Hot mix asphalt design with the usage of andesite and limestone between Korgun-Kurşunlu districts of Çankırı

Transportation structures generally require large costs and therefore the needs must be controlled meticulously. The construction of road networks must be designed in line with today's needs and future demands to ensure that projects are economical and profitable. Additionally, it should be built with sustainability and environmental awareness in mind. While this approach ensures that costs are kept under control, it also aims to use the transportation infrastructure effectively and efficiently during long time. This combines the principles of cost-effectiveness and sustainability, ensuring that transport projects respond to the needs of society and protect the environment. In the road construction process, selection of aggregates with different properties for different road layers is of great importance, as seen in the example of Korgun-Kurşunlu Road. Here, the combined use of Andesite and Limestone aggregates has been important in terms of balancing supply costs and technical requirements. This decision represents an economically effective solution while ensuring compliance with technical standards. The quality and suitability of the materials used in the design process are determined through a series of experiments and analyses. In this study, sieve analysis, specific gravity and water absorption tests were applied to determine the suitability of andesite and limestone. Additionally, methylene blue peeling and penetration tests were conducted in Los Angeles to measure the durability of the material. The specific gravity of bitumen was also applied and the stability and durability of the material was determined by the Marshall test. These comprehensive tests and experiments were conducted to evaluate the suitability and performance of andesite and limestone for on-road use. The data that achieved after the tests are milestone to determine the quality and suitability of the materials to be used in the road construction process.