The use of natural asphalt is an alternative to meet the high demand for oil asphalt. Asbuton is natural asphalt from Buton Island, Indonesia. However, the use of Asbuton is not as easy as oil asphalt because the asphalt it contains is hard. The asphalt-concrete mixture must go through a rejuvenation process for several days before being compacted. This study aims to determine the performance of asphalt-concrete mixture using Asbuton if it is compacted immediately after mixing, without giving time for the rejuvenation process. Compaction is done when the mixture is hot and after the mixture is cold. Compaction of the asphalt-concrete mixture in hot temperature (150ºC), based on mechanical characteristics (stability, flow, and Marshall Quotient), has better performance than that compacted in cold temperature (30ºC). However, compaction in both hot and cold temperatures, based on their volumetric characteristics, does not meet the requirements for use as road pavements. The performance of the asphalt mixture can be improved by giving time in the process of softening the asphalt content in Asbuton

Along with the increasing population and increasing development in all sectors in Mataram City every year, resulting in an increase in the volume of vehicles which often causes potential traffic conflicts. This condition results in disturbances for motorists in the flow of vehicles on the u-turn facility so that it affects performance on the road. One of the roads in the city of Mataram that is the choice in the travel route for the community is Jalan Sriwijaya. It is necessary to review the performance of roads with median openings, especially on unsignalized roads and intersections.The method used in this study is the calculation of urban road performance using MKJI 1997. Data from the location of median openings on unsignaled roads and intersections were collected through a field survey and then calculated the average traffic flow, average speed, average turning time average, capacity, degree of saturation, and level of road service.  The results of the analysis show that the average traffic flow that occurs on the Sriwijaya road is 864.73 pcu/hour with a capacity of 2737.15 pcu/hour and the degree of saturation (DS) is 0.316 so that it is classified as a service level "B", while the average traffic flow at the unsignalized intersection is 2441.77 pcu/hour with a capacity of 4199.91 pcu/hour and a degree of saturation (DS) value of 0.581 so that it is classified in the "C" service level. The average turning time on roads is 8.04 seconds and at unsignalized intersections 6.94 seconds.

Untuk meningkatkan keawetan lapis perkerasan jalan, dikembangkan aspal modifikasi polimer antara lain dengan limbah styrofoam dan limbah PVC yang memiliki nilai viskositas lebih tinggi dari aspal konvensional. Keawetan perkerasan jalan sangat ditentukan oleh sifat volumetrik campuran yang merupakan persyaratan agar lapis perkerasan jalan dapat berfungsi sesuai dengan umur yang telah direncanakan. Tulisan ini bertujuan untuk mengkaji hubungan antara viskositas aspal modifikasi limbah styrofoam dan limbah PVC dengan sifat volumetrik campuran laston. Sifat volumetrik campuran laston yang dikaji adalah rongga di antara mineral agregat (VMA), rongga dalam campuran (VIM), rongga terselimuti aspal (VFB) dan berat jenis (bulk specific gravity). Untuk membuat aspal modifikasi, aspal penetrasi 60/70 dicampur dengan limbah styrofoam sebesar 0%, 2%, 4% dan 6% sedangkan limbah PVC digunakan sebesar 1%, 2%, 3% dan 4% terhadap berat aspal modifikasi tersebut. Berdasarkan analisa yang dilakukan disimpulkan bahwa penggunaan limbah styrofoam dan limbah PVC meningkatkan nilai viskositas aspal modifikasi. Peningkatan viskositas aspal modifikasi limbah styrofoam dan limbah PVC memperbesar nilai VMA dan VIM serta memperkecil nilai VFB dan berat jenis (bulk specific gravity). Secara umum viskositas aspal modifikasi limbah styrofoam dan limbah PVC berpengaruh sangat signifikan terhadap sifat volumetrik campuran laston.

Projects for the extension of the runway and other supporting facilities at the international airport of Lombok, Central Lombok, West Nusa Tenggara (NTB), where the implementation of the work is dominated by the use of heavy equipment to accelerate the completion of the work.The data obtained is by direct observation in the field. Analysis of the calculation of heavy equipment productivity, heavy equipment operating costs, revenue and profit were analyzed using the Bina Marga method. The heavy equipment studied in the field are excavators, dump trucks, motor graders, vibrator rollers, and water tankers.Productivity and the number of tools needed from the analysis results with those in the contract documents are appropriate, while the duration or time of work from the analysis results is more efficient. The hourly rental fee obtained from the calculation results for each heavy equipment, namely Excavator, is Rp. 694,260. Dump trucks of Rp. 753,762. Motor grader Rp. 642.188. Vibratorroller Rp. 551583.4. As for the Watertanker Rp. 384,646.04. The income and profit obtained from the use of heavy equipment on the ground work of the runway extension project at the Lombok international airport with a total of Rp. 38,279,148,142.96 and a profit of Rp. 3,469,922,558.05.

In the mixing process between asphalt and aggregate, absorption of asphalt by the aggregate occurs through the pores of the aggregate. The volume of asphalt not absorbed by the aggregate can be defined as effective asphalt content which determines the percentage of airspaces in the compacted mix. The proportion of voids formed in the mixture contributes to the durability of the mixture against temperature and climate conditions. This study aims to examine the effect of effective asphalt content and the asphalt film thickness on the voids proportion in asphalt mixture. Based on the analysis, it can be concluded that the particle size distribution of the aggregate affects the total surface area of the aggregate in the mixture and the pores of the aggregate affect the effective percent of asphalt content. Aggregate with a small grain size produced a larger total surface area of aggregate. Meanwhile the use of aggregate with small pores produced a higher effective percent of asphalt content. The higher the effective asphalt content and the asphalt film thickness, the larger the voids in mineral aggregate and the voids filled with bitumen. In contrast, the voids in the mixture decreases with increase the effective asphalt content and the asphalt film thickness. In all the voids proportions analyzed, the effective asphalt content and the asphalt film thickness have a very significant effect.