Use of Boron Waste in Fly Ash Based Geopolymer Bricks

Abstract

In study, it is targeted to produce geopolymer bricks by using Eskişehir Kırka region boron waste and Seyitömer thermal power plant waste fly ash. It was aimed to produce geopolymer brick, which is more durable than normal brick physically and mechanically and has thermal insulation properties. Within the scope of the study, the rate of fly ash was kept constant as 10%, and geopolymer bricks were produced by using different ratios (10%, 20%, 30%, 40%, 50% and 60%) of boron waste. In order to determine the physical properties of the produced brick samples, waterloged weight per unit of volume, water absorption (by weight), porosity, heat transmission coefficient of solid objects tests applied. As a result of the study, it was observed that with the increase in the amount of boron waste, waterloged weight per unit of volume, water absorption (by weight), porosity and heat transmission coefficient values of solid objects decreased. It was determined that the compressive strength of the samples increased up to 50% and the boron waste substitution decreased by 60%. It was observed that the flexural strength values were decreased up to 50%, and the boron waste substitution were done. For the determination of its mechanical properties, compressive strength and bending tensile strength tests were of 60% increased. In addition, it was concluded that there is no harm in using boron waste and fly ash substitution at certain rates in the production of bricks, and this situation will have positive effects on the environment and human health.