Flammability, corrosion resistance and environment by V Mhlawakhe.pdf
Laboratory work turning high ash coal fines into moulded building composites, comparing coal tar pitch against a silicone binder, with strength, burning, corrosion and leaching tests. For product developers.
Air blowing converted coal tar into a pitch with 11.27% volatile matter and 87.68% fixed carbon, which bound high ash coal fines into structural composites. Compressive strengths ran from 106.58 to 344.71 MPa and flexural strengths from 48.75 to 159.30 MPa. Flammability was low across all composites and corrosion rates stayed below those of some commercial ceramic tiles.
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Review of earlier geophysical work plus literature, setting out method selection and test site requirements ahead of field trials, for engineers assessing undermined ground before development.
What this report foundMicrogravity, resistivity based methods including self potential, and time domain electromagnetics are identified as able to detect and delineate shallow old...
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Microgravity, resistivity based methods including self potential, and time domain electromagnetics are identified as able to detect and delineate shallow old workings, with controlled source audio magnetotellurics useful below about 30 metres. How well each performs depends on target depth, the material filling the void and the overburden, and has never been quantified. Field trials were planned to close that gap.
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Viability assessment and outline plan for regional air quality monitoring on the Highveld, including institutional arrangements and information gaps, for industry, regulators and community bodies.
What this report foundA regional monitoring programme was found to be viable and is proposed as a public private partnership covering air emissions, air quality and energy...
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A regional monitoring programme was found to be viable and is proposed as a public private partnership covering air emissions, air quality and energy efficiency on the Mpumalanga Highveld. The assessment concluded that the worst health impacts fall on residential areas, driven by inefficient coal burning for heating and by housing sited close to large industry.