Strength Characteristics of Concrete Beams with Cement Partially Replaced by Uncalcined Soldier-Ant Mound Clay
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Macmillan Uganda Publishers Limited
Various researchers in the recent past have investigated the pozzolanic properties of many waste materials like fly ash, electric arc furnace slag (a by-product of steel production), ground broken bottles, ashes produced from various agricultural waste such as palm oil waste, rice-husk ash, wheat straw ash, etc. No research findings have been reported on uncalcined soldier-ant mound clay (SAMC) as a pozzolana. It is therefore the aim and objective of this work to consider uncalcined soldier-ant mound clay as pozzolana. Eighty-four (84) beam specimens were cast, with seventy-two having cement replaced with soldier-ant mound clay varying from 5% to 30% at 5% interval. A concrete mix ratio of 1:2:4 (Cement/SAMC: sand: granite) with 0.65 water/cement ratio was adopted for this investigation. Results indicate that the addition of SAMC in the mix produced concrete of lower density than normal concrete; increases the initial and final setting time of cement with increased workability. The density as well as the flexural strength of concrete decreased with increase in SAMC content. However, 5% SAMe content in the mix is considered optimum for improved structural performance when compared with normal concrete.
Concrete Slabs , Density , Flexural Strength , Crack Pattern
Ikponmwosa, E, Salau, M and Mustapha,S (2011) Strength Characteristics of Concrete Beams with Cement Partially Replaced by Uncalcined Soldier-Ant Mound Clay. Proceedings of the Second lnternational Conference on Advances in Engineering and Technology, Faculty of Technology, Makerere University, Uganda