Pengaruh Variasi Suhu Perendaman Dan Durasi Perendaman Terhadap Durabilitas Lapis Tipis Aspal Beton (HRS-WC) Menggunakan Material Dari Quarry Talau

JAGA, Yuliana Antrina (2025) Pengaruh Variasi Suhu Perendaman Dan Durasi Perendaman Terhadap Durabilitas Lapis Tipis Aspal Beton (HRS-WC) Menggunakan Material Dari Quarry Talau. Undergraduate thesis, Universitas Katolik Widya Mandira.

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Abstract

Indonesia is a tropical country with two seasons, which causes pavements to be frequently submerged by water, especially during the rainy season. Climate factors, weather, and the characteristics of the constituent materials greatly affect the durability of the pavement. This research was conducted to study the effect of soaking duration and temperature on the durability of HRS-WC mixtures by utilizing aggregate materials from Talau Quarry. The material had to be tested first to determine its physical characteristics, where the results showed that the aggregate was weak to abrasion but had a fairly low water absorption rate, making it potentially good in maintaining the stability of the asphalt-aggregate bond in wet conditions. The aggregate was used as a constituent of the HRS-WC mixture, and then tested using the Marshall method at the planned asphalt content of 6%, 6.5%, 7%, 7.5%, and 8%, which resulted in an optimum asphalt content (KAO) of 7.25%. The test specimens were then immersed with variations in duration of 30 minutes, 24 hours, and 48 hours, and temperatures of 40°C, 60°C, and 80°C. The durability level was measured based on the parameters of the Index of Residual Strength (IKS), the First Durability Index (IDP), and the Second Durability Index (IDK). The results showed that increasing the temperature and soaking duration decreased the durability value, where the IKS at 80°C did not meet the minimum limit of ≥ 90% according to the standards of the Direktorat Jenderal Bina Marga (2020). Meanwhile, the low temperature of 40°C showed a slight increase in IDP, but not significant enough to have a major impact on overall pavement performance. This research shows the importance of protecting the mixture against waterlogging and heat in actual conditions, the use of additives in the mixture, and the selection of materials that are suitable for the needs of the field.

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