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All Journal Paduraksa : Jurnal Teknik Sipil Universitas Warmadewa Jurnal Ilmiah MITSU (Media Informasi Teknik Sipil Universitas Wiraraja) Proceedings ACES (Annual Civil Engineering Seminar) Wahana Teknik Sipil: Jurnal Pengembangan Teknik Sipil Jurnal Teknik RACIC : Rab Construction Research The Jurnal Arsip Rekayasa Sipil dan Perencanaan (Journal of Archive in Civil Engineering and Planning) Dinamisia: Jurnal Pengabdian Kepada Masyarakat SIKLUS: Jurnal Teknik Sipil Eksakta : Berkala Ilmiah Bidang MIPA Inersia : Jurnal Teknik Sipil JURNAL TEKNIK SIPIL UNAYA Mattawang: Jurnal Pengabdian Masyarakat Matriks Teknik Sipil Journal of Infrastructure and Civil Engineering SAINSTEK Fleksibel: Jurnal Pengabdian Kepada Masyarakat JURNAL KARYA ILMIAH MULTIDISIPLIN Dharma: Jurnal Pengabdian Masyarakat BISMA: Bimbingan Swadaya Masyarakat General Engineering & Applied Science Journal (GEAR)
Fitridawati Soehardi, Fitridawati
Program Studi Teknik Sipil, Fakultas Teknik, Universitas Lancang Kuning, Riau, Indonesia
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Evaluasi Akurasi Data Curah Hujan Satelit IMERG NASA Terhadap Data Observasi BMKG di Stasiun Sultan Syarif Kasim II Pekanbaru Periode 2009–2024 Marlaily Idris; Hendri Rahmat; Virgo Trisep Haris; Fitridawati Soehardi
SAINSTEK Vol. 14 No. 1 (2026)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/js.v14i1.422

Abstract

Penelitian ini bertujuan untuk mengevaluasi akurasi data curah hujan satelit Integrated Multi-satellitE Retrievals for GPM (IMERG) dari NASA terhadap data observasi curah hujan dari Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) di Provinsi Riau. Data yang digunakan mencakup periode tahun 2009–2024. Analisis dilakukan dengan menghitung selisih antara kedua data, Root Mean Square Error (RMSE), Nash–Sutcliffe Efficiency (NSE), dan koefisien korelasi (r). Hasil penelitian menunjukkan bahwa nilai RMSE sebesar 53,458 mm/tahun, nilai NSE sebesar 0,918, dan korelasi (r) sebesar 0,633. Hasil ini mengindikasikan bahwa IMERG memiliki efisiensi yang sangat baik namun korelasi yang sedang dalam merepresentasikan curah hujan di Provinsi Riau. Oleh karena itu, diperlukan koreksi atau kalibrasi lokal sebelum data IMERG digunakan secara langsung dalam analisis hidrologi atau perencanaan sumber daya air di wilayah ini.
IDENTIFIKASI JENIS-JENIS KERUSAKAN JALAN (PERKERASAN LENTUR) STUDI KASUS JALAN LINTAS TALUK KUANTAN – BATAS PROVINSI SUMATERA BARAT fitridawati soehardi; Toyip Setiawan; Winayati Winayati
Racic : Rab Construction Research Vol. 6 No. 1 (2021): Juni
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v6i1.1577

Abstract

Taluk Kuantan road - the boundary of West Sumatra Province is one of the alternative roads that can connect three provinces, namely Riau Province, West Sumatra Province and Jambi Province. This road is a national road (middle alley) with a high number of LHR, causing damage to the road body. This study aims to assess the level of damage to the flexible pavement layer to determine the type and level of damage that occurred and determine the appropriate type of treatment. The method used is the Asphalt Institute method, to determine the road pavement condition rating (PCR). The types of damage contained in this road include Ambles 2.303%, slurry 1.499%, longitudinal crack 0.395%, crocodile skin crack 0.312%, beam crack 0.297%, curved crack 0.149%, edge crack 1.379%, loose grain 0.120%, obesity 0.043 %, wear / slippery aggregate 2,397%, exfoliated 0.126%, holes 0.030%. The percentage of total road damage along the research location is 9.05%, the index value of road damage conditions according to the Asphalt Institute method is 90.95%. So that routine maintenance is needed such as filling cracks, closing holes (patching)
PENGGUNAAN EGG SHELL POWDER (ESP) DAN SUGARCANE PULP ASH (SPA) SEBAGAI BAHAN STABILISASI TERHADAP KUAT DUKUNG TANAH LEMPUNG Fitridawati Soehardi; Marta Dinata
Racic : Rab Construction Research Vol. 8 No. 1 (2023): JUNI
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v8i1.2919

Abstract

Repairs to clay soils generally use stabilization methods to improve the properties of clay soils with additional materials mixed in the original clay soil to increase the soil bearing strength according to technical specifications in building construction. Egg Shell Powder (ESP) is a waste product from households and home industries with a high enough calcium carbonate (CaCO3) content to fill the holes between the pores and glue the soil particles together. Meanwhile, Sugarcane Pulp Ash (SPA) is one of the wastes from household products and sugarcane processing that is not utilized by the surrounding community to reduce environmental pollution. The research method used in this study was laboratory testing of the water content, specific gravity, and CBR values ​​of the addition of ESP and SPA to clay with variations of 0%, 5%, 10%, and 15% and to the addition of 5% SPA. Results The original soil in this study was included in the CL soil classification, namely non-organic clay with low to moderate plasticity. The optimum water content value tends to decrease along with the addition of ESP and SPA to the original soil, namely the variation of ESP 15% and SPA, which is 19%, and the specific gravity value increases by 1,71 gg/cc. The CBR value increased with the addition of 15% ESP and 5% SPA, which was 9,23%.
KUAT GESER TANAH LEMPUNG DENGAN VARIASI PENAMBAHAN LIMBAH BETON fitridawati soehardi; Marta Dinata; Yoan De Nanda Herru; Junaidi
Racic : Rab Construction Research Vol. 10 No. 1 (2025): JUNI 2025
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v10i1.5086

Abstract

Clay soil tends to expand when wet and contract when dry, which can cause cracks in the soil or damage to the building structure above it if not handled properly. One effort that can be carried out is chemical stabilization using both conventional stabilization materials and the use of alternative stabilization materials, both organic and inorganic. The aim of this research is to increase the shear strength of the soil by adding varying percentages of 5%, 10%, 15% and 20% of concrete waste. The method used is an experimental method in the laboratory using SNI 3420:2016 testing for shear strength. The research results show that there is an increase in cohesion values ​​and shear angles along with the addition of concrete waste. The highest increase was found in the percentage of 20% addition of concrete waste to the original soil, namely the cohesion value was 0.400 kg/cm2 and the shear angle value was 24.567 0.
PEMANFAATAN RECYCLED CONCRETE WASTE SEBAGAI ALTERNATIF BAHAN STABILISASI TANAH LEMPUNG UNTUK PENINGKATAN NILAI CALIFORNIA BEARING RATIO (CBR) Fitridawati Soehardi; Marta Dinata; Hendri Rahmat; Marlaily Idris; Junaidi Junaidi
Racic : Rab Construction Research Vol. 10 No. 2 (2025): DESEMBER
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/racic.v10i2.6916

Abstract

Clay soil has low bearing capacity and high plasticity, which requires stabilization efforts to improve its strength. This study aims to analyze the effectiveness of Recycled Concrete Waste (RCW) as an alternative stabilizing material in improving the California Bearing Ratio (CBR) value of clay soil. The research was conducted through a series of laboratory tests, including physical property analysis, Standard Proctor compaction tests, and CBR tests under RCW mixture variations of 0%, 5%, 10%, 15%, and 20%, both in unsoaked and soaked conditions. The results indicate that the Optimum Moisture Content (OMC) increased from 1.65% to 18.1%, while the Maximum Dry Density (MDD) decreased from 19.8 g/cm³ to 17 g/cm³, and slightly increased to 17.5 g/cm³ at 15% RCW content. The CBR value showed a significant improvement, increasing from 4.6% to 15% under unsoaked conditions and from 3.30% to 12.80% after soaking. It can be concluded that the optimum RCW content of 20% effectively enhances the soil’s bearing capacity and water resistance while offering an environmentally friendly solution for subgrade stabilization in road construction
Flow Characteristics in an Open Channel Flume Based on Bed Slope Variation at the Civil Engineering Laboratory of Universitas Lancang Kuning Marlaily Idris; Virgo Trisep Haris; Hendri Rahmat; Fitridawati Soehardi
Journal of Infrastructure and Civil Engineering Vol. 6 No. 2 (2026)
Publisher : Program Studi Teknik Sipil Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/jice.v6i2.168

Abstract

This study aims to analyze the effect of bed slope variation on flow characteristics in an open channel flume at the Civil Engineering Laboratory of Universitas Lancang Kuning. The research was conducted experimentally using a laboratory flume with constant discharge conditions. Three slope variations were applied, namely 0.001, 0.003, and 0.005. The observed parameters include flow velocity and flow depth. In addition, the Froude number was calculated to determine the type of flow regime. The results indicate that increasing the bed slope leads to an increase in flow velocity from 0.20 m/s to 0.33 m/s. Meanwhile, the flow depth tends to decrease as the slope increases. The calculated Froude number ranges from 0.201 to 0.343, indicating that the flow regime remains in subcritical conditions. These results provide empirical insight into the relationship between bed slope and hydraulic characteristics in open channel flow and can serve as reference data for hydraulic laboratory experiments.
Analysis of Heavy Equipment Productivity in Normalization and Embankment Work in Sei Berapit Indragiri Hilir Regency Doni Yudia Saputra; Zainuri Zainuri; Fitridawati Soehardi
Journal of Infrastructure and Civil Engineering Vol. 6 No. 1 (2026)
Publisher : Program Studi Teknik Sipil Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/jice.v6i1.164

Abstract

The 30% delay in construction progress on the Normalization and Embankment Construction project in Sei Berapit, Indragiri Hilir Regency, where as of the last week of November 2025 only 70% of the work had been completed, indicates that heavy equipment productivity has not met the planned target. This study aims to analyze the productivity of amphibious excavators and determine the effective number of equipment alternatives to accelerate project completion. The method used is a quantitative method with a case study approach, with productivity analysis based on work cycle time data, equipment efficiency, and actual production capacity from field observations. The analysis results show that in Alternative I, namely the use of two amphibious excavators, daily production capacity increased significantly to around 980,627 m³/day, so that the remaining work volume of 5,760.416 m³ could theoretically be completed in around 6 working days. This increase in productivity not only has an impact on accelerating the duration of implementation but also provides better operational flexibility in anticipating field disruptions. Compared to other equipment addition alternatives, Alternative I is considered the most rational because it reduces unproductive time, minimizes the risk of delays due to equipment damage or other operational disruptions, and remains within an acceptable daily operational cost level of IDR. 27,363,200. This finding confirms that productivity control and determining the number of amphibious excavators play a crucial role in time and cost management. Therefore, heavy equipment productivity evaluation should be conducted from the project planning stage, especially for excavation work in flooded terrain, to ensure optimal achievement of implementation targets.
ANALISA VARIASI SUHU DAN WAKTU PERAWATAN TERHADAP KUAT TEKAN BETON GEOPOLIMER Shanti Wahyuni Megasari; Fitridawati Soehardi
Matriks Teknik Sipil Vol 13, No 2 (2025): Desember
Publisher : Program Studi Teknik Sipil FT UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mateksi.v13i2.101885

Abstract

The increase in cement production has a negative impact on the environment, so innovation in the use of concrete adhesives is needed, one of which is by utilizing fly ash waste. In order to react to form polymer bonds, fly ash requires the addition of an activator solution in the form of Sodium Hydroxide (NaOH) and Sodium Silicate (Na2SiO3). At cold temperatures, the hydration process and initial strength of geopolymer concrete will have difficulty being achieved optimally. So additional heat with high temperatures is needed during curing to increase the compressive strength of geopolymer concrete. This study aims to analyze the temperature and curing time on the compressive strength of geopolymer concrete. The research method is an experimental study in the Laboratory with a ratio of aggregate: binder of 65%: 35%, coarse aggregate: fine aggregate of 60%: 40%, alkali: fly ash of 38%: 62%, NaOH: Na2SiO3 of 1: 2, superplasticizer 2%, and activator molarity 12 M. The variations in temperature and curing time used were at temperatures of 60 ℃ and 90 ℃ for 6 hours, 12 jams and 24 hours. Test objects in the form of cylinders measuring 200×100 mm as many as 18 samples. The test objects will be tested for compressive strength after 28 days. The results of the study obtained the highest compressive strength value at a variation of 90℃ for 24 hours of 17.92 MPa and the lowest compressive strength value at a variation of 60℃ for 6 hours of 10.19 MPa. Based on the results of the study, it was concluded that the higher the curing temperature and the longer the curing time can increase the compressive strength of geopolymer concrete. For further research, it is recommended to vary the curing temperature above 90℃, the curing time above 24 hours and reduce the amount of air in the concrete mixture. Keywords: compressive strength; curing time; fly ash; geopolymer concrete; temperature time
Model Edukasi Partisipatif Zona Selamat Sekolah untuk Penguatan Literasi dan Perilaku Keselamatan Lalu Lintas Siswa Fitridawati Soehardi; Hendri Rahmat; Marlaily Idris; Yohana Pinta uli Panjaitan; Rezky Aulia Ramadhani
Dharma: Jurnal Pengabdian Masyarakat Vol. 6 No. 2 (2026): Juni
Publisher : LPPPM STAI Darul Hikmah Bangkalan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35309/dharma.v6i2.657

Abstract

This community service program strengthened road safety literacy and safe behavior among school community members at Witama School, Pekanbaru, through a participatory School Safety Literacy Model based on the School Safety Zone. The program responded to the school need for practical traffic safety education, clearer understanding of signs and markings, safer crossing habits, and a simple school follow up mechanism. The model consisted of five connected components: risk mapping, traffic sign literacy, guided safe crossing practice, school commitment, and program continuity. Activities involved 95 students through coordination with the school, field observation, interactive education, group discussion, traffic sign simulation, safe crossing practice, reflection, and handover of educational outputs. The outputs received by the school included a road safety literacy module, traffic sign posters, a simple risk map around the school gate, a teacher monitoring checklist, presentation materials, and recommendations for pick up and drop off arrangement. A short pre and post activity quiz was used only as a learning reflection tool. The average score increased from 52.37 before the activity to 95.74 after the activity, showing improved understanding of School Safety Zone concepts, traffic signs, safe crossing steps, and school safety culture. The program also produced a sustainability plan through teacher supervision, repeated use of educational media, and routine reminders during school arrival and dismissal times. This program shows that community service in school traffic safety becomes more useful when it leaves practical tools, builds school participation, and creates a follow up mechanism after the activity ends
Flow Characteristics in an Open Channel Flume Based on Bed Slope Variation at the Civil Engineering Laboratory of Universitas Lancang Kuning Marlaily Idris; Virgo Trisep Haris; Hendri Rahmat; Fitridawati Soehardi
Journal of Infrastructure and Civil Engineering Vol. 6 No. 2 (2026)
Publisher : Program Studi Teknik Sipil Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/jice.v6i2.168

Abstract

This study aims to analyze the effect of bed slope variation on flow characteristics in an open channel flume at the Civil Engineering Laboratory of Universitas Lancang Kuning. The research was conducted experimentally using a laboratory flume with constant discharge conditions. Three slope variations were applied, namely 0.001, 0.003, and 0.005. The observed parameters include flow velocity and flow depth. In addition, the Froude number was calculated to determine the type of flow regime. The results indicate that increasing the bed slope leads to an increase in flow velocity from 0.20 m/s to 0.33 m/s. Meanwhile, the flow depth tends to decrease as the slope increases. The calculated Froude number ranges from 0.201 to 0.343, indicating that the flow regime remains in subcritical conditions. These results provide empirical insight into the relationship between bed slope and hydraulic characteristics in open channel flow and can serve as reference data for hydraulic laboratory experiments.
Co-Authors Abdul Hakam Afrialdi, Afrialdi Alfian Saleh, Alfian Anggraini, Muthia Ardiansyah, Rony Arhan Wanim, Arhan Armaisastrawati Armaisastrawati atmam atmam, atmam Dewi, Sri Hartati Dhanil Ramadhan Doni Yudia Saputra Dwi Putri, Lusi Dwi Vita Lestari Soehardi Elizar Elizar, Elizar Erdin Khalid Zulfi Erdin Fadrizal Lubis Harry Pratama Fatmirozia Hendri Rahmat Hendri Rahmat, Hendri Ikhlas Zai Juliper Marpaung Junaidi Junaidi Junaidi Lidya Birahmatika Lubis, Sautma Forman Pangihutan Lusi Dwi Putri, Lusi Dwi M. Yusuf Septino Mahadi Kurniawan Maijuanda, Shinta Marlaily Idris Marta Dinata Marta Dinata Marta Dinata Mas Mera Muhaimin - MUHIBBAN, MUHIBBAN Panjaitan, Yohana Pinta Uli Putri*, Lusi Dwi Rahmadhany, Rezky Aulia Rendy Thamrin Repi Repi Retno, Deddy Purnomo Rezky Aulia Ramadhani Risenal Nick Safdivah, Yohanda Sari, Yusra Aulia Shanti Wahyuni Megasari Sitompul, Dedy Srihandayani, Susy Sugeng Wiyono Taufiquraahman Toyip Setiawan Virgo Trisep Haris Virgo Trisep Haris, Virgo Trisep Winayati - Winayati Winayati Yoan De Nanda Herru Yohana Pinta uli Panjaitan Zainuri Zainuri Zainuri Zainuri Zainuri, Zainuri