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All Journal Jurnal Aplikasi Teknik Sipil Buletin Profesi Insinyur International Journal of Research in Vocational Studies (IJRVOCAS) Jurnal Masyarakat Indonesia
Intan Safitri
Politeknik Negeri Tanah Laut
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Analisis Campuran Lapis Tipis Beton Aspal (LTBA) Menggunakan Bahan Tambahan Karet Alam SIR 20 Terhadap Karakteristik Marshall Intan Safitri
Jurnal Aplikasi Teknik Sipil Vol 20, No 2 (2022)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1027.856 KB) | DOI: 10.12962/j2579-891X.v20i2.9441

Abstract

Karet alam SIR 20 merupakan hasil produksi bahan setengah jadi dari perusahaan karet. Saat ini, volume karet alam SIR 20 hasil produksi perusahaan karet cukup melimpah dengan menurunnya harga karet di pasar global. Pemanfaatan material karet alam SIR 20 dalam campuran Lapis Tipis Beton Aspal (LTBA) pada lapis permukaan (surface) pada struktur perkerasan jalan raya diharapkan mampu membantu menyelesaikan permasalahan tersebut. Penambahan bahan karet alam dalam campuran aspal ini menggunakan metode kering dengan persentase penambahan karet sebanyak 0%, 6%, 8% dan 10% terhadap berat aspal. Hasil dari penelitian menunjukkan bahwa variasi persentase penambahan karet SIR20 dalam campuran LTBA meningkatkan nilai karaktersitik marshall pada campuran aspal. Hasil optimum yang terbaik dari setiap kadar persentase ditunjukkan pada penambahan kadar karet 8% dan kadar aspal 5,8% dengan nilai stabilitas 2121,09 kg; nilai flow 3,80 mm; nilai VIM 3,82%; nilai VMA 17,25%; nilai VFA 77,91%; MQ 558,18 kg/mm.
Effect of The Addition of Acacia Powder Ash and Carbide Welding Ash to Increase the Production of Brick Craftsmen Marlia Adriana; Norminawati Dewi; Budi Kurniawan; Intan Safitri
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 2 No. 4 (2023): IJRVOCAS - Special Issues - International Conference on Science, Technology and
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v2i4.155

Abstract

Many bricks are produced by small business and industries as construction materials. As the population increases, there is also more demand for bricks in construction construction. The materials used in this study are waste from the acacia wood burning process and carbide welding ash waste. These two materials will be tested into additives from making bricks. The research method was carried out using testing of moisture content, specific gravity, Atterberg limit testing (Liquid limit) as well as a visual description of bricks with an outside temperature without a combustion process. Of the three samples, the average moisture content obtained, the lowest moisture content value was 69.41% in a mixture of clay soil plus acacia ash which showed that the soil category was a soft organic clay category with the characteristic that the soil could be pressed with the tip of the thumb so that the soil was suitable to be used as additional raw material in making stone stones without burning. The results of the average soil specific gravity test of 2 samples showed a Gs value of 2.64 at a temperature of t0 C, this shows that the soil with the organic clay category is in accordance with the test results on the moisture content that the clay soil is the basic raw material. The liquid limit test in this study showed the average value of water content in bricks without additives as much as 120.36%: the average value of water content in bricks with additives from the values of the three samples can be known that the mineral clay material is of the montmorillonite type with a liquid limit value of 100-900. Visual observations showed that bricks printed using clay soil raw materials without additives showed a break (split) in half during the drying process for 2 days with a temperature of 30oC; the mixture of clay soil and welded ash of the brick carbide experienced small cracks / crak on the surface with the drying process at the same temperature while the mixture of clay soil with acacia ash showed intact bricks without intact bricks without fractures or cracks on the surface in the drying process using the same temperature.
Analisis Kuat Tekan Beton Geopolimer Menggunakan Fly Ash dan Serbuk Kulit Kayu Galam Budi Kurniawan; Ines Saraswati Machfiroh; Intan Safitri
Buletin Profesi Insinyur Vol 7, No 1 (2024): Buletin Profesi Insinyur (Januari-Juni)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/bpi.v7i1.240

Abstract

Pembangunan infrastruktur di Provinsi Kalimantan Selatan akan terus meningkat khususnya pada Kabupaten Tanah Laut. Hal ini terjadi mengingat Kabupaten Tanah Laut merupakan Kabupaten yang direncanakan memiliki Kawasan Industri Strategis Nasional yang terletak di Kecamatan Jorong. Maka diperlukannya bahan material untuk mendukung pelaksanaan pembangunan kawasan industri tersebut. Selain itu, Kabupaten Tanah Laut dikenal dengan daerah penjual kayu galam yang sebagian hanya dipergunakan berupa batangnya saja dan untuk kulit kayu galam tidak ada nilai ekonomisnya hanya menghasilkan sampah yang biasa ditumpuk atau dibakar. Di Kecamatan Jorong juga terdapat Pembangkit Listrik Tenaga Uap (PLTU) yang menghasilkan limbah B3 dalam jumlah cukup banyak sekitar 120 ton per hari setiap pengoperasian PLTU tersebut. Diharapkan dalam pemenuhan bahan material pembangunan kawasan industri tersebut dapat memanfaatkan limbah yang ada di sekitar seperti beton geopolimer. Dalam pembuatan beton geopolimer dilakukan penggantian bahan baku semen oleh Fly Ash yang dicampurkan dengan alkali aktivator dan penambahan campuran dengan serbuk kulit kayu galam dengan perbandingan 74:26 antara Fly Ash dan alkali aktivator dalam bahan pengganti semen. Dan perbandingan antara Fly Ash dan alkali aktivator dengan serbuk kulit kayu galam sebanyak 75:25. Hasil dari analisa kuat tekan beton umur 28 hari didapatkan hasil rata-rata paling tinggi adalah kuat tekan campuran beton normal tanpa ada pengganti semen dengan Fly Ash dan serbuk kulit kayu galam sebesar 21,153 MPa.Kata kunci: beton geopolimer, Fly Ash, kuat tekan, serbuk kulit kayu galam
Pendampingan Pengujian Material agregat Kelas A di Dinas Pekerjaan Umum, Penataan ruang dan Pertanahan UPTD Peralatan dan Penguji Material Konstruksi Kabupaten Tanah Laut Safitri, Intan; Kurniawan, Budi; Alam Sur, Widiya Astuti
Jurnal Masyarakat Indonesia (Jumas) Vol. 4 No. 01 (2025): Jurnal Masyarakat Indonesia (Jumas)
Publisher : Cattleya Darmaya Fortuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54209/jumas.v4i01.192

Abstract

This service is assistance in testing activities for class A aggregates at the Public Works, Spatial Planning and Land Services UPTD Equipment and Construction Material Testing of Tanah Laut Regency. This assistance activity will be carried out for one month starting on September 2 2024. The theme of this service is Assistance with Testing of Class A aggregate materials at the Public Works, Spatial Planning and Land Services UPTD Equipment and Construction Material Testers, Tanah Laut Regency. This activity is intended as assistance in analyzing whether the quality of the class A aggregate material used meets SNI (Standar Nasional Indonesia) and knowing whether the CBR (California Bearing Ratio) test value of the class A aggregate material used meets the requirements of the 2018 General Bina Marga Specifications (Division 5). This service method is carried out in the form of assisting UPTD employees in several aggregate tests in accordance with the required specifications. The result of this assistance activity was that testing the specific gravity and dry weight of the saturated surface revealed that it did not meet the requirements for testing the specific gravity and absorption of coarse aggregate. Meanwhile, the results of testing the specific gravity and absorption of fine aggregate showed that the specific gravity, saturated surface dry weight, apparent specific gravity and water absorption were found to meet the requirements.
Co-Authors Budi Kurniawan Budi Kurniawan Ines Saraswati Machfiroh Marlia Adriana Norminawati Dewi Widiya Astuti Alam Sur