bluuebunny/crossref_metadata_2025_split huggingface dataset:
The effect of dogbones on the behaviour of a castellated steel beam under cyclic loads
Authors: Firman R , Amin M , Parung H , Irmawaty R , Amiruddin A A 
Published: February 2020

Abstract
The plastic moment capacity of castellated steel beams should be reduced to lower the Mpl beam. Higher Mpl beam will require bigger column section to avoid failure/yielding in the column section. The research aims to analyse the behaviour of beams ductility of castellated steel beams using “dogbones.” The research used four types of test beam to check the influence of “dogbones” that are made of steel beams IWF 150 x 100 x 5 x 7. They are normal castellated steel beam, variation in the length of dogbones, and variation in the deep of dogbones. The results show that the plastic moment capacity of castellated beams is higher than normal beam. It is, therefore, necessary to reduce the plastic moment capacity of castellated steel beam by using “dogbones.” It will maintain ductile behaviour of the steel structure. Concrete was discussed.
Utilization of tire chips as a substitute for coarse aggregate in concrete
Authors: Parung H , Irmawaty R , Wijaya D M 
Published: February 2020

Abstract
Tire chips are produced from the material shred or small pieces of truck tires into a size 0.5 - 3 in. Waste tires increase and are not easily biodegradable in environmental pollution, therefore it is necessary to pay special attention to the environment by using waste tires as an aggregate substitute in concrete. The objectives of this research are to determine the mechanical properties (compressive strength, splitting tensile strength and modulus of elasticity) of concrete by use tire chips of 0%, 10%, 20% and 30% as a substitute of coarse aggregate. Cylinder specimens with a diameter of 100 mm and a height of 200 mm. Compressive strength testing was conducted at 3, 14 and 28 days. While the modulus of elasticity and splitting tensile strength was conducted at only 28 days. The results show that the weight of concrete volume decreases 3% on each additional 10% of tire chips. Compressive strength and splitting tensile strength also decreased with increasing content of tire chips. A decrease in the average compressive strength of 18% in addition to 10% of tire chips, while the splitting tensile strength decreased by 26%. Modulus of elasticity follows the trend of concrete compressive strength and its value is almost equal between experimental and theoretical. The substitutions of tire chips more than 10% of the volume of coarse aggregate is not recommended.
Influence of short term oven aging on volumetric properties of asphalt concrete mixture containing modified Buton asphalt and limestone powder filler
Authors: Iroth M W , Tjaronge M W , Pasra M. 
Published: February 2020

Abstract
In an effort to develop the use of modified Buton asphalt (MBA), this study designed a concrete asphalt mixture using the MBA as the main binding material and modified it with limestone powder fillers to produce concrete asphalt that has good resistance to aging. Short-term aging test was simulated in the laboratory on a loose mixture. The volumetric void in mixture (VIM), void in mineral aggregate (VMA) and void filled asphalt (VFB) values were evaluated on compacted specimens and had experienced STOA. Based on VIM, VMA and VFB values, it can be noted that mixture that only used MBA or mixture that combined MBA and limestone powder can provide resistance to bleeding or cracking, sufficient durability and stable interface adhesion between asphalt films and aggregate surfaces.
Analysis of stability of residue asphalt emulsion mixture containing Buton Granular Asphalt (BGA)
Authors: Bulgis  , Tjaronge M W , Adisasmita S A , Hustim M 
Published: February 2020

Abstract
The natural rock asphalt which available in abundance in the southeast of Buton Island, Indonesia was attempted to use in the production of cold mix asphalt. The purpose of this study is to replace petroleum bitumen with local materials such as natural rock asphalt. Small granular size of natural rock asphalt that referred to Buton granular asphalt (BGA) was blended with petroleum bitumen as droplet phase in the asphalt emulsion mixture. Mixture with 8.8% of asphalt emulsion mixture made with the cationic slow setting (CSS) that corresponded to the residue asphalt emulsion content was used as a mixture control. At residue asphalt emulsion content, bitumen of BGA was used for petroleum bitumen partial replacement in the asphalt emulsion mixture production. Test result revealed that utilizing BGA in asphalt emulsion mixture has proved for improving stability where the stability of all mixture with BGA super passed the stability of mixture without BGA.
Experimental study on marshall stability and flow of Asphalt Concrete Wearing Course (AC-WC) mixture using Asbuton semi extracted as binder
Authors: Irianto  , Rachman Djamaluddin A , Pasra M , Arsyad Ardy 
Published: February 2020

Abstract
This study is a part of an on going research program to optimize the utilization of the huge deposit of natural asphalt in several areas in Buton Island, Indonesia. In asphalt production processes it is important to think about energy savings and environmental benefits. Production of AC-WC mixture using Asbuton semi extracted bitumen is one of the efforts to reduce energy consumption. Asbuton modification is a semi extracted bitumen produced from Buton natural rock asphalt, it can be used as a binder material in asphalt mixture. This paper presents Marshall test that was performed on AC-WC mixture using Asbuton semi extracted as binder. The result of Marshall test shows the sufficient stability and resistance to deformation can be established by aggregate interlocking and cohesion which developed due to the Bitumen in Asbuton semi extracted.
The sustainable performance challenge of asphalt mixture using polypropylene due to environmental weather
Authors: Sukrislistarto  , Ramli M I , Pasra M , Amiruddin A A 
Published: February 2020

Abstract
Virgin Polypropylene (PP) has been widely used as polymer additive to modify asphalt concrete mixtures. An attempt to reduce plastic waste including waste PP is to use it to modify concrete asphalt mixtures. In an effort to develop the use of PP waste, this study designed a concrete asphalt mixture using petroleum bitumen as the main binding material and modified it with PP waste to produce concrete asphalt that has good resistance to environmental weather impact. Indirect Tensile Stiffness Modulus (ITSM) value is one of the main characteristics of the asphalt mixture design which represents the characteristics of the stiffness of the asphalt concrete mixture in elastic conditions when it receives a load that produces tensile stress on the asphalt concrete layer. The relationship between temperature and ITSM value of concrete asphalt used to determine the effect of environmental weather on the stiffness properties of the asphalt concrete mixture made with petroleum bitumen and waste PP. ITSM values obtained from the test results show that modification by using waste PP in concrete asphalt mixes using petroleum bitumen as the main binder produced a slightly stiffer mixture without negative effect on mixture.
Study on the collapse of the steel bridge due to flooding in Baringin Village of Padang City, Indonesia
Authors: Fauzan  , Rahmania Dian , Junaidi  , Nur Oscar Fithrah , Al Jauhari Zev 
Published: February 2020

Abstract
Baringin Bridge is a steel bridge that connects between Baringin Village and Koto Lalang Village in Padang City, Indonesia. Baringin Bridge was made of steel frame construction using the Box Caisson type foundation, with 7.6 meters width and 60 meters length. This bridge was built with a semi cantilever method with temporary support using coconut tree trunks. The construction of Baringin Bridge was terminated due to flood in Baringin River on November 2, 2018, which causes the collapse of the temporary scaffolding. The flood made the bridge move away about 300 meters from its foundation. This study aims to find out the cause of the steel bridge collapse. The assessment was carried out to analyze the existing bridge construction, the cause of flooding, and flood discharging that occurred on November 2, 2018. The calculation of forces acting on the scaffold when the bridge collapsed was also conducted. The results of the study show that Baringin River discharge on November 2, 2018, was 407.17 m³/s with a river flow velocity of 1.45 m/s. The calculation results of the scaffold show that the bridge should be able to withstand forces arising from the weight of the steel frame and the flow of the river. However, the collision of the wood logs that hit the scaffold’s feet causes the collapse of the steel bridge.
Experimental study of unconfined compression strength of Clay-Expanded Polystyrene (EPS) stabilized with alkaline
Authors: Tenreng R , Tjaronge M W , Harianto T , Muhiddin A B 
Published: February 2020

Abstract
Concern for the global environmental impact of industrial waste disposal and the strict legal rules on the environment has led to various studies of recycled materials. One of the most widely used and recycled materials is Expanded Polystyrene. Expanded Polystyrene has a low mass compared to its volume. This has made many breakthroughs in EPS waste recycling as a substitute material, one of which is in the manufacture of lightweight materials used in the field of civil engineering. Therefore, this study focused on the development of soil composites made by mixing recycled EPS with quicklime stabilization clay activated by gum rosin and iron oxide (hereinafter referred to as alkaline) based on the weight ratio with variations of 0%, 0.3%, 0.6% and 0.9% using the slurry method. The parameters to be analyzed are the Unconfined Compressive Strength values of each mixture variation in a certain curing period. So that the optimum composition between clay, activator, and EPS will be obtained. The test results show that the addition of activator and EPS can significantly reduce the weight of the specimen. So it can be concluded that the addition of EPS and activator can reduce weight with an optimum composition of 0.9% EPS in 28 days of curing where the compressive strength of the specimen is higher than the value of the compressive strength of the clay.
Landslide susceptibility mapping along road corridors in west Sulawesi using GIS-AHP models
Authors: Arsyad A , Hamid W 
Published: February 2020

Abstract
Landslide susceptibility mapping (LSM) along road corridors is a fundamental tool for road planners and transportation decision-makers in determining the severity of slope failure areas, and in planning effective landslide prevention strategies. The accuracy of LSM relies on sufficient spatial database from the data of relevant landslide contributing factors. However, for roads located in remote areas in the Eastern Part of Indonesia, the database remains poor, leading to difficulty in mapping landslide prone areas. This study presents a framework of LSM along road corridors in the area with a limited database. The framework comprises identification and classification of several landslide contributing factors including slope angle, the distance of slope to the road, the distance of drainage to the road, the distance of faults to the road, lithology where road located, and precipitation on the area. These factors are weighted based on causative relation to landslide occurrence by using the analytical hierarchy process (AHP), then converted into the grid in a raster map by using Arc-GIS. The maps are then overlaid to generate landslide susceptibility ratings over the area. The LSM framework is tested in a landslide-prone area along road corridors of Polewali – Malabo, West Sulawesi Indonesia. The accuracy of the obtained LSM is evaluated with R-index, which is the index of how closed predicted slide area in the LSM and real slide area in the field obtained from landslide inventory undertaken during the field survey. It is found that R-index of the LSM is 91.3%, indicating a better prediction of landslide hazard with the LSM framework. The framework of LSM for road corridors would be useful for landslide hazard mitigation in the road infrastructure of developing countries.
Soaking effect on bearing capacity of subgrade material
Authors: Badaron S F , Lawalenna S , Harianto T , Rahman D 
Published: February 2020

Abstract
Research aims to analyze the index properties and minerals content of subgrade materials, as well as to analyze how much degradation of bearing capacity of subgrade by providing immersion cycles. Research to be performed in the laboratory sequentially starting from material index properties tests to ensure the soil sample meets the requirements as a subgrade. The test was continued by unconfined compression (UCS) and CBR test against each test specimen after being subjected to immersion cycles in 4 days, 8 days, 12 days and 16 days. The last step is to compare the degradation of subgrade bearing capacity before and after immersion cycles. Test results of index properties are in conformity with x-ray diffraction test results, based on index properties results of activity degree (A) is 0.52 including kaolinite minerals and x-ray diffraction test results of this subgrade material is largely dominated by Kaolinite clay minerals. Test results by immersion cycles shown significant decrease in the value of CBR and UCS, especially in the initial immersion for 4 days, CBR and UCS values drastically decreased by 90% and 97%, subsequent to 8 days, 12 days and 16 days CBR and UCT values, not significant decrease compared to age 4 days.
Study of traditional market waste bioremediation in lowland city as materials for making compost and prospects of development
Authors: Rahim I R , Harianto T , Ihsan M 
Published: February 2020

Abstract
Compost is organic materials that have decomposed and is used as a plant fertilizer and soil conditioner. The principle technique of composting is to convert organic materials considered as waste to process such a way so that compatible to be used as media which functioning to loose soil and fertilizer plants. The study was conducted on a laboratory scale, composting the market’s garbage in Makassar city using cow manure as the additional material and the addition of an effective microorganism (EM4) as an activator by using Takakura composter. This study seeks the effect of certain variables in strictly controlled conditions. The results show that the addition of effective EM4 affects the quality of the final compost which is relatively better than natural composting. Additional material variation is very influential to the quality of finished compost. The best quality compost contained in variation P2 containing vegetable waste and cow manure with C-organic of 20.39 %, N-total of 1.2 %, C/N ratio of 17:05, P-total of 1.98 % and K-total of 1:09 %. This composting method provides an opportunity to develop as a business, economic value generator and help the government in reducing waste generation.
The infiltration capacity of eco-concrete paving on different block shapes
Authors: Rangkang J , Samang L , Adisasmita S , Hustim M 
Published: February 2020

Abstract
The study evaluates the infiltration capacity of the three eco-concrete paving block types, they are the three-diamond, the S, and the straight pavers. The objective of the study is to evaluate the infiltration capacity of those paving block types in different scenarios of slopes in high rainfall intensity. This research is carried out in the laboratory with some boundaries, namely: paving blocks used are 80 mm thick, gaps between pavers is 5 mm wide, the bedding layer thickness is 100 mm, the slopes of the test field are 0%, 2%, and 4%, rainfall intensities is 275 mm/hour. A box model for the infiltration capacity test was developed with a size of 1m2, which is equipped with a modified rainfall simulator. The main conclusions of this study are: (a) Each paving shapes shows different infiltration capacity characteristics; (b) The infiltration rate of pavement is strongly influenced by paving shapes; (c) The slope gradient increases, the volume of infiltrated water decrease; (d) The trihex type gives a better infiltration characteristic than that of the uni page and the rectangular types.
An analysis of the travel time in the Unhas lecturer housing of Makassar city
Authors: Rachman R , Mangontan R , Toding A 
Published: February 2020

Abstract
Travel is the movement of a person from one place to another. The journey was formed because of the activities carried out not in their residence. Travel characteristics of the population depend on the purpose of the trip. The purpose of this research is to identify the variables that affect travel time and model the use of modes of travel time for workers who live in UNHAS Lecturer housing. In this research, the data analysis used inferential analysis, namely multiple regression analysis with the help of the SPSS computer program. The results showed variables that affect the travel time in the UNHAS Lecturer housing are the distance traveled and the time of departure to work. Regression modeling that corresponds to the travel time in this case study is Y = 3.433 + 0.259 X4 – 0.010 X5.
Developing a direct gravity trip distribution model for air passenger demand
Authors: Suprayitno H 
Published: February 2020

Abstract
All Airport network and Commercial Flight Service networks need to be planned and assesse periodcally. The planning must be developed based on the Air Passenger Demand prediction. Direct Trip Distribution Model seems the most appropriate for this prediction. Direct Gravity Trip Distribution model was tried to be developed, calculated by using the iterative method. The research gives an indication that the Direct Gravity Trip Distribution can be developed and used. The general formula has been developed. The appropriate formula variables, incorporating the attraction coefficient, the attraction mass, the impedance and its powering value still need to investigate. The calculation method has been developed but needs to be refined, including the optimum and the accuracy indicator. The Direct Gravity Trip Distribution Model can be used either for Air Transport and Sea Transport.
Ground deformation analysis on road infrastructure in north buton Indonesia using interferometric synthetic aperture radar (Insar)
Authors: Jaya L M G , Safani J , Okto A , Hasbi M , Kadir A 
Published: February 2020

Abstract
We investigate ground deformation that occurred on national road infrastructure in North Buton Regency, South East Sulawesi, Indonesia. This research conducted to obtain spatial information about ground deformation occurred. Road infrastructure plays an important role in economic and transportation particularly in North Buton. Road damage will cause losses both economically and security. The method of the research was Interferometric Synthetic Aperture Radar (InSAR). InSAR uses two SAR Images from two different acquisitions to generate interferogram and then ground deformation parameter. We used Sentinel-1 images acquisition years of 2015 and 2017. We found that the ground deformation occurred between -118 to +20 millimeters during the year of 2015 and 2017 acquisition or about -59 to +10 millimeters per year and its direction from north to south of the road body. The movement of ground deformation is dominated downward movement which it is estimated strength affected by the presence of faults near the location.
Promoting efficient and effective road infrastructure procurement
Authors: Agung A , Dewi D P , Taniguchi H , Sanjaya P A 
Published: February 2020

Abstract
Road infrastructure plays an essential role in supporting the economy of a region. The importance of road performance has implications for the government in arranging good road infrastructure. One aspect of the government’s efforts to realize good road infrastructure is through the provision process implementation. Recently, the provision or procurement of maintenance projects uses conventional methods. Although the supply of road infrastructure projects is based on contractors who work effectively, procurement alternatives are using integrated ways that can support an efficient and efficient procurement process. This study aims to compare the procurement process between conventional and mixed methods and identify the factors that drive the success of the procurement of effective and efficient road projects. The Delphi questionnaire survey was conducted to obtain data on factors that support an effective and efficient procurement process. Data analysis shows that the constraints in implementing integrated methods, which are practical and useful methods, are regulation, the competence of stakeholders, and adaptation to new approaches. These obstacles can then be overcome by establishing clear rules, training to improve human resources, and socialization from the government.
The effect of median opening on traffic characteristics on the arterial street
Authors: Radjawane L E 
Published: February 2020

Abstract
Pettarani street is equipped with a median opening as a facility for vehicles to reverse the direction of travel. The median opening width in the Pettarani section varies between 20 m - 37 m. The wideest median opening width in Badan Pertanahan / LPMP segment, while the narrowest median opening width is The Mutiara segment. The largest traffic volume that merged in the median openings of Pettarani street for morning peak hour 1816 pc/h in HM. Asyik Mosque and Telkom segments (Pettarani S-S). For afternoon peak hour with a value of 1802 pc/h. The median opening segment HM. Asyik Mosque has the highest density value, which is 17 pc/km/ln in the morning and 16 pc/km/ln in the afternoon. The highest density value for diverging movement is 32 pc/km/ln occurs at HM Asyik Mosque median opening segment. The wider the median opening results in increased density, this is due to increased space for the vehicle to do a reverse rotation maneuver, thus increasing movement disturbances for opposite flow and flow behind the vehicles that will do reverse rotation. The greater the volume in the main section the more it affects the movement of vehicles that are in the median opening to do merging and diverging, thereby increasing density.
Effect of velocity flow patterns on viscosity in Saddang River
Authors: Hasbi M , Pallu M S , Lopa R , Hatta M P , Zetiawan Z 
Published: February 2020

Abstract
River conditions in Indonesia are very concerning. Furthermore, uncertain climate changes between dry and rainy seasons, make sediment concentrations are increasing over time increase in sediment makes river utilization not optimal. The purpose of the research was to find out the flow rate of the results of field measurements using an Acoustic Doppler Current Profiler (ADCP). From the results of measurements in the field using ADCP obtained the flow velocity value in the Mamasa River is 1.362 m / sec at a depth of 3.20 m and viscosities 761.412 MPa, in Sungai Buntu Batu the flow velocity value is 2.184 m / sec at a depth of 1.99 m and viscosity of 1827 MPa, at River Mata Allo flow velocity value is 0.379 m / sec at a depth of 1.47 m and viscosity of 105 MPa, and in Pekkabata River the flow velocity value is 0.614 m / sec at a depth of 1.47 m and viscosity is 516.565 MPa. In general, the Saddang watershed has a low floating sediment level.