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Abstrak :
Kondisi permukaan jalan merupakan salah satu penyebab penyumbang kecelakaan di jalan, skid resistance memiliki peran penting untuk menahan roda supaya tidak mudah tergelincir. Penelitian ini berfokus pada faktor limbah beton sebagai agregat menengah dan faktor suhu pada permukaan perkerasan jalan dengan tipe AC-WC batas tengah. Penelitian ini akan membandingkan pengaruh penggunaan limbah beton sebagai agregat menengah pada campuran AC-WC batas tengah dengan agregat alami pada campuran AC-WC batas tengah terhadap nilai skid resistance dengan perubahan suhu. Digunakan presentase limbah beton sebagai agregat menengah sebanyak 43%. Kadar aspal optimum yang digunakan untuk campuran agregat batuan sebanyak 8% dan untuk campuran limbah beton 9%. Pengujian ini digunakan alat british pendulum tester dengan variasi suhu yang digunakan pada penelitian adalah 26oC, 30oC, 35oC, 40oC, 45oC, dan 50oC. Pengujian juga digunakan 2 kondisi berbeda, yaitu kondisi standart dan kondisi immersion dalam bak perendam selama 24 jam dengan suhu 60oC. Dari hasil penelitian didapatkan bahwa nilai skid resistance campuran limbah beton lebih tinggi dibandingan dengan campuran agregat batuan, dengan nilai skid resistance yang akan semakin menurun jika suhu permukaan semakin, tingkat korelasi antara nilai skid resistance dengan suhu adalah sedang. ......The condition of the road surface is one of the causes of accidents on the road, skid resistance has an important role to keep the wheels from slipping easily. This research focuses on the recycle concrete aggregate factor as intermediate aggregate and the temperature factor on the surface of road pavement with the middle limit type AC-WC. This study will compare the effect of using recycled concrete aggregate as intermediate aggregate in the middle limit AC-WC mixture with natural aggregate in the middle limit AC-WC mixture on the value of skid resistance with temperature changes. The percentage of recycled concrete aggregate as an intermediate aggregate is used as much as 43%. The optimum asphalt content used for a mixture of rock aggregate is 8% and for a mixture of recycled concrete aggregate 9%. This test used a British pendulum tester with temperature variations used in this study were 26oC, 30oC, 35oC, 40oC, 45oC, and 50oC. The test also used 2 different conditions, namely standard conditions and immersion conditions in an immersion bath for 24 hours at a temperature of 60oC. From the results of the study, it was found that the skid resistance value of the recycled concrete aggregate mixture was higher than that of the natural aggregate mixture, with the skid resistance value decreasing as the surface temperature increased, the correlation level between the skid resistance value and the temperature was moderate.

Abstrak :
Untuk mengurangi penggunaan material alam, limbah beton digunakan sebagai pengganti agregat batu alami. Penambahan limbah plastik LDPE dalam campuran aspal juga dilakukan sebagai upaya peningkatan kualitas aspal. Penggunaan material alternatif pada campuran aspal perlu memperhatikan aspek keselamatan yakni kemampuan agregat pada lapisan aspal untuk menahan gaya gelincir permukaan jalan pada segala kondisi cuaca. Dalam penelitian ini mengkaji pengaruh penggunaan agregat limbah beton dan penambahan plastik LDPE pada campuran aspal terhadap nilai skid resistance. Penelitian diawali dengan pembuatan benda uji campuran ACWC dengan agregat RCA pada variasi kadar aspal 7%, 7.5%, 8%, 8.5%, dan 9% yang dihasilkan KAO pada 9%. Untuk menghilangkan kadar mortar pada agregat RCA dilakukan peremajaan dengan pencucian dan penggosokan. Penelitian dilanjutkan dengan mencari kadar plastik optimum yang didapatkan pada kadar plastik sebesar 5%. Pengujian skid resistance dilakukan menggunakan alat British Pendulum Tester (BPT) pada variasi suhu 26˚C, 30˚C, 35˚C, 40˚C, 45˚C, dan 50˚C. Pengujian dilakukan dengan dua jenis uji yakni skid resistance standard dan immersion. Didapatkan hasil penggunaan agregat RCA dan penambahan plastik LDPE menaikan nilai skid resistance. Nilai SN tertinggi didapat 58,5 pada suhu normal (26˚C) dan nilai terendah 51,6 pada suhu tinggi (50˚C). ......To reduce the use of natural materials, waste concrete can be used as a substitute for natural aggregates (NA). The addition of LDPE plastic waste in asphalt mixtures is also carried out to improve asphalt quality. The use of alternative materials in asphalt mixtures needs to pay attention to safety aspects, to withstand the sliding force of the road surface in all weather conditions. This study examines the effect of the use of concrete waste aggregates and the addition of LDPE plastic to the asphalt mixture on the value of skid resistance. The study began with the manufacture of a mixture of ACWC specimens with RCA aggregates at variations in asphalt content of 7%, 7.5%, 8%, 8.5%, and 9% produced by KAO at 9%. RCA aggregates have previously been rejuvenated by washing and rubbing to remove the mortar content. The research was continued by finding the optimum plastic content obtained at a plastic content of 5%. Skid resistance testing was carried out using the British Pendulum Tester (BPT) at various temperatures of 26 ˚C, 30 ˚C, 35 ˚C, 40 ˚C, 45 ˚C, and 50 ˚C. The test is carried out with two types of tests, standard skid resistance and immersion skid resistance. It was found that the use of RCA aggregate and the addition of LDPE plastic increased the value of skid resistance. The highest SN value was 58.5 at normal temperature (26˚C) and the lowest value was 51.6 at high temperature (50˚C).