Abstract

Within this research, carbonized clay, chamotte, as well as burn–out additives – widespread fillers (shredded paper and foamglass pellets) are used for the acquisition of porous ceramics, despite the fact that these fillers are not frequently used as burnable filler in traditional ceramics. The investigation of optimal mix content of raw materials, burning treatment was developed for obtaining improved mechanical properties of porous ceramics. The physical-mechanical properties of obtained ceramics were evaluated. Proportion of dry clay, shredded paper, foamglass pellets, chamotte and water used in the investigations varied, changing the amount of fillers in order to obtain the samples with better mechanical properties. Components of dry mixture for samples with shredded paper are dosed according to mass, where dry, milled clay was 63 – 69 %, shredded paper 2 – 12 %, water – 25%, but chamotte 0 – 4 %. When making porous ceramics using foamglass pellets as burnable filler, clay and water were used, where dry, milled clay was 57 – 69 %, water – 25 %, but foamglass pellets 6 – 18 %. Following results were obtained for the samples with shredded paper used as a filler: shrinkage after the drying from 1.33 % up to 8.78 %, shrinkage after burning – 3.33-11.56%, density – 1256.64-1567.97 kg/m3, water absorption – 9.23-16.70 % and compressive strength – 1.17-4.66 MPa. While for samples with foamglass pellets used as a filler following results were obtained: shrinkage after the drying – 2.22 – 3.08%, shrinkage after burning – 5.44 – 6.11 %, density – 861.71 – 1178.34 kg/m3, water absorption – 8.33 – 10.21 % and compressive strength – 1.15 – 1.94 MPa. Porous ceramic materials obtained within this research are breathing; they are not only thermally stable materials, but also resistant to thermal impacts, corrosion and are easy in processing. Obtained results of the research testify that these porous ceramics materials have great potential of application, but speaking about the material usage for load-bearing constructions, strength indicators must be improved by following researches using nano- additives, the fillers such as glass and fire clay, developing the technology of producing (mix contents, drying and burning processes) ceramics which improve compressive strength indicators of the sample. The following investigation will be devoted to developing more effective material with relation density/stiffness by controlling thermal conductivity properties. DOI: http://dx.doi.org/10.5755/j01.sace.8.3.7472

Highlights

  • Within last hundred years, ceramics as the material has changed a lot due to the modernization of traditional ceramics industry and implementation of new and unusual functions in modernized ceramics.Nowadays ceramics is modern material which can be successfully used in numerous spheres – from materials of ceramics up to social life, construction and other traditional products of ceramics up to the present time miniature computers, television, cars, planes and spacecraft and other modern technique developments

  • The goal of the given research is to obtain a porous ceramic material with specific features of strength and density, achieving a material that could be used to insulate buildings and burnable fillers, such as shredded paper and foamglass pellets were used for its production

  • Several types of porous ceramic materiaolsbtwaienreedodbutraiinngedredsuearirncgh.reCsoemaprcrehs.sCivoemsptrreensgstihvetessttrsenwgetrhe tests were performed, as well as their depdneestreiftorymrmainneeddd,w.aas twerelal bassothrpetiriodnenwsaitsy daentderwmatienreadb. sorption was Volumetric mass of samples where shreddedVpaopluemr ewtraics musaesds oafsstahmepbluesrnwahbelerefislhlerredindethdepaapmerowunats of 2-12%, reached 1256.64 – 1567.97 kgu/semd3,asbythreebsuprencatbivle fdilelcereiansteheoaf mvoluunmt oeftr2ic-1m2%as, sreiafcthheed amount of burnable filler are increased. 1256.64 – 1567.97 kg/m3, by respective decrease of volumetric mass if the amount of burnable filler are While the volumetric mass of samples winhcerreeasfeoda.mglass pellets were used as the burnable filler was from 861.71 kg/m3, if the amount of fillerWishi1le8 %th, eto 1v1o7lu8m.3e4trkicg/mm3a, sisf thoefamsaomunplteosf fowahmer-e glass pellets is 6 %

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Summary

Introduction

Ceramics as the material has changed a lot due to the modernization of traditional ceramics industry and implementation of new and unusual functions in modernized ceramics. Nowadays ceramics is modern material which can be successfully used in numerous spheres – from materials of ceramics up to social life, construction and other traditional products of ceramics up to the present time miniature computers, television, cars, planes and spacecraft and other modern technique developments. Ceramics materials are suitable for high temperatures because only high temperatures can affect ceramics materials. Those materials offer perfect features for corrosion and wear resistance (Indriksone 2013)

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