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All Journal Jurnal Teknik Sipil Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil BANGUN REKAPRIMA Construction and Material Journal Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS)
Leily Fatmawati, Leily
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Humanities Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Engineering Social Sciences Transportation Other

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Journal : BANGUN REKAPRIMA

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SURVEI SIMPANG BERSINYAL (Studi Kasus: Persimpangan Jl. KH. Sirojudin ”“ Jl. Banjarsari Selatan ”“ Jl. Jatimulyo) Fatmawati, Leily; Ariyanto, Arief Subakti; Fitri, Duha Nur; Zakiya, Maharani Nur; Priono, Timotius Argo Prasetya; Julianto, Wijil Dwi
Bangun Rekaprima Vol. 8 No. 2 (2022): Oktober 2022
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (821.715 KB) | DOI: 10.32497/bangunrekaprima.v8i2.3975

Abstract

Kelurahan Tembalang merupakan salah satu daerah yang berkembang pesat di kota Semarang. Hal ini dikarenakan daerah Tembalang dekat dengan area kampus, seperti Politeknik Negeri Semarang, Universitas Pandaranan, Politeknik PUPR, dan Universitas Diponegoro. Hal ini akan berdampak pada peningkatan arus lalu lintas karena banyak kendaraan / sarana transportasi tidak sebanding dengan pertumbuhan atau lalu lintas yang memadai. Permasalahan yang paling pokok adalah arus lalu lintas yang sering tersendat dan terjadi tundaan karena perbandingan kapasitas jalan dan volume lalu lintas tidak seimbang, sehingga harus di evaluasi agar dapat melayani kendaraan yang lewat saat ini maupun akan datang. Transportasi merupakan salah satu sarana penting kehidupan. Masalah transportasi perlu mendapatkan perhatian. Lokasi penelitian dilaksanakan di Jalan KH. Sirojudin-Jalan Banjarsari Selatan-Jalan Jatimulyo yang merupakan salah satu jalan dalam kota yang sibuk dan padat dalam melayani arus lalu lintas dari selatan ke utara, untuk mengetahui apakah kinerja dari ruas jalan pada simpangan tersebut telah memenuhi kebutuhan masyarakat lalu menganalisa tingkat pelayanan lalu lintas pada simpangan tersebut. Perhitungan analisa dan perencanaan dalam penelitian menggunakan analisi metode MKJI 199, dengan mengumpulkan data primer diperoleh langsung pada lokasi penelitian berupa data geometri jalan, volume lalu lintas, hambatan samping, dan waktu siklus, sedangkan untuk data sekunder berupa data jumlah penduduk dan peta lokasi penelitian. Berdasarkan hasil penelitian tersebut diperoleh nilai tingkat pelayanan dan DS (Derajat Kejenuhan), pada simpangan KH. Sirojudin-Jatimulyo merupakan kelas C dimana arus lalu lintas stabil namun kecepatan semakin terbatas.
ANALISA PENGARUH BATU PORI DAN KERTAS FILTER PADA PENGUJIAN TRIAXIAL TERHADAP LAJU DRAINASE Widoanindyawati, Vemi; Triwardaya, Triwardaya; Fatmawati, Leily; Parhadi, Parhadi; Suparman, Suparman; Wasino, Wasino
Bangun Rekaprima Vol. 10 No. 1 (2024): April 2024
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v10i1.5634

Abstract

Soil shear strength testing is a test required for analysis of soil bearing capacity, slope stability, and analysis related to retaining walls. One method of testing soil shear strength is to use a Triaxial tool. The Triaxial test equipment consists of a glass tube which is then filled with water as a pressure cell. Then it is connected to the drainage regulator inside and outside the test object. Failure of the test object is carried out by applying vertical stress to the test object until it collapses. From the Triaxial test, there are several parts that can influence the testing stage process. Among them are the stages of the drainage process, to speed up the rate of drainage, Triaxial test objects require pore stones and filter paper. The use of pro stone and filter paper is based on the type of porosity property. In this research, an analysis of the effectiveness of several types of pore stone will be carried out, including Kaolin dust and types for filter paper, including Whatman No. 54. The placement of pore stone is provided in two variations, including samples with one layer of pore stone and samples with two layers of pore stone. Meanwhile, the sample filter paper is modified by using one layer of filter paper, 2 layers of filter paper, and a drain strip around the sample.
PENDAMPINGAN PEMBANGUNAN PONDASI JEMBATAN SEBAGAI AKSES PERUMAHAN PERMATA JANGLI TAHAP 2 Sulistiawati, Baiq Heny; Pangesti, Rendy Dwi; Supriyadi, Supriyadi; Fatmawati, Leily; Rahmawati, Roselina; Setyono, Karnawan Joko; Sukoyo, Sukoyo; Mulyono, Tedjo; Sudarmono, Sudarmono; Warsiti, Warsiti
Bangun Rekaprima Vol. 10 No. 1 (2024): April 2024
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v10i1.5584

Abstract

Bridges have a central role as routes that connect between regions, one of which is Permata Jangli Housing Phase 2. Because of the importance of this connectivity, community dedication to repairing bridges is a major concern in efforts to maintain the safety and sustainability of the bridge. This community service examines repair methods for the retaining walls around the bridge to avoid the potential for the bridge to be eroded by water flow. Through the active participation of community members and the implementation of appropriate construction techniques, the results of this collaboration show that the retaining walls around the bridge have been successfully repaired, as well as increasing their resistance to water pressure and erosion. The success of this community service not only improves the quality of life of local residents by ensuring sustainable connectivity, but also empowers communities in efforts to preserve their vital infrastructure. This community service can be an inspiring example for similar efforts in similar housing complexes that face similar challenges in maintaining important infrastructure such as bridges. This underlines the important role of community service in maintaining infrastructure as a key aspect in sustainable development in urban housing.
OPTIMALISASI PEMANFAATAN LIMBAH ABUTA (ABU SEKAM PADI, DAN SERBUK BATA) SEBAGAI SUBTITUSI SEMEN PADA CAMPURAN BETON RAMAH LINGKUNGAN Wicaksono, Teguh Mulyo; Mukhlisin, Muhammad; Fatmawati, Leily; Rahmawati, Roselina; Supriyadi, Supriyadi; Sukoyo, Sukoyo; Sudarmono, Sudarmono; Herlambang, Fajar Surya; Anastasya, Frida
Bangun Rekaprima Vol. 10 No. 1 (2024): April 2024
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v10i1.5681

Abstract

Construction prioritizes the strength of concrete without thinking about the negative impact on the environment. The cement industry is estimated to contribute 5-7% of CO2 gas emissions in the world. On the other hand, Indonesia is also faced with environmental problems caused by various industrial waste. From this problem an innovation emerged, namely ABUTA (husk ash and brick ash). The aim of this innovation is to create a concrete innovation using Abuta Waste (Rice Husk Ash, and Brick Powder). For the manufacture of economical, environmentally friendly concrete to reduce the negative impacts caused by excessive use of cement and reduce industrial waste in Indonesia. In writing this proposal the author used the experimental writing method and data collection method. The concrete innovation applied is concrete with a mixture of variations in the composition of rice husk ash powder and red brick powder of 10% of the cement composition in conventional concrete so that it is more economical and environmentally friendly. In this study, the ACI (American Concrete Institute) mix design method was used with the required design quality of 30 MPa. It is hoped that this innovation can become an environmentally friendly concrete innovation to reduce the negative impacts of excessive cement use and reduce industrial waste in Indonesia. Based on the mix design, the proportion of ash mixture (rice husk ash and brick powder) is 1:1. Meanwhile, the ratio of the amount of ash mixture to cement is 10%: 90%. The compressive strength of concrete with a 0% Abuta mix variation (7 days old) was 19.5, while the concrete innovation with a 10% Abuta mix variation (7 days old) was 15.70 Mpa. This means that the 10% mixture reduces the compressive strength value by 46.28% below the 0% abuta mixture variation. Using a mixture of 10% ash (rice husk ash and brick powder) in innovative concrete can reduce production costs by IDR. 76,700/m ³. Based on the materials obtained in this manufacture, it can be concluded that to obtain optimal compressive strength, better quality materials are needed. The application of concrete can be applied in casting work floors and non-structural construction work such as buildings that require general load power such as housing, sculpture, home interiors and others.
PENGENALAN DAN PELATIHAN PENGAMBILAN SAMPEL TANAH DISTURBED DAN UNDISTURBED UNTUK SISWA SMK 7 BIDANG KEAHLIAN KONSTRUKSI JALAN, IRIGASI, DAN JEMBATAN Sulistiawati, Baiq Heny; Harprastanti, Primasiwi; Fatmawati, Leily; Suwarno, Anung; Setyono, Karnawan Joko; Wahyumi, Puji; Sudarmono, Sudarmono; Mahmudi, Wildana Latif
Bangun Rekaprima Vol. 9 No. 2 (2023): Oktober 2023
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v9i2.5221

Abstract

One of the challenges faced by students from SMK is the learning atmosphere and learning system applied by PTV. This is due to the gap between the SMK curriculum and PTV. State Vocational High School (SMKN) 7 Semarang is one of the vocational schools located in the city of Semarang. SMKN 7 Semarang has 8 expertise competencies, one of which is competence in the field of civil engineering, namely Building Construction, Sanitation and Maintenance (KGSP) and Road, Irrigation, and Bridge Construction (KJIJ). Students of SMKN 7 Semarang already have a basic understanding of civil engineering, but when they enter the PTV world, they still experience difficulties in several fields. Therefore, to bridge and fill the gap from the SMK curriculum to PTV, it is necessary to introduce and train related fields of civil engineering, one of which is field testing. Semarang State Polytechnic as one of the universities has competent human resources to provide solutions to these problems. The PKM team provided introduction and training on the use of hand drill and vane shear tools used for soil testing. The hand drill is used to take disturbed and undisturbed soil samples, while the shear vane is used to determine the shear condition of the soil. After conducting the introduction and training activities, students can better understand how to use the test equipment. In addition, students also understand better in analyzing soil data obtained from testing.
ANALISIS POTENSI ADMIXTURE JENIS PLASTISIZER ALAMI SEBAGAI BAHAN TAMBAH BETON TIPE SELF COMPACTING CONCRETE (SCC): ANALISIS POTENSI ADMIXTURE JENIS PLASTISIZER ALAMI SEBAGAI BAHAN TAMBAH BETON TIPE SELF COMPACTING CONCRETE (SCC) Wicaksono, Teguh Mulyo; Mukhlisin, Muhammad; Fatmawati, Leily; Rahmawati, Roselina
Bangun Rekaprima Vol. 11 No. 1 (2025): April 2025
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v11i1.6550

Abstract

Self-compacting concrete (SCC) is a type of concrete that has the ability to flow and consolidate itself without the need for vibration. The addictive substance for self-compacting concrete uses chemical plasticizers produced by concrete chemical companies. The nature of the plasticizer material is usually liquid and thick which is used to thin the mixture and increase the workability of the concrete. The research began by creating a mix design including preparation of the need for natural additives. Testing the thinness of the concrete mix can be carried out using a flow test or fresh concrete spread test, where SCC meton meets the criteria if it gets a minimum spread test diameter of 50 cm. Some natural materials that are thick in nature include aloe vera sap, egg white, snail mucus and others. Tests using plasticizer fabricated products from Sika Viscocrete 3000 had the highest Flow values ​​for SCC concrete, followed by Sugar Solution, Allovera, Egg White and Snail Liquid. The results of successive cylindrical concrete compression tests produced average strengths ranging from Sika Viscocrete 23.6 Mpa, Allovera 14.23 Mpa, Snail 13.75 Mpa, Egg White 11.0 Mpa, and Sugar 3.1 Mpa. Fabricated plasticizers have very good results as additional materials for Self Compacting Concrete type concrete, while the natural material that still has potential in terms of flow is sugar solution, while in terms of compressive strength it is allovera.
Co-Authors Anastasya, Frida Anggraeni, Tetty Anung Suwarno, Anung Ariyanto, Arief Subakti Fajar Surya Herlambang Fitri, Duha Nur H, M. Luqmanul Hadi, Tjokro Harprastanti, Primasiwi Isnubroto, Danang Joko, Karnawan Julianto, Wijil Dwi Megantoro, Alam Muhammad Mukhlisin Mukhlisin, M Mukhlisin, M. Mulyono, Tedjo Pangesti, Rendy Dwi Parhadi Parhadi, Parhadi Priono, Timotius Argo Prasetya Puji Wahyumi, Puji Roselina Rahmawati S, Sri Wahyuningsih Septrianto, Wijaya Setioko, Rafi Setyono, Karnawan Joko Stefanus Santosa SUDARMONO SUDARMONO Sukoyo Sukoyo Sulistiawati, Baiq Heny Suparman Suparman Supriyadi Supriyadi Supriyo Supriyo Triwardaya Triwardaya, Triwardaya Vemi Widoanindyawati W, Herry Ludiro Warsiti Warsiti Wasino Wasino Wicaksono, Teguh Mulyo Wildana Latif Mahmudi, Wildana Latif Yustinus Eka Wiyana, Yustinus Eka Zakiya, Maharani Nur