One attempt to avoid early pavement damage is to enhance asphalt quality as an aggregate binder. The addition of polymeric materials is frequently used to improve asphalt quality, particularly asphalt rigidity. Increased rigidity will enhance pavement performance against rutting, bleeding, and swelling, particularly in summer with a relatively elevated temperature. This study uses High Density Polyethylene (HDPE) polymer waste as a modifier in a mixture of Asphalt Concrete-Wearing Course (AC-WC) which also utilizes RAP waste as a coarse aggregate substitute. The aim of this study is to analyse the to analyse effect of waste materials on the AC-WC performance. Analysis was carried out after the Marshall test to obtain the values of air void, Void in Mineral Aggregate (VMA), Void Filled with Asphalt (VFA) stability, flow and Marshall Quotient (MQ). Marshall samples prepared with dry method modified HDPE asphalt binder, given a limit on the specifications of the number of each specimen. The percentage of HDPE as asphalt mixture is 0%, 1.6%, 1.8%, 2.0%, 2.2%, and 2.4% asphalt weight. The optimum asphalt level (KAO) used is 5.25%. Marshall test shows that the addition of 1.6% of HDPE in the AC-WC mixture and RAP can increase mixture stability by 1.74% and flow by 3.69%.

Penelitian ini bertujuan untuk menganalisis tingkat harapan serta tingkat kinerja pelayanan bus kota di Surabaya menurut penumpang bus kota. Berkaitan dengan upaya peningkatan kualitas pelayanan, penelitian ini juga menganalisis faktor yang harus diprioritaskan, faktor yang harus dipertahankan, faktor dengan prioritas rendah dan faktor yang berlebihan. Indikator pelayanan sebanyak 13 variabel yang dikembangkan dari dimensi SERVQUAL. Metode analisis yang digunakan adalah Importance Performance Analysis (IPA) dengan jumlah responden sebanyak 120 penumpang yang diambil dari 6 trayek yang saat ini beroperasi. Hasil analisis gap menunjukkan bahwa tidak ada satupun indikator yang memenuhi harapan penumpang. Penumpang berasumsi bahwa kualitas pelayanan bus kota di Surabaya berada pada level cukup memuaskan. Faktor ketersediaan AC (Air Conditioner) merupakan faktor yang dianggap penting oleh pelanggan tetapi pada kenyataannya faktor ini masih jauh dari harapan. Faktor inilah yang harus mendapatkan prioritas utama dari operator untuk dibenahi agar kualitas pelayanan dapat meningkat sesuai harapan penumpang. Kata kunci: importance performance analysis (IPA), pelayanan, tingkat kepuasan.

Asphalt quality improvement efforts starts from the construction of buildings, infrastructure and roads continue to be developed. This development will increase the need for material used. This study aims to (1) determine the effect of bagasse ash filler with concrete waste as a coarse aggregate on Marshall characteristics on asphalt concrete mixture, in terms of density, VIM (void in the mix), VMA (voids in mineral aggregates), VFA (void filled with asphalt), stability, flow (melting), and MQ (Marshall quotient). (2) As well as knowing the suitability of the Marshall test results with the requirements of Bina Marga 2010. This study uses an experimental testing method implemented by making test specimens following existing standards and conditions, as well as the use of bagasse ash as filler material and concrete waste as a substitute for coarse aggregate in asphalt mixture, with a variation of the percentage using bagasse ash filler with 0%, 5%, 10%, and 15% content. For each treatment, three samples were made. The results of testing the concrete asphalt mixture are: (1) density 2.16 gr/cc, VIM 11.56%, VMA 17.39%, VFA 33.91%, stability 3263.92 kg, flow (melting) 2.03 mm, MQ 2353.70 kg / mm. (2) Test results for all specimens, with the addition of bagasse ash filler as asphalt mixture filler, have met the 2010 Bina Marga requirements, as a minimum requirement for the highway, with stability values of more than 800 kg and flow values between 2 mm to 4 mm.

Urban road network typically consists of many intersections which commonly lead to traffic problems. In relatively low traffic, a simple priority intersection will be sufficient and lead no traffic problem without necessarily implement traffic lights, roundabout or others. In an urban area where traffic demands are high, intersections need to be treated with an accurate traffic engineering approach. There are many different approaches to reduce the traffic problem in intersection including traffic light, roundabout, or interchange. Cimahpar Raya street and Indobaso intersections are urban areas in Bogor city with the high demand for transportation and often having a congestion problem in peak hour. The Office of Public Works and Spatial Planning (PUPR) of Bogor city plans to develop and change the Indobaso intersection to be a roundabout, while also increasing the lane width of the approaching roads. This study was conducted to assess the performance changes of the Indobaso intersection improvement by developing a traffic model of the intersection. The planned roundabout and lane width improvement significantly reduce the traffic delays by 90,07%, reduce travel time by 51,76%, improve average speed by 83,77%, and reduce the traffic density by 88,54% compared to the current condition of the intersection which lacks required lane road width and maneuver area.

The earn value method (EVM) has been widely recognized and proven to provide an overview of the performance of construction project implementation from the aspects of time and schedule. Specifically EVM is used to evaluate the progress of the work, so identification of deviations both on time and cost can be done early.The Earn Schedule (ES) method is an elaboration to the schedule analysis on the EVM method. This study aimed to examine and compare the capability of the two methods, namely the earn value and earn schedule methods in predicting the completion time of construction project. The research used the real data from the Unesa building project. The results showed that at week 9, the value of CPI was 1.15 or had a variant cost of 13.32% lower than the planned budget. While for the schedule aspect, both methods indicated a delay in the project with the delay variant of 0.16%. The ES method is able to give information of how long the delay in time unit of 0.02 week.Keywords: accuration, actual cost, earn value, earn schedule,  planed value  ABSTRAKMetode nilai hasil (EVM) telah dikenal luas dan terbukti mampu memberikan gambaran kinerja pelaksanaan proyek konstruksi dari aspek waktu dan jadwal. Secara khusus EVM digunakan untuk mengevaluasi progress pekerjaan sehingga dapat dilakukan identifikasi lebih awal terhadap penyimpangan baik terhadap waktu maupun biaya. Metode Earn Schedule (ES) merupakan pendalaman terhadap analisis jadwal pada metode EVM. Penelitian ini dilakukan untuk menguji dan membandingkan kemampuan dua metode yaitu metode earn value dan earn schedule dalam memprediksi waktu penyelesaian proyek konstruksi. Data penelitian menggunakan data pelaksanaan dari pembangunan proyek bangunan gedung di Unesa. Hasil penelitianmenunjukkan bahwa pada minggu ke-9, nilai CPI adalah sebesar 1,15 atau memiliki varian biaya sebesar 13,32% lebih rendah dari anggaran yang direncanakan. Sedangkan dari aspek jadwal, kedua metode mengindikasikan bahwa terjadi keterlambatan pada proyek yaitu dengan varian keterlambatan sebesar 0,16% . Metode ES mampu memberikan informasi berapa lama keterlambatan yang terjadi dalam satuan waktu yaitu sebesar 0,02 minggu. Kata Kunci: akurasi, biaya aktual, nilai hasil, earn schedule, biaya rencana