Open AccessDesign and fabrication of advanced materials from Illinois coal wastes. [Quarterly] technical report, September 1--November 30, 1994
Author(s) -
V. M. Malhotra,
" Wright
Publication year - 1994
Language(s) - English
Resource type - Reports
DOI - 10.2172/26604
Subject(s) - fly ash , coal combustion products , materials science , fabrication , coal , differential scanning calorimetry , scrubber , raw material , combustion , waste management , metallurgy , mineralogy , composite material , chemistry , engineering , medicine , alternative medicine , pathology , physics , organic chemistry , thermodynamics
The main goal of this project is to develop a bench-scale procedure to design and fabricate advanced brake and structural composite materials from Illinois coal combustion residues. During the first quarter of the project, the thrust of the work was directed towards setting up the experimental facilities and undertaking preliminary tests to gauge the ability of coal tar derived binder in fabricating the brake skeletons. In addition systematic scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and differential thermal analysis (DTA) were conducted on PCC fly ash (Baldwin), fly ash (ADM), FBC fly ash, FBC spent bed bottom ash, bottom ash (ADM), and scrubber sludge residues to characterize their geometrical shape and thermal stability. The PCC fly ash particles being highly spherical in shape and thermally inert up to 1100{degrees}C will make an excellent raw material for our composites. This is born out by fabricating brake skeletons from PCC fly ash colloids. Unlike the PCC fly ash and FBC fly ash, the scrubber sludge particles are not suitable hosts for our brake lining materials because of a whisker-like particle structure. Six different compositions of various combustion residues were tested in the fabrication of brake skeletons, and our tar derived binder shows great promise in the fabrication of composite materials