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All Journal Sinergi Semesta Teknika Rang Teknik Journal Ensiklopedia of Journal Ensiklopedia Social Review Jurnal Abdimas ADPI Sains dan Teknologi Ensiklopedia Research and Community Service Review
Asiya Nurhasanah Habirun
Universitas Muhammadiyah Sumatera Barat
Arts Humanities Astronomy Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences Other

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ANALISIS KINERJA SIMPANG TIGA TAK BERSINYAL (STUDI KASUS JALAN SUDIRMAN – R A KARTINI PAYAKUMBUH UTARA) Azmi, Rifki; Gusmulyani, Gusmulyani; Nurhasanah Habirun, Asiya
Ensiklopedia Research and Community Service Review Vol 3, No 3 (2024): Vol. 3 No. 3 Juni 2024
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/err.v3i3.2528

Abstract

Road intersections are places where traffic flows from two or more roads meet. Road network performance must take into account the delay due to intersections, both signal intersections and barriers, the high population of vehicles that are not matched by the availability of adequate infrastructure of the road. Analyzing the capacity and performance level of an unsignalized deviation is data from the field, in the form of geometric intersection data (width of each intersection leg), the equivalence number of each vehicle, so that uniformity in the car is obtained passenger (SMP). Then the capacity and level of intersection performance are calculated, which includes the degree of saturation, and the deviation delay with the Indonesian Road Capacity Manual method (MKJI 1997). The results of the analysis obtained, the capacity value (C) of the three observation days, the biggest value is 2362,626cu/hour, the degree of saturation (DS) is 0.566 sec/smp, and delay (D) deviation of 10,831sec / smp. Then obtained the level of service at the intersection of Jl. Sudirman – Jl.R.A. Kartini north Payakumbuh is still able to accommodate traffic volume, because the degree of saturation is still small and the level of delay assessment is still in criteria B, so there is no need to recalculate the unsigned intersection Jl. Sudirman – Jl. R.A. Kartini north Payakumbuh. Keywords : Unsignalized intersections, road performance, side barriers, intersections
ANALISIS X-RAY DIFFRACTION (XRD) TERHADAP VARIASI CAMPURAN ABU VULKANIK DAN SEMEN SEBAGAI BAHAN PEMBENTUK BETON Hafiza, Jana; Habirun, Asiya Nurhasanah; Zulhedi, Zulhedi; Kurniawan, Deddy
Ensiklopedia of Journal Vol 6, No 4 (2024): Vol. 6 No. 4 Edisi 1 Juli 2024
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/eoj.v6i4.2426

Abstract

Volcanic ash contains mineral chemical elements such as Aluminum (Al), Silica (Si), Iron (Fe), Calcium (Ca), and Magnesium (Mg) which have bonding force when mixed with cement. This research aims to look at the presentation of the use of volcanic ash as a concrete construction material. The volcanic ash used was obtained from the eruption of Mount Marapi, West Sumatra, which was then mixed with Portland cement with a composition of mixing volcanic ash and cement 10% + 90%, 20% + 80%, and 30% + 70%, those characteristics were then seen based on spectrometric analysis. X-ray Diffraction (XRD). Based on the XRD test results, it can be seen that the volcanic ash from Mount Marapi, West Sumatra, has a composition of silica (SiO2) and alumina (Al2O3) which is proven to have pozzolanic properties. From the three mixtures, it can be seen that the highest XRD’s peak is quartz because of the high content of silica and oxide. These three mixing variables have been proven to be used as the basis for mixing for concrete formation. Keywords: Volcanic Ash, Mixing, Cement,  XRD
Evaluation and Strengthening Recommendations of Rectorate Building Muhammadiyah University of Sumatra Barat Due to Earthquake Habirun, Asiya Nurhasanah; Kurniawan, Deddy; Ad'ha, Muhammad Fajri
Semesta Teknika Vol 27, No 1 (2024): MEI
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/st.v27i1.20088

Abstract

The UM Sumbar Rectorate building suffered structural damage after 33 years. During service life, earthquakes have frequently occurred, the largest was 7.6 magnitude earthquake 2009 in Padang. The structural components have never been handled. This study aims to identify the existing condition as a basis for handling structural damage. Research activities are structure inspection, structural analysis, and determining structural improvements. The building has been deflected by 1° (± 10cm). The majority of structural elements are cracked due to overcapacity. Based on ATC 40 pushover analysis results, it found that 10 steps on x-direction and 11 steps on y-direction of push loads on the structure until it collapsed. Structure performance level is Life Safety, which is in a plastic condition. Strengthening are suggested to increasing column, building ductility, and implementing a dilation system. Evaluation the foundation structure and soil investigation are necessary before planning the strengthening.
ANALISA PENGARUH DILATASI DENGAN BALOK KANTILEVER TERHADAP STRUKTUR GEDUNG KANTOR 2 LANTAI Amami, Luthfia; Masril, Masril; Habirun, Asiya Nurhasanah
Ensiklopedia Sosial Review Vol 5, No 3 (2023): Volume 5 No 3 Oktober 2023
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/esr.v5i3.2373

Abstract

Indonesia is an area that is on the path of the most active earthquakes in the world because it is on the Pacific Ring of Fire. From a tectonically active perspective, Indonesia has a great chance of having a large potential earthquake at this time or someday. The movement of tectonic plates causes the earth's surface to sway so that buildings standing above the earth's surface experience physical damage and can even threaten human life. So to prevent horizontal displacement of the building structure, it must be dilated in order to reduce the irregularity of the building. Analysis of linear buildings where buildings are located in areas with high earthquake risk, namely Payakumbuh City, West Sumatra. The analysis aims to determine the behavior of the dilated structure so that the horizontal displacement of the building which results in collisions between buildings can be known, the effective dilation distance is used. Analysis was carried out on 4 structural models where the first model is a structure that uses dilation, models two and three are separations of intact buildings each of which is given cantilever beam dilation, and the fourth model is a structure without using dilation. To make it easier to calculate the expected parameters, the analysis is assisted by a structural analysis program, namely SAP 2000 version 14. The earthquake data used refers to the Payakumbuh City Response Spectrum data.
Engineering properties of seawater-mixed mortar with batching plant residual waste as aggregate replacement Astuti, Pinta; Pramana, Alfido Adhi; Rafdinal, Rahmita Sari; Purnama, Adhitya Yoga; Arifan, Rusdi Sahla; Monika, Fanny; Habirun, Asiya Nurhasanah
SINERGI Vol 28, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2024.2.017

Abstract

This research showcased the use of leftover trash as a substitute for aggregate in mortar combined with saltwater. The raw waste materials underwent analysis using X-ray fluorescence (XRF) in order to determine the component materials and crystalline phases present. The choice of Portland composite cement (PCC) was made because of its durability in a hostile environment. Seawater is used to combat the water crisis and prevent corrosion, thanks to its exceptional resistance to corrosion. The attributes of mortar were assessed in terms of its fresh characteristics (slump and flow table) as well as its mechanical properties (compressive strength, split tensile strength, flexural strength, density, and shrinkage). The findings indicate that the dried mortar waste is suitable as a patch repair material for a substrate with a strength of 20 MPa, but only when utilized in a maximum quantity of 20% and with a water-to-cement ratio of 0.3. The repaired concrete with a strength of 25 MPa did not need any waste containment and had a maximum water-to-cement ratio (W/C) of 0.3, whether combined with saltwater or tap water. The possible role of the mortar containing the dried waste was to be the species for brick and other non-structural. Additionally, the use of an alternative cementitious substance is suggested to enhance the effectiveness of the patch repair material, particularly when paired with cathodic corrosion protection in damaged concrete
Investigation of mechanical properties and microstructural characteristics of rice husk ash-based geopolymer mortar as patch repair Astuti, Pinta; Isnaini, Muhammad Sakti; Sasmita, Devi; Purnama, Adhitya Yoga; Habirun, Asiya Nurhasanah; Zulkarnain, Anisa; Nouvaldi, Angga Jordi; Monika, Fanny
SINERGI Vol 29, No 2 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2025.2.009

Abstract

The rapid expansion of the construction sector has escalated cement use, significantly impacting the environment due to CO2 emissions. Geopolymers are eco-friendly construction materials designed to reduce cement use and have the potential to be a patching material to rehabilitate concrete structures due to corrosion damage. Among these, pozzolanic materials like rice husk ash, rich in aluminosilicate, are abundant and suitable for geopolymer binders. This study explored the use of rice husk ash and alkali activators (NaOH/Na2SiO3), with different activator percentages (40%, 45%, and 50%), to evaluate their mechanical properties and potential applications as patch repair materials. This research involved formulating an optimal mix design through trial and error in a laboratory setting, followed by curing at 70 °C and testing at room temperature. XRF and SEM-EXD analyses were performed to determine the chemical composition and microstructure of the specimens. The activators, NaOH and Na2SiO3, were employed in a 1:3.5 ratio, with 14M molarity and 2% superplasticizer, to enhance workability. The test yielded the geopolymer mortar’s highest compressive strength of 8.14 MPa at a 40% activator variation. In comparison, the highest split tensile and flexural strengths were 2.50 MPa and 1.00 MPa, respectively, both at a 50% variation. These findings demonstrated the suitability of the mortar for patch repair on concrete substrates with compressive strengths below 8 MPa. The mechanical properties of the rice husk ash geopolymer mortar were influenced by the silica, calcium, and alkali activator content, affecting the mortar’s strength and density.
Co-Authors Ad'ha, Muhammad Fajri Afif Pratama Alexander, Joni Amami, Luthfia Ana Susanti Yusman Arifan, Rusdi Sahla Astuti, Pinta Azmi, Rifki Bastian, Elfiani Benny Viske Deddy Kurniawan Elfania Bastian Fauziah, Rahmadina Febrimen Herista Gusmulyani Hafiza, Jana Isnaini, Muhammad Sakti Juita Sari Masril Masril Masril Masril Monika, Fanny Nouvaldi, Angga Jordi Noviani Chandra, Indah Pramana, Alfido Adhi Purnama, Adhitya Yoga Rafdinal, Rahmita Sari Renggita Octiani Safitri S.T., M.T., Deddy Kurniawan, Sasmita, Devi Sumpena, Harri Zulhedi, Zulhedi Zulkarnain, Anisa