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"ABSTRAKKekesatan permukaan perkerasan jalan (skid resistance) dapat mempengaruhi keselamatan dan kenyamanan pengguna jalan. Kekesatan permukaan beton aspal memberikan gaya gesek pada roda kendaraan untuk menghindari terjadinya slip atau tergelincir, baik di waktu hujan/basah maupun di waktu kering. Pada penelitian ini dikhususkan untuk pen gujian skid resistance menggunakan alat Skid Resistance Tester / British Pendulum Tester . Analisis dilakukan untuk mengevaluasi tingkat kekesatan permukaan aspal beton AC-WC Pen 60/70 dan aspal Buton Natural Asphalt (BNA) blend 75/25 yang memiliki komposisi agregat yang sama. Pengujian dilakukan pada kondisi permukaan basah.dengan variasi temperatur dari suhu 30 ºC-55 ºC. Penambahan BNA pada Laston Pen 60/70 yang menyebabkan turunnya nilai penetrasi aspal, memberikan nilai skid resistance lebih tinggi dibanding pada Laston Pen 60/70 , dan nilai skid resistance menurun seiring kenaikan temperatur permukaan.

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ABSTRACTPavement skid resistance on the surface can affect the safety and convenience of road users. This value gives the frictional forces on the wheels of vehicles to avoid the occurrence of slip, either in the rain / wet or dry. In the current study focused for skid resistance testing using tools Skid Resistance Tester / British Pendulum Tester. Analyses were performed to evaluate the level of surface roughness of asphalt concrete AC-WC bitumen 60/70 and 75/25 Buton Natural Asphalt (BNA) blend having the same aggregate composition. Tests carried out on the wet surface conditions with a temperature variation of the temperature of 30 º C-55 º C. The addition of BNA on AC-WC bitumen 60/70 which cause a decline in the value of penetration asphalt, providing skid resistance value is higher than in AC-WC bitumen 60/70, and the skid resistance value decreases with increase in surface temperature."

"Overlaid asphalt onto concrete pavement is another alternative than regrooving; it creates a composite layer of concrete-asphalt. Monolithic concrete-asphalts depend on bonding at its interface and affected by direction, space and depth of grooving, quantity and may type of tack coat used. This research aimed to know the effect of grooving direction to shear resistance of the interface on concrete-asphalt composite layer. Three types of grooving: transversal, angle of 45° and longitudinal, used. Emulsied asphalt of CRS-I and cut back asphalt of RC-70 by quantity of 0, 2 l/m2and 0, 6 l/m2 applied as a tack coat. As the results, it is known that shear resistance of the interface on concrete-asphalt composite layer affected not only on grooving direction but also quantity of tack coat and normal force applied. For concrete-asphalt composite layer, the highest shear resistance given by transversal grooving direction and 45° angle of grooving direction is better than longitudinal grooving. For all grooving direction, CRS-I emulsified asphalt has a higher shear resistance than RC-70 cut back asphalt and changing of adhesiveness of RC-70 caused of normal force is more susceptible than CRS-I."

"Dalam rangka meningkatkan pembangunan jalan beton semen dengan metoda pracetak yang lebih efisien dengan mutu yang lebih terjamin, Pusat Litbang Jalan dan Jembatan telah mengkaji perkembangan jalan beton pracetak di beberapa negara, melakukan pemantauan perkerasan jalan beton pracetak di jalur Busway dan ruas jalan Cakung - Cilincing..."