Scholarly record
RECIRCULATION OF ASH AND SLAG WASTE AT THE CERAMIC BRICK PRODUCTION
Abstract
The flue ash and slags are accounting a significant part of thermal electric complexes waste, which operating on solid energy fuel. Most of this by-product does not find further application, accumulating in ash-disposal dump areas. Meanwhile, ash-and-slag wastes can widely use as raw materials for the production of building materials. Considering the world trend towards an increase in the share of waste secondary use, it is necessary to forecast their subsequent processing in Russia too. The purpose of work was modeling composition of ceramic charge for Shelangovsk brick factory using Kazan CHP (Combined heat and power plant) furnace-waste as filler. For this, ash and slag wastes were mixed in various amounts with the working charge and with the initial raw clay material. After molding of ceramic small brick, samples were fired at ? = 980В°? and then the end products were tested for strength. The results showed that addition 10, 15 and 20 percent of ash to working charge are consistently increasing the strength of ceramic products in compression tests. During the process of manufacturing ceramic products tested changes of their unit-weight and heat setting degree. All products withstand a load of at least 100 MPa. The maximum value of strength is achieved when introducing into the working charge 20% of the ash additive. Simultaneously with the increase in mechanical strength by 12-13%, unit-weight is decreases. At working with natural clay, the ash additive is not so effective. After carrying out physical and mechanical tests, the ceramic products were examined with an SEM and thermal X-ray analysis. The aim of the research was to establish how the ash additives affect the processes of phase transformations occurring in the batch. To determine specificity of reactions between waste and charge minerals was used X-ray analysis. Results are showed that ash and slag waste behaves as active fillers and forming new mineral phases. The obtained results show that the use of ash wastes of Kazan CHP as mineral fillers of ceramic batch is quite acceptable. They introduce improved for physical and mechanical characteristics of wall bricks while reducing their weight. At the same time, the ash additive takes an active part in mineral formation processes, increasing the amount of crystallization contacts in ceramic products.
Publication Impact Profile
Publication details
References10
Vasyanov G.P., Gorbachev B.F., Krasnikova E.V., Sadykov R.K. and Kabirov R.R. Clay Fusible Ceramic Material of Tatarstan (Conditions of the Resource Base and Experience in Application of Light-Burning Multimineral Clays) / Georesursy, Russia, vol. 4/ issue 63, pp 44-49, 2015.
Semyonov A.A. Ceramic Wall Materials Market: Results of 2014 and Forecast for 2015 / Stroitel`nye Materialy, Russia, vol 4, pp 3-5, 2008.
Raut S.P., Ralegaonkar R.V. and Mandavgane S.A. Development of sustainable construction material using industrial and agricultural solid waste: A review of waste-create bricks / Construction and Building Materials, Russia, vol 25, pp 4037-4042, 2011.
Zhang L. Production of bricks from waste materials – A review / Construction and Building Materials, Russia, vol. 47 pp 643-655, 2013.
Muñoz Velasco P., Morales Ortíz M.P., Mendívil Giry M.A. and Muñoz Velasco L. Fired clay bricks manufactured by adding wastes as sustainable construction material – A review / Construction and Building Materials, Russia, vol. 63, pp 97-107, 2014.
Monteiro S.N. and Fontes Vieira C.M. On the production of fired clay bricks from waste materials: A critical update / Construction and Building Materials, Russia, vol. 68, pp 599-610, 2014.
Pavlov V.F. The method of involving industrial waste in construction materials / Stroitel`nye Materialy, Russia, vol. 8, pp 28-30, 2003.
Cultrone G. and Sebastián E. Fly ash addition in clayey materials to improve the quality of solid bricks /Construction and Building Materials, Russia, vol. 23, pp 1178-1184, 2009.
Naganathan S., Mohamed A.Y.O. and Mustapha K.N. Performance of bricks made using fly ash and bottom ash / Construction and Building Materials, Russia, vol. 96, pp 576-580, 2015.
Sena da Fonseca B., Galhano C. and Seixas D. 2015 Technical feasibility of reusing coal combustion by-products from a thermoelectric power plant in the manufacture of fired clay bricks / Applied Clay Science, UK, vol. 104, pp 189-195, 2015.
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.
