Nurtanto D, Junaidi I, Wahyuningtyas W, Yunarni W. Comparison addition of rice husk ash and roof tile ash on fly ash-based geopolymer cement with portland cement. RIC [Internet]. 2021Jan.15 [cited 2024Jul.6];35(3):287-94. Available from: https://revistachilenadederecho.uc.cl/index.php/ric/article/view/27555