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ANALISIS KAPASITAS SUNGAI DELI DALAM RANGKA PENANGGULANGAN BANJIR Simanjuntak, Indi Rezki Uli; Sihombing, Tera Melya Patrice; Yuliyanto, Andry; Sitepu, Arif Rahman Hakim; Zhafira, Elian; P, Kirtinanda; Sinuraya, William Zones
JURNAL TEKNIK SIPIL Vol 13, No 1 (2024): Volume 13 Nomor 1 Mei 2024
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jts.v13i1.36669

Abstract

Sungai Deli terletak di Kabupaten Karo dengan daerah aliran sungai seluas 472 km2 dan panjang 72km, mengalir melintasi Kota Medan Selat Malaka. Sungai Deli mengalami penyempitan atau pendangkalan sehingga menyebabkan kapasitas debit Sungai Deli tidak bisa menampung besarnya debit banjir yang diterima. Tujuan penelitian adalah menganalisis Sungai Deli untuk pegendalian banjir, meliputi analisis hidrologi dengan berbagai metode probabilitas frekuensi, perencanaan debit banjir menggunakan HSS ITB-1 dan HSS Gamma-1.Pada analisis hidraulika menggunakan bantuan software HEC-RAS (Hydrolic Engineering Center River Analysis System) 6.1 dilakukan dari bagian hulu sungai hingga titik outlet banjir, dengan wilayah tangkapan air (catcment area) memiliki luas sekitar 250.01 km2 sepanjang 45km. Hasilnya, kapasitas sungai hanya dapat mengurangi debit banjir sekitar 10%, dengan waktu puncak aliran antara 4 hingga 5 jam. Pada penelitian ini, solusi yang diambil adalah membangun parapet atau tembok penggendali banjir. Tinggi jagaan atau freeboard pada pemodelan ini adalah 0.5 hingga 1meter (maksimum).
EVALUASI EMISI GAS RUMAH KACA WARM MIX ASPHALT METODE LIFE CYCLE ASSESSMENT Yuliyanto, Andry; Rio Prayogi, Galih; Syahputra, Deny; P, Kirtinanda; Kurniawan, Ade Candra
Jurnal Jalan Jembatan Vol 42 No 2 (2025)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58499/jatan.v42i2.1340

Abstract

The Lampung Provincial Road and Construction Agency reported in 2022 that approximately 391.985 km or 23.05% of road infrastructure was damaged. The use of hot mix asphalt (HMA) for road repairs requires high production temperatures, resulting in increased energy consumption, fuel costs, and GHG emissions. Therefore, the environmental impact of road paving should not be ignored. Additives are added to the mixture to lower the mixing temperature, resulting in a mixture known as warm mix asphalt (WMA). In analyzing the potential for environmental impact savings, LCA was used. Inventory data was obtained from previous research literature studies. LCA was conducted based on a gate-to-gate approach that only covered the mixing process at the asphalt mixing plant (AMP). This study aims to determine the potential for energy reduction, fuel consumption savings, GHG reduction, and total cost savings in the alternative use of WMA in provincial road repairs in Lampung Province. Five types of WMA alternatives were considered, namely WMA with Asphamin, Advera, LEA, Sasobit, and Asphaltan additives. The results of the study show that WMA can reduce the mixing temperature and provide energy savings of between 3.15% and 13.65%. From an environmental perspective, WMA also reduces GHG emissions, with a reduction potential of up to 5.00 kgCO₂ per ton of mixture, equivalent to 13.22% compared to HMA. Economically, the use of WMA provides potential production cost savings ranging from 3.05% to 13.22%. Among the five types of additives tested (Asphamin, Advera, LEA, Sasobit, and Asphaltan), the LEA additive proved to be the most environmentally friendly alternative while also providing the greatest energy and cost savings. Kata Kunci: Life Cycle Assessment, Warm Mix Asphalt, Gas Rumah Kaca, Efisiensi Energi. Keywords: Life Cycle Assessment, Warm Mix Asphalt, Greenhouse Gases, Energy Efficiency