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Optimisation of Geotechnical Properties of Spent Ore for Road Construction in Ghana BERNARD OFOSU; Micheal Affam; Farouk Omar Uman; Vincent Acquah Bondzie
Lowland Technology International Vol 22 No 4 (2021): Lowland Technology International Journal
Publisher : International Association of Lowland Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0001/ialt_lti.v22i4.741

Abstract

Mining operations generate large volume of wastes (spent ore) and due to its potential toxic nature, it is managed in accordance to very strict environmental regulations in Ghana. The spent ore can be reutilized as a construction material especially for road, however, due to its granular nature, it is not possible to compact the materials to achieve the required strength for engineering purposes. Laterite which is abundantly found in Ghana was used to improve the engineering properties of spent ore for road base and subbase construction. The laterite was added to the spent ore in range of 10% to 50% to form composites. Physical and engineering laboratory tests including moisture content, Atterberg Limits, compaction and Californian Bearing Ratio were conducted on the composites in accordance with British Standards. The results show that the Liquid Limit of the composites are between 18.7% and 30%, the Plasticity Index are between 1.3% and 11.3%. The soaked CBR values are between 32% and 62%, the unsoaked values are between 31% and 64%. The results show that, 30% addition of the laterite will improve the spent ore for only subbase construction based on Ghana Highway Authority standards for base and subbase materials in Ghana.
Optimisation of the Geotechnical Properties of Spent Ore for Road Construction in Ghana Michael Affam; Bernard Ofosu
Lowland Technology International Vol 24 No 1 (2022): Lowland Technology International Journal
Publisher : International Association of Lowland Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0001/ialt_lti.v24i1.1361

Abstract

Mining operations generate large volume of wastes and due to its potential toxic nature, it is managed in accordance to very strict environmental regulations in Ghana. The spent ore can be reutilized as a construction material especially for road, however, due to its granular nature, it is not possible to compact the materials to achieve the required strength for engineering purposes. Laterite which is abundantly found in Ghana was used to improve the engineering properties of spent ore for road base and subbase construction. The laterite was added to the spent ore in range of 10% to 50% to form composites. Physical and engineering laboratory tests including moisture content, Atterberg Limits, compaction and Californian Bearing Ratio were conducted on the composites in accordance with British Standards. The results show that the Liquid Limit of the composites are between 18.7% and 30%, the Plasticity Index are between 1.3% and 11.3%. The soaked CBR values are between 32% and 62%, the unsoaked values are between 31% and 64%. The results show that, 30% addition of the laterite will improve the spent ore for only subbase construction based on Ghana Highway Authority standards for base and subbase materials in Ghana.
Co-Authors Farouk Omar Uman Michael Affam Micheal Affam Vincent Acquah Bondzie