December 2013

Application of Scheffe’s model in optimization of compressive strength of lateritic concrete

In this research work, the use of Scheffe’s simplex theory for the optimization of the compressive strength of lateritic concrete was investigated. The objective of the study is to develop a model that can predict the mix ratio when the desired compressive strength is known or vice-versa. A total of sixty (60) concrete cubes were cast. For each of the twenty mix ratios, three cubes were cast and the average...

Author(s): Elvis M. Mbadike and N. N. Osadebe

December 2013

Strength properties of groundnut shell ash (GSA) blended concrete

This research work detailed the report of an experimental study into the strength of modified concrete produced from mixes containing partial replacements of Ordinary Portland Cement (OPC) with groundnut shell ash (GSA). The experiments were designed to include two main mixes (with variations in the water/cement ratios) with different percentages by weight of OPC to GSA in the order of 100:0, 95:5, 90:10, 85:15 and...

Author(s): Raheem, S. B., Oladiran, G. F., Olutoge, F. A. and Odewumi, T. O.