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All Journal Jurnal Mahasiswa Jurusan Teknik Sipil Rekayasa Sipil Civil Engineering Journal Civil and Environmental Science Journal (CIVENSE) Astonjadro APPLIED RESEARCH ON CIVIL ENGINEERING AND ENVIRONMENT (ARCEE)
Eva Arifi
Jurusan Teknik Sipil Fakultas Teknik Universitas Brawijaya
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science Materials Science & Nanotechnology Transportation

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PENGARUH BACILLUS SUBTILIS YANG DIINOKULASIKAN PADA AGREGAT DAUR ULANG TERHADAP PERMEABILITAS BETON Jeremi Cevin Silitonga; Eva Arifi; Devi Nuralinah
Jurnal Mahasiswa Jurusan Teknik Sipil Vol. 1 No. 3 (2023)
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Brawijaya

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Abstract

Beton merupakan suatu komposit yang terbentuk dari campuran pasir, kerikil, batu pecah, atau agregat lainnya yang dicampur dengan pasta yang terbuat dari semen dan air. Hasilnya adalah suatu massa yang menyerupai batuan dan merupakan bahan yang paling banyak penggunaannya dalam pembangunan infrastruktur. Beton memiliki berbagai macam kelebihan dibandingkan bahan baku lainnya seperti harganya yang relatif lebih murah, mudah dicetak, biaya perawatan yang relatif rendah, tahan api, dapat dicor ditempat, rigiditas yang tinggi, dan penyediaan material yang mudah. Tetapi industri konstruksi juga bertanggung jawab atas beberapa masalah lingkungan yaitu eksploitasi bahan baku alam dalam jumlah besar seperti agregat untuk produksi semen dan beton mengakibatkan ketersediaan sumber daya alam yang terus menerus tersubgradasi. Salah satu alternatif untuk mengurangi masalah yang ditimbulkan oleh industri konstruksi tersebut adalah dengan menggunakan agregat kasar daur ulang atau recycled coarse aggregate (RCA) yang berasal dari limbah konstruksi. Namun, RCA memiliki kekurangan dibanding NCA, karena RCA masih memiliki kandungan mortar yang melekat pada permukaannya, porositas yang tinggi, kemungkinan terjadinya retakan mikro, serta zona transisi antarmuka atau interface transition zones (ITZ) yang lemah. Jika nilai porositas tinggi, maka akan berdampak pada meningkatnya nilai penyerapan air, nilai berat isi menurun, dan nilai kuat tekan akan menurun pada RCA. Ini berdampak negatif terhadap sifat mekanik dan daya tahan beton yang menggunakan RCA. Metode yang digunakan yaitu dengan metode pengisian pori-pori dengan presipitat kalsium karbonat (CaCO3) dengan Bakteri Bacillus Subtilis. Penggunaan beton yang menggunakan material RCA yang telah diinokulasi bakteri Bacillus Subtilis menunjukkan nilai permeabilitas yang lebih kecil jika dibandingkan dengan beton yang menggunakan material recycle coarse aggregate (RCA).Limbah beton dengan minimal mutu beton K-300 yang diperbaiki dengan bakteri Bacillus Subtilis dapat dimanfaatkan untuk mengurangi pencemaran lingkungan dan meningkatkan kualitas beton agar layak digunakan. Kata kunci : permeabilitas, recycled coarse aggregate, Bacillus Subtilis, beton, konstruksi
Comparison of Formwork use in Building X Project in Surabaya City Agriansyah, Eza; Suryo, Eko Andi; Arifi, Eva
Civil and Environmental Science Journal (CIVENSE) Vol. 6 No. 2 (2023)
Publisher : Fakultas Teknik Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/civense.v6i2.411

Abstract

The Value Engineering method is a method that analyzes the problems of a project through a systematic and organized approach by eliminating unnecessary costs without reducing the function, appearance, quality, and reliability of the project. The object x building, which has an estimated project value of IDR 42,812,329,371 in structural work. With the estimated value of the work costing a lot, it is, therefore, necessary to make efforts to streamline costs by using the value engineering method; this study aims to choose an alternative material for it. This research method uses a Pareto chart to find the highest work value. The results of this study indicate that the beam work is priced at IDR 15,088,457,899, floor plate work of IDR 12,530,471,281, column work of IDR 10,228,438,679. The results of the analysis of alternative structural calculations using semi-system formwork and full system formwork, which initially used conventional formwork, were simulated using alternative 1, namely semi-system formwork,k and by using alternative two full system formwork. The two alternatives are applied to column, beam and floor plate formwork. So, for this building, it is recommended to replace formwork because the conventional formwork used in this building incurs a large enough price, it is necessary to save on beam parts, and it is recommended to use full system formwork because the cost of beam formwork using full system formwork is IDR 134,950 per square meter. For the floor plate formwork, it is recommended to use a full floor plate formwork system because the cost per square meter is IDR 202,360. And for columns, it is recommended to use full system formwork because the cost of column formwork if using full system formwork is IDR 115,290. And from the use of all the full-system formwork for structural work, a total cost of IDR 40,312,992,291.32.
The Effectiveness Of Using Column Formwork In A Multi-Story Building Construction Project Vansya, Muhammad Lawdy Dhiyaa; Arifi, Eva; Wijaya, Ming Narto
Rekayasa Sipil Vol. 18 No. 2 (2024): Rekayasa Sipil Vol. 18 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.02.14

Abstract

Building the structural components is crucial for constructing a multi-story building. In the process of creating these components, which is commonly done through casting, a tool called formwork is required. Formwork is a tool used to mold the necessary concrete structures, ensuring that their shape and dimensions align with the concrete material's planning. Formwork tasks for concrete work significantly impact costs. Different formwork options, including traditional, semi-system, and full-system forms, are available. This research aims to assess cost-effectiveness through value engineering, specifically focusing on column formwork, by comparing their utilization in a multi-story construction project. The study begins by collecting primary data, namely working drawings, so that the volume of conventional formwork can be calculated. Then, budget planning calculations are made to analyze the cost comparison of each formwork alternative. The selection of the appropriate formwork affects the speed of execution and the costs incurredIn this construction project for the building, the conventional column formwork results in expenses amounting to IDR 587,749,263.04 and requires 28 days for completion, while semi-system column formwork achieves a 37% cost saving with the same duration of 28 days, and full-system column formwork becomes 64% more cost-effective with a construction period of 10 days.
The Experimental Test of Radial PE-Reinforced Polymer Pipe Under Short-Time Hydraulic Pressure Krisnawan, Bagus; Arifi, Eva; Setyowulan, Desy
Rekayasa Sipil Vol. 18 No. 3 (2024): Rekayasa Sipil Vol. 18 No. 3
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.03.8

Abstract

The resistance of thermoset polymer pipes to compressive forces is a concern in the reliability of piping infrastructure. To maintain the reliability of these piping systems, it is imperative to understand and improve the resistance of pipes. The use of polyethylene (PE) rope as Reinforce Polymer Pipe (RPP) composite material was tested with Short-Time Hydraulic Pressure to determine the stress-strain distribution as well as the durability of its mechanical properties. This study used 4mm diameter polyethylene rope arranged radially coiled inside a 40cm diameter polymer pipe with a thickness of 1cm using a mixture of Unsaturated Polyester Resin (UPR), fly ash, sand, catalys and cobalt. The test results show that the composite material has strong mechanical properties and is resistant to hydraulic compressive forces with an average deformation of 8.2 mm with an average maximum load of 33.57kN with the polymer experiencing cracks and damage but the polyethylene rope remains in good condition and has good ductile or elastic properties against compression without significant damage. The highest positive mean strain value of 0.4. The graph displays strain values that are continuously positive up to 50-100 seconds and then drop to negative values quickly indicating that the polymer pipe provides good resistance at the beginning of 50-100 seconds and then experiences damage but the pipe can still return to its original shape with damage to the polymer having an average maximum stress value of 5.23 Mpa with an average duration of 266 seconds while the lowest stress value is 3.34 Mpa.
High Initial Concrete Compressive Strength with Variations of Superplasticizer and Silica Fume Additions Rizal, Nanang S.; Arifi, Eva; Mufarida, Nely A.
Civil Engineering Journal Vol 11, No 1 (2025): January
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2025-011-01-07

Abstract

Concrete is one of the construction materials resulting from a combination of cement, fine aggregate, coarse aggregate, and water, which are mixed into a solid mass and then can be added with minerals (additives) or chemical additives (admixtures). The purpose of this study is to produce high-quality concrete that is optimum at the early age of the concrete so that the concreting time can be shortened, including by adding superplasticizer as a filler and silica fume as an accelerator. This research method involves making a cylindrical test object with a diameter of 15 cm and a height of 30 cm. Then, the concrete mixture is added with silica fume brand Sika Fume and superplasticizer brand Sika Concrete produced by PT. Sika with 19 variations of the mixture composition; the compressive strength test of the concrete is carried out at 3 days, 7 days, and 28 days. The findings are that 75% of concrete samples using additional materials in the form of silica fume and superplasticizer are quite significant in increasing the initial compressive strength of the concrete by up to 30% both at the age of 3 days, as well as at the age of 7 days and 28 days. The use of additional materials in the form of silica fume and superplasticizer in concrete mixtures with the right levels can generally improve the quality of concrete in its initial compressive strength at the age of 3 days or its workability or fluidity. However, silica fume and superplasticizer materials, when entered into concrete, have mutually influenced performance. The innovation is that high-quality concrete that is optimum at an early age of concrete can be done easily and cheaply using materials that are easily found in the field by combining superplasticizer as a filler and silica fume as an accelerator. Doi: 10.28991/CEJ-2025-011-01-07 Full Text: PDF
Pengaruh Penggunaan Recyled Coarse Aggregate (RCA) yang telah Diperbaiki oleh Bakteri Micrococcus Luteus dengan Penambahan Kadar Glukosa terhadap Permeabilitas Beton Naufal Ammar Ainurridho; Arifi, Eva; Nuralinah, Devi
Jurnal Mahasiswa Jurusan Teknik Sipil Vol. 1 No. 2 (2025): Student Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Brawijaya

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Abstract

Meningkatnya industri konstruksi menyebabkan peningkatan kebutuhan beton serta limbah pembongkaran dan konstruksi. Diperlukan pemanfaatan kembali limbah konstruksi dan pembongkaran berupa beton untuk didaur ulang menjadi recyled coarse aggregate (RCA). Diperlukan perbaikan terhadap RCA karena kualitas RCA lebih rendah dibandingkan agregat kasar alami dikarenakan terdapat sisa mortar yang menempel pada permukaan agregat. Oleh karena itu, diperlukan perbaikan dengan menggunakan metode biodeposisi. Penelitian ini memanfaatkan bakteri ureolitik untuk menghasilkan enzim urease yang akan menghidrolisis urea dan mengendapkan CaCO3. Dengan menambahkan glukosa sebagai sumber karbon bakteri dalam menghasilkan eksopolisakarida. Dilakukan uji karateristik pada RCA seperti sebelum dan sesudah dilakukan perendaman dengan bakteri micrococcus luteus dengan penambahan kadar glukosa 0,1%; 0,2%; dan 0,3% selama 14 hari. Kemudian dilakukan pembuatan benda uji beton kubus dengan ukuran 15x15x15 cm. Setelah benda uji berusia 28 hari dilakukan pengujian permeabilitas beton. Hasil dari penelitian menunjukkan bahwa perbaikan menggunakan metode biodeposisi dengan penambahan glukosa terbukti mampu meningkatkan mutu RCA. Meningkatnya mutu RCA menyebabkan penurunan nilai permeabilitas beton.
Analisis Perbandingan Konfigurasi Jembatan Model pada Rangka Baja Tipe Warren Truss dengan Konfigurasi Rangka Jembatan Gabungan Tipe Warren Truss dan K-Truss Abrar, Muhammad Fathul; Arifi, Eva; Budio, Sugeng Prayitno
Jurnal Mahasiswa Jurusan Teknik Sipil Vol. 1 No. 2 (2025): Student Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Brawijaya

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Abstract

Sebagai komponen krusial dalam infrastruktur transportasi, jembatan memegang peran sentral dalam memfasilitasi mobilitas dan aktivitas ekonomi. Oleh karena itu efisiensi desain jembatan, khususnya dalam konfigurasi rangka, menjadi faktor krusial dalam mengoptimalkan kekuatan struktur serta menekan biaya dan dampak lingkungan. Penelitian ini membandingkan kinerja struktural jembatan rangka baja tipe Warren Truss dengan konfigurasi rangka gabungan Warren Truss–K-Truss, berfokus pada lendutan maksimum, efisiensi Demand Capacity Ratio (DCR), dan total berat material. Model jembatan skala dengan bentang 600 cm yang dianalisis menggunakan SAP2000, dengan pembebanan berupa berat sendiri dan beban terpusat plat baja 400 kg di tengah bentang. Hasil analisis menunjukkan konfigurasi gabungan mengalami lendutan maksimum 0,73040 mm, lebih kecil 16,82% dari Warren Truss murni 0,87809 mm. Dari segi DCR, konfigurasi gabungan lebih efisien pada elemen tarik (2,07%) dibandingkan Warren Truss (2,97%), namun sedikit kurang efisien pada elemen tekan 33,57% untuk konfigurasi gabungan dan 32,08% konfigurasi Warren Truss. Pada segi berat material, konfigurasi Warren Truss murni lebih ringan (144,83 kg) dibandingkan konfigurasi gabungan (165,62 kg). Hasil penelitian ini mengindikasikan bahwa konfigurasi gabungan menawarkan performa lendutan yang superior dan efisiensi DCR tarik yang lebih baik, namun dengan konsekuensi berat material yang lebih tinggi. Pemilihan desain harus mempertimbangkan prioritas antara minimisasi lendutan dan efisiensi berat. Penelitian ini diharapkan memberikan kontribusi terhadap pengembangan desain jembatan yang optimal, khususnya dalam konteks kompetisi akademik dan aplikasi praktis di lapangan.
Analysis Value Engineering at Work Apartment Building Wall Salsabila, Arna; Setyowulan, Desy; Arifi, Eva
ASTONJADRO Vol. 13 No. 1 (2024): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v13i1.14713

Abstract

It was Optimizing resources to analyze cost efficiency in implementing construction projects. One method that can be used for resource optimization is value engineering (VE). Value engineering (VE) as a management technique to determine the efficiency between the cost and performance of a product or project and stay on appearance, quality and maintenance. Then value engineering is applied to the construction of apartment buildings to get cost efficiencies from the initial budget planning. This study aims to determine the effectiveness of value engineering in the construction of apartment buildings, especially in-wall installations. The VE method consists of five stages: Information stage, the creativity stage, the analysis stage, the development stage, and the presentation stage. Information stage, data collection in the form of cost planning, detail engineering design, work plan and terms. Based on the data obtained, the total contract value for the apartment building is Rp. 87,328,000,000. wall installation as one of the highest cost contributors. There are two alternative recommendations, namely sandwich panel walls and precast walls. The analysis found that the sandwich panel wall has the most efficient value, namely the total RAB value of 2.5% from the initial plan.
Pengaruh Jumlah Lapisan Geopolimer sebagai Coating Agregat Kasar Daur Ulang terhadap Permeabilitas Beton Rizky Pradita Sutrisno; Arifi, Eva; Setyowulan, Desy
Jurnal Mahasiswa Jurusan Teknik Sipil Vol. 1 No. 2 (2025): Student Journal
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Brawijaya

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Abstract

Peningkatan kebutuhan beton di Indonesia mendorong pencarian material alternatif ramah lingkungan, seperti Recycled Coarse Aggregate (RCA), untuk mengurangi dampak eksploitasi agregat alam dan limbah konstruksi. Namun, RCA memiliki kelemahan intrinsik seperti penyerapan air tinggi dan densitas rendah akibat mortar residu, yang memengaruhi sifat mekanik dan durabilitas beton. Berbagai metode perbaikan RCA telah diuji, namun seringkali belum efektif menghilangkan mortar atau menimbulkan masalah ekonomi/lingkungan baru. Penelitian ini mengusulkan pelapisan geopolimer dalam beberapa variasi lapisan (1,2, dan 3 lapisan) pada RCA sebagai solusi inovatif. Geopolimer, yang terbuat dari fly ash kelas C dan diaktifkan alkali, memiliki sifat pozzolan dan kedap air, yang dapat mengisi pori-pori RCA sehingga mengurangi penyerapan air dan meningkatkan berat isi. Hasil penelitian menunjukkan bahwa pelapisan geopolimer dapat meningkatkan kualitas agregat kasar daur ulang, meningkatkan berat isi, dan menurunkan penyerapan air. Penurunan nilai permeabilitas beton juga teramati, dengan penurunan tertinggi mencapai 46% pada tiga lapis pelapisan geopolimer.
SELECTION OF METHODS OF CARRYING OUT FLOOR PLATE BEKESTING WORK WITH COST COMPARISON Agriansyah, Eza; Suryo, Eko Andi Suryo; Arifi, Eva
Applied Research on Civil Engineering and Environment (ARCEE) Vol. 5 No. 01 (2024): The Innovation of Sustainable Construction Management
Publisher : POLITEKNIK NEGERI JAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/arcee.v5i01.5753

Abstract

The process of developing an area can begin with infrastructure development, where one example of such infrastructure is a building that has various functions. The Surabaya City X building construction project is one of the objects that will be studied in this study. This project has an estimated value of Rp183.000.000.000.00. With a project value of that size, this study aims to choose alternative materials for floor slab formwork work. Floor plate formwork work is one type of work that results in the waste of material used for formwork. Formwork planning requires consideration of using a method or methods to make it easier and cheaper, especially for buildings that are the same shape as the previous building and are of the same size. Conventional floor plate formwork materials are wood, multiplex, and nails; alternative choices are conventional formwork, semi-system formwork, full-system formwork, and bondek plate formwork. The results of this study indicate that when initially analyzed using conventional formwork, it costs Rp6.421.406.646; when using alternative semi-system formwork, it costs Rp6.002.969.805; using full system formwork costs Rp5.530.690.993; and if using bondek plate formwork, it costs Rp6.116.119.937.
Co-Authors Abrar, Muhammad Fathul Adikasih, Prima Aditya, Brillyan Agriansyah, Eza Al Raes, Sulaiman Alangnabil, Muhammad Aldhico Satria Firmansyah Alista, Fenty Putri AmbarPratiwi, Isma Arum Anugerah Nurtjahja, Edwardo Pradana Aprianti, Kartini Ari Wibowo Bayu B.K, Bhondana BAYU B.K., BHONDANA Bayu, Bondhana Brahmana Kridaningrat, Bhondana Bayu Brahmana Budiawati, Desi Christin Remayanti Christin Remayanti N Christin Remayanti Nainggolan Coritsa, Agatha Leonie Dessanda, Ryan Radya Desy Setyowulan Devi Nuralinah Devi Nuralinah Dicky Aditya Candra Dobonsolo, Angga Januar Dufanti Ayu W Dwi Argo Eko Andi Suryo Ervando Dian Prakosa Evi Nur Cahya Farhan Aditya Farid, Muhammad Firdausy, Ananda Insan Fitri, Fatimah Azzahra FITRIA, WIKHA Gde Agung Oka Widyastana, Anak Agung Giovanni, Christoper Houston Hafidz Emirudin Grahadika Hasymi A.Q, Muhammad Ali Hendro Suseno Indra Waluyohadi Indra Waluyohadi, Indra Irfan Mustafa Irfanto, Luthfi Rinda Iswoyo Jong, Edwin Putra Jelian, Adven Jeremi Cevin Silitonga Juniko, Kanza Syahdi K, N V K., Lyutasya. K Kamilah, Fauziyah Karina Cahyaning Cahyaning Rosita Kistanti, Ida Fitri Krisnawan, Bagus Kurniawati, Agustin Dian Lufti Akbar M, N M. Taufik Hidayat M. Taufik Hidayat Marsoli, Ayuning Fitriani Maulana, Akbar Maulidianto, Mohammad Irvan Mauzudah, Ma’rifatul Mauzudah Ming Narto Wijaya Mohamed, Saker Morrida, Adam Akbar Mufarida, Nely A. Mufika, Neyla Rohmah Muhammad F, Dito Muhammad Rizky Ananda Naufal Ammar Ainurridho Nur Rizqi, Mohammad Radja Nurreza, Aditya Bagus Oktavianto Dwi Wicaksono Pawitrama, Nyoman Iswarya Permana, Muhamad Hilman Prasetyo, Faishal Dwi Prihanto, Aris Dwi Putri Dewanti Putri Patricia Raharjo, Edy Sulistyanto Redianto, Mukhamad Rivo Arrohman Fauzi Rizal, Nanang S. Rizky Pradita Sutrisno Roland Martin S Salsabila, Arna Sari, Rika Amenetya Setiawan, Ronny Shella Amalia Ramadhani Simarmata, Iwan Fernando Siregar, Julius Siti Nurlina Siti Nurlina Sri Murni Dewi Sri Murni Dewi, Hendro Suseno, Tatang Fendy Harianto, Sucipto, Nugroho Adi Sugeng P. Budio Sugeng P. Budio Sugeng Prayitno Budio Sugiarto, Najmi Nabila Suharto, Stefanus Sulistomo, Jourdan Tri Surya Pramana, Dewa Ketut Suryo, Eko Andi Suryo Suseno, Kartika Candra Tanawa, Yanssen Toruan, Andre Wirakusuma Vansya, Muhammad Lawdy Dhiyaa Wiwik Handayani