May 2021

Preliminary investigation on the quality of amasiri sandstone (Southeastern Nigeria) as construction material

The need to source for local construction materials that are appropriate for the massive developmental projects in Ebonyi State, southeastern Nigeria, has necessitated sampling and testing of the Maastrichtian Amasiri Sandstone in the Akpoha area of the state. Petrographic analysis and aggregate tests were conducted on six samples randomly selected from the rock deposit underlying the area. The petrographic analysis...

Author(s): Chioma Elizabeth Nwimo, Modestus Chijioke Ohaegbulem, Okechukwu Pius Aghamelu, Nonyelum Stella Iloanya and Chijioke Martin Nwachukwu

May 2021

Determining the optimum compressive strength of cemented paste backfill for artificial ground support in underground mines

This study was carried out to determine the optimum strength of cemented paste backfill for production of an economic backfill in an underground mine. Tailings samples from a copper mine, Namibia were collected and classified into three particle size range of +75, +150 and +300 µm for preparation of cemented-tailings paste. Tailings compaction was also carried out for a penetrometer (CBR) test to determine the...

Author(s): Ebenezer O. Ajaka, Kasongo O. Ilunga and Adeyinka O. Omotehinse