Physical and mechanical properties of synthetic beams from high density polyethylene wasteRestu Faizah, Yoga Aprianto Harsoyo, Wahyu Arif Pratama, Raihan Nur Fathiya and Cahyo BudiyantoroE3S Web Conf., 429 (2023) 05023DOI: https://doi.org/10.1051/e3sconf/202342905023