract

Iron sand is a natural resource that many found in North Maluku one of them in Yao Village District Morotai Island. Iron sand mining results have the potential to become an Indonesian commodity but iron sand processing is still not maximized at this time. The purpose of this research is to know whether the sand of Yao Village including iron sand, To know the effect of iron sand usage as fine aggregate on the mortar mixture against compressive strength and against absorption. In this research, the test of compressive strength and mortar absorption. This research uses fine aggregate substitution material is Yao Village sand. Preparation of specimen with Fas 0,40, Yao Village sand composition as substitution of fine aggregate that is 0%, 20%, 40%, 60%, 80% and 100% to the fine aggregate weight. The composition of Sand Yao Village after the most dominant purification was Fe (75.84%) of the total iron ore content, followed by Si, Ti, Ca, Al, and other minor elements, so it was classified as an iron sand. There is a decrease in compressive strength along with the increase of iron sand composition 0%, 20%, 40%, 60%, 80% and 100%. Large decreases in compressive strength of each s 19.20 MPa, 19.00 MPa, 18.60 MPa, 13.00 MPa, 13.00 MPa and 12.36 MPa. absorption of mortar in 20% iron sand substitution and 40% of absorption increased, at 60% composition decreased.
ANALISIS DAYA DUKUNG TANAH DASAR BERDASARKAN UJI CBR LABORATORIUM DAN UJI CBR LAPANGAN PADA RUAS JALAN KAMPUS UNIPAS MOROTAI Fitro Darwis; Elfira Resti Mulya
Journal of Science and Engineering Vol 4, No 2 (2021): Journal Of Science And Engineering (JOSAE)
Publisher : Fakultas Teknik Universitas Khairun

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Abstract

Pembangunan sarana transportasi darat dalam hal ini jalan raya di Kabupaten Pulau Morotai saat ini sudah sangat pesat. Salah satu ruas jalan yang direncanakan untuk pembangunan jalan baru yaitu Ruas Jalan Kampus Unipas Morotai. Sejauh ini pembangunan jalan baru di Kabupaten Pulau Morotai dalam perencanaannya belum secara maksimal dilakukan survey untuk menguji kondisi tanah dasar maupun kekuatan tanah dasarnya. Tujuan penelitian ini adalah untuk mengetahui daya dukung tanah dasar (subgrade) untuk keperluan perencanaan tebal perkerasan jalan di ruas jalan kampus Unipas Morotai melalui pengujian secara langsung di lapangan dengan pengujian laboratorium.Hasil penelitian menunjukkan bahwa jenis tanah pada 3 titik lokasi pengambilan sampel termasuk jenis Tanah Lempung dengan kadar air lapangan tinggi antara 30-35%. Nilai CBR laboratorium pada titik 01 sebesar 33%, titik 2 sebesar 28% dan titik 3 sebesar 49%. Hasil ini menunjukan bahwa dari hasil pengujian lab, tanah dasar memnuhi syarat sebagai subgrade pada perkerasan jalan dimana CBR >5%. Nilai CBR lapangan yang diuji pada titik 6 titik pengujian memberikan nilai yang variatif  sebesar 4,64%-6,96% Hasil ini menunjukan bahwa dari hasil pengujian lab, tanah dasar memnuhi syarat sebagai subgrade pada perkerasan jalan dimana CBR >5% pada titik 01, dan titik 04. Sedangkan pada 4 titik lainnya tidak memenuhi nilai CBR nya sehingga diperlukan pemadatan khusus dilpangan.
ANALISIS DAYA DUKUNG TANAH DASAR BERDASARKAN UJI CBR LABORATORIUM DAN UJI CBR LAPANGAN PADA RUAS JALAN KAMPUS UNIPAS MOROTAI Fitro Darwis; Elfira Resti Mulya
Journal of Science and Engineering Vol 5, No 1 (2022): Journal Of Science And Engineering (JOSAE)
Publisher : Fakultas Teknik Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/josae.v5i1.2752

Abstract

The development of land transportation, in this case the highway in Morotai Island Regency, is currently very fast. One of the roads planned for the construction of a new road is the Unipas Morotai Campus Road Section. So far, the construction of new roads in Morotai Island Regency has not been optimally carried out by a survey to test the condition of the subgrade and the strength of the base soil. The purpose of this study was to determine the carrying capacity of the subgrade for the purpose of planning pavement thickness on the Unipas Morotai campus road through direct field testing with laboratory testing. The results showed that the soil types in the 3 sampling locations were loamy soils with high water content in the field between 30-35%. The laboratory CBR value at point 01 is 33%, point 2 is 28% and point 3 is 49%. These results indicate that from the results of laboratory testing, subgrade fulfills the requirements as a subgrade on road pavement where CBR> 5%. The CBR value of the field tested at point 6 test points gave a varied value of 4.64% -6.96%. These results indicate that from the lab test results, subgrade fulfills the requirements as a subgrade on the pavement where CBR> 5% at point 01 , and point 04. Meanwhile, the other 4 points did not meet their CBR values so that special compaction was needed in the field.. 
Co-Authors Aminullah Thaib Amir Sultan, Mufti Anggriyawan Djafar Arbain Tata Aswin Laaha Bambang Hariyanto Chairul Anwar Chairul Anwar Demi Sidogu Elfira Resti Mulya Embe Seng Hartati Kapita Idrus, Sukarmin Ikbal, Mardiana Kusman, Muhammad Reza Kusnadi M Asril Bakir Maujud Popa Miswar Papuangan Mufti Amir Sultan, Mufti Amir Muhammad Haykal Muhammad Reza Kusman Siti Hadija Goraahe Sofyan Djafar Suparman Utokoy Titien Sofiati Walid Mododok