D.S, K. K., & YUONO, T. (2018). COMPRESSIVE STRENGTH OF GEOPOLYMER LIGHTWEIGHT CONCRETE WITH COMPARISON OF RICE HUSK ASH AND ALKALI ACTIVATOR 50% -50% IN CURING TIME VARIATIONS. Jurnal Teknik Sipil Dan Arsitektur, 23(27). Retrieved from http://ejournal.utp.ac.id/index.php/JTSA/article/view/751