Fabricated carbon from minimally processed coke and coal tar pitch as a carbon-sequestering construction material
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We report the mechanical fracture strength and physical properties of fabricated carbons made from pulverized metallurgical coke bonded with coal tar pitch, followed by pyrolysis. Tensile strength from diametral compression of discs ranged from 9.7 ± 1.3 MPa for materials bonded with 13 wt% pitch to 63 ± 7.1 MPa for materials bonded with 40 wt% pitch. Materials made by dry mixing pulverized pitch with coke were comparable with materials made by mixing coke powder with a solution of pitch in toluene. Strength increased with pyrolysis temperature. Pyrolyzed pitch-bonded coke was significantly stronger and lighter than ordinary Portland cement concrete.
KeywordsCoke Oven Petroleum Coke Indirect Tensile Strength Metallurgical Coke Coke Particle
We thank Dr. Frank T. Jere of DTE Energy Systems for donating the coke. The University of Michigan through the A.H. White Collegiate Professorship funded this research.
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