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All Journal Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil BANGUN REKAPRIMA
Rabinah, Aiun Hayatu
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Humanities Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Engineering Transportation Other

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PEMODELAN DIMENSI SAMPEL UNTUK MENENTUKAN PARAMETER DESAIN MENGGUNAKAN UJI TRIAKSIAL PADA TANAH LEMPUNG Rabinah, Aiun Hayatu; Pamungkas, Nur Setiaji; Suparman, Suparman; Satriyadi, Lilik; Warsiti, Warsiti; Bulan, Yosua Daniel; Affani, Chelsea Dhiya
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 28, No 1 (2023): Wahana Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v28i1.4568

Abstract

Test selection is very influential in determining the design parameters. The aim of this research is to study the dimensions of the triaxial test soil sample on clay soils in the Semarang area to obtain soil shear parameters that can be used as design parameters. The tests include testing the physical and mechanical properties of the soil. Mechanical testing uses a triaxial test. The UU triaxial test sample is modeled with a diameter of 3.5 cm and 3.8 cm, while the CU sample is 3.5 cm. Based on the results of soil property index testing, sieve analysis, and consistency limits, it can be concluded that the soil samples are non-organic clay with high plasticity. Based on the triaxial test UU values of c and υ it can be seen that the largest shear parameter occurs in the specimen with a diameter of 3.8 cm. The largest UU triaxial test c value is 0.32 kg/cm2 , meanwhile, for υ it has a value of 11.65 º. The specimen with a larger diameter has a greater shear stress value. This can be influenced by larger c and υ values. The c and c' values of the triaxial CU test results were 0.32 kg/cm2 and 0.50 kg/cm2 respectively. While the values of υ and υ' are 9.89 º and 17.35 º respectively. The τ and τ' values obtained were 1,394 kg/cm2 and 1,405 kg/cm2 , respectively. The modulus of elasticity of soil is 1500 kN/m2 and 3200 kN/m2 respectively which is included in the type of soft clay soil with a value range of 1800 – 3500 kN/m2 and is included in the CH classification with a range of 0.35–4 MPa. The value of the elastic modulus taking into account the value of cohesion, plasticity index, and OCR is closer to the prediction of soil elastic modulus values by Das
OPTIMALISASI ENZIM UREASE UNTUK MENINGKATKAN KAPASITAS DUKUNG TANAH LUNAK Suparman, Suparman; Rabinah, Aiun Hayatu; Satriyadi, Lilik; Sudarmono, Sudarmono; Warsiti, Warsiti
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol 29, No 1 (2024): Wahana Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v29i1.5659

Abstract

The main problems with soft clay soil are high water content, low soil mineral content, and high compressibility, so stabilization materials are needed that can increase the bearing capacity of soft soil. In this research, the urease enzyme was used as a catalyst to increase the bearing capacity of the soil. The material used is organic material, namely soybean powder. The stabilization materials used are urea (CH₄N₂O), calcium chloride (CaCl2), and soybean powder (urease enzyme), which will form a lime compound so that it functions as a catalyst for adhesive in stabilizing soft soil. This research aims to improve soft soil by stabilizing it using the SICP (Soybean Induced Calcite Precipitation) method. The variations in urea and CaCl2 concentrations used were 1 mol/L, 2 mol/L, 3 mol/L, 4 mol/L, and 5 mol/L. The soybean extract concentrate used was 30% with a curing time of 7 days. The most optimal test result and what is used is 3 mol/L. This is in line with the SEM and XRD test results. Test specimens were made and cured for 7, 14, 21, and 28 days and then tested for unconfined compressive strength (UCS) to determine the effect of adding calcium carbonat on soil strength. The UCS test shows that the optimum shear strength value of soil cemented with calcium carbonat is produced in a curring period of 14 days is 1.02 kg/cm2. Meanwhile, for a curring period of more than 14 days, the increase in the unconfined compressive strength value is relatively very small. The increase in soil compressive strength after stabilization was 30.77%. The compressive strength value of the soil increases due to the presence of calcium carbonat formed between the soil grains.
PENGENALAN DAN PELATIHAN UJI TANAH DI LAPANGAN UNTUK SISWA BIDANG KEAHLIAN KONSTRUKSI JALAN, IRIGASI, DAN JEMBATAN SMKN 7 SEMARANG Goro, Garup Lambang; Rabinah, Aiun Hayatu; Mahbub, Jamal; Risman, Risman; Warsiti, Warsiti; Mulyono, Tedjo; Ariyanto, Arief Subakti; Nurhadi, Imam; Satriyadi, Lilik
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.v9i2.5142

Abstract

Salah satu tantangan yang dihadapi mahasiswa yang berasal dari SMKN 7 Semarang adalah suasana pembelajaran dan sistem pembelajaran yang diterapkan PTV. Hal ini disebabkan karena adanya celah antara kurikulum SMK dengan PTV. Siswa SMKN 7 Semarang sudah memiliki pemahaman dasar terkait kompetensi bidang teknik sipil, tetapi ketika memasuki dunia PTV masih mengalami kesulitan dalam beberapa bidang. Oleh karena itu untuk menjembatani dan mengisi celah dari kurikulum SMK ke PTV diperlukan pengenalan dan pelatihan terkait kompetensi bidang teknik sipil, salah satunya adalah kompetensi pengujian tanah di lapangan.Pelatihan yang dilakuakn adalah pelatihan uji sandcone dan DCP. Hasil dari pelatihan siswa SMKN 7 Semarangdapat memahami secara tepat cara pengujian di lapangan menggunakan alat sandcone dan DCP, juga cara analisis data hasil pengujian. Selain itu, kuisioner juga menanyakan terkait kemudahan bimbingan selama pelatihan, hasilnya adalah 91% siswa menyatakan bahwa dosen dan mahasiswa yang mendampingi memberikan bimbingan dan arahan dengan jelas sehingga mudah dipahami oleh siswa.
PENERAPAN SISTEM PEMERIKSAAN DAN PERBAIKAN RETAKAN PADA DINDING DI KELURAHAN PAKINTELAN KECAMATAN GUNUNGPATI KOTA SEMARANG Kusumastuti, Dianita Ratna; Marsudi, Marsudi; Goro, Garup Lambang; Santosa, Stefanus; Supriyo, Supriyo; Rabinah, Aiun Hayatu; Praharseno, Fikri; Abdillah, Rifqi Aulia; Sulaiman, Sriwahyuningsih
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.v10i1.5635

Abstract

Community service in the form of implementing a system for checking and repairing cracks in walls in Pakintelan Village, Gunungpati District, Semarang City aims to increase residents' knowledge regarding the problem of cracks in walls which are thought to be caused by ground movement. This activity starts from a site survey, equipment preparation, and training carried out with the correct procedures, ensuring the implementation of correct repair methods and according to standards. Based on the results of surveys and interviews with local residents, the cracks in the walls of houses that occurred at the Citra Pesona Pakintelan Housing Complex were caused by ground movements which caused non-uniform structural settlement and vibrations resulting from housing construction behind the service location. The service team and students provide guidance and assistance to stone masons and the surrounding community. There were 6 masons who took part in the training and several members of the local community. The repair method used to repair cracked walls is the stitching method.
PENERAPAN UJI TANAH DI LAPANGAN UNTUK SISWA SMKN 5 SURAKARTA PROGRAM KEAHLIAN TEKNIK KONSTRUKSI DAN PERUMAHAN Rabinah, Aiun Hayatu; Goro, Garup Lambang; Harprastanti, Primasiwi; Mahbub, Jamal; Risman, Risman; Warsiti, Warsiti; Mulyono, Tedjo; Wiyana, Yustinus Eka; Nurhadi, Imam; Satriyadi, Lilik
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.v10i1.5494

Abstract

SMKN 5 Surakarta students encountered a challenge during the initial assessment of the civil construction implementation, particularly concerning field soil testing. This challenge was exacerbated by the absence of soil mechanics courses in the curriculum. While the students possessed a fundamental grasp of civil engineering competencies, they faced difficulties in various aspects, with field soil testing being a notable area of concern. To address these competency gaps and enhance the vocational school curriculum, training sessions were conducted to educate students on the practical application of soil tests in the field. The specific training covered sand cone and DCP tests. According to the questionnaire results, post-training, over 50% of SMKN 5 Surakarta students exhibited a clear understanding of how to perform field tests using DCP, Sand Cone, and Speedy Moisture test equipment, along with the ability to analyze the resulting test data. The effectiveness of direct training and intensive mentoring was evident in facilitating students' comprehension of the provided material. Notably, 90% of the students affirmed that the training was easily comprehensible.
PENGEMBANGAN PROTOTIPE ALAT UJI PERMEABILITAS BETON BERPORI UNTUK MENENTUKAN KOEFISIEN PERMEABILITAS Rabinah, Aiun Hayatu; Jamal Mahbub; Suparman; Lilik Satriyadi; Parhadi; Bimawijaya Laia
Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Vol. 30 No. 1 (2025): Wahana Teknik Sipil
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/wahanats.v30i1.6481

Abstract

The increasing growth of infrastructure and building development has led to a reduction in land surface cover. The lack of surface cover significantly impacts the environment, such as causing severe flooding. To address water-related issues, one approach is to manage runoff at its source through Low Impact Development (LID) strategies, such as permeable pavements. One method used to infiltrate water is porous concrete. Key parameters of porous concrete include strength, water-cement ratio, porosity, and permeability coefficient. The permeability coefficient of porous concrete is obtained through permeability testing. Laboratory permeability tests are more commonly used than field-testing. Therefore, it is important to have a dedicated tool for testing the permeability of porous concrete. The first stage involves the development and testing of a prototype, which includes prototype design, material survey, material procurement, equipment preparation, prototype construction, and testing. The prototype development refers to the ACI 522R-10 standard. The results of the prototype testing are analyzed using Darcy’s law to determine the permeability coefficient and analyze the flow characteristics. Based on the research findings, the permeability test prototype for porous concrete can be used as a testing tool for porous concrete permeability both in laboratory and field settings. The prototype exhibits laminar flow, thus allowing Darcy’s law to be applied for evaluating hydraulic conductivity.
Co-Authors Affani, Chelsea Dhiya Ariyanto, Arief Subakti Bimawijaya Laia Bulan, Yosua Daniel Dianita Ratna Kusumastuti Goro, Garup Lambang Harprastanti, Primasiwi Jamal Mahbub Lilik Satriyadi Lilik Satriyadi, Lilik Mahbub, Jamal Marsudi Marsudi Mulyono, Tedjo Nur Setiaji Pamungkas, Nur Setiaji Nurhadi, Imam Parhadi Praharseno, Fikri Rifqi Aulia Abdillah, Rifqi Aulia Risman Risman Stefanus Santosa SUDARMONO SUDARMONO Sulaiman, Sriwahyuningsih Suparman Suparman Suparman Supriyo Supriyo Warsiti Warsiti Yustinus Eka Wiyana, Yustinus Eka