Lightweight concrete -- Congresses : Symposium of Materials Science and Chemistry III Selected, peer-reviewed papers from the 6th International Conference on Science and Technology (ICST 2020), September 7-8, 2020, Yogyakarta, Indonesia edited by Ahmad Kusumaatmaja, Dr. Tutik Dwi Wahyuningsih, Melati Khairuddean, Indriana Kartini, Dr. Roto Roto, Keisuke Ohto, Dwi Siswanta, Dr. Julius Motuzas and Dr. Taufik Abdillah Natsir
