Corrigendum to Green geopolymer cement with dry activator from geothermal sludge and sodium hydroxide [J. Clean. Prod., vol. 293, 15 April 2021, 126143]. (10th April 2022) - Petrus, Himawan Tri Bayu Murti; Fairuz, Faaza Ihda; Sa'dan, Naala; Olvianas, Muhammad; Astuti, Widi; Jenie, S.N. Aisyiyah; Setiawan, Felix Arie; Anggara, Ferian; Ekaputri, Januarti Jaya; Made Bendiyasa, I.