%0 Journal Article %A Konstantinos Sotiriadis and Olesia Mikhailova %D 2015 %J International Journal of Materials and Metallurgical Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 100, 2015 %T Study of Fly Ash Geopolymer Based Composites with Polyester Waste Addition %U https://publications.waset.org/pdf/10000992 %V 100 %X In the present work, fly ash geopolymer based composites including polyester (PES) waste were studied. Specimens of three compositions were prepared: (a) fly ash geopolymer with 5% PES waste; (b) fly ash geopolymer mortar with 5% PES waste; (c) fly ash geopolymer mortar with 6.25% PES waste. Compressive and bending strength measurements, water absorption test and determination of thermal conductivity coefficient were performed. The results showed that the addition of sand in a mixture of geopolymer with 5% PES content led to higher compressive strength, while it increased water absorption and reduced thermal conductivity coefficient. The increase of PES addition in geopolymer mortars resulted in a more dense structure, indicated by the increase of strength and thermal conductivity and the decrease of water absorption. %P 550 - 553