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All Journal Urban and Regional Studies Journal IPTEK: Jurnal Hasil Pengabdian kepada Masyarakat Jurnal Penelitian Teknik Sipil Konsolidasi
Eka Yuniarto
Program Studi Teknik Sipil Fakultas Teknik Universitas Bosowa
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Kadar Admixture Berbagai Jenis Superplasticizer Dan Karakteristik Mortar Grouting Rizaldo Bagus Dinata; Arman Setiawan; Eka Yuniarto
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 1 No. 1 (2023): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2023
Publisher : Program Studi Teknik Sipil Universitas Bosowa

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Abstract

In the world of construction, mortar has many functions, for example as an adhesive for precast concrete, filling voids in concrete and grouting materials. In this modern era, there are many additives that can be used to make mortar stronger and make it easier to manufacture. In this study, the additives used were Visco flow 3880 lv, Master gelnium 8305, and Consol flow 168. These additives able to slow down the drying process and can increase the strength of the mortar. This research is an experiment conducted at the Makassar Concrete Bosowa Laboratory. The composition of the mortar that will be used in this test is 1 kg of cement: 2 kg of sand. The dosage for each additive is 0.8%, 1%, and 1.2%. From the results of the study using a visco flow superplasticizer with a dose of 0.8%, 1%, and 1.2%, respectively, the results were 34.69 mpa, 35.10 mpa, 33.42 mpa. By using master glenium got 33.40 mpa, 34.20 mpa, 29.37 mpa. Meanwhile, using the console flow 30.80 mpa, 36.39 mpa, 36.10 mpa
Efektivitas Aktivator Alkali Potassium Hidroksida Dan Abu Sekam Padi Terhadap Kuat Tekan Beton Geopolimer Naufal, Muhammad; Sariman, Syahrul; Yuniarto, Eka
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 2 No. 2 (2024): Jurnal Penelitian Teknik Sipil Konsolidasi, Mei 2024
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v2i2.3205

Abstract

Geopolymer concrete is a concrete product whose binding reaction is a polymerization reaction. In this reaction Aliminium (Al) and Silica (Si) have an important role because Aluminum and Silica will produce AlO2 and SiO4. The alkaline activators used are Sodium Hydroxide (NaOH), Potassium Hydroxide (KOH) and Sodium Silicate (Na2SiO3). Constituent material on. Geopolymer concrete consists of coarse aggregate, fine aggregate and water. NaOH is dissolved with distilled water, then mixed with Na2SiO3. In the research process using the curing method by wrapping for 28 days. The compressive strength values of concrete using 95%, 90%, 85% ASP variations of NaOH activators were 21.42 Mpa, 20.10 Mpa, 16.04 Mpa. The compressive strength values of concrete using KOH activators with variations of ASP 95%, 90%, 85% were 26.86 Mpa, 22.74 Mpa, 18.40 Mpa. The use of KOH as an aktivator with Variation of Rice Husk Ash experienced an increase in compressive strength compared to using the NaOH activator.
Pengaruh Cairan Alkali Terhadap Kuat Geser, Kuat Tekan Bebas Dan Konsistensi Pada Tanah Lempung Risal, Risal; Sariman, Syahrul; Yuniarto, Eka
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 2 No. 2 (2024): Jurnal Penelitian Teknik Sipil Konsolidasi, Mei 2024
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v2i2.3249

Abstract

Clay soil is an aggregate of microscopic and submicroscopic particles derived from the chemical decay of the constituent elements of the aid. One of the efforts to improve clay soil by adding alkaline liquid as a soil stabilization agent by testing shear strength and free compressive strength and consistency. This study used the addition of alkaline liquid as much as 0.8%, 1%, 1.2%, and 1.4% of the weight of dry soil. From the results of the study, the highest value of shear strength testing, cohesion value and shear angle was obtained at the addition of 1.4% alkaline liquid, namely 0.5280 value of shear strength, 0.38540 for cohesion value and 27.83 value of shear angle. In the compressive strength test, the highest increase occurred in 1.4% alkaline liquid, which is 0.864. Similarly, in the consistency test, the highest increase was obtained in the addition of alkaline liquid 1.4%, in the liquid limit test the highest value was 56.93, the plastic limit was 29.07, the shrinkage limit was 19.62 and the plasticity index value was 27.86. It can be concluded that the test results of shear strength obtained an increase in the value of cohesion, shear strength and soil shear angle at the addition of 1.4%, in the liquid limit test the highest value was 56.93, the plastic limit was 29.07, the shrinkage limit was 19.62 and the plasticity index value was 27.86.
Pengaruh Penambahan Garam Dapur dan Pupuk Urea Terhadap CBR Tanah Lempung Lunak Mangasik, Setiawan Anugerah; Sariman, Syahrul; Yuniarto, Eka
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 2 No. 2 (2024): Jurnal Penelitian Teknik Sipil Konsolidasi, Mei 2024
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v2i2.3371

Abstract

Soil is the most important part to support construction, one of which is soft clay soil which has a high-water content so that the CBR of soft clay soil is low and causes a decrease in the soil's bearing capacity. This research aims to determine the effect of adding urea fertilizer and table salt on the CBR value of soft clay soil. The percentages used in this research were 10% urea fertilizer and 5%, 10%, 15% table salt. The results of the soil characteristics test, passing sieve No.200 was 83.60%, liquid limit 54.04%, plastic limit 24.07%, shrinkage limit 18.71% and plasticity index 28.97%. According to AASHTO land is included in category A-7-5 while according to USCS land is included in category CH. From the results of the specific gravity examination, the specific gravity was found to be 2.653, this soil is included in the organic clay soil category which has a specific gravity value between 2.58-2.65. The maximum CBR value occurred when adding 10% urea fertilizer + 15% table salt with a CBR value of 21.68%.
Reduksi Semen Dengan Campuran Fly Ash Dan Kapur Terhadap Kuat Tekan Dan Kuat Tarik Belah Beton Nur, Muhammad Alfian; Setiawan, Arman; Yuniarto, Eka
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 3 No. 1 (2025): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2025
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v3i1.4246

Abstract

The use of concrete in construction continues to increase each year, leading to a rise in cement prices as the primary component of concrete. Given this situation, this study aims to reduce cement demand while utilizing waste materials, such as Fly Ash and lime, to partially replace cement. This research examines the effect of partially replacing cement with reduction levels of 5%, 10%, and 15%, substituted with a mixture of Fly Ash and lime in proportions of 75%:25%, 50%:50%, and 25%:75% for each reduction level. The target compressive strength of the normal concrete is 25 MPa. The results indicate that using Fly Ash and lime impacts the compressive and split tensile strength of concrete. At a 5% cement reduction with 75% Fly Ash and 25% lime, the compressive strength increased by 0.74% compared to normal concrete. In split tensile testing, optimal improvement was achieved at a 5% cement reduction with 25% Fly Ash and 75% lime, showing a 1.85% increase compared to normal concrete. This study demonstrates that partially replacing cement with Fly Ash and lime not only reduces cement usage but also enhances concrete performance, making it a promising alternative for sustainable construction.
Pengaruh Manajemen Material Terhadap Produktivitas Kerja Pada Pekerjaan Pembangunan Mall Pelayanan Publik Gowa Ashar, Ahmad; Abduh, M. Natsir; Yuniarto, Eka
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 3 No. 1 (2025): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2025
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v3i1.4265

Abstract

Low labor productivity in a construction project can have a negative impact, such as causing project delays so that the project is not completed on time, therefore this study aims to identify factors in material management that affect labor productiveness. The type of research used is a quantitative approach with the survey method and analyzed with the double linear regression analysis operated with the Statical Program for Social Science (SPSS) program. The double lineary regression is used to trace patterns of relationships between bound variables with two or more free variables. Based on the regression model obtained the output value of F sig. 0,000 smaller than 0.05 stated that material delivery, material usage, material storage and Quality Control together (simultaneously) influence the (Y) productivity variable. The factor that has the most dominant influence on the productivity of the project is the Material Delivery Variable (X1) with a significance of 0.001 with a R-square value of 0.428 which means 42.8% of the influence of X1 on Labor Productivity (Y) and the Material Usage Variabel (X2) signifying value of 0,000 with the R-Square of 0.557 which means a large 55.7% of the impact of X2 on Labor Produktivity. (Y).
Uji Kuat Tekan dan Kuat Lentur Beton Akibat Reduksi Semen Dengan Campuran Abu Sekam Padi Dan Bentonite Chau, Jaycin Agnes Elisa; Yusuf, A. Rumpang; Yuniarto, Eka
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 3 No. 1 (2025): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2025
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v3i1.4270

Abstract

The rapid development of concrete technology has introduced additives that enhance and improve concrete properties. One material that can substitute cement is pozzolan, such as rice husk ash (RHA) and bentonite, which contain SiO2 and Al2O3. This study aims to examine the effect of RHA and bentonite mixtures as partial cement replacements on the compressive and flexural strength of concrete. The cement content was reduced by 5%, 10%, and 15%, and replaced with RHA and bentonite in proportions of (0%:100%), (100%:0%), and (50%:50%) for a 5% reduction, and (50%:50%) for 10% and 15% reductions. The results showed that normal concrete achieved a compressive strength of 25.29 MPa, while RHA 5% yielded 18.40 MPa, BT 5% achieved 24.44 MPa, and RHA 2.5% BT 2.5%, RHA 5% BT 5%, and RHA 7.5% BT 7.5% produced strengths of 22.27 MPa, 16.28 MPa, and 10.38 MPa, respectively. The normal concrete flexural strength was 3.73 MPa, with the optimum flexural results for RHA 5% at 4.00 MPa, BT 5% at 4.27 MPa, and the RHA 5%, BT 5% mix at 3.87 MPa.
Penggunaan Cangkang Kemiri Sebagai Pengganti Sebagian Agregat Kasar Terhadap Kuat Tekan Dan Kuat Lentur Beton Dengan Zat Tambah Silica Fume Marcelline, Aldo; Sariman, Syahrul; Yuniarto, Eka
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 3 No. 1 (2025): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2025
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v3i1.4283

Abstract

The high demand for concrete in construction has increased the need for concrete materials, driving the mining of rocks as a primary component of concrete. Using simple technology that utilizes local resources, including waste as building materials, is essential for concrete technology development. Candlenut shells are a new potential material due to their hard texture. This study uses a design strength of 25 MPa for normal concrete, aiming to observe the effect of using candlenut shells as a partial coarse aggregate replacement with added Silica Fume on concrete's compressive and flexural strength. The mixing method involves replacing coarse aggregate with candlenut shells in 5%, 10%, and 15% proportions. Silica Fume is added at 20% of the cement weight for concrete without candlenut shells and with shell variations at 5%, 10%, and 15%. Results show that adding candlenut shells reduces compressive and flexural strength, but adding Silica Fume enhances both strengths. Notably, the 5% candlenut shell variation with 20% Silica Fume shows higher strength than normal concrete.
Pemanfaatan Serbuk Besi Sebagai Pengganti Parsial Pasir Dan Silicafume Sebagai Pengganti Semen Terhadap Kuat Tekan Dan Kuat Lentur Beton Abeng, Christie Bongga; Sariman, Syahrul; Yuniarto, Eka
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 3 No. 2 (2025): Jurnal Penelitian Teknik Sipil Konsolidasi, Mei 2025
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v3i2.4375

Abstract

With the advancement of technology and increasingly complex construction needs, the use of concrete has become essential in infrastructure development. One innovation to improve concrete quality is by adding supplementary or replacement materials. In Indonesia, iron powder is rarely utilized, leading to environmental pollution. This study uses iron powder to partially replace sand, aiming to address waste issues, and incorporates silica fume to partially replace cement. The mixing method replaces sand with 5%, 10%, 15%, 20%, and 25% iron powder and adds 10% silica fume relative to the cement amount in each iron powder variation. Results show that using iron powder and silica fume increases compressive and flexural strength at 5% and 10% iron powder with 10% silica fume. However, iron powder at 15%, 20%, and 25% with 10% silica fume led to reduced strength. Maximum compressive and flexural strength occurred at 10% iron powder with values of 27.55 MPa and 5.07 MPa, indicating that higher iron powder levels reduce compressive and flexural strength.
Analisis Kuat Tekan Dan Kuat Tarik Belah Beton Dengan Menggunakan Cangkang Kepiting Dan Cangkang Kerang Sebagai Pengganti Parsial Semen Paraktuk, Azer Kalak; Mallawangeng, Tamrin; Yuniarto, Eka
Jurnal Penelitian Teknik Sipil Konsolidasi Vol. 3 No. 1 (2025): Jurnal Penelitian Teknik Sipil Konsolidasi, Januari 2025
Publisher : Program Studi Teknik Sipil Universitas Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56326/jptsk.v3i1.4381

Abstract

The use of concrete materials in the world of construction has become the main choice because of its strength and durability. However, the use of concrete also has negative impacts on the environment, such as carbon dioxide emissions and the use of large amounts of energy. Therefore, using organic waste such as crab shells and oyster shells can help reduce waste and promote recycling practices.  In this research, a normal concrete compressive strength design of 25 MPa was used with the aim of research to obtain the effect of using crab shells and clam shells as a partial replacement for cement. The mixing method is carried out by partially replacing cement with crab shell powder and oyster shells as much as 4%, 8% and 12%, by carrying out compressive and tensile strength tests of the concrete. This research shows that partial replacement of cement with crab shells and clam shells for concrete as a whole causes a decrease in compressive and tensile strength. However, the use of oyster shells as a substitute for cement at an addition of 4% produces concrete compressive strength and split tensile strength that is slightly higher compared to normal concrete targets and the use of crab shells at the same percentage.
Co-Authors Abduh, M. Natsir Abeng, Christie Bongga Akrim, Djusdil Andi Rumpang Yusuf Arman Setiawan Ashar, Ahmad Aswanti, Rina Cangara, Iin Fitrianty Suaib Cangara, Satriawati Chau, Jaycin Agnes Elisa Haris, Zainal Abidin Irfan, Achmad Kalua, Gustianus Lebang, Fauzy Mangasik, Setiawan Anugerah Marcelline, Aldo Muhammad Naufal, Muhammad Muliyani, Savitri Prasandi Nur, Muhammad Alfian Palmabas, Suardi Paraktuk, Azer Kalak Ridwan, Ridwan Rizaldo Bagus Dinata Sammin, Widianto Sariman, Syahrul Syahriman, Syahrul Wicaksono, Muh. Ramdhan Ainun Yusuf, A. Rumpang