By a News Reporter-Staff News Editor at Energy Weekly News -- Researchers detail new data in Fuel Research. According to news reporting originating in Jaen, Spain, by VerticalNews journalists, research stated, "This paper presents the results of research on the effect of adding bottom ash from the combustion of plant biomass to construction material, substituting the ash for Portland cement in proportions ranging from 10% to 90% in mass. After determining the physical, chemical, and mineralogical character of the raw materials, sample building blocks were formed through compression at 20 MPa."
The news reporters obtained a quote from the research from the University of Jaen, "The experimental program included a wide range of testing methods such as mechanical strength, XRD, porosity, microstructure, freeze-thaw, thermal conductivity, and environmental safety (heavy metal leachability). The results demonstrate that the addition of bottom ash increases the material's porosity, thereby decreasing its thermal conductivity and compressive strength. The mixture with a 1:1 Si/Ca ratio shows the best mechanical characteristics (61.11 MPa) with acceptable thermal conductivity value (0.773 W/mK) and could potentially be used in products such as building blocks, since partially replacing the cement with ash produced samples based on criteria of the EN standards."
According to the news reporters, the research concluded: "Heavy metal concentration in the leachates of the bottom ash and samples formed are far lower than those recommended in the Spanish legislation (OM AAA/661/2013) and US-EPA standard."
For more information on this research see: An evaluation of bottom ash from plant biomass as a replacement for cement in building blocks. Fuel, 2014;118():272-280. Fuel can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Fuel - www.elsevier.com/wps/product/cws_home/30420)
Our news correspondents report that additional information may be obtained by contacting B. Carrasco, University of Jaen, Polytechnic Sch Linares, Dept. of Chem Environm & Mat Engn, Jaen 23700, Spain. Additional authors for this research include N. Cruz, J. Terrados, F.A. Corpas and L. Perez.
Keywords for this news article include: Jaen, Spain, Europe, Fuel Research
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