Racic : Rab Construction Research 2023-12-24T13:54:47+07:00 Husnah [email protected] Open Journal Systems <p style="border: 2px dashed blue; padding: 4px; background-color: #d6e3f3; text-align: justify;">RACIC "Rab Construction Research" &nbsp;(p-ISSN 2527-7073 dan e-ISSN 2620-3170) adalah Jurnal yang dikelola oleh Program Studi Teknik Sipil, Fakultas Teknik Universitas Abdurrab, yang terbit secara berkala dalam dua edisi per tahun. RACIC menerima dan mendukung penuh artikel di bidang Teknik Sipil, tetapi tidak terbatas pada: Struktur, Transportasi, Sumber daya air, Manajemen Rekayasa Konstruksi, dan Geoteknik. <br><a href="" target="_blank" rel="noopener"><img src="" width="100%"></a></p> SIMULASI METODE BACK PROPAGATION DALAM ANALISIS KERUSAKAN RUAS JALAN LINTAS UTARA KOTA PEKANBARU 2023-12-24T13:54:46+07:00 Alfian Saleh [email protected] Muthia Anggraini [email protected] Roki Hardianto [email protected] <p><em>The Pekanbaru City North Cross Road is a national road connects the city of Pekanbaru with the northern border of Pekanbaru which is a causeway often damaged. So we need a system to predict the damage that occurs. This research method consists of data collection, data selection, the process using the backpropagation method, analysis, and evaluation. Based on the data obtained the most damage that occurs on this road segment is 60% cracking, 30% rutting damage, and 10% for potholes. Backpropagation are weight initiation, activation, calculating input weights, output bias, and changes in weight. In these stages, the output to be achieved is obtained with the smallest error approach.. The result is that the prediction of damage made there is an increase in the number of crack damage by about 3% with an MSE error value of 0.18535 with Matlab software</em></p> 2023-11-14T00:00:00+07:00 ##submission.copyrightStatement## EFEKTIVITAS RUMBLE STRIPS DALAM MEREDUKSI KECEPATAN ARUS LALU LINTAS DI JALAN LINGKUNGAN UNIVERSITAS RIAU 2023-12-24T13:54:46+07:00 Benny Hamdi Rhoma Putra [email protected] Edi Yusuf Adiman [email protected] M. Rilly A Yogi [email protected] Choryn Munadiyatul Haq [email protected] Elianora Elianora [email protected] <p><em>University of Riau (UNRI) Binawidya Campus, has approximately 700 hectares area which consist of 10 faculties. With good pavement conditions and the distance between faculties that are far apart, the characteristics of the speed of vehicles along UNRI Environmental Roads are high. High vehicle speed causes traffic safety problems, infact, increasing the probability of traffic accidents. One of the traffic engineering that has been applied to the UNRI Environmental Road is the installation of Rumble strips at many points on the campus Environment Road. The initial goal with the installation of this noise tape is to reduce vehicle operational speed (traffic calming) and reduce the possibility of accidents. </em><em>This study aims to analyze the effectiveness of rumble strips in reducing the speed of traffic flow on the environmental roads of the University of Riau, namely on Muchtar Lutfi Street, the road next to the Rectorate Mosque, and the road in front of Faperta. The method of data collection is through a survey of the average speed of motorcycles (MC) and light vehicles (LV). Comparative analysis of the decrease in vehicle speed when passing through rumble strips using the chi-square test. The results of the chi-square test showed that there was no significant change in the average speed of vehicles affected by rumble strips to reach the vehicle speed limit of 40 km/hour at the University of Riau.</em>&nbsp;<em>This phenomenon arises because the design of the rumblestrips is not in accordance with the Regulation of the Minister of Transportation of the Republic of Indonesia Number PM 82 of 2018 both in terms of number and dimensions. Recommendations that can be applied are to adjust to the design of the provisions, and complement the rublestrips with caution signs and emblems.</em></p> 2023-12-21T08:32:42+07:00 ##submission.copyrightStatement## PRESERVASI PERKERASAN LENTUR BERDASARKAN NILAI KONDISI JALAN MENGGUNAKAN METODE PCI DI JALAN SRIKANDI KOTA PEKANBARU 2023-12-24T13:54:46+07:00 Edi Yusuf Adiman [email protected] Rizqy Ridho Praksa [email protected] Ridwan Frestantio [email protected] Aulia Akbar Nadim [email protected] Ahmad Rilwanu Ribbiyuan [email protected] Khairul Amri [email protected] <p><em>Pavement preservation in urban areas can increase population mobility. So that the road maintenance treatments are not only concentrated on arterial roads. This research aims to determine the road conditions and preservation treatments of flexible pavement on one of the collector roads in Pekanbaru City, that's on Srikandi Street. Types of distress in flexible pavements were obtained by visual survey at the location.</em>&nbsp;<em>The road is divided into 12 sections, where each section is 200 meters apart. Pavement condition assessment method using the Pavement Condition Index (PCI). The results of the pavement condition assessment analysis, the PCI average on Srikandi Street is 72.75 (satisfactory). Pavement preservation activity required on Srikandi Street is routine maintenance on sections 1, 3, 4, 6, 7, 8, and 10, with the treatment by patching, leveling, crack sealing, and sealcoating; preventive maintenance on sections 2, 5, 9, and 11, with the treatment by nonstructural overlay using a Thin Hot Mix Asphalt (THMA); and pavement rehabilitation in section 12, with the treatment by mill and inlay.</em></p> 2023-11-14T00:00:00+07:00 ##submission.copyrightStatement## OPTIMALISASI STABILITAS PADA LAPIS ASPAL BETON DENGAN MENGGUNAKAN AGREGAT LIMBAH BETON 2023-12-24T13:54:46+07:00 Aldo Verdiawan [email protected] Andri Dwi Cahyono [email protected] Evita Fitrianis Hidiyati [email protected] Aldo Riki Saputra [email protected] Rizky Hary Anto [email protected] Anggik Fatkhurrokhman [email protected] Mochammad Munhamir [email protected] Muhammad Bagus Maulana [email protected] Rendy Kurnia Dewanta [email protected] <p><em>Concrete waste is waste material produced during the construction, renovation or demolition of concrete. The waste comes from residential areas that were evicted or demolished so that the airport land becomes sterile. The negative effects of the development, the large amount of concrete waste due to demolition and the absence of innovation in handling concrete waste. Therefore, utilizing concrete waste as a substitute for coarse aggregate in making marshal samples for asphalt road planning. so this research using materials from recycling rca concrete is very meaningful to determine which type of pavement to be used in the research. Therefore, to overcome these problems, the method used in this research is SNI 06- 2489- 1991 Procedures for Testing Asphalt Combinations with Marshall Equipment. By using RCA Waste coarse aggregate on the constituent materials of AC-BC concrete layer obtained an average stability result of 4843 kg. It is expected that these results are suitable for use as material to replace coarse aggregate on road pavements in accordance with the provisions of the 2018 bina marga specification.</em></p> 2023-11-16T13:27:10+07:00 ##submission.copyrightStatement## PLASTIK LOW-DENSITY POLYETHYLENE PADA CAMPURAN ASPAL AC-WC 2023-12-24T13:54:46+07:00 Sesep Fahmi Aminudin [email protected] Athaya Zhafirah [email protected] <p>The problem of environmental pollution due to the continuous increase in plastic over time is a problem that is being faced worldwide, especially in Indonesia. Plastic is trendy and used in everyday life. One effort to reduce the amount of plastic is to use it as an additive to asphalt mixtures. The plastic in the asphalt mixture is used to coat the aggregate. This study aimed to determine Marshall's characteristics due to adding LDPE (low-density polyethylene) plastic as a substitute for asphalt in the AC-WC mixture. The research was conducted using experimental methods in the laboratory. Various LDPE plastic mixtures used were 0%, 4%, and 6% by weight of asphalt. The results showed that the asphalt mixture added with 4% and 6% LDPE plastic could increase density, flow, VFB, and MQ values. However, for stability values, VIM and VMA asphalt mixtures without LDPE were smaller than asphalt mixtures with 4% and 6% LDPE.</p> 2023-11-14T20:09:47+07:00 ##submission.copyrightStatement## PENINGKATAN CBR DAN PENURUNAN POTENSI PENGEMBANGAN PADA TANAH DENGAN STABILISASI DIFA SOIL STABILIZER 2023-12-24T13:54:46+07:00 Nizar Firdaus [email protected] Athaya Zhafirah [email protected] <p>It is vital to know the bearing capacity of the soil prior to construction which can be determined from the CBR. CBR is an essential parameter in evaluating the soil bearing capacity. CBR increase can be done through stabilization. Stabilization is carried out chemically by adding an additive, a difa soil stabilizer, into the soil with a specific composition. This study aimed to determine the increase in CBR and decrease in swelling potential in soils added with DSS. The tests carried out were compaction and CBR-soaked conditions with immersion for four days. The composition of the difa soil stabilizer used in this study was 0%; 2.5%; 5%; and 7%. In addition to difa soil stabilizer, 8% cement is also added to the soil. The results obtained from this study were that adding 8% cement and 2.5% and 5% difa soil stabilizer increased the CBR value to 57%. In comparison, adding 8% and 7% difa soil stabilizer reduced the CBR value to 38%.</p> 2023-11-16T11:42:52+07:00 ##submission.copyrightStatement## RESPON RISIKO DAN MITIGASI RISIKO PADA FAKTOR-FAKTOR PENYEBAB WASTE KONSTRUKSI DENGAN MENGGUNAKAN PENDEKATAN LEAN CONSTRUCTION (STUDI KASUS: PROYEK X KAPUAS) 2023-12-24T13:54:46+07:00 Oryza Lhara Sari [email protected] Doni Rahman Maulana [email protected] <p><em>Waste is a problem that often occurs in construction projects. Waste is in the form of activities that utilize resources but do not produce the expected added value (value). Therefore, it is necessary to identify waste, in this research we identify the factors that cause construction waste in the rehabilitation project and improvement of irrigation networks in the working area of Block A, Kapuas Regency. Obtained 9 variables with 43 indicators of factors that cause waste which are the basis for this research. The method used is the severity index method to obtain the dominant and main factors causing waste. The results of this study are the dominant and main factors for the occurrence of waste, namely with codes A1, A6, B2, B3, B6, D4, E4, E6, F6, I12 with a moderate risk category, based on the severity index value, the dominant causative factor risk response is transfer.</em></p> 2023-11-24T20:01:26+07:00 ##submission.copyrightStatement## PASAR RAKYAT YANG MEMPENGARUHI KINERJA JALAN SETELAH PEKERJAAN PENGGANTIAN JEMBATAN RUAS JALAN 2023-12-24T13:54:46+07:00 Ranty - Christiana [email protected] Irvhaneil Irvhaneil [email protected] Syarifah Melly Maulina [email protected] <p><em>Puring market is located on riverside of the Kapuas river that operates 24 hours. The Ministry of Public Works and Public Housing in 2020 carried out the work to replace khatulistiwa road (Pontianak) and the completion of the work in 2021 was at the Puring &nbsp;market location, when the bridge work was carried out it was certain that there would be quite a high vehicle delay. It is necessary to review the side friction and road performance due to the Puring market activity after the bridge replacement work has been completed. The</em> <em>method used for this research is a descriptive quantitative method with data collection to determine side friction and road performance. Calculations will be made based on the Indonesian Road Capacity Manual (MKJI). </em><em>The results of the research show that road performance is close to saturation with the resulting value of DS = 0.74. This provides evidence that there is an impact by these market activities on the performance of the Pontianak Katulistiwa road after the operation of the new bridge. The side barrier survey indicates that the area is included in a commercial area with very high roadside activity.</em></p> 2023-11-16T14:34:02+07:00 ##submission.copyrightStatement## KINERJA RUAS JALAN CUT NYAK DIEN TERHADAP LEBAR PERKERASAAN JALAN 2023-12-24T13:54:46+07:00 Syafrizal Syafrizal [email protected] Muhammad Idham [email protected] <p>The cut nyak dien road in the city of Dumai is a provincial road that is often passed by CPO heavy transport vehicles and public transportation, On this road, traffic jams often occur due to disruption of CPO transport vehicles, where passing trucks cannot go because the roads are close to community areas, so trucks slow down, this affects the flow of traffic and the performance of these roads.</p> <p>For this reason, it is necessary to conduct studies related to the performance of road sections, so that problems that exist in the field can be controlled. The method used to analyze the performance of roads is using PKJI 2014.</p> <p>After the survey results were obtained and the analysis was carried out, the road capacity value was obtained, which was 2404 hours/hour and the highest exsisiting Degree of Saturation was obtained at 0.65, for DJ 5 and 10 years to come, it is known that the highest DJ is 0.77 and 1.03 so that it can be concluded that the s</p> <p>ervice level of the cut nyak dien road in the existing conditions is C indicating a stable flow, but the speed of the vehicle is controlled.</p> <p><strong>Kata kunci : </strong>Performance, Road Segment, Speed, LOS</p> 2023-12-22T23:50:12+07:00 ##submission.copyrightStatement## PENILAIAN KONSEP GREEN BUILDING PADA GEDUNG LABORATORIUM TERPADU INSTITUT TEKNOLOGI KALIMANTAN SESUAI STANDAR GREENSHIP 1.2 2023-12-24T13:54:46+07:00 Oryza Lhara Sari [email protected] Andika Ade Indra Saputra [email protected] Naila Anisa Dwigida Aprilla [email protected] <p><span style="font-weight: 400;">In the City of Balikpapan, the number of buildings that apply the green building concept and are certified according to the green building certification data still does not exist. Sustainable development at the Kalimantan Institute of Technology (ITK) is one of the largest in East Kalimantan. The development will have an impact on changes in environmental conditions. The application of the green building concept to the ITK building is expected to reduce the negative impact on environmental change. The focus of this research case study is the ITK Integrated Laboratory Building. The thing being reviewed is the application of green building in the ITK Integrated Laboratory building using the calculation parameters on Greenship for New Buildings Version 1.2. The method that will be used in this research is to evaluate the application of green building in the ITK Integrated Laboratory Building. The evaluation value of the application of green building in the ITK Integrated Laboratory building is 9.08 points or 8.99% which does not meet the requirements for implementing green building in accordance with the greenship 1.2 standard.</span></p> 2023-12-24T09:33:55+07:00 ##submission.copyrightStatement## EVALUASI KINERJA BUNDARAN BUNDA SRI MERSING MENGGUNAKAN MKJI 1997 DAN SOFTWARE PTV VISSIM 2023-12-24T13:54:46+07:00 Nur Ilman [email protected] Muhammad Idham [email protected] <p><em>The Bunda Sri Mersing Signal Roundabout is the roundabout which is the initial entrance to the City of Dumai and has the problem of increasing high traffic, and it is necessary to evaluate road performance so that the degree of saturation and impact can be identified. The research is based on the 1997 Indonesian Road Capacity Manual method and the model uses the PTV Vissim Application, data obtained from field survey results is needed. Based on the results of the analysis, it is known that the value of junior high school traffic flow/hour on the highest day is on Wednesday for weekdays, and Saturday for holidays, so that traffic performance is obtained in the existing conditions, 5 years and 10 years. from data processing using MKJI 1997 it is known that the Degree of Saturation and Level Of Service (LOS) on Jalan Bukit Datuk in the Existing conditions and conditions of 5 years are safe, and in conditions of 10 years DJ and Level Of Service (LOS) have problems with the degree of saturation of 0,85.</em></p> 2023-12-24T06:29:09+07:00 ##submission.copyrightStatement## ANALISIS TINGKAT KERUSAKAN JALAN PADA JALAN RAYA BYPASS KRIAN KABUPATEN SIDOARJO DENGAN METODE PAVEMENT CONDITION INDEX (PCI) 2023-12-24T13:54:46+07:00 Paulinus Alan Tangke [email protected] Harry Moetriono [email protected] <p>Roads are a land transportation sector that is often used by Indonesian citizens to travel far or near. Because the development of globalization also affects the level of mobility which has an impact on the increasing use of vehicles, resulting in the volume load of vehicles exceeding the planned road class limits, so that the quality and age of pavement will decrease.</p> <p>The location of this research was conducted to analyze pavement damage to road conditions on damage to the Jl. Krian bypass with a length of 3 km. The method used for this research is PCI (Pavement Condition Index) with the aim of finding values based on the type, level and extent of damage to the method used to determine the risk of damage and risk response to the roads being surveyed.</p> <p>The results of the research on the Jl. Bypass Krian STA 0+000 – 3+000 based on the PCI method gets a total value of 47.6% Moderate (Fair) with the highest percentage PCI value of road conditions being 38.50% in Moderate road conditions (Fair), 21.50% on Good road conditions, 20% on Poor road conditions, 16.60% on Very Good road conditions and 3.30% on Very Poor road conditions with reference to the PCI section matrix the road needs to be repaired.</p> 2023-12-24T06:34:44+07:00 ##submission.copyrightStatement## PERENCANAAN PERKUATAN LERENG MENGGUNAKAN SHEET PILE SEBAGAI ALTERNATIF DINDING PENAHAN TANAH LERENG JEMBATAN KACA KAB.PROBOLINGGO 2023-12-24T13:54:46+07:00 Dwi Septy Wahyuningdiah [email protected] Laily Endah Fatmawati [email protected] Yerry Kahaditu Firmansyah [email protected] <p>Slopes are the plains of the earth that create an angle of inclination on the horizontal side. Slopes are formed in two ways, naturally (geological processes) or man-made. Several ways that can be used to avoid the formation of collapse are retaining walls by identifying the effect of the safety factor on slope stability under existing conditions. In this study it was intended to plan slope reinforcement using sheet piles with the help of the plaxis program and using the manual calculation of the fellenius method to determine the safety factor for slope stability to overcome landslide disasters on glass bridges. The results of this study are the results of the analysis of the factor of safety from manual fellenius calculations and using the help of the Plaxis software before being given reinforcement and after being given sheet pile reinforcement.</p> 2023-12-24T07:00:37+07:00 ##submission.copyrightStatement## PERBANDINGAN KINERJA PENGECORAN ANTARA CONCRETE-BUCKET DAN CONCRETE-PUMP PADA PROYEK BANGUNAN BERTINGKAT 2023-12-24T13:54:47+07:00 Rachmi Yanita [email protected] Nurdiyanto Nurdiyanto [email protected] <p>In the implementation of cast in situ concrete construction, the casting method is well planned so that it can be completed on time with an efficient cost. The casting method that is commonly used is to use a concrete-pump and concrete-bucket which are used together, especially for high-rise buildings. This study aims to obtain the time, cost and productivity of concrete casting work on floor plates, beams and columns of a study project in Jakarta, especially on floors 7 to 11 which are typical floors, using the column concrete-bucket method and concrete-pump for slabs and beams. . An analysis was carried out on the stages of the work procedure, the time and cost of casting and the productivity of the two casting methods according to the volume of the beam and column plates.The results of the analysis show that the time and productivity for each floor are different because the higher the floor elevation, the longer the processing time will be, so the productivity will decrease. It is obtained that the cost for operating a casting tool using a Concrete Pump is Rp. 76,727,868 or IDR 81,270.912/m3, with a faster processing time of 7.58 minutes/m3 and higher volume per hour productivity than the concrete bucket. Meanwhile, the cost of a concrete-bucket used simultaneously for casting a column is higher than that of a concrete pump, reaching Rp. 53,388,724 or IDR 127,877.183/m3 because it is related to the use of a Tower Crane.</p> <p>Keywords: Casting method, concrete pump, concrete bucket, productivity, time and cost</p> 2023-11-14T00:00:00+07:00 ##submission.copyrightStatement## PENINGKATAN KESELAMATAN LALU LINTAS DIRUAS JALAN PETAPAHAN – SURAM KM ± 59-60 DESA PETAPAHAN KABUPATEN KAMPAR 2023-12-24T13:54:47+07:00 Husni Mubarak [email protected] Desky Aldino [email protected] Puspa Ningrum [email protected] <p>Petapahan – Suram KM ±59 - 60 is a causeway with the status of a Provincial Road which is the authority of the Riau Provincial Transportation Office in completing the infrastructure aspects of the Petapahan - Suram KM ±59 - 60 road section. With such conditions, traffic problems arise in the form of traffic accidents. Therefore, to overcome the traffic problem, an analysis is needed to overcome the problem. The analysis method used in this peelitian is by Macro Analysis and Micro Analysis. Macro Analysis was conducted to determine the characteristics of accidents in general how the tendency of traffic accidents on the Petapahan – Suram KM ±59 - 60 road section. Macro Analysis uses simple numerical analysis namely analysis of the time of the accident incident, analysis based on the month of the incident, analysis of accident victims, analysis of the type of accident. For micro analysis consists of several analyses consisting of analysis based on accident chronology data, analysis of factors causing accidents, analysis of instantaneous.&nbsp;speed / spot speed and analysis of stop visibility. After the analysis, it was concluded that the factors causing many accidents that occurred in Petapahan – Suram KM ±59 - 60 were human factors and environmental factors. The human factor is the main factor in accidents that occur. So this research is needed to overcome these problems such as addition, replacement and maintenance for road equipment facilities in accordance with technical requirements.</p> 2023-12-21T00:00:00+07:00 ##submission.copyrightStatement## ANALISIS STRUKTUR RANGKA BATANG 2D DENGAN METODE MATRIKS KEKAKUAN MENGGUNAKAN APLIKASI PTC MATHCAD DAN ANALISIS SAP2000 2023-12-24T13:54:47+07:00 Muhammad yazid [email protected] Rizki Ramadhan Husaini [email protected] Sukri Sukri [email protected] Deri Islami [email protected] Teddy Julio Gunawan [email protected] Muhammad Defri Wahyudi [email protected] <p><em>The analysis of a 2-dimensional truss structure (plane truss) can be done using the matrix method with the stiffness matrix formula to obtain the internal forces that occur. The stiffness matrix method can be easily described with the PTC Mathcad application. With this PTC Mathcad application, the stages in the matrix method analysis can be clearly seen, starting from the stages of the matrix method, namely creating a truss model, creating a local stiffness matrix, creating a transformation matrix, creating a global stiffness matrix, compiling a structural stiffness matrix, stacking partitions and re-arrangement of structural stiffness matrices, calculating displacement in local and global coordinates, calculating the forces in each rod and calculating the reaction force of the platform. The purpose of this research is to create a simple program using the PTC Mathcad programming language to analyze the 2-dimensional truss and compare the results of the simple programming with the results of the SAP2000 analysis. The comparison results obtained on the joint displacement / displacement value and the bar force value between the PTC Mathcad application and SAP2000 obtained an average result below 2%. For the analysis of the reaction to the pedestal, the analysis using PTC Mathcad is the same as the SAP2000 analysis for the vertical reaction and for the horizontal direction, the SAP2000 application gets the result of 1.25x10<sup>-13</sup> while in PTC Mathcad there is none.</em></p> 2023-11-17T00:00:00+07:00 ##submission.copyrightStatement## IDENTIFIKASI PENERAPAN GREEN BUILDING PADA BANGUNAN YANG SUDAH TERBANGUN DI KAWASAN INSTITUT TEKNOLOGI KALIMANTAN 2023-12-24T13:54:47+07:00 Raftonado Situmorang [email protected] Oryza Lhara Sari [email protected] Sherlia Sherlia [email protected] <p>Kampus Institut Teknologi Kalimantan (ITK) memiliki sekitar 7 gedung yang sudah terbangun. Gedung yang sudah terbangun ini diidentifikasi apakah bangunan yang ada sudah menerapkan <em>Green Building</em> atau tidak. Metode yang digunakan adalah metode quantitatif dengan menggunakan penilaian versi 1.1 dari <em>Green Building Council Indonesia </em>(GBCI). Penilaian ini dimulai dengan pengukuran data lapangan, yaitu pengukuran kualitas udara, tingkat pencahayaan, tingkat kebisingan, suhu dan kelembapan udara. Kemudian dilakukan survei kenyamanan pengguna Gedung kepada 30 persen dari jumlah populasi pengguna Gedung tetap. Tahapan selanjutnya adalah mengobservasi lapangan terkait kampanye yang dilakukan seperti kampanye penghematan energi, konservasi air, pemilahan sampah, pelarangan merokok, dan pengurangan kendaraan bermotor. Lalu mengumpulkan data sekunder terkait kebijakan, dan dokumen yang terkait lainnya.</p> <p>Hasil penilaian <em>Green Building</em> pada Gedung dikawasan ITK, Gedung A mendapatkan 26 poin, Gedung B mendapatkan 26 Poin, Gedung E mendapatkan 23 Poin, Gedung F mendapatkan 26 Poin, Gedung G mendapatkan 26 Poin, Gedung Laboratorium Terpadu 1 mendapatkan 23 Poin, dan Gedung Asrama Mahasiswa mendapatkan 28 Poin. Untuk predikat <em>greenship</em> yang didapatkan Gedung yang berada dikawasan ITK adalah tidak mendapatkan predikat peringkat greenship.</p> 2023-11-17T00:00:00+07:00 ##submission.copyrightStatement## PENGARUH VARIASI PENAMBAHAN SEMEN DAN PERBEDAAN SUHU SAAT PENCAMPURAN TERHADAP MUTU BETON 2023-12-24T13:54:47+07:00 Doni Rinaldi Basri [email protected] Al Hafis Liontin [email protected] Muhammad Yazid [email protected] <p><em>Concrete is one of the building structural elements consisting of a mixture of aggregate as a filler and cement paste as a binder. Improving the quality of the concrete mixture will produce concrete with high or maximum compressive strength. Many people think and assume that the more cement used in a concrete mix, the quality/strength will increase. Actually, this assumption is not completely wrong and not completely correct and here the author will try to examine whether adding a lot of cement will improve the quality of the concrete and see the effect of temperature on the quality of the concrete mixture. Variations in adding cement from 450 kg, 500 kg, and 550 kg showed an increase in concrete quality, with compressive strength values of 34.19 MPa, 37.40MPa, and 42.01MPa, while variations in adding 600kg cement experienced a decrease in concrete quality. With a compressive strength value of 41.16MPa. From this research, adding cement does not always improve the quality of concrete. Variations in adding cement of 450kg, 500kg, 550kg and 600kg during morning mixing with a mixing temperature of 24°C with compressive strength values of 33.22 MPa, 37.3MPa, 40.51MPa and 44.69MPa, show increasing quality values. Meanwhile, during the afternoon mixing time with a mixing temperature of 32℃, variations in the addition of 450kg, 500kg and 550kg cement showed that the compressive strength results continued to increase, namely with compressive strength values of 34.19MPa, 37.40MPa and 42.01MPa. Meanwhile, by adding 600 kg of cement variation, the compressive strength value was found to be 41.16MPa, where the concrete experienced a decrease in the compressive strength value. So it can be concluded that mixing the concrete mixture in the morning with a mix temperature of 24℃ is better than in the afternoon with a mix temperature of 32℃</em></p> 2023-11-20T00:00:00+07:00 ##submission.copyrightStatement## ANALISIS PERUBAHAN GARIS PANTAI DI WILAYAH PESISIR PROVINSI RIAU MENGGUNAKAN DATA SATELIT 2023-12-24T13:54:47+07:00 Rizki Ramadhan Husaini [email protected] Muhammad Yazid [email protected] Husni Mubarak [email protected] Tri Ramadani [email protected] Muhammad Hanif Ahda [email protected] Muhammad Fajar Anugrah [email protected] <p><em>Riau Province has a coastline area estimated at 2,713 kilometers. Changes in the coastline in the coastal areas of Riau Province occur along the current coastline. This change has an impact on the country's border zones and reduces the quality of life of the people who live around these areas. This research aims to determine the distance and rate of change in coastlines, as well as maximum changes in abrasion and accretion. Calculation of coastline changes using satellite data processed through the Digital Shoreline Analysis System (DSAS) application with Net Shoreline Movement (NSM) and End Point Rate (EPR) statistical methods as well as discussion of aspects of land cover, wind direction, soil type and 10 year statistics going forward by taking research time in 2013, 2017 and 2021. The highest area of abrasion occurred in Rangsang District at 1760.04 ha with a rate of 25.82 m/year while the highest accretion area occurred in Sinaboi District at 2195.55 ha at a rate of 87, 24 m/year.</em></p> 2023-11-26T00:00:00+07:00 ##submission.copyrightStatement## ANALISA REOLOGI DASAR ASPAL MODIFIKASI NANO ABU CANGKANG SAWIT 2023-12-24T13:54:47+07:00 Fitra Ramdhani [email protected] Bambang Sugeng Subagio [email protected] Harmein Rahman [email protected] Russ Bona Frazila [email protected] <p><em>The development of asphalt modification using nano technology is one of the innovations in creating a new material that is nano meter scale that has a superior nature of large material. The uniqueness of the material nano is the smaller the size of the material, the surface area and performance of the material characteristics in the asphalt mixture are increasing. This study aims to determine the effect of the addition of nano ash of palm shells (NACS) on bitumen on the nature of the basic rheology of asphalt. Research methods use testing methods in the laboratory. The nano material used is a palm shell ash material obtained from the residual waste of the burning of the palm shell originating from Riau which is then processed into nano ash of the palm shell (NACS) in the ITB Chemical Laboratory. The asphalt used is asphalt Pen 60/70 Pertamina production. The use of NACS material in asphalt modification with variations of 1%, 2%, and 3%NACS can reduce penetration values, increase soft points, reduce ductility values and reduce mixing temperatures and compaction temperatures in line with increasing percentage of NACS ..</em></p> <p><strong><em>Keywords:</em></strong><em> Nano Palm Shell Ash (NACS), Basic Asphalt Rheology,Nano Technology</em></p> <p><em>​</em></p> 2023-12-20T00:00:00+07:00 ##submission.copyrightStatement##