Use of Coal Waste as Fine Aggregates in Concrete Paving Blocks

The aim of this work was to study the use of coal waste to produce concrete paving blocks. The methodology considered the following steps: sampling of a coal mining waste; gravity separation of the fraction with specific gravity between 2.4 and 2.8; comminution of the material and particle size analysis; technological characterization of the material and the production of concrete paving blocks. The results showed that the coal waste considered in this work can be used to replace conventional sand as a fine aggregate for concrete paving blocks. This practice can collaborate in a cleaner coal production.

[1]  P. K. Mehta.  Concrete: Structure, Properties, and Materials , 1992 .

[2]  Erika Holt,et al.  Use of gasification residues in compacted concrete paving blocks , 2006 .

[3]  Geraldo Milioli.  Mining, Environment, and Development in Southern Santa Catarina, Brazil: Non-Governmental Organization, “Terra Verde” and Its Ideas for Sustainability , 2011 .

[4]  D. Wattanasiriwech,et al.  Paving blocks from ceramic tile production waste , 2009 .

[5]  K. Day,et al.  Aggregates for concrete , 2013 .

[6]  Luis Enrique Sánchez,et al.  GIS applied to determine environmental impact indicators made by sand mining in a floodplain in southeastern Brazil , 2002 .

[7]  D. O. Lemeshev,et al.  Utilization of Coal-Mining Waste in the Production of Building Ceramic Materials , 2004 .

[8]  Michel Aubertin,et al.  Integrated mine tailings management by combining environmental desulphurization and cemented paste backfill: Application to mine Doyon, Quebec, Canada , 2008 .

[9]  M. Alexander,et al.  Aggregates in Concrete , 2005 .

[10]  J. L. Broadhurst,et al.  Mitigating the generation of acid mine drainage from copper sulfide tailings impoundments in perpetuity: A case study for an integrated management strategy , 2010 .

[11]  T. M. Gilliam,et al.  A literature review of mixed waste components: Sensitivities and effects upon solidification/stabilization in cement-based matrices , 1994 .

[12]  Chi Sun Poon,et al.  Paving blocks made with recycled concrete aggregate and crushed clay brick , 2006 .

[13]  Krystyna M. Skarżyńska,et al.  Reuse of coal mining wastes in civil engineering—Part 2: Utilization of minestone , 1995 .

[14]  Liu Zhenling,et al.  Recycling utilization patterns of coal mining waste in China , 2010 .

[15]  Tubino,et al.  Characterization of a Coal Tailing Deposit for Zero Waste Mine in the Brazilian Coal Field of Santa Catarina , 2010 .

[16]  R. Finkelman,et al.  Depositional setting, petrology and chemistry of Permian coals from the Paraná Basin: 2. South Santa Catarina Coalfield, Brazil , 2010 .

[17]  P. Bowen,et al.  Changes in portlandite morphology with solvent composition: Atomistic simulations and experiment , 2011 .