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EFFECT OF TREATED OIL SANDS DRILL CUTTINGS WASTE ON MICROPILES GROUT PROPERTIES
Session: Mining Geotechnique IV / Géotechnique minière IV
Moustafa Aboutabikh, Department of Civil and Environmental Engineering – University of Western, London, Ontario, Canada (Canada)
Ahmed Soliman, Department of Civil and Environmental Engineering – University of Western, London, Ontario, Canada (on Leave of Ain Shams University, Cairo, Egypt) (Canada)
Hesham El Naggar, Department of Civil and Environmental Engineering – University of Western, London, Ontario, Canada (Canada)
A micropile is constructed by drilling a hole, placing a steel reinforcing element, grouting it using neat cement. However, cement production consumes energy and generates carbon dioxide. To develop sustainable and environmentally benign micropile construction, a feasibility study was performed on using treated oil sands drill cuttings waste (TOSW) as a partially replacement of cement in micropiles. Results show that TOSW did not affect the flowability for grout mixtures. Increasing TOSW replacement level reduced the 28-day grout compressive strength slightly, while strength gain rate had increased at later ages. Moreover, the achieved strength was still higher than the required strength by different standards. Results suggest that TOSW can be used in micropiles leading to environmental and economic benefits.
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