Kömür Baca Külü, Kireç ve Jips Ürünlerinden Yapı Malzemesi Yapımı

Abstract

Approximately 80 per cent and 20 per cent of the total solid waste resulting from the burning of lignite coal in thermal power plants are fly ash and bottom ash, respectively. This material is stored in natural terrain. In order to generate 1 kWh of power approximately 110 grams of ash is produced and a thermal power plant of 1000 MW capacity produces some 650 000 tons of ash on a yearly basis. About 20,000 MW of electricity is generated annually from thermal power plants operating in our country, resulting in 13 million tons of ash. Some 400 thousand tons of ash per year is being produced in Sivas-Kangal thermal power plant of 457 MW installed capacity. This material is not considered in any way. Sivas basin contains billions of tons of gypsum resources. In this study, production of lightweight building material was investigated experimentally by mixing different ratios of gypsum and lime with the Kangal thermal power plant fly ash. Required tests were carried out in accordance with relevant standards. It has been determined that D-17 labeled mass 70% plaster, 10% fly ash and 20% of the mixture have more optimal values ​​than the other mixtures. With the addition of different additives to the sample series labeled D-17, the pressure resistance increased from 92,8 kg / cm² to 113,8 kg / cm², while the water absorption ratios were reduced from 45,8% to 19,1% and to 6,9% with the addition of water repellent. It was found that there is an exponential relationship between Shore hardness value and bending strength (R 2 = 0,81) that all samples have a high correlation (R 2 = 0.95) linear relationship between density and bending strength.