Akademik Veri Yönetim Sistemi
INTERNATIONAL JOURNAL OF PAVEMENT RESEARCH AND TECHNOLOGY, cilt.1, ss.1, 2024 (ESCI)
Asphalt pavements can be negatively affected by various factors such as traffic, environment, and chemical impacts during their service life. The most common types of damage include water damage, cracking, and rutting. Although various methods have been proposed in the literature for water damage, the AASHTO T283 (modified Lottman) method is the most widely used method in practice and research. However, some shortcomings have been highlighted in the literature regarding this method. One of these shortcomings is that only damages caused by water are taken into account, and the effects of clay transported to the pavement surface in various ways are not considered. Clays on the pavement surface can penetrate the pavement by forming a solution with water due to the effect of traffic and cause significant damage to the pavement by creating void pressure as a result of their spontaneous emulsification and swelling. This study aims to develop an alternative conditioning method using a water-clay solution and different soaking times instead of the AASHTO T283 conditioning method. Thus, it is aimed to investigate the effects of clay on asphalt pavements and to evaluate the effects of the Wetfix BE additive, which is an anti-stripping fatty acid derivative, in the mixtures. Control and Wetfix BE-modified mixtures were investigated in terms of rutting, low-temperature cracking, and water damage sensitivity with conditioned and unconditioned samples. The proposed alternative conditioning methods were found to create more severe damage levels compared to the AASHTO T 283 method.