Nama : Shakila Fuadah Lubis Nim : 1807113136 English paper’s Abstract STUDY OF DETERMINATION OF JOB MIX DESIGN FLEXIBLE PAVEMENT BY USING IT ASPHALT RECYCLED / RAP (RECLAIMED ASPHALT PAVEMENT) ABSTRACT Repairing pavement in Indonesia is often just merely coating the old pavement with a new pavement or better known as an overlay system. This of course resulted in the increase in road elevation due to the repeated coating process. Whether it's an out-of-town road or an inner-city street or a densely populated area can all cause many problems. The solution to avoid increasing the elevation of this road is to first dredge the surface layer of the old pavement by cold milling prior to the new pavement coating. The asphalt scratching is called the Reclaimed Asphalt Pavement (RAP). Recycling technology is an alternative solution because it is effective and efficient. Reuse (recycling) of asphalt and asphalt aggregates in addition to economics also supports the need for conservation of natural resources. The purpose of this research is to use recycled concrete asphalt with the addition of asphalt used as a pavement layer in the Asphalt Concrete-Wearing Course (AC-WC) mixture and to determine the value of stability, meltability, VIM, VMA, VFB. In this research the process of making hot asphalt test specimens and the process of testing asphalt hot specimens must be based on the requirements of the 2010 General Bina Marga Specification on Hot Asphalt Mixtures. This research begins with RAP testing, gradation and extraction, then testing the new aggregate is continued by making a hot asphalt mixture using asphalt modified elastomer / starbit modification, new aggregate and RAP. The results showed that the optimum asphalt content (KAO) was 5.85% for composition 1 with RAP 55%, 10% medium coarse aggregate (5-10), 33% fine aggregate (0-5) and 2% cement. So the addition of asphalt is the optimum bitumen content of the asphalt extracted from 5.80% 3.23% = 2.57%. So that the Reclamed Asphalt Pavement (RAP) in this study can be reused as a mixture of flexible road pavement materials. Whereas in composition 2 obtained optimum asphalt content (KAO) 5.85% with a composition of 15% Coarse aggregate (10-15), 48% medium coarse aggregate (5-10), 35% fine aggregate (0-5) and 2% cement. Keywords: RAP, hot asphalt mixture, 2010 General Bina Marga Specifications, Optimum Asphalt Levels. CIVIL ENGINEERING UNIVERSITY OF RIAU C CLASSES OF 2019 Nama : Shakila Fuadah Lubis Nim : 1807113136 English paper’s Abstract Sustainable Drainage System Method Based on Analysis of Maximum Rainfall in the Framework of Flood Mitigation in Panam Area, Pekanbaru City ABSTRACT Pekanbaru is the capital of Riau Province with a large population. This condition impacted to the decreasing of open green spaces due to conversion of land use into residential, offices, industrials and others. Consequently surface water run off increases during the rainy season and groundwater reserves decreases during the dry season. At this time Pekanbaru still apply the conventional drainage system, so the potential for flooding is high because the dimension of the drainage channel is too small. Pekanbaru was expected to manage the collection and calculation of the maximum rainfall data in the Panam and surrounding areas, then the sustainable drainage method consisting of rain water and prevent flood. The purpose of this system were to deacrese number of flood in Pekanbaru and to control the impact of the high rain for the drainage, and also to creat a new infiltration space for the run off. This study was using a few suitable methods for Pekanbaaru’s current condition. The methods are rain garden, infiltration strips, water roofs, rainwater tanks, cistern, swales, detention pond, infiltration trenches, eco-corridor and retention pond. These methods are selected based on various aspects such as functionality, technical criteria, ease of construction and maintenance. The design rain value is calculated by Pearson Log Log Frequency Distribution III. Based on the data and calculations, the final result obtained is the Q value of the plan was smaller than the flood discharge value. This shows that the watershed in Pekanbaru was still in the safe category and the runoff discharge does not have a major influence on the flood discharge in the watershed in Pekanbaru City. To minimize run off discharge in the future, it is necessary to take preventative measures that is Pekanbaru City can cope with and utilize the impact of run off with a sustainable drainage system that is suitable for the current situation in Pekanbaru City and is environmentally sound. Keywords: Sustainable Drainage System, hydrology formula, Rainfall CIVIL ENGINEERING UNIVERSITY OF RIAU C CLASSES OF 2019
