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Kajian Efektivitas dan Efisiensi Pemanfaatan Limbah Batu Bara dalam Pembuatan Paving block Ramah Lingkungan erliana, hilma; Dwinta, Ade
Jurnal Teknik Sipil dan Teknologi Konstruksi Vol 9, No 2 (2023): Jurnal Teknik Sipil dan Teknologi Konstruksi
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jts-utu.v9i2.8439

Abstract

The waste from the operation activities of the Nagan Raya 1-2 Power Plant (PLTU) has caused environmental pollution. Therefore, this research was conducted to find a solution on how to directly reduce the environmental pollution load due to the accumulation of solid waste in the form of fly ash. This was achieved by conducting a technical and economic analysis to obtain the effectiveness and efficiency values of producing environmentally friendly paving blocks. The results showed that in terms of technical analysis, the highest water absorption percentage occurred in the composition with 25% fly ash, which was 10.73%, followed by compositions with 20%, 15%, 10%, and 5% fly ash, which had absorption percentages of 10.30%, 9.69%, 9.40%, and 8.60%, respectively. According to the SNI 03-0692-1996 standard, the maximum water absorption for paving blocks of quality grade D is 10%. In terms of economic analysis, the highest cost was incurred with a composition of 0% fly ash, which was Rp. 2,565.00, followed by compositions with 5%, 10%, and 15% fly ash, which had costs of Rp. 2,516.00, Rp. 2,468.00, and Rp. 2,420.00, respectively. Therefore, it can be concluded that the composition with 15% fly ash meets the effectiveness and efficiency criteria in both technical and economic aspects. Keywords: Fly ash, technical analysis, economic analysis
Pemelajaran Pemularasan Jenazah Di SMK Negeri 1 Samatiga Luthfi, Luthfi; Erliana, Hilma; Dwinta, Ade; Sari, Intan Wulan; Nuthihar, Rahmad; Hasan, Riza
Jurnal Pengabdian Sosial Vol. 1 No. 9 (2024): Juli
Publisher : PT. Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/fxs4va74

Abstract

Sekolah Menengah Kejuruan (SMK) Negeri Samatiga merupakan salah satu dari 11 Sekolah Menengah Kejuruan Negeri yang ada di Kabupaten Aceh Barat. Permasalahan yang dihadapi terkait kurangnya pemahaman siswa mengenai kepengurusan jenazah sesuai ajaran Islam. Pemahaman ini dianggap penting sebagai bagian dari fardhu kifayah dalam agama Islam. Kendala logistik, seperti kurangnya sarana dan prasarana, juga menjadi tantangan dalam melaksanakan praktik pemulasan jenazah di sekolah. Alternatif solusinya adalah menyelenggarakan pelatihan pemulasan jenazah di SMK Negeri 1 Samatiga untuk memberikan pengalaman dan pengetahuan yang lebih baik kepada siswa serta meningkatkan fasilitas praktik pemulasan jenazah di sekolah. Pemelajaran ini sebagai tanggung jawab sosial dan kontribusi positif terhadap masyarakat. Metode yang digunakan sosialisasi, diskusi, dan praktek. Pemelajaran dilaksanan di ruang kelas  SMK Negeri 1 Samatiga dengan  tahapan pembukan, pemberian materi dan praktek langsusng tata cara memandikan jenazah, mengkafani jenazah,  menshalatkan jenazah, dan menguburkan jenazah. Pelatihan ini membantu siswa mendapatkan pengalaman secara langsung dan ilmu pengetahuan dari materi pelajaran yang belum tersampaikan secara maksimal)
Pengaruh Penggunaan Bahan Tambah Sebagai Substitusi Semen dan Agregat Terhadap Nilai Kuat Tarik Belah Beton Mutu Tinggi Hybrid Ade Dwinta; Hilma Erliana; Chaira Chaira
G-Tech: Jurnal Teknologi Terapan Vol 8 No 4 (2024): G-Tech, Vol. 8 No. 4 Oktober 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v8i4.5403

Abstract

Concrete is a primary construction material, with aggregate as its main component. However, to meet the demands for more environmentally friendly and economical construction, alternative materials such as palm shell chunks (BCS), pozzolan sand, fly ash, and iron ore are needed. This study aims to evaluate the performance of concrete using variations of these aggregates and additional materials. The method employed includes testing the physical and mechanical properties, such as specific gravity, absorption, abrasion, and split tensile strength at 28 and 56 days. The results indicate that Split and BCS aggregates meet the abrasion standard of < 50%, with Split showing greater durability. The hybrid concrete (BMT-FBPP) using fly ash and pozzolan sand experienced a split tensile strength increase of 19.85% at 28 days and 24.57% at 56 days compared to normal concrete. It can be concluded that these alternative materials can enhance concrete performance, making them suitable for sustainable construction.
Perbedaan Dimensi Benda Uji Terhadap Kuat Tekan Beton Erliana, Hilma; Yusra, Cut Liliiza; Dwinta, Ade; Hasdanita, Fitry
VOCATECH: Vocational Education and Technology Journal Vol 6, No 1 (2024): October
Publisher : Akademi Komunitas Negeri Aceh Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38038/vocatech.v6i1.182

Abstract

AbstractConcrete is one of the most widely used construction materials in various types of buildings and infrastructure. One of the critical factors in the quality of concrete is its compressive strength, which is measured through testing using cube- or cylinder-shaped specimens. Although testing standards have been established, the test results between these two specimen shapes often show significant differences. Therefore, this study aims to analyze the influence of specimen dimensions and shapes on the results of concrete compressive strength tests. The research was conducted at the Foundation Construction, Concrete, and Road Paving Laboratory at the Aceh Barat State Community Academy, using materials such as Andalas Portland cement, concrete sand, gravel, and water from the laboratory. The tests were performed according to SNI methods on cube and cylinder specimens at different concrete ages (7, 14, and 28 days). The results showed that the average compressive strength of both cylinder and cube samples increased with the age of the concrete. At 28 days, the average compressive strength of the cylinder was 17.243 MPa, while the cube reached 20.821 MPa. The ratio between the compressive strengths of the cylinder and the cube (f'c/f'ck) ranged from 0.825 to 0.837, indicating that the cylinder's compressive strength was about 83% of the cube's. The difference in compressive strength between the cylinder and cube specimens is influenced by stress distribution during testing, which is affected by the shape and dimensions of the specimens. Meanwhile, the compressive strength ratio between these two specimen shapes remained stable across different concrete ages, suggesting that the difference in specimen shape consistently affects the compressive strength test results.Keywords:  Specimen dimensions, Compressive strength, Cube, Cylinder AbstrakBeton merupakan salah satu bahan konstruksi yang paling sering digunakan dalam berbagai jenis bangunan dan infrastruktur. Salah satu faktor penting dalam kualitas beton adalah kuat tekan, yang diukur melalui pengujian menggunakan benda uji berbentuk kubus atau silindris. Meskipun standar pengujian telah ditetapkan, hasil uji antara kedua bentuk benda uji ini sering menunjukkan perbedaan signifikan. Oleh karena itu, penelitian ini bertujuan untuk menganalisis pengaruh dimensi dan bentuk benda uji terhadap hasil pengujian kuat tekan beton. Penelitian ini dilakukan di Laboratorium Konstruksi Pondasi, Beton, dan Pengaspalan Jalan pada Akademi Komunitas Negeri Aceh Barat, menggunakan material seperti semen Portland Andalas, pasir beton, split, dan air dari laboratorium tersebut. Pengujian dilakukan dengan menggunakan metode SNI untuk benda uji kubus dan silinder pada berbagai usia beton (7, 14, dan 28 hari).  Hasil menunjukkan bahwa kuat tekan rata-rata sampel berbentuk silinder dan kubus meningkat seiring dengan bertambahnya umur beton. Pada umur 28 hari, kuat tekan rata-rata silinder adalah 17,243 MPa, sementara kubus mencapai 20,821 Mpa. Rasio antara kuat tekan silinder dan kubus (f'c/f'ck) berada pada kisaran 0,825 hingga 0,837, menunjukkan bahwa kuat tekan silinder sekitar 83% dari kuat tekan kubus. Perbedaan kuat tekan menunjukkan bahwa antara benda uji silinder dan kubus dipengaruhi oleh distribusi tegangan selama pengujian, yang disebabkan oleh perbedaan bentuk dan dimensi sedangkan Rasio kuat tekan antara kedua bentuk benda uji ini tetap stabil pada berbagai usia beton, menunjukkan bahwa perbedaan bentuk benda uji memberikan pengaruh yang konsisten terhadap hasil uji kuat tekan.Kata Kunci:Dimensi benda uji, Kuat tekan, kubus, silinder