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Pengaruh Campuran Limbah Tempered Glass dan Limbah Ampas Tebu Untuk Pembuatan Beton Mutu Tinggi Ariyanti, Titi; Saputra, Andy Eka; Agustina, Resti
TEKNIKA SAINS Vol 9, No 1 (2024): TEKNIKA SAINS
Publisher : Universitas Sang Bumi Ruwa Jurai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24967/teksis.v9i1.2782

Abstract

Meningkatnya keperluan material beton menggunakan bahan-bahan dari alam seperti batuan alam dapat mengakibatkan eksploitasi sumber daya alam yang dapat mengganggu lingkungan. Perlu adanya inovasi bahan pembuat beton dengan menggunakan limbah tempered glass dari mobil bekas/rusak dan limbah ampas tebu dalam implementasi pembuatan beton. Penelitian ini bertujuan untuk mengetahui mix desain beton dengan bahan tambah limbah tempered glass dan limbah ampas tebu, mengetahui kuat tekan beton serta efisiensi penggunaan limbah tempered glass dan limbah ampas tebu sebagai bahan tambah agregat halus. Sampel beton dibuat sebanyak 6 buah benda uji dengan cetakan silinder dengan ukuran diameter 10 cm dan tinggi 20 cm. Dari hasil penelitian diperoleh jumlah material untuk mix design campuran beton per m3 dengan persentase ampas tebu sebesar 3 persen dari berat semen dan tempered glass sebesar 15 persen dari berat pasir yaitu air sebesar 206,4512 liter, semen sebesar 870,682 kg, pasir sebesar 288,9575 kg, agregat kasar sebesar 963,36 kg, abu ampas tebu sebesar 26,9283 kg, serbuk kaca tempered glass sebesar 50,9925 kg dan superplasticizer sebesar 7,1808 kg. Nilai kuat tekan beton untuk benda uji umur 7 hari diperoleh nilai rata-rata sebesar 17,495 MPa, dan untuk benda uji 28 hari diperoleh nilai rata-rata sebesar 30,276 MPa. Dapat disimpulkan bahwa penggunaan limbah tempered glass dan limbah ampas tebu dalam campuran beton tidak dapat digunakan untuk beton mutu tinggi, penggunaan limbah tersebut dapat digunakan untuk beton mutu rendah.
Climate Control Efforts that Impact Flood Disasters in the Lampung Saputra, Andy Eka; Suprapto, Suprapto; Raharjo, Ismadi
ABEC Indonesia Vol. 12 (2024): 12th Applied Business and Engineering Conference
Publisher : Politeknik Negeri Bengkalis

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The imbalance between the current availability of water resources and the need for water is an important problem in almost all regions in Indonesia, so that it requires a conception of the engineering and operation of existing facilities. control and utilization of water as well as management carried out efficiently and effectively in order to meet various needs. As an effort to avoid conflicts of interest, an engineering management of dam operations is needed. This raises the idea of ​​the need for water management engineering existing reservoirs. Based on reservoir water inflow and outflow data from 2019 to 2022, optimization was carried out on the Minimum Demand Analysis (Firm Yield Analysis) and Maximum Analysis of Reservoir Water Release using the Non-Linear Generalized Reduced Gradient (GRG) Method. Inflow and outflow data iterations as a function of objectives and constraints Minimize Reservoir Capacity and Amount of water storage in the reservoir = Inflow, and demand at the Way Sekampung Dam = Outflow obtained by Firm Yield Analysis of 335.62 Million M3 or 335 MCM. Thus, it can be concluded that the effective storage volume that can be allocated for irrigation is located between the minimum reservoir elevation at +250 m and the maximum elevation at +255 m. The results of the volume interpolation of the optimization results obtained with an elevation elevation of + 253.74 m, as well as the optimization results for the total release of reservoir water at 281 MCM, so that the management of water resources can then become a benchmark in the distribution of irrigation water, raw water, hydropower and water conservation. continuously
Perencanaan Desain Tebal Perkerasan Jalan Lentur (Flexible Pavement) Untuk Mendukung Tingkat Pelayanan Jalan di Kampus Politeknik Negeri Lampung Ariyanti, Titi; Wisman, Mira; Agustina, Resti; Saputra, Andy Eka; Amalia, Rahayu Putri
BRILIANT: Jurnal Riset dan Konseptual Vol 11 No 1 (2026): Volume 11 Nomor 1, Februari 2026
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v11i1.2389

Abstract

The availability of reliable road infrastructure is an important factor in supporting transportation and mobility activities in educational areas. Campus roads as supporting infrastructure for academic activities are required to be able to provide an optimal level of service along with the increasing volume and traffic load. The increase in traffic load on the campus roads of the Politeknik Negeri Lampung has not been balanced by adequate road infrastructure conditions. Therefore, this study aims to conduct a case study of flexible pavement thickness design planning to support the improvement of road service levels on the Politeknik Negeri Lampung. This study was conducted on the Main Road of the Lampung State Polytechnic with the survey being carried out from Monday to Thursday for 6 hours/day. The analysis results show that the recommended flexible pavement structure design based on the 2024 MDPJ for a design life of 20 years is a 60 mm thick AC-WC, a 200 mm thick Class A Aggregate Foundation Layer, and a 150 mm thick Class B Aggregate Foundation Layer, with a degree of saturation (DJ) value of 0.345 in the stable flow category, but vehicle speeds are starting to decrease.