Studi Penentuan Nilai Ekivalensi Mobil Penumpang (Emp) Berbagai Jenis Kendaraan pada Ruas Jalan Utama di Kota Palu

In general, traffic is moving on the highway consists of various types of vehicles. such as motorcycles, passenger cars, trucks, buses and other vehicles. All these vehicles have a dimension, weight and operating characteristics vary. Trucks and buses on the road basically requires space larger than passenger cars. A truck in a traffic flow affects two passenger cars and even more depending on the situation. Buses also requires more space than passenger cars. Passenger car equivalence (PCE) is a conversion factor of various types of vehicles to light vehicles (including passenger cars). Various types of vehicle available at the link can be compared to passenger cars in a way is converted to light vehicles. This study aims to determine the value of passenger car equivalence (PCE) from several types of vehicles that are often found in Palu.Retrieving data with survey for the links Sam Ratu Road and Road W. Monginsidi for 16 hours. The samples will be used for the calculation of PCE used at peak hours with traffic flow in saturated conditions, data retrieval is done by using a video camera (handy cam). The method used to calculate the PCE value of each type of vehicle is the method of multiple regression using the program MS Excel 2003.The results obtained by the PCE heavy trucks, medium trucks, medium buses and motorcycle respectively by using regression analysis method was successively, 2.53, 1.28, 1.77, 0.17

Studi Penggunaan Asbuton Butir Pada Campuran Beton Aspal Binder Course (Ac-bc)

The use of natural asphalt (asbuton) in road pavement construction has been widely researched anddeveloped. One of them is a mixture of petroleum asphalt with asbuton. The purpose of this study wasto determine how the effect of granular Asbuton on a mixture AC-BC (Asphalt Concrete-BinderCourse).Type of Granular Asbuton used is Asbuton Type 15/25. The amount of Granular Asbuton used inasphalt mix are 7%, and 8% of total weight of the mixture. The number of test specimens in this studywere 117 specimens consisting of 54 to PKAO, 27 for the PRD, 24 for variation of the collision, 12 for theMarshall Immersion test and 6 to Optimum Asphalt Content.Based on the results of tests performed on a mixture of AC-BC with a modified bitumen 60/70 andgranular asbuton amount of 7% found that the Optimum Asphalt Content is 5.2%, Density values is2.378 gr/cm3 , VIM value is 4.871%, VMA value is 15.456%, the VFB value is 68.485%, the Marshall Stabilityvalue is1333.571 kg, the Marshall Quetion value is 333 690 kg/mm and Marshall Immersion Value is82.08%. Asphalt Concrete-Binder Course Mixture with the addition granular asbuton amount of 8%found that the Optimum Asphalt Content is 6,2%, Density values is 2,322 gr/cm3, VIM value is 5,01%,VMA value is 17,443%, VFB value is 71,303%, Marshall Stability value is 1563,27 kg, Marshall Questionvalue is 386.95 kg/mm and Marshall Immersion value is 82,45%.Based on the percentage of granular asbuton in Asphalt Concrete-Binder Course Mixture shows thatthe 8% of granular asbuton can be increased Marshall Stability and Marshall Immersion and OptimumAsphalt Content values

Pengaruh Temperatur Terhadap Modulus Elastisitas Dan Angka Poisson Beton Aspal Lapis Aus Dengan Bahan Pengisi Kapur

Temperature affects the density of asphalt concrete which will ultimately affect the performance of the asphalt concrete. The purpose of this study was to determine the effect of temperature variation on the modulus of elasticity and Poisson ratio of asphalt concrete wearing course using hydrated lime as filler material. Lime content variations used in this study were 0 %, 25 %, and 50 %, with temperature of 20 °C, 30 °C, 40 °C, 50 °C, and 60 °C. The modulus of elasticity and the Poisson ratio were measured using the indirect tensile strength test. The results showed that higher temperatures decrease the elastic modulus of asphalt concrete. But the higher the temperature the higher the Poisson ratio, which means asphalt concrete mixtures become more flexible

Simulasi Numerik Terbentuknya Reattachment Length Terhadap Perubahan Tinggi Obstacle Pada Tee Duct

Simulasi Numerik digunakan untuk melihat fenomena aliran melintasi tee duct dengan menggunakan viscous turbulence model Reliazible k-epsilon. Metode yang digunakan pada penelitian ini adalah dengan menggunakan simulasi numerik untuk mengkaji karakteristik aliran melintasi tee duct berukuran sisi inlet 1 meter, panjang sisi keluar 1 meter dan ukuran duct 0,15 m x 0,15 m. Pada studi ini, akan dipasang obstacle pada tee duct dengan penambahan variasi tinggi obstacle (t/D) pada sisi tee duct t/D = 0,5 dan 1 dengan menggunakan asumsi dalam keadaan steady flow, incompressible flow. Prosedur simulasi numerik mengacu dari ten element policy. Simulasi numerik dengan menggunakan viscous turbulence model tipe Realizable k-e (RKE) yang sesuai untuk melihat fenomena reattachment dan diskritisasi menggunakan Second Order Upwind. Hasil menunjukkan bahwa reattachment length semakin menurun dengan meningkatkanya ketinggian obstacle yaitu pada t/D = 1 dibanding tanpa obstacle. Kata kunci - tee duct, obstacle, k-ε turbulence model, second order upwin