TY - GEN A1 - Abdelaziz, Mohamed A1 - Vukorep, Ilija A1 - El-Mahdy, Deena T1 - Exploring extreme 3D printed clay overhangs with integrated active hot air drying system on robotic arm T2 - Proceedings of the 42th International Symposium on Automation and Robotics in Construction (ISARC) N2 - 3D printing has gained significant popularity in construction in recent years, along with a growing focus on earth-based materials. These materials must adhere to certain principles to ensure printability and extrudability, allowing for good consistency during the printing process. This would need extra water, resulting in a wet mixture that could decrease the production printing rate per day and limit overhang structures due to the wet materials. One challenge facing these materials is their slow drying process, especially in low temperatures and humid climates. However, the strength and stiffness of these materials are gained by time when water evaporates. Given the limited studies on the drying process during 3D printing, this research aims to explore the structural stability of maximum support-free overhangs using a custom-designed heating system based on Active Hot Air Drying System (HADS) that mimics sun drying. This system accelerates and aids the drying process of the layers, ensuring greater structural stability without deformation. According to the results, the contentious heating system increased layer stability by reaching more layers at once. The maximum overhang reached was an angle of 50 degrees before failure at 60 degrees. In conclusion, the research highlighted and promoted the use of earth-based materials and offered some solutions to ensure that printed buildings could be dried fast. This is a solution to establish earth as a reliable material in structures in a contemporary way with the use of 3D printing. KW - Additive manufacturing KW - Automation KW - 3D printing KW - Earthen materials KW - Support-free overhang Y1 - 2025 SN - 978-0-6458322-2-8 U6 - https://doi.org/10.22260/ISARC2025/0042 SN - 2413-5844 SP - 312 EP - 317 PB - International Association for Automation and Robotics in Construction CY - Montreal, Canada ER - TY - GEN A1 - Fritzsche, Lukas A1 - Starke, Rolf A1 - Felbrich, Benjamin A1 - Vukorep, Ilija T1 - Evaluation framework for indoor localization systems in the AEC environment T2 - ISARC 2025 : proceedings of the 42th International Symposium on Automation and Robotics in Construction N2 - Accurate spatial localization is critical in the construction industry, indoor robotics, and other applications involving actor movement within buildings. This paper introduces a combined software and hardware framework designed to evaluate indoor localization systems leveraging optical tracking integrated with a ROS communication system. It supports recording location data, aligning trajectories and evaluating the recorded samples against the ground truth allowing for real world comparison within a custom setup. While it is designed to evaluate any localization system, a presented case study compares two established SLAM algorithms regarding their suitability for an AEC application. KW - Localization evaluation KW - Indoor localization KW - Mobile robotic KW - SLAM KW - ROS Y1 - 2025 SN - 978-0-6458322-2-8 U6 - https://doi.org/10.22260/ISARC2025/0067 SN - 2413-5844 SP - 508 EP - 515 PB - International Association on Automation and Robotics in Construction CY - Montreal, Canada ER -