Pemanasan global merupakan kejadian yang selalu berulang-ulang di dalam kehidupan manusia, di mana sinar matahari yang masuk ke dalam lapisan bumi, sebahagian diserap oleh bumi dan sebahagian lagi dipantulkan dan terperangkap di dalam bumi. Manusia selaku makhluk hidup di muka bumi berperan dalam menjaga pemanasan global. SMP Negeri 3 Ingin Jaya, Aceh Besar merupakan sekolah yang terletak di belakang toko-toko berlokasi di jalan Bandara Sim, Siron, Kecamatan Ingin Jaya, Kabupaten Aceh Besar. Lokasinya yang sedikit tertutup oleh toko-toko dan kurang adanya pepohonan, maka diperlukan solusi dalam hal mengatasi pemanasan global. Tujuan pengabdian ini adalah untuk menciptakan kepedulian guru dan siswa/i dalam mengurangi pemanasan global. Metode yang dilaksanakan adalah penyuluhan kepada guru dan siswa/i. Pengabdian tersebut bermula dari survey ke lapangan, diskusi dengan kepala sekolah, wawancara lisan dengan guru dan siswa/i, serta penyuluhan. Sosulsi yang ditawarkan untuk mengatasi pemanasan global, yaitu: membangun ruang terbuka hijau (dengan luas minimal 30% dari luas keseluruhan tanah), penggunaan energi alternatif, pendidikan ke masyarakat luas, dan beton ramah lingkungan. Hasil akhir dari pengabdian ini yaitu meningkatnya kesadaran dan pemahaman guru dan siswa/i terhadap pemanasan global.
Indonesia is one of the countries most prone to earthquakes, causing a lot of damage to building structures. Therefore, buildings require earthquake resistance to allow time for building occupants to evacuate from the building. The object of this research is the A1 Hajj Boarding Boarding Building for the Embarkation of Aceh which is located on Teuku Nyak Arif Street, Kuta Alam District. The purpose of this study was to see whether the building met the requirements of SNI 1726-2019 in response to the Simeulue I earthquake with a magnitude of 8.3 on April 11, 2012, using Time History analysis with the help of software ETABS. By reviewing the building deformation, displacement and deviation between levels, knowing the working forces in the form of axial forces, bending moments, and shear forces on the columns and beams of the building. Data processing will be analyzed with the standard rules of SNI 1726-2019. From the analysis, it is found that the basic shear strength due to earthquake loads is 2302.1 kN for the x direction and 637.6 kN for the y direction. The largest maximum lateral displacement is 11.445 mm for the x-direction and 11.774 mm for the y-direction, causing the interstory drift of each combination of loading structures to remain within the limits permitted by earthquake-resistant building standards (SNI 1726:2019). It can be concluded that the Aceh Embarkation Hajj Dormitory Building A1 has been designed in accordance with the SNI 1726:2019 standard.
Concrete is one of the choices as a structural material for construction in the construction sector, in this case, a concrete mixture is an object that is often used as research to obtain efficient construction methods and develop concrete constituent materials. The utilization of waste as a substitute for portland cement or additives is not a new thing. This research is expected to reduce rice snail waste that pollutes the environment and compare the compressive strength of normal concrete with concrete that uses rice snails as a partial substitute for cement and fine aggregate. This study refers to the ACI 211.1-91 and ASTM C-33/C33-08 methods. The rice snail waste was first crushed and filtered through a sieve that passed the ASTM No. 200 filter as a partial substitution of cement with substitution percentages of 0%, 5%, 10%, and 15% in the concrete mixture. The test object used is a cylinder with dimensions of 15 cm x 30 cm, totaling 40 specimens with a planned concrete quality of 17 MPa by the minimum requirements for structural concrete in SNI 2847-2019. Each percentage of 5 samples and testing will be carried out until the concrete is 28 days old in an immersion bath. The results show that the compressive strength using 0% snail shell variations was 17.35 MPa and 5%, 10%, and 15% variations were 15.74 MPa, 10.60 MPa, and 7.63 MPa. As well as the ratio of the density of the volume of concrete with mixed variations of 0%, 5%, 10% and 15%, namely 2344.4 kg/cm3, 2277.2 kg/cm3, 2170.4 kg/cm3 and 2103.7 kg/cm3. Keywords—Compressive Strength of Concrete, Rice Snail Waste, Substitution
Limbah ban bekas merupakan salah satu penyumbang limbah terbanyak. Oleh karena itu perlunya penelitian terhadap campuran beton dengan menggunakan limbah ban bekas sebagai bahan substitusi maupun bahan tambah. Serat limbah ban bekas digunakan sebagai bahan tambah dengan variasi 0%, 5%, 10%, dan 15% terhadap berat semen serta butiran halus ban bekas kendaraan yang digunakan sebagai subsitusi pasir halus dengan variasi 0%, 5% dari berat pasir halus. Hasil dari penelitian ini ialah dengan variasi beton normal dan dengan menggunakan butiran halus ban bekas kendaraan sebagai subsitusi agregat halus dan tambahan serat ban bekas kendaraan 0% menghasilkan kuat tekan sebesar 17,10 MPa. Sedangkan variasi 5% dan 10% serta 15% mengalami penurunan yaitu sebesar 15,48 Mpa, 13,10 Mpa dan 9,44 Mpa, penurunan tersebut disebabkan kurangnya daya ikatan antar material campuran, sedangkan untuk perbandingan berat volume beton dengan variasi 0% sebesar 2465,6 Kg/m3, serta berat volume beton pada variasi 5%, 10%, dan 15% ialah sebesar 2392,4 Kg/m3, 2329,4 Kg/m3 dan 2293,8 Kg/m3.
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