DESIGN OF EXPERIMENT OF GEOPOLYMER FROM METAKAOLIN BLENDED WITH FLY ASH
Keywords:
Design of experiment, geopolymer, metakaolin, fly ashAbstract
Portland cement is one of the most widely used materials. However, the production processof this material releases carbon dioxide gas, which is the main cause of the global warmingeffect. Nowadays, many researchers have been developing a sustainable cementreplacement material. Geopolymer is the outstanding candidate. It is an inorganicpolymeric material which is known as an environmentally sustainable material. In thispaper, a 2k full factorial design of experiment ( DOE) was studied and used to find theresponse or compressive strength of the geopolymer. The DOE factors were the oven curingtemperature and metakaolin to fly ash ratio. The results of the compressive strength of theoven curing temperature at 30°C were better than oven curing at a temperature of 60°C.By utilizing analysis of variance, these factors have been optimized to determine thecompressive strength. The results of the significant factors indicated that the mostimportant factor was the metakaolin to fly ash ratio. Moreover, this study further tested atan oven curing temperature 30°C different metakaolin to fly ash ratios: 0% , 10% , 30%,50%, 70%, and 100%. The most outstanding result was the 70% of metakaolin to fly ashratio. This research presents the design of the experiment for utilizing hazardous waste,i.e, fly ash as a valuable material.
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