Satakhun Detphan, Tanakorn Phoo-ngernkham, Vanchai Sata, Chudapak Detphan, and Prinya Chindaprasirt. 2018. “PORTLAND CEMENT CONTAINING FLY ASH, EXPANDED PERLITE, AND PLASTICIZER FOR MASONRY AND PLASTERING MORTARS”. GEOMATE Journal 15 (48):107-13. https://geomatejournal.com/geomate/article/view/897.