50 research outputs found

    Characterization of Asphalt Concrete Produced from Scrapped Tire Rubber

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    Scrapped tire rubbers have been proposed as flexible pavement components because they are waste materials. Sustainable development of flexible pavement by utilizing waste tire rubber to replace natural resources generates positive impact to the nature and reducing environmental pollution. This paper presents a study on the investigation of waste scrapped tire rubber as fine aggregate in the production of Asphalt Concrete (AC) mixture. There are three type of AC mixture with 0%, 50%, and 100% of waste scrapped tire rubber replacement of aggregate at fraction No. 50 (0.279 mm). Laboratory test is performed on six characteristics of Marshall test are void in mineral aggregate, void in mixture, voids filled with bitumen, stability, flow, and Marshall quotient. The results showed that the optimum asphalt content for ACStandard mixture is 6.78%, while ACScrapped-tire 50% mixture is 7.10% and ACScrapped-tire 100% mixture is 6.22%. Based on the Marshall Test characteristics, scrapped tire rubber can be used as an alternative material to replace fine aggregate in AC mixtures for road surface layer. The use of scrapped tire rubber in asphalt concrete mixtures can improve the resistance to permanent deformation due to ruts and provide better resistance to high temperatures and loads

    Biaya Kecelakaan Lalulintas Jalan Di Indonesia Dan Vietnam

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    The aim of this study is to analyze the characteristics and to estimate the cost of road accidents in Banyumas, Indonesia, and in Vietnam. The accident cost in Indonesia consists of direct and indirect costs, while the accident cost in Vietnam consists of tangible and intangible costs. The results show that the characteristics ofroad accidents in Indonesia are similar to those in Vietnam, with most accidents were caused by men. In addition, the road accident cost in Indonesia is much higher that that of Vietnam

    Optimasi Beban as Truk Untuk Meminimalkan Biaya Transportasi Dan Kerusakan Konstruksi Jalan (Studi Kasus Ruas Jalan Solo-Kartosura-Boyolali Provinsi Jawa Tengah)

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    This research is aimed at defining the optimum axle load of trucks, in a way to produce both minimum transportation cost and damage construction road. Apart from formulating ways to minimize government expenditures in handling road maintenance, this research has investigated a new paradigm as an alternative of road maintenance considering the principles of cost recovery. This means that overloading trucks will have to bear Road User Tax-a tax reflecting their destructive impacts on roads.The result indicate that: Medium good vehicles have an optimum load of 7,500 ton and minimum transport cost of Rp 19.275,54 per vehicle-trip, Heavy good vehicle (HGV) trucks 2 axles 13 ton have an optimum load of 12,667 ton and minimum transport cost of Rp 37.735,21 per vehicle-trip, HGV trucks 3 axles 20 ton have an optimum load of 21,00 ton and minimum transport cost of Rp 52.730,36 per vehicle-trip and HGV trucks 4 axles have an optimum load of 26,50 ton and minimum transport cost of Rp 45.014,25 per vehicle-trip. The average of Road User Tax in effort of the pure cost recovery for: Medium good vehicles have Rp 20,89 per vehicle-trip, HGV trucks 2 axles 13 ton have Rp 195,68 per vehicle-trip, HGV trucks 2 axles 13 ton have Rp 142,96 per vehicle-trip, and HGV trucks 2 axles 13 ton have Rp 489,66 per vehicletrip. A trip in this case is 25,30 km

    Permodelan Biaya Kemacetan Pengguna Mobil Pribadi Dengan Variasi Nilai Kecepatan Aktual Kendaraan

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    Traffic congestion is a situation when the actual speed of the vehicle is under the free flow speed. This situation resulted in losses for road users, which can be an increase in fuel consumption, time wasted, and environmental pollution. The purpose of this study is to develop a model for the congestion charge for private car users for a variety of time values and the actual vehicle speed in the corridor of Jalan Malioboro, Yogyakarta. Congestion charge is the difference between the generalized transportation cost on the free flow speed condition and the generalized transportation cost on the actual speed condition. The generalized transportation cost consists of vehicle operating costs, travel time costs, and the pollution cost. This study found that the cost of congestion for private car users in Malioboro, Yogyakarta, for respondents with a trip to the Malioboro as a destination is IDR 4,009.15 / trip and for through traffic respondents is IDR 4,224.29/trip. Moreover, the congestion cost model for private car users in Malioboro corridor is an exponential function

    ELASTISITAS FAKTOR-FAKTOR YANG MEMPENGARUHI PERMINTAAN KEBUTUHAN ANGKUTAN UMUM DI LONDON DAN YOGYAKARTA

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    The aim of this study is to analyze the elasticity of factors which influence the demand of public transport in London and Yogyakarta, based on the study of Paulley et al (2006) and the study of Sugiyanto (2007). The mode choice model between private cars and public transport (city bus) was developed based on users preferences as indicated by travel attributes. Five travel attributes were assumed to have high influences toward mode choice behavior, i.e; travel cost, congestion charge, travel time, headway of public transport (city bus), and walking time to the bus stop. The logit binomial model was used to formulate the individual behavior based on the stated preference data obtained from private car users in the Malioboro corridor. Themode choice model between private cars and city bus was developed based on 520 options from 65 respondents who used private cars to go to Malioboro to be as through traffic. Based on the direct and cross elasticity, the travel cost attribute has the highest elasticity value. Travel cost is the most sensitive attributewhich influences the election probability of private cars and city bus. The factors which influence the demand of public transport in London are fares, quality of service, income, and car ownership.Keywords: mode choice, stated preference, and elasticit

    ELASTISITAS FAKTOR-FAKTOR YANG MEMPENGARUHI PERMINTAAN KEBUTUHAN ANGKUTAN UMUM DI LONDON DAN YOGYAKARTA

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    The aim of this study is to analyze the elasticity of factors which influence the demand of public transport in London and Yogyakarta, based on the study of Paulley et al (2006) and the study of Sugiyanto (2007). The mode choice model between private cars and public transport (city bus) was developed based on users preferences as indicated by travel attributes. Five travel attributes were assumed to have high influences toward mode choice behavior, i.e; travel cost, congestion charge, travel time, headway of public transport (city bus), and walking time to the bus stop. The logit binomial model was used to formulate the individual behavior based on the stated preference data obtained from private car users in the Malioboro corridor. Themode choice model between private cars and city bus was developed based on 520 options from 65 respondents who used private cars to go to Malioboro to be as through traffic. Based on the direct and cross elasticity, the travel cost attribute has the highest elasticity value. Travel cost is the most sensitive attributewhich influences the election probability of private cars and city bus. The factors which influence the demand of public transport in London are fares, quality of service, income, and car ownership.Keywords: mode choice, stated preference, and elasticit

    KAJIAN KARAKTERISTIK CAMPURAN HOT ROLLED ASPHALT AKIBAT PENAMBAHAN LIMBAH SERBUK BAN BEKAS

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    Almost 99% of flexible pavement in Indonesia are made of asphalt mixed. The generally damage of road construction is crack and permanent deformation. The objective of this research is to analyse characteristics of a Hot Rolled Asphalt (HRA) wearing course which has been modified with scrapped rubber tire, and to compare them with those of the conventional mixture (without scrapped rubber tire). The mixture in this research is HRA with the middle of gradation at no. IV in Bina Marga Spesification. Marshall analysis showed that the mix without scrapped rubber tire has an optimum asphalt content of 7.10%, the mix containing 50% substitution of aggregate at fraction of No. 50 has an optimum asphalt content of 7.30% and the mix containing 100% substitution of aggregate at fraction of No.50 has an optimum asphalt content of 7.00%. The result of marshall immersion test indicated index of retained strength (IRS) of hot rolled asphalt mixtures which contents of 50% as substitution of aggregate at fraction of No. 50 is 96.42. The optimum mixtured is the mixture which is containing scrapped rubber tire as substitution of agregate at fraction of No. 50 is 50%.  Abstract in Bahasa Indonesia:  Hampir 99 % perkerasan jalan lentur di Indonesia terbuat dari campuran beraspal. Kerusakan perkerasan jalan pada umumnya adalah retak dan deformasi permanen. Tujuan dari penelitian ini adalah untuk menganalisis karakteristik campuran Hot Rolled Asphalt (HRA) yang mengandung butiran/serbuk ban bekas dan membandingkan dengan campuran beraspal tanpa serbuk ban bekas. Campuran yang digunakan dalam penelitian ini adalah HRA dengan batas tengah gradasi nomor campuran IV dalam persyaratan Bina Marga. Berdasarkan analisis Marshall diperoleh kadar aspal optimum campuran tanpa ban bekas adalah 7,10%, campuran dengan 50% serbuk ban bekas sebagai pengganti agregat pada fraksi No. 50 memiliki kadar aspal optimum 7,30% dan campuran dengan 100% serbuk ban bekas sebagai pengganti agregat pada fraksi No. 50 memiliki kadar aspal optimum 7,00%. Hasil pengujian Marshall Immersion menunjukkan indeks perendaman campuran hot rolled asphalt dengan 50% serbuk ban bekas sebagai pengganti sebagian agregat pada fraksi No. 50, memiliki nilai yang terbesar yaitu 96,42%. Campuran optimum diperoleh pada campuran yang mengandung serbuk ban bekas sebagai pengganti fraksi No. 50 sebanyak 50%.   Kata kunci : hot rolled asphalt, serbuk ban bekas, marshall immersio

    PERMODELAN BIAYA KEMACETAN PENGGUNA MOBIL PRIBADI DENGAN VARIASI NILAI KECEPATAN AKTUAL KENDARAAN

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    Traffic congestion is a situation when the actual speed of the vehicle is under the free flow speed. This situation resulted in losses for road users, which can be an increase in fuel consumption, time wasted, and environmental pollution. The purpose of this study is to develop a model for the congestion charge for private car users for a variety of time values and the actual vehicle speed in the corridor of Jalan Malioboro, Yogyakarta. Congestion charge is the difference between the generalized transportation cost on the free flow speed condition and the generalized transportation cost on the actual speed condition. The generalized transportation cost consists of vehicle operating costs, travel time costs, and the pollution cost. This study found that the cost of congestion for private car users in Malioboro, Yogyakarta, for respondents with a trip to the Malioboro as a destination is IDR 4,009.15 / trip and for through traffic respondents is IDR 4,224.29/trip. Moreover, the congestion cost model for private car users in Malioboro corridor is an exponential function.Keywords: congestion cost, generalized cost, actual speed, free flow speedAbstra
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